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Sökning: WFRF:(Stender Steen) > Szecsi Pal B.

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1.
  • Bendsen, Nathalie T., et al. (författare)
  • Effect of industrially produced trans fat on markers of systemic inflammation : evidence from a randomized trial in women
  • 2011
  • Ingår i: Journal of Lipid Research. - 0022-2275 .- 1539-7262. ; 52:10, s. 1821-1828
  • Tidskriftsartikel (refereegranskat)abstract
    • Consumption of industrially produced trans fatty acids (IP-TFA) has been positively associated with systemic markers of low-grade inflammation and endothelial dysfunction in cross-sectional studies, but results from intervention studies are inconclusive. Therefore, we conducted a 16 week double-blind parallel intervention study with the objective to examine the effect of IP-TFA intake on bio-markers of inflammation, oxidative stress, and endothelial dysfunction. Fifty-two healthy overweight postmenopausal women (49 completers) were randomly assigned to receive either partially hydrogenated soybean oil (15.7 g/day IP-TFA) or control oil without IP-TFA. After 16 weeks, IP-TFA intake increased baseline-adjusted serum tumor necrosis factor (TNF) alpha by 12% [95% confidence interval (CI): 5-20; P = 0.002] more in the IP-TFA group compared with controls. Plasma soluble TNF receptors 1 and 2 were also increased by IP-TFA [155 pg/ml (CI: 63-247); P < 0.001 and 480 pg/ml (CI: 72-887); P = 0.02, respectively]. Serum C-reactive protein, interleukin (IL) 6 and adiponectin and subcutaneous abdominal adipose tissue mRNA expression of IL6, IL8, TNF alpha, and adiponectin as well as ceramide content were not affected by IP-TFA, nor was urinary 8-iso-prostaglandin-F(2 alpha). In conclusion, this dietary trial indicates that the mechanisms linking dietary IP-TFA to cardiovascular disease may involve activation of the TNF alpha system.
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2.
  • Hedengran, Katrine K., et al. (författare)
  • Environmental tobacco smoke exposure during pregnancy has limited effect on infant birthweight and umbilical vein endothelial nitric oxide synthase
  • 2018
  • Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : Wiley. - 0001-6349. ; 97:11, s. 1309-1316
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: Women who smoke, deliver significantly smaller infants. These infants have reduced levels of the vasodilator endothelial nitric oxide synthase (eNOS) levels in the umbilical vessels, which may reduce fetal growth. Serum cotinine, the degradation product of nicotine, can be used to determine the level of tobacco exposure. Newborns of environmental smokers are suggested to be smaller and shorter in weight, length, and head circumference. eNOS levels have not yet been studied in these infants. We here investigated the existence of a relation between maternal environmental tobacco smoke exposure, eNOS activity, concentration, and birthweight. Material and methods: We included 263 healthy singleton pregnancies categorized into three groups according to measured cotinine levels: 175 nonsmokers, 38 smokers, and 50 environmental smokers. Cotinine was quantified by mass spectrometry with a detection limit of.2 ng/mL; eNOS activity and concentration were measured in endothelial cells (ECs) of the umbilical vein. Results: Infants born to environmental smokers had similar weights to infants born to nonsmokers (47 g heavier, P =.48). Cotinine concentrations were.06/.09/.12 ng/mL (quartiles) in infants born to nonsmokers,.27/.37/.81 ng/mL in infants born to women exposed to environmental tobacco smoke, and 43.0/63.8/108.1 ng/mL in infants born to smokers. The eNOS concentration was 1.65 ±.92 ng/106 ECs (mean ± SD) in nonsmokers and 1.71 ± 1.00 ng/106 ECs in environmental smokers. The eNOS activity was 52.0 ± 20.6 pmol l-citrulline/min/106 ECs in nonsmokers and 48.7 ± 19.8 pmol l-citrulline/min/106 ECs in environmental smokers. Conclusions: Infants born to environmental smokers, as judged by umbilical serum cotinine levels close to.2 ng/mL, are not associated with lower birthweight or reduced eNOS activity, or concentration in the fetal vascular bed.
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