Sex-Specific Bioaccumulation, Maternal Transfer, and Tissue Distribution of Legacy and Emerging Per- and Polyfluoroalkyl Substances in Snakes (Enhydris chinensis) and the Impact of Pregnancy

Ye Mei-Xia; Luo Xiao-Jun; Liu YuZhu Chu-HongFeng Qun-JieZeng Yan-HongMai Bi-Xian

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Sex-Specific Bioaccumulation, Maternal Transfer, and Tissue Distribution of Legacy and Emerging Per- and Polyfluoroalkyl Substances in Snakes (Enhydris chinensis) and the Impact of Pregnancy

机译：Sex-Specific Bioaccumulation, Maternal Transfer, and Tissue Distribution of Legacy and Emerging Per- and Polyfluoroalkyl Substances in Snakes (Enhydris chinensis) and the Impact of Pregnancy

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The effects of sex and pregnancy on the bioaccumulation and tissue distribution of legacy and emerging per-and polyfluoroalkyl substances (PFASs) in Chinese water snakes were investigated. The bioaccumulation factor of PFASs showed a positive correlation with their protein-water partition coefficients (log KPW), and steric hindrance effects were observed when the molecular volume was > 357 angstrom 3. PFAS levels in females were significantly lower than those in males. The chemical composition of pregnant females was significantly different from that of non-pregnant females and males. The maternal transfer efficiencies of perfluorooctane sulfonic acid were higher than those of other PFASs, and a positive correlation between the maternal transfer potential and log KPW was observed for other PFASs. Tissues with high phospholipid content exhibited higher concentrations of n-ary sumation PFASs. Numerous physiological changes occurred in maternal organ systems during pregnancy, leading to the re-distribution of chemicals among different tissues. The change in tissue distribution of PFASs that are easily and not-so-easily maternally transferred was in the opposite direction. The extent of compound transfer from the liver to the egg determined tissue re-distribution during pregnancy.

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《Environmental Science & Technology: ES&T》 |2023年第11期|4481-4491|共11页
作者
Ye Mei-Xia; Luo Xiao-Jun; Liu YuZhu Chu-HongFeng Qun-JieZeng Yan-HongMai Bi-Xian;
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作者单位

Jiangxi Acad Sci;

Chinese Acad Sci;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
PFASs; snake; pregnancy; sex; bioaccumulation; maternal transfer; tissue distribution; PERFLUOROALKYL SUBSTANCES; PERFLUORINATED COMPOUNDS; ACIDS; PFASS; ACCUMULATION; SULFONATE; PFOS; LAKE; CONTAMINANTS; ORGANISMS;

Sex-Specific Bioaccumulation, Maternal Transfer, and Tissue Distribution of Legacy and Emerging Per- and Polyfluoroalkyl Substances in Snakes (Enhydris chinensis) and the Impact of Pregnancy

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