- Turkish Journal of Medical Sciences
- Vol: 46 Issue: 6
- Growing OXA-23 type strains among carbapenem-resistant Acinetobacter baumannii and tigecycline as an...
Growing OXA-23 type strains among carbapenem-resistant Acinetobacter baumannii and tigecycline as an alternate combination therapy
Authors : Şerife Altun, Zeliha Koçak Tufan, Belgin Altun, Ufuk Önde, Sami Kinikli, Ali Pekcan Demiröz
Pages : 1894-1899
View : 17 | Download : 5
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :Background/aim: The increasing prevalence and global spread of difficult-to-treat carbapenem-resistant Acinetobacter baumannii has become a serious problem. The aim of this study is to investigate the resistance patterns and tigecycline sensitivity of carbapenem-resistant A. baumannii strains. Materials and methods: Acinetobacter strains that were carbapenem-resistant and collected mainly from intensive care units were included into this study. The antibiotic sensitivity/resistance of the strains to other antibiotics and tigecycline were noted. Presence of blaOXA-23, blaOXA-48, blaOXA58, and NDM-1 was investigated by PCR. Results: In total, 44 carbapenem-resistant A. baumannii strains were detected. In addition, 57% (25/44) showed resistance to netilmicin and 2% (1/43) to tigecycline. All of the strains were susceptible to colistin. blaOXA-58 was found only in one (2%) strain while blaOXA-23 was found in 14 (32%) strains. All strains were negative for blaOXA-48 and NDM-1. Conclusion: blaOXA-23 was the main resistance pattern in carbapenem-resistant A. baumannii strains. blaOXA-58 was present only in one strain and no blaOXA-48 was found. Tigecycline susceptibility is high and it can be a treatment option for a possible combination therapy of carbapenem-resistant A. baumannii, especially for those for whom colistin is contraindicated because of its toxicity.Keywords : OXA, beta-lactamases, Acinetobacter, carbapenemase, drug resistance