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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">veterinary</journal-id><journal-title-group><journal-title xml:lang="ru">Ветеринария сегодня</journal-title><trans-title-group xml:lang="en"><trans-title>Veterinary Science Today</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2304-196X</issn><issn pub-type="epub">2658-6959</issn><publisher><publisher-name>"Veinard"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29326/2304-196X-2024-13-2-183-188</article-id><article-id custom-type="elpub" pub-id-type="custom">veterinary-818</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>ОРИГИНАЛЬНЫЕ СТАТЬИ | БИОТЕХНОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES | BIOTECHNOLOGY</subject></subj-group></article-categories><title-group><article-title>Изучение иммунотерапевтических свойств конъюгата антигенов БЦЖ с бетулоновой кислотой на морских свинках, инфицированных Mycobacterium scrofulaceum</article-title><trans-title-group xml:lang="en"><trans-title>Studying immunotherapeutic properties of the conjugate based on BCG antigens with betulonic acid in guinea pigs infected with Mycobacterium scrofulaceum</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5537-219X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кошкин</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Koshkin</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кошкин Иван Николаевич, канд. вет. наук, старший научный сотрудник лаборатории эпизоотологии и мер борьбы с туберкулезом отдела ветеринарии</p><p>пр. Королева, 26, г. Омск, 644012 </p></bio><bio xml:lang="en"><p>Ivan N. Koshkin, Cand. Sci. (Veterinary Medicine), Senior Researcher, Laboratory of Epizootology and Tuberculosis Control, Department of Veterinary Medicine</p><p>26 Koroleva ave., Omsk 644012</p></bio><email xlink:type="simple">in.koshkin@omgau.org</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8351-2818</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Власенко</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Vlasenko</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Власенко Василий Сергеевич, д-р биол. наук, профессор, главный научный сотрудник лаборатории эпизоотологии и мер борьбы с туберкулезом отдела ветеринарии</p><p>пр. Королева, 26, г. Омск, 644012 </p></bio><bio xml:lang="en"><p>Vasily S. Vlasenko, Dr. Sci. (Biology), Professor, Chief Researcher, Laboratory of Epizootology and Tuberculosis Control, Department of Veterinary Medicine</p><p>26 Koroleva ave., Omsk 644012</p></bio><email xlink:type="simple">vvs-76@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0390-7121</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Денгис</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dengis</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Денгис Наталья Александровна, канд. биол. наук, ведущий научный сотрудник лаборатории эпизоотологии и мер борьбы с туберкулезом отдела ветеринарии</p><p>пр. Королева, 26, г. Омск, 644012 </p></bio><bio xml:lang="en"><p>Natalia A. Dengis, Cand. Sci. (Biology), Leading Researcher, Laboratory of Epizootology and Tuberculosis Control, Department of Veterinary Medicine</p><p>26 Koroleva ave., Omsk 644012 </p></bio><email xlink:type="simple">svir2007@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Омский аграрный научный центр» (ФГБНУ «Омский АНЦ»)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Omsk Agrarian Scientific Center</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>13</day><month>06</month><year>2024</year></pub-date><volume>13</volume><issue>2</issue><fpage>183</fpage><lpage>188</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кошкин И.Н., Власенко В.С., Денгис Н.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Кошкин И.Н., Власенко В.С., Денгис Н.А.</copyright-holder><copyright-holder xml:lang="en">Koshkin I.N., Vlasenko V.S., Dengis N.A.</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://veterinary.arriah.ru/jour/article/view/818">https://veterinary.arriah.ru/jour/article/view/818</self-uri><abstract><p>В настоящей работе представлены результаты изучения иммунотерапевтических свойств препарата из антигенного комплекса БЦЖ, конъюгированного с бетулоновой кислотой, после экспериментального заражения морских свинок культурой Mycobacterium scrofulaceum, относящейся к нетуберкулезным микобактериям II типа по классификации Раньона. С этой целью проведен опыт на 15 морских свинках, из которых было сформировано 3 группы. Животным 1-й и 2-й групп (n = 10) подкожно инокулировали Mycobacterium scrofulaceum в дозе 5 мг, после чего особям 2-й группы (n = 5) через 14 сут подкожно вводили конъюгат антигенов БЦЖ с бетулоновой кислотой в дозе 500 мкг/мл белка. Пять интактных особей