番茄红素对PFOS致雄性大鼠生殖毒性的影响

目的观察番茄红素对PFOS致雄性大鼠生殖毒性的影响及其可能作用机制。方法SD雄性大鼠30只,随机分为5组,每组6只:溶剂对照组、PFOS染毒组、低、中、高剂量番茄红素(LP)保护组;对照组灌胃CMC-Na溶液,PFOS组和低、中、高剂量LP保护组均进食染毒饲料(32 mg/kg PFOS-K),同时番茄红素各保护组按其设计剂量隔日灌胃LP一次,连续进行3个月剖杀,检测并观察精子活动度、数量及LDH-X、CAT、GSH-Px、SOD酶的活性和MDA的含量变化。结果低、中、高剂量LP大鼠的精子数量较PFOS染毒组增多,分别为14.91、15.44、16.13(×107个/g附睾),精子活动率增强,分别为44.00%、53.68%、58.37%,精子畸形率降低,LDH-X、血清睾酮(T)水平均有不同程度的恢复(P<0.05);低、中、高剂量LP可明显恢复SOD和CAT酶活力,降低MDA含量,与PFOS组比较差异有显著性(P<0.05)。结论10~20 mg/kg LP可保护亚慢性低剂量PFOS所致生殖损伤,抗氧化损伤和调节睾酮分泌是LP保护PFOS致生殖损伤的重要机制。

Effect of Lycopene on PFOS-induced Male Reproductive Toxicity in Rats

Objective To observe the effect of lycopene on the perfluorooctane sulfonate(PFOS)-induced reproductive toxicity in male rats and its possible mechanism. Methods 30 SD male rats were randomly divided into five groups by six: solvent control group,PFOS exposure group,low,middle and high doses of LP protection group;the control group fed with CMC-Na solution,PFOS groups,and low,medium and high doses of LP protection groups are fed with poisoned fodder(32mg/kg PFOS-K),while LP protected groups do gavage accord...