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Basic Science and Pathogenesis.

Danique Zantinge¹, Luna Hall¹, Luisa Epifani¹

¹University of Groningen, Groningen, Groningen, Netherlands.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association

|December 24, 2025

Summary

This summary is machine-generated.

Female sex is a significant risk factor for Alzheimer's Disease (AD). This study investigates sex differences in cognitive decline onset using a mouse model, predicting earlier impairment in females.

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Area of Science:

Neuroscience
Alzheimer's Disease Research
Sex Differences in Biology

Background:

Female sex is a major biological risk factor for Alzheimer's Disease (AD), characterized by higher lifetime risk and accelerated cognitive decline.
Underrepresentation of females in preclinical AD studies creates knowledge gaps regarding genetic and hormonal influences on AD risk.
Inconsistent findings in existing AD mouse models necessitate validation of methodologies for assessing sex-specific cognitive and pathological differences.

Purpose of the Study:

To identify sex differences in the onset of hippocampus-dependent cognitive impairments in a mouse model of Alzheimer's Disease.
To establish the utility of touchscreen tasks for assessing sex-specific cognitive decline in AD research.
To lay the groundwork for understanding sex-specific mechanisms underlying AD progression.

Main Methods:

Utilizing the Bussey-Saksida touchscreen system for daily training of 3-month-old mice.
Assessing spatial memory monthly using the Location-Discrimination (LD) task.
Validating memory function through Object Location Memory tests for long-term memory assessment.

Main Results:

Preliminary study, results are pending.
Anticipated demonstration of sex differences in cognitive impairment onset using touchscreen tasks.
Expected criterion performance at 4-5 months, followed by cognitive decline, with females predicted to decline earlier than males.

Conclusions:

The study aims to establish sex differences in the age of onset for cognitive decline in an AD mouse model.
Findings will advance understanding of sex-specific AD progression and underlying mechanisms.
This research will inform future studies on sex-specific AD pathogenesis and therapeutic targets.