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Antibiotic susceptibility of diverse Mycobacterium abscessus complex strains in New South Wales, Australia.
- Source :
-
Pathology [Pathology] 2015 Dec; Vol. 47 (7), pp. 678-82. - Publication Year :
- 2015
-
Abstract
- Members of the Mycobacterium abscessus complex are emerging pathogens of increasing importance, causing both respiratory and soft tissue infections, but precise speciation is problematic. This study was performed to examine the subspecies and antibiotic susceptibility of M. abscessus complex isolates collected during 2013 at the statewide New South Wales Mycobacterium Reference Laboratory (NSW MRL), Australia. Mycobacterium abscessus subsp. abscessus accounted for more than half of all M. abscessus isolates (nā=ā24, 57.1%), and M. abscessus subsp. massiliense comprised the remainder of the isolates (nā=ā18, 42.9%). There were no M. abscessus subsp. bolletii isolates. The prevalence of antibiotic resistance to all antibiotics, apart from amikacin was high, with 26.3% of isolates being reliably susceptible to only amikacin. Most M. abscessus subsp. abscessus isolates (80%) demonstrated inducible clarithromycin resistance whereas the majority of M. abscessus subsp. massiliense isolates (94.4%) remained susceptible to clarithromycin. There was a good correlation between the erm(41) genotype and clarithromycin susceptibility results after 14 days of incubation for most isolates with only three exceptions. Further studies correlating in vitro susceptibility profiles with clinical outcomes of M. abscessus infections treated with combination antimicrobial therapy are warranted.
- Subjects :
- Chromatography, High Pressure Liquid
DNA, Bacterial analysis
Humans
Microbial Sensitivity Tests
New South Wales
Real-Time Polymerase Chain Reaction
Anti-Bacterial Agents pharmacology
Drug Resistance, Microbial genetics
Nontuberculous Mycobacteria drug effects
Nontuberculous Mycobacteria genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1465-3931
- Volume :
- 47
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Pathology
- Publication Type :
- Academic Journal
- Accession number :
- 26517625
- Full Text :
- https://doi.org/10.1097/PAT.0000000000000327