The gasping time of isolated head of mice and the survival time of mice subjected to bilateral carotid artery ligation were obviously prolonged by BLE;

• BLE静脉给药可明显延长小鼠断头后喘息时间，延长结扎双侧颈总动脉及迷走神经小鼠的存活时间，说明BLE可改善脑组织能量代谢；