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PLoS One. 2016 May 12;11(5):e0155352. doi: 10.1371/journal.pone.0155352. eCollection 2016.

Environmentally Relevant Dose of Bisphenol A Does Not Affect Lipid Metabolism and Has No Synergetic or Antagonistic Effects on Genistein's Beneficial Roles on Lipid Metabolism.

Author information

1
Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, PR China.
2
Department of Nutrition and Food Hygiene, School of Public Health, Xinxiang Medical University, Xinxiang, 453003, PR China.
3
Department of Clinical Nutrition, Tongji Hospital, Huazhong University of Science & Technology, Wuhan, 430030, PR China.
4
Department of Psychiatry, The Fifth Hospital of Xiamen, Xiamen, 361101, PR China.
5
Department of Nosocomial Infection Management, Central Hospital of Suizhou, Suizhou, 441300, PR China.
6
School of Environmental Science and Public Health, Wenzhou Medical University, Wenzhou, 325000, PR China.
7
Department of Nursing, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, 430030, PR China.
8
MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, PR China.

Abstract

Both bisphenol A (BPA, an endocrine disrupting chemicals) and genistein (a phytoestrogen mainly derived from leguminosae) are able to bind to estrogen receptors, but they are considered to have different effects on metabolic syndrome, surprisingly. We here investigate the effects of an environmentally relevant dose of BPA alone and the combined effects with genistein on lipid metabolism in rats. Eight groups of adult male Wistar rats, fed with either standard chow diet or high-fat diet, were treated with BPA (50μg/kg/day), genistein (10mg/kg/day), and BPA plus genistein for 35 weeks, respectively. Metabolic parameters in serum and liver were determined; the hematoxylin/eosin and oil Red O staining were used to observe liver histologically; gene expressions related to hepatic lipid metabolism were analyzed by Real-time PCR; protein expressions of PPARγ, PPARα and LC3 in liver were analyzed by western blotting. No difference of body weight gain, total energy intake, liver weight/body weight or body fat percentage in both STD- and HFD-fed sub-groups was observed after treatment with BPA, genistein, or BPA plus genistein (P>0.05). Genistein alleviated lipid metabolism disorder and decreased the mRNA and protein expression of PPARγ (P<0.05), and increased the protein expression of LC3II (P<0.05) in liver of HFD-fed rats. However, BPA treatment had no effect on lipid metabolism in rats alone (P>0.05) or combined with genistein. Our findings suggest that long-term environmentally relevant dose of BPA did not affect lipid metabolism, and had no synergetic or antagonistic roles on genistein's beneficial function on hepatic lipid metabolism.

PMID:
27171397
PMCID:
PMC4865196
DOI:
10.1371/journal.pone.0155352
[Indexed for MEDLINE]
Free PMC Article

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