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The dark phase improves genetic discrimination for some high throughput mouse behavioral phenotyping
S M Hossain1, B K Y Wong, E M Simpson
1Centre for Molecular Medicine and Therapeutics, British Columbia Research Institute for Children's & Women's Health, Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada.
Genes, Brain, and Behavior
|May 14, 2004
Summary
Dark-phase testing enhances behavioral tests for genetically distinct mice. This approach improves strain discrimination in high-throughput screening, offering superior outcomes for most tests.
Area of Science:
- Neuroscience
- Behavioral Science
- Genetics
Background:
- Dark-phase testing is known to improve classical behavioral tests.
- Its impact on high-throughput behavioral testing for genetic discrimination is less understood.
Purpose of the Study:
- To investigate the effect of dark-phase testing on high-throughput behavioral tests.
- To determine if dark-phase testing improves genetic discrimination between mouse strains.
Main Methods:
- High-throughput behavioral tests were conducted on C57BL/6J, 129S1/SvImJ, and B6129F1 mice.
- Testing was performed during both light and dark phases to compare outcomes.
- Key tests included SHIRPA primary screen, open-field, rotarod, social interaction, and tail-flick tests.
Main Results:
- Dark-phase testing improved strain discrimination in the SHIRPA primary screen, open-field test, and rotarod motor learning.
- The social interaction test showed no clear phase-dependent benefit.
- The tail-flick test demonstrated better strain discrimination during the light phase.
Conclusions:
- Dark-phase testing generally improves or maintains strain discrimination in high-throughput behavioral tests for these mouse strains.
- This suggests dark-phase testing is a superior approach for genetic screening using these methods.
- Light-phase testing is recommended only if dark-phase testing fails to achieve discrimination.