Golgi and immunocytochemical analysis of neurons in trigeminal subnucleus interpolaris: correlations with cellular localization of enkephalin.

Neuroscience
M A MatthewsK D Hoffman

Abstract

Recent electrophysiological evidence shows that rostral levels of the trigeminal spinal complex are concerned with pain processing from receptive fields in the face and oral cavity. The ventrolateral quadrant of the subnucleus interpolaris contains concentrations of enkephalin, dynorphin, serotonin, substance P and GABA [Matthews M. A., Hernandez T. V. and Liles S. L. (1987) Synapse 1, 512-529; Matthews M. A., McDonald G. K. and Hernandez T. V. (1988) Somatosensory Res. 5, 205-217]. These transmitters have also been localized to the fusiform and stalked cells in Laminae I and II of the subnucleus caudalis [Basbaum A. I. and Fields H. L. (1984) A. Rev. Neurosci. 7, 309-338]. The present study compares Golgi impregnations of the subnucleus interpolaris with sections at the same levels immunoreacted against enkephalin to determine if comparable cells exist in the subnucleus interpolaris and if they occur predominantly in the ventrolateral quadrant of the subnucleus. Twelve, young adult cats were killed by perfusion, the brainstems removed and either processed for rapid Golgi impregnation or sectioned and immunoreacted for enkephalin using the avidin-biotin Vectastain method. Golgi impregnated tissue was sectioned in the coronal, t...Continue Reading

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Citations

May 22, 1991·The Journal of Comparative Neurology·A YoshidaC Y Chiang
Mar 15, 1993·The Journal of Comparative Neurology·F M BoissonadeG E Lucier

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