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Effects on Cerebral Amino Acids and Energy Metabolism

Alan H. Lockwood, MD

Arch Neurol. 1975;32(1):62-64.

Abstract
Acute and chronic elevations in osmolality were induced in rats and mice. After 48 and 96 hours of hyperosmolality, rat brain glutamine concentration increased to between 210% and 230% of control. This increase may account for 20% of the previously postulated idiogenic osmols that enable the brain to resist volume changes. Cerebral metabolic rates were reduced in the brains of mice made acutely and chronically hyperosmotic in spite of normal levels of adenosine triphosphate and phosphocreatine.

Author Affiliations
From the Department of Neurology, University of California, San Francisco. Dr. Lockwood is now with the Department of Neurology, Cornell University Medical College, New York.

Footnotes
Accepted for publication Sept 3, 1974.

Reprint requests to Department of Neurology, Cornell University Medical College, 1300 York Ave, New York, NY 10021 (Dr. Lockwood).

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