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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.2022-7.2.10</article-id><article-id custom-type="elpub" pub-id-type="custom">actabiomedica-3416</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>КАРДИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CARDIOLOGY</subject></subj-group></article-categories><title-group><article-title>Сравнение бактериальной флоры, выделенной из периферической крови и клапанных структур сердца пациентов с инфекционным эндокардитом</article-title><trans-title-group xml:lang="en"><trans-title>Comparison of microflora isolated from peripheral blood and valvular structures of the heart in patients with infective endocarditis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0747-2495</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Асанов</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Asanov</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник лаборатории геномной медицины</p><p>650002, г. Кемерово, Сосновый б-р, 6</p></bio><bio xml:lang="en"><p>Junior Research Officer at the Laboratory of Genomic Medicine</p><p>Sosnoviy blvd 6, Kemerovo 650002</p></bio><email xlink:type="simple">asmaks988@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1491-0799</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Казачек</surname><given-names>Я. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kazachek</surname><given-names>Ya. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, учёный секретарь</p><p>650002, г. Кемерово, Сосновый б-р, 6</p></bio><bio xml:lang="en"><p>Dr. Sc. (Med.), Scientific Secretary</p><p>Sosnoviy blvd 6, Kemerovo 650002</p></bio><email xlink:type="simple">kazachek@kemcardio.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8475-4667</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Евтушенко</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Evtushenko</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, заведующий лабораторией пороков сердца</p><p>650002, г. Кемерово, Сосновый б-р, 6</p></bio><bio xml:lang="en"><p>Dr. Sc. (Med.), Head of the Laboratory of Heart Diseases</p><p>Sosnoviy blvd 6, Kemerovo 650002</p></bio><email xlink:type="simple">AVE@kemcardio.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7549-8075</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Теплова</surname><given-names>Ю. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Teplova</surname><given-names>Yu. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>лаборант-исследователь лаборатории пороков сердца</p><p>650002, г. Кемерово, Сосновый б-р, 6</p></bio><bio xml:lang="en"><p>Laboratory Assistant at the Laboratory of Heart Diseases</p><p>Sosnoviy blvd 6, Kemerovo 650002</p></bio><email xlink:type="simple">teplovajulya@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3002-2863</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Понасенко</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ponasenko</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>заведующая лабораторией геномной медицины</p><p>650002, г. Кемерово, Сосновый б-р, 6</p></bio><bio xml:lang="en"><p>Head of the Laboratory of Genomic Medicine</p><p>Sosnoviy blvd 6, Kemerovo 650002</p></bio><email xlink:type="simple">avapanass@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний»</institution></aff><aff xml:lang="en"><institution>Research Institute for Complex Issues of Cardiovascular Diseases</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>22</day><month>05</month><year>2022</year></pub-date><volume>7</volume><issue>2</issue><fpage>91</fpage><lpage>98</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Асанов М.А., Казачек Я.В., Евтушенко А.В., Теплова Ю.Е., Понасенко А.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Асанов М.А., Казачек Я.В., Евтушенко А.В., Теплова Ю.Е., Понасенко А.В.</copyright-holder><copyright-holder xml:lang="en">Asanov M.A., Kazachek Y.V., Evtushenko A.V., Teplova Y.E., Ponasenko A.V.</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/3416">https://www.actabiomedica.ru/jour/article/view/3416</self-uri><abstract><sec><title>Обоснование</title><p>Обоснование. Инфекционный эндокардит (ИЭ) определяется как инфекция нативного или протезированного клапана сердца, поверхности эндокарда или постоянного аппарата для сердца. В настоящее время определение микроорганизмов, индуцирующих заболевание или вовлечённых в процесс патогенеза, методом ПЦР является одним из современных и быстрых тестов.