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  • 1.
    Ahlsson, Fredrik
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Diderholm, Barbro
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Ewald, Uwe
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Jonsson, Björn
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Forslund, Anders H
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Stridsberg, Mats
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Biochemical endocrinology.
    Gustafsson, Jan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Adipokines and their relation to maternal energy substrate production, insulin resistance and fetal size2013In: European Journal of Obstetrics, Gynecology, and Reproductive Biology, ISSN 0301-2115, E-ISSN 1872-7654, Vol. 168, no 1, p. 26-29Article in journal (Refereed)
    Abstract [en]

    OBJECTIVE:

    The role of adipokines in the regulation of energy substrate production in non-diabetic pregnant women has not been elucidated. We hypothesize that serum concentrations of adiponectin are related to fetal growth via maternal fat mass, insulin resistance and glucose production, and further, that serum levels of leptin are associated with lipolysis and that this also influences fetal growth. Hence, we investigated the relationship between adipokines, energy substrate production, insulin resistance, body composition and fetal weight in non-diabetic pregnant women in late gestation.

    STUDY DESIGN:

    Twenty pregnant women with normal glucose tolerance were investigated at 36 weeks of gestation at Uppsala University Hospital. Levels of adipokines were related to rates of glucose production and lipolysis, maternal body composition, insulin resistance, resting energy expenditure and estimated fetal weights. Rates of glucose production and lipolysis were estimated by stable isotope dilution technique.

    RESULTS:

    Median (range) rate of glucose production was 805 (653-1337)μmol/min and that of glycerol production, reflecting lipolysis, was 214 (110-576)μmol/min. HOMA insulin resistance averaged 1.5±0.75 and estimated fetal weights ranged between 2670 and 4175g (-0.2 to 2.7 SDS). Mean concentration of adiponectin was 7.2±2.5mg/L and median level of leptin was 47.1 (9.9-58.0)μg/L. Adiponectin concentrations (7.2±2.5mg/L) correlated inversely with maternal fat mass, insulin resistance, glucose production and fetal weight, r=-0.50, p<0.035, r=-0.77, p<0.001, r=-0.67, p<0.002, and r=-0.51, p<0.032, respectively. Leptin concentrations correlated with maternal fat mass and insulin resistance, r=0.76, p<0.001 and r=0.73, p<0.001, respectively. There was no correlation between maternal levels of leptin and rate of glucose production or fetal weight. Neither were any correlations found between levels of leptin or adiponectin and maternal lipolysis or resting energy expenditure.

    CONCLUSION:

    The inverse correlations between levels of maternal adiponectin and insulin resistance as well as endogenous glucose production rates indicate that low levels of adiponectin in obese pregnant women may represent one mechanism behind increased fetal size. Maternal levels of leptin are linked to maternal fat mass and its metabolic consequences, but the data indicate that leptin lacks a regulatory role with regard to maternal lipolysis in late pregnancy.

  • 2.
    Bratteby Tollerz, Linda U
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Olsson, Roger M
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism.
    Forslund, Anders H
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Norrlin, Simone E
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Reliability of energy cost calculations in children with cerebral palsy, cystic fibrosis and healthy controls2011In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 100, no 12, p. 1616-1620Article in journal (Refereed)
    Abstract [en]

    Aim: To study test-retest reliability of physiological cost index (PCI) and total cost index (TCI) in three groups of children. TCI modified PCI by excluding rest heart rate in calculation.

    Methods: Energy cost was evaluated from two consecutive walking tests, and results were compared between methods, tests and groups. Thirty-nine children, eight with cerebral palsy, 11 with cystic fibrosis and 20 healthy controls, aged 5-16 years participated in the study conducted at the Clinical Nutrition and Metabolism laboratory, University Hospital, Uppsala, Sweden. Heart rate was recorded during sitting and walking at self-selected speed. PCI and TCI were calculated using both non-steady-state and steady-state work heart rates. Test-retest reliability was analysed by mean of differences, pooled SD, coefficient of variation (CV%) and correlation coefficients.

    Results: Reliability was high for PCI and TCI. TCI showed consistently lower variation between tests than PCI for all groups. In the group with cerebral palsy, using non-steady-state showed highest reliability.

    Conclusion: Both PCI and TCI were reliable methods when calculating energy cost in children with cerebral palsy, cystic fibrosis and controls. TCI seemed to be a suitable alternative in the evaluation of gait efficiency in children.

  • 3.
    Cen, Jing
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Sargsyan, Ernest
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Molecular Neuroscience Group, Institute of Molecular Biology, National Academy of Sciences, Yerevan, Armenia.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Paediatric Inflammation Research.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Paediatric Inflammation Research.
    Mechanisms of beneficial effects of metformin on fatty acid-treated human islets2018In: Journal of Molecular Endocrinology, ISSN 0952-5041, E-ISSN 1479-6813, Vol. 61, no 3, p. 91-99Article in journal (Refereed)
    Abstract [en]

    Elevated levels of palmitate accentuate glucose-stimulated insulin secretion (GSIS) after short-term and cause beta-cell dysfunction after prolonged exposure. We investigated whether metformin, the first-line oral drug for treatment of T2DM, has beneficial effects on FFA-treated human islets and the potential mechanisms behind the effects. Insulin secretion, oxygen consumption rate (OCR), AMPK activation, endoplasmic reticulum (ER) stress and apoptosis were examined in isolated human islets after exposure to elevated levels of palmitate in the absence or presence of metformin. Palmitate exposure doubled GSIS after 2 days but halved after 7 days compared with control. Inclusion of metformin during palmitate exposure normalized insulin secretion both after 2 and 7 days. After 2-day exposure to palmitate, OCR and the marker of the adaptive arm of ER stress response (sorcin) were significantly raised, whereas AMPK phosphorylation, markers of pro-apoptotic arm of ER stress response (p-EIF2α and CHOP) and apoptosis (cleaved caspase 3) were not affected. Presence of metformin during 2-day palmitate exposure normalized OCR and sorcin levels. After 7-day exposure to palmitate, OCR and sorcin were not significantly different from control level, p-AMPK was reduced and p-EIF2α, CHOP and cleaved caspase 3 were strongly upregulated. Presence of metformin during 7-day culture with palmitate normalized the level of p-AMPK, p-EIF2α, CHOP and cleaved caspase 3 but significantly increased the level of sorcin. Our study demonstrates that metformin prevents early insulin hypersecretion and later decrease in insulin secretion from palmitate-treated human islets by utilizing different mechanisms.

