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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">cardiotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский журнал клинической и экспериментальной медицины</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian Journal of Clinical and Experimental Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2713-2927</issn><issn pub-type="epub">2713-265X</issn><publisher><publisher-name>TSU publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29001/2073-8552-2023-38-1-175-180</article-id><article-id custom-type="elpub" pub-id-type="custom">cardiotomsk-1725</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>ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ. Фармаколоия</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>EXPERIMENTAL INVESTIGATIONS. Pharmacology</subject></subj-group></article-categories><title-group><article-title>Оценка противомикробной активности пиримидинового соединения 2-метил-3-(2-фенил-2-оксоэтил)хиназолин-4(3H)-он в отношении Klebsiella pneumoniae в условиях in vivo</article-title><trans-title-group xml:lang="en"><trans-title>Evaluation of the antimicrobial activity of a pyrimidine compound 2-methyl-3-(2-phenyl-2-oxoethyl) quinazolin-4(3H)-on against Klebsiella pneumoniae under in vivo conditions</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9994-4751</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цибизова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsybizova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Цибизова Александра Александровна - кандидат фармацевтических наук, доцент кафедры фармакогнозии, фармацевтической технологии и биотехнологии.</p><p>414000, Астрахань, ул. Бакинская, 121</p></bio><bio xml:lang="en"><p>Alexandra  A.  Tsybizova - Cand.  Sci.  (Pharm.), Associate  Professor, Head of the Research Center; Associate Professor, Pharmacognosy, Pharmaceutical   Technology   and  Biotechnology   Chair,  Astrakhan   State Medical University.</p><p>121 Bakinskaya str., Astrakhan, 414000</p></bio><email xlink:type="simple">sasha3633@yandex.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/0000-0003-2998-2864</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ясенявская</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Yasenyavskaya</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ясенявская Анна Леонидовна - кандидат медицинских наук, доцент, руководитель Научно-исследовательского центра, доцент кафедры фармакогнозии, фармацевтической технологии и биотехнологии.</p><p>414000, Астрахань, ул. Бакинская, 121</p></bio><bio xml:lang="en"><p>Anna  L.  Yasenyavskaya - Cand.  Sci.  (Med.),  Associate  Professor, Head of the Research Center; Associate Professor, Pharmacognosy, Pharmaceutical   Technology   and  Biotechnology   Chair,  Astrakhan   State Medical University.</p><p>121 Bakinskaya str., Astrakhan, 414000</p></bio><email xlink:type="simple">yasen_9@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/0000-0001-7574-3923</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тюренков</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Tyurenkov</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тюренков  Иван Николаевич - доктор медицинских наук, член-корреспондент РАН, профессор, заведующий  кафедрой фармакологии  и фармации,  Институт непрерывного  медицинского  и фармацевтического  образования.</p><p>400131, Волгоград, пл. Павших Борцов, 1</p></bio><bio xml:lang="en"><p>Ivan N. Tyurenkov - Dr. Sci. (Med.), Corresponding Member of RAS, Professor, Head of the Pharmacology and Pharmacy Chair, Institute of Continuing Medical and Pharmaceutical Education of the FAMT, Volgograd State Medical University.</p><p>1, Fallen Fighters sq., Volgograd, 400131</p></bio><email xlink:type="simple">fi_bfuv@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/0000-0002-4721-0959</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Озеров</surname><given-names>А. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Ozerov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Озеров Александр Александрович - доктор химических наук, профессор, заведующий кафедрой фармацевтической и токсикологической химии.</p><p>400131, Волгоград, пл. Павших Борцов, 1</p></bio><bio xml:lang="en"><p>Alexander A. Ozerov - Dr. Sci. (Chem.), Professor, Head of the Pharmaceutical and Toxicological Chemistry Chair, Volgograd State Medical University.</p><p>1, Fallen Fighters sq., Volgograd, 400131</p></bio><email xlink:type="simple">prof_ozerov@yahoo.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5336-4455</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самотруева</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Samotrueva</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самотруева Марина Александровна - доктор медицинских наук, профессор, заведующий кафедрой фармакогнозии, фармацевтической технологии и биотехнологии.</p><p>414000, Астрахань, ул. Бакинская, 121</p></bio><bio xml:lang="en"><p>Marina A. Samotrueva - Dr. Sci. (Med.), Professor, Head of the Pharmacognosy, Pharmaceutical Technology and Biotechnology Chair, Astrakhan State Medical University.</p><p>121 Bakinskaya str., Astrakhan, 414000</p></bio><email xlink:type="simple">ms1506@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Астраханский государственный медицинский университет Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Astrakhan State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Волгоградский государственный медицинский университет Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Volgograd State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>09</day><month>04</month><year>2023</year></pub-date><volume>38</volume><issue>1</issue><fpage>175</fpage><lpage>180</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Цибизова А.А., Ясенявская А.Л., Тюренков И.Н., Озеров А.A., Самотруева М.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Цибизова А.А., Ясенявская А.Л., Тюренков И.Н., Озеров А.A., Самотруева М.А.</copyright-holder><copyright-holder xml:lang="en">Tsybizova A.A., Yasenyavskaya A.L., Tyurenkov I.N., Ozerov A.A., Samotrueva M.A.