</p></sec><sec><title>Цель исследования</title><p>Цель исследования: установить и сравнить спектр инфекционных возбудителей в образцах гомогената нативных клапанов сердца и крови пациентов с ИЭ.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Обследовано 20 пациентов с подтверждённым диагностированным ИЭ, поступивших на госпитализацию в ФГБНУ «НИИ комплексных проблем сердечно-сосудистых заболеваний» (г. Кемерово, Россия) в 2019 г. Спектр тестов, использованных в исследовании, был направлен на обнаружение таких микроорганизмов как Streptococcus pyogenes, Streptococcus agalacticae, Enterobacter spp., Klebsiella spp., Staphylococcus spp., Streptococcus spp., Bacteroides fragilis, Bacteroides vulgatus, Bacteroides thetaiotomicron и Bacteroides ovatus.</p></sec><sec><title>Результаты</title><p>Результаты. В проведённом исследовании установлено, что 19 образцов клапанов сердца характеризовались наличием микроорганизмов из рода Streptococcus spp., при этом Streptococcus agalacticae обнаружен у двух пациентов. Staphylococcus spp. обнаружен в 16 образцах гомогената клапана. При детекции других возбудителей выявлены только два случая Enterobacter spp. и Klebsiella spp. При анализе образцов крови пациентов с ИЭ не было выявлено ни одного инфекционного возбудителя. В проведённом исследовании было выявлено статистически значимое различие (p &lt; 0,001) между частотой встречаемости Staphylococcus spp. в образцах гомогената клапанов и периферической крови пациентов с ИЭ. Статистически значимое различие Streptococcus spp. (p &lt; 0,001) также было и в образцах гомогената клапанов, и в периферической крови пациентов с ИЭ.</p></sec><sec><title>Заключение</title><p>Заключение. Молекулярно-генетическое исследование с использованием технологий ПЦР имеет низкую эффективность в отношении обнаружения возбудителя в циркулирующем кровотоке, как и посев крови. Однако исследование гомогенизированных биоптатов клапанных структур сердца, удалённых во время операции, может позволить скорректировать антимикробную тактику в раннем послеоперационном периоде протезирования.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. Infective endocarditis (IE) is defined as an infection of a native or prosthetic heart valve, endocardial surface, or permanent cardiac apparatus. Currently, the determination of microorganisms that induce a disease or are involved in the process of pathogenesis by PCR is one of the most modern and rapid tests.</p></sec><sec><title>The aim</title><p>The aim. To determine and to compare the spectrum of infectious pathogens in homogenate samples of native heart valves and blood of patients with IE.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Twenty patients with confirmed IE diagnose were examined, admitted for hospitalization at the Research Institute for Complex Issues of Cardiovascular Diseases (Kemerovo, Russia) in 2019. The range of tests used in the study was aimed at detecting such microorganisms as Streptococcus pyogenes, Streptococcus agalactiae, Enterobacter spp., Klebsiella spp., Staphylococcus spp., Streptococcus spp., Bacteroides fragilis, Bacteroides vulgatus, Bacteroides thetaiotaomicron, and Bacteroides ovatus.</p></sec><sec><title>Results</title><p>Results. The study found that 19 samples of heart valves were characterized by the presence of microorganisms from the genus Streptococcus spp., wherein Streptococcus agalactiae was found in two patients. Staphylococcus spp. Were found in 16 samples of valve homogenate. Detection of other pathogens revealed only two cases of Enterobacter spp., Klebsiella spp. When analyzing blood samples from patients with IE, not a single infectious agent was identified. The study revealed a statistically significant difference (p &lt; 0.001) between the incidence of Staphylococcus spp. in samples of valve homogenate and peripheral blood of patients with IE. There was also a statistically significant difference (p &lt; 0.001) for Streptococcus spp. both in samples of valve homogenate and peripheral blood from patients with IE.</p></sec><sec><title>Conclusion</title><p>Conclusion. Molecular genetic research using PCR technologies has low efficiency in detecting the pathogen in the circulating bloodstream, as well as in blood culture. However, the study of homogenized biopsy specimens of the heart valve structures removed during surgery may allow correcting antimicrobial tactics in the early postoperative period of prosthetics.