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• W3145886704 abstract "Zuotai(gTso thal) is a typical representative of Tibetan medicines containing heavy metals,but there is still lack of modern safety evaluation data so far. In this study,acute toxicity test,sub-acute toxicity test,one-time administration mercury distribution experiment,long-term mercury accumulative toxicity experiment and preliminary study on clinical safety of Compound Dangzuo were conducted in the hope of obtain the medicinal safety data of Zuotai. In the acute toxicity test,half of KM mice given the lethal dose of Zuotai were not died or poisoned,and LD50was not found. The maximum tolerated dose of Zuotai was 80 g·kg-1. In the subacute toxicity test,Zuotai could reduce ALT,AST,Crea levels in serums under low dose(13. 34 mg·kg-1·d-1) and medium dose(53.36 mg·kg-1·d-1),with significant difference under low dose,and increase the levels of ALT,AST,MDA,Crea in serums under high dose(2 000 mg·kg-1·d-1); besides,the levels of BUN and GSH in serums reduced with the increase in dose of Zuotai,indicating a significant dose-effect relationship. In the one-time administration distribution experiment,the content of mercury in rat kidney,liver and lung increased after the one-time administration with Zuotai,with a significant dose-dependent relationship in kidney. In the long-term mercury accumulative toxicity experiment,KM mice were administered with equivalent doses of Zuotai for 4. 5months and then stopped drug administration for 1. 5 months. Since the 2. 5thmonth,they showed significant mercury accumulation in kidney,which gradually reduced after drug withdrawal,without significant change in mercury content in liver,spleen and brain and ALT,AST,TBIL,BUN and Crea in serum. At the 4. 5thmonth after drug administration,KM mice showed slight structural changes in kidney,liver and spleen tissues,and gradually recovered to normal after drug withdrawal. Besides,no significant difference in weight gain was found between the Zuotai group and the control group. According to the findings of the clinical safety study of Dangzuo,after subjects administered Dangzuo under clinical dose for one month,their serum biochemical indicators,blood routine indicators and urine routine indicators showed no significant adverse change. This study proved that traditional Tibetan medicine Zuotai was slightly toxic,with a better safety in clinical combined administration and no adverse effects on bodies under the clinical dose and clinical medication cycle. However,long-term high-dose administration of Zuotai may have a certain effect on kidney." @default.
• W3145886704 created "2021-04-13" @default.
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• W3145886704 date "2014-01-01" @default.
• W3145886704 modified "2023-09-23" @default.
• W3145886704 title "Study on safety of Tibetan medicine Zuotai and preliminary study on clinical safety of its compound Dangzuo" @default.
• W3145886704 hasPublicationYear "2014" @default.
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