  • 4.
    Ciba, Iris
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Eriksson, J.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Ardelt-Gattinger, E.
    Obes Acad Austria, Salzburg, Austria.;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.;Salzburg Univ, Dept Psychol, A-5020 Salzburg, Austria..
    Hofmann, J.
    Obes Acad Austria, Salzburg, Austria.;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.;Salzburg Univ, Dept Psychol, A-5020 Salzburg, Austria.;Paracelsus Med Univ, Dept Paediat, Salzburg, Austria..
    Weghuber, D.
    Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.;Paracelsus Med Univ, Dept Paediat, Salzburg, Austria..
    Dahlbom, Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Eating Behavior In Swedish And Austrian Children And Adolescents With Obesity2016In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 106, p. 30-31Article in journal (Refereed)
  • 5.
    Ciba, Iris
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Weghuber, D.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria.;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria..
    Manell, Hannes
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Staaf, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Dahlbom, Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Paulmichl, K.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria.;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria..
    Zsoldos, F.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria.;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria..
    Widhalm, K.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria.;Acad Inst Clin Nutr, Vienna, Austria..
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Development of Glucose Intolerance in Obese Children Studied in the Beta-Judo Cohort2015In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 104, no S466, p. 12-12Article in journal (Other academic)
  • 6.
    Dahlbom, Ingrid
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Lidström, M.
    Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Vilen, H.
    Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Andersson, K.
    Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Ciba, Iris
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Kritikos, D.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Daily Assessments of Perceived Sensations in Obese and Non-Obese Children/Adolescents Using a New Mobile Application2017In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 106, p. 14-14Article in journal (Other academic)
  • 7.
    Forslund, Anders
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Staaf, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Radiology, Oncology and Radiation Science, Radiology.
    Ciba, Iris
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Dahlbom, Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Uppsala Longitudinal Study of Childhood Obesity: Protocol Description2014In: Pediatrics, ISSN 0031-4005, E-ISSN 1098-4275, Vol. 133, no 2, p. E386-E393Article in journal (Refereed)
    Abstract [en]

    BACKGROUND AND OBJECTIVE: The prevalence of childhood obesity has risen considerably on a global scale during the past decades, and the condition is associated with increased risk of morbidity. The objective is to describe the Uppsala Longitudinal Study of Childhood Obesity (ULSCO) cohort, including some baseline data, and outline addressed research areas that aim at identifying factors implicated in and contributing to development of obesity and obesity-related diseases, including type 2 diabetes. METHODS: Severely obese and lean control subjects are examined at enrollment and at subsequent annual visits by using detailed questionnaires, anthropometric measurements, indirect calorimetry, and functional tests such as oral glucose tolerance tests. Some subjects undergo additional characterization with MRI, subcutaneous fat biopsies, frequent blood sampling, and hyperglycemic clamps. Biological samples are obtained and stored in a biobank. RESULTS: Active recruitment started in 2010, and standard operating procedures have been established. A high participation rate and annual follow-ups have resulted in a cohort exceeding 200 subjects, including 45 lean controls (as of October 2013). Initial research focus has been on traits of the metabolic syndrome, hyperinsulinemia and identifying risk factors for type 2 diabetes. CONCLUSIONS: The ULSCO cohort serves as an important resource in defining and understanding factors contributing to childhood obesity and development of obesity-related diseases. Given the comprehensive characterization of the cohort, factors contributing to disease development and progression can be identified. Such factors are further evaluated for their mechanistic role and significance, and noncommunicable metabolic diseases are especially addressed and considered.

  • 8.
    Forslund, Anders
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Weghuber, D.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.
    Paulmichl, K.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.
    Zsoldos, F.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.
    Widhalm, K.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.
    Vheu, M. D.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.
    Lagler, F.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.
    Cadamuro, J.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.
    Brunner, S.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.
    Hofmann, J.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.
    Dahlbom, Ingrid
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Lidström, M.
    Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Vilen, H.
    Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Ciba, Iris
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala Univ, Childrens Hosp, Uppsala, Sweden.
    Manell, Hannes
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Ahlström, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Kristinsson, Hjalti
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Alderborn, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Exenatide Once Weekly Reduces Weight, Liver Fat And 2-Hour Postprandial Glucose In Obese Adolescents2017In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 106, no 470, p. 14-15Article in journal (Other academic)
  • 9.
    Heu, Verena
    et al.
    PMU, Univ Klin Kinder & Jugendheilkunde, Salzburg, Austria..
    Aigner, Elmar
    PMU, Univ Klin Innere Med 1, Salzburg, Austria..
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Cadamuro, Janne
    PMU, Univ Inst Med Chem Lab Diagnost, Salzburg, Austria..
    Ciba, Iris
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Pediatric Endocrinology.
    Dahlbom, Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Pediatric Endocrinology.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Pediatric Endocrinology.
    Kedenko, Ludmilla
    PMU, Univ Klin Innere Med 1, Salzburg, Austria..
    Lang, Josef
    PMU, Univ Klin Innere Med 1, Salzburg, Austria..
    Manell, Hannes
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Katharina, Paulmichl
    PMU, Univ Klin Kinder & Jugendheilkunde, Salzburg, Austria..
    Bernhard, Paulweber
    PMU, Univ Klin Innere Med 1, Salzburg, Austria..
    Kirsten, Roomp
    Univ Luxemburg, LCSB, Luxembourg, Luxembourg..
    Kurt, Widhalm
    PMU, Univ Klin Kinder & Jugendheilkunde, Salzburg, Austria..
    Fanni, Zsoldos
    PMU, Univ Klin Kinder & Jugendheilkunde, Salzburg, Austria..
    Daniel, Weghuber
    PMU, Univ Klin Kinder & Jugendheilkunde, Salzburg, Austria..
    Effect of Glucose Load on the Incretin Response (GLP-1) in obese Adolescents compared to the normal-weight Adolescents2017In: Wiener Klinische Wochenschrift, ISSN 0043-5325, E-ISSN 1613-7671, Vol. 129, no 19-20, p. 736-736Article in journal (Other academic)
  • 10.
    Holmback, U
    et al.
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Sciences.
    Forslund, A
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Sciences.
    Lowden, A
    Forslund, J
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Sciences.
    Åkerstedt, T
    Lennernas, M
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Sciences.
    Hambraeus, L
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Sciences.
    Stridsberg, M
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Sciences.
    Endocrine responses to nocturnal eating - possible implications for nightwork.2003In: Eur J Nutr, Vol. 42, p. 75-Article in journal (Refereed)
  • 11.
    Holmbäck, Ulf
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism.
    Berglund, Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    No Association between Body Composition and Activity Level in Obese Children and Adolescents Due to Low Overall Activity Level2015In: The FASEB Journal, ISSN 0892-6638, E-ISSN 1530-6860, Vol. 29, no 1 SupplementArticle in journal (Other academic)
  • 12.
    Holmbäck, Ulf
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Forslund, Jeanette
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Hambraeus, Leif
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Lennernäs, Maria
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Lowden, Arne
    Stridsberg, Mats
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Åkerstedt, Torbjörn
    Metabolic responses to nocturnal eating in men are affected by sources of dietary energy2002In: Journal of Nutrition, ISSN 0022-3166, E-ISSN 1541-6100, Vol. 132, no 7, p. 1892-1899Article in journal (Refereed)
    Abstract [en]

    Because night work is becoming more prevalent, we studied whether feeding at different times of a 24-h period would elicit different metabolic responses and whether dietary macronutrient composition would affect these responses. Seven men (26-43 y, 19.9-26.6 kg/m(2)) consumed two isocaloric diets, in a crossover design. The diets were a high carbohydrate (HC) diet [65 energy % (E%) carbohydrates, 20E% fat] and a high fat (HF) diet (40E% carbohydrates, 45E% fat). After a 6-d diet-adjustment period, the men were kept awake for 24 h and the food (continuation of respective diet) was provided as six isocaloric meals (i.e., every 4 h). Energy and substrate turnover, heart rate, mean arterial pressure (MAP), blood glucose, triacylglycerol (TAG), nonesterified fatty acid (NEFA) and glycerol were measured throughout the 24-h period. Significantly higher energy expenditure and NEFA concentration, and lower blood glucose and TAG concentrations were observed when the men consumed the HF diet than when they consumed the HC diet. Significant circadian patterns were seen in body and skin temperature (nadir, 0400-0500 h). When the men consumed the HF diet, significant circadian patterns were seen in fat oxidation (nadir, 0800-1200 h; plateau, 1200-0800 h), heat release (nadir, 0800-1200 h; plateau, 1600-0800 h), heart rate (nadir, 0000 h), blood glucose (nadir, 0800-1200 h; peak, 0000-0400 h), NEFA (nadir, 0800-1200 h; peak, 1200-2000 h) and TAG (nadir, 0800-1200 h; peak, 0400-0800 h) concentrations. Energy expenditure, carbohydrate oxidation, MAP and glycerol concentration did not display circadian patterns. Unequal variances eradicated most circadian effects in the HC-diet data. The increased TAG concentration in response to feeding at 0400 h might be involved in the higher TAG concentrations seen in shift workers. Distinct macronutrient/circadian-dependent postprandial responses were seen in most studied variables.

