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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">55015</article-id>
   <article-id pub-id-type="doi">10.29039/rusjbpc.2022.0515</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">THE EFFECTS OF COBRA CARDIOTOXINS ON THE PAPILLARY MUSCLE AND LANGENDORF PERFUSED RAT HEART ARE NOT ASSOCIATED WITH ADRENALINE RELEASE</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Эффекты кардиотоксинов кобры на папиллярной мышце и сердце крысы, перфузируемом по Лангендорфу, не связаны с выбросом адреналина</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Аверин</surname>
       <given-names>А. С.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Averin</surname>
       <given-names>A. S.</given-names>
      </name>
     </name-alternatives>
     <email>averinas82@gmail.com</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Тюрин</surname>
       <given-names>Ф. В.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Tyurin</surname>
       <given-names>F. V.</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Самодурова</surname>
       <given-names>К. В.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Samodurova</surname>
       <given-names>K. V.</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Старков</surname>
       <given-names>В. Г.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Starkov</surname>
       <given-names>V. G.</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-4"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Андреева</surname>
       <given-names>Т. В.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Andreeva</surname>
       <given-names>T. V.</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-5"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Уткин</surname>
       <given-names>Ю. Н.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Utkin</surname>
       <given-names>Yu. N.</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-6"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">ФИЦ ПНЦБИ РАН</institution>
     <city>Пущино</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">PSCBR RAS</institution>
     <city>Pushchino</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Тульский государственный  педагогический университет им. Л.Н. Толстого</institution>
    </aff>
    <aff>
     <institution xml:lang="en">Leo Tolstoy Tula State Pedagogical University</institution>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Санкт-Петербургский государственный технологический институт (технический университет)</institution>
    </aff>
    <aff>
     <institution xml:lang="en">St. Petersburg State Technological Institute (technical university)</institution>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-4">
    <aff>
     <institution xml:lang="ru">Институт биоорганической химии им. акад. М.М. Шемякина и Ю.А. Овчинникова РАН</institution>
     <city>Москва</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Shemyakin–Ovchinnikov Institute of bioorganic chemistry RAS</institution>
     <city>Moscow</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-5">
    <aff>
     <institution xml:lang="ru">Институт биоорганической химии им. акад. М.М. Шемякина и Ю.А. Овчинникова РАН</institution>
     <city>Москва</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Shemyakin–Ovchinnikov Institute of bioorganic chemistry RAS</institution>
     <city>Moscow</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-6">
    <aff>
     <institution xml:lang="ru">Институт биоорганической химии им. акад. М.М. Шемякина и Ю.А. Овчинникова РАН</institution>
     <city>Москва</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Shemyakin–Ovchinnikov Institute of bioorganic chemistry RAS</institution>
     <city>Moscow</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2022-06-25T20:22:29+03:00">
    <day>25</day>
    <month>06</month>
    <year>2022</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2022-06-25T20:22:29+03:00">
    <day>25</day>
    <month>06</month>
    <year>2022</year>
   </pub-date>
   <volume>7</volume>
   <issue>2</issue>
   <fpage>280</fpage>
   <lpage>285</lpage>
   <history>
    <date date-type="received" iso-8601-date="2022-06-20T20:22:29+03:00">
     <day>20</day>
     <month>06</month>
     <year>2022</year>
    </date>
    <date date-type="accepted" iso-8601-date="2022-06-20T20:22:29+03:00">
     <day>20</day>
     <month>06</month>
     <year>2022</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/55015/view">https://rusjbpc.ru/en/nauka/article/55015/view</self-uri>
   <abstract xml:lang="ru">
    <p>При исследовании действия кардиотоксинов кобры на миокардиальную ткань оценивалась как сократимость правого желудочка (папиллярная мышца), так и левого (изоволюмическая регистрация пульсового давления в левом желудочке при перфузии сердца по Лангендорфу). На папиллярной мышце оба токсина в концентрации 5 мкг/мл, вызывали краткосрочный рост силы сокращения до 200±25% и 171±15% для КТ-1 и КТ-2, соответственно, в точке максимума эффекта. При этом для КТ-1 и КТ-2 время достижения максимума сокращения (ВДМ) увеличивалось с 104±2 до 111±2 и с 96±2 до 104±5 мс, время расслабления до 50% (ВР50%) с 64±4 до 70±6 и с 64±6 до 69±7 мс, время расслабления до 95% (ВР95%) с 163±10 до 190±22 и с 148±16 до 155±20 мс, соответственно. Это существенно отличается от положительного инотропного эффекта β-адреномиметика изопротеренола (170±31%) который вызывает ускорение ВДМ со 106±5 до 89±4 мс, ВР50% с 58±6 до 43±4 мс и ВР95% с 145±15 до 90±14мс. При воздействии кардиотоксинов на целое сердце также наблюдался рост силы сокращения, который сменялся ее подавлением и контрактурой, в отличии изопротеренола, который вызывал устойчивый рост сократимости, сопряженный с увеличением частоты сердечных сокращений. Предварительная обработка папиллярных мышц β-блокатором пропранололом (10 мкМ), не препятствовала развитию эффектов кардиотоксинов, но полностью блокировала эффекты изопротеренола. Полученные нами данные свидетельствуют о том, что временный рост сократимости при действии кардиотоксинов не связан с выбросом эндогенного адреналина, а скорее обусловлен изменениями кальциевого гомеостаза в кардиомиоцитах.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>In a study of the effects of cobra cardiotoxins on myocardial tissue, both right ventricular (papillary muscle) and left ventricular contractility (isovolumic recording of left ventricular pulse pressure during Langendorff perfusion of the heart) were assessed. In papillary muscle, both toxins, at a concentration of 5 μg/mL, caused short-term increases in contractility to 200±25% and 171±15% for CTX-1 and CTX-2, respectively, at the point of maximum effect. At the same time, for CTX-1 and CTX-2, the time to peak tension (TPT) increased from 104±2 to 111±2 and from 96±2 to 104±5 ms, the relaxation time to 50%(TR50%) from 64±4 to 70±6 and from 64±6 to 69±7 ms, and the relaxation time to 95%(TR95%) from 163±10 to 190±22 and from 148±16 to 155±20 ms, respectively. This significantly differs from the positive inotropic effect of the β-adrenomimetic isoproterenol (170±31%), which causes acceleration of TPT from 106±5 to 89±4 ms, TR50% from 58±6 to 43±4 ms, and TR95% from 145±15 to 90±14 ms. When the whole heart was exposed to cardiotoxins, an increase in contractility was also observed, followed by its suppression and contracture, in contrast to isoproterenol, which caused a steady increase in contractility coupled with an increase in heart rate. Pretreatment of papillary muscles with the β-blocker propranolol &#13;
(10 μM) did not prevent the development of cardiotoxin effects, but completely blocked the effects of isoproterenol. Our data indicate that the temporary increase in contractility under the action of cardiotoxins is not associated with the release of endogenous adrenaline, but rather is caused by changes in calcium homeostasis in cardiomyocytes.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>кардиотоксины</kwd>
    <kwd>папиллярная мышца</kwd>
    <kwd>перфузия сердца по Лангендорфу</kwd>
    <kwd>положительный инотропный эффект</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>cardiotoxins</kwd>
    <kwd>papillary muscle</kwd>
    <kwd>Langendorff perfusion</kwd>
    <kwd>positive inotropic effect</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке Российского научного фонда в рамках научного проекта № 21-14-00316.</funding-statement>
   </funding-group>
  </article-meta>
 </front>
 <body>
  <p></p>
 </body>
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