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Effects of acute and chronic administration of exorphin C on behavior and learning in white rat pups

  • Yu. A. Belyaeva
  • V. A. Dubynin
  • I. S. Stovolosov
  • Yu. V. Dobryakova
  • Zh. D. Bespalova
  • A. A. Kamenskii
Article

Abstract

We studied the behavior of 21- and 35-day-old white rat pups in the “open field” and the learning of 36- to 41-day-old pups in a maze with food reinforcement. An opioid fragment of wheat gluten exorphin C (YPISL) was injected to pups chronically from day 1 to day 14 of their life or immediately prior to testing. We found that an acute peptide injection did not change animal behavior. The chronic intraperitoneal administration of the peptide at the same dose of 5 mg/kg significantly increased exploratory activity, decreased anxiety, and improved learning. Delayed exorphin C effects were more expressed in female rats.

Keywords

Open Field Sudden Infant Death Syndrome Naltrexone Exploratory Activity Food Reinforcement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Allerton Press, Inc. 2009

Authors and Affiliations

  • Yu. A. Belyaeva
    • 2
  • V. A. Dubynin
    • 2
  • I. S. Stovolosov
    • 2
  • Yu. V. Dobryakova
    • 2
  • Zh. D. Bespalova
    • 1
  • A. A. Kamenskii
    • 2
  1. 1.Department of Human and Animal Physiology, Faculty of BiologyMoscow State UniversityMoscowRussia
  2. 2.Russian Cardiology Research ComplexRosmedtekhnologiya, MoscowRussia

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