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Orienteering as a Tool for Cognitive Research: An Implementation Guide

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Published on: November 29, 2024

The aging hippocampus: interactions between exercise, depression, and BDNF.

Kirk I Erickson¹, Destiny L Miller, Kathryn A Roecklein

¹Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA. kiericks@pitt.edu

The Neuroscientist : a Review Journal Bringing Neurobiology, Neurology and Psychiatry

|May 3, 2011

Summary

This summary is machine-generated.

Brain-derived neurotrophic factor (BDNF) decline is linked to age-related memory loss and hippocampal atrophy. Aerobic exercise may help improve brain function and reduce depression by increasing BDNF levels.

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Area of Science:

Neuroscience
Gerontology
Genetics

Background:

Late adulthood commonly features hippocampal atrophy and dysfunction.
Brain-derived neurotrophic factor (BDNF) plays a crucial role in neuronal health and plasticity.
Age-related changes in BDNF signaling are implicated in cognitive decline.

Purpose of the Study:

To review the evidence linking BDNF to age-related hippocampal atrophy and memory impairment.
To explore the potential of BDNF modulation as a strategy for preventing cognitive decline.

Main Methods:

Review of existing literature on BDNF, aging, hippocampal function, and memory.
Analysis of studies investigating BDNF gene polymorphisms (e.g., val66met).
Examination of research on BDNF protein expression in rodents and human serum/plasma.

Main Results:

Decreased BDNF levels correlate with hippocampal dysfunction, memory impairment, and increased depression risk.
Aerobic exercise shows potential to mitigate hippocampal atrophy and improve memory by boosting BDNF.
The BDNF val66met polymorphism's association with hippocampal atrophy in late adulthood appears weak.

Conclusions:

BDNF is strongly implicated in age-related hippocampal dysfunction and memory deficits.
Interventions that increase BDNF, such as aerobic exercise, may offer protective benefits against cognitive aging.
Further research is needed to fully elucidate BDNF's role and therapeutic potential in preventing hippocampal atrophy.