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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">10.29235/1561-8323-2019-63-2-189-197</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-602</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>БИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOLOGY</subject></subj-group></article-categories><title-group><article-title>Физико-химические свойства лактоферрина в условиях окислительного/галогенирующего стресса</article-title><trans-title-group xml:lang="en"><trans-title>Physicochemical properties of lactoferrin under oxidative/halogenative stress</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>Терехова</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Terekhova</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Терехова Мария Сергеевна – стажер мл. науч. сотрудника.</p><p>ул. Бобруйская, 5, 220030, Минск.</p><p> </p><p> </p></bio><bio xml:lang="en"><p>Terekhova Maria Sergeevna – Trainee of Junior researcher. </p><p>5, Bobruiskaya Str., 220030, Minsk.</p></bio><email xlink:type="simple">autumn_frost@mail.ru</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>Григорьева</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Grigorieva</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Григорьева Дарья Владимировна – канд. биол. наук, ст. науч. сотрудник. </p><p>ул. Бобруйская, 5, 220030, Минск.</p><p> </p></bio><bio xml:lang="en"><p>Grigorieva Daria Vladimirovna – Ph. D. (Biology), Senior researcher. </p><p>5, Bobruiskaya Str., 220030, Minsk.</p></bio><email xlink:type="simple">dargr@tut.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>Горудко</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gorudko</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Горудко Ирина Владимировна – канд. биол. наук, доцент, вед. науч. сотрудник.</p><p>ул. Бобруйская, 5, 220030, Минск.</p><p> </p></bio><bio xml:lang="en"><p>Gorudko Irina Vladimirovna – Ph. D. (Biology), Assistant professor, Leading researcher. </p><p>5, Bobruiskaya Str., 220030, Minsk.</p></bio><email xlink:type="simple">irinagorudko@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>Семак</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Semak</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Семак Игорь Викторович – канд. биол. наук, доцент, зав. кафедрой. </p><p>ул. Бобруйская, 5, 220030, Минск.</p><p> </p></bio><bio xml:lang="en"><p>Semak Igor Victorovich – Ph. D. (Biology), Assistant professor, Head of the Department.</p><p>5, Bobruiskaya Str., 220030, Minsk.</p></bio><email xlink:type="simple">semak@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>Соколов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Соколов Алексей Викторович – д-р биол. наук, профессор, зав. лабораторией. </p><p>ул. Академика Павлова, 12, 197376, Cанкт-Петеpбуpг.</p></bio><bio xml:lang="en"><p>Sokolov Aleksey Victorovich – D. Sc. (Biology), Professor, Head of the Laboratory.</p><p>12, Academic Pavlov Str., 197376, Saint-Petersburg.</p></bio><email xlink:type="simple">biochemsokolov@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>Панасенко</surname><given-names>О. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Panasenko</surname><given-names>O. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Панасенко Олег Михайлович – д-р биол. наук, профессор, заведующий лабораторией. </p><p>Малая Пиpоговcкая ул., 1а, 119435, Москва.</p></bio><bio xml:lang="en"><p>Panasenko Oleg Mikhailovich – D. Sc. (Biology), Professor, Head of the Laboratory.</p><p>1a, Malaya Pirogovskaya Str., 119435, Moscow.</p></bio><email xlink:type="simple">o-panas@mail.ru</email><xref ref-type="aff" rid="aff-3"/></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, д-р биол. наук, профессор. </p><p>ул. Бобруйская, 5, 220030, Минск.</p><p> </p></bio><bio xml:lang="en"><p>Cherenkevich Sergey Nikolaevich – Academician, D. Sc. (Biology), Professor.</p><p>5, Bobruiskaya Str., 220030, Minsk.</p><p> </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 экспериментальной медицины.</institution></aff><aff xml:lang="en"><institution>Institute of Experimental Medicine.</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральный научно-клинический центр физико-химической медицины  Федерального медико-биологического агентства.</institution></aff><aff xml:lang="en"><institution>Federal Research and Clinical Center of Physical-Chemical Medicine.</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>15</day><month>05</month><year>2019</year></pub-date><volume>63</volume><issue>2</issue><fpage>189</fpage><lpage>197</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Терехова М.С., Григорьева Д.В., Горудко И.В., Семак И.В., Соколов А.В., Панасенко О.М., Черенкевич С.Н., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Терехова М.С., Григорьева Д.В., Горудко И.В., Семак И.В., Соколов А.В., Панасенко О.М., Черенкевич С.Н.</copyright-holder><copyright-holder xml:lang="en">Terekhova M.S., Grigorieva D.V., Gorudko I.V., Semak I.V., Sokolov A.V., Panasenko O.M., 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/602">https://doklady.belnauka.by/jour/article/view/602</self-uri><abstract><p>Лактоферрин (Лф) является перспективным объектом для использования в качестве лекарственного средства благодаря ряду полезных свойств (антибактериальное, противовирусное, про- и антивоспалительное и др.). Он содержится в секрете экзокринных желез, во вторичных гранулах нейтрофилов, в молоке человека и некоторых животных. Концентрация Лф быстро увеличивается в очагах воспаления за счет дегрануляции нейтрофилов. Там же за счет активации нейтрофилов идет наработка высокореакционных активных форм кислорода и галогенов, что приводит к развитию окислительного/галогенирующего стресса. В данной работе с помощью флуоресцентных методов впервые показано изменение структуры и свойств Лф (выделенного из женского грудного молока и рекомбинантного Лф человека, выделенного из молока трансгенных коз), находящегося в условиях воспаления (окислительный/галогенирующий стресс). Установлено, что HOCl вызывает модификацию аминокислотного состава Лф (из менение числа триптофанилов и первичных аминов), а также перестройку глобулы. В то же время при действии H2O2 вышеперечисленные изменения не наблюдаются. Произошедшие с молекулой изменения при действии HOCl проявляются в уменьшении способности Лф связывать ионы железа.</p></abstract><trans-abstract xml:lang="en"><p>Lactoferrin (Lf) was discovered in the thirties of the twentieth century. Since that time a number of useful properties of Lf (antibacterial, antiviral, pro- and anti-inflammatory, etc.) have been found. That’s why Lf became a promising candidate for pharmaceuticals use. The concentration of Lf strikingly increases in inflammatory focuses due to neutrophil degranulation. At the same time, activated neutrophils starts to generate reactive oxygen and halogen species (ROS and RHS), which leads to the development of oxidative/halogenative stress. In this work, using the fluorescence analysis we found the change of the Lf structure and properties in the inflammation conditions (under oxidatives/halogenative stress). We use two forms of Lf – human Lf, excreted from human milk, and recombinant Lf, excreted from milk of transgenic goats. It was established that the amino acids of Lf (decreasing the number of tryptophanils and primary amines) and protein restructuring undergo modification under the HOCl action, while H2O2 has no influence. These changes in the molecule under the HOCl treatment result in decreasing the iron-binding capacity of Lf.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>лактоферрин</kwd><kwd>окислительный/галогенирующий стресс</kwd><kwd>конформация белка</kwd><kwd>железосвязывающая способность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>lactoferrin</kwd><kwd>oxidative/halogenative stress</kwd><kwd>protein conformation</kwd><kwd>iron-binding capacity</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">Baker, E. N. 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