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静脉注射甲氧苄啶-磺胺甲恶唑的临床药理学

Clinical pharmacology of intravenously administered trimethoprim-sulfamethoxazole.

作者信息

Grose W E, Bodey G P, Loo T L

出版信息

Antimicrob Agents Chemother. 1979 Mar;15(3):447-51. doi: 10.1128/AAC.15.3.447.

Abstract

Pharmacokinetic studies of intravenously administered trimethoprim-sulfamethoxazole (TMP-SMX) were conducted in 11 patients with cancer while they received therapy with this drug combination for infection. Each patient received 160 mg of TMP and 800 mg of SMX every 8 h. The highest plasma concentrations of both agents were attained at the end of a 1-h infusion period, and the levels were maintained above 38 mug of free SMX and 2 mug of TMP per ml for 2 to 4 h on day 1. On day 4, these concentrations were exceeded at all time intervals of blood sampling. High concentrations of TMP and free SMX were recovered in the urine during the 8-h period. The plasma half-lives of TMP and free SMX, as determined during the first 8-h period, were 7.6 and 8.6 h, respectively. Compared with SMX, TMP had an approximately 2.5 times higher volume of distribution. This drug combination was well tolerated by the patients and unaccompanied by drug-related toxicity.

摘要

对11例癌症患者进行了静脉注射甲氧苄啶-磺胺甲恶唑(TMP-SMX)的药代动力学研究,这些患者在接受该药物组合治疗感染期间。每位患者每8小时接受160毫克TMP和800毫克SMX。两种药物的最高血浆浓度在1小时输注期结束时达到,在第1天,每毫升游离SMX浓度维持在38微克以上,TMP浓度维持在2微克以上达2至4小时。在第4天,所有采血时间间隔的浓度均超过上述水平。在8小时期间尿液中回收了高浓度的TMP和游离SMX。在前8小时期间测定的TMP和游离SMX的血浆半衰期分别为7.6小时和8.6小时。与SMX相比,TMP的分布容积约高2.5倍。患者对该药物组合耐受性良好,未出现与药物相关的毒性反应。

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Trimethoprim, a sulphonamide potentiator.甲氧苄啶,一种磺胺增效剂。
Br J Pharmacol Chemother. 1968 May;33(1):72-90. doi: 10.1111/j.1476-5381.1968.tb00475.x.
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Excretion of sulfamethoxazole and trimethoprim into human bile.磺胺甲恶唑和甲氧苄啶向人胆汁中的排泄。
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