title: Effects of substance P on acetylcholinesterase activity.
abstract: The effects of substance P on acetylcholinesterase activity have been examined. The neuropeptide produced a significant increase in the activity of the enzyme in rat cerebral cortex. Pretreatment of rats with either actinomycin-D or cycloheximide did not fully abolish the substance P-mediated stimulation of cerebral acetylcholinesterase. Substance P increased the enzyme activity in rat brain slices; moreover, substance P increased the activity of electric eel acetylcholinesterase in in vitro experiments. These observations indicate that substance P produces an induction of acetylcholinesterase in cerebral cortex of rats and in addition indicate that a direct action on the enzyme takes place.
mesh_terms: D000110:Acetylcholinesterase / Q000378:metabolism*; D000818:Animals; D002540:Cerebral Cortex / Q000187:drug effects / Q000201:enzymology*; D003513:Cycloheximide / Q000494:pharmacology; D003609:Dactinomycin / Q000494:pharmacology; D004557:Electric Organ / Q000201:enzymology; D004593:Electrophorus; D007700:Kinetics; D008297:Male; D051381:Rats; D013373:Substance P / Q000494:pharmacology*
chemical_list: D003609:Dactinomycin; D013373:Substance P; D003513:Cycloheximide; D000110:Acetylcholinesterase