  • 13.
    Holmbäck, Ulf
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Lowden, Arne
    Åkerfeldt, Torbjörn
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Lennernäs, Maria
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Hambraeus, Leif
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Forslund, Jeanette
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Åkerstedt, Torbjörn
    Stridsberg, Mats
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    The Human Body May Buffer Small Differences in Meal Size and Timing during a 24-h Wake Period Provided Energy Balance Is Maintained2003In: Journal of Nutrition, ISSN 0022-3166, E-ISSN 1541-6100, Vol. 133, no 9, p. 2748-55Article in journal (Refereed)
    Abstract [en]

    Because approximately 20% of the work force in the industrialized world have irregular working hours, it is pertinent to study the consequences of eating at irregular, especially nighttime hours. We studied the postprandial responses during nocturnal fasting vs. eating throughout a 24-h wake period. Seven healthy males were studied twice in a crossover design. After a 6-d diet adjustment period [high fat diet, 45 energy percent (en%) fat, 40 en% carbohydrates)] with sleep from 2300 to 0700 h, the men were kept awake for 24 h at the metabolic ward and given either 6 isoenergetic meals, i.e., every 4 h (N-eat) or 4 isoenergetic meals from 0800 to 2000 h followed by a nocturnal fast (N-fast), with the same 24-h energy intake. Energy expenditure, substrate utilization, activity, heat release, body temperature and blood variables were measured over 24 h. Energy expenditure and blood glucose, triacylglycerol, insulin and glucagon concentrations were lower and nonesterified fatty acids concentrations were higher during the nocturnal fast than during nocturnal eating (P < 0.05); however, no 24-h differences between the protocols were apparent. Nocturnal fasting slightly altered the secretory patterns of the thyroid hormones and cortisol (P < 0.05). We found no clear indication that it would be more favorable to ingest few larger daytime meals than smaller meals throughout the 24-h period. The body seems to be able to buffer small differences in meal size and timing provided energy balance is maintained.

  • 14.
    Klar, Joakim
    et al.
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Genetics and Pathology.
    Åsling, Bengt
    Carlsson, Birgit
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Genetics and Pathology.
    Ulvsbäck, Magnus
    Dellsén, Anita
    Ström, Carina
    Rhedin, Margaretha
    Forslund, Anders
    Annerén, Göran
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Genetics and Pathology.
    Ludvigsson, Jonas
    Dahl, Niklas
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Genetics and Pathology.
    RAR-related orphan receptor A isoform 1 (RORa1) is disrupted by a balanced translocation t(4;15)(q22.3;q21.3) associated with severe obesity.2005In: Eur J Hum Genet, ISSN 1018-4813Article in journal (Refereed)
    Abstract [en]

    We have identified a family comprising a mother and two children with idiopathic and profound obesity body mass index (BMI) 41-49 kg/m(2). The three family members carry a balanced reciprocal chromosome translocation t(4;15). We present here the clinical features of the affected individuals as well as the physical mapping and cloning of the chromosomal breakpoints. A detailed characterisation of the chromosomal breakpoints at chromosomes 4 and 15 revealed that the translocation is almost perfectly balanced with a very short insertion/deletion.

    The chromosome 15 breakpoint is positioned in intron 1 of the RAR-related orphan receptor A isoform 1 (RORa1) and the chromosome 4 breakpoint is positioned 133 kb telomeric to the transcriptional start of the unc-5 homolog B (UNC5C) and 154 kb centromeric of the transcriptional start of the pyruvate dehydrogenase (lipoamide) alpha 2 (PDHA2). The rearrangement creates a fusion gene, which includes the RORa1 exon 1 and UNC5C that is expressed in frame in adipocytes from the affected patients. We also show that this transcript is translated into a protein. From previous reports, it is shown that RORa1 is implicated in the regulation of adipogenesis and lipoprotein metabolism. We hypothesise that the obesity in this family is caused by (i) haploinsufficiency for RORa1 or, (ii) a gain of function mechanism mediated by the RORa1-UNC5C fusion gene.

  • 15.
    Kristinsson, Hjalti
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Manell, Hannes
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Dahlbom, Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Presto, J.
    Mercodia, Uppsala, Sweden.
    Garedal, C.
    Mercodia, Uppsala, Sweden.
    Ritzen, H.
    Mercodia, Uppsala, Sweden.
    Vilhelmsson, M.
    Mercodia, Uppsala, Sweden.
    Kilstedt, E.
    Mercodia, Uppsala, Sweden.
    Johnson, F.
    Mercodia, Uppsala, Sweden.
    Stenberg, H.
    Mercodia, Uppsala, Sweden.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Bergsten, P
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    The initial rise in GIP secretion during OGTT correlates with the initial suppression of glucagon secretion in adolescents with obesity and type 2 diabetes2018In: Diabetologia, ISSN 0012-186X, E-ISSN 1432-0428, Vol. 61, p. S247-S247Article in journal (Other academic)
  • 16.
    Langner, Taro
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Hedström, Anders
    BioVenture Hub, Antaros Med, Molndal, Sweden.
    Mörwald, Katharina
    Paracelsus Med Univ, Dept Pediat, Salzburg, Austria; Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.
    Weghuber, Daniel
    Paracelsus Med Univ, Dept Pediat, Salzburg, Austria; Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Paediatric Inflammation Research.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Paediatric Inflammation Research.
    Ahlström, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology. BioVenture Hub, Antaros Med, Mölndal, Sweden.
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology. BioVenture Hub, Antaros Med, Mölndal, Sweden.
    Fully convolutional networks for automated segmentation of abdominal adipose tissue depots in multicenter water–fat MRI2019In: Magnetic Resonance in Medicine, ISSN 0740-3194, E-ISSN 1522-2594, Vol. 81, no 4, p. 2736-2745Article in journal (Refereed)
    Abstract [en]

    Purpose: An approach for the automated segmentation of visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) in multicenter water–fat MRI scans of the abdomen was investigated, using 2 different neural network architectures.

    Methods: The 2 fully convolutional network architectures U‐Net and V‐Net were trained, evaluated, and compared using the water–fat MRI data. Data of the study Tellus with 90 scans from a single center was used for a 10‐fold cross‐validation in which the most successful configuration for both networks was determined. These configurations were then tested on 20 scans of the multicenter study beta‐cell function in JUvenile Diabetes and Obesity (BetaJudo), which involved a different study population and scanning device.

    Results: The U‐Net outperformed the used implementation of the V‐Net in both cross‐validation and testing. In cross‐validation, the U‐Net reached average dice scores of 0.988 (VAT) and 0.992 (SAT). The average of the absolute quantification errors amount to 0.67% (VAT) and 0.39% (SAT). On the multicenter test data, the U‐Net performs only slightly worse, with average dice scores of 0.970 (VAT) and 0.987 (SAT) and quantification errors of 2.80% (VAT) and 1.65% (SAT).

    Conclusion: The segmentations generated by the U‐Net allow for reliable quantification and could therefore be viable for high‐quality automated measurements of VAT and SAT in large‐scale studies with minimal need for human intervention. The high performance on the multicenter test data furthermore shows the robustness of this approach for data of different patient demographics and imaging centers, as long as a consistent imaging protocol is used.

