Failure of Ro15-4513 to alter an ethanol-induced taste aversion

June, Harry L.; June, Pamela L.; Domangue, Kevin R.; Hicks, Leslie; Lummis, Guy; Lewis, Michael J.

doi:10.1016/0091-3057(92)90126-z

Cited by 9 publications

(1 citation statement)

References 26 publications

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“…Further, the magnitude of the pre-exposure effect was dependent upon the number of injections given during pre-exposure. Subsequent to this initial demonstration, a host of compounds such as amphetamine (Cappell & LeBlanc, 1971), morphine (Domjan & Siegel, 1983), cocaine (Glowa & Williams, 1992), ethanol (June et al, 1992), and LiCl (Braveman, 1975(Braveman, , 1978(Braveman, , 1979 have been reported to attenuate taste avoidance when given prior to conditioning with these same drugs, although animals without the drug history display robust suppression of consumption (for reviews, see Randich & LoLordo, 1979;Riley & Simpson, 2001).…”

Section: Introductionmentioning

confidence: 99%

Adolescent rats fail to demonstrate a LiCl-induced pre-exposure effect: Implications for the balance of drug reward and aversion in adolescence

2016

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Adolescents display weaker taste avoidance induced by both abused and non-abused drugs than adults. Drug history attenuates avoidance learning in adults (the drug pre-exposure effect), but little is known about this phenomenon in adolescents. Given that the weaker taste avoidance in adolescence is thought to be a function of their relative insensitivity to the drug's aversive effects, it might be expected that the drug pre-exposure effect would be weaker in adolescents given that for some drugs this effect is mediated by associative blocking that depends on the association of environmental cues with the drug's aversive effects. To address this, in the present studies male adolescent (Experiment 1) and adult (Experiment 2) rats were given five spaced injections of LiCl prior to subsequent taste avoidance conditioning with LiCl. Consistent with past reports, adolescents displayed weaker taste avoidance than adults. While adults displayed attenuated LiCl-induced taste avoidance following LiCl preexposure, adolescents showed no evidence of this pre-exposure. This work is consistent with the view that adolescents are relatively insensitive to the aversive effects of drugs, an insensitivity potentially important in subsequent intake of drugs of abuse given that such intake is a function of the balance of their rewarding and aversive effects.

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