Barbara Bednarczyk

Learn More
Clonidine depresses "motivated" but stimulates "basal" locomotor activity of normal rats. It does not affect the "dopaminergic", but inhibits "noradrenergic" locomotor stimulation produced by intraventricularly administered L-dopa methyl ester to nialamide-pretreated rats, although it does not affect the brain norepinephrine accumulation observed after(More)
We describe a receptor assay of digoxin activity involving Na+/K+-ATPase (EC derived from human heart tissue. The procedure requires 500 microL of serum or plasma and incorporates one purification step, with Sep-Pak C18 cartridges (Waters). The method appears to be considerably more specific for digoxin and its cardio-active metabolites than are(More)
Mice of C57BL/6 (C57), Balb/c (BALB), and CD-1 (CD) strains were injected with 3-chlorophenylpiperazine (CPP), 1–10 mg/kg ip, and their exploratory and basal locomotor activities and acquisition of conditioned avoidance response in a shuttle-box were tested. In C57 mice CPP did not affect either locomotor activity or shuttle-box performance. In BALB mice(More)
Dopaminergic agents, dopa and apomorphine, affected biphasically the blood eosinophil count in the rat: low doses of the drug elevated, while high doses lowered it. The response to a high dose of dopa was retained in rats pretreated with an inhibitor of dopamine-beta-hydroxylase, U 10, 157, but prevented by a centrally acting dopa decarboxylase inhibitor,(More)
An antagonist of morphine analgesia, N-cyclopropylmethylnorazidomorphine (CAM) inhibited the"wet shakes" appearing during spontaneous or nalorphine-precipitated morphine abstinence. CAM inhibited the pinna reflex more strongly than did morphine and selectively antagonized quipazine-induced head twitches; its inhibition of head twitches induced by(More)
  • 1