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微囊藻毒素-LR致小鼠肝細胞DNA-蛋白質交聯作用的研究

時間:2023-04-25 20:45:36 環境保護論文 我要投稿
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微囊藻毒素-LR致小鼠肝細胞DNA-蛋白質交聯作用的研究

摘要: 為探討微囊藻毒素-LR致小鼠肝細胞的DNA-蛋白質交聯作用,將20只昆明雄性小鼠隨機分為4組:1個對照組和3個染毒組,采用腹腔注射進行染毒7d,染毒劑量分別為3.0、6.0和12.01zg·kg-1,檢測小鼠肝細胞DNA-蛋白質交聯程度.結果顯示,3.0、6.0和12.0μg·kg-1囊藻毒素-LR均可導致小鼠肝細胞顯著的DN-蛋白質交聯作用(與對照組相比,p<0.01,p<0.01,p<0.05),當微囊藻毒素為6.0g·kg-1時,這種作用最明顯. Abstract: This study investigated the changes of DNA-protein crosslinks (DPC) in hepatic cells of mice that exposed to microcystin-LR (MCLR). Twenty male Kun Ming mice were divided into four groups: one control and three exposure groups. The control group were treated with saline and the exposure groups were treated with 3.0, 6.0 and 12.0μg·kg-1 MCLR respectively by injected intraperitoneally (i.p.) for 7d. Results showed that the DNA-protein crosslinks induced by MCLR exposures at 3.0, 6.0 and 12.0pμg·kg-1 were significant (p<0.01, p<0.01, p<0.05) compared with the control,and the 6.0μg·kg-1 exposure group was found to induce DNA-protein crosslinks most. In conclusion. MCLR can induce DNA-protein crosslinks in hepatic ceils of mice at the concentratioas of 3.0, 6.0 and 12.0μg·kg-1. 作 者: 段麗菊    張慧珍    董玲    程學敏    崔留欣    DUAN Li-ju    ZHANG Hui-zhen    DONG Ling    CHENG Xue-min    CUI Liu-xin   作者單位: 鄭州大學公共衛生學院,鄭州,450001  期 刊: 生態毒理學報  ISTIC   Journal: ASIAN JOURNAL OF ECOTOXICOLOG  年,卷(期): 2008, 3(6)  分類號: X171.5 X173  Keywords: microcytin-LR    mouse    hepatic cells    DNA-protein crosslinks   

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