Effect of industrially produced trans fat on markers of systemic inflammation: evidence from a randomized trial in women.

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 biomarkers 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) α 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, TNFα, and adiponectin as well as ceramide content were not affected by IP-TFA, nor was urinary 8-iso-prostaglandin-F(2α). In conclusion, this dietary trial indicates that the mechanisms linking dietary IP-TFA to cardiovascular disease may involve activation of the TNFα system.

DOI: 10.1194/jlr.M014738
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@article{Bendsen2011EffectOI, title={Effect of industrially produced trans fat on markers of systemic inflammation: evidence from a randomized trial in women.}, author={Nathalie Tommerup Bendsen and Steen Stender and Pal Bela Szecsi and Steen B\onl\okke Pedersen and Samar K Basu and Lars Ingvar Hellgren and John W. Newman and Thomas Meinert Larsen and Steen Bendix Haugaard and Arne Astrup}, journal={Journal of lipid research}, year={2011}, volume={52 10}, pages={1821-8} }