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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">arthyper</journal-id><journal-title-group><journal-title xml:lang="ru">Артериальная гипертензия</journal-title><trans-title-group xml:lang="en"><trans-title>"Arterial’naya Gipertenziya" ("Arterial Hypertension")</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1607-419X</issn><issn pub-type="epub">2411-8524</issn><publisher><publisher-name>Antihypertensive League</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18705/1607-419X-2011-17-4-391-396</article-id><article-id custom-type="elpub" pub-id-type="custom">arthyper-1643</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>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Digifab и иммунонейтрализация кардиотонических стероидов при преэклампсии</article-title><trans-title-group xml:lang="en"><trans-title>Digifab and immunoneutralization of cardiotonic steroids in preeclampsia</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Яковлева</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakovleva</surname><given-names>V. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Солодовникова</surname><given-names>Н. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Solodovnikova</surname><given-names>N. G.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Фролова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Frolova</surname><given-names>E. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Адэр</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Adair</surname><given-names>C. D.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федорова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedorova</surname><given-names>O. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зазерская</surname><given-names>И. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Zazerskaya</surname><given-names>I. E.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Емельянов</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Emelyanov</surname><given-names>I. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Багров</surname><given-names>А. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Bagrov</surname><given-names>A. Y.</given-names></name></name-alternatives><email xlink:type="simple">BagrovA@mail.nih.gov</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт перинатологии и педиатрии ФГБУ «Федеральный Центр сердца, крови и эндокринологии им. В.А. Алмазова» Минздравсоцразвития РФ, Санкт-Петербург</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Neonatology, Almazov Heart, Blood and Endocrinology Center, St Petersburg</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт эволюционной физиологии и биохимии им. И.М. Сеченова РАН, Санкт-Петербург, Россия</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Sechenov Institute of Evolutionary Physiology and Biochemistry, St Peterburg</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Отдел акушерства и гинекологии, университет штата Теннесси, Чаттануга,  Теннесси, США</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Department of Obstetrics and Gynecology, University of Tennessee, Chattanooga, TN, USA</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Национальный институт старения, Национальные институты здоровья,
Балтимор, Мериленд, США</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Institute on Aging, NIH, Baltimore, MD, USA</institution><country>Russian Federation</country></aff></aff-alternatives><aff xml:lang="en" id="aff-5"><institution>Institute of Neonatology, Almazov Heart, Blood and Endocrinology Center, St Petersburg</institution><country>Russian Federation</country></aff><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>ФГБУ «Федеральный Центр сердца, крови и эндокринологии им. В.А. Алмазова» Минздравсоцразвития РФ, Санкт-Петербург</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Almazov Heart, Blood and Endocrinology Center, St Petersburg</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2011</year></pub-date><pub-date pub-type="epub"><day>28</day><month>08</month><year>2011</year></pub-date><volume>17</volume><issue>4</issue><fpage>391</fpage><lpage>396</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Яковлева В.В., Солодовникова Н.Г., Фролова Е.В., Адэр Д.С., Федорова О.В., Зазерская И.Е., Емельянов И.В., Багров А.Я., 2011</copyright-statement><copyright-year>2011</copyright-year><copyright-holder xml:lang="ru">Яковлева В.В., Солодовникова Н.Г., Фролова Е.В., Адэр Д.С., Федорова О.В., Зазерская И.Е., Емельянов И.В., Багров А.Я.</copyright-holder><copyright-holder xml:lang="en">Yakovleva V.V., Solodovnikova N.G., Frolova E.V., Adair C.D., Fedorova O.V., Zazerskaya I.E., Emelyanov I.V., Bagrov A.Y.