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产前暴露于双酚 A:对雄性和雌性大鼠胎儿肝脏脂质代谢的影响。

Prenatal Exposure to BPA: The Effects on Hepatic Lipid Metabolism in Male and Female Rat Fetuses.

机构信息

Department of Science, University Roma Tre, Viale Marconi 446, 00146 Rome, Italy.

Department of Biosciences and Territory, University of Molise, Contrada Fonte Lappone, 86090 Pesche, Italy.

出版信息

Nutrients. 2021 Jun 8;13(6):1970. doi: 10.3390/nu13061970.

Abstract

Bisphenol A (BPA) is an organic chemical compound widely used for manufacturing plastics. BPA exposure originates principally from the diet, but it can also originate from dermal contact. In over 90% of individuals, including pregnant women, BPA is detectable in several body fluids. The effects of this exposure on the fetus are under active investigation in several research laboratories. The aim of our work was to study the impact of prenatal exposure to BPA in the liver of rat fetuses from a sex-dependent point of view. We particularly investigated the effects of prenatal BPA exposure on hepatic lipids because of their crucial role, not only for the liver, but also for the whole-body functions. Our results demonstrate that the liver of rat fetuses, in utero exposed to a very low dose of BPA (2.5 µg/kg/day), displays significant modulations with regard to proteins involved in cholesterol and fatty acid biosynthesis and trafficking. Moreover, an impact on inflammatory process has been observed. All these effects are dependent on sex, being observable only in female rat fetuses. In conclusion, this work demonstrates that maternal exposure to BPA compromises hepatic lipid metabolism in female offspring, and it also reveals the perspective impact of BPA on human health at doses currently considered safe.

摘要

双酚 A(BPA)是一种广泛用于制造塑料的有机化学化合物。BPA 的暴露主要来自饮食,但也可能来自皮肤接触。在包括孕妇在内的 90%以上的人群中,几种体液中都能检测到 BPA。这一暴露对胎儿的影响正在几个研究实验室中进行积极研究。我们的工作目的是从性别依赖的角度研究产前暴露于 BPA 对大鼠胎儿肝脏的影响。我们特别研究了产前 BPA 暴露对肝脏脂质的影响,因为它们不仅对肝脏,而且对全身功能都至关重要。我们的研究结果表明,在宫内暴露于极低剂量 BPA(2.5μg/kg/天)的大鼠胎儿肝脏中,与胆固醇和脂肪酸生物合成和转运有关的蛋白质发生了显著的调节。此外,还观察到了对炎症过程的影响。所有这些影响都依赖于性别,仅在雌性大鼠胎儿中可见。总之,这项工作表明,母体暴露于 BPA 会损害雌性后代的肝脏脂质代谢,也揭示了目前认为安全剂量的 BPA 对人类健康的潜在影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eb8/8227982/be30c5747406/nutrients-13-01970-g001.jpg

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