Intravascular Hemolysis of Red Blood Cells in the Development of Organ Dysfunctions in Critical Conditions

نویسنده

  • Yu. P. Orlov
چکیده

куляторного русла, лежащие в основе органных диcфункций при критических состояниях, во многом связаны с вну: трисосудистым гемолизом эритроцитов, выходом свободного гемоглобина и его последующим катаболизмом до ио: нов Fe. Предполагается, что в условиях массивного внутрисосудистого гемолиза формируется недостаточность системы связывания, транспорта и утилизации микроэлемента. Избыток ионов Fe, обладающих высокой каталити: ческой активностью, может оказывать прямое повреждающее действие на эндотелий капилляров с развитием «ка: пиллярной утечки». Большое количество ионов Fe в условиях гипоксии, ацидоза и реперфузии исключает из реак: ций нейтрализации первичных активных радикалов основной субстрат для эндогенных антиоксидантов — перекись водорода и супероксидный радикал, что способствует активации процессов перекисного окисления липидов и син: тезу более токсичных вторичных радикалов. Ключевые слова: микроциркуляция, органные диcфункции, гемолиз эритроцитов, свободный гемоглобин, ионы Fe, реперфузия.

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تاریخ انتشار 2014