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  • 1.
    Andersson, Sofia E. M.
    et al.
    Univ Gothenburg, Sahlgrenska Acad, Dept Rheumatol & Inflammat Res, Inst Med, Box 480, S-40530 Gothenburg, Sweden..
    Lange, Elvira
    Univ Gothenburg, Ctr Person Ctr Care, Gothenburg, Sweden.;Univ Gothenburg, Sahlgrenska Acad, Inst Neurosci & Physiol, Dept Hlth & Rehabil, Gothenburg, Sweden..
    Kucharski, Daniel
    Univ Gothenburg, Sahlgrenska Acad, Dept Rheumatol & Inflammat Res, Inst Med, Box 480, S-40530 Gothenburg, Sweden..
    Svedlund, Sara
    Univ Gothenburg, Sahlgrenska Acad, Inst Med, Dept Mol & Clin Med, Gothenburg, Sweden..
    Önnheim, Karin
    Univ Gothenburg, Sahlgrenska Acad, Dept Rheumatol & Inflammat Res, Inst Med, Box 480, S-40530 Gothenburg, Sweden..
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Josefsson, Elisabet
    Univ Gothenburg, Sahlgrenska Acad, Dept Rheumatol & Inflammat Res, Inst Med, Box 480, S-40530 Gothenburg, Sweden..
    Lord, Janet M.
    Univ Birmingham, MRC ARUK Ctr Musculoskeletal Ageing Res, Inst Inflammat & Ageing, Birmingham, W Midlands, England..
    Mårtensson, Inga-Lill
    Univ Gothenburg, Sahlgrenska Acad, Dept Rheumatol & Inflammat Res, Inst Med, Box 480, S-40530 Gothenburg, Sweden..
    Mannerkorpi, Kaisa
    Univ Gothenburg, Ctr Person Ctr Care, Gothenburg, Sweden.;Univ Gothenburg, Sahlgrenska Acad, Inst Neurosci & Physiol, Dept Hlth & Rehabil, Gothenburg, Sweden..
    Gjertsson, Inger
    Univ Gothenburg, Sahlgrenska Acad, Dept Rheumatol & Inflammat Res, Inst Med, Box 480, S-40530 Gothenburg, Sweden.;Univ Gothenburg, Ctr Person Ctr Care, Gothenburg, Sweden..
    Moderate- to high intensity aerobic and resistance exercise reduces peripheral blood regulatory cell populations in older adults with rheumatoid arthritis2020Ingår i: Immunity & Ageing, E-ISSN 1742-4933, Vol. 17, artikel-id 12Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Objective: Exercise can improve immune health and is beneficial for physical function in patients with rheumatoid arthritis (RA), but the immunological mechanisms are largely unknown. We evaluated the effect of moderate- to high intensity exercise with person-centred guidance on cells of the immune system, with focus on regulatory cell populations, in older adults with RA.

    Methods: Older adults (>= 65 years) with RA were randomized to either 20-weeks of moderate - to high intensity aerobic and resistance exercise (n = 24) or to an active control group performing home-based exercise of light intensity (n = 25). Aerobic capacity, muscle strength, DAS28 and CRP were evaluated. Blood samples were collected at baseline and after 20 weeks. The frequency of immune cells defined as adaptive regulatory populations, CD4 + Foxp3 + CD25 + CD127- T regulatory cells (Tregs) and CD19 + CD24hiCD38hi B regulatory cells (Bregs) as well as HLA-DR-/lowCD33 + CD11b + myeloid derived suppressor cells (MDSCs), were assessed using flow cytometry.

    Results: After 20 weeks of moderate- to high intensity exercise, aerobic capacity and muscle strength were significantly improved but there were no significant changes in Disease Activity Score 28 (DAS28) or CRP. The frequency of Tregs and Bregs decreased significantly in the intervention group, but not in the active control group. The exercise intervention had no effect on MDSCs. The reduction in regulatory T cells in the intervention group was most pronounced in the female patients.

    Conclusion: Moderate- to high intensity exercise in older adults with RA led to a decreased proportion of Tregs and Bregs, but that was not associated with increased disease activity or increased inflammation.

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  • 2.
    Bergquist, Jonas
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Kemiska sektionen, Institutionen för kemi - BMC, Analytisk kemi.
    Baykut, Gökhan
    Bruker Daltonik GmbH, 28359 Bremen, Germany.
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Witt, Matthias
    Bruker Daltonik GmbH, 28359 Bremen, Germany.
    Mayer, Franz-Josef
    Bruker Daltonik GmbH, 28359 Bremen, Germany.
    Baykut, Doan
    Institute of Biophysics, University of Frankfurt, 60438 Frankfurt/M, Germany.
    Human Myocardial Protein Pattern Reveals Cardiac Diseases2012Ingår i: International Journal of Proteomics, ISSN 2090-2174, Vol. 2012, s. 342659-Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Proteomic profiles of myocardial tissue in two different etiologies of heart failure were investigated using high performance liquid chromatography (HPLC)/Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Right atrial appendages from 10 patients with hemodynamically significant isolated aortic valve disease and from 10 patients with isolated symptomatic coronary heart disease were collected during elective cardiac surgery. As presented in an earlier study by our group (Baykut et al., 2006), both disease forms showed clearly different pattern distribution characteristics. Interesting enough, the classification patterns could be used for correctly sorting unknown test samples in their correct categories. However, in order to fully exploit and also validate these findings there is a definite need for unambiguous identification of the differences between different etiologies at molecular level. In this study, samples representative for the aortic valve disease and coronary heart disease were prepared, tryptically digested, and analyzed using an FT-ICR MS that allowed collision-induced dissociation (CID) of selected classifier masses. By using the fragment spectra, proteins were identified by database searches. For comparison and further validation, classifier masses were also fragmented and analyzed using HPLC-/Matrix-assisted laser desorption ionization (MALDI) time-offlight/time-of-flight (TOF/TOF) mass spectrometry. Desmin and lumican precursor were examples of proteins found in aortic samples at higher abundances than in coronary samples. Similarly, adenylate kinase isoenzyme was found in coronary samples at a higher abundance. The described methodology could also be feasible in search for specific biomarkers in plasma or serum for diagnostic purposes.

