[The approbation of technique of mass spectrometry with matrix-activated laser desorption/ionization for identification of plague agent].

The study of sampling of strains of Y. pestis of main and altaic subspecies was implemented. The modern technique of identification of microorganisms was applied using MALDI-TOF mass spectrometry analysis. The evaluation of biological safety of method of sampling preparation was implemented. To supplement the identification base "BioTyper" the spectrum of typical strains of Y. pestis were obtained. The enhanced identification base was used to evaluate possibilities of application of MALDI-TOF technology for identification and taxonomic differentiation of Y. pestis from other representatives of genus of Yersinia. In the process of study a complete concordance of results of mass spectrometry identification and classic cultural method was observed. On the basis of mass spectrometry characteristic of analyzed sampling the differentiation between strains of Y. pestis of subspecies pestis and strains of subspecies altaica was implemented. The study results testify the effectiveness of application of mass spectrometry analysis for reliable interspecies and intraspecific differentiation of plague agent. The simplicity and velocity of sampling preparation and implementation of analysis and low cost of active storage allow considering the MALDI-TOF technology of mass spectrometry identification as highly perspective method for laboratory diagnostic of plague agent.