PCR amplification of variable sequence upstream of katG gene to subdivide strains of Mycobacterium tuberculosis complex.
نویسندگان
چکیده
PCR amplification of a species-specific 2-kb KpnI fragment of variable size located 10 kb upstream of the katG gene was used to subdivide 130 clinical isolates of Mycobacterium tuberculosis. Seven subtypes were identified, and their frequencies were distributed normally with respect to the size of the amplified product.
منابع مشابه
Characterization of Mutations in the Rpob and Katg Gene of Mycobacterium Tuberculosis Isolates From Pasteur Institute of Tehran
Objective: The Rifampicin resistance and susceptibility of Mycobacterium tuberculosis are caused by mutations in the 81-base pair region of the rpoB gene encoding the b-subunit of RNA polymerase. Methods: Isoniazid resistance of M. tuberculosis is related to mutations in inha , oxyR and ahpC genes which 30 to 90 percent of Isoniazid resistance is occurred in 3015 codons of kat...
متن کاملCharacterization of Mutations in the Rpob and Katg Gene of Mycobacterium Tuberculosis Isolates From Pasteur Institute of Tehran
Objective: The Rifampicin resistance and susceptibility of Mycobacterium tuberculosis are caused by mutations in the 81-base pair region of the rpoB gene encoding the b-subunit of RNA polymerase. Methods: Isoniazid resistance of M. tuberculosis is related to mutations in inha , oxyR and ahpC genes which 30 to 90 percent of Isoniazid resistance is occurred in 3015 codons of kat...
متن کاملIsoniazid MIC and KatG Gene Mutations among Mycobacterium tuberculosis Isolates in Northwest of Iran
Objective(s) Isoniazid (INH) is one of the main first line drugs used in treatment of tuberculosis and development of resistance against this compound can result in serious problems in treatment procedures. Resistance to INH is mediated mainly by mutation in KatG gene that is coded for the catalase enzyme. The proportional method for detection of INH-resistance is time consuming due to the slo...
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...
متن کاملkatG mutations in isoniazid-resistant strains of Mycobacterium tuberculosis isolates from Belarusian patients.
The aim of this study was to investigate the frequency, location and type of katG mutations in Mycobacterium tuberculosis strains isolated from patients in Belarus. Mutations in different codons causing resistance to isoniazide in the gene of catalase peroxides (katG) in Belarusian strains was determined. 42 strains of Rif-r and Inhr(MDR) were isolated in different regions of Belarus. Culture s...
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عنوان ژورنال:
- Journal of clinical microbiology
دوره 32 12 شماره
صفحات -
تاریخ انتشار 1994