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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">mimmun</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская иммунология</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Immunology (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1563-0625</issn><issn pub-type="epub">2313-741X</issn><publisher><publisher-name>SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15789/1563-0625-EFO-3297</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-3297</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>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SHORT COMMUNICATIONS</subject></subj-group></article-categories><title-group><article-title>Особенности экспрессии микроРНК miR-155 и miR-28 у пациентов с Long COVID и гипертонической болезнью</article-title><trans-title-group xml:lang="en"><trans-title>Expression features of miR-155 and miR-28 microRNAs in patients with long COVID and arterial hypertension</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5593-1740</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Агзамходжаева</surname><given-names>Н. У.</given-names></name><name name-style="western" xml:lang="en"><surname>Agzamxodjayeva</surname><given-names>N. U.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Агзамходжаева Нозимахон Улугбековна – к.м.н., доцент кафедры внутренних болезней Profi University; соискатель Института иммунологии и геномики человека Академии наук Республики Узбекистан</p><p>100213, г. Ташкент, ул. Хусайн Байкаро, 117.</p></bio><bio xml:lang="en"><p>Nozimaxon U. Agzamxodjayeva - PhD (Medicine), Associate Professor, Department of Internal Diseases, Profi University; Applicant, Institute of Human Immunology and Genomics, Academy of Sciences of the Republic of Uzbekistan</p><p>117 Khusain Baikaro St Tashkent 100213 </p></bio><email xlink:type="simple">dr.nozimaulugbekovna@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/0000-0002-5982-945X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рузибакиева</surname><given-names>М. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Ruzibakieva</surname><given-names>M. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Д.м.н., ведущий научный сотрудник отдела клеточной терапии </p><p>Ташкент</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Leading Researcher, Department of Cell Therapy</p><p>Tashkent </p></bio><email xlink:type="simple">malika-ruz@hotmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6220-4653</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абидова</surname><given-names>Д. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Abidova</surname><given-names>D. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Д.м.н., ведущий научный сотрудник отдела поликлиники</p><p>Ташкент </p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Leading Researcher, Polyclinic Department</p><p>Tashkent </p></bio><email xlink:type="simple">abidova.dilorom@bk.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1663-8669</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Исламова</surname><given-names>Р. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Islamova</surname><given-names>R. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Заведующая кафедрой внутренних болезней </p><p>Ташкент</p></bio><bio xml:lang="en"><p>Head of the Department of Internal Diseases </p><p>Tashkent </p></bio><email xlink:type="simple">islamovaranokarimovna@gmail.com</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт иммунологии и геномики человека, Академия наук Республики Узбекистан;&#13;
Profi University</institution><country>Узбекистан</country></aff><aff xml:lang="en"><institution>Institute of Human Immunology and Genomics, Academy of Sciences of the Republic of Uzbekistan;&#13;
Profi University</institution><country>Uzbekistan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт иммунологии и геномики человека, Академия наук Республики Узбекистан</institution><country>Узбекистан</country></aff><aff xml:lang="en"><institution>Institute of Human Immunology and Genomics, Academy of Sciences of the Republic of Uzbekistan</institution><country>Uzbekistan</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Республиканский специализированный научно-практический медицинский центр кардиологии</institution><country>Узбекистан</country></aff><aff xml:lang="en"><institution>Republican Specialized Scientific and Practical Medical Center for Cardiology</institution><country>Uzbekistan</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Profi University</institution><country>Узбекистан</country></aff><aff xml:lang="en"><institution>Profi University</institution><country>Uzbekistan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>20</day><month>06</month><year>2026</year></pub-date><volume>28</volume><issue>2</issue><fpage>457</fpage><lpage>462</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Агзамходжаева Н.