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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">biob</journal-id><journal-title-group><journal-title xml:lang="ru">Биобезопасность и Биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Biosafety and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2707-7241</issn><issn pub-type="epub">2957-5702</issn><publisher><publisher-name>Научно-исследовательский институт проблем биологической безопасности</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.58318/2957-5702-2022-9-19-23</article-id><article-id custom-type="elpub" pub-id-type="custom">biob-14</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>БИОЛОГИЧЕСКАЯ БЕЗОПАСНОСТЬ И БИОЗАЩИТА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOLOGICAL SAFETY AND BIOSECURITY</subject></subj-group></article-categories><title-group><article-title>АКТИВНОСТЬ ТРИПАНОСОМНОГО АНТИГЕНА В РАЗЛИЧНЫХ СЕРОЛОГИЧЕСКИХ РЕАКЦИЯ</article-title><trans-title-group xml:lang="en"><trans-title>ACTIVITY OF TRIPANOSOMAL ANTIGEN IN VARIOUS  SEROLOGICAL REACTIONS</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>Ильгекбаева</surname><given-names>Г. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilgekbayeva</surname><given-names>G. D.</given-names></name></name-alternatives><bio xml:lang="en"><p> *, T.A. Usenova , K.N. Kudaibergenova</p></bio><email xlink:type="simple">gulnaz.ilgekbayeva@kaznaru.edu.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Усенова</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Usenova</surname><given-names>T. A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кудайбергенова</surname><given-names>К. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudaibergenova</surname><given-names>K. N.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казахский национальный аграрный исследовательский университет</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>Kazakh National Agrarian Research University</institution><country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>27</day><month>03</month><year>2022</year></pub-date><volume>0</volume><issue>9</issue><fpage>19</fpage><lpage>23</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ильгекбаева Г.Д., Усенова Т.А., Кудайбергенова К.Н., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Ильгекбаева Г.Д., Усенова Т.А., Кудайбергенова К.Н.</copyright-holder><copyright-holder xml:lang="en">Ilgekbayeva G.D., Usenova T.A., Kudaibergenova K.N.</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://journal.biosafety.kz/jour/article/view/14">https://journal.biosafety.kz/jour/article/view/14</self-uri><abstract><p>случная болезнь лошадей диагностируется при помощи серологических тестов, таких как классическая реакция связывания комплемента (РСК), реакция связывания комплемента лошади (РСКЛ). Нами в последнее время разработана длительный вариант РСКЛ – реакция длительного связывания комплемента лошади (РДСКЛ). Основным компонентом, который непосредственно влияет на чувствительность вышеуказанных тестов, является трипаносомный антиген. От правильного определения рабочего титра последнего зависит четкость постановки и ход реакций. Целью нашей работы явилось определить рабочий титр трипаносомного антигена в РСК, РСКЛ и РДСКЛ. Рабочий титр антигена для каждой серологической реакций остается стабильным после его определения. Данный показатель определяли шахматным методом титрования антигена и позитивной сыворотки. Нами установлено рабочий титр антигена в антигенной единице (АЕ). При этом мы брали 1,5 АЕ за рабочий титр трипаносомного антигена. Она была 1:20 в РСК, 1:100 в РСКЛ и 1:150 в РДСКЛ. Именно эти разведения антигена мы будем использовать при постановке вышеуказанных тестов.</p></abstract><trans-abstract xml:lang="en"><p>dourine is diagnosed using serological tests such as the classical complement fixation test (CFT), the horse complement fixation test (HCFT). We have recently developed a long-term variant of HCFT - horse complement long fixation (HCLFT). The main component that directly affects the sensitivity of the above tests is the trypanosomal antigen. From the correct definition of the working titer of the latter depends on the clarity of setting and the course of reactions. The aim of our work was to determine the working titer of the trypanosomal antigen in CFT, HCFT and HCLFT. The working antigen titer for each serological reaction remains stable after its determination. This indicator was determined by the checkerboard method of titration of the antigen and positive serum. We have established the working titer of the antigen in the antigenic unit (AU). At the same time, we took 1,5 AU for the working titer of the trypanosome antigen. It was 1:20 in CFT, 1:100 in HCFT and 1:150 in HCLFT. It is these dilutions of the antigen that we will use when setting up the above tests.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>случная болезнь</kwd><kwd>антиген</kwd><kwd>антитело</kwd><kwd>титр</kwd><kwd>реакция связывания комплемента лошади.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>dourine</kwd><kwd>antigen</kwd><kwd>antibody</kwd><kwd>titer</kwd><kwd>horse complement fixation test</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">Guidelines for Diagnostic tests and vaccines for terrestrial animals - OIE. Diseases included in the OIE list and other diseases of importance for international trade. 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