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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">vniigis</journal-id><journal-title-group><journal-title xml:lang="ru">Российский паразитологический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Journal of Parasitology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-8435</issn><issn pub-type="epub">2541-7843</issn><publisher><publisher-name>ВНИИП – филиал ФГБНУ ФНЦ ВИЭВ РАН</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31016/1998-8435-2021-15-1-71-78</article-id><article-id custom-type="elpub" pub-id-type="custom">vniigis-718</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>БИОХИМИЯ, БИОТЕХНОЛОГИЯ И ДИАГНОСТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOCHEMISTRY, BIOTECHNOLOGY AND DIAGNOSTICS</subject></subj-group></article-categories><title-group><article-title>Разработка новых антигенов для серологической диагностики трипаносомозов животных и применение их для эпизоотологического мониторинга</article-title><trans-title-group xml:lang="en"><trans-title>Development of new antigens for serologic diagnosis of animal trypanosomosis and their use for epizootic monitoring</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>Христофис</surname><given-names>Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Georgiou</surname><given-names>Ch.</given-names></name></name-alternatives><bio xml:lang="ru"><p>109428, Москва, Рязанский проспект, 24, кор. 1</p></bio><bio xml:lang="en"><p>24 Ryazansky prospect, Bldg. 1, Moscow, 109428</p></bio><email xlink:type="simple">Chgeorgiou@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ ФНЦ Всероссийский научно-исследовательский институт экспериментальной ветеринарии им. К. И. Скрябина и Я. Р. Коваленко РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Budget Scientific Institution “Federal Scientific Centre VIEV RAS”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>11</day><month>03</month><year>2021</year></pub-date><volume>15</volume><issue>1</issue><fpage>71</fpage><lpage>78</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Христофис Г., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Христофис Г.</copyright-holder><copyright-holder xml:lang="en">Georgiou C.</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://vniigis.elpub.ru/jour/article/view/718">https://vniigis.elpub.ru/jour/article/view/718</self-uri><abstract><p>Цель исследований – разработка способа получения эритроцитарных ДНК-содержащих и не содержащих антигенов Trypanosoma equiperdum и T. evansi, которые в дальнейшем могут быть использованы в серологических реакциях для дифференциации этих видов трипаносом.</p><sec><title>Материалы и методы</title><p>Материалы и методы. Исследования выполняли в лаборатории протозоологии и Вышневолоцком филиале ФГБНУ ФНЦ ВИЭВ РАН, а также в животноводческих хозяйствах Российской Федерации и других стран с использованием клинических, микроскопических, гематологических, паразитологических, молекулярно-биологических и серологических методов.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. Проведенные впервые исследования показали, что можно использовать эритроцитарные ДНК-содержащие антигены T. equiperdum и T. evansi, полученные после 3-кратного введения мышам и кроликам смеси из трипаносомного антигена с добавлением 1,0 мл адьюванта (гидрогись алюминия) и обескровливания животных после 25–30 сут. Полученный осадок использовали как антиген для серологических исследований. Опыты показали, что кровь для приготовления позитивной сыворотки можно брать, когда антитела в РДСК находятся в титрах 1:20, в РНГА и ИФА - не ниже 1:400, отрицательной – когда сыворотка крови лошадей отрицательно реагирует в РДСК, РНГА и ИФА с антигенами T. equiperdum и T. evansi. Приготовленные нами тест-системы РДСК, РНГА и ИФА с антигенами, содержащими и не содержащими ДНК T. equiperdum и T. еvansi, привели к созданию универсальной тест-системы (РНГА) для дифференциации T. equiperdum от T. evansi.</p></sec></abstract><trans-abstract xml:lang="en"><p>The purpose of the research is developing a method for obtaining erythrocyte antigens containing and not containing Trypanosoma equiperdum and T. evansi DNA, which can later be used in serological reactions to differentiate these types of Trypanosoma.</p><sec><title>Materials and methods</title><p>Materials and methods. The studies were conducted in the Protozoology Laboratory and the Vyshnevolotsk Branch of the Federal State Budget Scientific Institution “Federal Scientific Centre VIEV RAS”, as well as livestock farms of the Russian Federation and other countries using clinical, microscopic, hematological, parasitological, biomolecular and serological methods.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. Studies carried out for the first time have shown that it is possible to use erythrocyte antigens containing the T. equiperdum and T. evansi DNA obtained after 3-fold administration to mice and rabbits of a mixture of trypanosomal antigen with addition of 1.0 ml of an adjuvant (aluminum hydroxide), and bleeding of animals at 25 to 30 days. The formed precipitate was used as an antigen for serological tests. Experiments have shown that blood for preparation of positive serum can be taken when antibodies are in titers of 1:20 in the Prolonged Complement Fixation Test, and at least 1:400 in the Indirect Hemagglutination Test and ELISA, and for negative serum when horse blood serum reacts negatively with antigens of T. equiperdum and T. evansi in the Prolonged Complement Fixation Test, Indirect Hemagglutination Test and ELISA. The test systems of the Prolonged Complement Fixation Test, Indirect Hemagglutination Test and ELISA prepared by us with antigens containing and not containing T. equiperdum and T. evansi DNA resulted in creating a universal test system (Indirect Hemagglutination Test) for differentiating T. equiperdum from T. evansi.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>протозойные болезни</kwd><kwd>трипаносомоз</kwd><kwd>Trypanosoma evansi</kwd><kwd>T. equiperdum</kwd><kwd>антиген</kwd><kwd>экзоантиген</kwd></kwd-group><kwd-group xml:lang="en"><kwd>protozoal diseases</kwd><kwd>trypanosomosis</kwd><kwd>Trypanosoma evansi</kwd><kwd>T. equiperdum</kwd><kwd>antigen</kwd><kwd>exoantigen</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">Василевич Ф. И., Георгиу Х., Белименко В. В., Гулюкин М. И. 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