NDLI: The Neurobiology of Addiction: Where We Have Been and Where We Are Going

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The Neurobiology of Addiction: Where We Have Been and Where We Are Going

Content Provider	PubMed Central
Author	Koob, George F. Simon, Eric J.
Abstract	A number of dramatic breakthroughs in the neurobiology of addiction have occurred in the past 40 years. Two domains will be highlighted: the neurocircuitry of addiction and the molecular biology of addiction targets. The neurobiological substrates for the reinforcing effects of drugs of abuse have been largely identified both at the initial site of action and in the circuitry involved. In human imaging studies, decreases in dopaminergic function have been identified as a key element of addiction, lending support for research on the role of dopamine in addiction. Three novel areas currently are emerging: the role of deficits in frontal cortex functioning, changes in the brain neurocircuitry that convey long-term vulnerability to relapse, and the role of nondopaminergic systems in the neuroadaptations associated with the development of drug dependence. Parallel to these functional changes have been major advances in our understanding of the molecular biology of addiction; the greatest contribution has been in the understanding of the molecular mechanisms of opioid action. This paper reviews the major developments in our understanding of the molecular biology of the endogenous opioid system and the use of genomics to advance our knowledge of the function and regulation of opioid receptors and endorphins.
Starting Page	115
File Format	PDF
ISSN	00220426
Journal	Journal of drug issues
Issue Number	1
Volume Number	39
Language	English
Publisher Date	2009-01-01
Access Restriction	Open
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Health (social science) Public Health, Environmental and Occupational Health Psychiatry and Mental Health

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