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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">10.31016/1998-8435-2023-17-3-386-399</article-id><article-id custom-type="elpub" pub-id-type="custom">vniigis-1075</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>ФАРМАКОЛОГИЯ, ТОКСИКОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHARMACOLOGY, TOXICOLOGY</subject></subj-group></article-categories><title-group><article-title>Биотрансформация фенбендазола в организме овец после введения твердой дисперсии фенбендазола, полученной по механохимической технологии с арабиногалактаном</article-title><trans-title-group xml:lang="en"><trans-title>Biotransformation of fenbendazole in sheep after administration of fenbendazole solid dispersion prepared by mechanochemical technique with arabinogalactane</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5165-0706</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Архипов</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Arkhipov</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Архипов Иван Алексеевич, доктор ветеринарных наук, профессор </p><p>117218, Москва, ул. Б. Черемушкинская, 28</p></bio><bio xml:lang="en"><p>Arkhipov Ivan A., Doctor of Veterinary Sciences, Professor</p><p>28, Bolshaya Cheremushkinskaya st., Moscow, 117218</p></bio><email xlink:type="simple">arkhipovhelm@mail.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/0000-0002-2103-8468</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Арисов</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Arisov</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Арисов Михаил Владимирович, доктор ветеринарных наук, профессор РАН </p><p>117218, Москва, ул. Б. Черемушкинская, 28</p></bio><bio xml:lang="en"><p>Arisov Michail V., Doctor of Veterinary Sciences, RAS Professor </p><p>28, Bolshaya Cheremushkinskaya st., Moscow, 117218</p></bio><email xlink:type="simple">director@vniigis.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/0000-0002-4736-5934</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Халиков</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Khalikov</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Халиков Салават Самадович, доктор технических наук </p><p>119991, Москва, ул. Вавилова, 28</p></bio><bio xml:lang="en"><p>Khalikov Salavat S., Doctor of Engineering Sciences </p><p>28, Vavilova st., Moscow, 119991</p></bio><email xlink:type="simple">salavatkhalikov@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6688-5540</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кочетков</surname><given-names>П. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kochetkov</surname><given-names>P. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кочетков Павел Павлович </p><p>117218, Москва, ул. Б. Черемушкинская, 28</p></bio><bio xml:lang="en"><p>Kochetkov Pavel P. </p><p>28, Bolshaya Cheremushkinskaya st., Moscow, 117218</p></bio><email xlink:type="simple">pkochetkov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Всероссийский научно-исследовательский институт фундаментальной и прикладной паразитологии животных и растений – филиал Федерального государственного бюджетного научного учреждения «Федеральный научный центр – Всероссийский научно-исследовательский институт экспериментальной ветеринарии имени К. И. Скрябина и Я. Р. Коваленко Российской академии наук» (ВНИИП – филиал ФГБНУ ФНЦ ВИЭВ РАН)<country>Россия</country></aff><aff xml:lang="en">All-Russian Scientific Research Institute for Fundamental and Applied Parasitology of Animals and Plant – a branch of the Federal State Budget Scientific Institution “Federal Scientific Centre VIEV” (VNIIP – FSC VIEV)<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Институт элементоорганических соединений им. А. Н. Несмеянова РАН<country>Россия</country></aff><aff xml:lang="en">A. N. Nesmeyanov Institute of Organoelement Compounds of the RAS<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>17</day><month>10</month><year>2023</year></pub-date><volume>17</volume><issue>3</issue><fpage>386</fpage><lpage>399</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Архипов И.А., Арисов М.В., Халиков С.С., Кочетков П.П., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Архипов И.А., Арисов М.В., Халиков С.С., Кочетков П.П.</copyright-holder><copyright-holder xml:lang="en">Arkhipov I.A., Arisov M.V., Khalikov S.S., Kochetkov P.P.