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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Hygiene and Sanitation</journal-id><journal-title-group><journal-title xml:lang="en">Hygiene and Sanitation</journal-title><trans-title-group xml:lang="ru"><trans-title>Гигиена и санитария</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0016-9900</issn><issn publication-format="electronic">2412-0650</issn><publisher><publisher-name xml:lang="en">Federal Scientific Center of Hygiene named after F.F. Erisman</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">638754</article-id><article-id pub-id-type="doi">10.47470/0016-9900-2021-100-12-1455-1461</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>PREVENTIVE TOXICOLOGY AND HYGIENIC STANDARTIZATION</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ПРОФИЛАКТИЧЕСКАЯ ТОКСИКОЛОГИЯ И ГИГИЕНИЧЕСКОЕ НОРМИРОВАНИЕ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Investigation of changes in rat’s blood metabolomic profile, caused by lead exposure</article-title><trans-title-group xml:lang="ru"><trans-title>Изучение изменений метаболомного профиля крови крыс, вызванных воздействием свинца</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6167-7347</contrib-id><name-alternatives><name xml:lang="en"><surname>Chemezov</surname><given-names>Aleksey I.</given-names></name><name xml:lang="ru"><surname>Чемезов</surname><given-names>Алексей Игоревич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, junior researcher of Molecular biology and electron microscopy department Yekaterinburg Medical Research Centerfor Prophylaxis and Health Protection in Industrial Workers, Ekaterinburg, 620014, Russian Federation.</p><p>e-mail: chemezov@ymrc.ru</p></bio><bio xml:lang="ru"><p>Мл. науч. сотр. отд. молекулярной биологии и электронной микроскопии ФБУН ЕМНЦ ПОЗРПП, 620014, Екатеринбург.</p><p>e-mail: chemezov@ymrc.ru</p></bio><email>chemezov@ymrc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1743-7642</contrib-id><name-alternatives><name xml:lang="en"><surname>Sutunkova</surname><given-names>Marina P.</given-names></name><name xml:lang="ru"><surname>Сутункова</surname><given-names>М. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2677-0479</contrib-id><name-alternatives><name xml:lang="en"><surname>Ryabova</surname><given-names>Julija V.</given-names></name><name xml:lang="ru"><surname>Рябова</surname><given-names>Ю. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Yekaterinburg Medical Research Center for Prophylaxis and Health Protection in Industrial Workers</institution></aff><aff><institution xml:lang="ru">ФБУН «Екатеринбургский медицинский - научный центр профилактики и охраны здоровья рабочих промпредприятий» Федеральной службы по надзору в сфере защиты прав потребителей и благополучия человека</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-12-23" publication-format="electronic"><day>23</day><month>12</month><year>2021</year></pub-date><volume>100</volume><issue>12</issue><fpage>1455</fpage><lpage>1461</lpage><history><date date-type="received" iso-8601-date="2024-10-25"><day>25</day><month>10</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Chemezov A.I., Sutunkova M.P., Ryabova J.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Чемезов А.И., Сутункова М.П., Рябова Ю.В.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Chemezov A.I., Sutunkova M.P., Ryabova J.V.</copyright-holder><copyright-holder xml:lang="ru">Чемезов А.И., Сутункова М.П., Рябова Ю.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2022-12-30"/></permissions><self-uri xlink:href="https://journals.eco-vector.com/0016-9900/article/view/638754">https://journals.eco-vector.com/0016-9900/article/view/638754</self-uri><abstract xml:lang="en"><p><italic><bold>Introduction. </bold>The prevalence of lead in the environment, due to human production and economic activities, and the xenobiotic nature of the element substantiate the relevance of studying the changes caused by the action of this metal.</italic></p><p><italic><bold>Materials and methods. </bold>A non-target metabolomic screening of the blood of rats exposed to intraperitoneal administration of lead acetate by HPLC-mass spectrometry was carried out. The expression of the selected masses was compared with those for the control group of animals. The masses that significantly changed the intensity compared to the control were subjected to fragmentation to obtain characteristic fragments. The annotation of metabolites was performed by searching in MS/MS databases and by comparison with in silico fragmentation spectra. The involvement of annotated metabolites in metabolic processes was established by literature analyzing.</italic></p><p><italic><bold>Results. </bold>Non-target metabolomic screening revealed 37 m/z values for the exposed group, significantly changing the intensity compared to the control. Annotation using fragmentation spectra and in silico fragmentation allows establishing the structure of eight metabolites, including an epoxy derivative of linolic acid, 15-hydroxyeicosatetraenoic acid, four oxo- and hydroxyacylcarnitine derivatives of long-chain fatty acids, one acylcarnitine derivatives of medium-chain fatty acids and one lysophosphoserine.</italic></p><p><italic><bold>Conclusion. </bold>Analyzing the literature, the known functions of the identified metabolites were established and attributed to the known metabolic processes. So, oxo- and hydroxyacylcarnitines are derivatives for intermediate products of β-oxidation fatty acids - it is increased concentration compared to the control indicates a violation of this process under the influence of oxidative stress caused by lead. Epoxy and 15-hydroxy derivatives of fatty acids (increased content relative to the control group) act as regulatory metabolites (vasodynamic activity), on the one hand, and markers of lead-induced hypoxia on the other hand. The increase of the concentration for the lysophosphatidylserine derivative indicates the intensification of apoptotic processes in the organism of the exposed group in contrast to the control.