Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Does the intergeniculate leaflet play a role in the integration of the photoperiod by the suprachiasmatic nucleus?
Autore:
Jacob, N; Vuillez, P; Lakdhar-Ghazal, N; Pevet, P;
Indirizzi:
Univ Strasbourg 1, CNRS, UMR 7518, F-67000 Strasbourg, France Univ Strasbourg 1 Strasbourg France F-67000 , F-67000 Strasbourg, France Univ Mohammed V, Dept Biol, Unite Neurosci, Rabat, Morocco Univ Mohammed V Rabat Morocco Dept Biol, Unite Neurosci, Rabat, Morocco
Titolo Testata:
BRAIN RESEARCH
fascicolo: 1-2, volume: 828, anno: 1999,
pagine: 83 - 90
SICI:
0006-8993(19990515)828:1-2<83:DTILPA>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEUROPEPTIDE-Y IMMUNOREACTIVITY; LATERAL GENICULATE-NUCLEUS; CIRCADIAN TIMING SYSTEM; NON-PHOTIC ENTRAINMENT; INDUCED PHASE-SHIFTS; GOLDEN-HAMSTER; SYRIAN-HAMSTER; ENDOGENOUS MELATONIN; CLOCK; PROJECTIONS;
Keywords:
intergeniculate leaflet; suprachiasmatic nucleus; Fos protein; NPY; photoperiod; Syrian hamster;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Pevet, P Univ Strasbourg 1, CNRS, UMR 7518, 12 Rue Univ, F-67000 Strasbourg, France Univ Strasbourg 1 12 Rue Univ Strasbourg France F-67000 , France
Citazione:
N. Jacob et al., "Does the intergeniculate leaflet play a role in the integration of the photoperiod by the suprachiasmatic nucleus?", BRAIN RES, 828(1-2), 1999, pp. 83-90

Abstract

The circadian clock located in the suprachiasmatic nuclei (SCN) is influenced by the photoperiod. After the transfer from a long (LP 14:10) to a short photoperiod (SP 10:14), the adjustment of the light sensitivity of the SCN, in terms of Fos expression, takes 25 nights. To examine the contributionof the thalamic intergeniculate leaflet (IGL) and its NPY-immunoreactive projection in the extension of the duration of the photosensitive phase of the SCN, male Syrian hamsters received electrolytic lesions of the IGL. We showed a lower number of Fos-ir cells in the SCN of IGLx hamsters following a light pulse applied 13 h after dark onset, 25 nights after the transfer from LP to SP compared to sham operated hamsters. The present study shows that the integrity of the IGL is necessary to have a complete integration of photoperiodic changes by the SCN. This demonstrates the involvement of the IGL in the integration of photoperiodic information by the SCN. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 16/07/20 alle ore 19:12:22