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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">Russian Journal of Biotherapy</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Biotherapy</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский биотерапевтический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-9784</issn><issn publication-format="electronic">1726-9792</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1452</article-id><article-id pub-id-type="doi">10.17650/1726-9784-2024-23-2-69-77</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL REPORTS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Study of the risks of radiation induced reactions in patients receiving irradiation of the pelvic organs</article-title><trans-title-group xml:lang="ru"><trans-title>Исследование рисков возникновения лучевых реакций у пациентов, получающих облучение органов малого таза</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7472-9676</contrib-id><name-alternatives><name xml:lang="en"><surname>Korytov</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Корытов</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Oleg V. Korytov</p><p>70 Leningradskaya St., Pesochny settlement, Saint Petersburg 197758</p></bio><bio xml:lang="ru"><p>Олег Витальевич Корытов </p><p>197758 Санкт-Петербург, пос. Песочный, ул. Ленинградская, 70</p></bio><email>olegkorytov@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0182-4856</contrib-id><name-alternatives><name xml:lang="en"><surname>Korytova</surname><given-names>L. I.</given-names></name><name xml:lang="ru"><surname>Корытова</surname><given-names>Л. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Luiza I. Korytova</p><p>70 Leningradskaya St., Pesochny settlement, Saint Petersburg 197758</p></bio><bio xml:lang="ru"><p>197758 Санкт-Петербург, пос. Песочный, ул. Ленинградская, 70</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1095-1216</contrib-id><name-alternatives><name xml:lang="en"><surname>Grigorjev</surname><given-names>S. G.</given-names></name><name xml:lang="ru"><surname>Григорьев</surname><given-names>С. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Stepan G. Grigorjev</p><p>6 Academician Lebedev St., Saint Petersburg 194044</p></bio><bio xml:lang="ru"><p>194044 Санкт-Петербург, ул. Академика Лебедева, 6</p></bio><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">A.M. Granov Russian Research Center for Radiology and Surgical Technologies, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Российский научный центр радиологии и хирургических технологий им. акад. А. М. Гранова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Kirov Military Medical Academy, Ministry of Defense of Russia</institution></aff><aff><institution xml:lang="ru">ФГБВОУ ВО «Военно-медицинская академия им. С. М. Кирова» Минобороны России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-06-26" publication-format="electronic"><day>26</day><month>06</month><year>2024</year></pub-date><volume>23</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>69</fpage><lpage>77</lpage><history><date date-type="received" iso-8601-date="2024-06-26"><day>26</day><month>06</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-06-26"><day>26</day><month>06</month><year>2024</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://bioterapevt.abvpress.ru/jour/article/view/1452">https://bioterapevt.abvpress.ru/jour/article/view/1452</self-uri><abstract xml:lang="en"><p><bold>Background.</bold> The oncological incidence in the world and the Russian Federation of rectal cancer (RC), prostate cancer (PC) and cervical cancer (CC) over the past 10–15 years remains high, with overall incidence of the pelvic organs cancer up to 25 % of the total. Radiation therapy is included in the complex of therapeutic measures in 50–70 % of cancer patients. The main feature of radiation therapy of patients with malignant neoplasms is the effect on both tumor and healthy cells of surrounding tissues. The development of radiation damage to healthy tissues, expressed in radiation reactions (RR) and complications lead to a deterioration in the quality of life. Unfortunately, it is currently not possible to predict which of the patients will develop radiation injuries above grade 1 and at what time.</p><p><bold>Aim.</bold> To assess the risks of RR in patients with diagnoses of RC, prostate cancer and cervical cancer who underwent radiation therapy.</p><p><bold>Materials and methods.</bold> The study included 759 patients, including 387 CC, 175 PC, and 197 RC, who received radiation therapy from 2011 to 2019 in the medical institutions of St. Petersburg and the Leningrad region.</p><p><bold>Results.</bold> More than 30 factors that characterized patients, tumor features and concomitant therapy options were studied. Twelve of them turned out to be significant. In order to establish the main determinants (factors) associated with the risk of radiation reactions, a discriminant analysis was carried out. A formula has been created to calculate the probability of developing RR. We conducted an additional study on changing the timing of the introduction of hydrogel compositions, in which a decrease in the frequency of radiation-induced cystitis was noted.</p><p><bold>Conclusion.</bold> Discriminant analysis revealed predictors of RR in patients with RC, CC, and PC out of 30 factors studied. From the results of discriminant analysis, formulas for predicting the probability of developing acute RR in patients with diagnoses of RC, CC, and PC who received radiation therapy were derived. The change in the time of administration of hydrogel compositions before, during and after the end of radiation therapy contributed to a decrease in the occurrence of radiation-induced cystitis compared with the control (<italic>р</italic> &lt;0.05).</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> Онкологическая заболеваемость раком прямой кишки (РПК), раком предстательной железы (РПЖ) и раком шейки матки (РШМ) в последние 10–15 лет остается высокой. В России, как и во всем мире, поражение органов малого таза составляет до 25 % от общей заболеваемости. Лучевая терапия включается в комплекс лечебных мероприятий у 50–70 % онкологических больных. Основной особенностью лучевой терапии при злокачественных новообразованиях является воздействие как на опухолевые, так и на здоровые клетки окружающих тканей. Развитие лучевых повреждений здоровых тканей, выраженных в лучевых реакциях (ЛР) и поздних осложнениях, приводят к ухудшению качества жизни. К сожалению, прогнозировать у кого из пациентов разовьются лучевые повреждения выше I степени выраженности и на каких сроках в настоящее время не представляется возможным.</p><p><bold>Цель исследования</bold> – оценить риски возникновения ЛР у пациентов с диагнозами РПК, РШМ и РПЖ, получавших лучевую терапию на область малого таза.</p><p><bold>Материалы и методы.</bold> В исследование включены 759 пациентов, из них с РШМ – 387, с РПЖ – 175, с РПК – 197 человек, получавших лучевую терапию с 2011 по 2019 г. в лечебно-профилактических учреждениях Санкт-Петербурга и Ленинградской области.</p><p><bold>Результаты.</bold> Исследовано более 30 факторов, которые характеризовали пациентов, особенности опухоли и варианты сопутствующей терапии. Значимыми из них оказались 12. С целью установления основных детерминант (факторов), связанных с риском развития ЛР, проведен дискриминантный анализ. Создана формула для расчета вероятности развития ЛР. Нами проведено дополнительное исследование по изменению сроков введения гидрогелевых композиций, при которых отмечено сокращение частоты радиационно-индуцированных циститов.</p><p><bold>Заключение.</bold> Дискриминантный анализ выявил предикторы ЛР у пациентов с РПК, РШМ, РПЖ из 30 исследованных факторов. Из результатов дискриминантного анализа были выведены формулы предикции вероятности развития острых ЛР у пациентов с диагнозами РПК, РШМ и РПЖ, получавших лучевую терапию. Изменение времени назначения гидрогелевых композиций до лучевой терапии, в ее процессе и после окончания таковой способствовало снижению возникновения радиационно-индуцированных циститов по сравнению с группой контроля (<italic>р</italic> &lt;0,05).</p></trans-abstract><kwd-group xml:lang="en"><kwd>radiation therapy</kwd><kwd> pelvic organs</kwd><kwd> radiation induced reactions</kwd><kwd> discriminant analysis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>лучевая терапия</kwd><kwd> органы малого таза</kwd><kwd> лучевые реакции</kwd><kwd> дискриминантный анализ</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">The state of cancer care for the population of Russia in 2021. Ed. A.D. Kaprin, V.V. Starinskiy, A.O. Shahzadova. Moscow: P.A. 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