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  • 3.
    Bergquist, Maria
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi. Univ Gothenburg, Sahlgrenska Acad, Dept Rheumatol & Inflammat Res, Gothenburg, Sweden.
    Hastbacka, Johanna
    Univ Helsinki, Intens Care Med, Dept Anesthesiol Intens Care Med & Pain Med, Helsinki, Finland;Helsinki Univ Hosp, Helsinki, Finland.
    Glaumann, Christian
    Uppsala Univ Hosp, Burn Ctr, Dept Plast & Maxillofacial Surg, Uppsala, Sweden.
    Fredén, Filip
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Huss, Fredrik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Plastikkirurgi. Uppsala Univ Hosp, Burn Ctr, Dept Plast & Maxillofacial Surg, Uppsala, Sweden.
    Lipcsey, Miklós
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet.
    The time-course of the inflammatory response to major burn injury and its relation to organ failure and outcome2019Ingår i: Burns, ISSN 0305-4179, E-ISSN 1879-1409, Vol. 45, nr 2, s. 354-363Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Burn injury causes major inflammatory activation and cytokine release, however, the temporal resolution of the acute and sub-acute inflammatory response has not yet been fully delineated. To this end, we have quantified 20 inflammatory mediators in plasma from 44 adult patients 0-21 days after burn injury and related the time course of these mediators to % total body surface area (TBSA) burned, clinical parameters, organ failure and outcome. Of the cytokines analyzed in these patients, interleukin 6 (IL-6), IL-8, IL-10 and monocyte chemoattractant protein 1 (MCP-1) correlated to the size of the injury at 24-48h after burn injury. In our study, the concentration of IL-10 had prognostic value in patients with burn injury both measured at admission and at 24-48h after injury. However, simple demographic data such as age, % burned TBSA, inhalation injury and their combination, the Baux score and modified Baux score, outperform most of the cytokines, with the exception of IL-8 and MCP1 levels on admission, in predicting death.

  • 4.
    Bergquist, Maria
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet.
    Huss, Fredrik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Plastikkirurgi. Uppsala Burn Center, Uppsala University Hospital, Uppsala, Sweden.
    Fredén, Filip
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård. Uppsala Burn Center, Uppsala University Hospital, Uppsala, Sweden.
    Hedenstierna, Göran
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet.
    Hästbacka, Johanna
    Intensive Care Medicine Department of Perioperative, Intensive Care and Pain Medicine, University of Helsinki and Helsinki University Hospital, Finland.
    Rockwood, Alan L.
    ARUP Institute for Clinical & Experimental Pathology, 500 Chipeta Way, Salt Lake City, UT 84108-1221, USA;Department of Pathology, University of Utah School of Medicine, Salt Lake City, USA.
    Kushnir, Mark M.
    ARUP Institute for Clinical & Experimental Pathology, 500 Chipeta Way, Salt Lake City, UT 84108-1221, USA;Department of Pathology, University of Utah School of Medicine, Salt Lake City, USA.
    Bergquist, Jonas
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Kemiska sektionen, Institutionen för kemi - BMC, Analytisk kemi. Department of Pathology, University of Utah School of Medicine, Salt Lake City, USA.
    Altered adrenal and gonadal steroids biosynthesis in patients with burn injury2016Ingår i: Clinical Mass Spectrometry, ISSN 2213-8005, E-ISSN 2376-9998, Vol. 1, s. 19-26Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Introduction: Burn injury inevitably leads to changes in the endogenous production of cytokines, as well as adrenal and gonadal steroids. Previous studies have reported gender-related differences in outcome following burn injury, which suggests that gonadal steroids may play a role. The aim of this study was to assess alterations in concentration of endogenous steroids in patients with burn injury.

    Methods: For this single-center, prospective descriptive study, high-sensitivity liquid chromatography tandem mass spectrometry (LC-MS/MS)-based steroid quantification was used to determine longitudinal profiles of the concentrations of endogenous steroids in plasma from sixteen adult male patients with burn injury (14.5-72% of total body surface area). Steroids were extracted from plasma samples and analyzed using multiple reaction monitoring acquisition, with electrospray ionization on a triple quadruple mass spectrometer. Total protein concentration was measured in the samples using spectrophotometry.

    Results: Steroid and total protein concentration distributions were compared to reference intervals characteristic of healthy adult men. Concentrations of the following steroids in plasma of burn injured patients were found to correlate positively to the area of the burn injury: cortisol (r = 0.84), corticosterone (r = 0.73), 11-deoxycortisol (r = 0.72), androstenedione (r = 0.72), 17OH-progesterone (r = 0.68), 17OH-pregnenolone (r = 0.64) and pregnenolone (r = 0.77). Concentrations of testosterone decreased during the acute phase and were up to ten-times lower than reference values for healthy adult men, while concentrations of estrone were elevated. By day 21 after injury, testosterone concentrations were increased in younger, but not older, patients. The highest concentrations of estrone were observed on day 3 after the injury and then declined by day 21 to concentrations comparable to those observed on the day of the injury.

    Conclusion: Burn injury alters endogenous steroid biosynthesis, with decreased testosterone concentrations and elevated estrone concentrations, during the first 21 days after the injury. Concentrations of glucocorticoids, progestagens and androgen precursors correlated positively with the area of burn injury. The finding of increased estrone following burn injury needs to be confirmed in a larger hypothesis driven study.

