Tomioka Haruaki, Sato Katsumasa, Sano Chiaki, Sano Keisuke, Shimizu Toshiaki
Department of Microbiology and Immunology, Shimane Medical University, Izumo, Shimane 693-8501, Japan.
Antimicrob Agents Chemother. 2002 Feb;46(2):519-21. doi: 10.1128/AAC.46.2.519-521.2002.
Mycobacterium tuberculosis and M. avium complex strains given intramacrophage passage (I-type) were compared with those cultured in a liquid medium (E-type) for their drug susceptibilities when they were replicating in Mono-Mac-6 macrophages or A-549 cells. Their intracellular susceptibilities to rifalazil, clarithromycin, and levofloxacin were decreased more in I-type organisms than in E-type organisms, except that their rifalazil susceptibility inside A-549 cells was markedly increased in I-type organisms.
将经巨噬细胞内传代培养的结核分枝杆菌和鸟分枝杆菌复合群菌株(I型)与在液体培养基中培养的菌株(E型)进行比较,观察它们在单核巨噬细胞-6或A-549细胞中复制时的药敏情况。I型菌株对利福拉齐、克拉霉素和左氧氟沙星的细胞内药敏性比E型菌株下降得更多,不过I型菌株在A-549细胞内对利福拉齐的药敏性显著增加。