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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" article-type="research-article" dtd-version="1.1d1" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher">Medical Scientific Bulletin of Central Chernozemye (Naučno-medicinskij vestnik Centralʹnogo Černozemʹâ)</journal-id><journal-title-group><journal-title>Medical Scientific Bulletin of Central Chernozemye (Naučno-medicinskij vestnik Centralʹnogo Černozemʹâ)</journal-title></journal-title-group><issn publication-format="electronic">1990-472X</issn><publisher><publisher-name>Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный медицинский университет имени Н.Н. Бурденко" Министерства здравоохранения Российской Федерации</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">7843</article-id><article-id pub-id-type="doi">10.18499/1990-472X-2022-0-88-103-106</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>ETHNIC FEATURES OF CYTOCHROME P 450 POLYMORPHISM IN RESIDENTS OF THE VORONEZH REGION</article-title></title-group><contrib-group><contrib contrib-type="author"><name name-style="western"><surname>Dubrovsky</surname><given-names>A. A</given-names></name><bio></bio><email>-</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Batishcheva</surname><given-names>G. A</given-names></name><bio></bio><email>-</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Goncharova</surname><given-names>N. Yu</given-names></name><bio></bio><email>-</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Chernova</surname><given-names>M. S</given-names></name><bio></bio><email>-</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff id="aff-1">Voronezh State Medical University</aff><pub-date date-type="epub" iso-8601-date="2022-09-28" publication-format="electronic"><day>28</day><month>09</month><year>2022</year></pub-date><issue>88</issue><fpage>103</fpage><lpage>106</lpage><history><pub-date date-type="received" iso-8601-date="2022-09-27"><day>27</day><month>09</month><year>2022</year></pub-date></history><permissions><copyright-statement>Copyright © 2022, Medical Scientific Bulletin of Central Chernozemye (Naučno-medicinskij vestnik Centralʹnogo Černozemʹâ)</copyright-statement><copyright-year>2022</copyright-year></permissions><abstract>The paper analyzes the frequency of polymorphism of enzymes of the cytochrome P 450 (CYP) family in regional conditions in residents of the Voronezh region. As a result of studies performed in 2021 in 69 residents of the Voronezh region during genetic testing of CYP 2C19 isoenzymes, the frequency of occurrence of "slow" metabolizers (15.8% of patients), "fast" metabolizers (2.8% of patients) was established. To assess the relationship between the phenotype and genotype of patients, a Born aggregogram was performed, which reflects the functional activity of platelets. The aggregation ability (aggregation ≥ 40%) of platelets was observed in patients who had a decrease in the metabolic rate of CYP 2C19.</abstract><kwd-group xml:lang="en"><kwd>personalized therapy</kwd><kwd>polymorphism of cytochrome P 450 enzymes</kwd><kwd>CYP 2C19 genotype</kwd><kwd>aggregogram</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>персонализированная терапия</kwd><kwd>полиморфизм ферментов цитохрома Р 450</kwd><kwd>генотип CYР 2C19</kwd><kwd>агрегатограмма</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Батурин В.А., Царукян А.А., Колодийчук Е.В. Исследование полиморфизма гена CYP 2С9 в этнических группах населения Ставропольского края // Медицинский вестник Северного Кавказа. - 2014. - № 1 (9). - С. 45-48 @@Baturin V.A., Tsarukyan A.A., Kolodiychuk E.V. 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