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

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

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.

Stender, Steen (author)
Szecsi, Pal B. (author)
Pedersen, Steen B. (author)
Basu, SamarUppsala universitet,Oxidativ stress och inflammation(Swepub:uu)samabasu (author)
Hellgren, Lars I. (author)
Newman, John W. (author)
Larsen, Thomas M. (author)
Haugaard, Steen B. (author)
Astrup, Arne (author)
Uppsala universitetOxidativ stress och inflammation (creator_code:org_t)

By the author/editor: Bendsen, Nathali ...; Stender, Steen; Szecsi, Pal B.; Pedersen, Steen ...; Basu, Samar; Hellgren, Lars I ...; show more...; Newman, John W.; Larsen, Thomas M ...; Haugaard, Steen ...; Astrup, Arne; show less...

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