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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">Annals of the Russian academy of medical sciences</journal-id><journal-title-group><journal-title xml:lang="en">Annals of the Russian academy of medical sciences</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российской академии медицинских наук</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-6047</issn><issn publication-format="electronic">2414-3545</issn><publisher><publisher-name xml:lang="en">"Paediatrician" Publishers LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">491</article-id><article-id pub-id-type="doi">10.15690/vramn.v70.i4.1409</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>MICROBIOLOGY: CURRENT ISSUES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>АКТУАЛЬНЫЕ ВОПРОСЫ МИКРОБИОЛОГИИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Species Diversity of Bifidobacteria in the Intestinal Microbiota Studied Using MALDI-TOF Mass-Spectrometry</article-title><trans-title-group xml:lang="ru"><trans-title>Изучение видового разнообразия бактерий рода Bifidobacterium кишечной микрофлоры с использованием метода MALDI-TOF масс-спектрометрии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chaplin</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Чаплин</surname><given-names>Андрей Викторович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>аспирант кафедры микробиологии и вирусологии,</p><p>117997, Москва, ул. Островитянова, д. 1</p></bio><email>okolomedik@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Brzhozovskii</surname><given-names>A. G.</given-names></name><name xml:lang="ru"><surname>Бржозовский</surname><given-names>Александр Геннадьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>лаборант-исследователь,</p><p>117997, Москва, ул. Островитянова, д. 1</p><p> </p></bio><email>barjik@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Parfenova</surname><given-names>T. V.</given-names></name><name xml:lang="ru"><surname>Парфёнова</surname><given-names>Татьяна Витальевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>лаборант-исследователь, младший научный сотрудник,</p><p>119435, Москва, ул. Малая Пироговская, д. 1а</p></bio><email>parfenova1983@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kafarskaia</surname><given-names>L. I.</given-names></name><name xml:lang="ru"><surname>Кафарская</surname><given-names>Людмила Ивановна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>доктор медицинских наук, профессор, заведующая кафедрой микробиологии и вирусологии,</p><p>117997, Москва, ул. Островитянова, д. 1</p></bio><email>likmed@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Volodin</surname><given-names>N. N.</given-names></name><name xml:lang="ru"><surname>Володин</surname><given-names>Николай Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>доктор медицинских наук, академик РАМН, профессор,</p><p>117997, Москва, ул. Саморы Машела, д. 1</p></bio><email>info@fnkc.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shkoporov</surname><given-names>A. N.</given-names></name><name xml:lang="ru"><surname>Шкопоров</surname><given-names>Андрей Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук, старший научный сотрудник кафедры микробиологии и вирусологии,</p><p>117997, Москва, ул. Островитянова, д. 1</p></bio><email>a.shkoporov@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ilina</surname><given-names>E. N.</given-names></name><name xml:lang="ru"><surname>Ильина</surname><given-names>Елена Николаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>доктор биологических наук, доцент, заведующая лабораторией молекулярной генетики микроорганизмов,</p><p>119435, Москва, ул. Малая Пироговская, д. 1а</p></bio><email>ilinaen@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Efimov</surname><given-names>B. A.</given-names></name><name xml:lang="ru"><surname>Ефимов</surname><given-names>Борис Алексеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>доктор медицинских наук, профессор кафедры микробиологии и вирусологии,</p><p>117997, Москва, ул. Островитянова, д. 1</p></bio><email>efimov_ba@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.I. Pirogov Russian National Research Medical University</institution></aff><aff><institution xml:lang="ru">Российский национальный исследовательский медицинский университет им. Н.