Циркулирующий нейрегулин-1 и хроническая сердечная недостаточность с сохранной фракцией выброса

Хроническая сердечная недостаточность (ХСН) с сохранной фракцией выброса (ХСНсФВ) представляет нерешенную социальнозначимую проблему, поскольку ассоциируется с высоким уровнем заболеваемости и смертности. Ранние маркеры данной патологии отсутствуют, а подходы к лечению не разработаны. Существует необходимость дальнейшего изучения механизмов развития ХСНсФВ для выявления терапевтических мишеней. Согласно современным представлениям о патогенезе, важная роль в развитии ХСНсФВ отводится системному воспалению и дисфункции эндотелия, которые способствуют формированию фиброза миокарда и нарушению процессов релаксации кардиомиоцитов, приводя к диастолической дисфункции и повышению давления наполнения левого желудочка (ЛЖ). Нейрегулин-1 (NRG-1) – паракринный фактор роста и естественный агонист рецепторов семейства ErbB, синтезируемый эндотелием коронарных микрососудов. NRG-1 / ErbB4 система сердца активируется на ранних стадиях ХСНнФВ, повышая устойчивость кардиомиоцитов к воздействию окислительного стресса. Доклинические и клинические (фазы II и III) исследования показывают, что терапия рекомбинантным NRG-1 приводит к улучшению сократительной способности миокарда, развитию обратного ремоделирования ЛЖ. Результаты последних исследований свидетельствуют о возможных противовоспалительных и антифибротических эффектах NRG-1, что формирует предпосылки для изучения активности данной системы у больных с ХСНсФВ.

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