  • 17.
    Lindblad, Frank
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Child and Adolescent Psychiatry.
    Eickhoff, Malin
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Child and Adolescent Psychiatry.
    Forslund, Anders H
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Isaksson, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Child and Adolescent Psychiatry.
    Gustafsson, Jan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Fasting blood glucose and HbA1c in children with ADHD2015In: Psychiatry Research, ISSN 0165-1781, E-ISSN 1872-7123, Vol. 226, no 2-3, p. 515-516Article in journal (Refereed)
    Abstract [en]

    Reports of hypocortisolism and overweight in pediatric ADHD motivate an investigation of blood glucose regulation in this group. Fasting blood glucose and HbA1c were investigated in 10 children (10-15 years) with ADHD and 22 comparisons. Fasting blood glucose was similar in both groups. HbA1c values were higher in the ADHD-group. BMI-SDS was also higher in the ADHD-group but did not predict HbA1c. The results suggest an association between ADHD and an altered blood glucose homeostasis.

  • 18. Lowden, Arne
    et al.
    Holmbäck, Ulf
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Sciences.
    Akerstedt, Torbjörn
    Forslund, Jeanette
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Sciences.
    Lennernäs, Maria
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Sciences.
    Forslund, Anders
    Department of Women's and Children's Health. Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Sciences.
    Performance and sleepiness during a 24 h wake in constant conditions are affected by diet.2004In: Biol Psychol, ISSN 0301-0511, Vol. 65, no 3, p. 251-63Article in journal (Other scientific)
  • 19.
    Lundström, Elin
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Strand, Robin
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Visual Information and Interaction. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computerized Image Analysis and Human-Computer Interaction.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Weghuber, Daniel
    Ahlström, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology. Antaros Medical, BioVenture Hub, Mölndal.
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology. Antaros Medical, BioVenture Hub, Mölndal.
    Automated segmentation of human cervical-supraclavicular adipose tissue in magnetic resonance images2017In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 7, article id 3064Article in journal (Refereed)
    Abstract [en]

    Human brown adipose tissue (BAT), with a major site in the cervical-supraclavicular depot, is a promising anti-obesity target. This work presents an automated method for segmenting cervical-supraclavicular adipose tissue for enabling time-efficient and objective measurements in large cohort research studies of BAT. Fat fraction (FF) and R2* maps were reconstructed from water-fat magnetic resonance imaging (MRI) of 25 subjects. A multi-atlas approach, based on atlases from nine subjects, was chosen as automated segmentation strategy. A semi-automated reference method was used to validate the automated method in the remaining subjects. Automated segmentations were obtained from a pipeline of preprocessing, affine registration, elastic registration and postprocessing. The automated method was validated with respect to segmentation overlap (Dice similarity coefficient, Dice) and estimations of FF, R2* and segmented volume. Bias in measurement results was also evaluated. Segmentation overlaps of Dice = 0.93 +/- 0.03 (mean +/- standard deviation) and correlation coefficients of r > 0.99 (P < 0.0001) in FF, R2* and volume estimates, between the methods, were observed. Dice and BMI were positively correlated (r = 0.54, P = 0.03) but no other significant bias was obtained (P >= 0.07). The automated method compared well with the reference method and can therefore be suitable for time-efficient and objective measurements in large cohort research studies of BAT.

  • 20.
    Manell, Hannes
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Kristinsson, Hjalti
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Paulmichl, K.
    Paracelsus Med Univ, Pediat, Salzburg, Austria.;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria..
    Cadamuro, J.
    Paracelsus Med Univ, Lab Med, Salzburg, Austria..
    Zsoldos, F.
    Paracelsus Med Univ, Pediat, Salzburg, Austria.;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria..
    Staaf, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Sargsyan, Ernest
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Ahlström, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Weghuber, D.
    Paracelsus Med Univ, Pediat, Salzburg, Austria.;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria..
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Hyperglucagonaemia is associated with elevated plasma triglycerides and increased visceral fat in children and adolescents2016In: Diabetologia, ISSN 0012-186X, E-ISSN 1432-0428, Vol. 59, p. S267-S268Article in journal (Refereed)
  • 21.
    Manell, Hannes
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Kristinsson, Hjalti
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Paulmichl, Katharina
    Paracelsus Med Privatuniv, Abt Kinder & Jugendheilkunde, Salzburg, Austria.;Paracelsus Med Privatuniv, Obes Res Unit, Salzburg, Austria..
    Staaf, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Cadamuro, Janne
    Paracelsus Med Privatuniv, Abt Med Chem Labordiagnost, Salzburg, Austria..
    Zsoldos, Fanni
    Paracelsus Med Privatuniv, Abt Kinder & Jugendheilkunde, Salzburg, Austria.;Paracelsus Med Privatuniv, Obes Res Unit, Salzburg, Austria..
    Gopel, Sven
    AstraZeneca R&D, Molndal, Sweden..
    Sargsyan, Ernest
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Ahlström, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Weghuber, Daniel
    Paracelsus Med Privatuniv, Abt Kinder & Jugendheilkunde, Salzburg, Austria.;Paracelsus Med Privatuniv, Obes Res Unit, Salzburg, Austria..
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Hyperglucagonemia is associated with a Increase of Plasma Triglycerides as well as visceral Fat Tissue in a pediatric Cohort2016In: Wiener Klinische Wochenschrift, ISSN 0043-5325, E-ISSN 1613-7671, Vol. 128, no 19-20, p. 747-747Article in journal (Other academic)
  • 22.
    Manell, Hannes
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Kristinsson, Hjalti
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Ubhayasekera, Kumari
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Analytical Chemistry. Uppsala University, Science for Life Laboratory, SciLifeLab.
    Mörwald, Katharina
    Paracelsus Medical University.
    Staaf, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Cadamuro, Janne
    Paracelsus Medical University.
    Zsoldos, Fanni
    Paracelsus Medical University.
    Göpel, Sven
    AstraZeneca.
    Sargsyan, Ernest
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Ahlström, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Bergquist, Jonas
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Analytical Chemistry. Uppsala University, Science for Life Laboratory, SciLifeLab.
    Weghuber, Daniel
    Paracelsus Medical University.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Paediatric Inflammation Research.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Science for Life Laboratory, SciLifeLab. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Paediatric Inflammation Research.
    Hyperglucagonemia in youth is associated with high plasma free fatty acids, visceral adiposity and impaired glucose toleranceIn: Article in journal (Refereed)
    Abstract [en]

    Objective: To delineate mechanisms for fasting hyperglucagonemia in childhood obesity bystudying the associations between fasting plasma glucagon concentrations and plasmalipid parameters and fat compartments.

    Methods: Cross-sectional study of children and adolescents with obesity (n=147) and leancontrols (n=43). Differences in free fatty acids (FFA), triglycerides, insulin and fatcompartments (quantified by magnetic resonance imaging) across quartiles of fastingplasma glucagon concentration were analysed. Differences in OGTT glucagonresponse was tested in high vs low FFAs, triglycerides and insulin. Human islets ofLangerhans were cultured at 5.5 mmol/l glucose and in the absence or presence of aFFA mixture with total FFA concentration of 0.5 mmol/l and glucagon secretionquantified.

