OBJECTIVE:To explore the feasibility of detecting bacterial endoxins in low molecular weight heparins calcium injection LMWHC by tachypleus amebocyte lysate(TAL).METHODS:Bacterial endotoxins in samples were detected qualita?tively and quantitatively by kinetic turbidimetric assay and gel-clot method.RESULTS:Diluted to the concentration of25IU/ml,LMWHC had an obvious interference action to the TAL test,while not at the concentration of12.5IU/ml.The contents of bacterial endotoxins in all samples were less than0.01EU/IU.CONCLUSION:It is feasible to detect bacterial endotoxins in LMWHC by TAL test.

OBJECTIVE:To explore a comprehensive drug quality evaluation method so as to provide constructive suggestions for the production and quality inspection of drugs.METHODS:The quality inspection data of 198 batches of flupentixol and melitracen tablets collected automatically by Laboratory Information Management System(LIMS) in Guangdong institute for drug control in 2008 were analyzed statistically,and the drug quality indexes were computed and the drug quality was analyzed comprehensively.RESULTS:Of all the quality items,the content uniformity showed the maximum impact on the quality of the tablets,followed by the content determination item,with disintegration time item showing the least impact on the quality of the tablets.CONCLUSIONS:LIMS is a powerful tool in collecting large quantities of drug data,and the quality index serves as an effective means for the evaluation of drug quality.

Objective To explore the the analytical method for the quality difference of Radix Salviae Mihiorrhizae (RSM) injection. Methods Parallel intercomparison experiment was carried out in different batches of RSM injection samples which had different degrees of adverse drug reaction. The samples were analyzed by gel size exclusion chromatog-zraphy and C18 HPLC fingerprint. Subtractive analysis was used to reveal the information of the non-low molecular weight phenolic acids. Results There were obvious differences between the results of size exclusion chromatography. The amount of the non-low molecular weight phenolic acids from different batches of the samples was also different, which was correlated with the degrees of acute toxicity in guinea pigs. Conclusion The amount of the non-low molecular weight phenolic acids varies with different batches of Radix Salviae Mihiorrhizae injection. It is suggested that non-low molecular weight phenolic acids can be used for the quality control of Radix Salviae Mihiorrhizae injection. For the first time, the perspective that the corresponding relationship between the fingerprint and their toxicities of Traditional Chinese medicine injection may be one of the most important fields is put forward.