Objective: To study the role of nitric oxide (NO) in hippocampal delayed neuronal death (DND) after transient global ischemia and observe the effects of nonselective nitric oxide synthase (NOS) inhibitor N G nitro L arginine(L NNA)on DND.

• 目的 :研究一氧化氮 ( NO)在缺血性海马迟发性神经元死亡 ( DND)中的作用 ,观察非选择性一氧化氮合酶 ( nitricoxidesynthase,NOS)抑制剂 NG-nitro-L-arginine( L-NNA)对缺血性海马 DND的影响。