    Results: In children with obesity, the quartile with the highest fasting glucagon had higherinsulin (201±174 vs 83±39 pmol/l, p<0.01), FFAs (383±52 vs 338±109 μmol/l,p=0.02), triglycerides (1.5±0.9 vs 1.0±0.7 mmol/l, p<0.01), visceral adipose tissuevolume (1.9±0.8 vs 1.2±0.3 dm3, p<0.001) and a higher prevalence of impairedglucose tolerance (41% vs 8%, p=0.01) than the lowest quartile. During OGTT,children with obesity and high insulin had a worse suppression of glucagon during thefirst 10 minutes after glucose intake. Glucagon secretion was 2.6-fold higher in isletstreated with FFAs than in those not treated with FFAs.4

    Conclusion: Hyperglucagonemia in childhood obesity is associated with hyperinsulinemia, highplasma FFAs, high plasma triglycerides, visceral adiposity and impaired glucosetolerance. The glucagonotropic effect of FFAs on isolated human islets provides apotential mechanism linking high fasting plasma FFAs and glucagon levels.

  • 23.
    Manell, Hannes
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Shen, Qiujin
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Molecular tools.
    Kamali-Moghaddam, Masood
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Molecular tools.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Pediatric Endocrinology.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Pediatric Endocrinology.
    TNFSF14: a potential contributor to hyperinsulinaemia in childhood obesity2017In: Diabetologia, ISSN 0012-186X, E-ISSN 1432-0428, Vol. 60, p. S168-S168Article in journal (Other academic)
  • 24.
    Manell, Hannes
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Shen, Qiujin
    Uppsala University, Science for Life Laboratory, SciLifeLab. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Molecular tools.
    Roomp, Kirsten
    University of Luxembourg.
    Ciba, Iris
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Dahlbom, Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Weghuber, Daniel
    Paracelsus Medical University.
    Kamali-Moghaddam, Masood
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Molecular tools. Uppsala University, Science for Life Laboratory, SciLifeLab. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Science for Life Laboratory, SciLifeLab. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Paediatric Inflammation Research.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Paediatric Inflammation Research.
    Screening of inflammatory markers finds hepatocyte growth factor to be associated with weight gain in children and adolescents with obesityManuscript (preprint) (Other academic)
  • 25.
    Manell, Hannes
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Staaf, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Manukyan, Levon
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Kristinsson, Hjalti
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Cen, Jing
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Stenlid, Rasmus
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Ciba, Iris
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Altered Plasma Levels of Glucagon, GLP-1 and Glicentin During OGTT in Adolescents With Obesity and Type 2 Diabetes2016In: Journal of Clinical Endocrinology and Metabolism, ISSN 0021-972X, E-ISSN 1945-7197, Vol. 101, no 3, p. 1181-1189Article in journal (Refereed)
    Abstract [en]

    CONTEXT: Proglucagon-derived hormones are important for glucose metabolism, but little is known about them in pediatric obesity and type 2 diabetes mellitus (T2DM).

    OBJECTIVE: Fasting and postprandial levels of proglucagon-derived peptides glucagon, GLP-1, and glicentin in adolescents with obesity across the glucose tolerance spectrum were investigated.

    DESIGN: This was a cross-sectional study with plasma hormone levels quantified at fasting and during an oral glucose tolerance test (OGTT).

    SETTING: This study took place in a pediatric obesity clinic at Uppsala University Hospital, Sweden.

    PATIENTS AND PARTICIPANTS: Adolescents with obesity, age 10-18 years, with normal glucose tolerance (NGT, n = 23), impaired glucose tolerance (IGT, n = 19), or T2DM (n = 4) and age-matched lean adolescents (n = 19) were included.

    MAIN OUTCOME MEASURES: Outcome measures were fasting and OGTT plasma levels of insulin, glucagon, active GLP-1, and glicentin.

    RESULTS: Adolescents with obesity and IGT had lower fasting GLP-1 and glicentin levels than those with NGT (0.25 vs 0.53 pM, P < .05; 18.2 vs 23.6 pM, P < .01) and adolescents with obesity and T2DM had higher fasting glucagon levels (18.1 vs 10.1 pM, P < .01) than those with NGT. During OGTT, glicentin/glucagon ratios were lower in adolescents with obesity and NGT than in lean adolescents (P < .01) and even lower in IGT (P < .05) and T2DM (P < .001).

    CONCLUSIONS: Obese adolescents with IGT have lowered fasting GLP-1 and glicentin levels. In T2DM, fasting glucagon levels are elevated, whereas GLP-1 and glicentin levels are maintained low. During OGTT, adolescents with obesity have more products of pancreatically than intestinally cleaved proglucagon (ie, more glucagon and less GLP-1) in the plasma. This shift becomes more pronounced when glucose tolerance deteriorates.

  • 26.
    Nilsson, Björn Mikael
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Psychiatry, University Hospital.
    Olsson, Roger M.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism.
    Öman, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Wiesel, Frits-Axel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Psychiatry, University Hospital.
    Ekselius, Lisa
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Psychiatry, University Hospital.
    Forslund, Anders H.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Physical capacity, respiratory quotient and energy expenditure during exercise in male patients with schizophrenia compared with healthy controls2012In: European psychiatry, ISSN 0924-9338, E-ISSN 1778-3585, Vol. 27, no 3, p. 206-212Article in journal (Refereed)
    Abstract [en]

    BACKGROUND

    Despite massive research on weight gain and metabolic complications in schizophrenia there are few studies on energy expenditure and no current data on physical capacity. AIM: To determine oxygen uptake capacity, respiratory quotient (RQ) and energy expenditure during a submaximal exercise test in patients with schizophrenia and healthy controls.

    METHOD

    Ten male patients and 10 controls were included. RQ and energy expenditure were investigated with indirect calorimetry during a cycle ergometer test. The submaximal work level was defined by heart rate and perceived exhaustion. Physical capacity was determined from predicted maximal oxygen uptake capacity (VO(2-max)).

    RESULTS

    The patients exhibited significantly higher RQ on submaximal workloads and lower physical capacity. A significant lower calculated VO(2-max) remained after correction for body weight and fat free mass (FFM). Energy expenditure did not differ on fixed workloads.

    CONCLUSION

    RQ was rapidly increasing in the patients during exercise indicating a faster transition to carbohydrate oxidation and anaerobic metabolism that also implies a performance closer to maximal oxygen uptake even at submaximal loads. This may restrict the capacity for everyday activity and exercise and thus contribute to the risk for weight gain. Physical capacity was consequently significantly lower in the patients.

