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한국인에 있어서의 Sulfamethizol 의 Acetyl 화에 관한 생물약제학적 연구
강영수 한국약제학회 1975 Journal of Pharmaceutical Investigation Vol.5 No.2
In the course of the investigations on drug metabolism and drug disposition in man, it has been noted that there are often rather striking individual differences in the response to drugs and in the ability to metabolize and dispose of drugs. Some of the person-to-person differences are due to environmental factors, but some have clearly demonstrated to be genetically determined. This report determined the rate of acetylation and some constants of sulfamethizole to Korean. The results are as follows: The overall removal rate of drug from the body is 0.572(k, hr^(-1)) the rate constant for acetylation, 0.222(k₂, hr^(-1)) the rate constant for excretion of unchanged drug, 0.350(k₃, hr^(-1)) and the faction of a dose ultimately excreted in the urine as unchanged drug is 0.677. And this report determined the optimal time to make a single blood level determination after an oral dose of the drug and obtain a reasonable index of the rate of sulfamethizole metabolism. The resulting data(sulfamethizole levels at 5 hours after drug administration) clearly established bimodality even though only about 106 subjects were tested.