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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Annals of Clinical and Experimental Neurology</journal-id><journal-title-group><journal-title xml:lang="en">Annals of Clinical and Experimental Neurology</journal-title><trans-title-group xml:lang="ru"><trans-title>Анналы клинической и экспериментальной неврологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-5473</issn><issn publication-format="electronic">2409-2533</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">638</article-id><article-id pub-id-type="doi">10.25692/ACEN.2020.1.7</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Unknown</subject></subj-group></article-categories><title-group><article-title xml:lang="en">The use of a pharmabiotic based on the Lactobacillus fermentum U-21 strain to modulate the neurodegenerative process in an experimental model of Parkinson disease</article-title><trans-title-group xml:lang="ru"><trans-title>Использование фармабиотика на основе штамма Lactobacillus fermentum U-21 с целью модуляции нейродегенеративного процесса при экспериментальном паркинсонизме</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Danilenko</surname><given-names>Valery N.</given-names></name><name xml:lang="ru"><surname>Даниленко</surname><given-names>Валерий Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alla_stav@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Stavrovskaya</surname><given-names>Alla V.</given-names></name><name xml:lang="ru"><surname>Ставровская</surname><given-names>Алла Вадимовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alla_stav@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Voronkov</surname><given-names>Dmitriy N.</given-names></name><name xml:lang="ru"><surname>Воронков</surname><given-names>Дмитрий Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alla_stav@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gushchina</surname><given-names>Anastasiya S.</given-names></name><name xml:lang="ru"><surname>Гущина</surname><given-names>Анастасия Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alla_stav@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Marsova</surname><given-names>Maria V.</given-names></name><name xml:lang="ru"><surname>Марсова</surname><given-names>Мария Викторовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alla_stav@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yamshchikova</surname><given-names>Nina G.</given-names></name><name xml:lang="ru"><surname>Ямщикова</surname><given-names>Нина Гавриловна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alla_stav@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ol'shansky</surname><given-names>Аrtyem S.</given-names></name><name xml:lang="ru"><surname>Ольшанский</surname><given-names>Артем Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alla_stav@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ivanov</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Иванов</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alla_stav@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Illarioshkin</surname><given-names>Sergey N.</given-names></name><name xml:lang="ru"><surname>Иллариошкин</surname><given-names>Сергей Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alla_stav@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Vavilov Institute of General Genetics, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">ФГБУН «Институт общей генетики им. Н.И. Вавилова» РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Research Center of Neurology</institution></aff><aff><institution xml:lang="ru">ФГБНУ «Научный центр неврологии»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-03-26" publication-format="electronic"><day>26</day><month>03</month><year>2020</year></pub-date><volume>14</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>62</fpage><lpage>69</lpage><history><date date-type="received" iso-8601-date="2020-03-25"><day>25</day><month>03</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Danilenko V.N., Stavrovskaya A.V., Voronkov D.N., Gushchina A.S., Marsova M.V., Yamshchikova N.G., Ol’shansky А.S., Ivanov M.V., Illarioshkin S.N.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Danilenko V.N., Stavrovskaya A.V., Voronkov D.N., Gushchina A.S., Marsova M.V., Yamshchikova N.G., Ol’shansky А.S., Ivanov M.V., Illarioshkin S.N.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Danilenko V.N., Stavrovskaya A.V., Voronkov D.N., Gushchina A.S., Marsova M.V., Yamshchikova N.G., Ol’shansky А.S., Ivanov M.V., Illarioshkin S.N.</copyright-holder><copyright-holder xml:lang="ru">Danilenko V.N., Stavrovskaya A.V., Voronkov D.N., Gushchina A.S., Marsova M.V., Yamshchikova N.G., Ol’shansky А.S., Ivanov M.V., Illarioshkin S.N.