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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Ekologiya cheloveka (Human Ecology)</journal-id><journal-title-group><journal-title xml:lang="en">Ekologiya cheloveka (Human Ecology)</journal-title><trans-title-group xml:lang="ru"><trans-title>Экология человека</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1728-0869</issn><issn publication-format="electronic">2949-1444</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">703622</article-id><article-id pub-id-type="doi">10.17816/humeco703622</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL STUDY ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Unknown</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Seasonal dynamics of endocrine parameters in young men and women in the Subarctic and their relationship with photoperiod and meteorological factors</article-title><trans-title-group xml:lang="ru"><trans-title>Сезонная динамика эндокринных показателей у молодых мужчин и женщин в Субарктике и их взаимосвязь с фотопериодом и метеорологическими факторами</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title/></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3097-9427</contrib-id><contrib-id contrib-id-type="scopus">57140775500</contrib-id><contrib-id contrib-id-type="researcherid">AGA-9279-2022</contrib-id><contrib-id contrib-id-type="spin">2220-1377</contrib-id><name-alternatives><name xml:lang="en"><surname>Molodovskaya</surname><given-names>Irina Nikolaevna</given-names></name><name xml:lang="ru"><surname>Молодовская</surname><given-names>Ирина Николаевна</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Candidate of Biological Sciences, Senior Researcher at the laboratory of endocrinology named after professor A. V. Tkachev of the Institute of physiology of natural adaptations</p></bio><bio xml:lang="ru"><p>кандидат биологических наук, старший научный сотрудник лаборатории эндокринологии имени профессора А.В. Ткачёва Института физиологии природных адаптаций</p></bio><email>pushistiy-86@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6133-8249</contrib-id><contrib-id contrib-id-type="spin">4062-8845</contrib-id><name-alternatives><name xml:lang="en"><surname>Zyabisheva</surname><given-names>Valentina Nikolaevna</given-names></name><name xml:lang="ru"><surname>Зябишева</surname><given-names>Валентина Николаевна</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Junior Researcher at the laboratory of endocrinology named after professor A. V. Tkachev of the Institute of physiology of natural adaptations</p></bio><bio xml:lang="ru"><p>младший научный сотрудник лаборатории эндокринологии имени проф. А.В. Ткачева Института физиологии природных адаптаций</p></bio><email>razvalush@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2097-3806</contrib-id><contrib-id contrib-id-type="spin">9490-2026</contrib-id><name-alternatives><name xml:lang="en"><surname>Tipisova</surname><given-names>Elena Vasil'evna</given-names></name><name xml:lang="ru"><surname>Типисова</surname><given-names>Елена Васильевна</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sc.(Biology), chief research scientist, Head of laboratory of endocrinology named after prof. A.V. Tkachev of the Institute of physiology of natural adaptations</p></bio><bio xml:lang="ru"><p>доктор биологических наук, главный научный сотрудник, заведующая лабораторией эндокринологии имени проф. А.В. Ткачева Института физиологии природных адаптаций</p></bio><email>tipisova@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">ФГБУН Федеральный исследовательский центр комплексного изучения Арктики имени академика Н.П. Лавёрова Уральского отделения Российской академии наук</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2026-04-09" publication-format="electronic"><day>09</day><month>04</month><year>2026</year></pub-date><volume>33</volume><issue>4</issue><issue-title xml:lang="ru"/><history><date date-type="received" iso-8601-date="2026-03-02"><day>02</day><month>03</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-03-17"><day>17</day><month>03</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; , Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; , Эко-Вектор</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; , Eco-Vector</copyright-statement><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><copyright-holder xml:lang="zh">Eco-Vector</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://hum-ecol.ru/1728-0869/article/view/703622">https://hum-ecol.ru/1728-0869/article/view/703622</self-uri><abstract xml:lang="en"><p><bold><italic>BACKGROUND: </italic></bold>Monitoring the hormonal profiles of the same individuals during contrasting seasonal changes in Subarctic climatic and geophysical factors allows for the identification of periods with reduced endocrine adaptive capacity, facilitating timely intervention for pre-pathological states.