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- W1969759218 abstract "Acute and chronic states of food deprivation result in increased sensitivity to a variety of natural reinforcers as well as to drugs of abuse. Food deprived animals show increased locomotor activity during periods of food deprivation, as well as increased locomotor stimulant responses to drugs of abuse, including cocaine, amphetamine, morphine, and ethanol, implying that drugs of abuse act in part on neural systems that underlie responses towards food. To determine whether this effect extends to an invertebrate, highly genetically tractable animal, the locomotor stimulant effects of low dose ethanol were assessed under a variety of feeding conditions in the fruit fly, Drosophila melanogaster. Food deprivation resulted in strain specific increases in ethanol-stimulated locomotor activity in most strains tested, although elevated baseline activity confounded interpretation in some strains. Experiments conducted with Canton S flies found that the effects of food deprivation on the locomotor stimulant response to ethanol increased with the duration of deprivation, and could be blocked by refeeding the flies with standard food or sucrose, but not yeast, immediately prior to the ethanol exposure. Life-span extending dietary depletion procedures or previous periods of food deprivation did not affect the response to ethanol, indicating that only animals in an acutely food deprived state are more sensitive to the stimulant effects of ethanol. These results suggest that increased sensitivity to the stimulant effects of some drugs of abuse might reflect an evolutionarily conserved neural mechanism that underlies behavioral responses to natural reinforcers and drugs of abuse. The identification of this mechanism, and the genes that underlie its development and function, will constitute a novel approach towards the study of alcohol abuse and dependence." @default.
- W1969759218 created "2016-06-24" @default.
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- W1969759218 date "2013-10-01" @default.
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- W1969759218 title "Food deprivation increases the low-dose locomotor stimulant response to ethanol in Drosophila melanogaster" @default.
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- W1969759218 doi "https://doi.org/10.1016/j.pbb.2013.08.010" @default.
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