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C-PON immunoreactive neurons in the neostriatum of the hedgehog (Erinaceus europaeus): A correlated light- and electron-microscopic study

AuthorsVillalba, Rosa M.; Martínez-Murillo, Ricardo ; Polak, J. M.; Rodrigo García, José
Issue Date1994
CitationCell and Tissue Research 277: 177-181 (1994)
AbstractThe present study provides light- and electron-microscopic immunocytochemical data on the presence of neurons that are immunoreactive to the C-terminal flanking peptide of neuropeptide Y, C-PON, in the neostriatum of the hedgehog (Erinaceus europaeus). Positive neurons have mostly fusiform or round perikarya from which two to four poorly branched processes arise. Immunostained fibers and puncta are also evenly distributed throughout the neostriatum. Ultrastructurally, each neuron exhibits a deeply invaginated nucleus surrounded by abundant cytoplasm with a well-developed rough endoplasmic reticulum and Golgi apparatus. Positive neurons receive symmetric and asymmetric synapses from unlabeled terminals. The results of this study can be correlated with previous findings, as the C-PON-positive neurons of the hedgehog resemble medium-sized neostriatal neurons that are known to be local circuit neurons exhibiting C-PON in the rat. Thus, a high degree of C-PON neuronal system phylogenetic conservation and function can be postulated for the neostriatum of mammals.
Identifiersdoi: 10.1007/s004410050145
issn: 0302-766X
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