mu-opioid receptor and alpha2-adrenoceptor agonist stimulation of [35S]GTPgammaS binding to G-proteins in postmortem brains of opioid addicts.


Repeated opioid administration has been associated in human brain with unaltered density of mu-opioid receptors (agonist radioligand binding sites and immunodetected receptor protein). These receptors are coupled to Gi/Go-proteins, which are increased in brain of heroin addicts. To assess the activity of G-proteins and their coupling to receptors after… (More)


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