Neuronal ensembles of compulsive alcohol drinking
Neuronal ensembles of compulsive alcohol drinking
批准号:
10004549
负责人:
Olivier George
金额:
$35.45万
依托单位国家:
美国
项目类别:
财政年份:
2017
资助国家:
美国
项目状态:
已结题
起止时间:
2017-08-01 至 2022-07-31
关键词:
AcuteAddressAlcohol consumptionAlcohol dependenceAlcoholsAmygdaloid structureBehavior ControlBrainBrain regionCell NucleusChronicCorticotropin-Releasing HormoneDevelopmentEventFOS geneHeavy DrinkingHyperalgesiaHypothalamic structureImmediate-Early GenesInvestigationKnowledgeLacZ GenesLateralLeadLiteratureMediatingMethodsMotivationNeurobiologyNeuronsPainPathway interactionsPharmacogeneticsPharmacologyPhenotypePopulationRattusRoleSaccharinSelf AdministrationStructure of terminal stria nuclei of preoptic regionTechniquesTestingTimeTransgenic OrganismsWithdrawalalcohol exposureanxiety-like behaviordesignexperimental studyimprovednegative emotional stateneurobiological mechanismneuronal circuitrynoveloptogeneticsparabrachial nucleuspreventrecruittoolvapor
中文摘要
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英文摘要
Project Summary/Abstract
A key issue in the alcohol field is the lack of knowledge on the discreet neuronal ensembles that are
responsible for excessive alcohol drinking in alcohol-dependent subjects. This is a major obstacle for the
alcohol field because investigations of the neuronal ensembles that mediate excessive alcohol drinking would
provide a comprehensive understanding of the neuronal circuits that causally contribute to alcohol
dependence. The recent development of pharmacogenetic and optogenetic tools that allow selective targeting
of specific neuronal ensembles is a tremendous opportunity to bridge this gap in the literature. The central
hypothesis of this proposal is that activation of the parabrachial nucleus (PBN) and central nucleus of the
amygdala (CeA) during withdrawal is responsible for the recruitment of a set of discreet neuronal ensembles
that are scattered throughout the brain and ultimately responsible for excessive drinking and the emergence of
negative emotional states in dependent rats. We obtained robust preliminary results that show that selectively
targeting these neuronal ensembles produces long-lasting reversal of excessive alcohol drinking in dependent
rats, identifies a causal relationship between these ensembles, and reveals novel neuronal pathways that
contribute to alcohol dependence. Specific Aim 1 characterizes the role of the CeA and PBN withdrawal
neuronal ensembles in excessive alcohol drinking in dependent rats. Specific Aim 2 dissects the role of the
different CeA CRF pathways in the recruitment of the neuronal ensembles and excessive alcohol drinking in
alcohol dependence. Results from these studies have the potential to have a strong and lasting impact in the
field because our approach will improve our understanding of the neurobiological mechanisms of alcohol
dependence and identify novel neuronal populations and circuits that specifically control behaviors associated
with alcohol dependence.
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海外基金