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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="review-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">RUDN Journal of Agronomy and Animal Industries</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Agronomy and Animal Industries</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Агрономия и животноводство</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2312-797X</issn><issn publication-format="electronic">2312-7988</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">20272</article-id><article-id pub-id-type="doi">10.22363/2312-797X-2025-20-4-635-644</article-id><article-id pub-id-type="edn">CJMQTQ</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Veterinary science</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Ветеринария</subject></subj-group><subj-group subj-group-type="article-type"><subject>Review Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Features of the occurrence, spread, diagnosis, pathogenesis and treatment of infectious feline peritonitis</article-title><trans-title-group xml:lang="ru"><trans-title>Особенности возникновения, распространения, диагностики, патогенеза и лечения инфекционного перитонита кошек</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3023-6976</contrib-id><contrib-id contrib-id-type="spin">4867-7430</contrib-id><name-alternatives><name xml:lang="en"><surname>Laptev</surname><given-names>Sergey Vladimirovich</given-names></name><name xml:lang="ru"><surname>Лаптев</surname><given-names>Сергей Владимирович</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Biology, Associate Professor, Associate Professor of the Department of Epizootology and Organization of Veterinary Business</p></bio><bio xml:lang="ru"><p>кандидат биологических наук, доцент, доцент кафедры эпизоотологии и организации ветеринарного дела</p></bio><email>x9131078824@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8201-1042</contrib-id><contrib-id contrib-id-type="spin">1372-2660</contrib-id><name-alternatives><name xml:lang="en"><surname>Selina</surname><given-names>Marina Viktorovna</given-names></name><name xml:lang="ru"><surname>Селина</surname><given-names>Марина Викторовна</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Pedagogy, Associate Professor of the Department of Economics and Digitalization in the Agro-­Industrial Complex</p></bio><bio xml:lang="ru"><p>кандидат педагогических наук, доцент кафедры экономики и цифровизации в АПК</p></bio><email>project@mgavm.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Moscow State Academy of Veterinary Medicine and Biotechnology — MBA named after K.I. Skryabin</institution></aff><aff><institution xml:lang="ru">Московская государственная академия ветеринарной медицины и биотехнологии — МВА имени К.И. Скрябина</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-02-25" publication-format="electronic"><day>25</day><month>02</month><year>2026</year></pub-date><volume>20</volume><issue>4</issue><issue-title xml:lang="ru"/><fpage>635</fpage><lpage>644</lpage><history><date date-type="received" iso-8601-date="2026-02-24"><day>24</day><month>02</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-02-24"><day>24</day><month>02</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Laptev S.V., Selina M.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Лаптев С.В., Селина М.В.</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Laptev S.V., Selina M.V.</copyright-holder><copyright-holder xml:lang="ru">Лаптев С.В., Селина М.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://agrojournal.rudn.ru/agronomy/article/view/20272">https://agrojournal.rudn.ru/agronomy/article/view/20272</self-uri><abstract xml:lang="en"><p>This study presents a synthesis of current data on the prevalence, pathogenesis, diagnosis, and treatment of feline infectious peritonitis (FIP), caused by feline coronavirus (FCoV). Coronaviruses are characterized by a high mutation rate and the ability to cross species barriers, which explains their wide distribution among domestic and wild animals. It has been established that FCoV is detected in a significant proportion of the feline population; however, infectious peritonitis develops in only about 10 % of infected animals as a result of viral mutations occurring within the host organism. The disease is accompanied by systemic inflammatory processes, multiple organ failure, and high mortality. The study examines the mechanisms of coronavirus transmission, including the role of bats as reservoirs of <span class="mySpecialChars">α</span>- and <span class="mySpecialChars">β</span>-­CoVs, and confirms the ability of SARS-CoV-2 to replicate in cats and dogs, indicating potential zoonotic risks. Particular attention is given to laboratory diagnostic approaches, including PCR, ELISA, and the detection of characteristic biochemical and morphological changes. Data on lesions affecting various organs and systems are summarized, with a focus on cardiovascular complications, including myocarditis, which may develop either as a result of direct myocardial infection by the virus or secondary to systemic inflammatory responses and cytokine storm. Modern therapeutic strategies, including antiviral and immunomodulatory approaches, are analyzed. Nucleoside analogues, particularly GS-441524, which inhibits viral RNA replication, are highlighted as the most promising. The emergence of Russian drugs such as “KoronaCat” and “Melon-­V” has been noted; however, the risk of resistant strain development remains a concern. Thus, feline infectious peritonitis continues to represent one of the most pressing problems in veterinary medicine. The systematization of available data underscores the need for further studies aimed at clarifying the pathogenesis, improving diagnostic criteria, and developing effective antiviral therapies.</p></abstract><trans-abstract xml:lang="ru"><p>Представлено обобщение современных данных о распространении, патогенезе, диагностике и лечении инфекционного перитонита кошек (<a id="_idTextAnchor002"/>FIP), вызываемого коронавирусом кошек (FCoV). Коронавирусы характеризуются высокой частотой мутаций и способностью к межвидовой передаче, что объясняет их широкое распространение у домашних и диких животных. Установлено, что FCoV выявляется у значительной части популяции кошек, однако инфекционный перитонит развивается лишь у приблизительно 10 % инфицированных животных вследствие мутаций вируса внутри организма хозяина. Заболевание сопровождается системным воспалительным процессом, полиорганной недостаточностью и высокой летальностью. Рассмотрены механизмы передачи коронавирусов, включая роль летучих мышей как резервуара <span class="mySpecialChars">α</span>- и <span class="mySpecialChars">β</span>-­CoV, а также подтверждена возможность репликации SARS-CoV-2 в организме кошек и собак, что свидетельствует о потенциальных зоонозных рисках. Особое внимание уделено особенностям лабораторной диагностики, включая использование методов ПЦР, ИФА, а также выявлению характерных биохимических и морфологических изменений. Обобщены данные о поражении различных органов и систем, в частности о кардиоваскулярных осложнениях, включая миокардит, который может развиваться как при прямом инфицировании миокарда коронавирусом, так и в результате системной воспалительной реакции или цитокинового шторма. Проанализированы современные терапевтические подходы, включая противовирусные и иммуномодулирующие схемы. Наибольший интерес представляют нуклеозидные аналоги, в частности GS-441524, обладающий способностью прерывать репликацию вирусной РНК. Отмечено появление российских препаратов, таких как КоронаКэт, Melon-­V. Однако сохраняются риски формирования резистентных штаммов. Таким образом, инфекционный перитонит кошек остается одной из наиболее актуальных проблем ветеринарной медицины. Систематизация данных подчеркивает необходимость дальнейших исследований, направленных на уточнение патогенеза, совершенствование диагностических критериев и разработку эффективных противовирусных средств.</p></trans-abstract><kwd-group xml:lang="en"><kwd>coronaviruses</kwd><kwd>infection</kwd><kwd>FIP</kwd><kwd>myocarditis</kwd><kwd>symptoms</kwd><kwd>FCoV</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>коронавирусы</kwd><kwd>инфекция</kwd><kwd>FIP</kwd><kwd>миокардит</kwd><kwd>симптомы</kwd><kwd>FCoV</kwd></kwd-group><funding-group/></article-meta><fn-group/></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Petrova OU, Kosyaev NI, Efimova IO, Mozhaeva AA. Infektsionnyi peritonit koshek [Feline infectious peritonitis]. Agrarnaya nauka — sel’skomu khozyaistvu [Agricultural science — agriculture]. Barnaul: Altai State Agrarian University. 2018. P. 422–423. (In Russ.). 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