ovariectomized rats were pretreated with either alpha-methyl-p-tyrosine ( ampt ; tyrosine hydroxylase inhibitor ) , ampt plus threo-dihydroxyphenylserine ( dops ; norepinephrine precursor ) , diethyldithiocarbamate ( ddc ; dopamine-beta-hydroxylase inhibitor ) , pimozide ( dopaminergic receptor blocker ) , phenoxybenzamine ( alpha-adrenergic receptor blocker ) , propranolol ( beta-adrenergic receptor blocker ) , or their vehicles .
C0000378
dops
C0028351
norepinephrine