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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">rosped</journal-id><journal-title-group><journal-title xml:lang="ru">Российский педиатрический журнал имени М.Я. Студеникина</journal-title><trans-title-group xml:lang="en"><trans-title>M.Ya. Studenikin Russian Pediatric Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">3033-9006</issn><issn pub-type="epub">3033-9014</issn><publisher><publisher-name>ФГАУ «НМИЦ здоровья детей» Минздрава России</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.46563/1560-9561-2023-26-2-118-124</article-id><article-id custom-type="edn" pub-id-type="custom">vcdjxh</article-id><article-id custom-type="elpub" pub-id-type="custom">rosped-21</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL INVESTIGATIONS</subject></subj-group></article-categories><title-group><article-title>Характеристика и свойства Serratiaе marcescens, выделенной при бактериемии у детей</article-title><trans-title-group xml:lang="en"><trans-title>Characteristics and properties of Serratia marcescens isolated in bacteremia in children</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Садеева</surname><given-names>Зульфиря Закиевна</given-names></name><name name-style="western" xml:lang="en"><surname>Sadeeva</surname><given-names>Zulfirya Z.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мл. науч. сотр., лаб. молекулярной микробиологии ФГАУ «НМИЦ здоровья детей» Минздрава России</p><p>e-mail: zulfiryasadeeeva@yandex.ru</p></bio><bio xml:lang="en"><p>Junior researcher of the Laboratory of molecular microbiology of the National Medical Research Center for Children’s Health, Moscow, 119991, Russian Federation</p><p>e-mail: zulfiryasadeeeva@yandex.ru</p></bio><email xlink:type="simple">zulfiryasadeeeva@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Новикова</surname><given-names>Ирина Евгеньевна</given-names></name><name name-style="western" xml:lang="en"><surname>Novikova</surname><given-names>Irina E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мл. науч. сотр., лаб. молекулярной микробиологии ФГАУ «НМИЦ здоровья детей» Минздрава России</p><p>e-mail: novikovayudina@outlook.com</p></bio><email xlink:type="simple">novikovayudina@outlook.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алябьева</surname><given-names>Наталья Михайловна</given-names></name><name name-style="western" xml:lang="en"><surname>Alyabyeva</surname><given-names>Natalya M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. мед. наук, ст. науч. сотр., зав. лаб. экспериментальной иммунологии и вирусологии ФГАУ «НМИЦ здоровья детей» Минздрава России</p><p>e-mail: bambolinka@hotmail.com</p></bio><email xlink:type="simple">bambolinka@hotmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лазарева</surname><given-names>Анна Валерьевна</given-names></name><name name-style="western" xml:lang="en"><surname>Lazareva</surname><given-names>Anna V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор мед. наук, зав. лаб. микробиологии, гл. науч. сотр., лаб. молекулярной микробиологии ФГАУ «НМИЦ здоровья детей» Минздрава России</p><p>e-mail: annalaz71@mail.ru</p></bio><email xlink:type="simple">annalaz71@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самойлова</surname><given-names>Екатерина Александровна</given-names></name><name name-style="western" xml:lang="en"><surname>Samoilova</surname><given-names>Ekaterina A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мл. науч. сотр., лаб. молекулярной микробиологии ФГАУ «НМИЦ здоровья детей» Минздрава России</p><p>e-mail: katysamoilova@yandex.ru</p></bio><email xlink:type="simple">katysamoilova@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карасева</surname><given-names>Ольга Витальевна</given-names></name><name name-style="western" xml:lang="en"><surname>Karaseva</surname><given-names>Olga V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор мед. наук, зам. директора по научной работе, руководитель отдела сочетанной травмы, анестезиологии-реанимации «НИИ неотложной детской хирургии и травматологии»</p><p>e-mail: karaseva.o@list.ru</p></bio><email xlink:type="simple">karaseva.o@list.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Янушкина</surname><given-names>Ольга Грантовна</given-names></name><name name-style="western" xml:lang="en"><surname>Yanushkina</surname><given-names>Olga G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Науч. сотр. отд-ния сочетанной травмы «НИИ неотложной детской хирургии и травматологии»</p><p>e-mail: spartak-lfc@mail.ru</p></bio><email xlink:type="simple">spartak-lfc@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вершинина</surname><given-names>Марина Германовна</given-names></name><name name-style="western" xml:lang="en"><surname>Vershinina</surname><given-names>Marina G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. мед. наук, вед. науч. сотр., лаб. медицинской геномики ФГАУ «НМИЦ здоровья детей» Минздрава России</p><p>e-mail: vershinina.mg@nczd.ru</p></bio><email xlink:type="simple">vershinina.mg@nczd.