动物脑内许多重要的化学物质

如乙酰胆硷

r-氨基丁酸

肽类物质和环核苷酸等含量的高低与动物处死方法有密切关系。因此如何迅速终止脑内生化反应

准确反映动物死前瞬间化学物质的实际含量

这是神经化学研究中必须解决的一个重要问题。70年代以来

微波在生物学作用中的研究进展很快

尤其是应用微波技术来研究中枢神经系统的功能引起了特别注意。利用微波穿射动物头部时产生的热效应

可以迅速灭活脑内The purpose of the present work is to compare the contents of cyclic nucleotide in cerebral cortex

thalamus

hypothalamus and middle central grey of rats and rabbits by irradiation with high power model WSB-1 mi- crowave and decapitation. The results indicated that the levls of cAMP in brain areas were much higher in the decapitaion group than those in the microwave irradiation and the contents of cGMP in brain were obviou- sly decreased in decapitated animals. According to the experimental resu- lts of direct measurement of temperature and activity of phosphodiesterase in brain areas

the microwave apparatus has been proved extremely effici- ent. It is simple in construction and convenient in use. It can kill not o- nly rabbits and cats in 2 sec. but also rats and mice in 1.4-1.6 sec. It su- pplies an advanced technical means for studying neurochemistry