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  • 5.
    Bergquist, Maria
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Huss, Fredrik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Plastikkirurgi.
    Hästbacka, Johanna
    Lindholm, Catharina
    Martijn, Cecile
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Kemiska sektionen, Institutionen för kemi - BMC.
    Rylander, Christian
    Hedenstierna, Göran
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Fredén, Filip
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Glucocorticoid receptor expression and binding capacity in patients with burn injury2016Ingår i: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 60, nr 2, s. 213-221Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background

    Burn injuries are associated with strong inflammation and risk of secondary sepsis which both may affect the function of the glucocorticoid receptor (GR). The aim of this study was to determine GR expression and binding capacity in leucocytes from patients admitted to a tertiary burn center.

    Methods

    Blood was sampled from 13 patients on admission and days 7, 14 and 21, and once from 16 healthy subjects. Patients were grouped according to the extent of burn and to any sepsis on day 7. Expression and binding capacity of GR were determined as arbitrary units using flow cytometry.

    Results

    GR expression and binding capacity were increased compared to healthy subjects in most circulating leucocyte subsets on admission irrespective of burn size. Patients with sepsis on day 7 displayed increased GR expression in T lymphocytes (51.8%, < 0.01) compared to admission. There was a negative correlation between GR binding capacity in neutrophils and burn size after 14 days (< 0.05).

    Conclusions

    GR expression and binding capacity are increased in most types of circulating leucocytes of severely burned patients on their admission to specialized burn care. If sepsis is present after 1 week, it is associated with higher GR expression in T lymphocytes and NK cells.

  • 6.
    Bergquist, Maria
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Jirholt, Pernilla
    Nurkkala, Merja
    Rylander, Christian
    Hedenstierna, Göran
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Lindholm, Catharina
    Glucocorticoid receptor function is decreased in neutrophils during endotoxic shock2014Ingår i: Journal of Infection, ISSN 0163-4453, E-ISSN 1532-2742, Vol. 69, nr 2, s. 113-122Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    OBJECTIVES: It remains unclear whether glucocorticoid treatment can improve the outcome of sepsis. The aim of the present study was to investigate if glucocorticoid receptor (GR) expression and function is impaired in lipopolysaccharide (LPS) induced shock, and whether the time point for start of glucocorticoid treatment affects the outcome.

    METHODS: Male C57BL/6J mice were administered LPS i.p. and GR expression and binding ability in blood and spleen leukocytes were analysed by flow cytometry. GR translocation was analysed using Image Stream technique. The effect of dexamethasone treatment started 2 h before or 2, 12 or 36 h after LPS administration on survival was studied.

    RESULTS: Despite increased GR expression in neutrophils after LPS administration, the GR binding capacity was reduced. In addition, GR translocation was decreased in neutrophils and T lymphocytes from endotoxic mice at 12 h compared to control animals. Dexamethasone treatment improved survival only when started early (2 h) after LPS administration.

    CONCLUSION: The decreased glucocorticoid responsiveness displayed by neutrophils, in combination with their increased numbers, may explain why survival is increased only when dexamethasone treatment is given early during LPS induced shock.

  • 7.
    Bergquist, Maria
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Jonasson, Sofia
    Hjoberg, Josephine
    Hedenstierna, Göran
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Hanrieder, Joerg
    Comprehensive multiplexed protein quantitation delineates eosinophilic and neutrophilic experimental asthma2014Ingår i: BMC Pulmonary Medicine, E-ISSN 1471-2466, Vol. 14, s. 110-Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background: Improvements in asthma diagnosis and management require deeper understanding of the heterogeneity of the complex airway inflammation. We hypothesise that differences in the two major inflammatory phenotypes of asthma; eosinophilic and neutrophilic asthma, will be reflected in the lung protein expression profile of murine asthma models and can be delineated using proteomics of bronchoalveolar lavage (BAL). Methods: BAL from mice challenged with ovalbumin (OVA/OVA) alone (standard model of asthma, here considered eosinophilic) or OVA in combination with endotoxin (OVA/LPS, model of neutrophilic asthma) was analysed using liquid chromatography coupled to high resolution mass spectrometry, and compared with steroid-treated animals and healthy controls. In addition, conventional inflammatory markers were analysed using multiplexed ELISA (Bio-Plex T assay). Multivariate statistics was performed on integrative proteomic fingerprints using principal component analysis. Proteomic data were complemented with lung mechanics and BAL cell counts. Results: Several of the analysed proteins displayed significant differences between the controls and either or both of the two models reflecting eosinophilic and neutrophilic asthma. Most of the proteins found with mass spectrometry analysis displayed a considerable increase in neutrophilic asthma compared with the other groups. Conversely, the larger number of the inflammatory markers analysed with Bio-Plex T analysis were found to be increased in the eosinophilic model. In addition, major inflammation markers were correlated to peripheral airway closure, while commonly used asthma biomarkers only reflect central inflammation. Conclusion: Our data suggest that the commercial markers we are currently relying on to diagnose asthma subtypes are not giving us comprehensive or specific enough information. The analysed protein profiles allowed to discriminate the two models and may add useful information for characterization of different asthma phenotypes.

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  • 8.
    Bergquist, Maria
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Lindholm, Catharina
    Strinnholm, Morten
    Hedenstierna, Göran
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Rylander, Christian
    Impairment of neutrophilic glucocorticoid receptor function in patients treated with steroids for septic shock2015Ingår i: Intensive Care Medicine Experimental, E-ISSN 2197-425X, Vol. 3, nr 1, artikel-id 23Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    BACKGROUND: Glucocorticoid (GC) treatment has variable effect in sepsis. This may be explained by decreased expression or function of the glucocorticoid receptor (GR). The aim of this study was to determine GR expression and binding capacity in patients during and after sepsis.

    METHODS: In this prospective, non-interventional clinical study, peripheral blood and clinical data were collected from 20 adult patients at five timepoints during sepsis and 5-13 months after recovery. GR expression and binding capacity were assessed by flow cytometry.

