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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="brief-report" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Journal of microbiology, epidemiology and immunobiology</journal-id><journal-title-group><journal-title xml:lang="en">Journal of microbiology, epidemiology and immunobiology</journal-title><trans-title-group xml:lang="ru"><trans-title>Журнал микробиологии, эпидемиологии и иммунобиологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0372-9311</issn><issn publication-format="electronic">2686-7613</issn><publisher><publisher-name xml:lang="en">Central Research Institute for Epidemiology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">13616</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Short Communication</subject></subj-group></article-categories><title-group><article-title xml:lang="en">EXCRETION OF EXTRACELLULAR MEMBRANE NANOVESICLES BY AEROMONAS</article-title><trans-title-group xml:lang="ru"><trans-title>ВЫДЕЛЕНИЕ ВНЕКЛЕТОЧНЫХ МЕМБРАННЫХ НАНОВЕЗИКУЛ АЭРОМОНАДАМИ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lusta</surname><given-names>K. A</given-names></name><name xml:lang="ru"><surname>Луста</surname><given-names>К. А</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kozlovsky</surname><given-names>Yu. E</given-names></name><name xml:lang="ru"><surname>Козловский</surname><given-names>Ю. Е</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Institute of Human Morphology</institution></aff><aff><institution xml:lang="ru">НИИ морфологии человека</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2011-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2011</year></pub-date><volume>88</volume><issue>6</issue><issue-title xml:lang="en">NO6 (2011)</issue-title><issue-title xml:lang="ru">№6 (2011)</issue-title><fpage>77</fpage><lpage>79</lpage><history><date date-type="received" iso-8601-date="2023-06-09"><day>09</day><month>06</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2011, Lusta K.A., Kozlovsky Y.E.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2011, Луста К.А., Козловский Ю.Е.</copyright-statement><copyright-year>2011</copyright-year><copyright-holder xml:lang="en">Lusta K.A., Kozlovsky Y.E.</copyright-holder><copyright-holder xml:lang="ru">Луста К.А., Козловский Ю.Е.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://microbiol.crie.ru/jour/article/view/13616">https://microbiol.crie.ru/jour/article/view/13616</self-uri><abstract xml:lang="en"><p>Aim. Study of extracellular membrane nanovesicles production by Aeromonas hydrophila and Aeromonas salmonicida bacteria on a subcellular level. Materials and methods. 4 strains ofA.hydrophila: 342-1, Е 8-8, Н 336 and Н 1-6-05 and 1 strain of A.salmonicida А-450 as well as intact Wistar line rats were used. Methods of transmission electron microscopy: ultrathin sectioning and negative contrasting were used. Results. A.hydrophila and A.salmonicida bacteria produced in pure cultures excrete into the environment extracellular membrane nanovesicles. The size of these vesicles varies from 20 to 200 nm in diameter. The process of gemmation from bacterial cell and possibility ofobtaining isolated membrane nanovesicles preparations is shown. These vesicles are detected in ultrathin sections of apical surface of intact rat intestine among accumulations ofparietal microorganisms that colonize mucous membrane. Extracellular membrane nanovesicles excreted by aeromonas are analogous by size and ultrastructure to vesicles of other species of gram-negative bacteria described in the literature. Conclusion. During production of A.hydrophila and A.salmonicida bacteria in vitro nanovesicles are formed from the outer membranes of the cells and excreted into the environment, the nanovesicles are similar to those detected in ultrathin sections of the surface of intestine of rats among accumulations of parietal microorganisms and in glycocalix between epitheliocyte microvilli.</p></abstract><trans-abstract xml:lang="ru"><p>Цель. Исследование продукции внеклеточных мембранных нановезикул бактериями Aeromonas hydrophila и Aeromonas salmonicida на субклеточном уровне. Материалы и методы. Использованы 4 штамма A.hydrophila: 342-1, Е 8-8, Н 336 и Н 1-6-05 и 1 штамм A.salmonicida А-450, а также интактные крысы линии Вистар. Применяли методы электронной микроскопии: ультратонкие срезы и негативное контрастирование. Результаты. Показано, что бактерии A.hydrophila и A. salmonicida, выращиваемые в чистых культурах, выделяют в окружающую среду внеклеточные мембранные нановезикулы. Размеры таких везикул варьируют от 20 до 200 нм в диаметре. Показан процесс отпочковывания от бактериальной клетки и возможность получения препаратов изолированных мембранных нановезикул. Подобные везикулы выявлены на ультратонких срезах апикальной поверхности кишечника интактных крыс среди скоплений пристеночных микроорганизмов, колонизирующих слизистую оболочку. Внеклеточные мембранные нановезикулы, выделяемые аэромонадами, по размерам и ультраструктуре аналогичны везикулам других видов грамотрицательных бактерий, описанных в литературе. Заключение. При выращивании бактерий A.hydrophila и A.salmonicida in vitro из внешних мембран клеток образуются нановезикулы, выделяемые во внешнюю среду и подобные таковым, обнаруживаемым на ультратонких срезах поверхности кишечника крыс среди скоплений пристеночных микроорганизмов и в гликокаликсе, между микроворсинками эпителиоцитов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Aeromonas hydrophila</kwd><kwd>A.salmonicida</kwd><kwd>extracellular membrane nanovesicles</kwd><kwd>Aeromonas hydrophila</kwd><kwd>A.salmonicida</kwd><kwd>electron microscopy</kwd><kwd>mucosal microflora of rat intestine</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>внеклеточные мембранные нановезикулы</kwd><kwd>электронная микроскопия</kwd><kwd>мукозная микрофлора кишечника крыс</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Бондаренко В.М., Вертиев Ю.В. Факторы патогенности и токсигенности микроорганизмов. 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