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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">Almanac of Clinical Medicine</journal-id><journal-title-group><journal-title xml:lang="en">Almanac of Clinical Medicine</journal-title><trans-title-group xml:lang="ru"><trans-title>Альманах клинической медицины</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2072-0505</issn><issn publication-format="electronic">2587-9294</issn><publisher><publisher-name xml:lang="en">Moscow Regional Research and Clinical Institute (MONIKI)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">308</article-id><article-id pub-id-type="doi">10.18786/2072-0505-2016-44-1-58-63</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>DERMATO-ONCOLOGY</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ДЕРМАТООНКОЛОГИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">CHARACTERISTICS OF PROLIFERATION AND INTERCELLULAR ADHESION IN PRE-CANCEROUS AND MALIGNANT EPITHELIAL SKIN TUMORS</article-title><trans-title-group xml:lang="ru"><trans-title>ОСОБЕННОСТИ ПРОЛИФЕРАЦИИ И МЕЖКЛЕТОЧНОЙ АДГЕЗИИ В ПРЕДРАКОВЫХ И ЗЛОКАЧЕСТВЕННЫХ ЭПИТЕЛИАЛЬНЫХ ОПУХОЛЯХ КОЖИ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Khlebnikova</surname><given-names>A. N.</given-names></name><name xml:lang="ru"><surname>Хлебникова</surname><given-names>А. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Professor, Chair of Skin and Venereal Diseases, Institute for Professional Education</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, профессор кафедры кожных и венерических болезней Института профессионального образования</p></bio><email>alb9696@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gurevich</surname><given-names>L. E.</given-names></name><name xml:lang="ru"><surname>Гуревич</surname><given-names>Л. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Leading Research Fellow, Department of Pathological Anatomy</p></bio><bio xml:lang="ru"><p>д-р мед. наук, вед. науч. сотр. патологоанатомического отделения</p></bio><email>alb9696@yandex.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Selezneva</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Селезнева</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Assistant, Chair of Skin and Venereal Diseases, Institute for Professional Education</p></bio><bio xml:lang="ru"><p>канд. мед. наук, ассистент кафедры кожных и венерических болезней Института профессионального образования</p></bio><email>alb9696@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Obydenova</surname><given-names>K. V.</given-names></name><name xml:lang="ru"><surname>Обыденова</surname><given-names>К. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD Student, Chair of Dermatovenereology and Dermato-Oncology, Postgraduate Training Faculty</p></bio><bio xml:lang="ru"><p>аспирант кафедры дерматовенерологии и дерматоонкологии факультета усовершенствования врачей</p></bio><email>alb9696@yandex.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sedova</surname><given-names>T. G.</given-names></name><name xml:lang="ru"><surname>Седова</surname><given-names>Т. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Associate Professor, Chair of Dermatology and Venereology</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент кафедры дерматовенерологии</p></bio><email>alb9696@yandex.ru</email><xref ref-type="aff" rid="aff5"/><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kuntsevich</surname><given-names>Zh. S.</given-names></name><name xml:lang="ru"><surname>Кунцевич</surname><given-names>Ж. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Associate Professor, Chair of Dermatovenereology and Dermato-Oncology, Postgraduate Training Faculty</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент кафедры дерматовенерологии и дерматоонкологии факультета усовершенствования врачей</p></bio><email>alb9696@yandex.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">I.M. Sechenov First Moscow State Medical University</institution></aff><aff><institution xml:lang="ru">ГБОУ ВПО «Первый Московский государственный медицинский университет им. И.М. Сеченова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">8/2 Trubetskaya ul., Moscow, 119991, Russian Federation</institution></aff><aff><institution xml:lang="ru">119991, г. Москва, ул. Трубецкая, 8/2, Российская Федерация</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Moscow Regional Research and Clinical Institute (MONIKI)</institution></aff><aff><institution xml:lang="ru">ГБУЗ МО «Московский областной научно-исследовательский клинический институт им. М.Ф. Владимирского»</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">61/2 Shchepkina ul., Moscow, 129110, Russian Federation</institution></aff><aff><institution xml:lang="ru">129110, г. Москва, ул. Щепкина, 61/2, Российская Федерация</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Perm State Medical Academy named after academician E.A.Vagner</institution></aff><aff><institution xml:lang="ru">ГБОУ ВПО «Пермский государственный медицинский университет имени академика Е.