</copyright-holder><license 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/1075">https://vniigis.elpub.ru/jour/article/view/1075</self-uri><abstract><p>Цель исследований – изучение биотрансформации фенбендазола в организме овец после введения твердой дисперсии фенбендазола (ТДФ), полученной по механохимической технологии с арабиногалактаном. Материалы и методы. ТДФ в дозе 2,0 мг/кг по ДВ назначали овцам перорально. Пробы сыворотки крови животных исследовали методом высокоэффективной жидкостной хроматографии с тандемным масс-спектрометрическим детектированием (ВЭЖХ-МС/МС) с целью определения концентрации фенбендазола (ФБЗ) и его метаболитов сульфоксида и сульфона через 0, 1, 2, 4, 6, 8, 12, 24, 33, 48 и 72 ч после введения ТДФ и исходного ФБЗ (субстанции). Содержание остаточных количеств ФБЗ и его метаболитов в органах и тканях овец определяли через 1, 3, 6, 11 и 21 сут после введения препаратов. Описана пробоподготовка и валидация метода. Результаты и обсуждение. Получена значительная разница в метаболизме, фармакокинетике и сроках выведения ФБЗ и его метаболитов после введения овцам базового препарата (субстанции ФБЗ) и ТДФ в равной дозе по 2,0 мг/ кг по ДВ. ФБЗ и его метаболиты начали обнаруживать в сыворотке крови через 2 ч после введения ТДФ и через 4 ч после применения базового ФБЗ. Фармакокинетические параметры ФБЗ и его метаболитов характеризуют большую концентрацию препарата в крови и более продолжительное время его удержания в кровотоке после введения ТДФ по сравнению с показателями базового препарата. Максимальную концентрацию ФБЗ и его метаболитов обнаруживали в органах и тканях овец, получивших ТДФ на третьи сутки в количестве в печени ФБЗ 4862,3±296,2; сульфоксида 18243,5±486,1 и сульфона 2482,3±132,4 нг/г, а после введения базового ФБЗ на шестые сутки – в десятки раз меньшей концентрации. ФБЗ и его метаболиты не обнаруживали органах и тканях овец на 16-е сутки после применения базового ФБЗ и на 21-е сутки после введения ТДФ.</p></abstract><trans-abstract xml:lang="en"><p>The purpose of the research is to study the biotransformation of fenbendazole in the body of sheep after administration of fenbendazole solid dispersion (FSD) prepared by mechanochemical technique with arabinogalactan. Materials and methods. The FSD at a dose of 2.0 mg/kg for the active substance was administered orally to sheep. Animal blood serum samples were studied by high performance liquid chromatography / tandem mass spectrometry (HPLC-TMS) to determine the concentration of fenbendazole (FBZ) and its sulfoxide and sulfone metabolites at 0, 1, 2, 4, 6, 8, 12, 24, 33, 48 and 72 hours after administered FSD and initial FBZ (substance). FBZ and its metabolite residual quantity in the organs and tissues of the sheep was determined at 1, 3, 6, 11, and 21 days after the drug administration. The prepared sample and validated method were described. Results and discussion. A significant difference was found in the metabolism, pharmacokinetics, and timing of the FBZ and its metabolite elimination after the base drug (FBZ substance) and FSD were administered to sheep in an equal dose of 2.0 mg/kg for the active substance. FBZ and its metabolites began to be detected in blood serum 2 hours after the FSD and 4 hours after the base FBZ. Pharmacokinetic parameters of FBZ and its metabolites characterize a higher drug concentration in the blood and a longer retention time in the circulation after the FSD as compared with the base drug parameters. The FBZ and its metabolite maximum concentration was found in the organs and tissues of the sheep that received the FSD on day 3 in the liver amount of 4862.3±296.2 ng/g of FBZ; 18243.5±486.1 ng/g of sulfoxide; and 2482.3±132.4 ng/g of sulfone; and tens of times lower concentration after the base FBZ on day 6. FBZ and its metabolites were not detected in the organs and tissues of the sheep on day 16 after the base FBZ, and on day 21 after the FSD.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фенбендазол</kwd><kwd>твердая дисперсия</kwd><kwd>сульфоксид</kwd><kwd>сульфон</kwd><kwd>фармакокинетика</kwd><kwd>сроки выведения</kwd><kwd>жидкостная хроматография</kwd><kwd>масс-спектрометрия</kwd><kwd>овцы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fenbendazole</kwd><kwd>solid dispersion</kwd><kwd>sulfoxide</kwd><kwd>sulfone</kwd><kwd>pharmacokinetics</kwd><kwd>elimination time</kwd><kwd>liquid chromatography</kwd><kwd>mass spectrometry</kwd><kwd>sheep</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена при финансовой поддержке Минобрнауки РФ.</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The study was supported financially by the Ministry of Education and Science of the Russian Federation.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Архипов И. 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