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[The nephrotoxicity in rats caused by Longdan Xiegan decoction]
1Department on Formulaology, Beijing University of Traditional Chinese Medicine, Beijing 100029, China.
Objective:
To observe the renal injury in rats induced by Longdan Xiegan decoction (LDXGD) containing different dosages Aristolochia manshriensis.
Method:
SD rats were divided into four groups at random, and were fed with three kinds of LDXGD 13, 14.5, 17.5 g x kg(-1) (containing respectively A. manshriensis 1.5, 3, 6 g x kg(-1)) and distilled water respectively for 12 weeks. Renal functional parameters on 4,8,12 w were determined and changes of histomorphology in rats on the end of experiment were observed.
Result:
The LDXGD containing low dose (1.5 g x kg(-1)) A. manshriensis did't induce significantly renal injury in rats during 12 weeks; the LDXGD containing midst dose(3 g x kg(-1)) A. manshriensis induced light damage of proximal convoluted tubule epithelial cells in rats during 12 weeks; the LDXGD containing high dose(6 g x kg(-1)) A. manshriensis induced significantly renal injury in rats after administed 4 weeks. Along with the lasting of administration, the degree of injury became more seriously. The main renal injury location was in proximal convoluted tubule.
Conclusion:
The renal toxicity of LDXGD is correlated with the dose of A. manshriensis and the time of administration. The LDXGD containing low dose A. manshriensis has relative security. However, the LDXGD containing high dose A. manshriensis can induce renal injury.
