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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="ru"><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">333</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2019-14-1-31-39</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>INFECTION PROBLEMS IN ONCOHEMATOLOGY</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ПРОБЛЕМЫ ИНФЕКЦИЙ В ОНКОГЕМАТОЛОГИИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Molecular characterization of extended-spectrum β-lactamase-producing <italic>Escherichia coli</italic> collected from patients with hematological malignancies during chemotherapy cycles</article-title><trans-title-group xml:lang="ru"><trans-title>Молекулярно-генетические характеристики <italic>Escherichia coli</italic> с продукцией β-лактамаз расширенного спектра, выделенных от больных гемобластозами при цитостатической терапии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6268-5282</contrib-id><name-alternatives><name xml:lang="en"><surname>Korobova</surname><given-names>A. G.</given-names></name><name xml:lang="ru"><surname>Коробова</surname><given-names>A. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>amalofeeva@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1127-3333</contrib-id><name-alternatives><name xml:lang="en"><surname>Khrulnova</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Хрульнова</surname><given-names>С. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3414-9316</contrib-id><name-alternatives><name xml:lang="en"><surname>Tandilova</surname><given-names>K. S.</given-names></name><name xml:lang="ru"><surname>Тандилова</surname><given-names>К. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5339-2675</contrib-id><name-alternatives><name xml:lang="en"><surname>Novikova</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Новикова</surname><given-names>A. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5973-5763</contrib-id><name-alternatives><name xml:lang="en"><surname>Klyasova</surname><given-names>G. A.</given-names></name><name xml:lang="ru"><surname>Клясова</surname><given-names>Г. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National Research Center for Hematology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр гематологии» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">4 Novyy Zykovskiy Proezd, Moscow 125167</institution></aff><aff><institution xml:lang="ru">Россия, 125167 Москва, Новый Зыковский проезд, 4</institution></aff></aff-alternatives><content-language>ru</content-language><pub-date date-type="pub" publication-format="electronic" iso-8601-date="2019-04-10"><day>10</day><month>04</month><year>2019</year></pub-date><pub-date date-type="collection"><year>2019</year></pub-date><volume>14</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>31</fpage><lpage>39</lpage><history><date date-type="received" iso-8601-date="2019-04-10"><day>10</day><month>04</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-04-10"><day>10</day><month>04</month><year>2019</year></date></history><pub-history><event event-type="received"><event-desc>Received:<date date-type="received" iso-8601-date="2019-04-10"><day>10</day><month>04</month><year>2019</year></date></event-desc></event><event event-type="accepted"><event-desc>Accepted:<date date-type="accepted" iso-8601-date="2019-04-10"><day>10</day><month>04</month><year>2019</year></date></event-desc></event><event event-type="pub"><event-desc>Published:<pub-date date-type="pub" publication-format="electronic" iso-8601-date="2019-04-10"><day>10</day><month>04</month><year>2019</year></pub-date></event-desc></event></pub-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/333">https://oncohematology.abvpress.ru/ongm/article/view/333</self-uri><abstract xml:lang="en"><p><bold><italic>Objective: </italic></bold><italic>to evaluate the genetic relatedness of extended-spectrum </italic><italic>β</italic><italic>-lactamase (ESBL) producing Escherichia coli isolated from the gut in patients with acute myeloid leukemia and lymphoma at admission and during chemotherapy cycles. </italic><bold><italic>Materials and methods. </italic></bold><italic>The prospective study (2013–2014) included 73 patients (median age 39 years) with acute myeloid leukemia (n = 25) and lymphoma (n = 48). The follow-up period lasted for 96 days. ESBL-producing E. coli isolated from the gut were included in this study. ESBL-production was confirmed by phenotypic tests, bla</italic><italic>CTX-M </italic><italic>and bla</italic><italic>TEM </italic><italic>genes were detected by polymerase chain reaction, and genotyping was performed by ERIC (Enterobacterial Repetitive Intergenic Consensus) polymerase chain reaction. </italic><bold><italic>Results. </italic></bold><italic>ESBL-producing E. coli were detected in 39 (53 %) of 73 patients: of them 12 (16 %) patients were colonized at admission and 27 (37 %) patients – during chemotherapy cycles. Gene bla</italic><italic>CTX-M </italic><italic>was detected in 67 % of E. coli, bla</italic><italic>TEM </italic><italic>– in 41 %, both genes – in 26 %. There was no genetically related ESBL-producing E. coli among 12 isolates detected at admission. Genetic relatedness was detected in 16 (59 %) of 27 isolates obtained during a hospital stay. Genetically related ESBL-producing E. coli were isolated from patients hospitalized in the same and different departments, these isolates were characterized by the presence of both identical and various determinants of resistance. </italic><bold><italic>Conclusion. </italic></bold><italic>Our data demonstrated the possibility of patient-to-patient transmission of ESBL-producing E. coli isolated from the gut during a hospital stay.</italic></p></abstract><trans-abstract xml:lang="ru"><p><bold><italic>Цель исследования </italic></bold><italic>– изучить генетическое родство изолятов Escherichia coli с продукцией </italic><italic>β</italic><italic>-лактамаз расширенного спектра (БЛРС), выделенных со слизистой оболочки кишечника от больных острыми миелоидными лейкозами и лимфомами при первом поступлении в стационар и в процессе цитостатической терапии. </italic><bold><italic>Материалы и методы. </italic></bold><italic>В проспективное исследование (2013–2014 гг.) были включены 73 больных (медиана возраста 39 лет), из них 25 больных острыми миелоидными лейкозами и 48 больных лимфомами. Период наблюдения составил 96 дней. Материалом исследования были изоляты E. coli с продукцией БЛРС, выделенные со слизистой оболочки прямой кишки. Детекцию БЛРС проводили фенотипическими методами, генов bla</italic><italic>CTX-M</italic><italic>и bla</italic><italic>TEM </italic><italic>– методом полимеразной цепной реакции, генотипирование – методом ERIC (Enterobacterial Repetitive Intergenic Consensus) полимеразной цепной реакции. </italic><bold><italic>Результаты. </italic></bold><italic>Изоляты E. coli с продукцией БЛРС были выделены у 39 (53 %) из 73 больных, из них у 12 (16 %) – при первом поступлении, у 27 (37 %) – в период цитостатической терапии. Гены bla</italic><italic>CTX-M</italic><italic>были определены у 67 % изолятов E. coli, bla</italic><italic>TEM </italic><italic>– у 41 %, оба гена – у 26 %. Среди 12 БЛРС-положительных E. coli, выделенных при первом поступлении в стационар, не было выявлено генетически родственных изолятов. У 16 (59 %) из 27 изолятов, полученных в процессе пребывания в стационаре, отмечено наличие генетического родства. Генетически родственные изоляты были выделены от больных, находившихся на лечении не только в одном, но и в разных отделениях, и характеризовались наличием как идентичных, так и разных детерминант устойчивости. </italic><bold><italic>Заключение. </italic></bold><italic>Исследование доказало возможность передачи изолятов E. coli с продукцией БЛРС, колонизирующих слизистую оболочку кишечника, от одного больного к другому в период их пребывания в стационаре.</italic></p></trans-abstract><kwd-group xml:lang="en"><kwd>extended spectrum β-lactamases</kwd><kwd>Escherichia coli</kwd><kwd>genotyping</kwd><kwd>colonization of gut</kwd><kwd>hematological malignancies</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>β-лактамазы расширенного спектра</kwd><kwd>Escherichia coli</kwd><kwd>генотипирование</kwd><kwd>колонизация слизистой оболочки кишечника</kwd><kwd>гемобластозы</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">1. 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