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>сердечно-сосудистые заболевания</kwd><kwd>инфекционный эндокардит</kwd><kwd>полимеразная цепная реакция</kwd><kwd>клапан сердца</kwd><kwd>микробиота</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cardiovascular diseases</kwd><kwd>infective endocarditis</kwd><kwd>bacterial microflora</kwd><kwd>polymerase chain reaction</kwd><kwd>heart valve</kwd><kwd>microbiota</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке комплексной программы фундаментальных научных исследований СО РАН в рамках фундаментальной темы НИИ  КПССЗ № 0419-2022-0001 «Молекулярные, клеточные и биохимические механизмы патогенеза сердечно-сосудистых заболеваний в разработке новых методов лечения заболеваний сердечно-сосудистой системы на основе персонифицированной фармакотерапии, внедрения малоинвазивных медицинских изделий, биоматериалов и тканеинженерных имплантатов».</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">Cahill TJ, Prendergast BD. Infective endocarditis. Lancet. 2016; 387(10021): 882-893. doi: 10.1016/S0140-6736(15)00067-7</mixed-citation><mixed-citation xml:lang="en">Cahill TJ, Prendergast BD. Infective endocarditis. Lancet. 2016; 387(10021): 882-893. doi: 10.1016/S0140-6736(15)00067-7</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Yang E, Frazee BW. Infective endocarditis. Emerg Med Clin North Am. 2018; 36(4): 645-663. doi: 10.1016/j.emc.2018.06.002</mixed-citation><mixed-citation xml:lang="en">Yang E, Frazee BW. Infective endocarditis. Emerg Med Clin North Am. 2018; 36(4): 645-663. doi: 10.1016/j.emc.2018.06.002</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Selton-Suty C, Célard M, Le Moing V, Doco-Lecompte T, Chirouze C, Iung B, et al. Preeminence of Staphylococcus aureus in infective endocarditis: A 1-year population-based survey. Clin Infect Dis. 2012; 54(9): 1230-1239. doi: 10.1093/cid/cis199</mixed-citation><mixed-citation xml:lang="en">Selton-Suty C, Célard M, Le Moing V, Doco-Lecompte T, Chirouze C, Iung B, et al. Preeminence of Staphylococcus aureus in infective endocarditis: A 1-year population-based survey. Clin Infect Dis. 2012; 54(9): 1230-1239. doi: 10.1093/cid/cis199</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Murdoch DR, Corey GR, Hoen B, Miró JM, Fowler VG Jr, Bayer AS, et al. Clinical presentation, etiology, and outcome of infective endocarditis in the 21st century: The International Collaboration on Endocarditis-Prospective Cohort Study. Arch Intern Med. 2009; 169(5): 463-473. doi: 10.1001/archinternmed.2008.603</mixed-citation><mixed-citation xml:lang="en">Murdoch DR, Corey GR, Hoen B, Miró JM, Fowler VG Jr, Bayer AS, et al. Clinical presentation, etiology, and outcome of infective endocarditis in the 21st century: The International Collaboration on Endocarditis-Prospective Cohort Study. Arch Intern Med. 2009; 169(5): 463-473. doi: 10.1001/archinternmed.2008.603</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Raoult D, Casalta JP, Richet H, Khan M, Bernit E, Rovery C, et al. Contribution of systematic serological testing in diagnosis of infective endocarditis. J Clin Microbiol. 2005; 43(10): 5238-5242. doi: 10.1128/JCM.43.10.5238-5242.2005</mixed-citation><mixed-citation xml:lang="en">Raoult D, Casalta JP, Richet H, Khan M, Bernit E, Rovery C, et al. Contribution of systematic serological testing in diagnosis of infective endocarditis. J Clin Microbiol. 2005; 43(10): 5238-5242. doi: 10.1128/JCM.43.10.5238-5242.2005</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Liesman RM, Pritt BS, Maleszewski JJ, Patel R. Laboratory diagnosis of infective endocarditis. J Clin Microbiol. 2017; 55(9): 2599-2608. doi: 10.1128/JCM.00635-17</mixed-citation><mixed-citation xml:lang="en">Liesman RM, Pritt BS, Maleszewski JJ, Patel R. Laboratory diagnosis of infective endocarditis. J Clin Microbiol. 2017; 55(9): 2599-2608. doi: 10.1128/JCM.00635-17</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Mylonakis E, Calderwood SB. Infective endocarditis in adults. N Engl J Med. 2001; 345(18): 1318-1330. doi: 10.1056/NEJMra010082</mixed-citation><mixed-citation xml:lang="en">Mylonakis E, Calderwood SB. Infective endocarditis in adults. N Engl J Med. 2001; 345(18): 1318-1330. doi: 10.1056/NEJMra010082</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Данилов А.