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A Simple Way to Measure Alterations in Reward-seeking Behavior Using Drosophila melanogaster
Published on: December 15, 2016
Sexual deprivation increases ethanol intake in Drosophila
G Shohat-Ophir1, K R Kaun, R Azanchi
1Department of Anatomy, University of California, San Francisco, CA 94143-2822, USA. shohatophirg@janelia.hhmi.org
Science (New York, N.Y.)
|March 17, 2012
Summary
Fruit flies show that sexual experience influences neuropeptide F (NPF) levels, affecting ethanol preference. Activating the NPF system can be rewarding, even blocking ethanol
Area of Science:
- Neuroscience
- Behavioral Biology
- Addiction Research
Background:
- The brain's reward systems are crucial for survival behaviors like feeding, reproduction, and social interaction.
- Drugs of abuse hijack these pathways, leading to addiction.
- Understanding the interplay between natural and drug rewards is key to addiction research.
Purpose of the Study:
- To investigate the relationship between natural rewards (mating) and drug rewards (ethanol) using Drosophila melanogaster.
- To explore the role of the neuropeptide F (NPF) system in mediating reward behaviors.
- To determine if NPF system activity influences ethanol consumption and preference.
Main Methods:
- Utilized Drosophila melanogaster as a model organism.
- Measured neuropeptide F (NPF) levels in male flies following mating or sexual deprivation.
- Manipulated NPF system activity (activation/inhibition) to assess its effect on ethanol preference.
- Investigated the rewarding properties of artificial NPF neuron activation.
Main Results:
- Mating increased NPF levels in male flies, while sexual deprivation decreased them.
- Modulating NPF system activity directly altered ethanol preference.
- Artificial activation of NPF neurons was inherently rewarding.
- Activated NPF neurons reduced or abolished ethanol's rewarding effects.
Conclusions:
- Sexual experience modulates NPF system activity, which in turn influences ethanol consumption.
- The NPF-NPF receptor axis activity reflects the fly's reward system state.
- This axis plays a significant role in modifying behaviors related to natural and drug rewards.
