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Tengblad, Siv
Publications (8 of 8) Show all publications
Freese, R., Korkalo, L., Vessby, B., Tengblad, S., Vaara, E. M., Hauta-Alus, H., . . . Mutanen, M. (2015). Essential fatty acid intake and serum fatty acid composition among adolescent girls in central Mozambique. British Journal of Nutrition, 113(7), 1086-1095
Open this publication in new window or tab >>Essential fatty acid intake and serum fatty acid composition among adolescent girls in central Mozambique
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2015 (English)In: British Journal of Nutrition, ISSN 0007-1145, E-ISSN 1475-2662, Vol. 113, no 7, p. 1086-1095Article in journal (Refereed) Published
Abstract [en]

Many African diets are low in fat but are currently changing because of nutrition transition. We studied fat and fatty acid (FA) intake and the essential fatty acid (EFA) status of adolescent girls (aged 14-19 years, n 262) in Zambezia Province, central Mozambique. A cross-sectional study was carried out in a city as well as in the towns and rural villages of a coastal and an inland district. Dietary intake and FA sources were studied in a 24 h dietary recall. FA compositions of cholesteryl esters and phospholipids of non-fasting serum samples were analysed by GLC. Fat intake was low (13-18% of energy) in all areas. Coconut and palm oil were the main sources of fat, and soyabean oil and maize were the main sources of PUFA. Compared to Food and Agriculture Organization/WHO 2010 recommendations, intake of linoleic acid (LA, 18 : 2n-6) was inadequate in the coastal district, and intakes of n-3 PUFA were inadequate in all areas. FA compositions of serum lipids differed between areas. The proportions of LA tended to be highest in the city and lowest in the rural areas. The phospholipid mead (20 : 3n-9): arachidonic acid (20 : 4n-6) ratio did not indicate EFA insufficiency. LA proportions in phospholipids were low, but those of long-chain n-6 and n-3 PUFA were high in comparison with Western adolescents. To conclude, fat sources, FA intake and EFA status differed between adolescent girls living in different types of communities. Fat intake was low, but EFA insufficiency was not indicated.

Keywords
Adolescent girls, Essential fatty acids, Sub-Saharan Africa
National Category
Nutrition and Dietetics
Identifiers
urn:nbn:se:uu:diva-253059 (URN)10.1017/S0007114515000306 (DOI)000353216800008 ()25772191 (PubMedID)
Available from: 2015-06-12 Created: 2015-05-20 Last updated: 2017-12-04Bibliographically approved
Vessby, B., Gustafsson, I.-B., Tengblad, S. & Berglund, L. (2013). Indices of fatty acid desaturase activity in healthy human subjects: effects of different types of dietary fat. British Journal of Nutrition, 110(5), 871-879
Open this publication in new window or tab >>Indices of fatty acid desaturase activity in healthy human subjects: effects of different types of dietary fat
2013 (English)In: British Journal of Nutrition, ISSN 0007-1145, E-ISSN 1475-2662, Vol. 110, no 5, p. 871-879Article in journal (Refereed) Published
Abstract [en]

Delta 9-Desaturase (stearoyl-CoA desaturase 1, SCD-1) regulates the desaturation of SFA, mainly stearic and palmitic, to MUFA. Delta 6-Desaturase (D6D) and Delta 5-desaturase (D5D) are involved in the metabolism of linoleic and alpha-linolenic acid to polyunsaturated metabolites. The objective of the present study was to study the effects of different types of dietary fat on indices of fatty acid desaturase (FADS) activity (evaluated as product: precursor ratios) in plasma and skeletal muscle in human subjects. A high SCD-1 index has been related to obesity and metabolic disorders, while the D5D index is associated with insulin sensitivity. Fatty acid composition of serum and skeletal muscle lipids was analysed by GLC during a randomised, controlled, 3-month dietary intervention in healthy subjects. A comparison of the effects of a diet containing butter fat (SFA, n 17) with a diet containing monounsaturated fat (MUFA, n 17), keeping all other dietary components constant, showed a reduced SCD-1 activity index by 20% on the MUFA diet compared with the SFA diet assessed in serum cholesteryl esters. The D6D and D5D indices remained unaffected. Supplementation with long-chain n-3 fatty acids reduced the SCD-1 index by a similar magnitude while the D6D index decreased and the D5D index increased. It is concluded that changes in the type of fat in the diet affect the indices of FADS activity in serum and skeletal muscle in human subjects. The desaturase activity indices estimated from the serum lipid ester composition are significantly related to corresponding indices studied in skeletal muscle phospholipids.

