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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Russian Journal of Biological Physics and Chemisrty</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Russian Journal of Biological Physics and Chemisrty</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>АКТУАЛЬНЫЕ ВОПРОСЫ БИОЛОГИЧЕСКОЙ ФИЗИКИ И ХИМИИ</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">2499-9962</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">54706</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>МЕДИЦИНСКАЯ БИОФИЗИКА И БИОФИЗИЧЕСКАЯ ХИМИЯ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>MEDICAL BIOPHYSICS AND BIOPHYSICAL CHEMISTRY</subject>
    </subj-group>
    <subj-group>
     <subject>МЕДИЦИНСКАЯ БИОФИЗИКА И БИОФИЗИЧЕСКАЯ ХИМИЯ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Oxidative stress in the intracellular zinc signaling system: in vitro investigation on human erythrocytes</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Окислительный стресс в системе внутриклеточной цинковой сигнализации: in vitro иссследование на эритроцитах человека</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Гармаза</surname>
       <given-names>Ю М</given-names>
      </name>
      <name xml:lang="en">
       <surname>Harmaza</surname>
       <given-names>Y M</given-names>
      </name>
     </name-alternatives>
     <email>garmaza@yandex.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Тамашевский</surname>
       <given-names>А В</given-names>
      </name>
      <name xml:lang="en">
       <surname>Tamashevski</surname>
       <given-names>A V</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Республиканский научно-практический центр трансфузиологии и медицинских биотехнологий МЗ РБ</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Republican Scientific and Practical Center for Transfusiology and Medical Biotechnologies</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Республиканский научно-практический центр трансфузиологии и медицинских биотехнологий МЗ РБ</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Republican Scientific and Practical Center for Transfusiology and Medical Biotechnologies</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2021-12-25T20:22:29+03:00">
    <day>25</day>
    <month>12</month>
    <year>2021</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2021-12-25T20:22:29+03:00">
    <day>25</day>
    <month>12</month>
    <year>2021</year>
   </pub-date>
   <volume>6</volume>
   <issue>4</issue>
   <fpage>640</fpage>
   <lpage>646</lpage>
   <history>
    <date date-type="received" iso-8601-date="2021-12-20T20:22:29+03:00">
     <day>20</day>
     <month>12</month>
     <year>2021</year>
    </date>
    <date date-type="accepted" iso-8601-date="2021-12-20T20:22:29+03:00">
     <day>20</day>
     <month>12</month>
     <year>2021</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/54706/view">https://rusjbpc.ru/en/nauka/article/54706/view</self-uri>
   <abstract xml:lang="ru">
    <p>Используя внутриклеточный и внеклеточный хелаторы для Zn2+ - TPEN и DTPA, продемонстрировано существование специфических рецепторов на поверхности эритроцитов и внутриклеточных депо, отвечающих за поддержание цинкового гомеостаза. В тоже время было показано, что увеличение цитозольного пула лабильного Zn2+ свыше 100 нМ приводит к запуску процессов эриптоза, а цитотоксические эффекты цинка обусловлены внутриклеточными молекулярными механизмами, приводящими к выходу Zn2+ из клеточных депо. Более того, выявлена обратная зависимость между изменением внутриклеточного пула лабильного цинка и эстеразной активности эритроцитов, при моделировании окислительного стресса, используя H2O2 in vitro , что свидетельствует о прямом участии Zn2+ в запуске эриптоза, а дисбаланс “прооксиданты/антиоксиданты” в пользу первых выступает в качестве триггера данного процесса. При этом обнаружен рост уровня экспрессии цитозольных тиол-содержащих белков металлотионеинов, как в эритроцитах, истощенных по Zn2+, так и в клетках после индукции окислительного стресса in vitro путем воздействия H2O2. Это свидетельствует о функционировании данных белков в качестве вспомогательного антиоксиданта в защитной системе эритроцитов в условиях окислительного стресса.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>It was demonstrated the existence of specific receptors on the surface of red blood cells and intracellular stores responsible for maintaining zinc homeostasis using intracellular and extracellular zinc chelators - TPEN and DTPA. At the same time, it was shown that rise the cytosolic pool of labile Zn2+ over 100 nM leads to the initiation of apoptotic processes. The intracellular molecular mechanisms leading to Zn2+ release from cellular stores determine the cytotoxic zinc effects. Moreover, an inverse relationship between the intracellular labile zinc pool and esterase activity of red blood cells under modeling oxidative stress using H2O2 in vitro was revealed. It indicates the direct participation of Zn2+ in triggering eryptosis and that “prooxidants/antioxidants” imbalance in favor of the former acts as a trigger of this process. At the same time, an increase in the expression level of cytosolic thiol-containing metallothioneins was detected, both in red blood cells depleted by Zn2+ and in cells after the oxidative stress induction. These indicate the functioning of metallothioneins as an adjuvant antioxidant in the protective system of red blood cells under oxidative stress.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>эритроциты человека</kwd>
    <kwd>цинковый гомеостаз</kwd>
    <kwd>лабильный пул цинка</kwd>
    <kwd>эстеразная активность</kwd>
    <kwd>металлотионеины</kwd>
    <kwd>окислительный стресс</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>human erythrocytes</kwd>
    <kwd>zinc homeostasis</kwd>
    <kwd>labile zinc pool</kwd>
    <kwd>esterase activity</kwd>
    <kwd>metallothioneins</kwd>
    <kwd>oxidative stress</kwd>
   </kwd-group>
  </article-meta>
 </front>
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