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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Kazan medical journal</journal-id><journal-title-group><journal-title xml:lang="en">Kazan medical journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Казанский медицинский журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0368-4814</issn><issn publication-format="electronic">2587-9359</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">636452</article-id><article-id pub-id-type="doi">10.17816/KMJ636452</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Theoretical and clinical medicine</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Теоретическая и клиническая медицина</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Age-related changes in hair structure in the parietal region of men</article-title><trans-title-group xml:lang="ru"><trans-title>Возрастные изменения строения волоса в теменной зоне у мужчин</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3152-8380</contrib-id><contrib-id contrib-id-type="scopus">57193925386</contrib-id><contrib-id contrib-id-type="researcherid">AAF-8828-2020</contrib-id><contrib-id contrib-id-type="spin">8298-5970</contrib-id><name-alternatives><name xml:lang="en"><surname>Balandin</surname><given-names>Anatolii A.</given-names></name><name xml:lang="ru"><surname>Баландин</surname><given-names>Анатолий Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med.), Assist. Prof., Depart. of Normal, Topographic and Clinical Anatomy, Operative Surgery</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент, каф. нормальной, топографической и клинической анатомии, оперативной хирургии</p></bio><email>balandinnauka@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-6629-5541</contrib-id><contrib-id contrib-id-type="scopus">58912796800</contrib-id><contrib-id contrib-id-type="spin">2618-5678</contrib-id><name-alternatives><name xml:lang="en"><surname>Tiunova</surname><given-names>Valensia V.</given-names></name><name xml:lang="ru"><surname>Тиунова</surname><given-names>Валенсия Васильевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Postgraduate student, Depart. of Normal, Topographic and Clinical Anatomy, Operative Surgery</p></bio><bio xml:lang="ru"><p>аспирант, каф. нормальной, топографической и клинической анатомии, оперативной хирургии</p></bio><email>yvalensiya23@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4856-9066</contrib-id><contrib-id contrib-id-type="spin">6484-8520</contrib-id><name-alternatives><name xml:lang="en"><surname>Balandina</surname><given-names>Irina A.</given-names></name><name xml:lang="ru"><surname>Баландина</surname><given-names>Ирина Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Med.), Prof., Head of Depart. of Normal, Topographic and Clinical Anatomy, Operative Surgery</p></bio><bio xml:lang="ru"><p>д-р мед. наук, проф., зав. каф., каф. нормальной, топографической и клинической анатомии, оперативной хирургии</p></bio><email>balandina_ia@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Perm State Medical University named after Academician E.A. Wagner</institution></aff><aff><institution xml:lang="ru">Пермский государственный медицинский университет им. академика Е.А. Вагнера</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-03-24" publication-format="electronic"><day>24</day><month>03</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-04-20" publication-format="electronic"><day>20</day><month>04</month><year>2025</year></pub-date><volume>106</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>195</fpage><lpage>200</lpage><history><date date-type="received" iso-8601-date="2024-09-24"><day>24</day><month>09</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-12-27"><day>27</day><month>12</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2028-04-20"/></permissions><self-uri xlink:href="https://kazanmedjournal.ru/kazanmedj/article/view/636452">https://kazanmedjournal.ru/kazanmedj/article/view/636452</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND</bold>: The study of age-related changes in the hair bulb and shaft is relevant due to the lack of data distinguishing normal from pathological hair characteristics across different age groups.</p> <p><bold>AIM</bold>: This study aimed to assess changes in hair bulb and shaft parameters in the parietal region across different male age groups.