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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">ivm</journal-id><journal-title-group><journal-title xml:lang="ru">Международный вестник ветеринарии</journal-title><trans-title-group xml:lang="en"><trans-title>International Journal of Veterinary Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-2419</issn><publisher><publisher-name>SpbGUVM Publishing House</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.52419/issn2072-2419.2023.4.78</article-id><article-id custom-type="elpub" pub-id-type="custom">ivm-1159</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ИНФЕКЦИОННЫЕ БОЛЕЗНИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INFECTIOUS DISEASES</subject></subj-group></article-categories><title-group><article-title>Оценка IN VITRO пробиотических свойств и бактериоциногенного  потенциала  штаммов  микроорганизмов L.  Acidophilus  13,   E.  Faecium  К-50  и  их  композиции</article-title><trans-title-group xml:lang="en"><trans-title>IN  VITRO  evaluation  of  probiotic  properties  and  bacteriocinogenic  potential of strains of microorganisms L. Acidophilus 13, E. Faecium   K-50 and their compositions</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Живодерова</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhivoderova</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>асп.  баз.  каф.  эпизоотологии  и  микробиологии</p></bio><bio xml:lang="en"><p>Asp.  base  of  the Department of Epizootology and Microbiology</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самойленко</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Samoylenko</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. ветеринар. наук, зав. кафедрой зоологии и паразитологии медико-биологического факультета</p></bio><bio xml:lang="en"><p>Candidate of Veterinary Sciences, Acting Department of Zoology  and Parasitology of  the  Faculty of Medicine and Biology</p></bio><email xlink:type="simple">viktor_samoylenko_26@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Ставропольский государственный аграрный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Stavropol State Agrarian University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГАОУ ВО «Северо-Кавказский федеральный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>North Caucasus Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>10</day><month>12</month><year>2023</year></pub-date><volume>0</volume><issue>4</issue><fpage>78</fpage><lpage>86</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Живодерова А.И., Самойленко В.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Живодерова А.И., Самойленко В.С.</copyright-holder><copyright-holder xml:lang="en">Zhivoderova A.I., Samoylenko V.S.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vetjournal.spbguvm.ru/jour/article/view/1159">https://vetjournal.spbguvm.ru/jour/article/view/1159</self-uri><abstract><p>Известно, что микробиота кишечника играет центральную роль в здоровье и потологии животного, и соответственно имеет значения для научных исследований. Микроорганизмы рода Lactobacllus имеют широкое распространение  в  природе  и  считаются  представителями  микрофлоры  макроорганизма животного. Lactobacllus  acidophilus широко  применяется  как  пробиотик,  и известна  своим  имуностимулирующим  действием,  она  заселяет  кишечник новорожденного и сопровождает животного на протяжении всей его жизни.   Enterococus faecium, так же используется как пробиотик, за счет своей высокой антагонистической активности в отношении патогенной микробиоты, а также учувствует в формировании и поддержании иммунитета. Целью данного исследования явилось оценка пробиотической составляющей L. acidophilus 13, E. faecium к-50 в условиях, имитирующих желудочно-кишечный тракт, изучение бактериоциногенного потенциала и антагонистических свойств лактобактерий и энетерококков и их композиции.  В исследовании были использованы пробиотические культуры микроорганизмов, полученные из ВКПМ НИЦ «Курчатовский институт» – ГосНИИгенетика. Было показано, что используемые нами штаммы в композиции способствовали положительной динамике их развития, и в то же время понижали содержание патогенных бактерий, таких как Escherichia coli K-12 J53, Staphylococcus aureus ATTCC 6538P(тест-штаммы). Нами были рассмотрены последние достижения в понимании бактериальных механизмов, участвующих в толерантности к желчи.  Исследование  показало  существенное  влияние  пробиотических  бактерий  и  их композиции на кислоты солей желчи и их выживание в условия повышенной кислотности. В связи с вышеизложенным определяется целесообразность комплексных исследований пробиотических микроорганизмов, для разработки средств на их основе.</p></abstract><trans-abstract xml:lang="en"><p>It is known that the gut microbiota plays a central role in the health and biology of the animal, and is therefore important for scientific research. Microorganisms of the genus Lactobacllus  are  widespread  in  nature  and are considered representatives of the microflora  of  the  macroorganism  of  the  animal. Lactobacllus acidophilus is widely used as a probiotic, and is known for its immunostimulating effect, it colonizes the intestines of a newborn  and  accompanies  the  animal throughout its life. Enterococcus faecium is also used as a probiotic, due to its high antagonistic activity against pathogenic microbiota, and also participates in the formation and maintenance of immunity. The purpose of  this  study  was  to  evaluate  the  probiotic component of L. acidophilus 13, E. faecium k-50  in  conditions  simulating  the  gastrointestinal tract, to study the bacteriocinogenic potential and antagonistic properties of lactobacilli and enterococci and their composition.  In  this  review,  we  summarize  recent advances  in  understanding  the  mechanisms involved in bacterial tolerance to bile, with particular  emphasis  on  research  contributions. In addition, the physiological and ecological role of enzymes and their importance for animal health, as well as the function of bile  acid  as  a  regulator  of metabolism,  are discussed. Samples were used in the study.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>микробиота  кишечника</kwd><kwd>иммунитет</kwd><kwd>пробиотики</kwd><kwd>лактобактерии</kwd><kwd>энтеробактерии</kwd><kwd>кислоты солей желчи</kwd><kwd>антагонистическая активность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>intestinal microbiota</kwd><kwd>immunity</kwd><kwd>probiotics</kwd><kwd>lactobacilli</kwd><kwd>enterobacteria</kwd><kwd>acids of bile salts</kwd><kwd>antagonistic activity</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Андреева А.В., Николаева О. Н., Кадырова Д. В., Алтынбеков О. М. Пробиотики для коррекции энтеробиоценоза телят / А.В. Андреева, О. Н. Николаева, Д. В. Кадырова, О. М. Алтынбеков // БОНЦ УрО РАН. – 2014. – №3. – С. 4.</mixed-citation><mixed-citation xml:lang="en">Andreeva  A.V.,  Nikolaeva  O.  N., Kadyrova D. V., Altynbekov O. M. 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