SEGREGATION OF COARSE AND FINE GLOSSOPHARYNGEAL AXONS IN THE VISCERAL NUCLEUS OF THE TRACTUS SOLITARIUS OF THE CAT

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dc.contributor.authorCLAPS, A
dc.contributor.authorTORREALBA, F
dc.contributor.authorCALDERON, F
dc.date.accessioned2025-01-23T19:23:52Z
dc.date.available2025-01-23T19:23:52Z
dc.date.issued1989
dc.description.abstractThe projections of coarse and fine axons of the glossopharyngeal (IX) nerve upon the caudal two thirds of the nucleus of the tractus solitarius (NTS) were studied in the cat. These afferents convey the chemo- and baroreceptor activities from the carotid receptors. We applied the Fink-Heimer method on brainstem sections, at different survival times, after a petrosal ganglionectomy. A segregation of fine and coarse fibered components was observed. Degeneration of coarse axons was mostly found in the lateral NTS, while fine fiber degeneration was predominant in regions of the medial and commissural NTS. The injection of WGA-HRP in the different NTS divisions demonstrated that the lateral NTS was mainly innervated by the set of largest neurons of the petrosal ganglion and that the medial and the commissural NTS were innervated by the set of smaller neurons of the ganglia. These results were discussed in relation to cytoarchitecture, myeloarchitecture, distribution of normal axons, and known central connectivity of the different NTS divisions. We concluded that coarse and fine visceral afferents of the IX nerve, which includes the afferents of the carotid body and the carotid sinus, represent different afferent populations that project to particular divisions of the NTS and connect to different central pathways.
dc.fuente.origenWOS
dc.identifier.eissn1872-6240
dc.identifier.issn0006-8993
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/99277
dc.identifier.wosidWOS:A1989U901500009
dc.issue.numero1
dc.language.isoen
dc.pagina.final92
dc.pagina.inicio80
dc.revistaBrain research
dc.rightsacceso restringido
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleSEGREGATION OF COARSE AND FINE GLOSSOPHARYNGEAL AXONS IN THE VISCERAL NUCLEUS OF THE TRACTUS SOLITARIUS OF THE CAT
dc.typeartículo
dc.volumen489
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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