下丘脑投射至中脑旁中央区的纤维起源

THE ORIGIN OF THE HYPOTHALAMIC PROJECTIONS TO THE PARAMEDIAN MIDBRAIN IN THE RAT

用电泳方法将HRP导入大白鼠中脑中央灰质背外侧部,可见下丘脑前核、腹内侧核、背内侧核、乳头体前背核、乳头体前腹核和乳头体外侧核等处有较多的标记神经元。将酶导入中脑中央灰质腹侧部,在视前区、下丘脑前部外侧区、结节部外侧区、腹内侧核、背内侧核和乳头体前背核等处有标记神经元。酶导入中脑被盖内侧部,可见视前区、下丘脑前部外侧区、腹内侧核、背内侧核、乳头体前背核,乳头体内侧核和外侧核有标记神经元。

Cell bodies of the hypothalamus which project to various subdivisions of theparamedian midbrain were studied in the rat with the method of retrograde axonaltransport of HRP.After small amount of HRP was delivered electrophoreticallyinto the dorsolateral part of the central grey substance,the HRP-labelled cells werefound in the anterior hypothalamic nucleus,the ventromedial nucleus,the dorsome-dial nucleus,the dorsal premammillary nucleus,the ventral premammillary nucleus,the medial mammilary nucleus and the lateral mammillary nucleus,mainly in theipsilateral side.Following introduction of the enzyme into the ventral part ofcentral grey substance,there were HRP-labelled cells in the ipsilateral preoptic area,the lateral area of anterior hypothalamus(dorsal to the supraoptic nucleus),thelateral area of tuberal part,the ventromedial nucleus,the dorsomedial nucleus andthe dorsal premammillary nucleus.By introducing the HRP into the medial part oftegmentum,the HRP-labelled cells were observed in the preoptic area,the lateralarea of anterior hypothalamus,the ventromedial nucleus,the dorsomedial nucleus,the dorsal premammillary nucleus,the medial mammillary nucleus and the lateralmammillary nucleus.