含汞中药外用制剂朱红膏对皮肤溃疡模型大鼠肾脏抗氧化能力的影响

目的:研究经大鼠溃疡皮肤反复给予朱红膏对肾脏抗氧化能力的影响,进一步探讨朱红膏中汞经皮吸收作用于肾的机制。方法:将80只SD大鼠随机分8组:朱红膏A,B,C,D,E(含原药材1.219,0.609,0.305,0.152,0.076 g.kg-1)5个剂量组、基质组(凡士林)、溃疡模型组及皮肤破损组。连续给药14 d,测定尿液NAG,RBP水平及肾组织中T-AOC,SOD,GSH-PX,GSH水平。结果:与溃疡模型组比较,朱红膏A组NAG水平升高,A,B,C,D组RBP含量均明显升高;朱红膏A,B,C组T-AOC显著升高;朱红膏E组T-SOD活力升高;朱红膏A组T-SOD活力显著降低;朱红膏A,B,C组GSH-PX活力均明显升高;随剂量的增加,朱红膏各给药组GSH含量均明显升高。结论:一定剂量朱红膏外用,可以调动机体抗氧化防御系统,提高抗氧化能力,随着剂量增加,则对某些抗氧化物质活性出现明显的抑制作用。

Effect of Zhuhong ointment on renal antioxidant capability in skin ulcer model rats

Objective: To study the effect of repeated administration of Zhuhong ointment on renal antioxidant capability of ulcerous skin in rats, in order to further discuss the mechanism of mercury contained in Zhuhong ointment on the antioxidant capability of kidney in skin ulcer rats. Method: Eighty SD rats were randomly divided into eight groups: Zhuhong ointment A, B, C, D, E (1.219, 0.609, 0.305, 0.152, 0.76 g·kg^-1) groups, the vaseline group, the ulcer model group and the impairment control group. The levels of NAG and RBP of toxicity for early kidney tubular injury and T-AOC, SOD, GSH-PX and GSH in kidney were determined after consecutive administration for 14 days. Result: Compared with ulcer model group, the levels of RBP in groups A, B, C and D increased, while the levels of NAG increased only in the group A. The level of T-AOC increased in groups A, B and C. The level of T-SOD increased in the group E, while it dropped down greatly in the group A. The level of GSH-PX increased in groups A, B and C. The content of GSH increased in every dose groups. Conclusion: Antioxidant capacity in rats can be increased in a reasonable dose of Zhuhong ointment, but some antioxidant activity can be notably inhibited by with the increase of dose.