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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">medparasitology</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская паразитология и паразитарные болезни</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Parasitology and Parasitic Diseases</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0025-8326</issn><issn pub-type="epub">2713-1777</issn><publisher><publisher-name>Научно-образовательный паразитологический центр им. П.Г. Сергиева</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33092/0025-8326mp2023.2.14-22</article-id><article-id custom-type="elpub" pub-id-type="custom">medparasitology-76</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>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Анализ активности токсоплазменной инвазии у людей пожилого и старческого возраста</article-title><trans-title-group xml:lang="en"><trans-title>Analysis of the activity of toxoplasma invasion in elderly and old people</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>Гончаров</surname><given-names>Д. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Goncharov</surname><given-names>D. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</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>Аббазова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Abbazova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</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>Зоркина</surname><given-names>Я. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zorkina</surname><given-names>Y. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Романов</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Romanov</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Андреюк</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Andreyuk</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Степанова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Stepanova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баранец</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Baranets</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</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>Костюк</surname><given-names>Г. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kostyuk</surname><given-names>G. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Морозова</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Morozova</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абрамова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Abramova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-7"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курмышев</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurmyshev</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савилов</surname><given-names>В. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Savilov</surname><given-names>V. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Андрющенко</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Andriushchenko</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карпенко</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Karpenko</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Габриэлян</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Gabrielyan</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-8"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «Национальный исследовательский центр эпидемиологии и микробиологии им. почетного академика Н.Ф. Гамалеи» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FSBI National Research Center for Epidemiology and Microbiology named after N.N. honorary academician N.F. Gamaleya” of the Ministry of Health of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ГБУЗ «Психиатрическая клиническая больница №1 им. Н.А. Алексеева Департамента здравоохранения г. Москвы»; Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр психиатрии и наркологии им. В.П. Сербского» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>GBUZ "Psychiatric Clinical Hospital No. 1 named after Alekseev of the Department of Health of Moscow; Federal State Budgetary Institution "National Medical Research Center for Psychiatry and Narcology named after N.N. V.P. Serbian” of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное научное учреждение «Научный центр психического здоровья» РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Budgetary Scientific Institution "Scientific Center for Mental Health" RAS</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ГБУЗ «Психиатрическая клиническая больница №1 им. Н.А.  Алексеева Департамента здравоохранения г. Москвы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>GBUZ "Psychiatric Clinical Hospital No. 1 named after Alekseev of the Department of Health of Moscow</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Институт медицинской паразитологии, тропических и трансмиссивных болезней им. Марциновского Первого МГМУ им. И.М. Сеченова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Medical Parasitology, Tropical and Vector-borne Diseases Marcinovsky First Moscow State Medical University. THEM. Sechenov</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>ГБУЗ «Психиатрическая клиническая больница №1 им. Н.А. Алексеева Департамента здравоохранения г. Москвы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>GBUZ "Psychiatric Clinical Hospital No. 1 named after Alekseev of the Department of Health of Moscow</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-7"><aff xml:lang="ru"><institution>ГБУЗ «Психиатрическая клиническая больница №1 им. Н.А. Алексеева Департамента здравоохранения г. Москвы»; Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр психиатрии и наркологии им. В.П. Сербского» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>GBUZ "Psychiatric Clinical Hospital No. 1 named after Alekseev of the Department of Health of Moscow;Federal State Budgetary Institution "National Medical Research Center for Psychiatry and Narcology named after N.N. V.P. Serbian” of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-8"><aff xml:lang="ru"><institution>ФГБУ «Национальный медицинский исследовательский центр трансплантологии и искусственных органов имени академика В.