目的探讨围生期暴露双酚A(bisphen01A,BPA)对青春期雌性子代大鼠体重、糖代谢及细胞炎症因子的影响。方法将21只清洁级SD妊娠大鼠分为3组,分别为对照(含1%无水乙醇的水)组和低(1μg/ml)、高(10μg/ml)浓度BPA暴露组,每组7只。从妊娠第6天至哺乳期(出生后20d),母鼠采用自由饮水方式进行染毒;断乳后,雌性仔鼠采用自由饮水(不含BPA)方式继续喂养30d。测定雌性仔鼠体重、空腹血糖、胰岛素水平及血清肿瘤坏死因子-α(tumornecrosisfactor-α,TNF-α)和白介素6(interleukin-6,IL-6)水平,并计算胰岛素抵抗指数。结果各浓度BPA暴露组雌性仔鼠体重、空腹血糖、血清胰岛素水平和胰岛素抵抗指数、TNF-α、IL-6水平均明显高于对照组,差异有统计学意义(P〈0.05,P〈0.01)。结论围生期暴露BPA可引起子代雌性大鼠体重增高和胰岛素抵抗,并可诱发机体炎症反应。
Objective To explore the effects of perinatal exposure to bisphenol A(BPA) on body weight and inflammatory factors in adolescent female offspring rats. Methods A total of 21 pregnant Sprague-Dawley rats were randomly divided into three groups, seven rats in each group, the control group (1% of anhydrous alcohol with water),low dose (1 μg/ml) and high dose (10 μg/ml) groups of BPA exposed through drinking water,from gestation day 6 to the end of lactation respectively. Female offspring drank water without BPA for 30 days after weaning. Body weight,fasting serum glucose,insulin,necrosis factor-α (TNF-α) and interleukin-6 (IL-6) levels were determined, and insulin resistance index was calculated in female offspring after postnatal day 50. Results There were significantly higher body weight,serum glucose,insulin,and insulin resistance index,TNF-α and IL-6 levels in BPA-exposed female rats compared with the controls (P〈0.05 or P〈0.01). Conclusion Perinatal exposure to BPA may result in body weight gain and insulin resistance,and induce inflammatory response in female offspring.