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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">zdor</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы здоровья и экологии</journal-title><trans-title-group xml:lang="en"><trans-title>Health and Ecology Issues</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-0967</issn><issn pub-type="epub">2708-6011</issn><publisher><publisher-name>Gomel State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.51523/2708-6011.2023-20-3-12</article-id><article-id custom-type="elpub" pub-id-type="custom">zdor-2594</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>ЭКСПЕРИМЕНТАЛЬНАЯ МЕДИЦИНА И БИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>EXPERIMENTAL MEDICINE AND BIOLOGY</subject></subj-group></article-categories><title-group><article-title>Влияние γ-облучения в дозе 1 Гр на аденилати гуанилатциклазную системы тромбоцитов крыс в различные сроки постлучевого периода</article-title><trans-title-group xml:lang="en"><trans-title>The effect of γ-irradiation at a dose of 1 Gy on the adenylate- and guanylate cyclase systems of rat platelets at different times of the post-radiation period</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7066-5513</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пархимович</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Parkhimovich</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пархимович Ольга Георгиевна, преподаватель кафедры экологической химии и биохимии</p><p>г. Минск</p></bio><bio xml:lang="en"><p>Volha G. Parkhimovich, Lecturer of the Department of Ecological Chemistry and Biochemistry</p><p>Minsk</p></bio><email xlink:type="simple">olga_parkhimovich@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7850-4888</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бичан</surname><given-names>О. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Bichan</surname><given-names>V. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бичан Ольга Дмитриевна, заведующая учебной лабораторией физического факультета</p><p>г. Минск</p></bio><bio xml:lang="en"><p>Volha D. Bichan, Head of the Educational Laboratory of the Faculty of Physics</p><p>Minsk</p></bio><email xlink:type="simple">bichan@bsu.by</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6770-581X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Буланова</surname><given-names>К. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Bulanova</surname><given-names>C. Ya.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Буланова Клавдия Яковлевна, к.б.н., доцент кафедры экологической химии и биохимии</p><p>г. Минск</p></bio><bio xml:lang="en"><p>Claudia Ya. Bulanova, Candidate of Biological Sciences, Associate Professor of the Department of Ecological Chemistry and Biochemistry</p><p>Minsk</p></bio><email xlink:type="simple">bulanova_home@tut.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Международный государственный экологический институт имени А. Д. Сахарова Белорусского государственного университета</institution></aff><aff xml:lang="en"><institution>International Sakharov Environmental Institute of Belarusian State University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>26</day><month>09</month><year>2023</year></pub-date><volume>20</volume><issue>3</issue><fpage>94</fpage><lpage>99</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Пархимович О.Г., Бичан О.Д., Буланова К.Я., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Пархимович О.Г., Бичан О.Д., Буланова К.Я.</copyright-holder><copyright-holder xml:lang="en">Parkhimovich V.G., Bichan V.D., Bulanova C.Y.</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://journal.gsmu.by/jour/article/view/2594">https://journal.gsmu.by/jour/article/view/2594</self-uri><abstract><p>Цель исследования. Изучить влияние общего γ-облучения организма крыс в дозе 1 Гр на аденилат- и гуанилатциклазную системы и их взаимоотношений с уровнями Са2+ в цитоплазме тромбоцитов.Материалы и методы. Исследования проводились на беспородных белых крысах-самцах зрелого возраста (6–7 мес.) весом 250 ± 30 г. Животных облучали (однократно и равномерно) на установке ИГУР γ-квантами 137Сs в дозе 1 Гр (мощность дозы — 0,62 Гр/мин, в течение 1,61 мин.). Контролем служили животные соответствующего возраста. Для определения содержания циклических нуклеотидов использовали наборы реактивов РИО цАМФ/цГМФ-иод125-М-ИБОХ. Количество кальция в тромбоцитах определяли с помощью флуоресцентного зонда Fura-2/АМ с использованием спектрофлуориметра СМ 2203 «СОЛАР» (Минск, Беларусь).Результаты. В ближайшие сроки после облучения наблюдается увеличение активности аденилатциклазной системы. Уровень цАМФ повышается в 1,8–1,5 раза в течение 3–30-х суток постлучевого периода. Однако рост [Са2+]цит на 3-и сутки после облучения приводит к его преобладанию в 1,8 раза по соотношению к цАМФ, что объясняет появление увеличенной агрегационной активности кровяных пластинок в ближайшие сроки постлучевого периода. Повышение активности гуанилатциклазной системы и рост внутриклеточного содержания цГМФ наблюдается на 90-е сутки, что приводит к уменьшению соотношения Са2+/цГМФ в 1,83 раза и соответствует сниженной агрегационной активности тромбоцитов и вероятности возникновения кровоточивости в отдаленные сроки периода реабилитации.Заключение. Эффекты действия радиации на тромбоциты крыс, облученных в дозе 1 Гр, обусловлены системными нарушениями главных внутриклеточных регуляторных механизмов: Са2+, цАМФ, цГМФ. Исходя из полученных данных, можно сделать вывод о том, что фармакологическая коррекция в ближайшие сроки после облучения должна быть направлена на ингибирование эффектов [Ca2+]цит и активности аденилатциклазной системы, а в отдаленные — на торможение активности гуанитатциклазной системы.</p></abstract><trans-abstract xml:lang="en"><p>Objective. To study the effect of total γ-irradiation of the organism of rats at a dose of 1 Gy on the adenylate- and guanylate cyclase systems and their relationship with Ca2+ levels in the platelet cytoplasm.Materials and methods. The studies were carried out on outbred white male rats of mature age (6-7 months) weighing 250±30 g. Animals were irradiated (once and evenly) on the IGUR unit with 137Сs γ-quanta at a dose of 1 Gy (dose rate 0.62 Gy/min, for 1.61 min). Animals of the corresponding age served as controls. To determine the content of cyclic nucleotides, RIO cAMP/cGMP-iodine125-M-IBOX reagent kits were used. The amount of calcium in platelets was determined using a Fura-2/AM fluorescent probe using spectrofluorimeter SM 2203 “SOLAR” (Minsk, Belarus).Results. In the short period after irradiation, an increase in the activity of the adenylate cyclase system is observed. The cAMP level rises 1.8-1.5 times during 3-30 days of the post-radiation period. However, the increase in [Ca2+]cyt on the 3rd day after irradiation leads to its predominance by 1.8 times in relation to cAMP, which explains the appearance of an increased aggregation activity of the blood platelets in the immediate post-radiation period. An increase in the activity of the guanylate cyclase system and an increase in the intracellular content of cGMP are observed on the 90th day, which leads to a decrease in the Ca2+/cGMP ratio by 1.83 times and corresponds to a reduced platelet aggregation activity and the probability of bleeding in the long term of the rehabilitation period.Conclusion. The effects of radiation on the platelets of rats irradiated at a dose of 1 Gy are due to systemic disorders of the main intracellular regulatory mechanisms: Ca2+, cAMP, cGMP. Based on the data obtained, it can be concluded that pharmacological correction in the short-term after irradiation should be aimed at inhibiting the effects of [Ca2+]cyt and adenylate cyclase system activity, and in the long-term, at inhibition of guanylate cyclase system activity.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>тромбоциты</kwd><kwd>цАМФ</kwd><kwd>цГМФ</kwd><kwd>кальций</kwd></kwd-group><kwd-group xml:lang="en"><kwd>platelets</kwd><kwd>cAMP</kwd><kwd>cGMP</kwd><kwd>calcium</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">Varga-Szabo D, BraunA, Nieswandt B. Calcium signaling in platelets. J Thromb Haemost. 2009 Jul;7(7):1057-1066. 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