The interstitial system of the trigeminal spinal tract projects to the red nucleus in mice

The interstitial system of the trigeminal spinal tract projects to the red nucleus in mice

Author Pinto, Magali Luci Autor UNIFESP Google Scholar
Olyntho-Tokunaga, Heloisa Helena Vieira Autor UNIFESP Google Scholar
Souccar, Caden Autor UNIFESP Google Scholar
Schoorlemmer, Gerhardus Hermanus Maria Autor UNIFESP Google Scholar
Lapa, Rita de Cassia Ribeiro da Silva Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract We studied projections from the interstitial system of the spinal trigeminal tract (InSy-S5T) to the red nucleus of the mouse with retrograde tracers (fluorogold and latex microbeads impregnated with rhodamine and fluorescein). Injections in the magnocellular part of the red nucleus caused labeling of cells in the rostral, intermediate, and caudal paratrigeminal nucleus (Pa5), dorsal paramarginal nucleus (PaMD), insular trigemeo-lateral cuneate nucleus (I5CuL), and the trigeminal extension of the parvocellular reticular formation (5RPC). All projections were bilateral, but contralateral projections were stronger. the number of retrogradely labeled cells in the InSy-S5T in 3-, 6-, and 12-month-old mice was similar. Injections restricted to the parvocellular red nucleus did not label the nuclei of the InSy-S5T. This projection from the InSy-S5T to the red nucleus may mediate modulation of the facial muscles by pain and other sensory information.
Keywords InSy-S5T
red nucleus
paratrigeminal nucleus
fluorogold
retrograde tracer
mouse
Language English
Date 2007-12-01
Published in Somatosensory and Motor Research. New York: Informa Healthcare, v. 24, n. 4, p. 221-225, 2007.
ISSN 0899-0220 (Sherpa/Romeo, impact factor)
Publisher Informa Healthcare
Extent 221-225
Origin http://dx.doi.org/10.1080/08990220701802950
Access rights Closed access
Type Article
Web of Science ID WOS:000252892100007
URI http://repositorio.unifesp.br/handle/11600/30195

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