И., Козлов Р.С., Козлов С.Н., Дехнич А.В. Практика ведения пациентов с инфекционным эндокардитом в Российской Федерации. Антибиотики и химиотерапия. 2017; 62(1-2): 30-34.</mixed-citation><mixed-citation xml:lang="en">Danilov AI, Kozlov RS, Kozlov SN, Dekhnich AV. The practice of managing the patients with infective endocarditis in the Russian Federation. Antibiotics and Chemotherapy. 2017; 62(1-2): 30-34. (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Данилов А.И., Козлов С.Н. Общие принципы антимикробной терапии инфекционного эндокардита. Клиническая фармакология и терапия. 2019; 28(2): 57-60. doi: 10.32756/0869-5490-2019-2-57-60</mixed-citation><mixed-citation xml:lang="en">Danilov AI, Kozlov SN. General principles of antimicrobial therapy for infective endocarditis. Clinical pharmacology and therapy. 2019; 28(2): 57-60. (In Russ.). doi: 10.32756/0869-5490-2019-2-57-60</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Роголевич В.В., Глушкова Т.В., Понасенко А.В., Овчаренко Е.А. Инфекционный эндокардит как причина развития дисфункции клапанов сердца. Кардиология. 2019; 59(3): 68-77. doi: 10.18087/cardio.2019.3.10245</mixed-citation><mixed-citation xml:lang="en">Rogolevich VV, Glushkova TV, Ponasenko AV, Ovcharenko EA. Infective endocarditis causing native and prosthetic heart valve dysfunction. Kardiologiia. 2019; 59(3): 68-77. (In Russ.) doi: 10.18087/cardio.2019.3.10245</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Синицкий М.Ю., Асанов М.А., Тхоренко Б.А., Одаренко Ю.Н., Понасенко А.В. Микрофлора периферической крови пациентов с инфекционным эндокардитом. Клиническая лабораторная диагностика. 2018; 63(10): 636-640. doi: 10.18821/0869-2084-2018-63-10-636-640</mixed-citation><mixed-citation xml:lang="en">Sinitsky MY, Asanov MA, Tkhorenko BA, Odarenko YN, Ponasenko AV. Microflora of peripheral blood obtained from patients with infective endocarditis. Klinicheskaya Laboratornaya Diagnostika (Russian Clinical Laboratory Diagnostics). 2018; 63(10): 636-640 (In Russ.). doi: 10.18821/0869-2084-2018-63-10-636-640</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Isoshima D, Yamashiro K, Matsunaga K, Shinobe M, Nakanishi N, Nakanishi I, et al. Assessment of pathogenesis of infective endocarditis by plasma IgG antibody titer test against periodontal bacteria. Clin Case Rep. 2017; 5(10): 1580-1586. doi: 10.1002/ccr3.1066</mixed-citation><mixed-citation xml:lang="en">Isoshima D, Yamashiro K, Matsunaga K, Shinobe M, Nakanishi N, Nakanishi I, et al. Assessment of pathogenesis of infective endocarditis by plasma IgG antibody titer test against periodontal bacteria. Clin Case Rep. 2017; 5(10): 1580-1586. doi: 10.1002/ccr3.1066</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Akuzawa N, Kurabayashi M. Native valve endocarditis due to Escherichia coli infection: A case report and review of the literature. BMC Cardiovasc Disord. 2018; 18(1): 195. doi: 10.1186/s12872-018-0929-7</mixed-citation><mixed-citation xml:lang="en">Akuzawa N, Kurabayashi M. Native valve endocarditis due to Escherichia coli infection: A case report and review of the literature. BMC Cardiovasc Disord. 2018; 18(1): 195. doi: 10.1186/s12872-018-0929-7</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Fournier PE, Gouriet F, Casalta JP, Lepidi H, Chaudet H, Thuny F, et al. Blood culture-negative endocarditis: Improving the diagnostic yield using new diagnostic tools. Medicine (Baltimore). 2017; 96(47): e8392. doi: 10.1097/MD.0000000000008392</mixed-citation><mixed-citation xml:lang="en">Fournier PE, Gouriet F, Casalta JP, Lepidi H, Chaudet H, Thuny F, et al. Blood culture-negative endocarditis: Improving the diagnostic yield using new diagnostic tools. Medicine (Baltimore). 