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1.
Artigo em Russo | MEDLINE | ID: mdl-27029109

RESUMO

AIM: Comparative study of antibiotics resistance and VNTR-typing of Vibrio cholerae non O1/ non O139 strains, isolated on the territory of Rostov region in 2014. MATERIALS AND METHODS: Antibioticogramms of strains were determined by serial dilution method in dense nutrient medium according to MG 4.2.2495-09 (2009). Pheno-, sero- and VNTR-typing was carried out by conventional-methods. RESULTS: The studied strains belonged to V. cholerae species, did not agglutinate with O1 and O139 sera, were atoxigenic hemolysis-positive, did not contain genes of cholera toxin and toxin-coregulating pili of adhesion, contained genes of hemagglutinin/protease, protease PrtV, collagenase, cytotonic factor Cef, outer membrane protein-OmpW, tol- and -vps-clusters, regulatory genes toxR and hapR. Antibioticogramms of the strains have shown the presence of cultures, resistant to ampicillin, ceftazidime-furazolidone, trimethoprim/sulfamethoxazole with intermediate resistance to streptomycin, kanamycin, gentamycin, amikacin, netilmicin, Approximately 20% of isolates had multiple drug resistance. Data of VNTR- and genotyping confirmed a possibility of water transmission route of the infection. CONCLUSION: Execution of monitoring of cultures from environmental samples is necessary for timely detection of genetic characteristics, antibiotics resistance.


Assuntos
Cólera/epidemiologia , Genes Bacterianos , Vibrio cholerae O139/genética , Vibrio cholerae não O1/genética , Microbiologia da Água , Antibacterianos/farmacologia , Proteínas da Membrana Bacteriana Externa/genética , Proteínas da Membrana Bacteriana Externa/metabolismo , Proteínas de Bactérias/genética , Proteínas de Bactérias/metabolismo , Cólera/tratamento farmacológico , Cólera/microbiologia , Cólera/transmissão , Toxina da Cólera/genética , Toxina da Cólera/metabolismo , Colagenases/genética , Colagenases/metabolismo , Proteínas de Ligação a DNA/genética , Proteínas de Ligação a DNA/metabolismo , Farmacorresistência Bacteriana Múltipla , Monitoramento Epidemiológico , Fímbrias Bacterianas , Deleção de Genes , Humanos , Soros Imunes/química , Metaloendopeptidases/genética , Metaloendopeptidases/metabolismo , Testes de Sensibilidade Microbiana , Peptídeo Hidrolases/genética , Peptídeo Hidrolases/metabolismo , Filogenia , Federação Russa/epidemiologia , Sorotipagem , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo , Vibrio cholerae O139/classificação , Vibrio cholerae O139/efeitos dos fármacos , Vibrio cholerae O139/isolamento & purificação , Vibrio cholerae não O1/classificação , Vibrio cholerae não O1/efeitos dos fármacos , Vibrio cholerae não O1/isolamento & purificação
2.
Artigo em Russo | MEDLINE | ID: mdl-30695385

RESUMO

AIM: Application of the authors' GIS <> for systematization of atoxigenic strains ofserogroup 01 choleravibrios (ctxAB-tcpA-, ctxAB-tcpA+), isolated from aquatic objects of the environment by pheno- and genotype. MATERIALS AND METHODS: A sample of 304 Vibrio cholerae 01 strains was studied. Isolation of 39 genes related to pathogenicity was carried out Discrimination ability of a set of genes was determined by Simpson formula. Cluster analysis was carried out by UPGMA method. RESULTS: Analysis of multi-year data on aquatic V cholerae Ο1 strains in country's subject was carried out using GIS. Apossibility of systematization ofphenotypes of the isolated strains by defined parameters was shown. An experimental program for detectior of presence/lack ofvarious genes and their combinations for genotyping was developed. Conclusion GIS was established to allow to carry out analysis of phenotypes by defined parameters, as well as implement approximate systematization of genotypes of atoxigenic strains of cholera vibrios Ο1 by optimally sufficient detection of 14 genes.


Assuntos
Genes Bacterianos , Genótipo , Sistemas de Informação Geográfica , Vibrio cholerae/classificação , Vibrio cholerae/genética , Humanos , Federação Russa , Vibrio cholerae/isolamento & purificação
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