Effect of Sodium Nitrite and L-NNA on the Outcome of Experimental Ischemic Stroke.

We studied the effect of sodium nitrite in doses of 5 and 50 mg/kg and NO synthase inhibitor L-NNA in a dose of 20 mg/kg on the course of experimental ischemic stroke caused by occlusion of both carotid arteries. Sodium nitrite and NO synthase inhibitor were administered 1 h prior to occlusion of еру carotid arteries and 5 sec after brain ischemia. Sodium nitrite in a dose of 5 mg/kg had a protective effect on the time course of neurological disorders and reduced animal mortality. NO synthase inhibitor L-NNA aggravated the neurological symptoms.