</p> <p><bold>MATERIAL</bold><bold> </bold><bold>AND</bold><bold> </bold><bold>METHODS</bold>: The study was based on microscopic examination of hair samples from 77 men who underwent evaluation at a medical center in Perm,in 2022–2023, specializing in the treatment of hair and scalp conditions. Participants were divided into three groups based on age. group 1 included 25 men aged 21 to 35 years (young adults). group 2 consisted of 27 men aged 36 to 59 years (middle-aged adults). group 3 included 25 men aged 61 to 74 years (elderly). Hair samples were obtained from the parietal region by gently extracting hairs in the late telogen phase, which were easily detached from the scalp and had fully developed bulbs and shafts. The width of the hair bulb and shaft was measured under a microscope. The width of the hair bulb was measured under a microscope as a line perpendicular to the shaft connecting the most distant points of the bulb. To determine shaft width, the height of the bulb was first measured as the distance from the most prominent point of the hair root to a perpendicular line connecting the narrowest part of the bulb. The shaft width was then measured at a distance from the narrowest point of the bulb equal to its height. It was defined as a line parallel to the bulb width, connecting the opposite sides of the hair shaft. Statistical analysis was performed using Student’s t test. Differences were considered statistically significant at p &lt; 0.05.</p> <p><bold>RESULTS</bold>: A 1.3% decrease in hair bulb width was observed from young to middle adulthood (p = 0.7597). A similar trend was observed from middle to older adulthood, with a 3.3% reduction in hair bulb width (p = 0.4853). No significant age-related changes in shaft width were observed. A 3.8% decrease was noted from young to middle adulthood (p = 0.4995), and a 2.2% decrease from middle to older adulthood (p = 0.6488).</p> <p><bold>CONCLUSION</bold>: Despite age-related vascular changes, the thickness of the hair bulb and shaft in the parietal region remains largely stable.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность</bold>.<bold> </bold>Актуальность исследования возрастных изменений волосяной луковицы и стержня волоса обусловлена отсутствием исследований, которые разграничивали бы норму и патологию волос в разном возрастном периоде.</p> <p><bold>Цель</bold>. Определить динамику показателей волосяной луковицы и стержня волоса в теменной области в возрастном аспекте у мужчин.</p> <p><bold>Материал и методы</bold>.<bold> </bold>В основу работы положены результаты микроскопического исследования волос у 77 мужчин, которые проходили обследование в медицинском центре города Перми в 2022–2023 гг., занимающемся лечением волос и кожи головы. Пациентов разделили на три группы в зависимости от возраста. В первую группу вошли 25 мужчин от 21 до 35 лет (первого периода зрелого возраста). Вторую группу составили 27 мужчин от 36 до 59 лет (второго периода зрелого возраста). В третью группу включили 25 мужчин от 61 до 74 лет (пожилого возраста). Забор волос производили в теменной области путём вытягивания легко отделяемых от кожи волос, находившихся в стадии позднего телогена с уже зрелой луковицей и стержнем. Определяли ширину луковицы и стержня волоса под микроскопом. Шириной волосяной луковицы считали линию, перпендикулярную стержню волоса, соединяющую её самые удалённые точки. Для измерения ширины стержня волоса измеряли высоту луковицы, которая определялась как линия от наиболее выступающей точки корня волоса до перпендикулярной линии, соединяющей наиболее узкую часть луковицы. Ширину стержня волоса измеряли на расстоянии, равном высоте луковицы от наиболее узкой её части. Она определялась как линия, параллельная ширине волосяной луковицы, соединяющая противоположные точки стержня волоса. Для проверки равенства средних использовали t-критерий Стьюдента. Достоверными считали отличия при <italic>p</italic> &lt;0,05.</p> <p><bold>Результаты</bold>. Тенденцию к уменьшению ширины луковицы волоса от первого ко второму периоду зрелого возраста установили на 1,3% (<italic>p</italic>=0,7597). Такая же тенденция выявлена от второго периода зрелого возраста к пожилому возрасту, при этом истончение луковицы произошло на 3,3% (<italic>p</italic>=0,4853). При анализе параметров ширины стержня волоса существенных изменений значений с возрастом не отмечено. Так, от первого ко второму периоду зрелого возраста стержень становится уже на 3,8% (<italic>p</italic>=0,4995), а от второго периода зрелого возраста к пожилому возрасту — уже на 2,2% (<italic>p</italic>=0,6488).</p> <p><bold>Заключение</bold>.<bold> </bold>Несмотря на возрастные изменения кровеносного и лимфатического русла толщина стержня и луковицы волоса остаётся практически неизменной.</p></trans-abstract><kwd-group xml:lang="en"><kwd>hair bulb</kwd><kwd>hair shaft</kwd><kwd>men</kwd><kwd>trichology</kwd><kwd>hair morphology</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>волосяная луковица</kwd><kwd>стержень волоса</kwd><kwd>мужчины</kwd><kwd>трихология</kwd><kwd>морфология волоса</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Bedretdinova AA. Hair transplantation as a solution option for hair alopecia. 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