DESCENDING PROJECTIONS OF SUBSTANCE P-AND CHOLECYSTOKININ-CONTAINING NEURONS OF THE PERIAQUEDUCTAL GRAY AND EDINGER-WESTPHAL NUCLEUS TO THE SPINAL CORD——A STUDY WITH THE COMBINING METHOD OF TRACING WITH IMMUNOCYTOCHEMISTRY
- VernacularTitle:中脑导水管周围灰质和E-W核中SP和CCK样神经元至脊髓的投射——HRP与免疫细胞化学结合法研究
- Author:
Xijing ZHANG
;
Changgeng ZHU
- Publication Type:Journal Article
- Keywords:
Periaqueductal gray;
Edinger-Westphal nucleus;
Spinal cord;
HRP tracing;
Immunocytochemistry
- From:
Acta Anatomica Sinica
1953;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Projections from substance P (SP)-and cholecystokinin (CCK) containing neurons in the periaqueductal gray(PAG)and Edinger-Westphal(E-W)nucleus to the spinal cord were studied by means of the combining method of HRP tracing with immunocytochemistry in rats. The results showed that a few neurons in the ventrolateral region of PAG projected bilaterally to the cervical, thoracic and lumbar segments of the spinal cord, with the predominant projections from the ipsilateral side. The authors reported that these descending projection neurons showed SP-like immunoreactivity for the first time(account for 48%). The neurons of E-W nucleus projected diffusely to all segments of the spinal cord contained SP (70%) or CCK (73%) respectively, suggesting that at least a part of E-W neurons projecting to the spinal cord contain both SP and CCK.
