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P082: Beijing and non-Beijing genotypes detection of mycobacterium tuberculosis by melting curve analyzes
Antimicrobial Resistance and Infection Control volume 2, Article number: P82 (2013)
Introduction
Tuberculosis is one of the most important infectious diseases in the world today. Rapid diagnosis of drug resistant Mycobacterium tuberculosis (MTB) is critical to starting of an appropriate treatment and preventing of more spread drug resistant MTB strains.
Objectives
Due to association of Beijing genotype with drug resistance in MTB, we developed a rapid and non-culture method for detection Beijing and non-Beijing MTB in clinical samples.
Methods
We modified Taqman Real time PCR for detection Beijing and non-Beijing genotypes of Mycobacterium tuberculosis to a free probe method in presence of a single dye together with a melting curve analysis. We then performed a blinded screening with both methods on 33 septum samples from treated tuberculosis patients.
Results
We were obtained the same results by both methods. Of the 33 patients, 5 samples were Beijing genotype and 28 were non-Beijing genotype. In free probe method, we were clearly identified a melting peak at 81°C corresponds to non-Beijing and a melting peak at 88°C corresponds to Beijing genotype.
Conclusion
DNA melting curve analysis is a simple and efficient method for the specific detection of amplified products and greatly reduces the cost molecular detection.
Disclosure of interest
None declared.
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Corresponding author
Correspondence to Z Tavakoli.
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This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Tavakoli, Z., Nazemi, A. P082: Beijing and non-Beijing genotypes detection of mycobacterium tuberculosis by melting curve analyzes. Antimicrob Resist Infect Control 2, P82 (2013). https://doi.org/10.1186/2047-2994-2-S1-P82
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Keywords
- Mycobacterium Tuberculosis
- Melting Curve Analysis
- Melting Peak
- Taqman Real Time
- Beijing Genotype
