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- W1999715897 abstract "The aim of the present study was to determine the origin of the catecholaminergic inputs to the telencephalic basal ganglia of amphibians. For that purpose, retrograde tracing techniques were combined with tyrosine hydroxylase immunohistochemistry in the anurans Xenopus laevis and Rana perezi and the urodele Pleurodeles waltl. In all three species studied, a topographically organized dopaminergic projection was identified arising from the posterior tubercle/mesencephalic tegmentum and terminating in the striatum and the nucleus accumbens. Although essentially similar, the organization of the mesolimbic and mesostriatal connections in anurans seems to be more elaborate than in urodeles. The present study has also revealed the existence of a noradrenergic projection to the basal forebrain, which has its origin in the locus coeruleus. Additional catecholaminergic afferents to the striatum and the nucleus accumbens arise from the nucleus of the solitary tract, where catecholaminergic neurons appear to give rise to the bulk of the projections to the basal forebrain. In other regions, such as the olfactory bulb, the anterior preoptic area, the suprachiasmatic nucleus, and the thalamus, retrogradely labeled neurons (after basal forebrain tracer-applications) and catecholaminergic cells were intermingled, but none of these centers contained double-labeled cell bodies. It is concluded that the origin of the catecholaminergic innervation of the striatum and the nucleus accumbens in amphibians is largely comparable to that in amniotes. The present study, therefore, strongly supports the existence of a common pattern in the organization of the catecholaminergic inputs to the basal forebrain among tetrapod vertebrates. J. Comp. Neurol. 378:50–69, 1997. © 1997 Wiley-Liss, Inc." @default.
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- W1999715897 date "1997-02-03" @default.
- W1999715897 modified "2023-10-17" @default.
- W1999715897 title "Basal ganglia organization in amphibians: Catecholaminergic innervation of the striatum and the nucleus accumbens" @default.
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- W1999715897 doi "https://doi.org/10.1002/(sici)1096-9861(19970203)378:1<50::aid-cne3>3.0.co;2-j" @default.
- W1999715897 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/9120054" @default.
- W1999715897 hasPublicationYear "1997" @default.
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