Anxiety and Stress. Animal models of 'anxiety'.

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  • IMAIZUMI Masahiro
    Laboratory of Nutrition Chemistry, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
  • ONODERA Kenji
    Department of Pharmacology School of Dentistry Tohoku University

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  • 不安とストレス　　‘不安’の動物モデル
  • フアン ノ ドウブツ モデル
  • 不安とストレス

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Abstract

Many animal models of anxiety have been reported;for example, Geller-type or Vogel-type anticonflict tests and ethologically based tests without punishment such as a light dark test, ahole-board test, a socialinteraction test, an elevated plus-maze test and so on.These models were pharmacologically validated by the evidence that clinically useful anxiolytic benzodiazepines were active, but activities of serotonergic anxiolytics in these models were inconsistent. These models might measure a mixture of several types of anxiety.Many disorders of anxiety are classified in the Diagnostic and Statistical Manual of Mental Disorders Fourth Edition (DSM-IV) and several disorders can not be treated with benzodiazepines very well.Animal models to evaluate the drugs for the benzodiazepine-untreatable disorders are needed.Graeffetal.performed studies to measure inhibitory avoidance latency from an enclosed arm to open arms and escape latency from the open arms to theenclosed arm as parameters of conditioned and unconditioned fears, respectively, in the elevated T-maze inrats.The latter was suggested for use in the evaluation of drugs effi-cacious on a panic disorder.Amarble burying test as an animal model for an obsessive-compulsive disor-der was also reported.However, establishment of the models for these disorders remains for future investigations.

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