摘要
目的 :为探讨中药黄芪与绿豆对砒石染毒大鼠毒副作用的拮抗情况及其保护作用与金属硫蛋白(MT)的关系。方法 :用黄芪、绿豆及阳性对照药物氯化镉 (CdCl2 )相比较 ,运用镉饱和法及RT PCR测定肝细胞MT的量及mRNA的表达 ,并通过检测丙氨酸氨基转移酶 (ALT)、血尿素氮 (BUN)、血清肌酐(SCR)观察其对砒石引起的肾脏、肝脏的保护作用。结果 :测的的MT的量与其mRNA表达的量具有一致性 ,砒石、黄芪、绿豆均能诱导MT的合成 ,单纯砒石诱导MT的量很少 ,增加黄芪、绿豆后表达量明显增加 ,黄芪与绿豆共同作用增加更明显 (P <0 .0 5 )。结论 :黄芪与绿豆对砒石染毒大鼠金属硫蛋白均有影响 ,对砒石毒性有一定的拮抗作用。
AIM: To investigate the effects of oral administration of Astragalus membranceus, mung bean and arsenolite on the toxic of the arsenolite induced rats and the possible mechanisms with metallothionein (MT). METHODS: All the rats were oral administration with arsenolite. The Astragalus membranceus and mung bean were compared with the cadmium chloride which induced MT synthesis. The contents of MT were determined by cadmium saturation method, the liver mRNA levels for MT 1, MT 2 were detected by RT PCR. The protective effects of renal and liver were observed by testing alanine aminotransferase (ALT), blood urea nitrogen (BUN) and serum creatinine (SCR). RESULTS: The contents of MT were accorded with the mRNA expression of MT 1, MT 2. Arsenolite, Astragalus membranceus and mung bean could induce the synthesis of MT, but the contents of MT which arsenolite induced were trace. The contents of MT significantly increased after oral administration of Astragalus membranceus and mung bean, especially in the Astragalus membranceus group (P< 0.05 ). CONCLUSIONS: Astragalus membranccus and mung bean has a significantly inference in the MT and an antagonistic action on arsenolite induced rats.
出处
《中国临床药理学与治疗学》
CAS
CSCD
2005年第2期222-225,共4页
Chinese Journal of Clinical Pharmacology and Therapeutics
关键词
黄芪
绿豆
砒石
金属硫蛋白
Astragalus membranceus
mung bean
arsenolite
metallothionein
