Penitentiary population of Mycobacterium tuberculosis in Kyrgyzstan: exceptionally high prevalence of the Beijing genotype and its Russia-specific subtype.
Here, we present results of the first study of the Mycobacterium tuberculosis genotypes circulating in Kyrgyzstan. We focused on the incarcerated population known to be at high-risk for tuberculosis (TB) and with a significant impact on TB incidence in the general population. Beijing genotype was detected in 42 of 56 M. tuberculosis sputum-extracted DNA samples from newly-diagnosed adult pulmonary TB patients. RIF and INH resistance was genotypically detected in 28% and 55% samples; 13 of 15 MDR strains belonged to Beijing genotype. 12-locus MIRU-VNTR typing showed 8 of 56 samples to be mixed cases; 7 of them contained a Beijing strain. MIRU analysis demonstrated a high homogeneity of the studied collection (HGI=0.66) while 28 of 56 strains had a profile 223325153533 corresponding to Beijing/M2 subtype highly prevalent in different Russian settings. Three hypervariable loci, QUB-3232, VNTR-3820 and VNTR-4120, permitted to further subdivide 28 Beijing/M2 strains into 11 subtypes shared by 1 to 9 strains. To conclude, all markers taken together, the penitentiary population of M. tuberculosis in Kyrgyzstan exhibited a strong genetic affinity to Russia and a weak relatedness to East Asia.
Mokrousov
Igor
I
Unité de la Tuberculose et des Mycobactéries, Institut Pasteur de Guadeloupe, Abymes 97183 Guadeloupe. imokrousov@mail.ru
Valcheva
Violeta
V
Sovhozova
Nurmira
N
Aldashev
Almaz
A
Rastogi
Nalin
N
Isakova
Jainagul
J
D000328:Adult; D000904:Antibiotics, Antitubercular / Q000494:pharmacology; D004269:DNA, Bacterial / Q000032:analysis / Q000235:genetics; D024901:Drug Resistance, Multiple, Bacterial / Q000235:genetics; D014644:Genetic Variation; D016680:Genome, Bacterial; D006801:Humans; D007538:Isoniazid / Q000494:pharmacology; D007707:Kyrgyzstan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009169:Mycobacterium tuberculosis / Q000187:drug effects / Q000235:genetics*; D015995:Prevalence; D011329:Prisoners; D012293:Rifampin / Q000494:pharmacology; D018088:Tuberculosis, Multidrug-Resistant / Q000453:epidemiology* / Q000382:microbiology; D014397:Tuberculosis, Pulmonary / Q000453:epidemiology* / Q000382:microbiology
D000904:Antibiotics, Antitubercular; D004269:DNA, Bacterial; D007538:Isoniazid; D012293:Rifampin