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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">10.31016/1998-8435-2022-16-4-432-438</article-id><article-id custom-type="elpub" pub-id-type="custom">vniigis-969</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>Фармакокинетика празиквантела и моксидектина в организме собак после применения гельмимакса</article-title><trans-title-group xml:lang="en"><trans-title>Praziquantel and Moxidectin pharmacokinetics in dogs after Helmimax administration</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>Смирнов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Смирнов Александр Анатолиевич, кандидат медицинских наук</p><p>129090, Москва, ул. Щепкина, 25/20</p></bio><bio xml:lang="en"><p>Smirnov Alexandr A., Cand. Sc. Med.</p><p>25/20 Shchepkina Str., Moscow, 129090</p></bio><email xlink:type="simple">info@apicenna.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/0000-0002-2086-6202</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бондаренко</surname><given-names>В. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Bondarenko</surname><given-names>V. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бондаренко Владимир Олегович, доктор биологических наук</p><p>123022, Москва, Звенигородское шоссе, 5</p></bio><bio xml:lang="en"><p>Bondarenko Vladimir O., Dr. Sc. Biol.</p><p>5 Zvenigorodskoe shosse, Moscow, 123022</p></bio><email xlink:type="simple">v.bondarenko@vgnki.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/0000-0003-2558-4113</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соболева</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Soboleva</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Соболева Наталья Игоревна, кандидат биологических наук</p><p>123022, Москва, Звенигородское шоссе, 5</p></bio><bio xml:lang="en"><p>Soboleva Natalia I., Cand. Sc. Biol.</p><p>5 Zvenigorodskoe shosse, Moscow, 123022</p></bio><email xlink:type="simple">n.soboleva@vgnki.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/0000-0001-5594-0102</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Махлис</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Makhlis</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Махлис Олег Александрович, младший научный сотрудник</p><p>123022, Москва, Звенигородское шоссе, 5</p></bio><bio xml:lang="en"><p>Makhlis Oleg A., Junior Staff Scientist</p><p>5 Zvenigorodskoe shosse, Moscow, 1</p></bio><email xlink:type="simple">o.mahlis@vgnki.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чагин</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Chagin</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чагин Алексей Сергеевич</p><p>620014, г. Екатеринбург, ул. Первомайская, 56</p></bio><bio xml:lang="en"><p>Chagin Alexei S.</p><p>56 Pervomayskaya Str., Yekaterinburg, 620014</p></bio><email xlink:type="simple">alex@bioconsulting.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ООО «АПИ-САН»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>API-SAN LLC</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Всероссийский государственный Центр качества и стандартизации лекарственных средств для животных и кормов» (ФГБУ «ВГНКИ»)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Budgetary Institution “The Russian State Center for Animal Feed and Drug Standardization and Quality” (FGBU “VGNKI”)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ООО «БИОКОНСАЛТИНГ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>BIOCONSULTING LLC</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>02</day><month>01</month><year>2023</year></pub-date><volume>16</volume><issue>4</issue><fpage>432</fpage><lpage>438</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Смирнов А.А., Бондаренко В.О., Соболева Н.И., Махлис О.А., Чагин А.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Смирнов А.А., Бондаренко В.О., Соболева Н.И., Махлис О.А., Чагин А.С.</copyright-holder><copyright-holder xml:lang="en">Smirnov A.A., Bondarenko V.O., Soboleva N.I., Makhlis O.A., Chagin A.S.</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/969">https://vniigis.elpub.ru/jour/article/view/969</self-uri><abstract><p>Цель исследований – изучение фармакокинетики празиквантела и моксидектина в организме собак после применения гельмимакса.Материалы и методы. Исследования фармакокинетики гельмимакса проводили на 8 взрослых собаках самцах массой тела 15–35 кг разных пород в возрасте от 2 до 5 лет. Гельмимакс вводили перорально натощак с небольшим количеством корма в дозе 5 мг/кг по празиквантелу и 0,25 мг/кг по моксидектину из расчета 1 таблетка на 10 кг массы тела. Отбор крови проводили через различные временные интервалы после введения. Отобранную кровь подвергали пробоподготовке: осаждение форменных элементов, белков, твердофазная экстракция, микрофильтрация. Анализ и детектирование действующих компонентов проводили методом ВЭЖХ МС/МС. Определение действующих веществ в плазме крови проводили по разработанной методике, которая прошла валидацию. Перед измерением осуществляли калибровку прибора.Результаты и обсуждение. В результате проведенных исследований были рассчитаны фармакокинетические показатели празиквантела и моксидектина. Максимальная концентрация составила 0,240 и 0,130 мкг/мл, время достижения максимальной концентрации 2,15 и 1,48 ч, период полувыведения 8,41 и 3,61 ч для моксидектина и празиквантела соответственно.</p></abstract><trans-abstract xml:lang="en"><p>The purpose of the research is to study Praziquantel and Moxidectin pharmacokinetics in dogs after Helmimax administration.Materials and methods. Helmimax pharmacokinetics was studied on 8 adult male dogs of different breeds aged 2 to 5 years and weighing 15–35 kg. Helmimax was administered orally in the fasted state with a small amount of feed at a dose of 5 mg/kg for Praziquantel and 0.25 mg/kg for Moxidectin at the rate of 1 tablet per 10 kg of body weight. Blood was sampled at various periods after the administration. The collected blood underwent sample processing: formed element and protein precipitation, solid-phase extraction, and microfiltration. The active components were analyzed and detected by the HPLC-MS/MS. Active substances in the blood plasma were determined according to the developed technique which had been validated. The device was calibrated before the measurement.Results and discussion. As a result of the studies, the Praziquantel and Moxidectin pharmacokinetic parameters were calculated. The maximum concentration was 0.240 and 0.130 μg/mL, the time-to-peak concentration was 2.15 and 1.48 hours, and the elimination half-life was 8.41 and 3.61 hours for Moxidectin and Praziquantel, respectively.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>празиквантел</kwd><kwd>моксидектин</kwd><kwd>фармакокинетика</kwd><kwd>гельмимакс</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Praziquantel</kwd><kwd>Moxidectin</kwd><kwd>pharmacokinetics</kwd><kwd>Helmimax</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">Методические указания Министерства здравоохранения и социального развития РФ от 30.08.2004 г. «Проведение качественных исследований биоэквивалентности лекарственных средств».</mixed-citation><mixed-citation xml:lang="en">Guidelines by the Russian Federation Ministry of Health and Social Development dated August 30, 2004 "Qualitative bioequivalence investigations for medicinal products".</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Соловьев В. 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