目的：从中枢递质的水平研究促智药阿尼西坦的作用机制。

OBJECTIVE: To investigate the possible mechanism of aniracetam (am) in central transmitter level.

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我们不知道为什么尼古丁受体表达各种组织器官的所有细胞表面，但我们知道尼古丁是一个重要的神经递质在中枢神经系统。

We do not know why nicotine receptors express in all the cell surfaces from various tissue origins, but we do know that nicotine is an important neuron transmitter in the central nervous system.

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多巴胺(DA)是中枢神经递质之一。

Dopamine (DA) is one of neurotransmitters of the central nervous system.

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