http://www.cnr.it/ontology/cnr/individuo/prodotto/ID50252
Hypoglossal nucleus projections to the rat masseter muscle (Articolo in rivista)
- Type
- Label
- Hypoglossal nucleus projections to the rat masseter muscle (Articolo in rivista) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Alternative label
O. Mameli, S. Stanzani, A. Russo, Pellitteri R, Spatuzza M, Caria M.A., Mulliri G., P.L. De Riu (2009)
Hypoglossal nucleus projections to the rat masseter muscle
in Brain research
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- O. Mameli, S. Stanzani, A. Russo, Pellitteri R, Spatuzza M, Caria M.A., Mulliri G., P.L. De Riu (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- aDepartment of Biomedical Sciences, Human Physiology Division, University of Sassari, viale San Pietro 43/B, 07100 Sassari, Italy
bDepartment of Physiological Sciences, University of Catania, 95125 Catania, Italy
cInstitute of Neurological Sciences, National Research Council, Section of Catania, 95125, Catania, Italy (literal)
- Titolo
- Hypoglossal nucleus projections to the rat masseter muscle (literal)
- Abstract
- We investigated in the rat whether hypoglossal innervation extended to facial muscles
other than the extrinsic musculature of the mystacial pad. Results showed that hypoglossal
neurons also innervate the masseter muscle. Dil injected into the XII nucleus showed
hypoglossal axons in the ipsilateral main trunk of the trigeminal nerve. After Gasser's
ganglion crossing, the axons entered into the infraorbital division of the trigeminal nerve
and targeted the extrinsic muscles of the mystacial pad. They also spread into the masseter
branch of the trigeminal nerve to target the polar portions of the masseter muscle spindles.
Retrograde double labelling, performed by injecting Dil into the pad and True Blue into the
ipsilateral masseter muscle, showed labelled hypoglossal neurons in the medio-dorsal
portion of the XII nucleus. The majority of these neurons were small (1520 ¼m diameter),
showed fluorescence for Dil and projected to the mystacial pad. Other medium-size neurons
(25 ¼mdiameter) were instead labelled with True Blue and projected to the masseter muscle.
Finally, in the same area, other small hypoglossal neurons showed double labelling and
projected to both structures. Functional hypotheses on the role of these hypoglossal
projections have been discussed. (literal)
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