Effect of atrial natriuretic peptide on apomorphine-induced stereotyped cage-climbing behavior in mice

The action of ANP, BNP and related peptides on motivated behavior in rats

This review summarizes the action of atrial natriuretic (ANP) and some related compounds such as BNP, CNP and fragments on the central nervous system, based mainly on the results obtained in the author's laboratory. The aim of the investigations was to assess the physiological significance of the natriuretic peptide family in the brain by administering the peptides into the lateral brain ventricle. Effects were studied on motivated behavior, including active and passive avoidance learning, food-reinforced conditioning, open-field activity, electroshock-induced amnesia, development of morphine tolerance and dependence, and picrotoxin-kindled seizure syndrome. Antisera against ANP were used in order to follow the specificity of the resulting action. The role of neurotransmitters in the mediation of peptide action was elucidated by treating the animals with receptor blockers before peptide administration.

Effect of atrial natriuretic peptide on dopa potentiation in mice

The effect of rat atrial natriuretic peptide (ANP1-28) on the pargyline-DOPA potentiation test was studied following its administration into the lateral brain ventricle in mice. Thirty minutes after pargyline pretreatment, three doses of ANP (200, 500, or 1,000 ng/mouse) were administered simultaneously with DOPA and animals were then observed for 2 h. ANP in doses of 500 and 1,000 ng markedly enhanced the effect of DOPA. The maximum intensity of the effect was registered 30-45 min following administration of the peptide. The data suggest that ANP might be regarded as a dopaminergic-modulating agent in the CNS.