  • 27.
    Norgren, A.
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Ciba, Iris
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Manell, Hannes
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Stenlid, R.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Dahlbom, Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Early Adiposity Rebound and its Association with Obesity and Neuropsychiatric Disorders2015In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 104, no S466, p. 16-16Article in journal (Other academic)
  • 28.
    Ohlsson, H.
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Staaf, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Manukyan, Levon
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Cen, J.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Active GLP-1 but not insulin, glicentin or glucagon predicts the 2-hour OGTT glucose value in obese children2015In: Diabetologia, ISSN 0012-186X, E-ISSN 1432-0428, Vol. 58, no Suppl. 1, p. S276-S276Article in journal (Other academic)
  • 29.
    Paulmichl, K.
    et al.
    PMU, Univ Hosp Salzburg, Dept Pediat, Salzburg, Austria;PMU, Univ Hosp Salzburg, Obes Res Unit, Salzburg, Austria.
    Ahlström, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Brunner, S.
    PMU, Univ Hosp Salzburg, Dept Pediat, Salzburg, Austria;PMU, Univ Hosp Salzburg, Obes Res Unit, Salzburg, Austria;PMU, Univ Hosp Salzburg, Ctr Expertise THERAPEP, Salzburg, Austria.
    Cadamuro, J.
    PMU, Univ Hosp Salzburg, Dept Med Chem Lab Diagnost, Salzburg, Austria.
    Dahlbom, Ingrid
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Manell, Hannes
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Nasemann, J.
    Roomp, K.
    Univ Luxembourg, Luxembourg Ctr Syst Biomed, Luxembourg, Luxembourg.
    Widhalm, K.
    Zsoldos, F.
    PMU, Univ Hosp Salzburg, Dept Pediat, Salzburg, Austria;PMU, Univ Hosp Salzburg, Obes Res Unit, Salzburg, Austria.
    Weghuber, D.
    PMU, Univ Hosp Salzburg, Dept Pediat, Salzburg, Austria;PMU, Univ Hosp Salzburg, Obes Res Unit, Salzburg, Austria.
    Association Between Non-Alcoholic Fatty Liver Disease (NAFLD) and Iron Metabolism in Obese Children and Adolescents: Results of the Beta-JUDO Study2017In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 106, no S470, p. 13-13Article in journal (Other academic)
  • 30.
    Paulmichl, K.
    et al.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria..
    Binder, S.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria..
    Eidherr, A.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria..
    Zsoldos, F.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria..
    Widhalm, K.
    Med Univ Vienna, Dept Paediat, Vienna, Austria..
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Ciba, Iris
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Dahlbom, Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Ohlsson, H.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Staaf, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Weghuber, D.
    Paracelsus Med Univ, Dept Paediat, Salzburg, Austria..
    Deep Subcutaneous Adipose Tissue Correlates with Accentuated Insulin Secretion and Poor Insulin Sensitivity in Obese Children and Adolescents2015In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 104, no S466, p. 2-3Article in journal (Other academic)
  • 31.
    Ring-Dimitriou, Susanne
    et al.
    Paris Lodron Univ, Dept Sport Sci & Kinesiol, A-5020 Salzburg, Austria;ECOG, B-1000 Brussels, Belgium.
    Krustrup, Peter
    Univ Southern Denmark, Dept Sports Sci & Clin Biomech, SDU Sport & Hlth Sci Cluster SHSC, DK-5000 Odense, Denmark.
    Coelho-E-Silva, Manuel J.
    Univ Coimbra, Fac Sport Sci & Phys Educ, P-3000 Coimbra, Portugal.
    Mota, Jorge
    Univ Porto, Fac Sport, Res Ctr Phys Act Hlth & Leisure CIAFEL, P-4000 Porto, Portugal.
    Seabra, Andera
    Univ Porto, Fac Sport, Res Ctr Phys Act Hlth & Leisure CIAFEL, P-4000 Porto, Portugal.
    Rego, Carla
    Univ Porto, Fac Med, Ctr Res Hlth Technol & Informat Syst CINTESIS, P-4000 Porto, Portugal.
    Mazur, Artur
    ECOG, B-1000 Brussels, Belgium;Univ Rzeszow, Dept Pediat, Clin Prov Hosp 2 Rzeszow, Fac Med, PL-35301 Rzeszow, Poland.
    Vlachopapadopoulou, Elpis
    ECOG, B-1000 Brussels, Belgium;Childrens Hosp P&A Kyriakou, Dept Endocrinol, Athens 10431, Greece.
    Caroli, Margerita
    ECOG, B-1000 Brussels, Belgium.
    Frelut, Marie-Laure
    ECOG, B-1000 Brussels, Belgium;Brindisi Hosp, Dept Paediat, I-72100 Brindisi, Italy.
    Erhardt, Eva
    ECOG, B-1000 Brussels, Belgium;Univ Pecs, Dept Paediat, H-7600 Pecs, Hungary.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. ECOG, B-1000 Brussels, Belgium.
    Boyland, Ema
    ECOG, B-1000 Brussels, Belgium;Univ Liverpool, Appetite & Obes Res Grp, Dept Psychol Sci, Liverpool L69 7ZA, Merseyside, England.
    Weghuber, Daniel
    ECOG, B-1000 Brussels, Belgium;Paracelsus Med Univ, Dept Pediat, Obes Res Unit, A-5020 Salzburg, Austria.
    Thivel, David
    ECOG, B-1000 Brussels, Belgium;Clermont Auvergne Univ, Lab Metab Adaptat Exercise Physiol & Pathol Condi, Auvergne Reg Ctr Human Nutr, F-63000 Clermont Ferrand, France.
    Could sport be part of pediatric obesity prevention and treatment?: Expert conclusions from the 28th European Childhood Obesity Group Congress2019In: Journal of Sport and Health Science, ISSN 2095-2546, E-ISSN 2213-2961, Vol. 8, no 4, p. 350-352Article in journal (Other academic)
  • 32.
    Staaf, Johan
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Labmayr, V.
    Paracelsus Med Univ, Div Paediat Gastroenterol Hepatol & Nutr, Dept Paediat, Salzburg, Austria..
    Paulmichl, K.
    Paracelsus Med Univ, Div Paediat Gastroenterol Hepatol & Nutr, Dept Paediat, Salzburg, Austria.;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria..
    Ohlsson, H.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Cen, Jing
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Ciba, Iris
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Dahlbom, Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Roomp, K.
    Univ Luxembourg, Luxembourg Ctr Syst Biomed, Luxembourg, Luxembourg..
    Anderwald, C-H
    Paracelsus Med Univ, Div Paediat Gastroenterol Hepatol & Nutr, Dept Paediat, Salzburg, Austria.;Med Univ Vienna, Dept Internal Med, Div Endocrinol & Metab, Vienna, Austria..
    Ladinger, A.
    Paracelsus Med Univ, Dept Radiol, Salzburg, Austria..
    Schneider, R.
    Univ Luxembourg, Luxembourg Ctr Syst Biomed, Luxembourg, Luxembourg..
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Widhalm, K.
    Paracelsus Med Univ, Div Paediat Gastroenterol Hepatol & Nutr, Dept Paediat, Salzburg, Austria.;Acad Inst Clin Nutr, Vienna, Austria..
    Bergquist, Jonas
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Analytical Chemistry. Uppsala University, Science for Life Laboratory, SciLifeLab.
    Ahlström, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Weghuber, D.
    Paracelsus Med Univ, Div Paediat Gastroenterol Hepatol & Nutr, Dept Paediat, Salzburg, Austria.;Paracelsus Med Univ, Obes Res Unit, Salzburg, Austria..
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Pancreatic Fat is Associated with Metabolic Syndrome and Visceral Adipose Tissue but not Beta-Cell Function or Body Mass Index in Paediatric Obesity2015In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 104, no S466, p. 2-2Article in journal (Other academic)
  • 33.
    Staaf, Johan
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Labmayr, Viktor
    Paulmichl, Katharina
    Manell, Hannes
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Cen, Jing
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Ciba, Iris
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Dahlbom, Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Roomp, Kirsten
    Anderwald, Christian-Heinz
    Meissnitzer, Matthias
    Schneider, Reinhard
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Widhalm, Kurt
    Bergquist, Jonas
    Uppsala University, Science for Life Laboratory, SciLifeLab. Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Analytical Chemistry.
    Ahlström, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Weghuber, Daniel
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology.
    Pancreatic Fat Is Associated With Metabolic Syndrome and Visceral Fat but Not Beta-Cell Function or Body Mass Index in Pediatric Obesity2017In: Pancreas, ISSN 0885-3177, E-ISSN 1536-4828, Vol. 46, no 3, p. 358-365Article in journal (Refereed)
    Abstract [en]

    OBJECTIVE: Adolescents with obesity have increased risk of type 2 diabetes and metabolic syndrome (MetS). Pancreatic fat has been related to these conditions; however, little is known about associations in pediatric obesity. The present study was designed to explore these associations further.

