OBJECTIVE:To compare the acute toxicity of ethanol extract from raw product and different processed products of Wikstroemia indica on mice,and provide basis for optimizing the processing technology of perspiration method for W. indica and medication safety. METHODS:Perspiration method was used to process the W. indica pieces for 30 d to get processed product 1 and process its coarse powder for 14,7 d to get processed product 2,processed product 3,respectively. Then using 70％ ethanol as solvent,percolation method was used to extract the raw W. indica and its different processed products,and acute toxicity test was conducted on mice for different ethanol extracts. RESULTS:The median lethal dose(LD50)of ethanol extracts from raw W. in-dica and processed product 1 were 4.05 and 6.65 g/kg,equivalent to 19,32 times of the clinical daily dose of a 70 kg adult,re-spectively. While the LD50 of ethanol extract from processed product 2 and processed product 3 can not be measured,the maximum tolerated dose(MTD)were measured as 20.0,15.0 g/kg,equivalent to 95,71 times of the clinical daily dose of a 70 kg adult,re-spectively;the maximum dose(MLD)were measured as approximately 30.0,20.0 g/kg,equivalent to 143,95 times of the clini-cal daily dose of a 70 kg adult,respectively. CONCLUSIONS:The toxicity of processed products of W. indica is obviously lower than that of raw products,and its toxicity after processing the coarse powder for 14 d is lower than that after processing the coarse powder for 7 d.%目的:比较苗药了哥王生品、不同炮制品乙醇提取物对小鼠的急性毒性,为了哥王汗渍法炮制工艺优选及其安全用药提供依据.方法:采用汗渍法对了哥王的饮片炮制30 d得炮制品一,对了哥王粗粉分别炮制14、7 d得炮制品二和炮制品三.以70％乙醇为溶剂,采用渗漉法对了哥王生品及不同炮制品进行提取,并对不同乙醇提取物进行小鼠急性毒性实验.结果:了哥王生品、炮制品一乙醇提取物的半数致死量(LD50)分别为4.05、6.65 g/kg,相当于临床70 kg成人日用量的19、32倍.而了哥王炮制品二、炮制品三乙醇提取物的LD50无法测出;最大耐受量(MTD)分别为20.0、15.0 g/kg,相当于临床70 kg成人日用量的95、71倍;最大给药量(MLD)分别近似为30.0、20.0 g/kg,相当于临床70 kg成人日用量的143、95倍.结论:了哥王炮制品的毒性明显低于生品,且了歌王粗粉炮制14 d后毒性低于炮制7 d.
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