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  • Title: Taste preferences in rat lines selected for low and high alcohol consumption.
    Author: Sinclair JD, Kampov-Polevoy A, Stewart R, Li TK.
    Journal: Alcohol; 1992; 9(2):155-60. PubMed ID: 1599627.
    Abstract:
    Alcohol-avoiding (ANA), alcohol-preferring (AA), and control Wistar rats were tested sequentially for their initial preferences for single concentration solutions of quinine, saccharin, salt, and citric acid, and then for an ascending series of saccharin concentrations. A similar study was subsequently conducted with the alcohol-nonpreferring (NP) and alcohol-preferring (P) rat lines. Both lines developed for low alcohol consumption drank much less saccharin than their respective lines developed for high alcohol intake when tested with the single concentration and with the ascending series. The ANAs also generally drank less of the bitter, salty, and sour solutions than the AAs or Wistars but little difference was found between the NPs and Ps with the other tastes. The curve relating saccharin consumption to concentration reached a maximum at about the same concentrations for AAs, Wistars, NPs, and Ps but for the ANAs, was shifted to the left. The results support a close relationship between the genetic factors influencing alcohol and saccharin intake in both line pairs. This relationship is probably not caused by saccharin tasting like alcohol to a rat, because other results indicate that the NPs do not have more negative reactions initially to the taste of alcohol, but it might be related to similar mechanisms mediating the reinforcement from sweet tastes and from systemic alcohol.
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