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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">Oncohematology</journal-id><journal-title-group><journal-title xml:lang="en">Oncohematology</journal-title><trans-title-group xml:lang="ru"><trans-title>Онкогематология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1818-8346</issn><issn publication-format="electronic">2413-4023</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">478</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2021-16-2-86-93</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>SUPPORTIVE THERAPY ASPECTS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>АСПЕКТЫ ПОДДЕРЖИВАЮЩЕЙ ТЕРАПИИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">The microbiome role in pathogenesis of inflammatory and immune alterations of gastrointestinal tract in pediatric patients with cancer</article-title><trans-title-group xml:lang="ru"><trans-title>Роль микробиома в патогенезе инфекционного и иммунологического повреждения желудочно-кишечного тракта у детей с онкогематологическими заболеваниями</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9540-1162</contrib-id><name-alternatives><name xml:lang="en"><surname>Morgacheva</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Моргачева</surname><given-names>Д. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dar’ya Andreevna Morgacheva</p><p>2 Akkuratova St., Saint-Petersburg 197341</p></bio><bio xml:lang="ru"><p>Дарья Андреевна Моргачева</p><p>197341 Санкт-Петербург, ул. Аккуратова, 2</p><p> </p></bio><email>morgachevadarya483@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2003-0982</contrib-id><name-alternatives><name xml:lang="en"><surname>Dinikina</surname><given-names>Yu. V.</given-names></name><name xml:lang="ru"><surname>Диникина</surname><given-names>Ю. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>2 Akkuratova St., Saint-Petersburg 197341</p></bio><bio xml:lang="ru"><p>197341 Санкт-Петербург, ул. Аккуратова, 2</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9753-9536</contrib-id><name-alternatives><name xml:lang="en"><surname>Toshina</surname><given-names>Yu. K.</given-names></name><name xml:lang="ru"><surname>Тошина</surname><given-names>Ю. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>2 Akkuratova St., Saint-Petersburg 197341</p></bio><bio xml:lang="ru"><p>197341 Санкт-Петербург, ул. Аккуратова, 2</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7471-7181</contrib-id><name-alternatives><name xml:lang="en"><surname>Belogurova</surname><given-names>M. B.</given-names></name><name xml:lang="ru"><surname>Белогурова</surname><given-names>М. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>2 Akkuratova St., Saint-Petersburg 197341</p></bio><bio xml:lang="ru"><p>197341 Санкт-Петербург, ул. Аккуратова, 2</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">V.A. Almazov National Medical Research Centre, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр им. В.А. Алмазова» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-06-07" publication-format="electronic"><day>07</day><month>06</month><year>2021</year></pub-date><volume>16</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>86</fpage><lpage>93</lpage><history><date date-type="received" iso-8601-date="2021-06-06"><day>06</day><month>06</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2021-06-06"><day>06</day><month>06</month><year>2021</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://oncohematology.abvpress.ru/ongm/article/view/478">https://oncohematology.abvpress.ru/ongm/article/view/478</self-uri><abstract xml:lang="en"><p>Infectious complications remain one of the most significant problem associated with anticancer therapy in oncological patients. Cytotoxic, radiation and antibacterial therapy induce dysbiosis and gastrointestinal mucosal barrier injury. These changes lead to the mucositis, thereby increasing the risk of endogenous microflora translocation with following probable development of severe infectious and inflammatory diseases. In addition, current evidence suggests that there is a relationship between gut microbiome disturbances and post-transplant graft versus host disease development. The article presents the existing paradigms of determining the role of gastrointestinal tract functional condition in cancer patients in order to optimize prevention and antimicrobial treatment approaches.</p></abstract><trans-abstract xml:lang="ru"><p>Инфекционные осложнения остаются одной из наиболее значимых проблем, ассоциированных с противоопухолевой терапией у онкологических пациентов. В результате проводимой цитотоксической, лучевой, а также антибактериальной терапии возникают дисбиоз и повреждение слизистого барьера желудочно-кишечного тракта. Эти изменения приводят к развитию мукозита, тем самым повышая риск эндогенной транслокации микрофлоры с последующим вероятным развитием тяжелых инфекционно-воспалительных  заболеваний. Кроме этого, существующие на сегодняшний день данные свидетельствуют о наличии взаимосвязи между нарушениями в кишечном микробиоме и развитием посттрансплантационной реакции «трансплантат против хозяина». В статье приведены существующие парадигмы в отношении определения роли функционального состояния желудочно-кишечного тракта у онкологических пациентов в целях оптимизации подходов к профилактике и противомикробному лечению.</p></trans-abstract><kwd-group xml:lang="en"><kwd>pediatric oncology</kwd><kwd>chemotherapy</kwd><kwd>mucositis</kwd><kwd>febrile neutropenia</kwd><kwd>translocation</kwd><kwd>intestinal microbiome</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>детская онкология</kwd><kwd>химиотерапия</kwd><kwd>мукозит</kwd><kwd>фебрильная нейтропения</kwd><kwd>транслокация</kwd><kwd>кишечный микробиом</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Van Vliet M.J., Tissing W.J., Dun C.A. et al. Chemotherapy treatment in pediatric patients with acute myeloid leukemia receiving antimicrobial prophylaxis leads to a relative increase of colonization with potentially pathogenic bacteria in the gut. 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