    METHODS: We examined 116 subjects, 90 with obesity. Anthropometry, MetS, blood samples, and oral glucose tolerance tests were assessed using standard techniques. Pancreatic fat fraction (PFF) and other fat depots were quantified using magnetic resonance imaging.

    RESULTS: The PFF was elevated in subjects with obesity. No association between PFF and body mass index-standard deviation score (BMI-SDS) was found in the obesity subcohort. Pancreatic fat fraction correlated to Insulin Secretion Sensitivity Index-2 and Homeostatic Model Assessment of Insulin Resistance in simple regression; however, when using adjusted regression and correcting for BMI-SDS and other fat compartments, PFF correlated only to visceral adipose tissue and fasting glucose. Highest levels of PFF were found in subjects with obesity and MetS.

    CONCLUSIONS: In adolescents with obesity, PFF is elevated and associatedto MetS, fasting glucose, and visceral adipose tissue but not to beta-cellfunction, glucose tolerance, or BMI-SDS. This study demonstrates thatconclusions regarding PFF and its associations depend on the body massfeatures of the cohort.

  • 34.
    Stenlid, Maria Halldin
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Ahlsson, Fredrik
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Forslund, Anders H
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Döblen, U v
    Nordström, A
    Brown, RM
    Eklund, C
    Gustafsson, Jan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Glucose Production, Lipolysis and Energy Expenditure in an Infantwith Deficiency of the Pyruvate Dehydrogenase Complex2014In: Journal of Pediatric Endocrinology & Metabolism (JPEM), ISSN 0334-018X, E-ISSN 2191-0251Article in journal (Refereed)
  • 35.
    Stenlid, Maria Halldin
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Ahlsson, Fredrik
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Forslund, Anders H
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    von Döbeln, Ulrika
    Centre for Inherited Metabolic Disease, Karolinska University Hospital, Solna, Stockholm, Sweden.
    Gustafsson, Jan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Energy substrate metabolism in pyruvate dehydrogenase complex deficiency2014In: Journal of Pediatric Endocrinology & Metabolism (JPEM), ISSN 0334-018X, E-ISSN 2191-0251, Vol. 27, no 11-12, p. 1059-1064Article in journal (Refereed)
    Abstract [en]

    Pyruvate dehydrogenase (PDH) deficiency is an inherited disorder of carbohydrate metabolism, resulting in lactic acidosis and neurological dysfunction. In order to provide energy for the brain, a ketogenic diet has been tried. Both the disorder and the ketogenic therapy may influence energy production. The aim of the study was to assess hepatic glucose production, lipolysis and resting energy expenditure (REE) in an infant, given a ketogenic diet due to neonatal onset of the disease. Lipolysis and glucose production were determined for two consecutive time periods by constant-rate infusions of [1,1,2,3,3-2H5]-glycerol and [6,6-2H2]-glucose. The boy had been fasting for 2.5 h at the start of the sampling periods. REE was estimated by indirect calorimetry. Rates of glucose production and lipolysis were increased compared with those of term neonates. REE corresponded to 60% of normal values. Respiratory quotient (RQ) was increased, indicating a predominance of glucose oxidation. Blood lactate was within the normal range. Several mechanisms may underlie the increased rates of glucose production and lipolysis. A ketogenic diet will result in a low insulin secretion and reduced peripheral and hepatic insulin sensitivity, leading to increased production of glucose and decreased peripheral glucose uptake. Surprisingly, RQ was high, indicating active glucose oxidation, which may reflect a residual enzyme activity, sufficient during rest. Considering this, a strict ketogenic diet might not be the optimal choice for patients with PDH deficiency. We propose an individualised diet for this group of patients aiming at the highest glucose intake that each patient will tolerate without elevated lactate levels.

  • 36.
    Stenlid, R.
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Manell, Hannes
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Dipeptidyl Peptidase-4 is Associated with Elevated Liver Enzymes, Impaired Glucose Tolerance and Lowered Glucagon-Like Peptide-1 in Obese Children2015In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 104, no S466, p. 15-15Article in journal (Other academic)
  • 37.
    Stenlid, Rasmus
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Manell, Hannes
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Halldin, Maria
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Paediatric Inflammation Research.
    Kullberg, Joel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology. Antaros Med, SE-43183 Molndal, Sweden.
    Ahlström, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology. Antaros Med, SE-43183 Molndal, Sweden.
    Manukyan, Levon
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Weghuber, D
    Paulmichl, K
    Zsoldos, F
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    High DPP-4 concentrations in adolescents are associated with low intact GLP-12018In: Journal of Clinical Endocrinology and Metabolism, ISSN 0021-972X, E-ISSN 1945-7197, Vol. 103, no 8, p. 2958-2966Article in journal (Refereed)
    Abstract [en]

    Context: Dipeptidyl Peptidase-4 (DPP-4) metabolizes glucagon-like peptide-1 (GLP-1) and increased DPP4 levels are associated with obesity and visceral adiposity in adults.

    Objective: Investigating DPP-4 levels in adolescents and association with, firstly, circulating intact GLP-1 levels and glucose tolerance, secondly, BMI, and, thirdly visceral, subcutaneous and liver fat compartments.

    Design: Cross-sectional study, July 2012 to April 2015.

    Setting: Pediatric obesity clinic, Uppsala University Hospital.

    Patients and participants: Children and adolescents with obesity (n=59) and lean controls (n=21), age 8-18.

    Main outcome measures: BMI SDS, fasting plasma concentrations of DPP-4, total and intact GLP-1, fasting and OGTT concentrations of glucose and visceral (VAT) and subcutaneous (SAT) adipose tissue volumes and liver fat fraction.

    Results: Plasma DPP-4 decreased with age both in obese (41 ng/ml per year) and lean subjects (48 ng/ml per year). Plasma DPP-4 was higher in males both in the obesity and lean group. When adjusting for age and sex, plasma DPP-4 was negatively associated with intact GLP-1 at fasting, B=-12.3, 95% CI [-22.9, -1.8] and during OGTT, B=-12.1, 95% CI [-22.5, -1.7]. No associations were found between DPP-4 and plasma glucose measured at fasting or after a 2-hour OGTT. Plasma DPP-4 was 19% higher in the obese subjects. Among adipose tissue compartments the strongest association was with VAT, B=0.05, 95% CI [-0.02, 0.12].

    Conclusions: In adolescents, high plasma DPP-4 concentrations are associated with low proportion of intact GLP-1, high BMI, young age and male sex. The observed associations are compatible with an increased metabolism of GLP-1 in childhood obesity.

  • 38.
    Tollerz, Linda. U. Bratteby
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism.
    Forslund, Anders H.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Olsson, Roger. M.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism.
    Lidström, Helene
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Research in Disability and Habilitation. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics. Linkoping Univ, Dept Social & Welf Studies, Norrkoping, Sweden..
    Holmbäck, Ulf
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism.
    Children with cerebral palsy do not achieve healthy physical activity levels2015In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 104, no 11, p. 1125-1129Article in journal (Refereed)
    Abstract [en]

    AimThis study compared daily activity energy expenditure (AEE) in children with cerebral palsy with a control group and investigated whether the children achieved healthy levels of physical activity. MethodsWe enrolled eight children with bilateral cerebral palsy, from eight to 10years of age, and a group of controls matched for age and gender. For three days, physical activity was simultaneously measured by accelerometers and self-reports using a diary. The daily AEE results were compared between groups and methods. The number of children that achieved healthy physical activity levels in each group was explored. ResultsChildren with cerebral palsy had significantly lower daily AEE, as measured by accelerometers, than the controls, and they did not achieve the healthy moderate to heavy physical activity level defined in the Nordic Nutrition Recommendations. Self-reports using the diaries resulted in an overestimation of physical activity compared with the ankle accelerometer measurements in both groups. ConclusionOur investigation of physical activity in children with cerebral palsy and controls using accelerometers and a diary found low levels of daily AEE and physical activity, and these results were most prominent in the group with cerebral palsy. The diaries overestimated physical activity in both groups.

