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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">scbmt</journal-id><journal-title-group><journal-title xml:lang="ru">БИОМЕДИЦИНА</journal-title><trans-title-group xml:lang="en"><trans-title>Journal Biomed</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2074-5982</issn><issn pub-type="epub">2713-0428</issn><publisher><publisher-name>Scientific center of biomedical technologies of Federal Medical and Biological Agency</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">scbmt-62</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Коррекция рекомбинантным лактоферрином человека гормонально-метаболических сдвигов возрастного гипогонадизма у крыс-самцов</article-title><trans-title-group xml:lang="en"><trans-title>Correction of hormonal and metabolic changes of age-specific hypogonadism in male rats with recombinant human lactoferrin</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>Рудниченко</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rudnichenko</surname><given-names>Yu. A.</given-names></name></name-alternatives><email xlink:type="simple">link060619@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лукашевич</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Lukashevich</surname><given-names>V. S.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Залуцкий</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zalutskiy</surname><given-names>I. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Институт физиологии НАН Беларуси</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>26</day><month>02</month><year>2019</year></pub-date><volume>0</volume><issue>1</issue><fpage>52</fpage><lpage>62</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Рудниченко Ю.А., Лукашевич В.С., Залуцкий И.В., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Рудниченко Ю.А., Лукашевич В.С., Залуцкий И.В.</copyright-holder><copyright-holder xml:lang="en">Rudnichenko Y.A., Lukashevich V.S., Zalutskiy 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://journal.scbmt.ru/jour/article/view/62">https://journal.scbmt.ru/jour/article/view/62</self-uri><abstract><p>На модели возрастного гипогонадизма было показано снижение в сыворотке крови экспериментальных животных уровня тестостерона и его некоторых предшественников в стероидогенезе (прогестерон и 17-ОН прогестерон). На этом фоне увеличивалось содержание эстрадиола, следствием чего явилось достоверное понижение тестостерон/эстрадиолового индекса в группе двухлетних крыс-самцов на протяжении всего эксперимента. Системное введение per os рекомбинантного лактоферрина человека экспериментальным животным оказывало значительное стимулирующее действие на биосинтез тестостерона у двухлетних особей, восстанавливая его уровень до физиологических значений молодых крыс. При этом происходило достоверное понижение сывороточного содержания лютеинизирующего (но не фолликулостимулирующего) гормона на 26,4% по сравнению с контрольной группой двухлетних животных.</p></abstract><trans-abstract xml:lang="en"><p>Our study of the rat model of age-related hypogonadism revealed reduced serum levels of testosterone and some its predecessors in steroidogenesis (progesterone and 17-OH progesterone). Against this background, there was an increase of estradiol, resulting in a significant decrease of testosterone/estradiol index in 2-year rats during the experiment. Systemic administration per os of recombinant human lactoferrin to experimental animals had a significant stimulatory effect on testosterone biosynthesis in 2-year-olds, restoring it to the level of physiological values in young rats. Alongside with this, there also occurred a significant decrease in serum levels of luteinizing (not follicle stimulating) hormone - by 26,4% as compared with the control group of 2 year old animals.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>возрастной гипогонадизм</kwd><kwd>рекомбинантный человеческий лактоферрин</kwd><kwd>тестостерон</kwd><kwd>стероидогенез</kwd><kwd>липидный и белковый обмен</kwd></kwd-group><kwd-group xml:lang="en"><kwd>age-related hypogonadism</kwd><kwd>recombinant human lactoferrin</kwd><kwd>testosterone</kwd><kwd>steroidogenesis</kwd><kwd>lipid and protein metabolism</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">Западнюк А.П. и др. Лабораторные животные: разведение, содержание, использование в эксперименте. - Киев: Вища школа. - 1983. - 383 с.</mixed-citation><mixed-citation xml:lang="en">Западнюк А.П. и др. 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