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镉暴露与大鼠胎盘屏障关系研究 被引量:2

Study of the relationship between cadmium exposure and placental barrier of rat
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摘要 目的探讨镉暴露能否通过SD大鼠胎盘屏障。方法雌性SD大鼠12只随机分为3组,每组4只,依次皮下注射去离子水(对照组)、20μg/kg体质量112Cd2+溶液(低剂量组)和40μg/kg体质量112Cd2+溶液(高剂量组),1次/d,连续注射52~55 d,其间在第31天开始与雄性SD大鼠按常规方法交配,孕第20天剖杀母鼠。取母鼠血、脐带血用原子吸收光谱仪测镉水平;用电感耦合等离子体质谱仪测胎鼠脑、肾脏、肝脏和胎盘镉水平。结果低剂量组和高剂量组的胎盘[(2.431±0.311)、(4.954±0.120)mg/kg]、脐血[(1.188±0.419)、(3.143±0.662)μg/L]和肝脏[(0.037±0.003)、(0.084±0.009)mg/kg]镉水平与对照组[(0.002±0.001)mg/kg、(0.114±0.018)μg/L、(0.010±0.003)mg/kg]比较,差异均有统计学意义(P<0.05);低、高剂量组胎鼠脑镉水平与对照组比较,差异无统计学意义(P>0.05)。结论镉可通过胎盘屏障到达胎鼠体内,并在胎盘蓄积。
出处 《中国职业医学》 CAS 北大核心 2012年第3期231-233,共3页 China Occupational Medicine
基金 广东省医学科研课题(B2010023)
关键词 胎盘 胎鼠
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