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- W2015244524 abstract "The mu opioid receptor system is altered in alcohol dependent (AD) subjects. Cortisol responses to opioid receptor antagonists are assumed to impart information about opioid receptor activity. In the present study we examined naloxone-induced cortisol responses in 18 healthy control (HC) and 25 recently detoxified AD subjects and then correlated the cortisol response with mu opioid receptor availability across 15 brain regions using positron emission tomography (PET) and the mu opioid receptor selective ligand [(11)C] Carfentanil (CFN). On average the AD subjects required twice the dose of naloxone to induce a peak cortisol response compared to the HC subjects. Using the rising slope of the cortisol curve (placebo to peak) as a metric we then went on to examine the relationship between cortisol responses to naloxone and [(11)C]CFN BP(ND). There were significant negative relationships between cortisol and [(11)C]CFN binding potential (BP(ND)) in multiple brain regions of HC subjects. However, cortisol responses did not correlate with [(11)C]CFN BP(ND) across any brain region in AD subjects. In summary, naloxone imparts information about individual differences in mu opioid receptor availability throughout the mesolimbic system in healthy individuals. However pathways governing the relationship between naloxone-induced cortisol and mu opioid receptor availability are disrupted during early abstinence in AD subjects." @default.
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- W2015244524 date "2012-09-01" @default.
- W2015244524 modified "2023-10-16" @default.
- W2015244524 title "The relationship between naloxone-induced cortisol and mu opioid receptor availability in mesolimbic structures is disrupted in alcohol dependent subjects" @default.
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- W2015244524 doi "https://doi.org/10.1016/j.alcohol.2012.04.006" @default.
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