У., Рузибакиева М.Р., Абидова Д.Э., Исламова Р.К., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Агзамходжаева Н.У., Рузибакиева М.Р., Абидова Д.Э., Исламова Р.К.</copyright-holder><copyright-holder xml:lang="en">Agzamxodjayeva N.U., Ruzibakieva M.R., Abidova D.E., Islamova R.K.</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.mimmun.ru/mimmun/article/view/3297">https://www.mimmun.ru/mimmun/article/view/3297</self-uri><abstract><p>Постковидный синдром, или Long COVID, сопровождается длительным системным воспалением и сосудистой дисфункцией, особенно выраженными у пациентов с артериальной гипертонией. МикроРНК, в том числе miR-155 и miR-28, рассматриваются как потенциальные молекулярные маркеры указанных патологических состояний. Целью настоящего исследования являлась оценка экспрессии miR-155 и miR-28 у пациентов с Long COVID в зависимости от наличия гипертонической болезни, а также анализ их взаимосвязи с показателями воспаления и нарушениями сосудистой функции. В исследование были включены 102 пациента, обследованные спустя не менее четырех недель после перенесенной коронавирусной инфекции. Были сформированы две группы: пациенты с гипертонией (50 человек) и без нее (52 человека). Определение уровней miR-155 и miR-28 в плазме крови проводилось методом количественной полимеразной цепной реакции в режиме обратной транскрипции. Проведены статистические расчеты и корреляционный анализ. У пациентов с артериальной гипертонией выявлена повышенная экспрессия miR-155 и снижение уровней miR-28, что сопровождалось увеличением концентрации маркеров воспаления, таких как С-реактивный белок, интерлейкин-6, натрийуретический пептид типа B и продуктов деградации фибрина. У пациентов без гипертонии эти показатели были более стабильными. Полученные данные указывают на то, что miR-155 и miR-28 могут отражать степень воспалительной и сосудистой активации у пациентов с Long COVID. Ассоциация гипертонии с нарушением регуляции указанных микроРНК подчеркивает их потенциальную значимость для стратификации риска и мониторинга состояния пациентов после перенесенной инфекции.</p></abstract><trans-abstract xml:lang="en"><p>Post-COVID syndrome, known as long COVID, is characterized by prolonged systemic inflammation and vascular dysfunction, particularly in individuals with arterial hypertension. MicroRNAs, such as miR-155 and miR-28, are regarded as potential molecular markers of this pathological condition. This study aimed to evaluate the expression patterns of miR-155 and miR-28 in patients with long COVID depending on the presence of hypertension, and to evaluate their associations with markers of inflammation and vascular impairment. A total of 102 patients were examined at least four weeks after recovery from COVID-19. Two groups of patients were formed, i.e., individuals with or without arterial hypertension (respectively, 50 and 52 subjects). Plasma levels of miR-155 and miR-28 were measured using reverse transcription quantitative PCR. General statistical and correlation analyses were performed. The results demonstrated that patients with hypertension exhibited elevated expression of miR-155 and reduced levels of miR-28, along with increased concentrations of inflammatory markers such as C-reactive protein, interleukin-6, B-type natriuretic peptide, and fibrin degradation products. In contrast, normotensive patients showed more stable biomarker profiles. These findings suggest that miR-155 and miR-28 reflect the degree of inflammatory and vascular activation in long COVID. The association between hypertension and dysregulation of these microRNAs highlights their potential utility for risk stratification and post-infection monitoring in affected individuals.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>long COVID</kwd><kwd>микроРНК</kwd><kwd>miR-155</kwd><kwd>miR-28</kwd><kwd>гипертоническая болезнь</kwd><kwd>сосудистая дисфункция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>long COVID</kwd><kwd>microRNA</kwd><kwd>miR-155</kwd><kwd>miR-28</kwd><kwd>inflammation</kwd><kwd>arterial hypertension</kwd><kwd>vascular dysfunction</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">Blüml S., Bonelli M., Niederreiter B., Puchner A., Mayr G., Hayer S., Koenders M.I., van den Berg W.B., Smolen J., Redlich K. Essential role of microRNA-155 in the pathogenesis of autoimmune arthritis in mice. 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