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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">safetyrisk</journal-id><journal-title-group><journal-title xml:lang="ru">Безопасность и риск фармакотерапии</journal-title><trans-title-group xml:lang="en"><trans-title>Safety and Risk of Pharmacotherapy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2312-7821</issn><issn pub-type="epub">2619-1164</issn><publisher><publisher-name>Federal State Budgetary Institution ‘Scientific Centre for Expert Evaluation of Medicinal Products’ of the Ministry of Health of the Russian Federation (FSBI ‘SCEEMP’)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30895/2312-7821-2025-457</article-id><article-id custom-type="elpub" pub-id-type="custom">safetyrisk-457</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>ТРАНСЛЯЦИОННАЯ МЕДИЦИНА: ДОКЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ, РЕГЕНЕРАТИВНАЯ ТЕРАПИЯ И ПРИНЦИПЫ 3R</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TRANSLATIONAL MEDICINE: PRECLINICAL STUDIES, REGENERATIVE THERAPY, AND THE 3R PRINCIPLES</subject></subj-group></article-categories><title-group><article-title>Изучение профиля безопасности оригинального препарата на основе секретома мезенхимных стромальных клеток при интратестикулярном введении кроликам</article-title><trans-title-group xml:lang="en"><trans-title>Safety Profile Evaluation of an Original Mesenchymal Stromal Cell Secretome-Based Medicinal Product after Intratesticular Injection in Rabbits</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7123-6374</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Монакова</surname><given-names>А. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Monakova</surname><given-names>А. О.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Монакова Анна Олеговна</p><p>Ломоносовский пр-т, д. 27, корп. 10, Москва, 119234</p></bio><bio xml:lang="en"><p>Anna O. Monakova</p><p>27/10 Lomonosovsky Ave, Moscow 119234</p></bio><email xlink:type="simple">monakova-anya@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/0000-0002-5744-7060</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Балабаньян</surname><given-names>В. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Balabanyan</surname><given-names>V. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Балабаньян Вадим Юрьевич, д-р фарм. наук</p><p>Ломоносовский пр-т, д. 27, корп. 10, Москва, 119234</p></bio><bio xml:lang="en"><p>Vadim Yu. Balabanyan, Dr. Sci. (Pharm.)</p><p>27/10 Lomonosovsky Ave, Moscow 119234</p></bio><email xlink:type="simple">bal.pharm@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/0000-0002-1009-3963</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вавилова</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vavilova</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вавилова Валерия Александровна</p><p>ул. Заводская, д. 3, к. 245, Всеволожский р-н, г.п. Кузьмоловский, Ленинградская обл., 188663</p></bio><bio xml:lang="en"><p>Valeria A. Vavilova</p><p>3/245 Zavodskaya St., Kuzmolovsky urban-type settlement, Vsevolozhsky district, Leningrad Region 188663</p></bio><email xlink:type="simple">vavilova.va@doclinika.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/0000-0002-2597-8879</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Басалова</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Basalova</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Басалова Наталия Андреевна, канд. биол. наук</p><p>Ломоносовский пр-т, д. 27, корп. 10, Москва, 119234</p></bio><bio xml:lang="en"><p>Nataliya A. Basalova, Cand. Sci. (Biol.)</p><p>27/10 Lomonosovsky Ave, Moscow 119234</p></bio><email xlink:type="simple">natalia_ba@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/0000-0002-5039-7152</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Попов</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Popov</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Попов Владимир Сергеевич, канд. биол. наук</p><p>Ломоносовский пр-т, д. 27, корп. 10, Москва, 119234</p></bio><bio xml:lang="en"><p>Vladimir S. Popov, Cand. Sci. (Biol.)</p><p>27/10 Lomonosovsky Ave, Moscow 119234</p></bio><email xlink:type="simple">galiantus@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0989-7825</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Акопян</surname><given-names>Ж. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Akopyan</surname><given-names>Zh. