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Effects of exercise on dopaminergic mechanisms of cocaine relapse

Award Number: R00DA047419
ORGANIZATION: NATIONAL INSTITUTE ON DRUG ABUSE
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)
PERIOD OF PERFORMANCE START DATE: 08/01/2019
PERIOD OF PERFORMANCE END DATE: 02/28/2025

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Effects of exercise on dopaminergic mechanisms of cocaine relapse - PROJECT SUMMARY Relapse to drug abuse is the single greatest challenge in addiction treatment. Relapse can occur even after prolonged abstinence and is often preceded by robust drug craving precipitated by exposure to drug-paired stimuli and environments. Aerobic exercise is a novel and promising behavioral treatment for drug addiction and relapse. However, the precise mechanism of its therapeutic effects is unknown. The long-term goal of this project is to characterize the striatal network dynamics that mediate the effects of exercise on addiction and relapse. The current aims of this proposal are to examine the impact of chronic wheel running on rapid subsecond dopamine release dynamics and dopamine terminal function as well as on the longitudinal development of phasic dopamine signals that promote cocaine-seeking behavior and on the recruitment of cell- type specific neural processing of cocaine seeking and cocaine-paired cues. It is hypothesized that chronic wheel running will (1) attenuate cocaine-evoked subsecond dopamine release in the striatum, (2) decrease striatal phasic dopaminergic signals accompanying cocaine-paired cues and cocaine seeking, and (3) attenuate D1-MSN and potentiate D2-MSN encoding of cocaine-paired cues and cocaine seeking. These experiments will employ a sophisticated mouse model of cocaine relapse, state-of-the-art in vivo fast-scan cyclic voltammetry recordings, in vivo multiple single-unit electrophysiological recordings, and chemogenetic and optogenetic technologies to examine these questions in behaving animals. The proposed experiments aim to increase our understanding of the neurobiological substrates that mediate drug craving and relapse and identify the neurochemical and neurophysiological mechanisms of the beneficial effects of exercise.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2024 ( Subtotal = $248,999 )
2024	2024	REGENTS OF THE UNIVERSITY OF CALIFORNIA AT RIVERSIDE	200 UNIVERSTY OFC BUILDING	RIVERSIDE	CA	92521	RIVERSIDE	USA	Drug Use and Addiction Research Programs	000	5	1/26/2024	NON-COMPETING CONTINUATION	$248,999
														Subtotal = $248,999

Issue Date FY: 2023 ( Subtotal = $248,999 )
2023	2023	REGENTS OF THE UNIVERSITY OF CALIFORNIA AT RIVERSIDE	200 UNIVERSTY OFC BUILDING	RIVERSIDE	CA	92521	RIVERSIDE	USA	Drug Use and Addiction Research Programs	000	4	1/26/2023	NON-COMPETING CONTINUATION	$248,999
														Subtotal = $248,999

Issue Date FY: 2022 ( Subtotal = $351,118 )
2022	2022	REGENTS OF THE UNIVERSITY OF CALIFORNIA AT RIVERSIDE	200 UNIVERSTY OFC BUILDING	RIVERSIDE	CA	92521	RIVERSIDE	USA	Drug Use and Addiction Research Programs	001	3	6/29/2022	EXTENSION WITH OR WITHOUT FUNDS	$102,119
2022	2022	REGENTS OF THE UNIVERSITY OF CALIFORNIA AT RIVERSIDE	900 UNIVERSITY AVE	RIVERSIDE	CA	92521	RIVERSIDE	USA	Drug Use and Addiction Research Programs	000	3	2/15/2022	EXTENSION WITH OR WITHOUT FUNDS	$248,999
														Subtotal = $351,118

Grand Total All Awards = $849,116

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Effects of exercise on dopaminergic mechanisms of cocaine relapse

Award Number: R00DA047419

ORGANIZATION: NATIONAL INSTITUTE ON DRUG ABUSE

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

PERIOD OF PERFORMANCE START DATE: 08/01/2019

PERIOD OF PERFORMANCE END DATE: 02/28/2025

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