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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">actabiomedica</journal-id><journal-title-group><journal-title xml:lang="ru">Acta Biomedica Scientifica</journal-title><trans-title-group xml:lang="en"><trans-title>Acta Biomedica Scientifica</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2541-9420</issn><issn pub-type="epub">2587-9596</issn><publisher><publisher-name>Scientific Centre for Family Health and Human Reproduction Problems</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29413/ABS.2019-4.5.8</article-id><article-id custom-type="elpub" pub-id-type="custom">actabiomedica-2169</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>МИКРОБИОЛОГИЯ И ВИРУСОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MICROBIOLOGY AND VIRUSOLOGY</subject></subj-group></article-categories><title-group><article-title>Изменение скорости бактерицидного эффекта стрептомицина при действии на зрелые биоплёнки Еscherichia coli в присутствии экстрактов лекарственных растений</article-title><trans-title-group xml:lang="en"><trans-title>Modulation of Streptomycin Killing Rate against Mature Escherichia Coli Biofilms in the Presence of Medicinal Plant Extracts</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8637-6484</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самойлова</surname><given-names>З. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Samoilova</surname><given-names>Z. Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат биологических наук, старший научный сотрудник лаборатории физиологии и генетики микроорганизмов</p><p>614081, г. Пермь, ул. Голева, 13, Россия</p></bio><bio xml:lang="en"><p>Cand. Sc. (Biol.), Senior Research Officer, Laboratory of Physiology and Genetics of Microorganisms</p><p>Goleva str. 13, 614081 Perm, Russian Federation</p><p> </p></bio><email xlink:type="simple">samoilova@iegm.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>Смирнова</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnova</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор биологических наук, ведущий научный сотрудник лаборатории физиологии и генетики микроорганизмов</p><p>614081, г. Пермь, ул. Голева, 13, Россия</p></bio><bio xml:lang="en"><p>Dr. Sc. (Biol.), Leading Research Officer, Laboratory of Physiology and Genetics of Microorganisms</p><p>Goleva str. 13, 614081 Perm, Russian Federation</p></bio><email xlink:type="simple">smirnova@iegm.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>Октябрьский</surname><given-names>О. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Oktyabrsky</surname><given-names>O. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>профессор, доктор биологических наук, заведующий лабораторией физиологии и генетики микроорганизмов</p><p>https://orcid.org/0000-0002-9864-2094</p><p>614081, г. Пермь, ул. Голева, 13, Россия</p></bio><bio xml:lang="en"><p>Professor, Dr. Sc. (Biol.), Head of the Laboratory of Physiology and Genetics of Microorganisms</p><p>https://orcid.org/0000-0002-9864-2094</p><p>Goleva str. 13, 614081 Perm, Russian Federation</p></bio><email xlink:type="simple">oktyabr@iegm.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт экологии и генетики микроорганизмов УрО РАН, ФГБУН «Пермский федеральный исследовательский центр» УрО РАН</institution></aff><aff xml:lang="en"><institution>Institute of Ecology and Genetics of Microorganisms, Perm Federal Research Center, Ural Branch of Russian Academy of Science</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>12</day><month>11</month><year>2019</year></pub-date><volume>4</volume><issue>5</issue><fpage>50</fpage><lpage>54</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Самойлова З.Ю., Смирнова Г.В., Октябрьский О.Н., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Самойлова З.Ю., Смирнова Г.В., Октябрьский О.Н.</copyright-holder><copyright-holder xml:lang="en">Samoilova Z.Y., Smirnova G.V., Oktyabrsky O.N.</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.actabiomedica.ru/jour/article/view/2169">https://www.actabiomedica.ru/jour/article/view/2169</self-uri><abstract><p>Обоснование. Экстракты лекарственных растений, обладающие про- и антиоксидантным действием, могут оказывать двойственное модулирующее влияние на бактерицидные эффекты антибиотиков.Цель исследования: изучить модулирующие эффекты водных экстрактов лекарственных растений на скорость бактерицидного эффекта стрептомицина при действии на зрелые биопленки Escherichia coli.