Related Experiment Video
Updated: Jun 4, 2026
08:01
Intracerebroventricular Injection of Amyloid-β Peptides in Normal Mice to Acutely Induce Alzheimer-like Cognitive Deficits
Published on: March 16, 2016
Exercise Lowers Hepatic Amyloid β Concentrations in Alzheimer's Rodent Model.
Azam Zarnashan1, Fatemeh Fazli1, Vahid Talebi2
1Department of Sports Science, Faculty of Educational Sciences and Psychology, Azarbaijan Shahid Madani University, Tabriz, IRAN.
Medicine and Science in Sports and Exercise
|June 3, 2026
Summary
Voluntary exercise improved memory and reduced liver amyloid-beta (Aβ) in an Alzheimer
Area of Science:
- Neuroscience
- Gerontology
- Exercise Physiology
Background:
- Alzheimer's disease (AD) is characterized by amyloid-beta (Aβ) accumulation.
- Peripheral clearance mechanisms for Aβ are not fully understood.
- Investigating lifestyle interventions like exercise is crucial for AD management.
Purpose of the Study:
- To examine the impact of voluntary exercise on liver Aβ levels and serum LRP1 in a rat model of Alzheimer's disease.
- To assess the role of exercise in peripheral Aβ clearance.
Main Methods:
- Wistar rats were divided into control, AD, control + exercise, and AD + exercise groups.
- Alzheimer's disease was induced via intraventricular streptozotocin (STZ) injection.
- Exercise intervention involved 12 weeks of voluntary wheel running; cognitive function, serum LRP1, and liver Aβ40 were measured.
Main Results:
- Voluntary exercise significantly improved memory performance in the Morris Water Maze test for AD rats.
- Exercise led to a significant reduction in liver Aβ40 concentrations in AD rats.
- Serum LRP1 levels were not affected by exercise in either control or AD rats.
Conclusions:
- Voluntary wheel running may reduce hepatic Aβ40 in Alzheimer's disease models independently of circulating LRP1.
- Exercise shows potential as an intervention to aid Aβ40 clearance.
- Further research is warranted to elucidate the precise mechanisms of exercise-mediated Aβ clearance.