И. Шумакова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FGBU "National Medical Research Center for Transplantology and Artificial Organs named after Academician V.I. Shumakov</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>29</day><month>04</month><year>2026</year></pub-date><volume>0</volume><issue>2</issue><fpage>14</fpage><lpage>22</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Научно-образовательный паразитологический центр им. П.Г. Сергиева, 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Научно-образовательный паразитологический центр им. П.Г. Сергиева</copyright-holder><copyright-holder xml:lang="en">Научно-образовательный паразитологический центр им. П.Г. Сергиева</copyright-holder><license xlink:href="https://www.medparasitology.com/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.medparasitology.com/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.medparasitology.com/jour/article/view/76">https://www.medparasitology.com/jour/article/view/76</self-uri><abstract><p>Лица старшей возрастной группы в силу ослабления иммунитета являются группой риска по токсоплазмозу: с возрастом возрастает уровень серопозитивности и риск реактивации инвазии у людей с хронической инвазией. Но в клинико-эпидемиологическом отношении данная группа недостаточно изучена.</p><sec><title>Цель исследования</title><p>Цель исследования. Определение уровня серопозитивности и степени активности токсоплазменной инвазии у лиц старшей возрастной категории без патологии, а также в сочетании с психо-неврологической симптоматикой или трансплантацией солидных органов. </p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Методом ИФА определяли различные классы антител к T. gondii в сыворотках крови от 614 человек в возрасте от 60 до 93 лет (условно-здоровые лица, пациенты: с нейропсихиатрической патологией, с когнитивным снижением, после трансплантации органов).</p></sec><sec><title>Результаты</title><p>Результаты. Антитела IgG к T. gondii выявили у 51,5 % обследованных людей. Отмечена тенденция увеличения инвазированности с возраста 60-64 лет до 75-79 лет. Случаев острого токсоплазмоза выявлено крайне мало; более значимым было обнаружение у 10,1 % обследованных антител IgA – маркера реактивации. Наибольшее число лиц с IgA отмечено у пациентов после трансплантации, с нейропсихиатрической патологией и когнитивным снижением.</p></sec><sec><title>Обсуждение</title><p>Обсуждение. Поскольку токсоплазмоз является латентной инфекцией головного мозга и доказана его ассоциация с рядом психических и нейродегенеративных заболеваний, то высокая зараженность T. gondii пожилых лиц и наличие у них маркеров реактивации предполагает систематический мониторинг инвазии, особенно при сочетании с патологией ЦНС и снижением иммунитета. Люди в возрасте «60+» с определенным клиническим анамнезом являются группой риска при наличии паразита в организме.</p></sec><sec><title>Заключение</title><p>Заключение. Обнаружение связи между токсоплазмозом и психическими расстройствами у иммунокомпетентных индивидуумов является основой для дальнейшего мониторинга таких ассоциаций с целью их профилактики и лечения.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Persons of the older age group, due to weakened immunity, are at risk for toxoplasmosis: with age, the level of seropositivity and the risk of reactivation of infection in people with chronic infection increases. But in clinical and epidemiological terms, this group has not been suﬃciently studied.</p></sec><sec><title>Purpose of the study</title><p>Purpose of the study. Determination of the level of seropositivity and the degree of activity of toxoplasma invasion in persons of the older age category without pathology, as well as in combination with psychoneurological symptoms or transplantation of solid organs.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The ELISA method was used to determine various classes of antibodies to T. gondii in the blood sera of 614 people aged 60 to 93 years (conditionally healthy individuals, patients with neuropsychiatric pathology, with cognitive decline, after organ transplantation).</p></sec><sec><title>Results</title><p>Results. IgG antibodies to T. gondii were detected in 51,5 % of the examined people. There was a trend of increasing infection from the age of 60-64 years to 75-79 years. Very few cases of acute toxoplasmosis have been identiﬁed; more signiﬁcant was the detection of IgA antibodies, a reactivation marker, in 10,1 % of the examined antibodies. The largest number of individuals with IgA was observed in patients after transplantation, with neuropsychiatric pathology and cognitive decline.</p></sec><sec><title>Discussion</title><p>Discussion. Since toxoplasmosis is a latent infection of the brain and its association with a number of mental and neurodegenerative diseases has been proven, the high T. gondii infection in elderly people and the presence of reactivation markers in them suggests systematic monitoring of invasion, especially when combined with CNS pathology and reduced immunity. People aged "60+" with a certain clinical history are at risk in the presence of a parasite in the body.</p></sec><sec><title>Conclusion</title><p>Conclusion. Finding an association between toxoplasmosis and psychiatric disorders in immunocompetent individuals is the basis for further monitoring of such associations with a view to their prevention and treatment.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>токсоплазмоз</kwd><kwd>Toxoplasma gondii</kwd><kwd>психо-неврологические заболевания</kwd><kwd>лица пожилого возраста</kwd><kwd>выявление антител</kwd></kwd-group><kwd-group xml:lang="en"><kwd>toxoplasmosis</kwd><kwd>Toxoplasma gondii</kwd><kwd>psychoneurological diseases</kwd><kwd>elderly people</kwd><kwd>detection of antibodies</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">Xiao J., Prandovszky E., Kannan G., Pletnikov M.V., Dickerson F., Severance E.G., Yolken R.H. Toxoplasma gondii: Biological Parameters of the Connection to Schizophrenia // Schizophr Bull. 2018;44(5):983–992. 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