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- W2895841545 endingPage "2338" @default.
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- W2895841545 abstract "The nucleus of the solitary tract is a potential site for taste-visceral interactions. Connections from the caudal, visceral area of the nucleus (cNST) to the rostral, gustatory zone (rNST) have been described, but the phenotype of cells giving rise to the projection(s) and their distribution among rNST subdivisions are unknown. To determine these characteristics of the intrasolitary pathway, we injected pan-neuronal and floxed AAV viruses into the cNST of mice expressing cre in glutamatergic, GABAergic, or catecholaminergic neurons. Particular attention was paid to the terminal field distribution in rNST subdivisions by simultaneously visualizing P2X2 localized to gustatory afferent terminals. All three phenotypically identified pathways terminated in rNST, with the density greatest for glutamatergic and sparsest for catecholaminergic projections, observations supported by retrograde tracing. Interestingly, cNST neurons had more prominent projections to rNST regions medial and ventral to P2X2 staining, i.e., the medial and ventral subdivisions. In addition, GABAergic neurons projected robustly to the lateral subdivision and adjacent parts of the reticular formation and spinal trigeminal nucleus. Although cNST neurons also projected to the P2X2-rich central subdivision, such projections were sparser. These findings suggest that cNST visceral signals exert stronger excitatory and inhibitory influences on local autonomic and reflex pathways associated with the medial and ventral subdivisions compared to weaker modulation of ascending pathways arising from the central subdivision and ultimately destined for the forebrain." @default.
- W2895841545 created "2018-10-26" @default.
- W2895841545 creator A5010793488 @default.
- W2895841545 creator A5015887937 @default.
- W2895841545 creator A5038505160 @default.
- W2895841545 creator A5058210218 @default.
- W2895841545 creator A5088992606 @default.
- W2895841545 date "2018-10-01" @default.
- W2895841545 modified "2023-10-15" @default.
- W2895841545 title "Neurons with diverse phenotypes project from the caudal to the rostral nucleus of the solitary tract" @default.
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