Taste reactivity to alcohol and basic tastes in outbred mice

Area of Science:

• Neuroscience
• Behavioral Science
• Pharmacology

Background:

• Understanding taste perception and reactivity is crucial for various research areas, including addiction and sensory processing.
• Previous taste reactivity studies have primarily focused on rats, leaving a gap in knowledge regarding mouse responses.

Purpose of the Study:

• To characterize the taste reactivity responses of outbred mice to a range of orally infused taste solutions.
• To establish a baseline for comparing mouse taste reactivity with existing rat data.
• To provide a foundation for future studies on taste factors in genetically modified mouse models.

Main Methods:

• Utilized the taste reactivity test to assess mouse responses to orally infused solutions.
• Tested groups of mice with varying concentrations of alcohol (3-40%), sucrose (0.01-1.0 M), sodium chloride, hydrochloric acid, and quinine hydrochloride.
• Recorded behavioral responses such as forelimb flailing and gaping.

Main Results:

• Mice displayed similar reactivity patterns across most tested solutions, with forelimb flailing and gaping being predominant responses.
• Aversive responses were generally low, with minimal fluid rejection.
• Mice exhibited significantly fewer aversive responses to sucrose compared to other taste stimuli.
• Ingestive behaviors increased with higher concentrations of both alcohol and sucrose.
• Aversive responses decreased specifically with increasing sucrose concentrations.

Conclusions:

• This study provides the first comprehensive data on taste reactivity responses in mice to orally infused solutions.
• The findings highlight differential responses to sucrose and alcohol, with a clear preference for higher concentrations of both.
• The established methodology and data serve as a valuable reference for future research involving mouse taste perception and behavior.