  • 39.
    Ubhayasekera, Sarojini J.K.A.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Analytical Chemistry. Uppsala University, Science for Life Laboratory, SciLifeLab.
    Staaf, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Bergsten, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Bergquist, Jonas
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Analytical Chemistry. Uppsala University, Science for Life Laboratory, SciLifeLab.
    Free fatty acid determination in plasma by GC-MS after conversion to Weinreb amides2013In: Analytical and Bioanalytical Chemistry, ISSN 1618-2642, E-ISSN 1618-2650, Vol. 405, no 6, p. 1929-1935Article in journal (Refereed)
    Abstract [en]

    Circulating free fatty acids (FFAs) play important physiological roles as contributing components in cellular structure as well as energy utilization. Elevated levels of circulating FFAs are associated with metabolic aberrations in humans. FFAs differ in chain length and saturation and may be altered in metabolically dysregulated conditions, such as type 2 diabetes mellitus. Potentially, alterations in circulating levels of specific FFAs could also be important in terms of prognostic value. Various methods have been used to analyze FFAs. In this study, a straightforward and accurate method for the determination of FFAs in plasma has been established and evaluated, through conversion of plasma FFAs into acid fluorides followed by conversion to Weinreb amides (dimethylamide). The method is mild, efficient, selective, and quantitative for FFAs, when analyzed with capillary gas chromatography tandem mass spectrometry. Standard curves were linear over the range of 1,000–20,000 ng/mL with a correlation coefficient (r2) of 0.998, and coefficient of variation of triplicate analysis was <10 %. The gas chromatography–mass spectrometry (GC-MS) technique was reproducible and repeatable, and recoveries were above 90 %. From the generated MS spectra, five specific FFAs were identified. An explicit interest was the quantification of palmitate (C16:0) and palmitoleate (C16:1), which have been connected with detrimental and positive effects on the insulin-producing beta cells, respectively. The results demonstrate the suitability of Weinreb amides for efficient and rapid isolation of FFAs in plasma, prior to quantitative GC-MS analysis. We suggest that the method can be used as a routine standardized way of quantifying FFAs.

  • 40.
    Warnakulasuriya, Loretta S.
    et al.
    Univ Colombo, Postgrad Inst Med, Colombo, Sri Lanka.
    Fernando, Manel M. A.
    Colombo North Teaching Hosp, Ragama, Sri Lanka.
    Adikaram, Adikaram V. N.
    Bandaranaike Int Airport, Hlth Unit, Katunayake, Sri Lanka.
    Thawfeek, Abdul R. M.
    Colombo North Teaching Hosp, Ragama, Sri Lanka.
    Anurasiri, Weda-Muhandiramge L.
    Dist Gen Hosp, Negombo, Sri Lanka.
    Silva, Renuka R.
    Wayamba Univ Sri Lanka, Dept Appl Nutr, Kuliyapitiya, Sri Lanka.
    Sirasa, Mohamed S. F.
    Wayamba Univ Sri Lanka, Dept Appl Nutr, Kuliyapitiya, Sri Lanka.
    Rytter, Elisabet
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism.
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Paediatric Inflammation Research.
    Samaranayake, Dulani L.
    Univ Colombo, Dept Community Med, Colombo, Sri Lanka.
    Wickramasinghe, V. Pujitha
    Univ Colombo, Fac Med, Dept Paediat, Kynsey Rd, Colombo 08, Sri Lanka.
    Metformin in the Management of Childhood Obesity: A Randomized Control Trial2018In: CHILDHOOD OBESITY, ISSN 2153-2168, Vol. 14, no 8, p. 553-565Article in journal (Refereed)
    Abstract [en]

    Background: Childhood obesity-related metabolic derangements are increasing among South Asian populations. Dietary and physical activity plans have limited effect. This study aims to assess the effectiveness of metformin in the management of obesity among 8- to 16-year-old children in Gampaha District of Sri Lanka.

    Materials and Methods: A triple-blinded controlled trial was conducted on 150 obese school children. After 12-hour overnight fast, blood was drawn for fasting blood glucose (FBG) and lipid profile. Anthropometry, fat mass (FM), and blood pressure were measured. BMI and insulin resistance were calculated. Children randomly received either metformin (8-10 years-500 mg 12 hourly; 11-16 years-1 g 12 hourly) or placebo. Anthropometry and blood investigations were repeated at 6 and 12 months. Mean difference in outcome measures, adjusted for baseline values, was compared using ANCOVA.

    Results: There were 84/150 boys. Metabolic syndrome was present in 25 (16.7%). A statistically significant adjusted mean reduction was observed in the metformin group compared with placebo, in weight (-0.991 vs. 1.394, p = 0.000), BMI/Age-standard deviation score (SDS; -0.287 vs. -0.116, p = 0.000), %FM/Age-SDS (-0.092 vs. 0.016, p = 0.04), systolic blood pressure (SBP; -0.415 vs. 0.015, p = 0.015), total cholesterol (-0.95 vs. -0.7, p = 0.001), low-density lipoprotein (-0.67 vs. -0.45, p = 0.001), and highly sensitive C-reactive protein (-1.36 vs. 0.08, p = 0.013) at 6 months, and in BMI/Age-SDS (-370 vs. -0.222, p = 0.001), WC/Age-SDS (-0.473 vs. -0.337, p = 0.018), SBP (-0.834 vs. -0.477, p = 0.023), and triglycerides (-0.33 vs. -0.14, p = 0.019) at 12 months.

    Conclusions: Metformin compared with placebo has beneficial effects on anthropometric and metabolic indicators in the management of childhood obesity.

  • 41.
    Weghuber, Daniel
    et al.
    Paracelsus Med Univ, Dept Pediat, Mullner Hauptstr 48, AT-5020 Salzburg, Austria.
    Boyland, Emma
    Univ Liverpool, Dept Psychol Sci, Appetite & Obes Res Grp, Liverpool, Merseyside, England.
    Caroli, Margherita
    Erhardt, Eva
    Univ Pecs, Dept Paediat, Pecs, Hungary.
    Frelut, Marie-Laure
    Forslund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Paediatric Inflammation Research.
    Mazur, Artur
    Univ Rzeszow, Fac Med, Rzeszow, Poland.
    Ring-Dimitriou, Susanne
    Paris Lodron Univ, Dept Sport Sci & Kinesiol, Salzburg, Austria.
    Vlachopapadopoulou, Elpis A.
    Childrens Hosp P&A Kyriakou, Dept Endocrinol, Athens, Greece.
    Thivel, David
    Clermont Auvergne Univ, Lab Metab Adaptat Exercise Physiol & Pathol Condi, Clermont Ferrand, France.
    Childhood Obesity: The Need to Translate Research into Daily Practice: Announcing the Annals of Nutrition and Metabolism as the Official Journal of the European Childhood Obesity Group2019In: Annals of Nutrition and Metabolism, ISSN 0250-6807, E-ISSN 1421-9697, Vol. 74, no 1, p. 80-82Article in journal (Other academic)
1 - 41 of 41
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