Keywords
Fatty acid desaturase index, Dietary fat, Serum lipid fatty acid composition, Skeletal muscle
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-207490 (URN)10.1017/S0007114512005934 (DOI)000323281500011 ()
Available from: 2013-09-17 Created: 2013-09-16 Last updated: 2017-12-06Bibliographically approved
Swenne, I., Rosling, A., Tengblad, S. & Vessby, B. (2011). Omega-3 polyunsaturated essential fatty acids are associated with depression in adolescents with eating disorders and weight loss. Acta Paediatrica, 100(12), 1610-1615
Open this publication in new window or tab >>Omega-3 polyunsaturated essential fatty acids are associated with depression in adolescents with eating disorders and weight loss
2011 (English)In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 100, no 12, p. 1610-1615Article in journal (Refereed) Published
Abstract [en]

Aim: To study the relationship between polyunsaturated fatty acids (PUFA) status and depression in adolescents with eating disorders (ED) and weight loss.

Methods: Erythrocyte membranes from 217 adolescents (209 girls, eight boys) with ED were analysed for fatty acids (FA). ED and depression were diagnosed by clinical interviews and supported by self-report instruments.

Results: Adolescents with ED and depression did not differ from those with ED only in terms of age, BMI, weight loss and duration of disease. In their FA profile, depressed adolescents had lower proportions of eicosapentanoic acid (EPA) and docosahexanoic acid (DHA), the end products of the omega 3 PUFA series. The ratio of long-chain (>18 carbons) omega 6/omega 3 PUFA was therefore higher in depressed adolescents. Indices of desaturase activities did not differ between depressed and not depressed adolescents.

Conclusion: Low omega 3 status is related to depression in adolescents with ED. This cannot be explained by differences in weight (loss) and duration of disease, nor by differences in PUFA processing by desaturases. Data suggest a lower dietary intake of omega 3 PUFA in those with depression. Further investigations should determine whether omega 3 PUFA status improves by refeeding only or whether supplementation with PUFA is warranted.

Keywords
Delta-5-desaturase, Delta-6-desaturase, Depression, Eating disorder, Essential fatty acids
National Category
Pediatrics
Identifiers
urn:nbn:se:uu:diva-162681 (URN)10.1111/j.1651-2227.2011.02400.x (DOI)000296899500026 ()21732977 (PubMedID)
Available from: 2011-12-07 Created: 2011-12-05 Last updated: 2017-12-08Bibliographically approved
Andersson, A., Tengblad, S., Karlström, B., Kamal-Eldin, A., Landberg, R., Basu, S., . . . Vessby, B. (2007). Whole-grain foods do not affect insulin sensitivity or markers of lipid peroxidation and inflammation in healthy, moderately overweight subjects. Journal of Nutrition, 137(6), 1401-1407
Open this publication in new window or tab >>Whole-grain foods do not affect insulin sensitivity or markers of lipid peroxidation and inflammation in healthy, moderately overweight subjects
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2007 (English)In: Journal of Nutrition, ISSN 0022-3166, E-ISSN 1541-6100, Vol. 137, no 6, p. 1401-1407Article in journal (Refereed) Published
Abstract [en]

High intakes of whole grain foods are inversely related to the incidence of coronary heart diseases and type 2 diabetes, but the mechanisms remain unclear. Our study aimed to evaluate the effects of a diet rich in whole grains compared with a diet containing the same amount of refined grains on insulin sensitivity and markers of lipid peroxidation and inflammation. In a randomized crossover study, 22 women and 8 men (BMI 28 +/- 2) were given either whole-grain or refined-grain products (3 bread slices, 2 crisp bread slices, 1 portion muesli, and 1 portion pasta) to include in their habitual daily diet for two 6-wk periods. Peripheral insulin sensitivity was determined by euglycemic hyperinsulinemic clamp tests. 8-Iso-prostaglandin F(2alpha) (8-iso PGF(2alpha)), an F(2)-isoprostane, was measured in the urine as a marker of lipid peroxidation, and highly sensitive C-reactive protein and IL-6 were analyzed in plasma as markers of inflammation. Peripheral insulin sensitivity [mg glucose . kg body wt(-1) . min(-1) per unit plasma insulin (mU/L) x 100] did not improve when subjects consumed whole-grain products (6.8 +/- 3.0 at baseline and 6.5 +/- 2.7 after 6 wk) or refined products (6.4 +/- 2.9 and 6.9 +/- 3.2, respectively) and there were no differences between the 2 periods. Whole-grain consumption also did not affect 8-iso-PGF(2alpha) in urine, IL-6 and C-reactive protein in plasma, blood pressure, or serum lipid concentrations. In conclusion, substitution of whole grains (mainly based on milled wheat) for refined-grain products in the habitual daily diet of healthy moderately overweight adults for 6-wk did not affect insulin sensitivity or markers of lipid peroxidation and inflammation.