Методы. Измеряли скорость бактерицидного эффекта и валовое биоплёнкообразование в присутствии различных доз экстрактов и стрептомицина.Результаты. Выявлен синергизм между 100 мкг/мл стрептомицина и низкими дозами (0,83 мг сухого вещества/мл) зелёного, чёрного чая, Arctostaphylos uva-ursi, Betula pendula и Laminaria japonica. В то же время, высокие дозы (6,64 мг сухого вещества/мл) зелёного, чёрного чая и Vaccinium vitis-ideae оказывали антагонистические эффекты, подавляя скорость бактерицидного эффекта и стимулируя биоплёнкообразование. В последнем случае, вероятно, подавлялось проникновение стрептомицина в матрикс биоплёнки, что и способствовало снижению скорости бактерицидного эффекта.Заключение. Широко применяемые человеком в пищу зелёный, чёрный чай и V. vitis-ideae снижали бактерицидный эффект стрептомицина. Эти экстракты также стимулировали биоплёнкообразование, что может положительно сказываться на жизнедеятельности нормальной микрофлоры человека, однако может привести к стимулированию толерантности болезнетворных микробов. Выявленные ситуации подавления скорости бактерицидного эффекта в присутствии испытуемых экстрактов указывают на необходимость корректировки схем лечения, включающих совместный прием антибиотиков и фитопрепаратов. Полученные данные представляют практический интерес и нуждаются в дальнейшем изучении. Исследование выполнено в рамках государственного задания № госрегистрации темы 01201353246, а также при поддержке грантами Президента МК-3376.2018.4 и Программы УрО РАН АААА-А18-118041890005-1.</p></abstract><trans-abstract xml:lang="en"><p>Background. Medicinal plant extracts exhibiting pro- and antioxidant properties may affect antibiotic-induced killing of biofilm-producing bacteria in both synergistic and antagonistic modes. Better understanding of these alternations is required to adjust antibiotic therapy and herbal medicine in order to exclude unwanted losses of antibiotic efficiency.Aim: to study modulation modes of streptomycin killing rate against mature biofilms of Escherichia coli in the presence of different doses of commonly used medicinal plant extracts.Materials and methods. Pharmacodynamic parameter killing rate and mass biofilm formation were determined in the presence of streptomycin and medicinal plant extracts.Results. Synergism was found between 100 mg/ml streptomycin and low doses (0.83 mg of dry herb/ml) of green, black tea, Arctostaphylos uva-ursi, Betula pendula and Laminaria japonica against killing mature biofilms. Alternatively, high doses (6.64 mg of dry herb/ml) of green, black tea and Vaccinium vitis-ideae demonstrated antagonism, decreasing killing rate and enhancing biofilm formation. Presumably, high doses of the extracts were sufficient to enhance biofilm formation blocking penetration of streptomycin through enlarged biofilm matrix and diminishing the killing rate.Conclusions. Widely consumed as soft beverages or for prophylactic purposes green, black tea and V. vitis-ideae could promote strong antagonistic effects with streptomycin. These extracts can stimulate biofilm production, making benefit for commensal microbiota, but have clinical relevance due to a significant reduction in the lethal efficiency of streptomycin in biofilms of pathogenic strains. This highlights the need of careful antibiotic prescription scheme adjustment when choosing appropriate combinations of plant extracts and antibiotics to achieve a synergistic effect.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>биоплёнки</kwd><kwd>стрептомицин</kwd><kwd>скорость бактерицидного эффекта</kwd><kwd>лекарственные растения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>streptomycin</kwd><kwd>killing rate</kwd><kwd>biofilms</kwd><kwd>medicinal plant extracts</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено в рамках государственного задания № госрегистрации темы 01201353246, а также при поддержке грантами Президента МК-3376.2018.4 и Программы УрО РАН АААА-А18-118041890005-1.</funding-statement><funding-statement xml:lang="en">This work was supported by the state assignment 01201353246 and was also supported by a Program of Ural branch of Russian Academy of Sciences [Grant number AAAA-A18-118041890005-1] and by a grant from President of Russian Federation for young scientists [Grant number MK 3376.2018.4].</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">TB Alliance. 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