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Circulating Glutamine and Alzheimer's Disease: A Mendelian Randomization Study.


ABSTRACT: Background:Alzheimer's disease is a devastating neurodegenerative disorder. Its worldwide prevalence is over 24 million and is expected to double by 2040. Finding ways to prevent its cognitive decline is urgent. Methods:A two-sample Mendelian randomization study was performed instrumenting glutamine, which is abundant in blood, capable of crossing the blood-brain barrier, and involved in a metabolic cycle with glutamate in the brain. Results:The results reveal a protective effect of circulating glutamine against Alzheimer's disease (inverse-variance weighted method, odds ratio per 1-standard deviation increase in circulating glutamine = 0.83; 95% CI 0.71, 0.97; P = 0.02). Conclusion:These findings lend credence to the emerging story supporting the modifiability of glutamine/glutamate metabolism for the prevention of cognitive decline. More circulating glutamine might mean that more substrate is available during times of stress, acting as a neuroprotectant. Modifications to exogenous glutamine may be worth exploring in future efforts to prevent and/or treat Alzheimer's disease.

SUBMITTER: Adams CD 

PROVIDER: S-EPMC7020919 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Circulating Glutamine and Alzheimer's Disease: A Mendelian Randomization Study.

Adams Charleen D CD  

Clinical interventions in aging 20200210


<h4>Background</h4>Alzheimer's disease is a devastating neurodegenerative disorder. Its worldwide prevalence is over 24 million and is expected to double by 2040. Finding ways to prevent its cognitive decline is urgent.<h4>Methods</h4>A two-sample Mendelian randomization study was performed instrumenting glutamine, which is abundant in blood, capable of crossing the blood-brain barrier, and involved in a metabolic cycle with glutamate in the brain.<h4>Results</h4>The results reveal a protective  ...[more]

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