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Hypocretin modulation of drug-induced synaptic plasticity
Corey Baimel1, Stephanie L Borgland
1Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC, Canada.
Progress in Brain Research
|July 21, 2012
Summary
Hypocretin (hcrt) in the ventral tegmental area (VTA) modulates drug-related behaviors by enhancing N-methyl-D-aspartate receptors on dopamine neurons, influencing motivated behaviors.
Area of Science:
- Neuroscience
- Molecular Psychiatry
Background:
- The ventral tegmental area (VTA) is crucial for drug addiction behaviors.
- Hypocretin (hcrt), also known as orexin, is a neuropeptide acting in the VTA.
Purpose of the Study:
- To review the role of VTA hypocretin in modulating drug abuse behaviors.
- To examine the cellular mechanisms of hcrt action in the VTA.
Main Methods:
- Literature review of studies on hypocretin and VTA.
- Analysis of cellular effects of hcrt on VTA neurons.
Main Results:
- VTA hypocretin potentiates N-methyl-D-aspartate receptors.
- Hcrt facilitates drug-induced plasticity in VTA neurons.
- Hcrt directly targets VTA dopamine neurons.
Conclusions:
- Hcrt action in the VTA is central to motivated behaviors.
- Modulation of excitatory synaptic activity by hcrt is key.
- Hcrt plays a significant role in drug addiction pathways.
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