Pharmacological Modulation of Alcohol Tolerance via GABA-B receptors in Drosophila melanogaster

Conference poster

Ranson, D., Ayoub, S., Corcoran, O. and Casalotti, S. 2018. Pharmacological Modulation of Alcohol Tolerance via GABA-B receptors in Drosophila melanogaster. 11th FENS Forum of Neuroscience. Berlin, Germany 07 - 11 Jul 2018
AuthorsRanson, D., Ayoub, S., Corcoran, O. and Casalotti, S.
TypeConference poster
Abstract

Aims: Ethanol induced behaviours are mediated via the GABA-B receptor, but mechanisms remain unclear. Drosophila melanogaster respond to alcohol by developing addiction-like behaviours such as changes to ethanol sensitivity (tolerance). The aim of this study was to determine the effect of GABA-B receptor drugs on the development of alcohol tolerance in male adult Drosophila to further elucidate the role of GABA-B receptors.

Methods: The GABA-B receptor agonist (SKF-97451) and antagonist (CGP-54626) were administered orally for 24h before a three-day assay to challenge ethanol tolerance in wild type and GABA-B receptor mutant flies. ST50, defined as 50% of flies sedated from ethanol exposure, was used as a measure of sensitivity on each day. Results are n=6 with 10 flies per assay.

Results: Both agonist and antagonist increased the ST50 in WT and GABA-B R1 KO when compared to control. Notably, the GABA-B R2 KO did not respond to either agonist or antagonist and differed significantly from the R1 KO and WT response suggesting a complex mechanism of action.

Conclusion: The data provides evidence that the GABA-B receptors are involved in modulating the process of ethanol tolerance in Drosophila melanogaster. Further work with different mutant flies and drug delivery protocols will probe the role of these receptors in alcohol addiction.

Year2018
Conference11th FENS Forum of Neuroscience
Publication process dates
Deposited17 Jul 2018
Completed08 Jul 2018
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