Antagonisty retseptorov angiotenzina II v poiskakh «farmakologicheskoy nishi»


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Abstract

Прогрессирование сердечно-сосудистых заболеваний – от факторов риска до развития фатальных осложнений – связано с нарастанием активности ренин-ангиотензин-альдостероновой системы (РААС). Хроническая гиперактивация РААС проявляется увеличением содержания в крови и тканях ее главного эффекторного пептида – ангиотензина II. К числу основных физиологических эффектов ангиотензина II относятся вазоконстрикция, усиление синтеза и секреции альдостерона, задержка натрия и воды, повышение тонуса симпатической нервной системы, усиление высвобождения вазопрессина, эндотелина-1 и норадреналина, стимуляция роста кардиомиоцитов и клеток соединительной ткани в миокарде, пролиферации гладкомышечных клеток и фибробластов в сосудистой стенке, а также мезангиальных клеток в почечных клубочках. Повреждающее воздействие ангиотензина II на органы-мишени выражается в развитии гипертрофии миокарда и миокардиофиброза, прогрессировании атеросклероза, повышении внутриклубочкового давления с последующим развитием нефросклероза, патологической цереброваскулярной реконструкции. Результаты выполненных экспериментальных и клинических исследований позволяют считать повышение уровня ангиотензина II независимым фактором риска сердечно-сосудистых заболеваний

About the authors

N. B Perepech

ГОУ ВПО Санкт-Петербургская государственная медицинская академия им. И.И.Мечникова

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