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Publications (3)9.74 Total impact

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    ABSTRACT: Thirteen behavioral variables from six tasks were measured in alcohol-preferring (AA, FH, and P) and -nonpreferring (ANA, FRL, and NP) rat lines/strains and subjected to Factor Analysis. Four Independent factors accounted for > 90% of the variance. Defecation in the open field and ultrasonic vocalizations after an air puff were negatively correlated with alcohol intake and preference, whereas the increase in daily fluid intake in the presence of saccharin was positively correlated. Other factors could be labeled Activity, Emotionality, and immobility Factors, and each was independent of the Alcohol Factor. When an additional alcohol-preferring rat line (HAD) and two additional nonpreferring groups (LAD and ACI) were tested, they were found to differ on most behaviors that were associated with alcohol intake and preference in the Factor Analysis; vocalizations and saccharin-induced increase in fluid intake, but not defection. A new Factor Analysis was then performed incorporating these three new groups and including five new behavioral measures. The following measures had high loadings on the Alcohol Factor: alcohol intake under choice conditions; alcohol preference; forced alcohol intake; alcohol acceptance (forced alcohol intake/basal water intake x 100); ultrasonic vocalization; saccharin intake; saccharin-induced increase in daily fluid intake; defecation in the open field test; and immobility in a modified forced swim test. These findings indicate that there are indeed certain behavioral characteristics that are common among alcohol-preferring rat lines/strains, but there are also substantial group differences on other behavioral measures. For those behavioral measures reflecting emotionality (defecation and ultrasonic vocalization) that loaded highly on the Alcohol Factor, the alcohol-preferring rats had lower scores.
    Alcoholism Clinical and Experimental Research 08/1997; 21(5):840-8. · 3.42 Impact Factor
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    ABSTRACT: Previous reports have provided mixed results about emotional states in rats that voluntarily drink substantial amounts of alcohol. The purpose of the present study was to compare several strains of alcohol-preferring rats (P, AA, FH) with several strains of alcohol-nonpreferring rats (NP, ANA, FRL), and the Maudsley strains on tests reflecting anxiety and immobility. At about 70 days of age the rats were placed in the elevated plus maze for a 5-min test; a forced swim test of 10 min was given 4 days later and this test was followed 4 days later by a modified forced swim test (the capsule), in which there were four false escape alleys. The FRL rats spent more time in the open arms of the elevated plus maze than any other strain, but there was no consistent relationship between elevated plus maze scores and alcohol intake. The alcohol-preferring P rats were the most active in the standard forced swim test and the alcohol-nonpreferring Maudsley Reactive rats were the least active, but there was no consistent relationship between immobility and alcohol intake overall. All rats were much more active in the capsule and there were no significant strain differences. However, the alcohol-preferring P and FH rats attempted to escape more than the other strains, resulting in an overall significant correlation between escape attempts and alcohol intake. These findings do not provide any support for the hypothesis that alcohol-preferring rats are drinking alcohol to reduce high anxiety states.
    Physiology & Behavior 06/1995; 57(5):937-41. · 3.16 Impact Factor
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    ABSTRACT: High open field activity has been associated with high alcohol intake in inbred mouse strains. The present study sought to determine if a similar relationship might exist in rats. Strains which voluntarily drink large amounts of alcohol (alcohol-preferring [P], alcohol-accepting [AA], Fawn-Hooded [FH]) or little or no alcohol (alcohol-nonpreferring [NP], alcohol-nonaccepting [ANA], Flinders Resistant Line [FRL]) were compared with the Maudsley strains of rats selectively bred for differences in open field defecation and activity. There were highly significant strain differences in open field activity, with the alcohol-preferring P rats exhibiting the highest activity and the alcohol-nonpreferring Maudsley Reactive rats exhibiting the lowest. However, the NP rats were almost as active as the P rats and the AA and ANA rats exhibited intermediate levels of activity which did not differ from each other. Thus, there was no consistent relationship between open field activity and high voluntary alcohol intake. Defecation was highest in the Maudsley Reactive rats, and there was a consistent negative relationship with alcohol intake (r = -0.455 across all strains). In a population of 57 FHxFRL F2 hybrids, there were no significant correlations between alcohol intake and open field activity (r = -0.01) or defecation (r = +0.12). We conclude, therefore, that there was no consistent relationship between voluntary alcohol intake and open field behavior across strains of rats.
    Physiology & Behavior 04/1995; 57(3):585-9. · 3.16 Impact Factor