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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">54318</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Общая биофизика</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>General biophysics</subject>
    </subj-group>
    <subj-group>
     <subject>Общая биофизика</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">THE EFFECT OF HYDROCARBON CHAIN LENGTH OF MEMBRANE LIPIDS, LATERAL PRESSURE AND CHOLESTEROL CONCENTRATION ON MEMBRANE OXYGEN PERMEABILITY</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>ВЛИЯНИЕ ДЛИНЫ УГЛЕВОДОРОДНЫХ ЦЕПЕЙ МЕМБРАННЫХ ЛИПИДОВ, ЛАТЕРАЛЬНОГО ДАВЛЕНИЯ И КОНЦЕНТРАЦИИ ХОЛЕСТЕРИНА НА ПРОНИЦАЕМОСТЬ МЕМБРАН ДЛЯ КИСЛОРОДА</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Гуськова</surname>
       <given-names>Р А</given-names>
      </name>
      <name xml:lang="en">
       <surname>Gus’kova</surname>
       <given-names>R A</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Васильев</surname>
       <given-names>Н С</given-names>
      </name>
      <name xml:lang="en">
       <surname>Vasil’ev</surname>
       <given-names>N S</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Локтюшкин</surname>
       <given-names>А В</given-names>
      </name>
      <name xml:lang="en">
       <surname>Loktyushkin</surname>
       <given-names>A 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>Иванов</surname>
       <given-names>И И</given-names>
      </name>
      <name xml:lang="en">
       <surname>Ivanov</surname>
       <given-names>I I</given-names>
      </name>
     </name-alternatives>
     <email>ivanov36@mail.ru</email>
     <xref ref-type="aff" rid="aff-4"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">M.V. Lomonosov Moscow State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">M.V. Lomonosov Moscow State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">M.V. Lomonosov Moscow State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-4">
    <aff>
     <institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">M.V. Lomonosov Moscow State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2018-09-25T20:22:29+03:00">
    <day>25</day>
    <month>09</month>
    <year>2018</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2018-09-25T20:22:29+03:00">
    <day>25</day>
    <month>09</month>
    <year>2018</year>
   </pub-date>
   <volume>3</volume>
   <issue>3</issue>
   <fpage>499</fpage>
   <lpage>503</lpage>
   <history>
    <date date-type="received" iso-8601-date="2018-09-20T20:22:29+03:00">
     <day>20</day>
     <month>09</month>
     <year>2018</year>
    </date>
    <date date-type="accepted" iso-8601-date="2018-09-20T20:22:29+03:00">
     <day>20</day>
     <month>09</month>
     <year>2018</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/54318/view">https://rusjbpc.ru/en/nauka/article/54318/view</self-uri>
   <abstract xml:lang="ru">
    <p>С помощью сканирующего электрохимического микроскопа (СЭХМ) с инвертированным открытым платиновым электродом (ИОПЭ), интегрированного с ванной Ленгмюра, исследовали влияние длинноцепочечных углеводородов на проницаемость мембран для О2. Установлено, что проницаемость мембран из длинноцепочечных жирных кислот (С18 - стеариновая или С20 - арахиновая) резко снижается при возрастании поверхностного давления в диапазоне 20-50 мН/м. При добавлении холестерина к этим мембранам (до 10 %) влияние поверхностного давления на скорость переноса О2 ингибируется. Проницаемость мембран из липидов с более короткими цепями (С16 и менее) остается высокой независимо от величины латерального давления. Физиологическая роль обнаруженных явлений обсуждается в связи с особенностями газообмена О2 через мембрану эритроцитов в микрокапиллярах кровяного русла. Рассматривается формирование вытянутой формы клетки в микрокапилляре, увеличение площади мембраны клетки, снижение поверхностного натяжения в мембране, минимизация зазора между мембраной эритроцита и стенками микрокапилляра, движение клетки вдоль капилляра, скорость и причины возвращения клетки к нормальной двояковогнутой форме.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>We employed scanning electrochemical microscope (SECM) with inverted open platinum electrode (IOPE), integrated with Langmuir bath, to investigate the impact of long-chain hydrocarbons on the permeability of membranes for O2. We show that oxygen permeability of membranes composed of long-chain fatty acids (C18 - stearic or C20 - arachidic) sharply decreases in response to increasing surface pressure in the range 20-45 mN/m. Addition of cholesterol to these membranes (up to 10%) inhibits the effect of surface pressure on the O2 transfer rate. Permeability of membranes composed of lipids with shorter chains (C16 and less) remains high regardless of lateral pressure. Physiological role of the detected phenomena is discussed in connection with O2 gas exchange through the membrane of erythrocytes in blood capillaries. We discuss formation of the elongated cell shape in the capillary, increase in the surface area of the cell membrane, reduction of surface tension in the membrane, reduction of the gap between the erythrocyte membrane and the walls of the capillary, movement of the cell along the capillary, the causes and speed of the cell return to its normal biconcave shape.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>проницаемость липидных мембран для кислорода</kwd>
    <kwd>длинноцепочечные липиды</kwd>
    <kwd>латеральное давление</kwd>
    <kwd>холестерин</kwd>
    <kwd>СЭХМ</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>Dioxygen diffusion</kwd>
    <kwd>long-chain hydrocarbons monolayers</kwd>
    <kwd>surface pressure</kwd>
    <kwd>cholesterol</kwd>
    <kwd>SECM</kwd>
   </kwd-group>
  </article-meta>
 </front>
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