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Акопян Жанна Алексеевна, канд. мед. наук</p><p>Ломоносовский пр-т, д. 27, корп. 10, Москва, 119234</p></bio><bio xml:lang="en"><p>Zhanna A. Akopyan, Cand. Sci. (Med.)</p><p>27/10 Lomonosovsky Ave, Moscow 119234</p></bio><email xlink:type="simple">zhanna.fbm@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0696-1369</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ефименко</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Efimenko</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ефименко Анастасия Юрьевна, д-р мед. наук</p><p>Ломоносовский пр-т, д. 27, корп. 10, Москва, 119234</p></bio><bio xml:lang="en"><p>Anastasia Yu. Efimenko, Dr. Sci. (Med.)</p><p>27/10 Lomonosovsky Ave, Moscow 119234</p></bio><email xlink:type="simple">efimenkoay@my.msu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Московский государственный университет имени М.В. Ломоносова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Акционерное общество «Научно-производственное объединение «ДОМ ФАРМАЦИИ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research-and-manufacturing company “HOME OF PHARMACY”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>24</day><month>06</month><year>2025</year></pub-date><volume>13</volume><issue>2</issue><fpage>213</fpage><lpage>228</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Монакова А.О., Балабаньян В.Ю., Вавилова В.А., Басалова Н.А., Попов В.С., Акопян Ж.А., Ефименко А.Ю., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Монакова А.О., Балабаньян В.Ю., Вавилова В.А., Басалова Н.А., Попов В.С., Акопян Ж.А., Ефименко А.Ю.</copyright-holder><copyright-holder xml:lang="en">Monakova А.О., Balabanyan V.Y., Vavilova V.A., Basalova N.A., Popov V.S., Akopyan Z.A., Efimenko A.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://www.risksafety.ru/jour/article/view/457">https://www.risksafety.ru/jour/article/view/457</self-uri><abstract><sec><title>ВВЕДЕНИЕ</title><p>ВВЕДЕНИЕ. Данная работа является продолжением исследований оригинального биологического лекарственного препарата на основе секретома мезенхимных стромальных клеток (МСК) человека для восстановления сперматогенеза и фертильности. Для обеспечения безопасности препарата необходимо проведение доклинических исследований на двух видах животных: грызунах (проведено ранее) и негрызунах.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Изучение общетоксического действия, фармакологической безопасности, пирогенности, иммунотоксических свойств, репродуктивной токсичности и местной переносимости оригинального биологического препарата на основе секретома МСК при двукратном введении под белочную оболочку семенников половозрелым кроликам.</p></sec><sec><title>МАТЕРИАЛЫ И МЕТОДЫ</title><p>МАТЕРИАЛЫ И МЕТОДЫ. Исследование проведено на 50 самцах кроликов породы Советская шиншилла (5 групп по 10 животных). Исследуемый препарат МедиРег (восстановленный раствор лиофилизата секретома МСК в смеси с носителем, коллагеновым гелем Аппликолл) вводили под белочную оболочку семенника на 1 и 28 сутки в трех дозах: терапевтической (содержание эндотелиального фактора роста сосудов (VEGF) не менее 0,76 нг), превышающей терапевтическую в 1,5 раза (VEGF не менее 1,14 нг) и превышающей терапевтическую в 2,5 раза (VEGF не менее 1,9 нг). Контроль: интактные кролики и кролики, которым вводили смесь коллагенового геля Аппликолл и воды для инъекций. Оценивали клиническое состояние, температуру тела, результаты модифицированного теста Ирвина, электрокардиограмму, частоту сердечных сокращений, дыхательных движений, артериальное давление, показатели мочи, крови, биохимического анализа, состояние системы гемостаза, газовый состав крови, параметры спермограммы. Проводили патоморфологическое исследование органов. Срок наблюдения — 60 суток.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. На 3 сутки у животных в группах, получавших 1,5 и 2,5 терапевтической дозы препарата, обнаружено значимое понижение протромбинового времени, однако в период отсроченного наблюдения показатель снижался только в группе плацебо. При гистологическом исследовании у 1–2 из 5 (20–40%) кроликов во всех группах, кроме интактных, обнаружены единичные участки расслоения соединительнотканных перегородок между канальцами с формированием полости, заполненной рыхлым веществом с выраженным эозинофильным окрашиванием, и деформация канальца вдоль стенки полости. Вероятно, это вызвано механическим сдавлением канальца при введении большого объема вещества. У 2 из 5 (40%) животных группы плацебо выявлено обратимое увеличение пузырьковидных желез с выраженным расширением долек, содержащих прозрачный секрет. Гистологическая картина пузырьковидных желез соответствовала норме.