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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">vestib</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной  академии наук Беларуси. Серия биологических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Biological Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1029-8940</issn><issn pub-type="epub">2524-230X</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestib-294</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>Статьи</subject></subj-group></article-categories><title-group><article-title>ОКСОФЕРРИЛЬНЫЕ ФОРМЫ МИОГЛОБИНА И ГЕМОГЛОБИНА В ПРИСУТСТВИИ ФЕНОЛСОДЕРЖАЩИХ СОЕДИНЕНИЙ КАТАЛИЗИРУЮТ ОКИСЛИТЕЛЬНУЮ ТРАНСФОРМАЦИЮ ТИАМИНА И ЕГО ПРОИЗВОДНЫХ</article-title><trans-title-group xml:lang="en"><trans-title>IN THE PRESENCE OF PHENOL-CONTAINING COMPOUNDS OXOFERRYL FORMS OF MYOGLOBIN AND HEMOGLOBIN CATALYZE OXIDATIVE TRANSFORMATION OF THIAMINE AND ITS DERIVATIVES</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>Лабор</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Labor</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант, мл. науч. сотрудник</p></bio><bio xml:lang="en"><p>Postgraduate student, Junior researcher</p></bio><email xlink:type="simple">swet.labor2010@yandex.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>Степуро</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Stsiapura</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. физ.-мат. наук, вед. науч. сотрудник, доцент</p></bio><bio xml:lang="en"><p>Ph. D. (Phys. and Math.), Leading researcher, Assistant Professor</p></bio><email xlink:type="simple">stsiapura@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>Степуро</surname><given-names>И. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Stepuro</surname><given-names>I. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. биол. наук, вед. науч. сотрудник, доцент</p></bio><bio xml:lang="en"><p>Ph. D. (Biol.), Leading researcher, Assistant Professor</p></bio><email xlink:type="simple">scepura@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>Смирнов</surname><given-names>В. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnov</surname><given-names>V. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ст. науч. сотрудник, доцент</p></bio><bio xml:lang="en"><p>Senior Researcher, Assistant Professor</p></bio><email xlink:type="simple">vit_sm@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт биохимии биологически активных соединений НАН Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Biochemistry of Biologically Active Compounds of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Гродненский государственный университет им. Янки Купалы</institution></aff><aff xml:lang="en"><institution>Yanka Kupala State University of Grodno</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Гродненский государственный медицинский университет</institution></aff><aff xml:lang="en"><institution>Grodno State Medical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>04</day><month>08</month><year>2017</year></pub-date><volume>0</volume><issue>2</issue><fpage>55</fpage><lpage>65</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лабор С.А., Степуро В.И., Степуро И.И., Смирнов В.Ю., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Лабор С.А., Степуро В.И., Степуро И.И., Смирнов В.Ю.</copyright-holder><copyright-holder xml:lang="en">Labor S.A., Stsiapura V.I., Stepuro I.I., Smirnov V.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://vestibio.belnauka.by/jour/article/view/294">https://vestibio.belnauka.by/jour/article/view/294</self-uri><abstract><p>С помощью спектрально-флуоресцентных методов и метода высокоэффективной жидкостной хроматографии (ВЭЖХ) показано, что после инкубации тиамина с миоглобином и пероксидом водорода в водном растворе образуются тиохром, оксодигидротиохром и тиаминдисульфид. При добавлении тирозина или парацетамола в раствор метмиоглобина, пероксида водорода и тиамина резко повышается выход тиохрома, а выход оксодигидротиохрома и тиаминдисульфида снижается. В присутствии высоких концентраций парацетамола или тирозина тиамин превращается в тиохром, а выход оксодигидротиохрома и ти- аминдисульфида полностью ингибируется. Тиаминмонофосфат и тиаминдифосфат, в отличие от тиамина, стабильны и не окисляются даже после длительной инкубации в смеси с метмиоглобином и пероксидом водорода. Фосфорные эфиры тиамина не окисляются в соот- ветствующие фосфаты тиохрома в отсутствие монофенолов. Образование димеров тирозина, а также димеров и олигомеров парацетамола замедляется в присутствии тиамина и его фосфорных эфиров. Обсуждается механизм сопряженного окисления тиамина и его фосфорных эфиров с окислением монофенолов в пероксидазной реакции, катализируемой метмиоглобином и пероксидом водорода. </p></abstract><trans-abstract xml:lang="en"><p>Using HPLC, absorption and fluorescence spectroscopy methods it was shown that incubation of thiamine with myoglobin and hydrogen peroxide in aqueous solution resulted in formation of thiochrome, oxodihydrothiochrome, and thiaminedisulfide. If tyrosine or paracetamol are present in incubation mixture besides metmyoglobin, hydrogen peroxide, and thiamine we observed significant growth of thiochrome yield and formation of oxodihydrothiochrome and thiaminedisulfide decreased. At high excesses of paracetamol or tyrosine the production of oxodihydrothiochrome and thiamine disulfide were inhibited and thiochrome was the only product of thiamine oxidation. In comparison to thiamine, its phosphate esters (thiamine monophosphate and thiamine diphosphate) are stable in presence of metmyoglobin and hydrogen peroxide and even prolonged times of incubation did not lead to their oxidative transformations. However, addition of monophenol compounds to the incubation mixture leads to oxidation of thiamine phosphate esters to the corresponding thiochrome phosphates. From the other side, formation of tyrosine dimers as well as paracetamol dimers and oligomers is lowered down in presence of thiamine and its phoshate esters. Mechanism of coupled oxidation of thiamine and its phosphate esters with oxidation of monophenols in peroxidase reaction catalyzed by metmyoglobin and hydrogen peroxide is discussed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метмиоглобин</kwd><kwd>метгемоглобин</kwd><kwd>оксоферрильные формы</kwd><kwd>ферри-форма</kwd><kwd>оксодигидротиохром</kwd><kwd>тиаминдисульфид</kwd><kwd>тиохром</kwd><kwd>феноксильные радикалы</kwd><kwd>тиаминмонофосфат</kwd><kwd>тиаминдифосфат</kwd></kwd-group><kwd-group xml:lang="en"><kwd>myoglobin</kwd><kwd>hemoglobin</kwd><kwd>hemoprotein</kwd><kwd>oxoferryl form</kwd><kwd>ferri-form</kwd><kwd>oxodihydrothiochrome</kwd><kwd>thiaminedisulfide</kwd><kwd>tiochrome</kwd><kwd>metmyoglobin</kwd><kwd>methemoglobin</kwd><kwd>tyrosine radicals</kwd><kwd>tiaminpirofosfat</kwd><kwd>thiamin diphosphate</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">Взаимодействие оксоферрилмиоглобина и динитрозильных комплексов железа / К. 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