Related Experiment Video
Updated: Sep 9, 2026
Barnes Maze Testing Strategies with Small and Large Rodent Models
Published on: February 26, 2014
Disruption of estrogen receptor beta gene impairs spatial learning in female mice
Emilie F Rissman1, Amy L Heck, Julie E Leonard
1Department of Biology and Internal Medicine, University of Virginia, Charlottesville, VA 22903, USA. efr2@virginia.edu
Abstract:
Here we provide the first evidence, to our knowledge, that estradiol (E(2)) affects learning and memory via the newly discovered estrogen receptor beta (ERbeta). In this study, ERbeta knockout (ERbetaKO) and wild-type littermates were tested for spatial learning in the Morris water maze after ovariectomy, appropriate control treatment, or one of two physiological doses of E(2). Regardless of treatment, all wild-type females displayed significant learning. However, ERbetaKOs given the low dose of E(2) were delayed in learning acquisition, and ERbetaKOs administered the higher dose of E(2) failed to learn the task. These data show that ERbeta is required for optimal spatial learning and may have implications for hormone replacement therapy in women.
Insights
Estradiol (E(2)) impacts learning and memory through estrogen receptor beta (ERbeta). ERbeta knockout mice show impaired spatial learning, highlighting ERbeta
Area of Science:
- Neuroscience
- Endocrinology
- Molecular Biology
Background:
- Estradiol (E(2)) is a key hormone influencing cognitive functions.
- Estrogen receptor beta (ERbeta) is a recently identified receptor for E(2).
- The specific role of ERbeta in learning and memory remains largely unexplored.
Purpose of the Study:
- To investigate the role of ERbeta in estradiol-mediated learning and memory.
- To determine if ERbeta is essential for spatial learning.
- To explore the implications for hormone replacement therapy.
Main Methods:
- Utilized ERbeta knockout (ERbetaKO) and wild-type littermate mice.
- Ovariectomy was performed followed by administration of control or physiological doses of E(2).
- Spatial learning was assessed using the Morris water maze task.
Main Results:
- Wild-type mice demonstrated significant learning regardless of treatment.
- ERbetaKO mice receiving a low dose of E(2) showed delayed learning acquisition.
- ERbetaKO mice receiving a higher dose of E(2) failed to learn the task.
Conclusions:
- ERbeta is crucial for optimal spatial learning and memory.
- These findings suggest ERbeta mediates the effects of E(2) on cognition.
- The results have potential implications for hormone replacement therapy in women.
