alexa Little change in cerebrospinal fluid amino acids in subtypes of multiple sclerosis compared with acute polyradiculoneuropathy.


Journal of Clinical & Cellular Immunology

Author(s): Grseth M, White LR, Aasly J

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Abstract Levels of free amino acids were determined in randomised, blinded samples of cerebrospinal fluid (CSF) from patients with relapsing-remitting or chronic progressive multiple sclerosis (MS), all in the active phase of disease. The levels were compared with amino acid amounts in patients with an acute polyradiculoneuropathy (Guillain-Barré syndrome (GBS)) and a control population of patients with no known neurological disease or deficit. The data did not indicate any significant changes in amino acid levels between MS subgroups. The only significant differences between MS patients and controls were a modest reduction in glutamate and a slight increase in taurine, but the changes were so small that the biological relevance is dubious. These results contrasted with the marked increases for many amino acids in CSF from patients with acute polyradiculoneuropathy compared with controls. The amino acid profile in cerebrospinal fluid (CSF) does not appear to provide evidence of differential pathology in multiple sclerosis (MS). The increase in hydrophobic amino acids and lysine in CSF from patients with acute polyradiculoneuropathy is consistent with transudation over the blood-CSF barrier following an infection. The increases in glutamine and alanine may reflect increased nitrogen removal from brain.
This article was published in Neurochem Int and referenced in Journal of Clinical & Cellular Immunology

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