[The mass-spectrometric analysis of MALDI-TOF in identification and typing of strains of comma bacillus].

The data base “Protein profiles of mass-specters of representatives of species of Vibrio cholerae for program MALDI Biotyper” was used to implement typing of strains of comma bacillus isolated at the territory of the Russian Federation in 2010-2012. Also, analysis of degree of similarity and differences among constant ribosomal proteins was implemented. According the results of MALDI-TOF mass-spectrometry strains of V.cholerae were grouped in two distinct clusters. The first cluster included all epidemically dangerous strains isolated from people arrived in Moscow from India 2010-2012. The second cluster included atoxigenic vibrio with no relation to serogroups O1/O139 isolated from residents of Taganrog in 2011. The analysis of main specters of all collection permitted to identify taxon - specific components distinguishing strains of non-O1/non-O139 from strains of V.cholerae El Tor. Hence, the developed data base of proteom portraits of V.cholerae permits identifying, studying and to typing of agents of cholera and other representatives of V.cholerae species detecting their phylogenetic affinity that is ultimately useful for establishing origin of strains isolated from objects of environment and epidemiological decoding of episodes of disease.