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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Ekologiya cheloveka (Human Ecology)</journal-id><journal-title-group><journal-title xml:lang="en">Ekologiya cheloveka (Human Ecology)</journal-title><trans-title-group xml:lang="ru"><trans-title>Экология человека</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1728-0869</issn><issn publication-format="electronic">2949-1444</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">676787</article-id><article-id pub-id-type="doi">10.17816/humeco676787</article-id><article-id pub-id-type="edn">FPVIGB</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL STUDY ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Pregnancy and Alcohol: Parameters of Endogenous Intoxication Depending on Blood Phosphatidylethanol Levels</article-title><trans-title-group xml:lang="ru"><trans-title>Беременность и алкоголь: параметры эндогенной интоксикации в зависимости от уровня фосфатидилэтанола в крови</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>妊娠与饮酒：血液中磷脂酰乙醇水平与内源性中毒参数的关系</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6512-1335</contrib-id><contrib-id contrib-id-type="spin">6606-0160</contrib-id><name-alternatives><name xml:lang="en"><surname>Semenova</surname><given-names>Natalya V.</given-names></name><name xml:lang="ru"><surname>Семёнова</surname><given-names>Наталья Викторовна</given-names></name><name xml:lang="zh"><surname>Semenova</surname><given-names>Natalya V.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Biology)</p></bio><bio xml:lang="ru"><p>д-р биол. наук</p></bio><bio xml:lang="zh"><p>Dr. Sci. (Biology)</p></bio><email>natkor_84@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-1207-3309</contrib-id><contrib-id contrib-id-type="spin">2734-2998</contrib-id><name-alternatives><name xml:lang="en"><surname>Novikova</surname><given-names>Elizaveta A.</given-names></name><name xml:lang="ru"><surname>Новикова</surname><given-names>Елизавета Анатольевна</given-names></name><name xml:lang="zh"><surname>Novikova</surname><given-names>Elizaveta A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>yelizaveta_novikova_2001@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1926-9694</contrib-id><contrib-id contrib-id-type="spin">1799-4973</contrib-id><name-alternatives><name xml:lang="en"><surname>Nikitina</surname><given-names>Olga A.</given-names></name><name xml:lang="ru"><surname>Никитина</surname><given-names>Ольга Андреевна</given-names></name><name xml:lang="zh"><surname>Nikitina</surname><given-names>Olga A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biology)</p></bio><bio xml:lang="ru"><p>канд. биол. наук</p></bio><bio xml:lang="zh"><p>Cand. Sci. (Biology)</p></bio><email>olga_tolpygina@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9544-2172</contrib-id><contrib-id contrib-id-type="spin">2584-6861</contrib-id><name-alternatives><name xml:lang="en"><surname>Marianian</surname><given-names>Anait Yu.</given-names></name><name xml:lang="ru"><surname>Марянян</surname><given-names>Анаит Юрьевна</given-names></name><name xml:lang="zh"><surname>Marianian</surname><given-names>Anait Yu.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><bio xml:lang="zh"><p>MD, Dr. Sci. (Medicine)</p></bio><email>anait_24@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7626-020X</contrib-id><contrib-id contrib-id-type="spin">3082-0796</contrib-id><name-alternatives><name xml:lang="en"><surname>Karacheva</surname><given-names>Anastasia N.</given-names></name><name xml:lang="ru"><surname>Карачева</surname><given-names>Анастасия Николаевна</given-names></name><name xml:lang="zh"><surname>Karacheva</surname><given-names>Anastasia N.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>kalkova_nastya@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2124-6328</contrib-id><contrib-id contrib-id-type="spin">1752-6695</contrib-id><name-alternatives><name xml:lang="en"><surname>Kolesnikov</surname><given-names>Sergey I.</given-names></name><name xml:lang="ru"><surname>Колесников</surname><given-names>Сергей Иванович</given-names></name><name xml:lang="zh"><surname>Kolesnikov</surname><given-names>Sergey I.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor, Academician of the Russian Academy of Sciences</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, академик РАН</p></bio><bio xml:lang="zh"><p>MD, Dr. Sci. (Medicine), Professor, Academician of the Russian Academy of Sciences</p></bio><email>iphr@sbamsr.irk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3704-830X</contrib-id><contrib-id contrib-id-type="spin">2039-3728</contrib-id><name-alternatives><name xml:lang="en"><surname>Bairova</surname><given-names>Tatyana A.