Evidence map›Paper›PMID 22771609›Full record

ArticleThe Indian journal of medical research2012

Variations in the occurrence of specific rpoB mutations in rifampicin-resistant Mycobacterium tuberculosis isolates from patients of different ethnic groups in Kuwait.

Suhail Ahmad, Noura M Al-Mutairi, Eiman Mokaddas

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Article in The Indian journal of medical research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

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14citing papers in PubMed
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14 citing papers in PubMed.

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5 · Who and what money

Authors and funding

3 authors.

Suhail AhmadDepartment of Microbiology, Faculty of Medicine, Kuwait University, Kuwait.
Noura M Al-Mutairi
Eiman Mokaddas

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND &

objectivesFrequency of resistance-conferring mutations vary among isoniazid- and ethambutol-resistant Mycobacterium tuberculosis isolates obtained from patients of various ethnic groups. This study was aimed to determine the occurrence of specific rpoB mutations in rifampicin-resistant M. tuberculosis isolates from tuberculosis patients of various ethnic groups in Kuwait.

methodsRifampicin-resistant M. tuberculosis isolates (n=119) from South Asian (n=55), Southeast Asian (n=23), Middle Eastern (n=39) and other (n=2) patients and 107 rifampicin-susceptible isolates were tested. Mutations in rpoB were detected by DNA sequencing. Polymorphisms at katG463 and gyrA95 were detected by PCR-RFLP for genetic group assignment.

resultsNone of rifampicin-susceptible but 116 of 119 rifampicin-resistant isolates showed rpoB mutation(s). Mutations among isolates from South Asian patients were distributed at rpoB516 (20%), rpoB526 (24%) and rpoB531 (27%) while 78 and 51 per cent of isolates from Southeast Asian and Middle Eastern patients, respectively, contained a mutated rpoB531. All isolates with rpoB N-terminal and cluster II mutations were obtained from Middle Eastern and South Asian patients. Most isolates from South Asian (84%) and Southeast Asian (70%) patients belonged to genetic group I while nearly all remaining isolates belonged to genetic group II. Isolates from Middle Eastern patients were distributed among genetic group I (46%), genetic group II (33%) and genetic group III (21%). INTERPRETATION &

conclusionsThe occurrence of specific rpoB mutations varied considerably in rifampicin-resistant M. tuberculosis isolates obtained from patients of different ethnic groups within the same country. The present data have important implications for designing region-specific rapid methods for detecting majority of rifampicin-resistant strains.

Indexed as

Anti-Bacterial AgentsBacterial ProteinsDNA-Directed RNA PolymerasesEthnicityHumansKuwaitMutationMycobacterium tuberculosisRifampinSequence Analysis, DNATuberculosis, Multidrug-ResistantAnti-Bacterial AgentsBacterial ProteinsDNA-Directed RNA PolymerasesRifampinrpoB protein, Mycobacterium tuberculosis

Identifiers

PMID22771609
PMCPMC3401710

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