    RESULTS: GR expression was higher in T lymphocytes from patients with septic shock compared to healthy subjects (p = 0.01). While there was no difference in GR expression between GC-treated and non-treated patients, GR binding capacity was lower in GC-treated patients at admission compared to healthy subjects (p ≤ 0.03). After the acute inflammation inflammatory phase, GR binding capacity was still lower in neutrophils of GC-treated patients, compared to healthy subjects (p = 0.01). On admission, GR binding capacity in T lymphocytes and neutrophils was inversely correlated with noradrenaline dose and lactate (p ≤ 0.03).

    CONCLUSIONS: Our data suggest that GR expression is increased in T lymphocytes during septic shock regardless of GC treatment, while GR binding capacity is decreased in neutrophils in GC-treated patients. As neutrophils are the predominant circulating leucocyte in septic shock, their decreased GR binding capacity may impede the response to exogenous or endogenous glucocorticoids.

  • 9.
    Bergquist, Maria
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Nurkkala, Merja
    Rylander, Christian
    Kristiansson, Erik
    Hedenstierna, Göran
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Lindholm, Catharina
    Expression of the glucocorticoid receptor is decreased in experimental Staphylococcus aureus sepsis2013Ingår i: Journal of Infection, ISSN 0163-4453, E-ISSN 1532-2742, Vol. 67, nr 6, s. 574-583Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Introduction: Glucocorticoid treatment in septic shock remains controversial after recent trials. We hypothesized that failure to respond to steroid therapy may be caused by decreased expression and/or function of glucocorticoid receptors (GR) and studied this in a mouse model of Staphylococcus aureus sepsis. The impact of timing of dexamethasone treatment was also investigated. Methods: Male C57BL/6J mice were intravenously inoculated with S. aureus and GR expression and binding ability in blood, spleen and lymph nodes were analysed by means of flow cytometry. GR translocation was analysed using Image Stream. Septic mice were administered dexamethasone at 22, 26, 48, 72 and 96 h after inoculation and body weight, as a sign of dehydration, was observed. Results: GR expression was decreased in septic animals, but not the ligand binding capacity. GR translocation was decreased in septic mice compared to control animals. Early dexamethasone treatment (22 and 26 h) improved clinical outcome as studied by weight gain compared to when treatment was started at later time points (48, 72 and 96 h). Conclusion: Our data provide evidence that GR expression is progressively decreased in experimental sepsis and that dexamethasone has a decreased ability to translocate into the cell nucleus. This may explain why steroid treatment is only beneficial when administered early in sepsis and septic shock. 

  • 10.
    Bergquist, Maria
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Samuelsson, Line
    Department of Surgical and Perioperative Sciences, Anaesthesiology and Critical Care Medicine (Östersund), Umeå University, Umeå, Sweden.
    Larsson, Anders
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk kemi.
    Tydén, Jonas
    Department of Surgical and Perioperative Sciences, Anaesthesiology and Critical Care Medicine (Östersund), Umeå University, Umeå, Sweden.
    Johansson, Joakim
    Department of Surgical and Perioperative Sciences, Anaesthesiology and Critical Care Medicine (Östersund), Umeå University, Umeå, Sweden.
    Lipcsey, Miklós
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    TNFR1, TNFR2, neutrophil gelatinase-associated lipocalin and heparin binding protein in identifying sepsis and predicting outcome in an intensive care cohort2020Ingår i: Scientific Reports, E-ISSN 2045-2322, Vol. 10, nr 1, artikel-id 15350Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    To date no biomarkers can aid diagnosing sepsis with adequate accuracy. We set out to assess the ability of Tumor necrosis factor receptor (TNFR) 1 and 2, Neutrophil gelatinase-associated lipocalin (NGAL) and Heparin binding protein (HBP) to discriminate sepsis from non-infected critically ill patients in a large ICU cohort, and to evaluate their value to predict mortality at 30 days. Adult patients admitted to the ICU with an arterial catheter were included. Clinical data and blood samples were prospectively recorded daily. Diagnoses were set retrospectively. Descriptive statistics and logistic regression models were used. NGAL, TNFR1 and TNFR2 were higher in sepsis patients compared to other diagnoses, as well as in non-survivors compared to survivors. In addition, these biomarkers increased with increasing stages of acute kidney injury. TNFR1 and TNFR2 performed similarly to NGAL and CRP in identifying sepsis patients, but they performed better than CRP in predicting 30-day mortality in this ICU cohort. Thus, TNFR1 and TNFR2 may be particularly useful in identifying high risk sepsis patients and facilitate relevant health care actions in this group of sepsis patients.

