SEROTONINSLEEP

SEROTONERGIC REGULATION OF SLEEP RELATED NEURAL CIRCUIT

Coordinatore	UNIVERSITY COLLEGE LONDON    more  Organization address address: GOWER STREET city: LONDON postcode: WC1E 6BT contact info Titolo: Ms. Nome: Malgorzata Cognome: Kielbasa Email: send email Telefono: 4420310000000 Fax: 442078000000
Nazionalità Coordinatore	United Kingdom [UK]
Totale costo	231˙283 €
EC contributo	231˙283 €
Programma	FP7-PEOPLE Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	FP7-PEOPLE-2012-IIF
Funding Scheme	MC-IIF
Anno di inizio	2013
Periodo (anno-mese-giorno)	2013-09-01   -   2015-08-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	UNIVERSITY COLLEGE LONDON  Organization address address: GOWER STREET city: LONDON postcode: WC1E 6BT contact info Titolo: Ms. Nome: Malgorzata Cognome: Kielbasa Email: send email Telefono: 4420310000000 Fax: 442078000000	UK (LONDON)	coordinator	231˙283.20

Mappa

 Word cloud

Esplora la "nuvola delle parole (Word Cloud) per avere un'idea di massima del progetto.

 Obiettivo del progetto (Objective)

'Summary: The appropriate regulation of sleep and wakefulness is a fundamental biological process that impacts human health, cognitive performance, and quality of life. However, the neural mechanisms regulating sleep/wake behavior and its associated circuits in the brain are largely unknown. Recent studies have illustrated the role of hypocretin/orexin (Hcrt) in sleep regulation, but the mechanisms that control the Hcrt system and subsequent changes in neural circuit function are still poorly described. I will take advantage of the larval zebrafish, a genetically and optically accessible model organism whose brain shares basic sleep-related structures with the human brain, in order to systematically investigate how and to what extent serotonergic (5-hydroxytrypamine, 5-HT) neurons of the dorsal raphe nucleus exert effects on sleep cycles via the Hcrt system and associated downstream circuitry. Furthermore, I will disambiguate whether 5-HT neurons affect sleep by direct influence on Hcrt neuron activity or by signalling downsteam on Hcrt target neurons. These analyses require a multidisciplinary approach possible only in zebrafish. First, I will use a novel bioluminescence-based method to investigate how drugs that target the 5-HT system, alter the activity of Hcrt and 5-HT neurons in freely behaving fish. Second, in order to verify a causal relationship between activity in 5-HT and Hcrt neurons and observed behavioral changes, I will activate the same neural populations with optogenetic methods while monitoring behavior in freely behaving fish. Third, I will use the same pharmacological and optogenetic approaches to visualize the direct effects of specific subpopulations of 5-HT and Hcrt neurons on activity throughout the whole brain with functional two-photon calcium imaging. The results of these experiments will provide invaluable insights into how specific neuromodulatory systems interact with each other in order to regulate neural circuits underlying sleep.'