</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://htn.almazovcentre.ru/jour/article/view/1643">https://htn.almazovcentre.ru/jour/article/view/1643</self-uri><abstract><p>Актуальность. Повышение концентрации дигиталис-подобных ингибиторов Na+/K+-АТФазы (NKA) - кардиотонических стероидов (КТС), в том числе маринобуфагенина (МБГ) играет большую роль в патогенезе преэклампсии (ПЭ), вызывая устойчивую вазоконстрикцию. При ПЭ успешно применяется Digibind (фаб-фрагменты аффинно-очищенных поликлональных антител к дигоксину), который нейтрализует кардиотонические стероиды, в том числе МБГ. В связи с тем, что Digibind в настоящее время недоступен и единственным используемым в клинике антителом к дигоксину является DigiFab (BTG International Ltd), мы сравнивали  DigiFab и Digibind по способности взаимодействовать с  КТС в плазме крови при ПЭ, а также восстанавливать активность NKА in vitro. Цель исследования. Мы сравнивали влияние Digibind и Digifab на NKА эритроцитов у пациентов с ПЭ и 6 беременных с нормальным артериальным давлением. Используя конкурентный иммунофлуорометрический метод, мы сравнивали взаимодействие обоих антител с фракциями, полученными методом высокоэффективной жидкостной хроматографии (ВЭЖХ) плазмы крови больных ПЭ. Материалы и методы. Было обследовано 7 пациенток с ПЭ (28 ± 2 лет; срок беременности 39,0 ± 0,5 недель, экскреция белка с мочой 2,12 ± 0,46 г/сут, артериальное давление 157 ± 5/94 ± 2 мм рт. ст.)  и 9 пациенток контрольной группы (26 ± 1 лет; срок беременности 37 ± 1 недель, артериальное давление 112 ± 2/75 ± 3 мм рт. ст.). Результаты. При ПЭ наблюдалось значимое подавление NКА эритроцитов (1,47 ± 0,17 по отношению к 2,65 ± 0,16 мкмолФн/мл/час в контрольной группе, p &lt; 0,001). При концентрации 10 мк/мл (что соответствует дозе Digibind, назначаемой при ПЭ) как Digibind, так и DigiFab частично, но значимо восстанавливали активность фермента (2,1 ± 0,2 и 2,05 ± 0,3 мкмолФн/мл/час соответственно). При использовании конкурентного иммунофлуорометрического анализа, Digibind и Digifab демонстрировали сравнимую кросс-реактивность с  МБГ и оубаином. При дальнейшей хроматографии плазмы как Digibind, так и Digifab демонстрировали ассоциированное с ПЭ повышение концентрации во фракциях 16-18; 176 против 75 пмоль для Digibind в контрольной группе и при ПЭ соответственно; 221 против 70 пмоль для Digifab в контрольной группе и при ПЭ соответственно. 4G4 анти-МБГ моноклональное антитело выявляло вызванное ПЭ повышение КТС (1056 против 421 пмоль), максимум во фракции 16.	Выводы. (1) Digifab и Digibind имеют сравнимую кросс-реактивность с КТС; (2) у пациенток с ПЭ увеличение содержания дигоксин-подобной иммунореактивности происходило пропорционально для Digifab и Digibind, и оба антитела вызывали восстановления активности NKА; (3) при жидкостной хроматографии плазмы пациенток с ПЭ, и Digifab и Digibind взаимодействовали с эндогенными буфадиенолидами, в том числе МБГ, в большей степени, чем с эндогенным оубаином.</p></abstract><trans-abstract xml:lang="en"><p>Background. Elevated levels of Na+/K+-ATPase(NKA)-inhibitory cardiotonic steroids (CTS) including marinobufagenin (MBG) contribute to pathogenesis of preeclampsia (PE) via induction of vasoconstriction and of vascular stiffness. In PE, Digibind (affinity-purified digoxin antibody) exhibits beneficial effects primarily due to immunoneutralization of CTS including MBG. Because Digibind is not available and the only other «clinically-usable» digoxin antibody is DigiFab (BTG International Ltd), we compared DigiFab and Digibind with respect to their ability to interact with CTS in PE plasma and to ex-vivo reverse PE-induced NKA inhibition. Objective.	We compared effects of Digibind and Digifab on erythrocyte NKA from patients with PE and normotensive pregnant subjects. Using competitive fluoroimmunoassays based on Eu-labeled DigiFab and Digibind we compared profile of elution digoxin-immunoreactive material following fractionation of PE plasma on reverse-phase HPLC column. Design and methods. 7 patients with PE (28 ± 2 years; gestational age, 39,0 ± 0,5 weeks, urinary protein excretion, 2,12 ± 0,46 g/24 hours, blood pressure 157 ± 5/94 ± 2 mm Hg) and 9 normotensive pregnant subjects (26 ± 1 years; gestational age, 37 ± 1 weeks, blood pressure 112 ± 2/75 ± 3) were studied. Results. PE was associated with substantial inhibition of erythrocyte NKA (1,47 ± 0,17 vs. 2,65 ± 0,16 umol Pi/mL/hr in control group, p &lt; 0,001). At concentration 10 ug/mL (which mimics dose of Digibind administered in PE) both Digibind and DigiFab partially, but significantly restored NKA activity (2,1 ± 0,2 and 2,05 ± 0,3 umol pI/mL/hr, respectively). In competitive immunoassay Digibind and Digifab exhibited comparable cross-reactivity with MBG and endogenous ouabain. Following HPLC fractionation of plasma, both Digibind and Digifab detected PE-associated increase in CTS material in fractions 16-18; 176 vs. 75 pmoles for Digibind, control and preeclampsia, respectively; 221 vs. 70 pmoles for Digifab, control and PE, respectively. 4G4 anti-MBG monoclonal antibody detected preeclampsia-induced CTS increase (1056 vs. 421 pmoles) mainly in fraction 16. Conclusions. We conclude that: (i) Digifab and Digibind exhibit comparable cross-immunoreactivity with CTS; (ii) in patients with PE plasma levels of digoxin-like immunoreactivity are elevated proportionally when measured by both Digifab and Digibind and both antibodies reverse preeclampsia-induced NKA inhibition, and (iii) following HPLC fractionation of PE plasma, Digifab and Digibind interact with endogenous bufadienolides including MBG, rather than endogenous ouabain.</p></trans-abstract></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">MacKay A.P., Berg C.J., Atrash H.K. Pregnancy-related mortality from preeclampsia and eclampsia // Obstet. Gynecol. - 2001. - Vol. 97, № 4. - P. 533-538.</mixed-citation><mixed-citation xml:lang="en">MacKay A.P., Berg C.J., Atrash H.K. Pregnancy-related mortality from preeclampsia and eclampsia // Obstet. 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