Top-down control of water intake by the endocannabinoid system
Zhao, Z.; Soria-Gomez, E.; Varilh, M.; Julio-Kalajzic, F.; Cannich, A.; Castiglione, A.; Vanhoutte, L.; Duveau, A.; Zizzari, P.; Beyeler, A.; Cota, D.; Bellocchio, L.; Busquets-Garcia, A.; Marsicano, G.
Show abstract
Water intake is regulated by neocortical top-down circuits, but their identity and the cellular mechanisms involved are scantly known. Here, we show that endogenous activation of type-1 cannabinoid receptors (CB1) promotes water intake and that endocannabinoid modulation of excitatory projections from the anterior cingulate cortex to the basolateral amygdala is sufficient to guarantee physiological drinking. These data reveal a new circuit involved in the homeostatic control of water intake.
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