Journal of Okayama Medical Association
Published by Okayama Medical Association

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Full-text articles are available 3 years after publication.

上丘と小脳虫部第Ⅸ小葉に投射するラット三叉神経脊髄路核および主知覚核ニューロン

田中 秀昌 岡山大学医学部第三解剖学教室
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抄録
Distributions of efferent neurons projecting to the superior colliculus (SC) and the posterior vermis of the cerebellum were studied in the rat trigeminal sensory nuclei by retrograde labeling with wheat germ agglutinin-horseradish peroxidase (WGA-HRP). After unilateral injection of the tracer into the SC, small to medium-sized neurons in the principal sensory (5SNPR) and spinal trigeminal nuclei (5SP) were contralaterally labeled. A large number of the labeled neurons were found in the border between the interpolar (5SPip) and the oralis subnucleus (5SPo) of 5SP and in the rostral part of 5SPo. Very few neurons were labeled in the rostral tip of the caudal subnucleus of 5SP (5SPc). Labeled neurons in the 5SNPR and 5SP were detected after WGA-HRP injection into the vermal lobule Ⅸ. The labeled neurons were densely distributed in the dorsomedial region of 5SPip and the caudal 5SPo, but less frequently in 5SNPR. No neurons were labeled in 5SPc. Retrograde double labeling by fluorescent dyes showed that a small number of neurons in the ventral part of 5SNPR sent divergent axons to both lobule Ⅸ and SC.
キーワード
三叉神経脊髄路核
三叉神経主知覚核
小脳虫部第Ⅸ小葉
上丘
逆行性標識
ISSN
0030-1558
NCID
AN00032489