PMID: 8586994Oct 1, 1995Paper

The distribution of NADPH-d in the central grey region (lamina X) of rat upper thoracic spinal cord

Journal of Neurocytology
F R TangE A Ling

Abstract

The distribution of nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d) in the central grey region (lamina X of Rexed) of the rat upper thoracic cord was examined by LM and EM. Numerous NADPH-d positive neuronal somata and fibres were present in the subependymal areas of the central grey region at levels T1-T3. Most of the neurons were located dorsal to the central canal in horizontal sections through this region. Many medially-directed NADPH-d positive fibres arising from neurons in n. intermediolateralis pars principalis, n. intercalatus spinalis and longitudinally-directed NADPH-d positive fibres arising from neurons in n. intercalatus pars paraependymalis formed a subependymal plexus. In horizontal sections through the central canal, some NADPH-d positive nerve fibres appeared to traverse the ependyma to enter and run along the central canal. By EM, NADPH-d reaction products were localized on the nuclear membrane, outer mitochondrial membrane and Golgi apparatus of both neurons and ependymal cells and in some axon terminals containing pleomorphic and round agranular synaptic vesicles. Present results suggest that besides the traditional monoamine-, amino acid- and peptide-containing axon terminals, the central ...Continue Reading

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