Synapse-specific opioid modulation of thalamo-cortico-striatal circuits.

Autor:	Birdsong WT; Vollum Institute, Oregon Health & Science University, Portland, United States., Jongbloets BC; Vollum Institute, Oregon Health & Science University, Portland, United States., Engeln KA; Vollum Institute, Oregon Health & Science University, Portland, United States., Wang D; Department of Anesthesiology Perioperative and Pain Medicine, Stanford Neurosciences Institute, Stanford University, Stanford, United States.; Department of Molecular and Cellular Physiology, Stanford Neurosciences Institute, Stanford University, Stanford, United States.; Department of Neurosurgery, Stanford Neurosciences Institute, Stanford University, Stanford, United States., Scherrer G; Department of Anesthesiology Perioperative and Pain Medicine, Stanford Neurosciences Institute, Stanford University, Stanford, United States.; Department of Molecular and Cellular Physiology, Stanford Neurosciences Institute, Stanford University, Stanford, United States.; Department of Neurosurgery, Stanford Neurosciences Institute, Stanford University, Stanford, United States.; New York Stem Cell Foundation - Robertson Investigator, Stanford University, Palo Alto, United States., Mao T; Vollum Institute, Oregon Health & Science University, Portland, United States.
Jazyk:	angličtina
Zdroj:	ELife [Elife] 2019 May 17; Vol. 8. Date of Electronic Publication: 2019 May 17.
DOI:	10.7554/eLife.45146
Abstrakt:	The medial thalamus (MThal), anterior cingulate cortex (ACC) and striatum play important roles in affective-motivational pain processing and reward learning. Opioids affect both pain and reward through uncharacterized modulation of this circuitry. This study examined opioid actions on glutamate transmission between these brain regions in mouse. Mu-opioid receptor (MOR) agonists potently inhibited MThal inputs without affecting ACC inputs to individual striatal medium spiny neurons (MSNs). MOR activation also inhibited MThal inputs to the pyramidal neurons in the ACC. In contrast, delta-opioid receptor (DOR) agonists disinhibited ACC pyramidal neuron responses to MThal inputs by suppressing local feed-forward GABA signaling from parvalbumin-positive interneurons. As a result, DOR activation in the ACC facilitated poly-synaptic (thalamo-cortico-striatal) excitation of MSNs by MThal inputs. These results suggest that opioid effects on pain and reward may be shaped by the relative selectivity of opioid drugs to the specific circuit components. Competing Interests: WB, BJ, KE, DW, GS, TM No competing interests declared (© 2019, Birdsong et al.)
Databáze:	MEDLINE
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