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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">medgen</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская генетика</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Genetics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7998</issn><publisher><publisher-name>Publishing House «Genius Media» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25557/2073-7998.2025.09.107-110</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-3190</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>КРАТКОЕ СООБЩЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BRIEF REPORT</subject></subj-group></article-categories><title-group><article-title>Зависимые от возраста пациента изменения длины теломер на разных этапах дифференцировки сперматогенных клеток при азооспермии</article-title><trans-title-group xml:lang="en"><trans-title>Age-dependent telomere length changes in differentiating spermatogenic cells in azoospermic patients</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>Сагурова</surname><given-names>Я. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Sagurova</surname><given-names>Y. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>199034, г. Санкт-Петербург, Менделеевская линия, д.3</p></bio><bio xml:lang="en"><p>3, Mendeleyevskaya line, Saint Petersburg, 199034</p></bio><email xlink:type="simple">yanina.sagurova96@mail.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>Пендина</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pendina</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>199034, г. Санкт-Петербург, Менделеевская линия, д.3</p></bio><bio xml:lang="en"><p>3, Mendeleyevskaya line, Saint Petersburg, 199034</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чугунова</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chugunova</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>199034, г. Санкт-Петербург, Менделеевская линия, д.3</p></bio><bio xml:lang="en"><p>3, Mendeleyevskaya line, Saint Petersburg, 199034</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крапивин</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Krapivin</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>199034, г. Санкт-Петербург, Менделеевская линия, д.3</p></bio><bio xml:lang="en"><p>3, Mendeleyevskaya line, Saint Petersburg, 199034</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Комарова</surname><given-names>Е. М</given-names></name><name name-style="western" xml:lang="en"><surname>Komarova</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>199034, г. Санкт-Петербург, Менделеевская линия, д.3</p></bio><bio xml:lang="en"><p>3, Mendeleyevskaya line, Saint Petersburg, 199034</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ефимова</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Efimova</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>199034, г. Санкт-Петербург, Менделеевская линия, д.3</p></bio><bio xml:lang="en"><p>3, Mendeleyevskaya line, Saint Petersburg, 199034</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ Научно-исследовательский институт акушерства, гинекологии и репродуктологии имени Д.О. Отта</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Obstetrics and Gynecology named after D.O. Ott</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>13</day><month>11</month><year>2025</year></pub-date><volume>24</volume><issue>9</issue><fpage>107</fpage><lpage>110</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сагурова Я.М., Пендина А.А., Чугунова Т.В., Крапивин М.И., Комарова Е.М., Ефимова О.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Сагурова Я.М., Пендина А.А., Чугунова Т.В., Крапивин М.И., Комарова Е.М., Ефимова О.А.</copyright-holder><copyright-holder xml:lang="en">Sagurova Y.M., Pendina A.A., Chugunova T.V., Krapivin M.I., Komarova E.M., Efimova O.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://www.medgen-journal.ru/jour/article/view/3190">https://www.medgen-journal.ru/jour/article/view/3190</self-uri><abstract><sec><title>Введение</title><p>Введение. Теломеры представляют собой концевые участки хромосом, которые играют ключевую роль в клеточном старении и поддержании геномной стабильности. В то время как в соматических клетках их длина сокращается с возрастом, в сперматозоидах наблюдается обратная тенденция. Неполной остается информация о том, как длина теломер изменяется в ходе сперматогенеза человека и зависит ли она от возраста.</p></sec><sec><title>Цель</title><p>Цель: проанализировать, как изменяется длина теломер при дифференцировке сперматогенных клеток, и оценить ее ассоциацию с возрастом пациентов при азооспермии.