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The efficacy of heroin metabolites for the stimulation of mu opioid receptor-mediated G-protein activation was investigated using agonist-stimulated [(35)S]guanosine-5'-O-(gamma-thio)-triphosphate binding. In rat thalamic membranes, heroin and its primary metabolite, 6-monoacetylmorphine (6-MAM), were more efficacious than morphine or morphine-6-beta(More)
Foam cells in the atherosclerotic lesion have substantial cholesterol stores within large, swollen lysosomes. This feature is mimicked by incubating THP-1 macrophages with mildly oxidized low density lipoprotein (LDL). Incubation of THP-1 cells with acetylated LDL produces cytoplasmic cholesteryl ester accumulation rather than lysosomal storage. The(More)
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