</p> <p><bold><italic>AIM:</italic></bold> To assess the impact of seasonal meteorological dynamics on serum thyroid and sex hormone levels in a subarctic temperate continental climate of the Subarctic.</p> <p><bold><italic>METHODS:</italic></bold> A prospective, uncontrolled, analytical study was conducted among 40 clinically healthy residents of Arkhangelsk (20 men and 20 women). Blood samples were collected every 3 months for a year. Relationships between hormonal and climatic data were assessed using the Spearman correlation coefficient.</p> <p><bold><italic>RESULTS:</italic></bold> Statistically significant variability was found in the levels of total iodothyronine fractions, thyroxine-binding globulin, estradiol, and antisperm antibodies (ASAB) in the men studied, showing correlations with climatic factors. Free iodothyronine levels in men exhibited a low-amplitude year-round rhythm and appeared independent of seasonal factors. In contrast, in women, both fractions positively correlated with daylength, while free thyroxine negatively correlated with air humidity. Overall, thyroid function parameters, regardless of gender, were positively correlated with daylength and air temperature, and negatively correlated with atmospheric pressure and humidity. The study suggests that, unlike in women, men exhibit minor circannual fluctuations in estradiol and ASAB levels that correspond to changes in daylength, atmospheric pressure, and air temperature.</p> <p><bold><italic>CONCLUSION:</italic></bold> The findings indicate that the summer season, characterized by a long photoperiod, is associated with increased activity of the pituitary-thyroid axis. In contrast, ovarian function shows no significant correlation with daylength.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> Изучение гормонального профиля одних и тех же лиц в условиях контрастных сезонных изменений климатогеофизических факторов Субарктики позволяет эффективно выявлять периоды снижения адаптивных возможностей эндокринной системы снижены, что поможет своевременно проводить коррекцию предпатологических состояний.</p> <p><bold>Цель</bold><bold><italic>.</italic></bold> Изучить влияние сезонной динамики метеорологических факторов умеренно-континентального климата Субарктики на сывороточные уровни тиреоидных и половых гормонов.</p> <p><bold>Материал и методы.</bold> Проведено аналитическое проспективное неконтролируемое исследование с участием 40 клинически здоровых жителей г. Архангельска, в том числе 20 мужчин и 20 женщин<italic>.</italic> Образцы крови собирали каждые 3 месяца в течение года. Взаимосвязи между гормональными и климатическими показателями оценивали с помощью коэффициента корреляции Спирмена.</p> <p><bold>Результаты</bold><bold><italic>.</italic></bold> У обследованных мужчин выявлена статистически значимая вариабельность уровней общих фракций йодтиронинов, тироксинсвязывающего глобулина, эстрадиола и антиспермальных антител (АСАТ), коррелирующая с факторами климата. Уровни свободных фракций йодтиронинов у мужчин характеризуются незначительной величиной амплитуды круглогодичного ритма и, вероятно, не зависят от сезонных факторов. Напротив, у женщин содержание свободных фракций положительно коррелирует с длиной светового дня, а уровень свободного тироксина — отрицательно с влажностью воздуха. В целом показатели функции щитовидной железы независимо от пола демонстрируют прямую взаимосвязь с длиной светового дня и температурой воздуха, и обратную — с атмосферным давлением и влажностью. У мужчин, в отличие от женщин, обнаружены цирканнуальные различия в уровнях эстрадиола и АСАТ, сопоставимые с изменениями продолжительности светового дня, колебаниями атмосферного давления и температуры воздуха.</p> <p><bold>Заключение.</bold> Полученные данные свидетельствуют о том, что летний период с длинным фотопериодом ассоциирован с повышенной активностью гипофизарно-тиреоидной оси, в то время как функция яичников не проявляет значимой зависимости от продолжительности светового дня.</p></trans-abstract><trans-abstract xml:lang="zh"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>sex hormones</kwd><kwd>thyroid hormones</kwd><kwd>circannual rhythm</kwd><kwd>climate</kwd><kwd>European north</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>половые гормоны</kwd><kwd>тиреоидные гормоны</kwd><kwd>цирканнуальный ритм</kwd><kwd>климат</kwd><kwd>Европейский север</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The work was carried out within the framework of the program of fundamental scientific research of FCIAR UrB RAS according to the research project № 125021902585-2.</funding-statement><funding-statement xml:lang="ru">Работа выполнена в рамках программы ФНИР ФГБУН ФИЦКИА УрО РАН (номер гос. регистрации 125021902585-2) с использованием оборудования ЦКП КТ РФ-Арктика (ФИЦКИА УрО РАН).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">1.	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