</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://annaly-nevrologii.com/pathID/article/view/638">https://annaly-nevrologii.com/pathID/article/view/638</self-uri><abstract xml:lang="en"><p><bold>Introduction. </bold>Experimental and clinical studies have repeatedly shown the interplay between the intestinal microbiota properties and the nervous system, with a clear link established between changes in microbiota and the development of a neurodegenerative process. It is thought that inflammation and microbiota disturbances provoke the spread of pathological forms of a-synuclein in the nervous system, which is recognized as the main cause of neurodegeneration in Parkinson disease (PD).</p> <p><bold>Aim</bold> of the study: to identify the effect of a pharmabiotic based on a<italic> Lactobacillus fermentum </italic>U-21 strain in Wistar rats with paraquat-induced parkinsonism.</p> <p><bold>Materials and methods.</bold> Two groups of animals received intra-abdominal paraquat injections (8 doses of 10 mg/kg, every second day for 15 days) and then received orally either a 0.9% NaCl solution, or the U-21 preparation daily for 15 days. The control groups received 0.9% NaCl injections and either a U-21 preparation, or a 0.9% NaCl solution orally under the same regimen. Motor activity was tested in the open field and narrowing beam walking tests. Changes in tyrosine hydroxylase positive enteric plexus fibers and the in quantity of intestinal villi goblet cells were measured morphologically.</p> <p><bold>Results. </bold>Paraquat administration led to a gradual animal death, however, administration of the U-21 increased their survival rate and preserved their motor activity at the level of the control rats. Oral administration of the pharmabiotic only did not alter the animals’ motor activity. Paraquat reduced density of the tyrosine hydroxylase positive fibers and increased the number of goblet cells, while the study drug partially diminished the changes induced by paraquat.</p> <p><bold>Conclusion.</bold> The U-21 preparation demonstrated high biological activity in the neurotoxin-induced model of PD, which justifies further, extended studies of its effects.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение. </bold>В экспериментальных и клинических исследованиях неоднократно показано взаимное влияние состояния кишечной микробиоты и нервной системы, при этом выявлена четкая связь изменений микробиоты с развитием нейродегенеративного процесса. Предполагается, что нарушение микрофлоры и воспаление провоцируют распространение патологических форм α-синуклеина в нервной системе, что признается основной причиной нейродегенерации при болезни Паркинсона.</p> <p><bold>Цель </bold>исследования: выявление эффектов препарата-фармабиотика на основе штамма<italic> Lactobacil</italic><italic>l</italic><italic>us fermentum </italic>U-21 при введении крысам Вистар индуктора паркинсонизма — параквата.</p> <p><bold>Материал и методы.</bold> Две группы животных на фоне внутрибрюшинных инъекций параквата (8 доз по 10 мг/кг, через день в течение 15 дней) получали перорально 0,9% NaCl или препарат U-21 ежедневно в течение 15 дней, а контрольные группы получали инъекции 0,9% NaCl и перорально U-21 или 0,9% NaCl в том же режиме. Двигательную активность исследовали в тестах «открытое поле» и «сужающаяся дорожка». Морфологически оценивали изменения позитивных к тирозингидроксилазе волокон энтеральных сплетений и количество бокаловидных клеток ворсин тонкого кишечника.</p> <p><bold>Результаты. </bold>Введение параквата приводило к прогрессирующей гибели животных, но применение U-21 увеличивало их выживаемость и сохраняло двигательную активность на уровне контрольных крыс. Пероральное введение только фармабиотика не влияло на двигательную активность животных. Паракват снижал плотность позитивных к тирозингидроксилазе волокон и увеличивал число бокаловидных клеток, а исследуемый препарат частично ослаблял изменения, выявляемые под действием параквата.</p> <p><bold>Заключение.</bold> Препарат U-21 показал высокую биологическую активность на нейротоксической модели паркинсонизма, что обосновывает дальнейшие расширенные исследования его эффектов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>enteric nervous system</kwd><kwd>Parkinson disease</kwd><kwd>probiotic</kwd><kwd>animal models</kwd><kwd>paraquat</kwd><kwd>Lactobacillus</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>энтеральная нервная система</kwd><kwd>паркинсонизм</kwd><kwd>пробиотик</kwd><kwd>модели на животных</kwd><kwd>паракват</kwd><kwd>Lactobacillus</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Cacabelos R. Parkinson’s disease: from pathogenesis to pharmacogenomics. 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