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  • 11.
    Borges, Joao Batista
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet.
    Costa, Eduardo L. V.
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Lucchetta, Luca
    Widström, Charles
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Avdelningen för sjukhusfysik.
    Maripuu, Enn
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Avdelningen för sjukhusfysik.
    Suarez-Sipmann, Fernando
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet.
    Larsson, Anders
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Amato, Marcelo B. P.
    Hedenstierna, Göran
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Lung Inflammation Persists After 27 Hours of Protective Acute Respiratory Distress Syndrome Network Strategy and Is Concentrated in the Nondependent Lung2015Ingår i: Critical Care Medicine, ISSN 0090-3493, E-ISSN 1530-0293, Vol. 43, nr 5, s. E123-E132Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Objective: PET with [F-18]fluoro-2-deoxy-D-glucose can be used to image cellular metabolism, which during lung inflammation mainly reflects neutrophil activity, allowing the study of regional lung inflammation in vivo. We aimed at studying the location and evolution of inflammation by PET imaging, relating it to morphology (CT), during the first 27 hours of application of protective-ventilation strategy as suggested by the Acute Respiratory Distress Syndrome Network, in a porcine experimental model of acute respiratory distress syndrome. Design: Prospective laboratory investigation. Setting: University animal research laboratory. Subjects: Ten piglets submitted to an experimental model of acute respiratory distress syndrome. Interventions: Lung injury was induced by lung lavages and 210 minutes of injurious mechanical ventilation using low positive end-expiratory pressure and high inspiratory pressures. During 27 hours of controlled mechanical ventilation according to Acute Respiratory Distress Syndrome Network strategy, the animals were studied with dynamic PET imaging of [F-18]fluoro-2-deoxy-D-glucose at two occasions with 24-hour interval between them. Measurements and Main Results: [F-18]fluoro-2-deoxy-D-glucose uptake rate was computed for the total lung, four horizontal regions from top to bottom (nondependent to dependent regions) and for voxels grouped by similar density using standard Hounsfield units classification. The global lung uptake was elevated at 3 and 27 hours, suggesting persisting inflammation. In both PET acquisitions, nondependent regions presented the highest uptake (p = 0.002 and p = 0.006). Furthermore, from 3 to 27 hours, there was a change in the distribution of regional uptake (p = 0.003), with more pronounced concentration of inflammation in nondependent regions. Additionally, the poorly aerated tissue presented the largest uptake concentration after 27 hours. Conclusions: Protective Acute Respiratory Distress Syndrome Network strategy did not attenuate global pulmonary inflammation during the first 27 hours after severe lung insult. The strategy led to a concentration of inflammatory activity in the upper lung regions and in the poorly aerated lung regions. The present findings suggest that the poorly aerated lung tissue is an important target of the perpetuation of the inflammatory process occurring during ventilation according to the Acute Respiratory Distress Syndrome Network strategy.

  • 12.
    Borges, João Batista
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Eduardo, Costa LV
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet.
    Lucchetta, Luca
    Widström, Charles
    Maripuu, Enn
    Suarez-Sipmann, Fernando
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet.
    Larsson, Anders
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Marcelo, Amato
    Hedenstierna, Göran
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Lung inflammation persists after 27 hours of protective ARDSNet strategy and concentrated in the nondependent lung.Manuskript (preprint) (Övrigt vetenskapligt)
  • 13. Hastbacka, Johanna
    et al.
    Fredén, Filip
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Hult, Maarit
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Wilkman, Erika
    Vuola, Jyrki
    Sorsa, Timo
    Tervahartiala, Taina
    Huss, Fredrik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Plastikkirurgi.
    Matrix Metalloproteinases-8 and-9 and Tissue Inhibitor of Metalloproteinase-1 in Burn Patients. A Prospective Observational Study2015Ingår i: PLOS ONE, E-ISSN 1932-6203, Vol. 10, nr 5, artikel-id e0125918Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Introduction Matrix metalloproteinases (MMPs) -8 and -9 are released from neutrophils in acute inflammation and may contribute to permeability changes in burn injury. In retrospective studies on sepsis, levels of MMP-8, MMP-9, and tissue inhibitor of metalloproteinase-1 (TIMP-1) differed from those of healthy controls, and TIMP-1 showed an association with outcome. Our objective was to investigate the relationship between these proteins and disease severity and outcome in burn patients. Methods In this prospective, observational, two-center study, we collected plasma samples from admission to day 21 post-burn, and burn blister fluid samples on admission. We compared MMP-8, -9, and TIMP-1 levels between TBSA<20% (N = 19) and TBSA>20% (N = 30) injured patients and healthy controls, and between 90-day survivors and non-survivors. MMP-8, -9, and TIMP-1 levels at 24-48 hours from injury, their maximal levels, and their time-adjusted means were compared between groups. Correlations with clinical parameters and the extent of burn were analyzed. MMP-8, -9, and TIMP-1 levels in burn blister fluids were also studied. Results Plasma MMP-8 and -9 were higher in patients than in healthy controls (P<0.001 and P = 0.016), but only MMP-8 differed between the TBSA<20% and TBSA>20% groups. MMP-8 and -9 were not associated with clinical severity or outcome measures. TIMP-1 differed significantly between patients and controls (P<0.001) and between TBSA<20% and TBSA>20% groups (P<0.002). TIMP-1 was associated with 90-day mortality and correlated with the extent of injury and clinical measures of disease severity. TIMP-1 may serve as a new biomarker in outcome prognostication of burn patients.

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  • 14.
    Larsson, Anders
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk kemi. Department of Medical Sciences, Clinical Chemistry, University Hospital, Uppsala, Sweden.
    Tydén, Jonas
    Department of Surgical and Perioperative Sciences, Anaesthesiology and Critical Care Medicine (Östersund), Umeå University, Umeå, Sweden..
    Johansson, Joakim
    Department of Surgical and Perioperative Sciences, Anaesthesiology and Critical Care Medicine (Östersund), Umeå University, Umeå, Sweden..
    Lipcsey, Miklós
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Kultima, Kim
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk kemi. Department of Medical Sciences, Clinical Chemistry, University Hospital, Uppsala, Sweden.
    Mandic-Havelka, Aleksandra
    Department of Molecular Medicineand Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
    Calprotectin is superior to procalcitonin as a sepsis marker and predictor of 30-day mortality in intensive care patients2020Ingår i: Scandinavian Journal of Clinical and Laboratory Investigation, ISSN 0036-5513, E-ISSN 1502-7686, Vol. 80, nr 2, s. 156-161Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Sepsis is the most frequent cause of death in the intensive care unit (ICU). A rapid and correct diagnosis and initiation of therapy is crucial for improving patient outcomes. The aim of this study was to compare the performance of calprotectin with the more widely used sepsis biomarker procalcitonin (PCT) in ICU patients. The performance of calprotectin and PCT as sepsis and prognostic markers for 30-d mortality was compared in a prospective, observational study in an eight-bed ICU. We investigated concentrations of the biomarkers in plasma collected at admission from all ICU patients admitted during a year (2012-2013, n = 271) together with simplified acute physiology 3 scores (SAPS3) and sequential organ failure assessment (SOFA) scores. The receiver operating characteristic (ROC) analysis showed a higher area under the curve (AUC) value for calprotectin (0.79) than for PCT (0.49) when used as a sepsis marker. The calprotectin concentrations at admission were higher in non-survivors than in survivors at day 30. In our study, calprotectin was superior to PCT for distinguishing between ICU patients with sepsis and non-sepsis patients. Calprotectin also had higher predictive ability regarding 30-d mortality.

