Activation of the nigrostriatal dopaminergic pathway by injection of cholera enterotoxin into the substantia nigra.
Twenty-four hours after unilateral injection of cholera enterotoxin into the rat substantia nigra there is an increase, in the striatum on the injected side, of basal adenylate cyclase activity, 3,4-dihydroxyphenylacetic acid, and 3-methoxy-4-hydroxyphenylacetic acid. Moreover, there is an increase of motor activity, and rats tend to circle contralateral to the side of the injection. Injection of cholera enterotoxin into brain nuclei may be a useful procedure for pharmacologically activating selected neuronal systems of brain and for studying the pharmacology of drugs that are suspected of interacting with these systems.
D015102:3,4-Dihydroxyphenylacetic Acid / Q000378:metabolism; D000262:Adenylyl Cyclases / Q000378:metabolism; D000818:Animals; D003342:Corpus Striatum / Q000187:drug effects*; D004298:Dopamine / Q000378:metabolism / Q000494:pharmacology; D004768:Enterotoxins / Q000494:pharmacology*; D004789:Enzyme Activation; D006719:Homovanillic Acid / Q000378:metabolism; D008297:Male; D009043:Motor Activity / Q000187:drug effects; D009434:Neural Pathways; D051381:Rats; D013378:Substantia Nigra / Q000187:drug effects*; D014734:Vibrio cholerae
D004768:Enterotoxins; D015102:3,4-Dihydroxyphenylacetic Acid; D000262:Adenylyl Cyclases; D004298:Dopamine; D006719:Homovanillic Acid