title: In Vitro and In Vivo Genotoxicity Assessment of Aristolochia manshuriensis Kom.
abstract: Arisolochiae species plants containing aristolochic acids I and II (AA I and AA II) are well known to cause aristolochic acid nephropathy (AAN). Recently, there are various approaches to use AAs-containing herbs after the removal of their toxic factors. However, there is little information about genotoxicity of Arisolochiae manshuriensis Kom. (AMK) per se. To obtain safety information for AMK, its genotoxicity was evaluated in accordance with OECD guideline. To evaluate genotoxicity of AMK, we tested bacterial reverse mutation assay, chromosomal aberration test, and micronucleus test. Here, we also determined the amounts of AA I and II in AMK (2.85 ± 0.08 and 0.50 ± 0.02 mg/g extract, resp.). In bacterial reverse mutation assay, AMK dose-dependently increased revertant colony numbers in TA98, TA100 and TA1537 regardless of metabolic activation. AMK increased the incidence of chromosomal aberration in Chinese hamster ovary-K1 cells, but there was no statistically significant difference. The incidences of micronucleus in bone marrow erythrocyte were significantly increased in mice after oral administration of AMK (5000 mg/kg), comparing with those of vehicle group (P < 0.05). The results of three standard tests suggest that the genotoxicity of AMK is directly related to the AAs contents in AMK.
authors: KM-Based Herbal Drug Research Group, Korea Institute of Oriental Medicine, Daejeon 305-811, Republic of Korea.
authors: Youn-Hwan
authors: YH
authors: Hwang
authors: Taesoo
authors: T
authors: Kim
authors: Won-Kyung
authors: WK
authors: Cho
authors: Hye Jin
authors: HJ
authors: Yang
authors: Dong Hoon
authors: DH
authors: Kwak
authors: Hyunil
authors: H
authors: Ha
authors: Kwang Hoon
authors: KH
authors: Song
authors: Jin Yeul
authors: JY
authors: Ma