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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/issn2072-2419.2024.1.287</article-id><article-id custom-type="elpub" pub-id-type="custom">ivm-1334</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>БИОХИМИЯ, МОРФОЛОГИЯ, ФИЗИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOCHEMISTRY, ANATOMY, PHYSIOLOGY</subject></subj-group></article-categories><title-group><article-title>Вычисление референтных интервалов для показателей тиреоидных гормонов и кортизола у лошадей</article-title><trans-title-group xml:lang="en"><trans-title>Calculation of reference intervals for indicators of thyroid hormones and cortisol in horses</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7324-6250</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Васильева</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasileva</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> канд. ветеринар. наук, доц. каф. биохимии и физиологии</p></bio><bio xml:lang="en"><p> Candidate of Veterinary Sciences, Associate Professor of the Department of Biochemistry and Physiology </p></bio><email xlink:type="simple">svvet@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/0000-0003-3005-0968</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карпенко</surname><given-names>Л. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Karpenko</surname><given-names>L. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р биол. наук, проф., зав. каф. биохимии и физиологии</p></bio><bio xml:lang="en"><p>Doctor of Biological Sciences, Prof., Head. department Biochemistry and Physiology </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>02</day><month>04</month><year>2024</year></pub-date><volume>0</volume><issue>1</issue><fpage>287</fpage><lpage>294</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Васильева С.В., Карпенко Л.Ю., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Васильева С.В., Карпенко Л.Ю.</copyright-holder><copyright-holder xml:lang="en">Vasileva S.V., Karpenko L.Y.</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/1334">https://vetjournal.spbguvm.ru/jour/article/view/1334</self-uri><abstract><p>В статье рассмотрены результаты вычисления референтных интервалов для показателей гормонов щитовидной железы и кортизола у взрослых лошадей. К исследованию были приняты результаты лабораторного исследования концентрации общего трийодтиронина, общего и свободного тироксина и кортизола от 50 лошадей в возрасте от 3 до 29 лет, среди которых было 17 кобыл, 13 жеребцов и 20 меринов. У всех животных был произведён расширенный биохимический анализ крови, по результатам которого не было выявлено патологических изменений. Для вычисления нормативных пределов колебаний по каждому гормону были проведены вычисления по методу Тьюки, который применяется для определения референтных границ в случае малого количества вариант в группе и отсутствия нормального распределения. Для вычисления был использован пакет Microsoft Excel. Проведённые исследования позволили уточнить референтные интервалы для тиреоидных гормонов и кортизола у лошадей, которые составили: общий трийодтиронин (Т3) – 1,13-4,04 нмоль/л, общий тироксин (Т4) – 20,97-57,42 нмоль/л, свободный тироксин (сТ4) 7,38-23,07 пмоль/л, кортизол – 39,42-227,02 нмоль/л. Полученные результаты можно рекомендовать к использованию не только для клинико-биохимической лаборатории СПбГУВМ, но и для всех ветеринарных лабораторий, использующих диагностические тест-системы для иммуноферментного анализа АО «Витал Девелопмент Корпорэйшн».</p></abstract><trans-abstract xml:lang="en"><p>The article discusses the results of calculating reference intervals for thyroid hor mones and cortisol in adult horses. The study included the results of a laboratory study of the concentrations of total triiodothyronine, total and free thyroxine and cortisol from 50 horses aged 3 to 29 years, including 17 mares, 13 stallions and 20 geldings. All animals underwent an extensive biochemical blood test, the results of which revealed no pathological changes.To calculate the normative limits of fluctuations for each hormone, calculations were carried out using the Tukey method, which is used to determine the reference limits in the case of a small number of variants in the group and the absence of a normal distribution. Microsoft Excel was used for calculations. The conducted studies made it possible to clarify the reference intervals for thyroid hormones and cortisol in horses, which were: total triiodothyronine (T3) - 1.13-4.04 nmol/l, total thyroxine (T4) - 20.97-57.42 nmol/l, free thyroxine (fT4) 7.38-23.07 pmol/l, cortisol – 39.42-227.02 nmol/l. The results obtained can be recommended for use not only for the clinical and biochemical laboratory of St. Petersburg State University of Medicine, but also for all veterinary laboratories using diagnostic test systems for enzyme immunoassay of Vital Development Corporation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>лошади</kwd><kwd>эндокринная система</kwd><kwd>трийодтиронин</kwd><kwd>тироксин</kwd><kwd>кортизол</kwd><kwd>референтные интервалы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>horses</kwd><kwd>endocrine system</kwd><kwd>triiodothyronine</kwd><kwd>thyroxine</kwd><kwd>cortisol</kwd><kwd>reference intervals</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">Equine Clinical Pathology / Edited by Raquel M. Walton. – John Wiley &amp; Sons, 2013. – 296 р.</mixed-citation><mixed-citation xml:lang="en">Equine Clinical Pathology / Edited by Raquel M. 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