Keywords
whole grain, diet, health, insulin sensitivity
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-11076 (URN)000246878000009 ()17513398 (PubMedID)
Available from: 2007-05-22 Created: 2007-05-22 Last updated: 2017-12-11Bibliographically approved
Andersson, A., Tengblad, S., Karlström, B., Kamal-Edin, A., Landberg, R., Åman, P. & Vessby, B. (2006). Oförändrad insulinkänslighet och lipidperoxidation efter ökat intag av fullkornsprodukter hos friska män och kvinnor.. In: Livsmedelsforskardagarna.
Open this publication in new window or tab >>Oförändrad insulinkänslighet och lipidperoxidation efter ökat intag av fullkornsprodukter hos friska män och kvinnor.
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2006 (Swedish)In: Livsmedelsforskardagarna, 2006Conference paper, Published paper (Other (popular scientific, debate etc.))
Abstract [en]

Flertalet epidemilogiska studier har visat positiva hälsoeffekter av ett högt intag av fullkornsprodukter. Framförallt är en minska risk för hjärtinfarkt/sjukdom visad, och data

talar även för en minskad risk för typ 2 diabetes. Mekanismerna bakom fullkornets positiva effekter är dock fortfarande oklara. Såväl en förbättrad insulinkänslighet som en minskad förekomst av lipidperoxidation och inflammation har föreslagits, vilket vi därför önskade undersöka i denna studie.

I en randomiserad cross-over design deltog 30 lätt överviktiga (BMI 282) kvinnor (n=22) och män (n=8). Under två på varandra följande 6 veckors perioder fick deltagarna antingen cerealieprodukter med fullkorn eller utan fullkorn. En standardiserad mängd (3 skivor mjukt bröd, 2 skivor hårt bröd, 1 portion musli/gryn och 1 portion pasta/ris) inkluderades dagligen i deras vanliga kost. Perifer insulinkänslighet mättes med euglykemisk hyperinsulinemisk clampteknik. Lipidperoxidationsmarkören 8-iso-PGF2 mättes i urin och inflammationsmarkörerna CRP och IL-6 mättes i plasma. Kostinterventionen monitorerades med hjälp av vägda kostregisteringar och dagboksnoteringar.

Kostregistreringarna bekräftade ett högre intag av fiber och flertalet mineralämnen under fullkornsperioden jämfört med icke-fullkornsperioden. Vi fann dock ingen förbättring av insulinkänsligheten och inte heller någon förändring av lipidperoxidation eller inflammationsmarkörer.

Att ersätta icke-fullkorns produkter med fullkorn under en 6 veckors period hos vuxna lätt överviktiga friska män och kvinnor gav således ingen mätbar effekt på vare sig insulinkänslighet, lipidperoxidation eller inflammationsmarkörer. Frågan om vilka mekanismerna som ligger bakom de positiva hälsoeffekterna av fullkornsprodukter kvarstår och längre koststudier på deltagare med varierande metaboltstatus behövs.

Keywords
fullkorn, kostintervention, insulinkänslighet, lipidperoxidation, inflammation
National Category
Nutrition and Dietetics Food Science
Identifiers
urn:nbn:se:uu:diva-18452 (URN)
Available from: 2006-12-21 Created: 2006-12-21
Andersson, A., Tengblad, S., Karlström, B., Kamal-Eldin, A., Landberg, R., Åman, P. & Vessby, B. (2006). Ökat intag av fullkornsprodukter. Effekter på insulinkänslighet, lipidperoxidation och inflammationsmarkörer?. In: Svenska Läkarsällskapets Riksstämma.
Open this publication in new window or tab >>Ökat intag av fullkornsprodukter. Effekter på insulinkänslighet, lipidperoxidation och inflammationsmarkörer?
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2006 (Swedish)In: Svenska Läkarsällskapets Riksstämma, 2006Conference paper, Published paper (Other (popular scientific, debate etc.))
Abstract [en]

Bakgrund: Flertalet epidemiologiska studier har visat positiva hälsoeffekter av ett högt intag av fullkornsprodukter. Framförallt är en minskad risk för hjärtinfarkt/sjukdom visad, men data talar även för en minskad risk för typ 2 diabetes. Mekanismerna bakom fullkornets positiva effekter är dock fortfarande oklara. Såväl en förbättrad insulinkänslighet som en minskad förekomst av lipidperoxidation och inflammation har föreslagits, vilket vi önskade undersöka i denna studie.

Metod: I en randomiserad cross-over design deltog 30 lätt överviktiga (BMI 282) kvinnor (n=22) och män (n=8). Under två på varandra följande 6-veckors perioder fick deltagarna antingen cerealieprodukter med fullkorn eller utan fullkorn. En standardiserad mängd (3 skivor mjukt bröd, 2 skivor hårt bröd, 1 portion musli/gryn och 1 portion pasta/ris) inkluderades dagligen i deras vanliga kost. Perifer insulinkänslighet mättes med euglykemisk hyperinsulinemisk clampteknik. Lipidperoxidationsmarkören 8-iso-PGF2 mättes i urin och inflammationsmarkörerna CRP och IL-6 mättes i plasma. Kostinterventionen monitorerades med hjälp av vägda kostregisteringar och dagboksnoteringar.