</given-names></name><name xml:lang="ru"><surname>Баирова</surname><given-names>Татьяна Ананьевна</given-names></name><name xml:lang="zh"><surname>Bairova</surname><given-names>Tatyana A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><bio xml:lang="zh"><p>MD, Dr. Sci. (Medicine)</p></bio><email>tbairova38@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3678-7274</contrib-id><contrib-id contrib-id-type="spin">2004-1578</contrib-id><name-alternatives><name xml:lang="en"><surname>Belskikh</surname><given-names>Aleksey V.</given-names></name><name xml:lang="ru"><surname>Бельских</surname><given-names>Алексей Владимирович</given-names></name><name xml:lang="zh"><surname>Belskikh</surname><given-names>Aleksey V.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Chemistry)</p></bio><bio xml:lang="ru"><p>канд. хим. наук</p></bio><bio xml:lang="zh"><p>Cand. Sci. (Chemistry)</p></bio><email>alex590750@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6050-5287</contrib-id><contrib-id contrib-id-type="spin">7865-3241</contrib-id><name-alternatives><name xml:lang="en"><surname>Belyaeva</surname><given-names>Elena V.</given-names></name><name xml:lang="ru"><surname>Беляева</surname><given-names>Елена Владимировна</given-names></name><name xml:lang="zh"><surname>Belyaeva</surname><given-names>Elena V.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biology)</p></bio><bio xml:lang="ru"><p>канд. биол. наук</p></bio><bio xml:lang="zh"><p>Cand. Sci. (Biology)</p></bio><email>belyeva_irk@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5790-6282</contrib-id><contrib-id contrib-id-type="spin">3435-5028</contrib-id><name-alternatives><name xml:lang="en"><surname>Sambyalova</surname><given-names>Alexandra Yu.</given-names></name><name xml:lang="ru"><surname>Самбялова</surname><given-names>Александра Юрьевна</given-names></name><name xml:lang="zh"><surname>Sambyalova</surname><given-names>Alexandra Yu.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sambialova95@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0690-4636</contrib-id><contrib-id contrib-id-type="spin">3002-7757</contrib-id><name-alternatives><name xml:lang="en"><surname>Ershova</surname><given-names>Oksana A.</given-names></name><name xml:lang="ru"><surname>Ершова</surname><given-names>Оксана Александровна</given-names></name><name xml:lang="zh"><surname>Ershova</surname><given-names>Oksana A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biology)</p></bio><bio xml:lang="ru"><p>канд. биол. наук</p></bio><bio xml:lang="zh"><p>Cand. Sci. (Biology)</p></bio><email>oksana111088@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1740-228X</contrib-id><contrib-id contrib-id-type="spin">7622-3480</contrib-id><name-alternatives><name xml:lang="en"><surname>Protopopova</surname><given-names>Natalia V.</given-names></name><name xml:lang="ru"><surname>Протопопова</surname><given-names>Наталья Владимировна</given-names></name><name xml:lang="zh"><surname>Protopopova</surname><given-names>Natalia V.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор</p></bio><email>doc_protopopova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3354-2992</contrib-id><contrib-id contrib-id-type="spin">1584-0281</contrib-id><name-alternatives><name xml:lang="en"><surname>Kolesnikova</surname><given-names>Lubov I.</given-names></name><name xml:lang="ru"><surname>Колесникова</surname><given-names>Любовь Ильинична</given-names></name><name xml:lang="zh"><surname>Kolesnikova</surname><given-names>Lubov I.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor, Academician of the Russian Academy of Sciences</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, академик РАН</p></bio><bio xml:lang="zh"><p>MD, Dr. Sci. (Medicine), Professor, Academician of the Russian Academy of Sciences</p></bio><email>iphr@sbamsr.irk.