کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10962024 1102328 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The antimicrobial effect of colistin methanesulfonate on Mycobacterium tuberculosis in vitro
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی میکروبیولوژی و بیوتکنولوژی کاربردی
پیش نمایش صفحه اول مقاله
The antimicrobial effect of colistin methanesulfonate on Mycobacterium tuberculosis in vitro
چکیده انگلیسی
Polymyxins have previously been described to have activity against Mycobacterium tuberculosis (MTB), but further research was abandoned due to systemic toxicity concerns to achieve the required MIC. Colistin methanesulfonate (CMS), a polymyxin, is well tolerated when inhaled directly into the lungs, resulting in high local concentrations. We report here for the first time, MIC and MBC data for CMS determined by the microtiter Alamar Blue assay (MABA). We also determined how the MIC would be affected by the presence of pulmonary surfactant (PS) and if any synergy with isoniazid (INH) and rifampicin (RIF) exists. The effect of CMS on the ultrastructure of MTB was also determined. The MIC for CMS was 16 mg/L, while the MBC was 256 mg/L. MIC for CMS in PS was antagonised by eight fold. For synergy, indifference was determined while time-kill assays revealed a greater killing effect when CMS was used together with INH. Ultrastructure analysis suggests that the disruption of the outer polysaccharide layer of MTB by CMS may lead to enhanced uptake of INH. Our findings may provide insight for further investigations of CMS against MTB.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tuberculosis - Volume 95, Issue 4, July 2015, Pages 440-446
نویسندگان
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