Выполнена комплексная микробиологическая, молекулярно-генетическая и масс-спектрометри ческая идентификация штамма Yersinia pestis основного подвида, который был изолирован в июне 2012 г. впервые за все время обследования Алтайского горного природного очага чумы. Установлена высокая универсальная вирулентность этого штамма. Результаты плазмидного скрининга, мультилокусного VNTR-и масс-спектрометрического анализов продемонстрировали, что этот штамм наиболее близок к варианту возбудителя чумы, циркулирующему на территории природного очага Хуух-Сэрх-Мунх-Хаирхан, Баян-Ульгийский аймак, Монголия. Ключевые слова: возбудитель чумы, основной подвид, Алтайский горный природный очаг чумы, Yersinia pestis, вирулентность, плазмидный скрининг, мультилокусный VNTR-анализ, масс-спектрометрический анализ.

Morphological changes in the immunocompetent organs of white mice with experimental plague infection manifested in activation of the immune response of different degree and pathological process of different severity that depended on the plasmid composition of Y. pestis. Widening of the T-dependent zones in the immune organs of white mice infected with isogenic strains of Y. pestis with different plasmid composition attests to activation of cellular immunity. Our findings allow considering Y. pestis subsp. altaica I-2948/3, Y. pestis subsp. pestis I-3479 and Y. pestis subsp. pestis I-3480 as promising candidates for vaccine strains.

The effects of nanostructurized composites argentogalactomannan and argento-poly-1-vinyl-1,2,4-triasole on the kinetics of T cell maturation in the thymus of albino mice were studied. These nanocomposites stimulated the formation of CD3CD4CD8 and CD3CD4CD8 cells from CD3CD4CD8 cells, the effect of argentogalactomannan was more potent. The efficiency of these compounds as agents improving the defense potential deserves special studies.

Live vaccines are used for specific brucellosis prophylaxis in the Russian Federation. These vaccines in addition to a number of  positive properties have some limitations including high  agglutinogenicity, reactogenicity, sensitizing activity. In this  connection, the development of subunit vaccines without adverse  reactions is a perspective direction in modern vaccinology. Complex  morphological research of the adrenal glands and comparative  analysis of peripheral blood (leukogram, leukocytic index and index  of allergization) of white mice immunized with thermoextracts (ТE)  of Brucella abortus I-206 in L- and S-form and inactivated vaccine B.  abortus 19 ВА were conducted. It was shown that ТE unlike B.  abortus 19 ВА caused minor alterations in peripheral blood of the  experimental animals in early periods of observation (increase of allergization index, changes in leukogram) with the subsequent  levelling to the values in control. Expositions of the adrenal gland  zoning were determined and cellular structure was estimated in  consideration of morphometry. Changes in architectonics of the mice  organ immunized with B. abortus 19 ВА were revealed. These alterations could indicate the stress-reaction development. In  case of ТE application the given changes were insignificant and were  developed in early periods. The revealed morphological changes in  adrenal glands of laboratory animals permit to prove the necessity of  realization the further experimental researches to ТE application  as the components for development of a subcellular brucellosis vaccine.