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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">ivm</journal-id><journal-title-group><journal-title xml:lang="ru">Международный вестник ветеринарии</journal-title><trans-title-group xml:lang="en"><trans-title>International Journal of Veterinary Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-2419</issn><publisher><publisher-name>SpbGUVM Publishing House</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.52419/issn2072-2419.2022.3.68</article-id><article-id custom-type="elpub" pub-id-type="custom">ivm-909</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, ФАРМАЦИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHARMACOLOGY, TOXICOLOGY, PHARMACY</subject></subj-group></article-categories><title-group><article-title>ИЗУЧЕНИЕ ОСТРОЙ ТОКСИЧНОСТИ ПРЕПАРАТА  НА ОСНОВЕ ТОЛТРАЗУРИЛА, ТИНИДАЗОЛА  И ЛЕВАМИЗОЛА</article-title><trans-title-group xml:lang="en"><trans-title>ACUTE TOXICITY STUDY BASED ON TOLTRAZURIL, TINIDAZOLE AND LEVAMISOLA</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>Бутенко</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Butenko</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>асп. каф. терапии и фармакологии</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Оробец</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Orobec</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>зав. каф. терапии и фармакологии, д.вет. н., проф.</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Киреев</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kireev</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>проф. каф. терапии и фармакологии, д.биол. н., доц.</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Ставропольский государственный аграрный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Stavropol State Agrarian University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>13</day><month>10</month><year>2022</year></pub-date><volume>0</volume><issue>3</issue><fpage>68</fpage><lpage>76</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бутенко А.В., Оробец В.А., Киреев И.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Бутенко А.В., Оробец В.А., Киреев И.В.</copyright-holder><copyright-holder xml:lang="en">Butenko A.V., Orobec V.A., Kireev I.V.</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://vetjournal.spbguvm.ru/jour/article/view/909">https://vetjournal.spbguvm.ru/jour/article/view/909</self-uri><abstract><p>В результате проведенных исследований установлено, что предлагаемый препарат на основе толтразурила, тинидазола и левамизола гидрохлорида по среднесмертельной пероральной дозе в соответствии с ГОСТ 12.1.007–76 относится к четвертому классу опасности – вещества малоопасные.Для оценки острой токсичности препарата сформировали опытные и контрольные группы белых крыс линии Wistar массой тела 190.2±5.92 грамм. Для исследования острой токсичности препарата на основе толтразурила, тинидазола и левамизола гидрохлорида готовили суспензию с использованием эмульгатора «Полисорбат 80». Приготовленную суспензию в разных дозировках вводили посредством внутрижелудочного зонда опытным животным и равный объем физиологического раствора контрольной группе белых крыс. При введении препарата на основе толтразурила, тинидазола и левамизола гидрохлорида в дозе 3745 мг/кг зафиксирована гибель двух крыс, что составляет 20% опытной группы №5. При введении препарата в дозе 5350 мг/кг зарегистрировано 5 павших животных или 50% опытной группы №8, а при введении 6420 мг/кг - 10 павших лабораторных животных, т.е. всех животных опытной группы №10. При регистрации массы тела белых крыс опытных и контрольных групп не установлено статистически достоверных различий показателей за весь период наблюдения. В то же время, необходимо отметить, что в группах опытных лабораторных животных, в которых испытывали препарат в дозе от 3745 мг/кг до 5885 мг/кг установлены в сравнении с контролем более низкие значения прироста массы тела. Установлено, что минимальная переносимая доза составляет 3210.0 мг/кг, LD16 – 3679.7 мг/кг , LD50 – 5029.0 мг/кг, LD84 – 6121.5 мг/кг, LD100 – 6420.0 мг/кг и SLD50 – ±406. Полученные данные позволяют перейти к изучению субхронической токсичности и раздражающего действия разработанного препарата.</p></abstract><trans-abstract xml:lang="en"><p>As a result of the studies, it was found that the proposed drug based on toltrazuril, tinidazole and levamisole hydrochloride according to the average lethal oral dose in accordance with GOST 12.1.007–76 belongs to the fourth hazard class - low-hazard substances. To assess the acute toxicity of the drug, experimental and control groups of whites were formed. Wistar rats weighing 190.2±5.92 grams. To study the acute toxicity of the drug based on toltrazuril, tinidazole and levamisole hydrochloride, a suspension was prepared using the Polysorbate 80 emulsifier. The prepared suspension in different dosages was administered through an intragastric tube to experimental animals and an equal volume of physiological saline was administered to the control group of white rats. With the introduction of a drug based on toltrazuril, tinidazole and levamisole hydrochloride at a dose of 3745 mg/kg, the death of two rats was recorded, which is 20% of the experimental group No. 5. With the introduction of the drug at a dose of 5350 mg/kg, 5 dead animals or 50% of experimental group No. 8 were registered, and with the introduction of 6420 mg/kg - 10 dead laboratory animals, i.e. all animals of the experimental group No. 10. When registering the body weight of white rats of the experimental and control groups, no statistically significant differences were found in the indicators for the entire observation period. At the same time, it should be noted that in the groups of experimental laboratory animals in which the drug was tested at a dose of 3745 mg/kg to 5885 mg/kg, lower values of body weight gain were established in comparison with the control. The minimum tolerated dose was found to be 3210.0 mg/kg, LD16 - 3679.7 mg/kg, LD50 - 5029.0 mg/kg, LD84 - 6121.5 mg/kg, LD100 - 6420.0 mg/kg and SLD50 - ±406. The data obtained allow us to proceed to the study of subchronic toxicity and irritant action of the developed drug.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>толтразурил</kwd><kwd>тинидазол</kwd><kwd>левамизол гидрохлорид</kwd><kwd>острая токсичность</kwd><kwd>субхроническая токсичность</kwd><kwd>раздражающее действие</kwd></kwd-group><kwd-group xml:lang="en"><kwd>toltrazuril</kwd><kwd>tinidazole</kwd><kwd>levamisole hydrochloride</kwd><kwd>acute toxicity</kwd><kwd>subchronic toxicity</kwd><kwd>irritant effect</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">Миронова А.Н. Руководство по проведению доклинических исследований лекарственных средств. Часть первая / Под ред. А.Н. Миронова. — М.: Гриф и К, 2013. — 944</mixed-citation><mixed-citation xml:lang="en">Миронова А.Н. Руководство по проведению доклинических исследований лекарственных средств. 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