Cognitive performance of the MAM-E17 schizophrenia model rats in different age-periods.

Cognitive performance of the MAM-E17 schizophrenia model rats in different age-periods. Behav Brain Res. 2019 Nov 05;:112345 Authors: Kállai V, Lénárd L, Péczely L, Gálosi R, Dusa D, Tóth A, László K, Kertes E, Kovács A, Zagoracz O, Berta B, Karádi Z, Ollmann T Abstract Cognitive disturbances are among the most important features of schizophrenia, and have a significant role in the outcome of the disease. However, the treatment of cognitive symptoms is poorly effective. In order to develop new therapeutic opportunities, the MAM-E17 rat model of schizophrenia can be an appropriate implement. In the present study we investigated several cognitive capabilities of MAM-treated rats using radial arm maze (RAM) task, which corresponds to the recent research directives. Because of the diachronic appearance of schizophrenia symptoms and the early appearance of cognitive deficiencies, we carried out our experiments in three different age-periods of rats, i.e. in prepuberty, late puberty and adulthood. The performance of MAM-E17 rats was similar to control rats in the acquisition phase of RAM task, except for puberty. However, after rearrangement of reward positions (in the reverse paradigm) the number of errors of MAM-treated rats was higher in each age-period. In the reverse paradigm MAM-treated groups visited more frequently those non-rewarding arms, which were previously rewarding. Our results suggest that working memory of MAM-E1...
Source: Behavioural Brain Research - Category: Neurology Authors: Tags: Behav Brain Res Source Type: research