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фисенко</surname><given-names>Андрей Петрович</given-names></name><name name-style="western" xml:lang="en"><surname>Fisenko</surname><given-names>Andrey P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор мед. наук, проф., директор ФГАУ «НМИЦ здоровья детей» Минздрава России</p><p>e-mail: director@nczd.ru</p></bio><email xlink:type="simple">director@nczd.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГАУ «Национальный медицинский исследовательский центр здоровья детей» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Center for Children’s Health</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГАУ «Национальный медицинский исследовательский центр здоровья детей» Минздрава России; НИИ неотложной детской хирургии и травматологии Департамента здравоохранения г. Москвы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Center for Children’s Health; Clinical and Research Institute of Emergency Pediatric Surgery and Trauma</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>НИИ неотложной детской хирургии и травматологии Департамента здравоохранения г. Москвы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Clinical and Research Institute of Emergency Pediatric Surgery and Trauma</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>09</day><month>08</month><year>2023</year></pub-date><volume>23</volume><issue>2</issue><fpage>118</fpage><lpage>124</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Садеева З.З., Новикова И.Е., Алябьева Н.М., Лазарева А.В., Самойлова Е.А., Карасева О.В., Янушкина О.Г., Вершинина М.Г., Фисенко А.П., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Садеева З.З., Новикова И.Е., Алябьева Н.М., Лазарева А.В., Самойлова Е.А., Карасева О.В., Янушкина О.Г., Вершинина М.Г., Фисенко А.П.</copyright-holder><copyright-holder xml:lang="en">Sadeeva Z.Z., Novikova I.E., Alyabyeva N.M., Lazareva A.V., Samoilova E.A., Karaseva O.V., Yanushkina O.G., Vershinina M.G., Fisenko A.P.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.rosped.ru/jour/article/view/21">https://www.rosped.ru/jour/article/view/21</self-uri><abstract><sec><title>Введение</title><p>Введение. Serratia marcescens — условно-патогенный грамотрицательный микроорганизм, который в последние годы с возрастающей частотой определяется в различном клиническом биоматериале от больных людей и является возбудителем внутрибольничных инфекций.</p><p>Цель работы — определить микробиологические и клинические особенности S. marcescens при инфекции кровотока у детей.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Из гемокультур выделены 19 изолятов S. marcescens. Чувствительность к антибиотикам определяли методом микроразведений в бульоне. Гены карбапенемаз выявляли с помощью полимеразной цепной реакции в реальном времени. Биоплёнкообразование изучали на абиотических поверхностях с использованием полистироловых плоскодонных планшетов. Популяционное разнообразие определяли методом многолокусного генотипического анализа.</p></sec><sec><title>Результаты</title><p>Результаты. Наибольшую антимикробную активность in vitro проявляли карбапенемы, фосфомицин и бисептол. К аминогликозидам, азтреонаму, цефепиму и тикарциллин/клавуланату резистентность составила более 50%. По данным ПЦР, в 11% случаев встречались только карбапенемазы ОХА-48, в 5% — только NDM, у 15% изолятов — комбинация карбапенемаз. Биоплёнки умеренной интенсивности образовывали 13 (68%) изолятов, слабой — 6 (32%). По данным генотипического анализа большая доля изолятов, обладающих множественной резистентностью, входила в одну группу. Все они были выделены в один год из одного отделения — возможно, имел место единый источник. В 3 наблюдениях у пациентов был диагностирован сепсис, 1 случай из них имел неблагоприятный исход. Бактериемия возникла на 3-и сутки после первичного выделения S. marcescens. Неблагоприятный исход наступил на 10-е сутки бактериемии. S. marcescens в этом случае обладала множественной резистентностью и комбинацией генов резистентности, а также принадлежала к часто встречающейся в нашей работе генотипической группе I.</p></sec><sec><title>Заключение</title><p>Заключение. S. marcescens при инфекциях кровотока является серьёзной проблемой для пациентов педиатрического профиля. Природная устойчивость к полимиксинам, а также приобретённая резистентность к карбапенемам и аминогликозидам вызывают особую настороженность и внимание к этому микробному агенту.