</p></sec><sec><title>Методы</title><p>Методы. Исследование проведено на образцах биоптатов семенников 34 пациентов с азооспермией (возраст 24-60 лет). Из образцов получали цитогенетические препараты колхицинированных митотических и мейотических хромосом. Длину теломер определяли методом количественной флуоресцентной гибридизации in situ (Q-FISH) на хромосомах сперматогониев (n=483), сперматоцитов I (n=305) и сперматоцитов II (n=396).</p></sec><sec><title>Результаты</title><p>Результаты. Показано, что длина теломер сперматогониев меньше, чем таковая сперматоцитов I (p=0,0234), а длина теломер сперматоцитов I меньше, чем сперматоцитов II (p=0,0107). Установлена положительная корреляция между длиной теломер в сперматоцитах II и возрастом пациентов (ρ=0,3966; p=0,0496). Взаимосвязи возраста пациентов с длиной теломер в сперматогониях и сперматоцитах I не обнаружено (ρ=0,0643; p=0,7177 и ρ=-0,03297; p=0,8531, соответственно).</p></sec><sec><title>Заключение</title><p>Заключение. Таким образом, при азооспермии длина теломер в сперматогенных клетках увеличивается от сперматогониев к сперматоцитам I, а затем к сперматоцитам II, и в сперматоцитах II она тем больше, чем старше пациент.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. Telomeres are the terminal regions of chromosomes that play a crucial role in cellular aging and maintaining genomic stability. While telomere length decreases with age in somatic cells, an opposite trend is observed in spermatozoa. However, information on how telomere length changes during human spermatogenesis and its relationship with age remains incomplete.</p></sec><sec><title>Objective</title><p>Objective: To analyze the changes in telomere length during the differentiation of spermatogenic cells and to evaluate its association with the age in azoospermic patients.</p></sec><sec><title>Methods</title><p>Methods. The study was performed on testicular biopsy samples from 34 azoospermic patients aged 24-60 years. Cytogenetic preparations of colchicine-treated mitotic and meiotic metaphase plates were obtained from the samples. Telomere length was measured using quantitative fluorescence in situ hybridization (Q-FISH) on chromosomes from spermatogonia (n=483), spermatocytes I (n=305), and spermatocytes II (n=396).</p></sec><sec><title>Results</title><p>Results. The telomere length in spermatogonia was shorter than in spermatocytes I (p=0.0234), and the telomere length in spermatocytes I was shorter than in spermatocytes II (p=0.0107). A positive correlation was observed between telomere length in spermatocytes II and the patients’ age (ρ=0.3966; p=0.0496). No association was found between the patients’ age and telomere length either in spermatogonia or in spermatocytes I (ρ=0.0643; p=0.7177 and ρ=-0.03297; p=0.8531, respectively).</p></sec><sec><title>Conclusion</title><p>Conclusion. Thus, in azoospermia, telomere length in spermatogenic cells increases from spermatogonia to spermatocytes I, and then to spermatocytes II; in spermatocytes II, it also increases with the patients’ ageing.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>длина теломер</kwd><kwd>сперматогенез</kwd><kwd>азооспермия</kwd><kwd>сперматогонии</kwd><kwd>сперматоциты I</kwd><kwd>сперматоциты II</kwd></kwd-group><kwd-group xml:lang="en"><kwd>telomere length</kwd><kwd>spermatogenesis</kwd><kwd>azoospermia</kwd><kwd>spermatogonia</kwd><kwd>spermatocytes I</kwd><kwd>spermatocytes II</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 24-15-00402, https://rscf.ru/ project/24-15-00402/.</funding-statement><funding-statement xml:lang="en">This research was funded by Russian Science Foundation, grant number 24-15-00402, https://rscf.ru/project/24-15-00402/.</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">Turner K.J., Vasu V., Griffin D.K. Telomere Biology and Human Phenotype. Cells. 2019;8(1):73. doi:10.3390/cells8010073</mixed-citation><mixed-citation xml:lang="en">Turner K.J., Vasu V., Griffin D.K. Telomere Biology and Human Phenotype. Cells. 2019;8(1):73. doi:10.3390/cells8010073</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Lindsey J., McGill N.I., Lindsey L.A., et al. In vivo loss of telomeric repeats with age in humans. Mutation Research. 1991; 256:45–48. doi: 10.1016/0921-8734(91)90032-7.</mixed-citation><mixed-citation xml:lang="en">Lindsey J., McGill N.I., Lindsey L.A., et al. In vivo loss of telomeric repeats with age in humans. Mutation Research. 1991; 256:45–48. doi: 10.1016/0921-8734(91)90032-7.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Takubo K., Nakamura K.I., Izumiyama N., et al. Telomere shortening with aging in human liver. The journals of gerontology. Series A, Biological sciences and medical sciences. 2000; 55:B533– B536. doi: 10.1093/gerona/55.11.B533.