Wirkungssteigerung von Fosfomycin durch Zusatz von Glukose-6-Phosphat bei intraperitoneal infizierten Mäusen

Alexander Hirschl , Gerold Stanek , Manfred Rotter
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引用次数: 4

Abstract

The increase of antimicrobial activity of Fosfomycin by glucose-6-phosphate (G-6-P) has often been demonstrated by in vitro studies. However, this effect was never sufficiently established in vivo. Our study was carried out in order to investigate the effects of the addition of G-6-P to Fosfomycin in white mice (strain G.P. of N.I.H.), which were intraperitoneally infected with a strain of S. typhimurium (103 c.f.u/0.5 ml i.p.). One and six hours after the infection, 0.1 ml consisting of increasing doses of G-6-P (0, 5, 25, 50, 250 and 500 μg/g) and decreasing doses of Fosfomycin (15.6, 7.8, 3.9, 1.95, 0.98 and 0.49 μg/g) were applied i.m., using 10 animals for each combination. Tables 1 and 2 show the results of this therapy with regard to the reduction of the ED50 of Fosfomycin. It can be seen that the addition of 25 μg G-6-P/g body-weight significantly reduces the ED50 within the first days (Tab. 1), while doses of 50 and more μg G-6-P/g significantly reduce the ED50 during the whole investigation period (Tab. 2). These results justify the proposal to use a combination of Fosfomycin and G-6-P in clinical studies for the treatment of human infections.

加入葡萄糖6磷酸盐,对感染静脉注射液的老鼠产生增效作用
葡萄糖-6-磷酸(G-6-P)增加磷霉素的抗菌活性经常被体外研究证明。然而,这种效应从未在体内得到充分证实。本研究旨在探讨在磷霉素中添加G-6-P对小鼠(N.I.H. G.P.)腹腔感染鼠伤寒沙门氏菌(103 c.f.u/0.5 ml i.p)的影响。感染1、6 h后,分别ig给药g -6- p(0、5、25、50、250、500 μg/g)和磷霉素(15.6、7.8、3.9、1.95、0.98、0.49 μg/g),每组0.1 ml,每组10只。表1和表2显示了该疗法关于磷霉素ED50降低的结果。可以看出,添加25 μg -6- p /g体重显著降低了第一天的ED50(表1),而添加50 μg -6- p /g及以上的剂量显著降低了整个研究期间的ED50(表2)。这些结果证明了在临床研究中使用磷霉素和g -6- p联合治疗人类感染的建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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