А. Вагнера» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">26 Petropavlovskaya ul., Perm, 614990, Russian Federation</institution></aff><aff><institution xml:lang="ru">614990, г. Пермь, ул. Петропавловская, 26, Российская Федерация</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2016-01-15" publication-format="electronic"><day>15</day><month>01</month><year>2016</year></pub-date><volume>44</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>58</fpage><lpage>63</lpage><history><date date-type="received" iso-8601-date="2016-06-24"><day>24</day><month>06</month><year>2016</year></date><date date-type="accepted" iso-8601-date="2016-06-24"><day>24</day><month>06</month><year>2016</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2016, Khlebnikova A.N., Gurevich L.E., Selezneva E.V., Obydenova K.V., Sedova T.G., Kuntsevich Z.S.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2016, Хлебникова А.Н., Гуревич Л.Е., Селезнева Е.В., Обыденова К.В., Седова Т.Г., Кунцевич Ж.С.</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="en">Khlebnikova A.N., Gurevich L.E., Selezneva E.V., Obydenova K.V., Sedova T.G., Kuntsevich Z.S.</copyright-holder><copyright-holder xml:lang="ru">Хлебникова А.Н., Гуревич Л.Е., Селезнева Е.В., Обыденова К.В., Седова Т.Г., Кунцевич Ж.С.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://almclinmed.ru/jour/article/view/308">https://almclinmed.ru/jour/article/view/308</self-uri><abstract xml:lang="en"><p>Background: Diﬀerential diagnostics between actinic keratosis which is one of pre-cancerous skin diseases, and intra-epidermal squamous cell skin cancer (or Bowen's disease) could be difficult in some cases even with morphological examination. The study on molecular characteristics of pre-cancerous skin disorders would allow for more accurate diagnostics and assessment of prognosis. Aim: To study proliferative activity of keratinocytes and E-cadherin expression on cell membranes in actinic keratosis and in Bowen's disease, with identiﬁcation of diﬀerential diagnostic criteria. Materials and methods: We performed an immunohistochemistry study with anti-Ki-67 and anti-Е-cadherin monoclonal antibodies in skin bioptates of 23 patients with actinic keratosis and 10 patients with Bowen's disease. Results: The mean proliferation index in actinic keratosis without the bowen-like loci was 30.9 ± 11.4% (range, from 11.5 to 48.4%), and in actinic keratosis with the bowen-like loci, 40.3 ± 8.6% (range, from 31 to 57.6%). In both groups, E-cadherin expression in all cases (100%) was located in cell membranes. The mean proliferation index in Bowen's disease was 44.7 ± 8.2% (range, from 33.3 to 60%). In 48.2% of Bowen cells, abnormal type of E-cadherin expression (reduced membranous, membranous and cytoplasmatic and cytoplasmatic only). Conclusion: Actinic keratosis and Bowen's disease represent diﬀerent stages of one and the same malignant process that have diﬀerent proliferative cell activity and E-cadherin expression, which could be used as diﬀerential diagnostic markers.</p></abstract><trans-abstract xml:lang="ru"><p>Актуальность. Дифференциальная диагностика актинического кератоза, относящегося к  предраковым заболеваниям кожи, и  внутриэпидермального плоскоклеточного рака кожи, или болезни Боуэна, представляет в  ряде случаев определенные трудности даже при проведении морфологического исследования. Изучение молекулярных особенностей предраковых состояний кожи позволит проводить более точную диагностику и  оценку прогноза заболевания. Цель  – изучение пролиферативной активности кератиноцитов и  экспрессии Е-кадгерина на мембранах клеток при актиническом кератозе и  болезни Боуэна, определение дифференциально-диагностических критериев. Материал и  методы. Проведено иммуногистохимическое исследование с моноклональными антителами к Ki-67 и Е-кадгерину биопсийного материала пораженной кожи 23  больных актиническим кератозом и  10  пациентов с  болезнью Боуэна. Результаты. При актиническом кератозе без очагов боуэнизации средний индекс пролиферации составил 30,9 ± 11,4% (от 11,5 до 48,4%); при актиническом кератозе с  очагами боуэнизации  – 40,3 ± 8,6% (от 31 до 57,6%). При этом в обеих подгруппах экспрессия Е-кадгерина во всех случаях (100%) носила мембранный характер. При болезни Боуэна средний индекс пролиферации составил 44,7 ± 8,2% (от 33,3 до 60%). В 48,2% клеток болезни Боуэна отмечали аномальные типы экспрессии Е-кадгерина (мембранно-редуцированный, мембранно-цитоплазматический, цитоплазматический). Заключение. Актинический кератоз и болезнь Боуэна представляют собой разные стадии развития одного и того же злокачественного процесса, отличающиеся по пролиферативной активности клеток и экспрессии Е-кадгерина, которые можно использовать в  качестве дифференциально-диагностических маркеров.</p></trans-abstract><kwd-group xml:lang="en"><kwd>actinic keratosis</kwd><kwd>Bowen's disease</kwd><kwd>proliferative protein</kwd><kwd>Ki-67</kwd><kwd>adhesion molecules</kwd><kwd>E-cadherin</kwd><kwd>diagnosis diﬀerential</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>актинический кератоз</kwd><kwd>болезнь Боуэна</kwd><kwd>белок пролиферации</kwd><kwd>Ki-67</kwd><kwd>адгезивные молекулы</kwd><kwd>Е-кадгерин</kwd><kwd>дифференциальная диагностика</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>1. Marks R. The epidemiology of non-melanoma skin cancer: who, why and what can we do about it. 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