The effect of n-3 long chain fatty acids supplementation on plasma peroxisome proliferator activated receptor gamma and thyroid hormones in obesity
Background: Peroxisome proliferator-activated receptor gamma (PPAR γ) is a transcription factor, which is abundantly expressed in adipose tissue and has a direct link to adiposity. It seems that long-chain polyunsaturated fatty acids (LC-PUFAs) can regulate PPAR γ expression. The purpose of this stu...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wolters Kluwer Medknow Publications
2012-01-01
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| Series: | Journal of Research in Medical Sciences |
| Subjects: | |
| Online Access: | http://www.jmsjournal.net/article.asp?issn=1735-1995;year=2012;volume=17;issue=10;spage=942;epage=946;aulast=Taraghijou |
| Summary: | Background: Peroxisome proliferator-activated receptor gamma (PPAR γ) is a transcription factor, which is abundantly expressed in adipose tissue and has a direct link to adiposity. It seems that long-chain polyunsaturated fatty acids (LC-PUFAs) can regulate PPAR γ expression. The purpose of this study was to investigate the effects of n-3LC PUFA supplementation on plasma levels of PPAR γ and thyroid hormones in obesity. Materials and Methods: In a randomized double-blind controlled trial, 66 subjects with obesity were assigned to 2 groups. Participants in intervention group consumed omega3 capsules contained 1000 mg n-3 fatty acids (180 mg of eicosapentaenoic acid [EPA] and 120 mg of docosahexaenoic acid [DHA]) and placebo group consumed placebo capsules contained paraffin twice a day for 4 wk. Fasting blood samples and weight measurements were collected at the baseline and at the end of the trial. Plasma PPAR γ and thyroid hormones were measured by ELISA. Data were analyzed using a repeated measure model-two factor for comparing two groups in two times. Results: No significant changes were observed in PPAR γ levels between and within the groups after supplementation (P>0.05). N-3LC PUFA supplementation significantly increased T4 levels after 4 wk (P<0.05) but T3 and TSH did not change significantly. Conclusion: Our study showed that n-3LC PUFAs supplementation increased T4 levels. However, no significant changes in T3, TSH and PPAR γ plasma levels were observed in obese adults. |
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| ISSN: | 1735-1995 1735-7136 |