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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2020-64-1-28-35</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-850</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>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>Метод определения скрытых параметров синаптической передачи на основе данных ингибиторного анализа</article-title><trans-title-group xml:lang="en"><trans-title>Method of synaptic transmission hidden parameters evaluation based on inhibition analysis data</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>Глецевич</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Hliatsevich</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Глецевич Марина Александровна - старший преподаватель.</p><p>Пр. Независимости, 4, 220030, Минск</p></bio><bio xml:lang="en"><p>Hliatsevich Maryna A. - Senior lecture.</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">gletsevich.marina@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Булай</surname><given-names>П. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Bulai</surname><given-names>P. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Булай Павел Михайлович - кандидат физико-математических наук, доцент, научный сотрудник.</p><p>Пр. Независимости, 4, 220030, Минск</p></bio><bio xml:lang="en"><p>Bulai Pavel M. - Ph. D. (Physics and Mathematics), Associate professor, Researcher.</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">bulaypm@bsu.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Питлик</surname><given-names>Т. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Pitlik</surname><given-names>Т. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Питлик Тарас Николаевич - кандидат биологических наук, научный сотрудник.</p><p>Пр. Независимости, 4, 220030, Минск</p></bio><bio xml:lang="en"><p>Pitlik Taras N. - Ph. D. (Biology), Researcher.</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">taras.pitlik@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Денисов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Denisov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Денисов Андрей Анатольевич - кандидат биологических наук, заведующий лабораторией.</p><p>Пр. Независимости, 4, 220030, Минск</p></bio><bio xml:lang="en"><p>Denisov Andrey A. - Ph. D. (Biology), Head of the Laboratory.</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">an.denisov@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пашкевич</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Pashkevich</surname><given-names>S. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пашкевич Светлана Георгиевна - кандидат биологических наук, заведующий лабораторией.</p><p>Ул. Академическая, 28, 220072, Минск</p></bio><bio xml:lang="en"><p>Pashkevich Svetlana G. - Ph. D. (Biology), Head of the Laboratory.</p><p>28, Akademicheskaya Str., 220072, Minsk</p></bio><email xlink:type="simple">skypasht@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черенкевич</surname><given-names>С. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Cherenkevich</surname><given-names>S. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Черенкевич Сергей Николаевич - академик, доктор биологических наук, профессор.</p></bio><bio xml:lang="en"><p>Cherenkevich Sergey N. - Academician, D. Sc. (Biology), Professor.</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">cherenkevich@bsu.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт физиологии, Национальная академия наук Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Physiology, National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>19</day><month>03</month><year>2020</year></pub-date><volume>64</volume><issue>1</issue><fpage>28</fpage><lpage>35</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Глецевич М.А., Булай П.М., Питлик Т.Н., Денисов А.А., Пашкевич С.Г., Черенкевич С.Н., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Глецевич М.А., Булай П.М., Питлик Т.Н., Денисов А.А., Пашкевич С.Г., Черенкевич С.Н.</copyright-holder><copyright-holder xml:lang="en">Hliatsevich M.A., Bulai P.M., Pitlik Т.N., Denisov A.A., Pashkevich S.G., Cherenkevich S.N.</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://doklady.belnauka.by/jour/article/view/850">https://doklady.belnauka.by/jour/article/view/850</self-uri><abstract><p>Математическое описание передачи сигнала в синапсах открывает широкие перспективы в изучении деятельности головного мозга, позволяя собрать результаты многочисленных экспериментальных исследований в единую модель. Существенные затруднения при таком подходе возникают вследствие не только многоэтапности синаптической передачи, но и отсутствия точных численных характеристик динамики многих ее участников.</p><p>Цель работы - разработать метод определения параметров синаптической передачи, недоступных для прямого измерения (скрытых параметров), и апробировать его в процессе изучения динамики основных этапов данного процесса в нейронных сетях гиппокампа.</p><p>Предлагаемый в данной работе метод основан на построении детерминистической модели, описывающей генерацию полевого возбуждающего постсинаптического потенциала в условиях действия ингибиторов (цилнидипина, 1.2-  бис(2-аминофенокси) этан- N,N,N′,N′ тетрауксусной кислоты тетракис(ацетоксиметилового эфира), 6-циано-7-ни-трокиноксалин-2,3-диона), и параметрической идентификации данной модели на зарегистрированных с помощью микроэлектродной техники полевых возбуждающих постсинаптических потенциалах в срезах гиппокампа крысы. Параметрическая идентификация проводилась путем минимизации отклонения моделируемого сигнала от экспериментально зарегистрированного. Для минимизации целевой функции использовали генетический алгоритм.</p><p>В результате проведенного исследования было показано, что параметрическая идентификация модели позволяет с высокой степенью соответствия воспроизводить формирование полевых возбуждающих постсинаптических потенциалов и оказываемое на них действие ингибиторов. Установлены численные значения одиннадцати скрытых параметров синаптической передачи. С помощью данных значений получены временные зависимости содержания ключевых участников синаптической передачи: ионов Ca2+ в пресинаптическом окончании, SNARE-комплексов, синаптических везикул в различных состояниях, глутамата в синаптической щели, доли открытых каналов АМРА-рецепторов на постсинаптической мембране. Таким образом, предложен метод, который целесообразно использовать для определения скрытых параметров различных типов синаптических контактов в головном мозге млекопитающих.</p></abstract><trans-abstract xml:lang="en"><p>Nowadays neuroscience strongly demands application of the mathematical methods for description of many neurophysiological and neurochemical processes among which the synaptic transmission outstands. One of the main problems in synaptic transmission modelling is the lack of the accurate values of dynamic parameters of biomolecules and complexes taking part in this process.</p><p>The goal of this study is to elaborate the method for evaluation of synaptic transmission parameters that cannot be measured directly (so-called hidden parameters) and apply its results for investigation of the main stages of synaptic transmission in neuronets of hippocampus.</p><p>The method is based on the parametric identification of the synaptic transmission deterministic model, which includes equations for description of inhibitors action on the main biochemical participants. We used three inhibitors: cilnidipine, 1.2-        bis(2-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid tetrakis(acetoxymethyl ester) (BAPTA-AM), 6-cyano-7-nitroquinoxaline-2,3-dione (CNQX). The parametric identification was performed by minimization of deviation of modeled field excitatory postsynaptic potential from those measured in rat hippocampus slices with microelectrode technique when inhibitors were applied.</p><p>The results of the parametric identification of proposed model show that the model can adequately describe the generation of field excitatory postsynaptic potentials and their inhibition. The elaborated method afforded to evaluate the numerical meanings of eleven synaptic transmission hidden parameters. Using these parameters we have modelled the key synaptic transmission stages and got the time courses of the main biochemical participants: calcium ions in presynaptic bouton, SNARE complexes, synaptic vesicles in different states, glutamate in the synaptic cleft and open channels of AMPA receptor on the postsynaptic membrane. Thus, we propose method of hidden parameters evaluation that can be applied for different synaptic contacts in the brain of mammalians.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>синаптическая передача</kwd><kwd>скрытые параметры</kwd><kwd>параметрическая идентификация</kwd><kwd>гиппокамп</kwd><kwd>полевой возбуждающий постсинаптический потенциал</kwd></kwd-group><kwd-group xml:lang="en"><kwd>synaptic transmission</kwd><kwd>hidden parameters</kwd><kwd>hippocampus</kwd><kwd>parametric identification</kwd><kwd>field excitatory postsynaptic potentials</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">Design of Deterministic Model of Signal Transduction between Neuronal Cells / M. A. 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