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  • Title: Intracerebroventricularly administered atrial natriuretric peptide (ANP) antiserum attenuates fear-motivated learning behavior in rats.
    Author: Bidzseranova A, Gueron J, Baláspiri L, Telegdy G.
    Journal: Peptides; 1992; 13(5):957-60. PubMed ID: 1480519.
    Abstract:
    Previous studies have demonstrated that rANP(1-28) administered into the lateral cerebroventricle facilitates consolidation of the passive avoidance response and delays extinction of the active avoidance response in fear-motivated learning in rats. To study the role of endogenous ANP in the same learning processes, the effects of different dilutions of ANP antiserum were investigated following their intracerebroventricular administration to rats. At dilutions of 1:40 and 1:60, the ANP antiserum attenuated consolidation of the passive avoidance response. It also facilitated extinction of the active avoidance response at a dilution of 1:2. The results suggest that endogenous ANP might be considered a modulating agent in the brain, and is involved in the learning processes and memory trace formation, since intracerebroventricularly administered antiserum against ANP attenuated fear-motivated learning behavior in the experimental animals.
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