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  • 15.
    Lattuada, Marco
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Maripuu, Enn
    Department of Medical Physics, University Hospital, Uppsala, Sweden.
    Hedenstierna, Göran
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Mechanical ventilation worsens abdominal edema and inflammation in porcine endotoxemia2013Ingår i: Critical Care, ISSN 1364-8535, E-ISSN 1466-609X, Vol. 17, nr 3, s. R126-Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    INTRODUCTION:

    We hypothesized that mechanical ventilation per se increases abdominal edema and inflammation in sepsis and tested this in experimental endotoxemia.

    METHODS:

    Thirty anesthetized piglets were allocated to one of five groups: healthy control pigs breathing spontaneously with continuous positive pressure of 5 cm H2O or mechanically ventilated with positive end-expiratory pressure (PEEP) of 5 cm H2O, and endotoxemic piglets during mechanical ventilation for 2.5 hours and then continued on mechanical ventilation with PEEP of either 5 or 15 cm H2O or switched to spontaneous breathing with continuous positive pressure of 5 cm H2O for another 2.5 hours. Abdominal edema formation was estimated by isotope technique and inflammatory markers were measured in liver, intestine, lung and plasma.

    RESULTS:

    In the healthy controls, 5 hours of spontaneous breathing did not increase abdominal fluid whereas mechanical ventilation did (Normalized Index increased from 1.0 to 1.6;1-3.3 (median and range, p<0.05)). In endotoxemic animals, Normalized Index increased almost six-fold after 5 hours of mechanical ventilation (5.9;4.9-6.9, p<0.05) with two-fold increase from 2.5 to 5 hours whether PEEP was 5 or 15, but only by 40% with spontaneous breathing (p<0.05 vs PEEP of 5 or 15 cm H2O). Tumor Necrosis Factor alpha (TNF-alpha) and interleukin (IL)-6 in intestine and liver were 2-3 times higher with mechanical ventilation than during spontaneous breathing (p<0.05) but similar in plasma and lung. Abdominal edema formation and TNF-alpha in intestine correlated inversely with abdominal perfusion pressure.

    CONCLUSIONS:

    Mechanical ventilation with PEEP increases abdominal edema and inflammation in intestine and liver in experimental endotoxemia by increasing systemic capillary leakage and impeding abdominal lymph drainage.

  • 16.
    Lipcsey, Miklós
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård, Hedenstiernalaboratoriet.
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Sirén, Rebecca
    Department of Medicine, Danderyd Hospital, 18288 Stockholm, Sweden..
    Larsson, Anders
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk kemi.
    Huss, Fredrik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Plastikkirurgi. Burn Center, Department of Plastic and Maxillofacial Surgery, Uppsala University Hospital, 75185 Uppsala, Sweden..
    Pravda, Jay
    Inflammatory Disease Research Centre, Therashock LLC, Palm Beach Gardens, FL 33410, USA.
    Furebring, Mia
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Infektionssjukdomar.
    Sjölin, Jan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Infektionssjukdomar.
    Janols, Helena
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Infektionssjukdomar.
    Urine Hydrogen Peroxide Levels and Their Relation to Outcome in Patients with Sepsis, Septic Shock, and Major Burn Injury2022Ingår i: Biomedicines, E-ISSN 2227-9059, Vol. 10, nr 4, artikel-id 848Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Hydrogen peroxide (H2O2) and oxidative stress have been suggested as possible instigators of both the systemic inflammatory response and the increased vascular permeability associated with sepsis and septic shock. We measured H2O2 concentrations in the urine of 82 patients with severe infections, such as sepsis, septic shock, and infections not fulfilling sepsis-3 criteria, in patients with major burn injury with associated systemic inflammation, and healthy subjects. The mean concentrations of H2O2 were found to be lower in patients with severe infections compared to burn injury patients and healthy subjects. Patients with acute kidney injury (AKI), vs. those without AKI, in all diagnostic groups displayed higher concentrations of urine H2O2 (p &lt; 0.001). Likewise, urine concentrations of H2O2 were higher in non-survivors as compared to survivors (p &lt; 0.001) at day 28 in all diagnostic groups, as well as in patients with severe infections and burn injury (p &lt; 0.001 for both). In this cohort, increased H2O2 in urine is thus associated with mortality in patients with sepsis and septic shock as well as in patients with burn injury.

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  • 17.
    Molnar, Maria
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Larsson, Anders
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Biokemisk struktur och funktion.
    Wiklund, Lars
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Lennmyr, Fredrik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Hyperglycaemia increases S100β after short experimental cardiac arrest2014Ingår i: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 58, nr 1, s. 106-113Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    BACKGROUND:

    Hyperglycaemia is associated with aggravated ischaemic brain injury. The main objective of this study was to investigate the effects on cerebral perfusion of 5 min of cardiac arrest during hyperglycaemia and normoglycaemia.

    METHODS:

    Twenty triple-breed pigs (weight: 22-29 kg) were randomised and clamped at blood glucose levels of 8.5-10 mM [high (H)] or 4-5.5 mM [normal (N)] and thereafter subjected to alternating current-induced 5 min-cardiac arrest followed by 8 min of cardiopulmonary resuscitation and direct current shock to restore spontaneous circulation.

