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Ecotoxicol Environ Saf. 2018 Oct;161:459-466. doi: 10.1016/j.ecoenv.2018.06.001. Epub 2018 Jun 14.

Effects of Bisphenol S on hypothalamic neuropeptides regulating feeding behavior and apelin/APJ system in mice.

Author information

1
University of Monastir, High Institute of Biotechnology of Monastir, Laboratory of Bioresources: Integrative Biology and Valorisation BIOLIVAL, Tunisia. Electronic address: raja.rezg@laposte.net.
2
Institut National de la Santé et de la Recherche Médicale (INSERM), U1220, Université Paul Sabatier, UPS, Institut de Recherche en Santé Digestive et Nutrition (IRSD), CHU Purpan, Place du Docteur Baylac, CS 60039, 31024 Toulouse Cedex 3; NeuroMicrobiota, European Associated Laboratory (EAL) INSERM/UCL, France.
3
University of Gabes, Faculty of Sciences of Gabes, Laboratoire de Biodiversité et valorisation des bioressources des zones arides, UR 11ES86, Tunisia.

Abstract

Since 2010, Bisphenol A (BPA), an endocrine disruptor has been restricted and replaced by analogues like Bisphenol S (BPS). However, little is known about BPS effects and growing concern have suspected the "BPA-free" Label. Several recent studies suggest that BPS is associated with increased risk of diabetes and obesity. However, the underlying mechanisms remain unidentified. The current study investigates investigate BPS effects on hypothalamic neuropeptides regulating feeding behavior, either orexigenic or anorexigenic in Swiss Albino mice. We also studied the effect of BPS on the apelinergic system (apelin/apelin receptor (APJ)) as an original physiological system with pleiotropic actions. Bisphenol S at 25, 50, 100 µg/kg was administered to mice in water drink for 10 weeks started after weaning. Our results showed that BPS exposure alters orexigenic hypothalamic neuropeptide (AgRP) regulating feeding behavior but not anorexigenic neuropeptides (POMC, CART). Such orexigenic alterations may underlay appetite disorders leading to a concomitant food intake and body weight gain increase. In addition, data show that BPS affects the hypothalamic apelinergic system. We found a significant decrease in APJ mRNA but not in apelin expression. Based on hypothalamic APJ distribution, we suggested a potent specific physiological alteration of this receptor in mediating neuroendocrine responses in hypothalamus. Thus, our findings provide that BPS exposure could contribute to the development of obesity and metabolic disorders.

KEYWORDS:

Bisphenol S; Food intake; Hypothalamus; Neurotoxicity; Orexigenic/anorexigenic neuropeptides

PMID:
29909315
DOI:
10.1016/j.ecoenv.2018.06.001
[Indexed for MEDLINE]

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