title: Adenylate cyclase in rat synaptosomal plasma membranes and caudate nucleus homogenate: effects of dopamine, E prostaglandins, guanyl-5'-yl-imidodiphosphate and morphine.
abstract: The adenylate cyclase in two particulate preparations from rat brain, a homogenate from caudate nucleus (CN-homogenate) and a synaptosomal plasma membrane fraction (SPM-fraction) from whole rat brain was investigated. Stimulation of the enzyme by dopamine and prostaglandins E1 and E2 was found in the CN-homogenate while only a weak prostaglandin E1 and E2 stimulation and no dopamine stimulation could be found in the SPM-fraction. Guanyl-5'-yl-imidophosphate (GppNHp) and NaF could stimulate the adenylate cyclase in both preparations. Morphine up to 10(-5) M altered neither the basal enzyme activity nor any of the stimulated enzyme activities.
mesh_terms: D000262:Adenylyl Cyclases / Q000378:metabolism*; D000818:Animals; D001921:Brain / Q000201:enzymology*; D002421:Caudate Nucleus / Q000201:enzymology*; D004298:Dopamine / Q000494:pharmacology; D004789:Enzyme Activation / Q000187:drug effects; D006165:Guanylyl Imidodiphosphate / Q000494:pharmacology; D066298:In Vitro Techniques; D008297:Male; D009020:Morphine / Q000494:pharmacology; D011458:Prostaglandins E / Q000494:pharmacology; D051381:Rats; D011919:Rats, Inbred Strains; D011957:Receptors, Opioid / Q000187:drug effects*; D013570:Synaptic Membranes / Q000201:enzymology*
chemical_list: D011458:Prostaglandins E; D011957:Receptors, Opioid; D006165:Guanylyl Imidodiphosphate; D009020:Morphine; D000262:Adenylyl Cyclases; D004298:Dopamine