    RESULTS:

    Haemodynamics, laser Doppler measurements and regional venous oxygen saturation (HbO2 ) were monitored, and biochemical markers in blood [S100β, interleukin (IL)-6 and tumour necrosis factor (TNF)] quantified throughout an observation period of 3 h. The haemodynamics and physiological measurements were similar in the two groups. S100β increased over the experiment in the H compared with the N group (P < 0.05). IL-6 and TNF levels increased across the experiment, but no differences were seen between the groups.

    CONCLUSIONS:

    The enhanced S100β response is compatible with increased cerebral injury by hyperglycaemic compared with normoglycaemic 5 min of cardiac arrest and resuscitation. The inflammatory cytokines were similar between groups.

  • 18.
    Nilsson, Manja
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Hambraeus-Jonzon, Kristina
    Karolinska universitetssjukhus.
    Alving, Kjell
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kvinnors och barns hälsa, Pediatrik.
    Wiklund, Peter
    Karolinska universitetssjukhus.
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet.
    Fredén, Filip
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Distant effects of nitric oxide inhalation in lavage induced lung injury in anaesthetised pigs2013Ingår i: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 57, nr 3, s. 326-333Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background Inhalation of nitric oxide (INO) exerts both local and distanteffects. INO in healthy pigs causes down-regulation of endogenous nitric oxide(NO) production and vasoconstriction in lung regions not reached by INO, especially in hypoxic regions, which augments hypoxic pulmonary vasoconstriction. In contrast, in pigs with endotoxemia-induced lung injury, INO causes increased NO production in lung regions not reached by INO. The aim ofthis study was to investigate whether INO exerts distant effects in surfactant-depleted lungs. Methods Twelve pigs were anaesthetised, and the left lower lobe (LLL) was separately ventilated. Lavage injury was induced in all lung regions, except the LLL. In six pigs, 40 ppm INO was given to the LLL (INO group), and theeffects on endogenous NO production and blood flow in the lavage-injured lungregions were studied. Six pigs served as a control group. NO concentration inexhaled air (ENO), NO synthase (NOS) activity and cyclic guanosine monophosphate (cGMP) in lung tissue, and regional pulmonary blood flow were measured. Results The calcium (Ca2+)-dependent NOS activity was lower (P<0.05) in the lavage-injured lung regions in the INO group than in the control group. There were no measurable differences between the groups for Ca2+-independent NOS activity, cGMP, ENO, or regional pulmonary blood flow. Conclusions Regional INO did not increase endogenous NO production in lavage-injured lung regions not directly reached by INO, but instead down-regulated the constitutive calcium-dependent nitric oxide synthase activity, indicating that NO may inhibit its own synthesis.

  • 19.
    Norin, Ulrika
    et al.
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden..
    Rintisch, Carola
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden.;Lund Univ, Med Inflammat Res, Lund, Sweden.;Max Delbruck Ctr Mol Med MDC, Cardiovasc & Metab Sci, Berlin, Germany..
    Meng, Liesu
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden.;Xi An Jiao Tong Univ, Affiliated Hosp 2, Xian 710061, Shaanxi, Peoples R China.;Xi An Jiao Tong Univ, Hlth Sci Ctr, Dept Biochem & Mol Biol, Sch Basic Med Sci, Xian 710061, Shaanxi, Peoples R China..
    Forster, Florian
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden..
    Ekman, Diana
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden.;Stockholm Univ, Dept Biochem & Biophys, Sci Life Lab, Natl Bioinformat Infrastruct Sweden, Stockholm, Sweden..
    Tuncel, Jonatan
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden..
    Klocke, Katrin
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden..
    Bäcklund, Johan
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden..
    Yang, Min
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden..
    Bonner, Michael Y.
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden..
    Lahore, Gonzalo Fernandez
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden..
    James, Jaime
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden..
    Shchetynsky, Klementy
    Karolinska Inst, Rheumatol Unit, Dept Med, Stockholm, Sweden.;Karolinska Univ Hosp, Stockholm, Sweden..
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi. Univ Gothenburg, Sahlgrenska Acad, Inst Med, Dept Rheumatol & Inflammat Res, Gothenburg, Sweden.
    Gjertsson, Inger
    Univ Gothenburg, Sahlgrenska Acad, Inst Med, Dept Rheumatol & Inflammat Res, Gothenburg, Sweden..
    Hubner, Norbert
    Max Delbruck Ctr Mol Med MDC, Cardiovasc & Metab Sci, Berlin, Germany.;Charite Univ Med Berlin, Berlin, Germany..
    Bäckdahl, Liselotte
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden..
    Holmdahl, Rikard
    Karolinska Inst, Dept Med Biochem & Biophys, Med Inflammat Res, Stockholm, Sweden.;Xi An Jiao Tong Univ, Affiliated Hosp 2, Xian 710061, Shaanxi, Peoples R China.;Xi An Jiao Tong Univ, Hlth Sci Ctr, Dept Biochem & Mol Biol, Sch Basic Med Sci, Xian 710061, Shaanxi, Peoples R China..
    Endophilin A2 deficiency protects rodents from autoimmune arthritis by modulating T cell activation2021Ingår i: Nature Communications, E-ISSN 2041-1723, Vol. 12, nr 1, artikel-id 610Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The introduction of the CTLA-4 recombinant fusion protein has demonstrated therapeutic effects by selectively modulating T-cell activation in rheumatoid arthritis. Here we show, using a forward genetic approach, that a mutation in the SH3gl1 gene encoding the endocytic protein Endophilin A2 is associated with the development of arthritis in rodents. Defective expression of SH3gl1 affects T cell effector functions and alters the activation threshold of autoreactive T cells, thereby leading to complete protection from chronic autoimmune inflammatory disease in both mice and rats. We further show that SH3GL1 regulates human T cell signaling and T cell receptor internalization, and its expression is upregulated in rheumatoid arthritis patients. Collectively our data identify SH3GL1 as a key regulator of T cell activation, and as a potential target for treatment of autoimmune diseases.

