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Elsevier, Journal of Microbiological Methods, (107), p. 133-137, 2014

DOI: 10.1016/j.mimet.2014.10.001

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One-step species-specific high resolution melting analysis for nosocomial bacteria detection

Journal article published in 2014 by Yeng Pooi Wong, Kek Heng Chua ORCID, Kwai Lin Thong ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Nosocomial infections are a major public health concern worldwide. Early and accurate identification of nosocomial pathogens which are often multidrug resistant is crucial for prompt treatment. Hence, an alternative real-time polymerase chain reaction coupled with high resolution melting-curve analysis (HRMA) was developed for identification of five nosocomial bacteria. This assay targets species-specific regions of each nosocomial bacteria and produced five distinct melt curves with each representing a particular bacterial species. The melting curves were characterized by peaks of 78.8 ± 0.2 °C for Acinetobacter baumannii, 82.7 ± 0.2 °C for Escherichia coli, 86.3 ± 0.3 °C for Klebsiella pneumoniae, 88.8 ± 0.2 °C for Pseudomonas aeruginosa and 74.6 ± 02 °C for methicillin-resistant Staphylococcus aureus. The assay was able to specifically detect the five bacterial species with an overall detection limit of 2 × 10− 2 ng/μL. In conclusion, the HRM assay developed is a simple and rapid method for identification of the selected nosocomial pathogens.