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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">83240</article-id>
   <article-id pub-id-type="doi">10.29039/rusjbpc.2023.0611</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">POSSIBLE MECHANISM OF INFLUENCE OF SHORT-TERM HYPOXIA ON OLFACTORY SENSITIVITY</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>ПРЕДПОЛАГАЕМЫЙ МЕХАНИЗМ ВЛИЯНИЯ КРАТКОВРЕМЕННОЙ ГИПОКСИИ НА ОБОНЯТЕЛЬНУЮ ЧУВСТВИТЕЛЬНОСТЬ</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Безгачева</surname>
       <given-names>Е. А.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Bezgacheva</surname>
       <given-names>E. 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>Бигдай</surname>
       <given-names>Е. В.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Bigdaj</surname>
       <given-names>E. V.</given-names>
      </name>
     </name-alternatives>
     <email>bigday50@mail.ru</email>
     <xref ref-type="aff" rid="aff-2"/>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Военно-медицинская академия им. С.М. Кирова</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Kirov Military medical academy</institution>
     <city>Saint Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Санкт-Петербургский государственный педиатрический медицинский университет</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Saint-Petersburg State Pediatric Medical University</institution>
     <city>Saint Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Институт физиологии им. И.П. Павлова РАН</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Pavlov Institute of Physiology RAS</institution>
     <city>Saint Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2024-05-21T13:05:08+03:00">
    <day>21</day>
    <month>05</month>
    <year>2024</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2024-05-21T13:05:08+03:00">
    <day>21</day>
    <month>05</month>
    <year>2024</year>
   </pub-date>
   <volume>8</volume>
   <issue>2</issue>
   <fpage>207</fpage>
   <lpage>211</lpage>
   <history>
    <date date-type="received" iso-8601-date="2023-07-18T00:00:00+03:00">
     <day>18</day>
     <month>07</month>
     <year>2023</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/83240/view">https://rusjbpc.ru/en/nauka/article/83240/view</self-uri>
   <abstract xml:lang="ru">
    <p>Данная статья посвящена изучению влияния кратковременной гипоксии на обонятельную чувствительность крысы и человека. Влияние кратковременной гипоксии на обонятельную чувствительность человека исследовали посредством выявления порогов обнаружения н-бутанола. Было показано, что при уменьшении содержания кислорода во вдыхаемой газовой смеси обонятельная чувствительность снижалась. Как известно, пороги обнаружения одорантов характеризуют функциональное состояние рецепторных клеток. Можно предположить, ослабление их чувствительности может обусловливаться недостатком энергоснабжения процесса обонятельного восприятия в условиях гипоксии. Для проверки этого предположения методом прижизненной люминесцентной микроскопии исследовалось клеточное дыхание обонятельных сенсорных нейронов крыс при стимуляции н-бутанолом на модели ротеноновой тканевой гипоксии. Реакцию клеточного дыхания обонятельных сенсорных нейронов оценивали по изменению интенсивности собственной флуоресценции восстановленных пиридиннуклеотидов (НАДН) по методу Б. Чанса. Анализ полученных результатов показал, что в условиях нормоксии стимуляция обонятельных нейронов пахучим раздражителем вызывала повышение интенсивности флуоресценции НАДН, что свидетельствует о накоплении восстановленной формы пиридиннуклеотидов в митохондриях, а, следовательно, об активации клеточного дыхания под действием одорантов. При гипоксии, вызванной ротеноном, повышения интенсивности флуоресценции НАДН под действием н-бутанола либо не регистрировалось, либо амплитуда реакции снижалась вдвое. Это означает, что восстановления НАДН под действием одоранта либо совсем не происходило, либо эта реакция на запах была значительно ниже, чем в контроле, что указывает на ослабление клеточного дыхания при гипоксии. Это приводит к уменьшению синтеза АТФ, влияющего на эффективность процесса обонятельной трансдукции и чувствительность обонятельных сенсорных нейронов. Следовательно, на основе полученных результатов можно сделать вывод, что ослабление обонятельной чувствительности у млекопитающих и человека при гипоксии может быть обусловлено ослаблением клеточного дыхания в обонятельных сенсорных нейронах.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The article is focused on the effect of short-term hypoxia on the olfactory sensitivity. The effect of short-term hypoxia on the olfactory sensitivity in human and rats were studied by determination thresholds for n-butanol. We have shown that reduced oxygen partial pressure leads to reduction of olfactory sensitivity. As known, odorant detection thresholds characterize the functional state of receptor cells. It can be assumed that the weakening of their sensitivity may be caused by a lack of energy supply to the olfactory perception process in hypoxia. To test this hypothesis, we stimulated rat olfactory sensory neurons with n-butanol in rotenone model. The reaction of cellular respiration of olfactory sensory neurons was evaluated by changing the intensity of intrinsic fluorescence of reduced pyridine nucleotides (NADH) according to the B. Chance method. Analysis of the results showed that under normoxia, stimulation of olfactory neurons by odorant caused an increase in the intensity of NADH fluorescence, which indicates the accumulation of the reduced form of pyridine nucleotides in mitochondria, and, consequently, the activation of cellular respiration due to exposure to odorant. In hypoxia caused by rotenone, an increase in the induced change of fluorescence of NADH was either not registered or the amplitude of the reaction was halved. This means that the recovery of NADH due to the odorant either did not occur at all, or this reaction to the smell was significantly lower than with normoxia, which indicates a weakening of cellular respiration during hypoxia. This is the reason for the decrease in ATP synthesis, which affects the efficiency of the olfactory transduction process and the sensitivity of olfactory sensory neurons. Therefore, based on our results, it can be concluded that the weakening of olfactory sensitivity in rats and humans with hypoxia may be due to a weakening of cellular respiration in olfactory sensory neurons.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>обонятельная чувствительность</kwd>
    <kwd>обонятельный эпителий</kwd>
    <kwd>кратковременная гипоксия</kwd>
    <kwd>одоранты</kwd>
    <kwd>обонятельные сенсорные нейроны</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>olfactory sensitivity</kwd>
    <kwd>olfactory epithelium</kwd>
    <kwd>short-term hypoxia</kwd>
    <kwd>odorants</kwd>
    <kwd>olfactory sensory neuron</kwd>
   </kwd-group>
  </article-meta>
 </front>
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