Resultat: Kostregistreringarna bekräftade ett högre intag av fiber och flertalet mineralämnen under fullkornsperioden jämfört med icke-fullkornsperioden. Vi fann dock ingen förbättring av insulinkänsligheten och inte heller någon förändring av lipidperoxidation eller inflammationsmarkörer.

Sammanfattning: Att ersätta icke-fullkorns produkter med fullkorn under en 6-veckors period hos vuxna lätt överviktiga friska män och kvinnor gav ingen mätbar effekt på insulinkänslighet, lipidperoxidation eller inflammationsmarkörer. Frågan om vilka mekanismerna som ligger bakom de positiva hälsoeffekterna av fullkornsprodukter kvarstår och längre koststudier på deltagare med varierande metaboltstatus behövs.

Keywords
fullkorn, kostintervention, insulinkänslighet, lipidperoxidation, inflammation
National Category
Food Science Nutrition and Dietetics
Identifiers
urn:nbn:se:uu:diva-18451 (URN)
Available from: 2006-12-21 Created: 2006-12-21
Andersson, A., Nälsén, C., Tengblad, S. & Vessby, B. (2002). Fatty acid composition of skeletal muscle reflects dietary fat compositionin humans. American Journal of Clinical Nutrition, 76(6), 1222-1229
Open this publication in new window or tab >>Fatty acid composition of skeletal muscle reflects dietary fat compositionin humans
2002 (English)In: American Journal of Clinical Nutrition, ISSN 0002-9165, E-ISSN 1938-3207, Vol. 76, no 6, p. 1222-1229Article in journal (Refereed) Published
Abstract [en]

Background: It is still unknown whether the fatty acid composition of human skeletal muscle lipids is directly influenced by the fat composition of the diet.

Objective: We investigated whether the fatty acid composition of the diet is reflected in the fatty acid profile of skeletal muscle phospholipids and triacylglycerols.

Design: Thirty-two healthy adults (25 men and 7 women) included in a larger controlled, multicenter dietary study were randomly assigned to diets containing a high proportion of either saturated fatty acids (SFAs) [total fat, 36% of energy; SFAs, 18% of energy; monounsaturated fatty acids (MUFAs), 10% of energy] or MUFAs (total fat, 35% of energy; SFAs, 9% of energy; MUFAs, 19% of energy) for 3 mo. Within each diet group, there was a second random assignment to supplementation with fish oil capsules [containing 3.6 g n−3 fatty acids/d; 2.4 g eicosapentaenoic acid (20:5n−3) and docosahexaenoic acid (22:6n−3)] or placebo. A muscle biopsy sample was taken from the vastus lateralis muscle after the diet period. Parallel analyses of diet and supplementation effects were performed.

Results: The proportions of myristic (14:0), pentadecanoic (15:0), heptadecanoic (17:0), and palmitoleic (16:1n−7) acids in the skeletal muscle phospholipids were higher and the proportion of oleic acid (18:1n−9) was lower in the SFA group than in the MUFA group. The proportion of total n−3 fatty acids in the muscle phospholipids was ≈2.5 times higher, with a 5 times higher proportion of eicosapentaenoic acid (20:5n−3), in subjects supplemented with n−3 fatty acids than in those given placebo. Similar differences were observed in the skeletal muscle triacylglycerols.

Conclusion: The fatty acid composition of skeletal muscle lipids reflects the fatty acid composition of the diet in healthy men and women.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-89439 (URN)
Available from: 2001-09-19 Created: 2001-09-19 Last updated: 2017-12-14Bibliographically approved
Andersson, A., Nälsén, C., Tengblad, S. & Vessby, B. (2000). Dietary fat quality influences the fatty acid profile of skeletal muscle phospholipids in humans.. In: Presentation vid 7th Nordic Nutrition Congress, Mariehamn, Åland 18-21 juni, 2000: Scand. j. Nutr. Supplement 37, Vol 44, 2S, 2000.
Open this publication in new window or tab >>Dietary fat quality influences the fatty acid profile of skeletal muscle phospholipids in humans.
2000 (Swedish)In: Presentation vid 7th Nordic Nutrition Congress, Mariehamn, Åland 18-21 juni, 2000: Scand. j. Nutr. Supplement 37, Vol 44, 2S, 2000, 2000Conference paper, Published paper (Other (popular scientific, debate etc.))
Identifiers
urn:nbn:se:uu:diva-18455 (URN)
Available from: 2006-12-21 Created: 2006-12-21
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