按粗略估计人类神经系约有1千亿个神经元,每个神经元又有数千个与其它细胞相接触的突触部位因而构成了极为复杂的神经网络,在其中大量的信息进行加工、整合并导致生物效应。神经递质是突触部位信息传递、加工的必要媒介,故为近年神经生物学重要的研究对象。于六十年代,被确定为神经递质的仅有乙酰胆硷和几类氨基酸和单胺类化合物,进入七十年代,由于免疫组化等新技术的发展, According to a rough estimate of the human nervous system, there are about 100 billion neurons, and each neuron has thousands of synapses that come into contact with other cells, thus forming an extremely complicated neural network in which a large amount of information is processed, Integrate and lead to biological effects. Neurotransmitter is synaptic transmission of information, processing the necessary medium, it is an important object of neurobiology in recent years. In the sixties, only the acetylcholine and several kinds of amino acids and monoamines that were identified as neurotransmitters entered the seventies. Due to the development of new technologies such as immunohistochemistry,