Rapid genotypic detection of rifampin- and isoniazid-resistant Mycobacterium tuberculosis directly in clinical specimens.
نویسندگان
چکیده
A multiplex PCR DNA strip assay (Genotype MTBDR) designed to detect rifampin (rpoB) and high-level isoniazid (katG) resistance mutations in Mycobacterium tuberculosis isolates was optimized for clinical specimens. Successful genotypic results were achieved with 36 of 38 (95%) smear-positive respiratory specimens, allowing rapid therapeutic adjustments in transmittable drug-resistant tuberculosis.
منابع مشابه
Detection of Isoniazid and Rifampin Resistant Strain of Mycobacterium Tuberculosis Isolated from patients in Golestan province (North of Iran)
Abstract Background and objectives: With almost nine million new cases each year, tuberculosis is still one of the most Life-threatening diseases in the World. Distribution of drug resistant strains of M.tuberculosis has a lot of importance. This research was carried out to determine the frequency of drug resistance of M. tuberculosis in strains isolated in Golestan province. Material and...
متن کاملتشخیص موتاسیون در کدون 315 ژن katG، مارکر مقاومت به ایزونیازید در سوش‌های مایکوباکتریوم توبرکولوزیس جدا شده از بیماران اصفهان و تهران با روش PCR-RFLP
Background and Objective: Drug resistance to tuberculosis is continuously increasing and is a significant threat to tuberculosis control programs because afew effective drugs are present against Mycobacterium tuberculosis. Although isoniazid (INH) is the most effective drug against tuberculosis, resistance to this drug also develops readily. Mutations in katG, specially the Ser315Thr substituti...
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Past genotypic studies of Mycobacterium tuberculosis may have incorrectly estimated the importance of specific drug resistance mutations due to a number of sampling biases including an overrepresentation of multidrug-resistant (MDR) isolates. An accurate assessment of resistance mutations is crucial for understanding basic resistance mechanisms and designing genotypic drug resistance assays. We...
متن کاملCombination of commercially available molecular assays and culture based methods in diagnosis of tuberculosis and drug resistant tuberculosis
Early diagnosis of tuberculosis is of major clinical importance. Among 4733 clinical specimens collected from 3363 patients and subjected to Ziehl-Neelsen microscopy, 4109 were inoculated onto Löwenstein-Jensen slants and 3139 in Bactec/9000MB. Polymerase Chain Reaction (PCR) was performed in 3139 specimens, whereas, a genotypic assay was directly applied in 93 Mycobacterium tuberculosis comple...
متن کاملInvestigation of the rpoB Mutations Causing Rifampin Resistance by Rapid Screening in Mycobacterium Tuberculosis in North-East of Iran
Background and Objectives: The incidence of rifampin-resistant strains of Mycobacterium tuberculosis has attracted more attention than the tuberculosis infection due to laborious treatment and control. Recognizing the Mycobacterium tuberculosis genotypes involving in drug resistance via multiplex PCR, a simple and rapid genotyping method, is an emergency for better tre...
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ورودعنوان ژورنال:
- Journal of clinical microbiology
دوره 44 7 شماره
صفحات -
تاریخ انتشار 2006