Metronidazole therapy in mice infected with tuberculosis

被引:70
作者
Brooks, JV [1 ]
Furney, SK [1 ]
Orme, IM [1 ]
机构
[1] Colorado State Univ, Dept Microbiol, Mycobacteria Res Labs, Ft Collins, CO 80523 USA
关键词
D O I
10.1128/AAC.43.5.1285
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The capacity of metronidazole to inhibit the growth of Mycobacterium tuberculosis was tested in in vitro and in vivo mouse models. In vitro addition of metronidazole to cultures of infected bone marrow-derived macrophages had no effect, nor did it increase the reduction in bacterial load due to isoniazid. In vivo, metronidazole did not reduce bacterial numbers in the lungs of aerosol-infected mice during the active stage of the disease, during a phase of containment, or after prolonged isoniazid therapy (Cornell model). A small but significant reduction was seen if metronidazole therapy was given during an established chronic disease state 100 days after aerosol administration. These data indicate that under most conditions M. tuberculosis organisms are not in a metabolic state in which they are susceptible to the action of metronidazole and, hence, that this drug would be of limited clinical value.
引用
收藏
页码:1285 / 1288
页数:4
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