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Scientific Сentre for Family Health and Human Reproduction Problems</institution></aff><aff><institution xml:lang="ru">Научный центр проблем здоровья семьи и репродукции человека</institution></aff><aff><institution xml:lang="zh">Scientific Сentre for Family Health and Human Reproduction Problems</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-08-12" publication-format="electronic"><day>12</day><month>08</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2025</year></pub-date><volume>32</volume><issue>7</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>494</fpage><lpage>503</lpage><history><date date-type="received" iso-8601-date="2025-03-03"><day>03</day><month>03</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-07-21"><day>21</day><month>07</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2025,</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</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-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://hum-ecol.ru/1728-0869/article/view/676787">https://hum-ecol.ru/1728-0869/article/view/676787</self-uri><abstract xml:lang="en"><p><bold><italic>BACKGROUND: </italic></bold>Endotoxicosis is a multifactorial pathophysiological process that can significantly affect the mother–placenta–fetus system during gestation. Alcohol consumption is a potential aggravating factor for maternal health, associated with biochemical disturbances both in the mother and the fetus, and may increase the risk of endotoxicosis.</p> <p><bold><italic>AIM:</italic></bold> The work aimed to assess endogenous intoxication in women at different stages of pregnancy by measuring the concentration of middle molecules in venous blood and its association with serum phosphatidylethanol (PEth) levels.</p> <p><bold><italic>METHODS: </italic></bold>Endogenous intoxication was evaluated by middle molecules levels in pregnant women (<italic>n</italic>=163). In accordance with PEth 16:0/18:1 concentrations, groups of women were identified according to alcohol consumption levels: group 1 with PEth ≤8 ng/mL (non-drinkers, control); group 2 with 8–45 ng/mL (drinking less than one dose); group 3 with ≥45 ng/mL (drinking more than one dose). Measurements were performed at 6–12, 18–22, 28–32, and 38–40 weeks of gestation. Plasma samples were used for analysis. Middle molecules were determined at λ=238, 254, 260, and 280 nm, followed by calculation of distribution coefficients (238/260, 238/280, 280/254).</p> <p><bold><italic>RESULTS: </italic></bold>Compared with controls, significant reductions in middle molecules levels (λ=238 nm) were observed in alcohol-consuming women at 28–32 weeks in both group 2 (<italic>p</italic>=0.013) and group 3 (<italic>p</italic>=0.003). Before delivery, middle molecules levels were lower in group 3 compared with controls (<italic>p</italic>=0.004). A significant decrease in middle molecules levels (λ=280 nm) was detected in group 3 compared with group 2 (<italic>p</italic>=0.017). In alcohol-consuming women, regardless of PEth 16:0/18:1 levels, significantly lower values of the peptide–nucleotide distribution coefficient 238/260 (<italic>p</italic>=0.007 and <italic>p</italic> &lt;0.001 in groups 2 and 3, respectively) and aromaticity coefficient 238/280 (<italic>p</italic>=0.002 and <italic>p</italic> &lt;0.001 in groups 2 and 3, respectively) were observed compared with controls at 28–32 weeks. Before delivery, decreases in these coefficients were noted only in group 2 (<italic>p</italic>=0.006 for 238/260; <italic>p</italic>=0.015 for 238/280). The 280/254 distribution coefficient was higher in alcohol-consuming women at 28–32 weeks compared with controls (<italic>p</italic>=0.003 and <italic>p</italic>=0.014 in groups 2 and 3, respectively).</p> <p><bold><italic>CONCLUSION: </italic></bold>The findings indicate reduced levels of specific fractions of middle-molecular toxins reflecting both anabolic and catabolic pools in alcohol-consuming women, which may be associated with serious metabolic disturbances in the mother–placenta–fetus system. Distribution coefficients proved to be sensitive markers for monitoring endogenous intoxication in pregnant women, suggesting a predominance of catabolic processes with accumulation of catabolic products and a possible increased risk of preterm delivery, regardless of alcohol dose.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold><italic> </italic>Эндотоксикоз — многогранный патофизиологический процесс, способный оказать большое влияние на систему «мать–плацента–плод» во время гестации. Злоупотребление спиртосодержащими продуктами — вероятный отягощающий фактор для здоровья беременных, который может сопровождаться биохимическими нарушениями как у матери, так и у плода, в том числе повышать риск развития эндотоксикоза.</p> <p><bold>Цель.</bold> Оценить эндогенную интоксикацию у женщин в разные сроки беременности по содержанию молекул средней массы в венозной крови и её зависимость от уровня сывороточного фосфатидилэтанола (PEth).</p> <p><bold>Материалы и методы.