служили контролем. При проведении экспериментов оценивали функциональное состояние бактерицидных систем нейтрофилов, а также выполняли патогистологические исследования паховых лимфатических узлов. В результате было установлено, что сенсибилизация морских свинок Mycobacterium scrofulaceum активизирует деятельность катионных белков и миелопероксидазы нейтрофилов, и по мере выведения микобактерий из организма к 42-м сут от начала эксперимента их концентрация снижалась до уровня контрольной группы. Введение препарата индуцировало более выраженное усиление внутриклеточного метаболизма фагоцитов в течение всего срока наблюдения, способствуя элиминации нетуберкулезных микобактерий из организма животных уже на 7-е сут после обработки конъюгатом, что подтверждалось отсутствием микобактериального антигена в мазках крови при исследовании в реакции непрямой иммунофлуоресценции, а также патогистологическими изменениями в паховых лимфатических узлах, которые выражались уменьшением выраженных центров размножения в лимфатических фолликулах.</p></abstract><trans-abstract xml:lang="en"><p>The paper reports on the research into the immunotherapeutic properties of a conjugate based on BCG antigens with betulonic acid after experimental infection of guinea pigs with Mycobacterium scrofulaceum culture, belonging to nontuberculosis mycobacteria type II according to the Runyon classification. Fifteen guinea pigs were used for the experimental purposes, divided into 3 groups. Mycobacterium scrofulaceum was subcutaneously injected into animals of Groups 1 and 2 (n = 10) at a dose of 5 mg. Fourteen days later, a conjugate based on BCG antigens with betulonic acid was subcutaneously injected into animals of Group 2 (n = 5) at a dose of 500 µg/mL of protein. Five intact animals were used as controls. During the experiment, neutrophil bactericidal activity was assessed, and histopathological examination of inguinal lymph nodes was done. The experiment showed that the inoculation of Mycobacterium scrofulaceum into guinea pigs activates cationic proteins and neutrophil myeloperoxidase, and on experiment day 42 (preceded by mycobacteria withdrawal from the body) their concentration reduced to the level of the control group. The vaccine administration induced a more active intracellular phagocyte metabolism during the entire observation period, which resulted in the elimination of nontuberculosis mycobacteria in animals as early as day 7 after treatment with the conjugate. The elimination was confirmed by the absence of mycobacterial antigen in blood smears tested in indirect immunofluorescence, as well as by histopathological changes in inguinal lymph nodes demonstrated as a reduction of germinal centers within lymphoid follicles.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нетуберкулезные микобактерии</kwd><kwd>морские свинки</kwd><kwd>бацилла Кальмета – Герена (БЦЖ)</kwd><kwd>бетулоновая кислота</kwd><kwd>нейтрофилы</kwd><kwd>паховые лимфатические узлы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>non-tuberculosis mycobacteria</kwd><kwd>guinea pigs</kwd><kwd>Bacillus Calmette-Guerin (BCG)</kwd><kwd>betulonic acid</kwd><kwd>neutrophils</kwd><kwd>inguinal lymph nodes</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Статья подготовлена при финансовой поддержке Министерства образования и науки РФ в рамках проведения научно-исследовательских работ по теме FNUN-2022-0035 «Разработка новых и усовершенствование существующих средств и методов диагностики и профилактики социальнозначимых инфекций с целью сохранения эпизоотического благополучия и получения качественной и безопасной продукции с учетом генетических баз данных и особенностей возбудителей, направлений и селекции животноводства, технологий кормления, экономических и географических условий». Авторы выражают благодарность профессору, доктору химических наук И. В. Кулакову за предоставление бетулоновой кислоты, синтезированной на кафедре органической и экологической химии Института химии ФГАОУ ВО «Тюменский государственный университет».</funding-statement><funding-statement xml:lang="en">The article was prepared with the financial support from the Ministry of Education and Science of the Russian Federation as part of the research project FNUN-2022-0035 “Developing new and improving existing tools and methods for diagnosis and prevention of socially significant infections in order to ensure freedom from epizooties and produce high-quality and safe products, taking into account genetic databases, characteristics of pathogens, trends in livestock breeding, feeding technologies, economic and geographical conditions”. The authors express their appreciation to Dr. Sci. (Chemisty), professor I. V. 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