И. Пирогова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Research Institute of Physical-Chemical Medicine</institution></aff><aff><institution xml:lang="ru">НИИ физико-химической медицины</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">D. Rogachev Federal Research Center of Pediatric Hematology, Oncology and Immunology</institution></aff><aff><institution xml:lang="ru">Федеральный научно-клинический центр детской гематологии, онкологии и иммунологии им. Д. Рогачёва</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2015-09-29" publication-format="electronic"><day>29</day><month>09</month><year>2015</year></pub-date><volume>70</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>435</fpage><lpage>440</lpage><history><date date-type="received" iso-8601-date="2015-09-28"><day>28</day><month>09</month><year>2015</year></date><date date-type="accepted" iso-8601-date="2015-09-28"><day>28</day><month>09</month><year>2015</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2015, "Paediatrician" Publishers LLC</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2015, Издательство "Педиатръ"</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="en">"Paediatrician" Publishers LLC</copyright-holder><copyright-holder xml:lang="ru">Издательство "Педиатръ"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2016-09-29"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://vestnikramn.spr-journal.ru/jour/about/submissions</ali:license_ref></license></permissions><self-uri xlink:href="https://vestnikramn.spr-journal.ru/jour/article/view/491">https://vestnikramn.spr-journal.ru/jour/article/view/491</self-uri><abstract xml:lang="en"><p><bold>Background:</bold> The members of genus Bifidobacterium represent a significant part of intestinal microbiota in adults and predominate in infants. Species repertoire of the intestinal bifidobacteria is known to be subjected to major changes with age; however, many details of this process are still to be elucidated.</p><p><bold>Objective:</bold> Our aim was to study the diversity of intestinal bifidobacteria and changes of their qualitative and quantitative composition characteristics during the process of growing up using MALDI-TOF mass-spectrometric analysis of pure bacterial cultures.</p><p><bold>Methods:</bold> A cross-sectional study of bifidobacteria in the intestinal microbiota was performed in 93 healthy people of the ages from 1 month to 57 years. Strains were identified using Microflex LT MALDI-TOF MS, the confirmation was performed by 16S rRNA gene fragment sequencing.</p><p><bold>Results:</bold> 93% of isolated bifidobacterial strains were successfully identified using MALDI-TOF mass-spectrometry. At least two of the strains from each species were additionally identified by 16S rRNA gene fragment sequencing, in all of the cases the results were the same. It was shown that the total concentration of bifidobacteria decreases with age (p &lt;0.001) as well as the frequency of isolation of Bifidobacterium bifidum (p =0.020) and Bifidobacterium breve (p &lt;0.001), and the frequency of isolation of Bifidobacterium adolescentis, increases (p &lt;0.001), representing the continuous process of transformation of microbiota.</p><p><bold>Conclusion:</bold> The method of MALDI-TOF mass spectrometry demonstrated the ability to perform rapid and reliable identification of bifidobacteria that allowed the study of changes in the quantitative and qualitative characteristics of human microbiota in the process of growing up.</p></abstract><trans-abstract xml:lang="ru"><p>Представители рода Bifidobacterium представляют значительную часть микрофлоры кишечника взрослых людей и численно доминируют в микрофлоре младенцев. Известно, что видовой состав кишечных бифидобактерий подвергается сильным изменениям с возрастом, однако многие детали этого процесса остаются неясными.</p><p><bold>Цель исследования:</bold> изучить видовое разнообразие бифидобактерий кишечника и изменения их качественного и количественного состава в процессе взросления человека при помощи технологии MALDI-TOF масс-спектрометрического анализа белковых профилей чистых культур.</p><p><bold>Методы:</bold> кросс-секционное исследование разнообразия бифидобактерий в составе нормальной микрофлоры кишечника проведено у 93 человек в возрасте от 1 мес до 57 лет. Осуществляли выделе- ние чистых культур и их идентификацию на приборе Microflex LT MALDI-TOF MS (Bruker Daltonics, Германия), подтверждение реализовывали с использованием секвенирования фрагмента гена 16S рРНК.</p><p><bold>Результаты:</bold> с применением MALDI-TOF масс-спектрометрии было успешно идентифицировано 93% выделенных штаммов бифидобактерий. Минимум по 2 представителя от каждого из видов были дополнительно определены методом секвенирования фрагмента гена 16SрРНК; во всех случаях результаты методов совпали. Показано, что с возрастом происходит снижение общей концентрации бифидобактерий (p &lt;0,001), уменьшается встречаемость видов Bifidobacterium bifidum (p =0,020) и Bifidobacterium breve (p &lt;0,001), а встречаемость вида Bifidobacterium adolescentis увеличивается (p &lt;0,001), отражая постепенные процессы перестройки микрофлоры.</p><p><bold>Заключение:</bold> метод MALDI-TOF масс-спектрометрии показал возможность быстрой и надежной идентификации бифидобактерий, позволившей провести исследование изменений количественных и качественных показателей микрофлоры человека в процессе взросления</p></trans-abstract><kwd-group xml:lang="en"><kwd>bifidobacteria</kwd><kwd>mass-spectrometry</kwd><kwd>intestinal microbiota</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>бифидобактерии</kwd><kwd>масс-спектрометрия</kwd><kwd>микрофлора кишечника</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>1. 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