大鼠脑内血管的胆硷能神经纤维的分布

本文应用ＡＢＣ免疫过氧化物酶法，以胆硷乙酰转移酶（ＣｈＡＴ）作为标记物，对１２只Ｗｉｓｔａｒ大鼠脑实质内血管的免疫阳性神经纤维的分布类型，纤维密度进行了观察。结果是：端脑皮质区（第Ⅰ感觉运动皮质，第Ⅱ感觉运动皮质，中央前区，纹状皮质）的血管；海马（ＣＡ１区，ＣＡ２区）血管；下丘脑（前区、外侧区）血管；脑桥（被盖部）及延髓实质内血管均可见明显免疫反应阳性胆硷能神经纤维分布。纤维呈棕褐色，多数为单一细线状结构。纤维走行不一，有的与血管长轴垂直走行或斜行，有的与血管长轴平行。可见类似膨体样结构。各部脑实质内血管阳性纤维分布均较稀疏。

CHOLINERGIC INNERVATION IN INTRACEREBRAL VESSELS OF THE RAT

Cholinergic nerve of the intracerebral vessels in 12 Wistar rats was observed with ABC immunoperoxidase technique,employing cholineacetyltransferase (ChAT ) as label. The immunoreactive positive fibers were found on the vessels of telen cephalic cortex, hypothalamus, pons and medulla oblongata, The positive fiber appeared as fine threads. mostly distributing the longitudinally or obliquely along the long axis of the vessels. The density of the fibers was very low. The function of the cholinergic fibers on the vessel wall regulating the intracerebral vessels and local microcirculation were discussed.