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- W2892028585 abstract "Opioid receptors are implicated in alcoholism, other addictions, withdrawal, and depression, and are considered potential pharmacological targets for treatment. Our goal in the present study was to compare the availability of kappa opioid receptors (KOR) between an alcohol-dependent cohort (AD) and a healthy control cohort (HC). Sixty-four participants-36 AD and 28 HC-underwent PET scans with [11C]LY2795050, a selective kappa antagonist tracer. Partial-volume correction was applied to all PET data to correct for atrophy. Volume of distribution (VT) of the tracer was estimated regionally as a measure of KOR availability. VT values of AD versus HC were compared for 15 defined ROIs. Multivariate analysis showed a main effect of group on VT across these 15 ROIs. Post hoc tests showed that AD had significantly lower VT and thus a lower KOR availability than HC in amygdala and pallidum (corrected for multiple comparisons). Exploratory analysis of change in VT with age was conducted; VT was not found to vary significantly with age in any region. Our findings of lower VT in AD versus HC in multiple regions are in contrast to findings in the mu and delta opioid receptor systems of higher VT in AD versus HC. Although age-related decline in receptors has previously been observed in the mu opioid receptor system, we found that KOR availability does not change with age." @default.
- W2892028585 created "2018-09-27" @default.
- W2892028585 creator A5003324009 @default.
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- W2892028585 date "2018-09-06" @default.
- W2892028585 modified "2023-10-18" @default.
- W2892028585 title "PET imaging reveals lower kappa opioid receptor availability in alcoholics but no effect of age" @default.
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- W2892028585 doi "https://doi.org/10.1038/s41386-018-0199-1" @default.
- W2892028585 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6224533" @default.
- W2892028585 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30188515" @default.
- W2892028585 hasPublicationYear "2018" @default.
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