一氧化氮作为体内重要的信使分子和效应分子也许还不为许多人重视 ,但随着国外对此研究的不断深入 ,国内对一氧化氮的研究也呈现后来居上的势头 .那么 ,作为体内合成一氧化氮的关键酶———一氧化氮合酶(ＮＯＳ)便成为研究的热点 .近期研究证实[1 ] ＮＯＳ与黄递酶是同一物质 , Nitric oxide as an important messenger molecule and effector molecule in the body may not pay attention to many people, but with the deepening of this research abroad, the domestic research on nitric oxide also showed the trend of gaining momentum later, then, as in vivo synthesis Nitric oxide synthase (NOS), a key enzyme of nitric oxide, has become a research hot spot.Recent studies confirm [1] that NOS is the same substance as diaphorase,