News Release

空气污染与器官发育

Peer-Reviewed Publication

Proceedings of the National Academy of Sciences

offspring of the clean air versus polluted groups at different increments of postnatal days

image: Relative changes in body weights (BW), relative organ weights, and plasma metabolites including nonesterified fatty acids (NEFA) in offspring of the clean air versus polluted groups at different increments of postnatal days (PND); small intestine (SI), lungs (LG), kidney (KY), thymus (TS), brain (BN), heart (HT), spleen (SN), intestine (IE). view more 

Credit: Image courtesy of Yixin Li.

一项研究发现了大鼠胎儿期暴露于精细颗粒物的不良效应,包括妊娠并发症与代谢效应。空气污染是一个全世界范围的公共卫生担忧 此前关于怀孕大鼠暴露于精细颗粒物的研究发现了后代的代谢与免疫系统被削弱,但是空气污染对子宫内器官形成的效应尚不明确。Guoyao Wu、Mario J. Molina、 Renyi Zhang及其同事让怀孕大鼠暴露于高水平的超精细硫酸铵气溶胶之中,然后追踪了幼崽的发育。与母亲没有暴露于空气污染中的大鼠相比,在怀孕期间,空气污染减少了胎儿存活率,并且缩短了妊娠期,导致了出生时更小的体重、更小的大脑、心脏、肠道和其他器官 暴露于空气污染的小鼠的某些器官变大了,这包括脾、胸腺和肾,而且暴露于污染的小鼠表现出了脂与葡萄糖代谢受到扰动,以及成年期主动脉松弛的减少。这组作者说,这些发现提示,需要减少胎儿期颗粒物暴露的策略。

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