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Antimicrob. Agents Chemother. · Apr 2009
A novel gene, erm(41), confers inducible macrolide resistance to clinical isolates of Mycobacterium abscessus but is absent from Mycobacterium chelonae.
- Kevin A Nash, Barbara A Brown-Elliott, and Richard J Wallace.
- Department of Pathology and Laboratory Medicine, Saban Research Institute of Childrens Hospital Los Angeles, Los Angeles, California 90027, USA. kanash@usc.edu
- Antimicrob. Agents Chemother. 2009 Apr 1; 53 (4): 1367-76.
AbstractMycobacterium abscessus infections tend to respond poorly to macrolide-based chemotherapy, even though the organisms appear to be susceptible to clarithromycin. Circumstantial evidence suggested that at least some M. abscessus isolates might be inducibly resistant to macrolides. Thus, the purpose of this study was to investigate the macrolide phenotype of M. abscessus clinical isolates. Inducible resistance to clarithromycin (MIC > 32 microg/ml) was found for 7 of 10 clinical isolates of M. abscessus previously considered susceptible; the remaining 3 isolates were deemed to be susceptible (MIC
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