Immunocytochemical localization of the low-affinity nerve growth factor receptor (p75NGFR) in the cuneate nucleus of the rat and its relationship to cytochrome-oxidase activity.
Immunohistochemical staining for the 75-kDa, low-affinity nerve growth factor receptor (p75NGFR), within the cuneate nucleus (CN) of the adult rat revealed that this receptor is concentrated rostrocaudally in the middle CN (approximately 0.2-0.9 mm caudal to the obex), corresponding to that portion of the CN receiving densest projections of cutaneous primary afferent terminals. Furthermore, dense patches of p75NGFR-like immunoreactivity appear to correspond to the 'blotches' of cytochrome-oxidase activity observed in the middle region of the CN. This close correspondence between the localization pattern of p75NGFR in the CN and its functional organization suggests an important role for trophic factors in the CN's development and/or maintenance.
Crockett
D P
DP
Department of Neuroscience and Cell Biology, UMDNJ-Robert Wood Johnson Medical School, Piscataway 08854-5635.
Foschini
D R
DR
Girgis
W S
WS
Egger
M D
MD
D000818:Animals; D003576:Electron Transport Complex IV / Q000378:metabolism*; D007150:Immunohistochemistry / Q000379:methods; D008526:Medulla Oblongata / Q000033:anatomy & histology / Q000166:cytology / Q000378:metabolism*; D008970:Molecular Weight; D009412:Nerve Fibers / Q000378:metabolism / Q000648:ultrastructure; D009928:Organ Specificity; D051381:Rats; D017475:Receptors, Nerve Growth Factor / Q000032:analysis* / Q000378:metabolism*
D017475:Receptors, Nerve Growth Factor; D003576:Electron Transport Complex IV