</p></sec><sec><title>ВЫВОДЫ</title><p>ВЫВОДЫ. Препарат на основе секретома МСК и носитель в составе препарата (коллагеновый гель) при двукратном введении под белочную оболочку семенника кролика обладают приемлемым профилем безопасности.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>INTRODUCTION</title><p>INTRODUCTION. This work is a continuation of the studies of an original biological product based on the secretome of human mesenchymal stromal cells (MSCs) and intended for the restoration of spermatogenesis and fertility. To ensure the safety of the product, it is necessary to conduct preclinical studies in two types of animals, including rodents (the results of rodent studies were presented earlier) and non-rodents.</p></sec><sec><title>AIM</title><p>AIM. This study aimed to investigate the systemic toxicity, safety pharmacology, pyrogenicity, immunotoxicity, reproductive toxicity, and local tolerance of the original MSC secretome product in mature rabbits after two injections under the tunica albuginea of the testes.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS. The study was conducted in 50 male Soviet chinchilla rabbits (5 groups of 10 animals). The lyophilised MSC secretome product (MediReg) was reconstituted, mixed with collagen gel (Applicoll), and administered to rabbits subalbugineally on days 1 and 28 at a dose equal to the therapeutic dose (≥0.76 ng of vascular endothelial growth factor (VEGF)), 1.5 therapeutic doses (≥1.14 ng of VEGF), or 2.5 therapeutic doses (≥1.9 ng of VEGF). The control groups included intact rabbits and rabbits that received Applicoll mixed with water for injection. The animals were assessed in terms of their clinical condition, body temperature, electrocardiogram changes, heart and respiratory rates, blood pressure, modified Irwin test results, urinalysis findings, blood counts and biochemistry, haemostasis parameters, arterial blood gas measurements, and spermogram changes. Further, the animals were necropsied, and selected organs were weighed and subjected to histopathology. The follow-up period was 60 days.</p></sec><sec><title>RESULTS</title><p>RESULTS. On day 3, the groups receiving 1.5 and 2.5 therapeutic doses of the medicinal product demonstrated a significant decrease in prothrombin time; however, only the placebo group still had decreased prothrombin time levels during the follow-up period. The histological examination revealed occasional splitting areas in the intertubular connective tissue with the formation of cavities filled with a loose substance with pronounced eosinophilic staining and deformation of the tubules along the walls of the cavities as a result of compression in 1–2 of 5 (20–40%) rabbits in all groups that received either the medicinal product or placebo. This was probably caused by mechanical compression of the tubules by the administration of large volumes of substances. In the placebo group, 2 of 5 (40%) animals had a transient increase in the size of the vesicular glands; the lobules were markedly expanded and contained a transparent secretion. The histological appearance of the vesicular glands was normal.</p></sec><sec><title>CONCLUSIONS</title><p>CONCLUSIONS. When administered twice under the tunica albuginea of the testes of rabbits, the medicinal product comprising the MSC secretome and the Applicoll collagen gel carrier has an acceptable safety profile.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>мезенхимные стромальные клетки</kwd><kwd>секретом мезенхимных стромальных клеток</kwd><kwd>кролики</kwd><kwd>эндотелиальный фактор роста сосудов</kwd><kwd>фармакологическая безопасность</kwd><kwd>пирогенность</kwd><kwd>иммунотоксичность</kwd><kwd>местная переносимость</kwd><kwd>доклинические исследования</kwd></kwd-group><kwd-group xml:lang="en"><kwd>mesenchymal stromal cells</kwd><kwd>MSC</kwd><kwd>MSC secretome</kwd><kwd>rabbits</kwd><kwd>vascular endothelial growth factor</kwd><kwd>VEGF</kwd><kwd>safety pharmacology</kwd><kwd>pyrogenicity</kwd><kwd>immunotoxicity</kwd><kwd>local tolerance</kwd><kwd>preclinical studies</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания МГУ имени М.В. Ломоносова.</funding-statement><funding-statement xml:lang="en">This study was conducted under a State Assignment of Lomonosov Moscow State University.</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">Punab M, Poolamets O, Paju P, Vihljajev V, Pomm K, Ladva R, et al. 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