Related Experiment Video
Updated: Jun 8, 2026
09:09
Elevated Plus Maze for Mice
Published on: December 22, 2008
Lower anxiety and a decrease in agonistic behaviour in Lsamp-deficient mice
Jürgen Innos1, Mari-Anne Philips, Este Leidmaa
1Department of Physiology, University of Tartu, Tartu, Estonia. jurgen.innos@gmail.com
Behavioural Brain Research
|October 5, 2010
Summary
Mice lacking the Lsamp gene show reduced anxiety and altered social behaviors, suggesting a potential model for studying psychiatric disorders. This research offers insights into the genetic underpinnings of social behavior and anxiety.
Area of Science:
- Neuroscience
- Genetics
- Behavioral Science
Background:
- The Lsamp gene in rodents is linked to anxiety and fear responses.
- Human genetic studies associate the LSAMP gene with psychiatric disorders.
Purpose of the Study:
- To characterize the phenotype of Lsamp gene-deficient mice.
- To investigate the role of Lsamp in anxiety and social behavior.
Main Methods:
- Generation of Lsamp gene-deficient mouse line by deleting exon 1b.
- Phenotypic analysis including sensory-motor, memory, learning, anxiety, and social behavior tests.
Main Results:
- Lsamp-deficient mice showed normal sensory-motor function, memory, and learning.
- Increased activity in novel environments, reduced anxiety, and altered social behaviors (less aggression, dominance, whisker trimming).
- Potential shift in Gabra1/Gabra2 gene balance favoring Gabra2 transcript.
Conclusions:
- Lsamp deficiency results in an anxiolytic-like effect and social behavior deficits.
- Lsamp-deficient mice serve as a valuable model for studying molecular mechanisms of social behavior alterations in psychiatric disorders.
