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Alcohol and Alcoholism Vol. 36, No. 6, pp. 525-528, 2001
© 2001 Medical Council on Alcohol

NOVELTY-SEEKING BEHAVIOUR AND OPERANT ORAL ETHANOL SELF-ADMINISTRATION IN WISTAR RATS

Przemyslaw Bienkowski1,*, Eliza Koros1 and Wojciech Kostowski1,2

1 Department of Pharmacology and Physiology of the Nervous System, Institute of Psychiatry and Neurology, ul. Sobieskiego 1/9, PL-02957 Warsaw and
2 Department of Experimental and Clinical Pharmacology, Warsaw Medical University, PL-00527, Warsaw, Poland

Received 22 January 2001; first review notified 20 April 2001; accepted 25 May 2001

— The aim of the present study was to investigate the relationship between novelty-seeking behaviour and operant oral ethanol self-administration in Wistar rats. The open field and novel object test was used to assess novelty-seeking. Ethanol self-administration was initiated in an operant procedure where ethanol was introduced in the presence of sucrose. Eighteen out of 32 rats were successfully initiated to lever-press for 8% (v/v) ethanol. None of the parameters assessed in the open field (horizontal activity, rearings) or novel object test (number of contacts with an object, exploration time) differed between the initiated and non-initiated subjects. In addition, correlational analysis revealed that response to novelty did not predict individual differences in ethanol intake in the initiated rats. These results suggest that there is no relationship between novelty-seeking and operant ethanol self-administration in Wistar rats.


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