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Year : 2018  |  Volume : 36  |  Issue : 3  |  Page : 369-375

Rapid detection of the commonly encountered carbapenemases (New Delhi metallo-β-lactamase, OXA-48/181) directly from various clinical samples using multiplex real-time polymerase chain reaction assay

Department of Microbiology, P. D. Hinduja Hospital and Medical Research Centre, Mumbai, Maharashtra, India

Correspondence Address:
Dr. Camilla Rodrigues
Department of Microbiology, P. D. Hinduja Hospital and Medical Research Centre, Veer Savarkar Marg, Mahim (West), Mumbai - 400 016, Maharashtra
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijmm.IJMM_18_324

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Background: Resistance due to New Delhi metallo-β-lactamase (NDM) and OXA-48/181 continues to emerge as a threat which is associated with nosocomial outbreaks and is a serious healthcare concern. Phenotypic detection being laborious and time-consuming requires rapid detection of NDM and OXA-48/181, which is achieved through real-time polymerase chain reaction (RT-PCR). Materials and Methods: In this study, RT-PCR assay was developed to simultaneously detect NDM and OXA-48/181. The assay was validated on 102 non-duplicate, phenotypically characterised clinical samples. Results: The assay showed a sensitivity and specificity of 97% and 100% for the detection of carbapenemases in comparison to conventional PCR. The in-house developed multiplex RT-PCR would help to rule-in the presence of NDM and OXA-48/181. Conclusions: Rapid detection of these carbapenemases would be assist in better patient management, in terms of accurate antimicrobial treatment, help in cohorting infected from uninfected patient to prevent spread.


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2004 - Indian Journal of Medical Microbiology
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