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The cerebellum modulates thirst
Ila Mishra1,2, Bing Feng3, Bijoya Basu4
1Harrington Discovery Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA.
Nature Neuroscience
|July 10, 2024
Summary
The cerebellum regulates thirst by activating Purkinje neurons with the hormone asprosin. This discovery reveals the cerebellum
Area of Science:
- Neuroscience
- Endocrinology
- Physiology
Background:
- The cerebellum, traditionally viewed as a motor control center, is increasingly recognized for its roles in non-motor functions.
- Emerging evidence suggests cerebellar involvement in cognition, emotion, and autonomic regulation.
Purpose of the Study:
- To investigate the role of cerebellar Purkinje neurons in thirst regulation.
- To identify the molecular mechanisms underlying asprosin-mediated thirst signaling in the cerebellum.
Main Methods:
- Utilized optogenetic and chemogenetic techniques in mice to manipulate Purkinje neuron activity.
- Investigated the effects of asprosin hormone and its receptor (Ptprd) on water intake.
- Assessed motor learning and coordination to differentiate cerebellar functions.
Main Results:
- Cerebellar Purkinje neurons are activated by asprosin, leading to increased thirst and water drinking.
- Deletion of the asprosin receptor (Ptprd) in Purkinje neurons reduced water intake and abolished asprosin's dipsogenic effect.
- Cerebellar motor functions remained unaffected, indicating distinct roles for Purkinje neurons.
Conclusions:
- The cerebellum functions as a critical thirst-modulating brain region.
- Asprosin-Purkinje neuron signaling represents a novel pathway for thirst regulation.
- The asprosin-Ptprd pathway is a potential therapeutic target for thirst disorders.
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