Comparative 28-day repeated oral toxicity of Longdan Xieganwan, Akebia trifoliate (Thunb.) koidz., Akebia quinata (Thunb.) Decne. and Caulis aristolochiae manshuriensis in mice
2008
Xue, Xiang | Xiao, Ying | Gong, Likun | Guan, Shuhong | Liu, Yongzhen | Lu, Henglei | Qi, Xinming | Zhang, Yunhai | Li, Yan | Wu, Xiongfei | Ren, Jin
Ethnopharmacological relevance: Longdan Xieganwan, which contains Aristolochia species, is a traditional Chinese prescription. It has been used for thousands of years to “enhance liver”. However, many cases of Longdan Xieganwan induced nephropathy were reported recently. Aim of the study: This study was designed to compare the possible toxic effects of Longdan Xieganwan and three different Aristolochia species, i.e. Akebia trifoliate (Thunb.) koid (Akebia trifoliate), Akebia quinata (Thunb.) Decne. (Akebia quinata) and Caulis aristolochiae manshuriensis (Aristolochia manshuriensis). Materials and methods: Mice were orally administered these drugs for 28 days. Clinical signs, body weights, serum biochemistry, organ weights and histopathology were examined. Results: Significantly decreased body weights and obvious nephropathy were noticed in the Aristolochia manshuriensis groups at doses higher than 0.24g/kg/d. A few endothelial cell degenerations in renal glomerulus were observed in the Akebia trifoliate group at a high-dose of 2.00g/kg/d. No significant changes were observed in the other groups. Conclusions: The no-observed-adverse-effect levels (NOAELs) for Aristolochia manshuriensis, Akebia trifoliate, Akebia quinata and Longdan Xieganwan in this study for mice were 0.06g/kg/d, 0.40g/kg/d, higher than 3.00g/kg/d and higher than 10.00g/kg/d, which were equivalent to 0.25 times, 5 times, 25 times and 10 times of normal human dose in clinical prescription, respectively.
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