2017; 96(47): e8392. doi: 10.1097/MD.0000000000008392</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Durack DT, Lukes AS, Bright DK. New criteria for diagnosis of infective endocarditis: Utilization of specific echocardiographic findings. Duke Endocarditis Service. Amer J Med. 1994; 96(3): 200-209. doi: 10.1016/0002-9343(94)90143-0</mixed-citation><mixed-citation xml:lang="en">Durack DT, Lukes AS, Bright DK. New criteria for diagnosis of infective endocarditis: Utilization of specific echocardiographic findings. Duke Endocarditis Service. Amer J Med. 1994; 96(3): 200-209. doi: 10.1016/0002-9343(94)90143-0</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Li JS, Sexton DJ, Mick N, Nettles R, Fowler VGJ, Ryan T, et al. Proposed modification to the Duke criteria for the diagnosis of infective endocarditis. Clin Infect Dis. 2000; 30(4): 633-638. doi: 10.1086/313753</mixed-citation><mixed-citation xml:lang="en">Li JS, Sexton DJ, Mick N, Nettles R, Fowler VGJ, Ryan T, et al. Proposed modification to the Duke criteria for the diagnosis of infective endocarditis. Clin Infect Dis. 2000; 30(4): 633-638. doi: 10.1086/313753</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Jang YR, Song JS, Ryu BH, Park SY, Lee SO, Choi SH, et al. Molecular detection of Coxiella burnetii in heart valve tissue from patients with culture-negative infective endocarditis. Medicine (Baltimore). 2018; 97(34): e11881. doi: 10.1097/MD.0000000000011881</mixed-citation><mixed-citation xml:lang="en">Jang YR, Song JS, Ryu BH, Park SY, Lee SO, Choi SH, et al. Molecular detection of Coxiella burnetii in heart valve tissue from patients with culture-negative infective endocarditis. Medicine (Baltimore). 2018; 97(34): e11881. doi: 10.1097/MD.0000000000011881</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Brouqui P, Raoult D. Endocarditis due to rare and fastidious bacteria. Clin Microbiol Rev. 2001; 14(1): 177-207. doi: 10.1128/CMR.14.1.177-207.2001</mixed-citation><mixed-citation xml:lang="en">Brouqui P, Raoult D. Endocarditis due to rare and fastidious bacteria. Clin Microbiol Rev. 2001; 14(1): 177-207. doi: 10.1128/CMR.14.1.177-207.2001</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Murphy DJ, Din M, Hage FG, Reyes E. Guidelines in review: Comparison of ESC and AHA guidance for the diagnosis and management of infective endocarditis in adults. J Nucl Cardiol. 2019; 26(1): 303-308. doi: 10.1007/s12350-018-1333-5</mixed-citation><mixed-citation xml:lang="en">Murphy DJ, Din M, Hage FG, Reyes E. Guidelines in review: Comparison of ESC and AHA guidance for the diagnosis and management of infective endocarditis in adults. J Nucl Cardiol. 2019; 26(1): 303-308. doi: 10.1007/s12350-018-1333-5</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Rantala S. Streptococcus dysgalactiae subsp. equisimilis bacteremia: An emerging infection. Eur J Clin Microbiol Infect Dis. 2014; 33(8): 1303-1310. doi: 10.1007/s10096-014-2092-0</mixed-citation><mixed-citation xml:lang="en">Rantala S. Streptococcus dysgalactiae subsp. equisimilis bacteremia: An emerging infection. Eur J Clin Microbiol Infect Dis. 2014; 33(8): 1303-1310. doi: 10.1007/s10096-014-2092-0</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Oppegaard O, Mylvaganam HSS, Jordal S, Glambek M, Kittang BR. Clinical and molecular characteristics of infective β-hemolytic streptococcal endocarditis. Diagn Microbiol Infect Dis. 2017; 89(2): 135-142. doi: 10.1016/j.diagmicrobio.2017.06.015</mixed-citation><mixed-citation xml:lang="en">Oppegaard O, Mylvaganam HSS, Jordal S, Glambek M, Kittang BR. Clinical and molecular characteristics of infective β-hemolytic streptococcal endocarditis. Diagn Microbiol Infect Dis. 2017; 89(2): 135-142. doi: 10.1016/j.diagmicrobio.2017.06.015</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Lang S, Watkin RW, Lambert PA, Bonser RS, Littler WA, Elliott TSJ. Evaluation of PCR in the molecular diagnosis of endocarditis. J Infect. 2004; 48(3): 269-275. doi: 10.1016/S0163-4453(03)00102-6</mixed-citation><mixed-citation xml:lang="en">Lang S, Watkin RW, Lambert PA, Bonser RS, Littler WA, Elliott TSJ. Evaluation of PCR in the molecular diagnosis of endocarditis. J Infect. 2004; 48(3): 269-275. doi: 10.1016/S0163-4453(03)00102-6</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Morel AS, Dubourg G, Prudent E, Edouard S, Gouriet F, Casalta JP, et al. Complementarity between targeted real-time specific PCR and conventional broad-range 16S rDNA PCR in the syndromedriven diagnosis of infectious diseases. Eur J Clin Microbiol Infect Dis. 2015; 34(3): 561-570. doi: 10.1007/s10096-014-2263-z</mixed-citation><mixed-citation xml:lang="en">Morel AS, Dubourg G, Prudent E, Edouard S, Gouriet F, Casalta JP, et al. Complementarity between targeted real-time specific PCR and conventional broad-range 16S rDNA PCR in the syndromedriven diagnosis of infectious diseases. Eur J Clin Microbiol Infect Dis. 2015; 34(3): 561-570. doi: 10.1007/s10096-014-2263-z</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
