Résumé
Objective To study the protective effects of Tianma xingnao capsule on brain blood circulation in mice and rats.Methods The arteria carotis externa was ligated,and arteria carotis interna was kept.The left carotid artery was exposed and placed over an ultrasonic flow probe.The brain flow volume was recorded with an Ultrasonic Volume.The pursiness time of mice was observed to evaluate the effect of Tianma xingnao capsule on cerebral ischemia and anoxia.The permeability of normal blood-cerebral barrier was investigated in mice.Results Tianma xingnao capsule significantly increased brain blood flow and prolonged mouse pursiness time.Tianma xingnao capsule at a dose of 4 g/kg significantly elevated the content of Evans in mouse brain.Conclusions Tianma xingnao capsule can increase the brain blood flow in rats and improve brain blood circulation in mice.It is obviously advantageous to protect against cerebral ischemia and hypoxia.