</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://www.sibjcem.ru/jour/article/view/1725">https://www.sibjcem.ru/jour/article/view/1725</self-uri><abstract><p>Наибольшую опасность представляет развитие множественной антибактериальной резистентности у микроорганизмов, в том числе и Klebsiella pneumoniae, что актуализирует необходимость разработки и синтеза новых антимикробных соединений. Учитывая разностороннюю фармакологическую активность, соединения пиримидина стали предметом интереса для ученых в аспекте использования их как основы для новых противомикробных средств.</p><sec><title>Цель</title><p>Цель: оценка противомикробной активности пиримидинового соединения 2-Метил-3-(2-фенил-2-оксоэтил)хиназолин-4(3Н)-он в отношении Кl. pneumoniae в условиях in vivo.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Оценку противомикробной активности в условиях in vivo соединения 2-Метил-3-(2-фенил-2-оксоэтил)хиназолин-4(3Н)-он в отношении Кl. pneumoniae проводили, моделируя генерализованную инфекцию, путем интраперитонеального введения патогена в дозе 3 × 106. Эксперимент проводили на мышах линии CBA (40 особей), разделенных на группы: контроль I – животные, получавшие интраперитонеально воду для инъекций; контроль II – инфицированные животные, которые не получали лечения; опытные группы – мыши с генерализованной инфекцией, которые получали в качестве лечения цефтриаксон в дозе 50 мг/кг интраперитонеально в течение 7 дней, и животные, получавшие исследуемое соединение в дозе 27 мг/кг на фоне инфекции в том же режиме. Противомикробную активность оценивали по следующим параметрам: выживаемость животных; индекс обсемененности внутренних органов и крови; общее количество лейкоцитов, С-реактивный белок и прокальцитонин.</p></sec><sec><title>Результаты</title><p>Результаты. Установлено, что пиримидиновое производное 2-Метил-3-(2-фенил-2-оксоэтил)хиназолин-4(3Н)-он оказывает выраженную противомикробную активность в отношении Кl. pneumonia, что проявляется в повышении выживаемости животных в условиях генерализованной клебсиелезной инфекции, а также в снижении индекса обсемененности, общего количества лейкоцитов и уровней С-реактивного белка и прокальцитонина, что подтверждает снижение воспалительной реакции.</p></sec><sec><title>Выводы</title><p>Выводы. Таким образом, производное пиримидина 2-Метил-3-(2-фенил-2-оксоэтил)хиназолин-4(3Н)-он проявляет противомикробную активность, сопоставимую с цефтриаксоном, в отношении Klebsiella pneumonia в условиях экспериментальной генерализованной клебсиелезной инфекции.</p></sec></abstract><trans-abstract xml:lang="en"><p>The greatest danger is the development of multiple antimicrobial resistance in microorganisms, including Klebsiella pneumoniae, which actualizes the necessity of development and synthesis of new antimicrobial compounds. Considering the versatile pharmacological activity, pyrimidine compounds became a subject of interest for scientists in the aspect of their use as a basis for new antimicrobial agents.</p><sec><title>Aim</title><p>Aim: To assess the antimicrobial activity of the pyrimidine compound 2-Methyl-3-(2-phenyl-2-oxoethyl)quinazoline-4(3H)-on against Kl. pneumoniae under in vivo conditions.</p></sec><sec><title>Material and Methods</title><p>Material and Methods. The antimicrobial activity in vivo of the compound 2-Methyl-3-(2-phenyl-2-oxoethyl)quinazolin-4(3H)-on against Kl. pneumoniae was performed simulating generalized infection by intraperitoneal injection of the pathogen at a dose of 3 × 106. The experiment was conducted on CBA line mice (40 animals) divided into groups: control I – animals received intraperitoneal injection water; control II – infected animals received no treatment; experimental groups – mice with generalized infection treated with ceftriaxone at the dose 50 mg/kg intraperitoneally for 7 days, and the animals receiving the test compound at the dose 27 mg/kg against infection in the same mode. Antimicrobial activity was assessed by the following parameters: animal survival rate; internal organ and blood infestation index; total leukocyte count, C-reactive protein and procalcitonin.</p></sec><sec><title>Results</title><p>Results. It was found that pyrimidine derivative 2-Methyl-3-(2-phenyl-2-oxoethyl)quinazoline-4(3H)-on has a marked antimicrobial activity against Kl. pneumonia appeared in increase of animal survival in the conditions of generalized Klebsiella infection as well as in decrease of total leukocyte count, C-reactive protein and procalcitonin levels that confirms the reduction of the inflammatory reaction.</p></sec><sec><title>Conclusion</title><p>Conclusion. Thus, the pyrimidine derivative 2-Methyl-3-(2-phenyl-2-oxoethyl)quinazoline-4(3H)-on exhibits antimicrobial activity, comparable with ceftriaxone, against Klebsiella pneumoniae in experimental generalized Klebsiella infection.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>производное пиримидина</kwd><kwd>антибактериальная резистентность</kwd><kwd>Klebsiella pneumoniae</kwd><kwd>генерализованная инфекции</kwd><kwd>индекс обсемененности</kwd><kwd>С-реактивный белок</kwd><kwd>прокальцитонин</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pyrimidine derivative</kwd><kwd>antibiotic resistance</kwd><kwd>Klebsiella pneumoniae</kwd><kwd>generalized infection</kwd><kwd>index of infestation</kwd><kwd>C-reactive protein</kwd><kwd>procalcitonin</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Министерства здравоохранения Российской Федерации в части проведения НИР по теме «Поиск и разработка перспективных соединений с антибактериальной активностью среди производных пиримидина для создания лекарственных препаратов» 48.2-2021.</funding-statement><funding-statement xml:lang="en">The work was performed within the framework of the state assignment of the Ministry of Health of the Russian Federation in terms of research on “Search and development of promising compounds with antibacterial activity among pyrimidine derivatives for the creation of drugs” 48.2-2021.</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">Mancuso G., Midiri A., Gerace E., Biondo C. 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