</italic></p><p><bold>Contribution: </bold></p><p><italic>Chemezov A.I. </italic>— concept and design of the study, collection and processing of material, statistical processing, writing text;</p><p><italic>Sutunkova M.P. </italic>— concept and design of the study, editing, approval of the final version of the article, responsibility for the integrity of all parts of the article;</p><p><italic>Ryabova Ju.V. </italic>— collection and processing of material, statistical processing.</p><p><italic>All authors </italic>are responsible for the integrity of all parts of the manuscript and approval of the manuscript final version.</p><p><bold>Conflict of interest. </bold>The authors declare no conflict of interest.</p><p><bold>Acknowledgement. </bold>The study had no sponsorship.</p><p><bold>Conclusion of the Bioethical Committee: </bold>The study was conducted according to the guidelines of the Declaration of Helsinki and approved by the Local Ethics Committee of the Yekaterinburg Medical Research Center for Prophylaxis and Health Protection in Industrial Workers (Protocol No eight dated 18.11.2018).</p><p>Received: November 8, 2021 / Accepted: November 25, 2021 / Published: December 30, 2021</p></abstract><trans-abstract xml:lang="ru"><p><italic><bold>Введение. </bold>Распространённость свинца в окружающей среде, обусловленная производственно-хозяйственной деятельностью человека, а также токсичность соединений элемента обосновывают актуальность исследования изменений, вызванных действием данного металла.</italic></p><p><italic><bold>Материалы и методы. </bold>Проведён нецелевой метаболомный скриниг крови крыс, подвергнутых внутрибрюшинному введению ацетата свинца, методом ВЭЖХ-масс-спектрометрии. Экспрессию выявленных масс сравнивали с аналогичными для контрольной группы животных. Массы, статистически значимо изменившие интенсивность в сравнении с контролем, подвергали фрагментации с целью получения характеристических осколков. Аннотацию метаболитов проводили посредством поиска по МС/МС базам данных, а также сравнением с in silico спектрами фрагментации. Вовлечённость в метаболические процессы аннотированных метаболитов устанавливали посредством анализа литературных источников.</italic></p><p><italic><bold>Результаты. </bold>Нецелевой метаболомный скриниг выявил 37 значений m/z экспонированной группы, статистически значимо изменяющих интенсивность в сравнении с контролем. Аннотация с использованием спектров фрагментации, а также in silico фрагментации позволила установить структуру 8 метаболитов, в числе которых эпоксипроизводное линолевой кислоты, 15-гидроксиэйкозатетраеновая кислота, 4 оксо- и гидроксиацилкарнитиновых производных длинноцепочечных жирных кислот, один представитель ацилкарнитинов среднецепочечных жирных кислот и лизофосфатидилсериновое производное.</italic></p><p><italic><bold>Заключение. </bold>При анализе литературы были соотнесены функции выявленных метаболитов, а также произведено отнесение к известным метаболическим процессам. Так, и оксо- и гидроксиацилкарнитины представляют собой производные промежуточных продуктов β-окисления жирных кислот — их повышенная концентрации в сравнении с контролем свидетельствует о нарушении этого процесса под влиянием окислительного стресса, вызванного свинцом. Эпокси- и 15-гидроксипроизводные жирных кислот выступают в роли регуляторных метаболитов, с одной стороны, и с другой — являются маркерами гипоксии, вызванной свинцом. Повышение концентрации лизофосфатидилсеринового производного свидетельствует об интенсификации апоптических процессов в организме животных экспонированной группы в сравнении с контрольной.</italic></p><p><bold>Участие авторов: </bold></p><p><italic>Чемезов А.И. —</italic> концепция и дизайн исследования, сбор и обработка материала, статистическая обработка, написание текста;</p><p><italic>Сутункова М.П. —</italic> концепция и дизайн исследования, редактирование, утверждение окончательного варианта статьи, ответственность за целостность всех частей статьи;</p><p><italic>Рябова Ю.В. —</italic> сбор и обработка материала, статистическая обработка.</p><p><italic>Все соавторы —</italic> утверждение окончательного варианта статьи, ответственность за целостность всех частей статьи.</p><p><bold>Конфликт интересов. </bold>Авторы декларируют отсутствие явных и потенциальных конфликтов интересов в связи с публикацией данной статьи.</p><p><bold>Финансирование. </bold>Исследование не имело спонсорской поддержки.</p><p><bold>Заключение биоэтического комитета: </bold>исследование было проведено в соответствии с положениями Хельсинкской декларации и одобрено Локальным этическим комитетом Федерального бюджетного учреждения науки «Екатеринбургский медицинский-научный центр биопрофилактики и охраны здоровья рабочих промышленных предприятий» Роспотребнадзора (Протокол № 8 от 8.11.2018 г.).</p><p>Поступила: 08.11.2021 / Принята к печати: 25.11.2021 / Опубликована: 30.12.2021</p></trans-abstract><kwd-group xml:lang="en"><kwd>metabolomics</kwd><kwd>UHPLC-MS/MS</kwd><kwd>lead</kwd><kwd>Pb</kwd><kwd>blood</kwd><kwd>rat</kwd><kwd>acylcarnitine</kwd><kwd>eicosanoids</kwd><kwd>lysophosphoserine</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>метаболомика</kwd><kwd>УВЭЖХ-МС/МС</kwd><kwd>свинец</kwd><kwd>кровь</kwd><kwd>крысы</kwd><kwd>ацилкарнитины</kwd><kwd>эйкозаноиды</kwd><kwd>лизофосфатидилсерины</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Seleznev A.A., Yarmoshenko I.V., Malinovsky G.P. 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