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Un nouveau site Web consacré à un trouble du sommeil courant chez les individus aveugles


News provided by

Vanda Pharmaceuticals Inc.

Oct 25, 2011, 16:30 ET

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ROCKVILLE, Maryland, October 25, 2011 /PRNewswire/ --

24sleepwake.com propose des outils interactifs ainsi que les dernières nouvelles de la recherche afin d'aider les patients, leurs amis et familles

Pour la plupart des personnes, l'horloge biologique est plutôt régulière : on se réveille avec le soleil, on s'endort lorsque la nuit tombe. Mais pour une personne atteinte d'un Syndrome hypernycthéméral (ou syndrome libre-cours), son horloge biologique interne se modifie chaque jour. De fait, sa période de sommeil est reportée d'environ 15 minutes chaque nuit, ce qui rend extrêmement difficile le maintien d'un emploi du temps régulier.

Les personnes atteintes du syndrome libre-cours souffrent d'une insomnie chronique et d'une somnolence diurne excessive, interférant souvent avec leurs obligations sociales, familiales et professionnelles. Ce trouble est particulièrement courant chez les individus totalement aveugles et qui n'ont aucune perception de la lumière.  Il affecte plus de 50 pour cent de cette population. Les personnes voyantes peuvent également présenter des troubles du rythme circadien, prenant le plus souvent la forme du décalage horaire et du travail posté.

C'est aujourd'hui que Vanda Pharmaceuticals Inc. a lancé le site 24sleepwake.com en France afin de promouvoir une sensibilisation et un soutien en faveur de ceux qui sont susceptibles de souffrir du syndrome libre-cours. Grâce à la consultation de ce site Web, les personnes pourront accéder à des informations utiles ainsi qu'à des articles sur la recherche, écouter des interviews conduites avec des experts médicaux et en savoir plus sur les essais cliniques.    

Pour plus d'informations, veuillez consulter http://www.24sleepwake.com/fr

À propos du rythme Circadien
Le rythme circadien est le cycle d'activité quotidien qui gère les rythmes de notre corps, de la digestion aux sécrétions hormonales jusqu'à notre capacité de dormir.  

Le moment du sommeil humain est régi par la durée de la dernière période de sommeil d'une personne et par son horloge biologique interne. L'horloge biologique ou horloge circadienne contrôle le moment du sommeil humain selon un rythme régulé par une région du cerceau appelée le noyau suprachiasmatique (NSC). Le NSC, situé dans l'hypothalamus, envoie des signaux pour nous aider à rester éveillé et combattre les effets de la fatigue. Ces signaux atteignent un pic dans la soirée, lorsque le besoin de sommeil se fait sentir, puis ils diminuent lorsque l'heure du coucher approche.

Chez la plupart des personnes, les rythmes circadiens sommeil/réveil sont synchronisés sur un cycle de 24 heures et sont déterminés par l'exposition à la lumière dont elles bénéficient le matin ou le soir. Lorsque l'horloge biologique d'une personne est décalée par rapport à son cycle de sommeil et de réveil, ceci peut entraîner l'apparition d'un trouble du rythme circadien du sommeil.  

À propos de Vanda Pharmaceuticals Inc.
Vanda Pharmaceuticals Inc. est une société biopharmaceutique se consacrant au développement et à la commercialisation de produits au stade clinique pour les troubles du système nerveux central. Pour en savoir plus sur Vanda, veuillez visiter : http://www.vandapharma.com/

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