</mixed-citation><mixed-citation xml:lang="en">Takubo K., Nakamura K.I., Izumiyama N., et al. Telomere shortening with aging in human liver. The journals of gerontology. Series A, Biological sciences and medical sciences. 2000; 55:B533– B536. doi: 10.1093/gerona/55.11.B533.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Kimura M., Cherkas L.F., Kato B.S., et al. Offspring’s leukocyte telomere length, paternal age, and telomere elongation in sperm. PLoS Genetics. 2008; 4(2):e37. doi: 10.1371/journal.pgen.0040037.</mixed-citation><mixed-citation xml:lang="en">Kimura M., Cherkas L.F., Kato B.S., et al. Offspring’s leukocyte telomere length, paternal age, and telomere elongation in sperm. PLoS Genetics. 2008; 4(2):e37. doi: 10.1371/journal.pgen.0040037.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Aston K.I., Hunt S.C., Susser E., et al. Divergence of sperm and leukocyte age-dependent telomere dynamics: implications for maledriven evolution of telomere length in humans. Molecular human reproduction. 2012; 18(10):517–522. doi: 10.1093/molehr/gas028.</mixed-citation><mixed-citation xml:lang="en">Aston K.I., Hunt S.C., Susser E., et al. Divergence of sperm and leukocyte age-dependent telomere dynamics: implications for maledriven evolution of telomere length in humans. Molecular human reproduction. 2012; 18(10):517–522. doi: 10.1093/molehr/gas028.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Pendina A.A., Krapivin M.I., Sagurova Y.M., et al. Telomere Length in Human Spermatogenic Cells as a New Potential Predictor of Clinical Outcomes in ART Treatment with Intracytoplasmic Injection of Testicular Spermatozoa. International journal of molecular sciences. 2023; 24(13): 10427. doi:10.3390/ijms241310427</mixed-citation><mixed-citation xml:lang="en">Pendina A.A., Krapivin M.I., Sagurova Y.M., et al. Telomere Length in Human Spermatogenic Cells as a New Potential Predictor of Clinical Outcomes in ART Treatment with Intracytoplasmic Injection of Testicular Spermatozoa. International journal of molecular sciences. 2023; 24(13): 10427. doi:10.3390/ijms241310427</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Temura K., Ogura A., Cheong C., et al. Dynamic rearrangement of telomeres during spermatogenesis in mice. Developmental biology. 2005; 281(2):196–207. doi:10.1016/j.ydbio.2005.02.025</mixed-citation><mixed-citation xml:lang="en">Temura K., Ogura A., Cheong C., et al. Dynamic rearrangement of telomeres during spermatogenesis in mice. Developmental biology. 2005; 281(2):196–207. doi:10.1016/j.ydbio.2005.02.025</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Achi M.V., Ravindranath N., Dym M. Telomere length in male germ cells is inversely correlated with telomerase activity. Biology of Reproduction. 2000; 63(2):591-598.</mixed-citation><mixed-citation xml:lang="en">Achi M.V., Ravindranath N., Dym M. Telomere length in male germ cells is inversely correlated with telomerase activity. Biology of Reproduction. 2000; 63(2):591-598.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Pendina A.A., Krapivin M.I., Efimova O.A., et al. Telomere Length in Metaphase Chromosomes of Human Triploid Zygotes. International journal of molecular sciences. 2021; 22(11):5579. doi: 10.3390/ijms22115579</mixed-citation><mixed-citation xml:lang="en">Pendina A.A., Krapivin M.I., Efimova O.A., et al. Telomere Length in Metaphase Chromosomes of Human Triploid Zygotes. International journal of molecular sciences. 2021; 22(11):5579. doi: 10.3390/ijms22115579</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Tire B., Ozturk S. Potential effects of assisted reproductive technology on telomere length and telomerase activity in human oocytes and early embryos. Journal of Ovarian Research. 2023; 16(1):130. https://doi.org/10.1186/s13048-023-01211-4</mixed-citation><mixed-citation xml:lang="en">Tire B., Ozturk S. Potential effects of assisted reproductive technology on telomere length and telomerase activity in human oocytes and early embryos. Journal of Ovarian Research. 2023; 16(1):130. https://doi.org/10.1186/s13048-023-01211-4</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Antunes D.M., Kalmbach K.H., Wang F., et al. A single-cell assay for telomere DNA content shows increasing telomere length heterogeneity, as well as increasing mean telomere length in human spermatozoa with advancing age. Journal of Assisted Reproduction and Genetics. 2015; 32:1685–1690. doi: 10.1007/s10815-015-0574-3.</mixed-citation><mixed-citation xml:lang="en">Antunes D.M., Kalmbach K.H., Wang F., et al. A single-cell assay for telomere DNA content shows increasing telomere length heterogeneity, as well as increasing mean telomere length in human spermatozoa with advancing age. Journal of Assisted Reproduction and Genetics. 2015; 32:1685–1690. doi: 10.1007/s10815-015-0574-3.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
