Immunocytochemical studies of GABAergic neurons in rat basal ganglia and their relations to other neuronal systems |
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Authors: | W H Oertel E Mugnaini |
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Institution: | 1. Department of Pure and Applied Biology, Imperial College, London, SW7 2BB U.K.;2. Department of Anatomy and Lions'' Sight Centre, The University of Calgary, Calgary, Alberta, T2N 4N1 Canada |
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Abstract: | GABAergic neurons were localized in the rat basal ganglia by glutamate decarboxylase (GAD) immunohistochemistry. In the striatum (caudato-putamen, accumbens nucleus) a medium density of GAD-positive terminals was observed; a small number of medium-to-large size neurons and the vast majority of medium-size neurons were GAD immunoreactive. In addition, opioid peptide-like immunoreactivity was colocalized in a subclass of GAD-positive medium-size striatal neurons. The pallido-nigral system (GP, VP, EP, SNR) displayed a high density of GAD-positive axon terminals which synapsed upon dendrites and nerve cell bodies. The majority of pallido-nigral neurons also were GAD-immunoreactive. In contrast, the substantia nigra pars compacta and the subthalamic nucleus contained only few GAD-immunoreactive neurons. |
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Keywords: | retina S-potential horizontal cell axon terminal regenerative activity tetrodotoxin |
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