</p></sec><sec><title>Участие авторов</title><p>Участие авторов:Садеева З.З., Лазарева А.В. — концепция и дизайн исследования;Садеева З.З., Новикова И.Е., Самойлова Е.А., Янушкина О.Г. — сбор и обработка материала;Садеева З.З., Лазарева А.В. — написание текста;Алябьева Н.М. — статистическая обработка материала;Лазарева А.В., Карасева О.В., Вершинина М.Г., Фисенко А.П. — редактирование.Все соавторы — утверждение окончательного варианта статьи, ответственность за целостность всех частей статьи.</p></sec><sec><title>Финансирование</title><p>Финансирование. Исследование не имело финансовой поддержки.</p></sec><sec><title>Конфликт интересов</title><p>Конфликт интересов. Авторы заявляют об отсутствии конфликта интересов. </p></sec><sec><title>Поступила 17</title><p>Поступила 17.02.2023Принята к печати 21.03.2023Опубликована 28.04.2023</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Serratia marcescens is an opportunistic gram-negative microorganism, currently has been detected with increasing frequency in various clinical biomaterials from sick persons is the causative agent of nosocomial infections.</p><p>The aim of the work is to determine microbiological and clinical features of S. marcescens in bloodstream infections in children. </p></sec><sec><title>Materials and methods</title><p>Materials and methods. Nineteen isolates of S. marcescens were isolated from blood cultures. Antibiotic sensitivity was determined by broth microdilution method. Carbapenemase gene were determined using real-time polymerase chain reaction. Biofilm formation was studied on abiotic surfaces using polystyreneplates. Population diversity was determined by multilocus genotypic analysis. </p></sec><sec><title>Results</title><p>Results. Carbapenems, fosfomycin and biseptol showed the highest antimicrobial activity in vitro. Resistance to aminoglycosides, aztreonam, cefepime, and ticarcillin/clavulanate was over 50%. According to PCR data, only OXA-48 carbapenemases were found in 11% of isolates, NDM — in 5%, and a combination of carbapenemases — in 15%. Biofilms of moderate intensity were formed in 13 (68%) isolates, and weak biofilms — in 6 (32%). According to the genotypic analysis, a large proportion of isolates with multiple resistance were included in one group. All of them were singled out over one year from one department — perhaps there was a single source. In 3 cases, patients were diagnosed with sepsis, 1 of them had an unfavourable outcome. Bacteremia occurred on the 3rd day after the initial isolation of S. marcescens. An unfavourable outcome occurred on the 10th day of bacteremia. S. marcescens in this case had multiple resistance and a combination of resistance genes, also belonged to genotypic group I, which is often found in our work.</p></sec><sec><title>Conclusion</title><p>Conclusion. S. marcescens in bloodstream infections is a serious problem for pediatric patients. Natural resistance to polymyxins, as well as acquired resistance to carbapenems and aminoglycosides, cause particular alertness and attention to this microbial agent.</p></sec><sec><title>Contribution</title><p>Contribution:Sadeeva Z.Z., Lazareva A.V. — research concept and design of the study;Sadeeva Z.Z., Novikova I.E., Samoilova E.A., Yanushkina O.G. — collection and processing of material;Sadeeva Z.Z., Lazareva A.V. — text writing;Alyabyeva N.M. — statistical processing;Lazareva A.V., Karaseva O.V., Vershinina M.G., Fisenko A.P. — editing.All co-authors — approval of the final version of the article, responsibility for the integrity of all parts of the article.</p></sec><sec><title>Acknowledgment</title><p>Acknowledgment. The study had no sponsorship.</p></sec><sec><title>Conflict of interest</title><p>Conflict of interest. The authors declare no conflict of interest.</p></sec><sec><title>Received</title><p>Received: February 17, 2023Accepted: March 21, 2023Published: April 28, 2023</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>Serratia marcescen</kwd><kwd>карбапенемазы</kwd><kwd>резистентность</kwd><kwd>вирулентность</kwd><kwd>бактериемия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>S. marcescens</kwd><kwd>carbapenemases</kwd><kwd>resistance</kwd><kwd>virulence</kwd><kwd>bacteremia</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Besler K.R., Little E.L. Diversity of Serratia marcescens strains associated with cucurbit yellow vine disease in Georgia. Plant Dis. 2017; 101(1): 129–36. https://doi.org/10.1094/PDIS-05-16-0618-RE</mixed-citation><mixed-citation xml:lang="en">Besler K.R., Little E.L. 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