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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/issn2072-2419.2024.4.20</article-id><article-id custom-type="elpub" pub-id-type="custom">ivm-1501</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>ИНФЕКЦИОННЫЕ БОЛЕЗНИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INFECTIOUS DISEASES</subject></subj-group></article-categories><title-group><article-title>Оценка литической активности коммерческих препаратов бактериофагов в отношении Klebsiella pneumoniae, ассоциированной с бронхопневмонией крупного рогатого скота</article-title><trans-title-group xml:lang="en"><trans-title>Evaluation of lytic activity of commercial bacteriophage preparations against Klebsiella pneumoniae associated bronchopneumonia of cattle</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-2884-9630</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Киянчук</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kiyanchuk</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Киянчук М.В. – асп.</p></bio><bio xml:lang="en"><p>Kiyanchuk M.V. – Postgraduate student;</p></bio><email xlink:type="simple">kiyanchuk.margosha@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/0000-0002-1245-3440</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сухинин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sukhinin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сухинин А.А. – д-р биол. наук, проф. </p></bio><bio xml:lang="en"><p>Sukhinin A.A. – Grand PhD in Biology, Professor</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Санкт-Петербургский государственный университет ветеринарной медицины»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>St. Petersburg State University of Veterinary Medicine</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>14</day><month>01</month><year>2025</year></pub-date><volume>0</volume><issue>4</issue><fpage>20</fpage><lpage>25</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Киянчук М.В., Сухинин А.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Киянчук М.В., Сухинин А.А.</copyright-holder><copyright-holder xml:lang="en">Kiyanchuk M.V., Sukhinin A.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://vetjournal.spbguvm.ru/jour/article/view/1501">https://vetjournal.spbguvm.ru/jour/article/view/1501</self-uri><abstract><p>В связи с тем, что возрастает количество сообщений о резистентности к противомикробным препаратам среди различных возбудителей бактериальных болезней, наблюдается ревитализация исследований, направленных на совершенствование лечебных мероприятий, ассоциированных с фаготерапией. Однако вызывает существенное беспокойство тот факт, что данные о эффективном применении фагосодержащих препаратов ограничены, что, в свою очередь, значительно затрудняет активное внедрение данной альтернативы антибиотикам в комплекс противоэпизоотических мероприятий. В связи с этим целью исследования является анализ эффективности жидких коммерческих препаратов бактериофагов при оценке литической активности в отношении Klebsiella pneumoniae, выделенных от телят с признаками бронхопневмонии, in vitro. Определение фаговых частиц проводили общепринятым методом Грациа. Литическую активность бактериофагов в ходе работы оценивали методом «spottest». Анализ полученных нами результатов демонстрирует возможность потенциального применения коммерческих фагосодержащих препаратов в составе схемы терапевтических мероприятий при инфекционной бронхопневмонии сельскохозяйственных животных. Выделенные из носоглоточной слизи телят изоляты Klebsiella pneumoniae проявили чувствительность к бактериофагам, входящим в состав коммерческих биопрепаратов, применённых в исследовании. Поскольку возрастает проблема нарастающей антибиотикорезистентности среди микроорганизмов, фаготерапия становится привлекательной альтернативой.</p></abstract><trans-abstract xml:lang="en"><p>As the number of reports of antimicrobial resistance among various bacterial pathogens is increasing, there has been a revitalisation of research aimed at improving therapeutic measures associated with phage therapy. However, the fact that data on the effective use of phage-containing preparations are limited is of considerable concern, which, in turn, significantly hampers the active introduction of this alternative to antibiotics in the complex of anti-epizootic measures. In this regard, the aim of the study is to analyses the effectiveness of liquid commercial preparations of bacteriophages in assessing the lytic activity against Klebsiella pneumoniae isolated from calves with signs of bronchopneumonia, in vitro. Determination of phage particles was carried out by the conventional Gratia method (agar layers). The lytic activity of bacteriophages was evaluated by «spot-test» method. The analysis of our results demonstrates the possibility of potential application of commercial phage -containing preparations as part of the scheme of therapeutic measures in infectious bronchopneumonia of farm animals. Klebsiella pneumoniae strains isolated from nasopharyngeal mucus of calves showed sensitivity to bacteriophages included in commercial biopreparations used in the study. As the problem of growing antibiotic resistance among microorganisms is increasing, phage therapy becomes an attractive alternative.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Klebsiella pneumoniae</kwd><kwd>телята</kwd><kwd>фаготерапия</kwd><kwd>ESKAPE</kwd><kwd>носоглоточная слизь</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Klebsiella pneumoniae</kwd><kwd>calves</kwd><kwd>bacteriophage therapy</kwd><kwd>ESKAPE</kwd><kwd>nasopharyngeal mucus</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">Abedon ST. Phage therapy of pulmonary infections. Bacteriophage. 2015 Apr 18;5 (1):e1020260. doi: 10.1080/21597081.2015.1020260. PMID:26442188; PMCID: PMC4422798.</mixed-citation><mixed-citation xml:lang="en">Abedon ST. Phage therapy of pulmonary infections. Bacteriophage. 2015 Apr 18;5 (1):e1020260. doi: 10.1080/21597081.2015.1020260. 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