</bold> Оценивали уровень эндогенной интоксикации по содержанию молекул средней массы у беременных (<italic>n</italic>=163). В зависимости от концентрации PEth 16:0/18:1 были выделены группы женщин, употребляющих разные дозы алкоголя: 1-я группа — значение PEth ≤8 нг/мл (непьющие, контроль); 2-я группа — от 8 до 45 (пьющие менее одной дозы); 3-я группа — ≥45 (пьющие более одной дозы). Показатели 4 раза оценивали на сроках гестации 6–12, 18–22, 28–32, 38–40 недель. В качестве материала для исследования использовали плазму крови. Уровень молекул средней массы определяли при λ=238, 254, 260 и 280 нм с последующим расчётом коэффициентов распределения (238/260, 238/280, 280/254).</p> <p><bold>Результаты.</bold> По сравнению с контролем установлено достоверное снижение уровня молекул средней массы (λ=238 нм) у беременных, употребляющих алкоголь на сроке 28–32 недели как во 2-й (<italic>р</italic>=0,013), так и в 3-й (<italic>р</italic>=0,003) группе. Перед родами отмечается более низкий уровень молекул средней массы в 3-й группе по сравнению с контролем (<italic>р</italic>=0,004). Выявлено достоверное снижение уровня молекул средней массы (λ=280 нм) в 3-й группе беременных по сравнению со 2-й группой (<italic>р</italic>=0,017). У женщин, употребляющих алкоголь, независимо от уровня PEth 16:0/18:1, достоверно значимо более низкие значения пептидно-нуклеотидного коэффициента распределения 238/260 (<italic>р</italic>=0,007 и <italic>р</italic>&lt;0,001 во 2-й и 3-й группах соответственно) и коэффициента ароматичности 238/280 нм (<italic>р</italic>=0,002 и <italic>р</italic>&lt;0,001 во 2-й и 3-й группах соответственно) по сравнению с контрольной группой на 28–32-й неделе беременности. Перед родами снижение данных коэффициентов отмечено только во 2-й группе (<italic>р</italic>=0,006 для 238/260 и <italic>р</italic>=0,015 для 238/280). В группах пьющих женщин коэффициент распределения 280/254 нм был выше на сроке 28–32 недели по сравнению с контролем (<italic>р</italic>=0,003 и <italic>р</italic>=0,014 во 2-й и 3-й группах соответственно).</p> <p><bold>Заключение.</bold> Полученные результаты указывают на снижение содержания отдельных фракций среднемолекулярных токсинов, отображающих как анаболический, так и катаболический пулы, в группе женщин, употребляющих алкоголь, что может быть связано с развитием серьёзных метаболических нарушений в системе «мать–плацента–плод». Коэффициенты распределения оказались чувствительными маркерами для отслеживания уровня эндогенной интоксикации в группах беременных, свидетельствуя о превалировании катаболических процессов с накоплением продуктов катаболизма и возможном риске преждевременных родов при употреблении алкоголя независимо от дозы.</p></trans-abstract><trans-abstract xml:lang="zh"><p>论证。内源性中毒是一种多方面的病理生理过程，在妊娠期间可能对“母体–胎盘–胎儿”系统产生显著影响。饮酒是危害孕妇健康的潜在加重因素，可能伴随母体和胎儿的生化紊乱，并增加内源性中毒发生的风险。</p> <p>目的。目的：根据静脉血中中分子物质的含量，评估不同妊娠阶段女性的内源性中毒水平，并探讨其与血清磷脂酰乙醇（phosphatidylethanol, PEth）水平的关系。</p> <p>材料与方法。通过检测孕妇（n=163）静脉血中中分子物质的含量来评估内源性中毒水平。根据PEth 16:0/18:1浓度，将孕妇划分为饮酒剂量不同的三组：第1组为PEth ≤8 ng/mL （不饮酒，对照组），第2组为8–45 ng/mL（饮酒量少于1个剂量单位），第3组为≥45 ng/mL （饮酒量多于1个剂量单位）。在妊娠6–12、18–22、28–32和38–40周四个阶段，对中分子物质进行了四次评估。研究材料为血浆。在λ=238、254、260和280 nm下测定中分子物质的水平，随后计算分布系数（238/260、238/280、280/254）。</p> <p>结果。与对照组相比，孕28–32周时饮酒孕妇在第2组（p=0.013）和第3组（p=0.003）均表现为λ=238 nm中分子物质水平显著降低。临产前，第3组中分子物质水平低于对照组（p=0.004）。发现第3组孕妇的中分子物质水平（λ=280 nm）较第2组显著降低（p=0.017）。 在孕28–32周时，饮酒孕妇无论PEth 16:0/18:1水平高低，其肽–核苷酸分布系数238/260（第2组p=0.007，第3组p&lt;0.001）和芳香性分布系数238/280（第2组p=0.002，第3组p&lt;0.001）均较对照组显著降低。临产前，仅在第2组观察到这些系数的下降（238/260的p=0.006，238/280的p=0.015）。在饮酒组中，孕28–32周时280/254分布系数高于对照组（第2组p=0.003；第3组p=0.014）。</p> <p>结论。结果显示，饮酒孕妇中分子毒素的某些分馏成分反映合成代谢与分解代谢库，其含量降低，这可能与“母体–胎盘–胎儿”系统发生严重代谢紊乱有关。分布系数对内源性中毒水平的监测较为敏感，表明分解代谢过程占主导并导致分解产物积累，而饮酒无论剂量大小均可能增加早产风险。</p></trans-abstract><kwd-group xml:lang="en"><kwd>endogenous intoxication</kwd><kwd>middle molecules</kwd><kwd>phosphatidylethanol</kwd><kwd>pregnancy at different stages</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>эндогенная интоксикация</kwd><kwd>молекулы средней массы</kwd><kwd>фосфатидилэтанол</kwd><kwd>беременность разных сроков</kwd></kwd-group><kwd-group xml:lang="zh"><kwd>内源性中毒</kwd><kwd>中分子物质</kwd><kwd>磷脂酰乙醇</kwd><kwd>不同孕期</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Российской Федерации</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of Science and Higher Education of the Russian Federation</institution></institution-wrap><institution-wrap><institution xml:lang="zh">Ministry of Science and Higher Education of the Russian Federation</institution></institution-wrap></funding-source><award-id>123051600012-7</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Florensov VV, Protopopova NV, Kolesnikova LI. 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