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  • 20.
    Tovedal, Thomas
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Myrdal, Gunnar
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Thoraxkirurgi.
    Jonsson, Ove
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Hedenstiernalaboratoriet.
    Zemgulis, Vitas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Thoraxkirurgi.
    Thelin, Stefan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Thoraxkirurgi.
    Lennmyr, Fredrik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Experimental treatment of superior venous congestion during cardiopulmonary bypass2013Ingår i: European Journal of Cardio-Thoracic Surgery, ISSN 1010-7940, E-ISSN 1873-734X, Vol. 44, nr 3, s. E239-E244Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    OBJECTIVES:

    Superior venous outflow obstruction affects cerebral perfusion negatively by reducing cerebral perfusion pressure (CPP). We present a randomized study designed to compare two alternative strategies to preserve the CPP during superior vena cava (SVC) congestion and cardiopulmonary bypass (CPB).

    METHODS:

    Fourteen pigs on bi-caval CPB were subjected to 75% occlusion of the SVC flow. CPP was restored either by vasopressor treatment (VP, n = 7) or by partial relief (PR) of the congestion (n = 7). The cerebral effects of the interventions were studied for 60 min with intracranial pressure (ICP) monitoring, cerebral blood flow measurement, the near-infrared light spectroscopy tissue oxygen saturation index (StO2), arterial and venous blood gas analyses and serial measurements of the glial cell damage marker protein S100β.

    RESULTS:

    Both strategies restored the CPP to baseline levels and no signs of severe ischaemia were observed. In the PR group, the venous and ICPs were normalized in response to the intervention, while in the VP group those parameters remained elevated throughout the experiment. The haemoglobin oxygen saturation in the sagittal sinus (SsagO2) was increased by both VP and PR, while significant improvement in the StO2 was observed only in the PR group. The S100β concentrations were similar in the two groups.

    CONCLUSIONS:

    Experimental SVC obstruction during CPB may reduce the CPP, resulting in impaired cerebral perfusion. Both vasopressor treatment and improved venous drainage can, in the short term, individually restore the CPP during these circumstances.

  • 21.
    Trachsel, Sebastien
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Hambraeus-Jonzon, Kristina
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Martijn, Cecile
    Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper.
    Chen, Luni
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper.
    Hedenstierna, Göran
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper.
    No redistribution of lung blood flow by inhaled nitric oxide in endotoxemic piglets pretreated with an endothelin receptor antagonist2015Ingår i: Journal of applied physiology, ISSN 8750-7587, E-ISSN 1522-1601, Vol. 118, nr 6, s. 768-775Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Inhaled nitric oxide (INO) improves ventilation-perfusion matching and alleviates pulmonary hypertension in patients with acute respiratory distress syndrome. However, outcome has not yet been shown to improve, and non-response is common. A better understanding of the mechanisms by which INO acts, may guide in improving treatment with INO in patients with severe respiratory failure. We hypothesized that INO may act not only by vasodilation in ventilated lung regions, but also by causing vasoconstriction via endothelin (ET-1) in atelectatic, non-ventilated lung regions. This was studied in 30 anesthetized, mechanically ventilated piglets. The fall in oxygenation and rise in pulmonary artery pressure during a sepsis-like condition (infusion of endotoxin) were blunted by INO 40ppm. Endotoxin infusion increased serum ET-1, and INO almost doubled the ratio between mRNA expression of endothelin receptor A (mediating vasoconstriction) and B (mediating vasodilation and clearance of ET-1) (ET-A/ET-B) in atelectatic lung regions. INO caused a shift in blood flow away from atelectatic lung regions in the endotoxemic piglets, but not during ET receptor antagonism. We conclude that INO in short term experiments, in addition to causing selective pulmonary vasodilation in ventilated lung regions, also increases the ET-A/ET-B mRNA expression ratio in lung tissue. This might augment the vasoconstriction in atelectatic lung regions, enhancing the redistribution of pulmonary blood flow to ventilated lung regions which are reached by INO. Such vasoconstriction may be an important additional factor explaining the effect of INO.

  • 22.
    Willebrand, Mimmie
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Psykiatri, Akademiska sjukhuset.
    Sveen, Josefin
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Psykiatri, Akademiska sjukhuset.
    Ramklint, Mia
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Psykiatri, Akademiska sjukhuset.
    Bergquist, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk fysiologi.
    Huss, Fredrik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Plastikkirurgi.
    Sjöberg, Folke
    Psychological problems in children with burns: Parents' reports on the Strengths and Difficulties Questionnaire2011Ingår i: Burns, ISSN 0305-4179, E-ISSN 1879-1409, Vol. 37, nr 8, s. 1309-1316Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Burns may have a devastating effect on psychological health among children, although previous studies report difficulties as well as positive findings. The aims were to describe the rate of psychological problems in children with burns using a standardised instrument and to explore statistical predictors of these problems. Parents (n = 94) of children aged 3-18 years who sustained burns 0.3-9.0 years previously answered the Strengths and Difficulties Questionnaire (SDQ) covering Emotional symptoms, Conduct problems, Hyperactivity/Inattention, Peer relationship problems, Prosocial behaviour, and a Total difficulties score. Questions regarding parental psychological health and family situation were also included. The results for three of the SDQ subscales were close to the norm (10%) regarding the rate of cases where clinical problems were indicated, while the rate of cases indicated for Conduct, Peer problems and Total difficulties was 18-20%. Statistical predictors of the SDQ subscales were mainly parents' psychological symptoms, father's education, and changes in living arrangements. Visible scars were relevant for the Total difficulties score and Hyperactivity/Inattention. In summary, a slightly larger proportion of children with burns had psychological problems than is the case among children in general, and family variables exerted the most influence on parental reports of children's psychological problems.

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