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A High-throughput Calcium-flux Assay to Study NMDA-receptors with Sensitivity to Glycine/D-serine and Glutamate

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NMDA receptor function, memory, and brain aging.

J W Newcomer¹, N B Farber, J W Olney

¹Departement of Psychiatry, Washington University School of Medicine, St Louis, Mo, USA.

Dialogues in Clinical Neuroscience

|October 29, 2011

Summary

This summary is machine-generated.

N-methyl-D-aspartate (NMDA) receptor hypofunction is linked to cognitive decline and brain injury, worsening with age and Alzheimer's disease. Interventions targeting NMDA receptor overstimulation may offer new Alzheimer's treatments.

Keywords:

Alzheimer's disease NMDA receptor NMDA receptor hypofunction brain aging memory

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Area of Science:

Neuroscience
Neurology
Pathophysiology

Background:

N-methyl-D-aspartate (NMDA) receptor hypofunction is implicated in cognitive impairments, psychosis, and excitotoxic brain injury.
Age-related decline in NMDA receptor function contributes to reduced memory and learning.
In Alzheimer's disease (AD) pathogenesis, amyloidopathy and oxidative stress exacerbate NMDA receptor hypofunction (NRHypo).

Purpose of the Study:

To explore the role of increasing NMDA receptor hypofunction in cognitive decline and neurodegeneration.
To investigate the interaction of aging and AD-specific pathologies in exacerbating NRHypo.
To propose potential therapeutic strategies targeting NMDA receptor overstimulation for AD prevention and treatment.

Main Methods:

Review and synthesis of existing research on NMDA receptor function in aging and Alzheimer's disease.
Hypothesizing the progression from NRHypo to severe neurodegeneration in vulnerable individuals.
Utilizing findings from an animal model of neuronal overstimulation.

Main Results:

Progressive hypofunction of the NMDA receptor system occurs with brain aging, impacting cognitive performance.
In individuals predisposed to AD, combined pathologies significantly increase the NRHypo burden.
Severe and persistent NRHypo states can precipitate widespread neurodegeneration and cognitive deterioration.

Conclusions:

NMDA receptor hypofunction is a critical factor in age-related cognitive decline and Alzheimer's disease progression.
Understanding the mechanisms of NRHypo is crucial for developing effective AD treatments.
Pharmacological interventions aimed at preventing corticolimbic pyramidal neuron overstimulation show promise for AD prevention and therapy.