菸草酞酰胺腺嘌吟二核苷酸磷酸黄递酶(Nuotinamide adenine dinucleotide phosphate diaphorase,NADPH)为一内源性酶,它能合成NAPH,近来再发现它是一氧化氮(NO)合成酶.NO激活鸟嘌吟核苷酸环化酶,提高谷氨酸受体中NMDA受体中cGMP水平.因此,NO被认为是一种气体性神经递质,和感觉学习、记忆等多种重要功能有关.孤束核是脑干内唯一传递内脏感觉的核团,全身大部分内脏传入投射都投射到孤 Nuotinamide adenine dinucleotide phosphate diaphorase (NADPH) is an endogenous enzyme that synthesizes NAPH and has recently been found to be nitric oxide synthase (NO) .NO Activation of guanine nucleotide cyclase, glutamate receptors to improve NMDA receptor cGMP level.Therefore, NO is considered to be a gaseous neurotransmitter, and sensory learning, memory and other important functions The solitary tract nucleus is the only nucleus in the brain stem that transmits visceral sensations. Most of the visceral organs in the whole body are projected onto solitary