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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Concentration gradients for HVA, 5-HIAA, ascorbic acid, and uric acid in cerebrospinal fluid.

Concentrations of HVA, 5-HIAA, ascorbic acid, and uric acid in the lumbar and cisternal cerebrospinal fluid (CSF) were measured in psychiatric and neurologically impaired patients. The concentration of HVA is 6.1 times and of 5-HIAA 2.7 times higher in cisternal than in lumbar samples, the cisternal level of uric acid is half that of the lumbar region, but no significant differences were found in ascorbic acid concentrations. Correlation between lumbar and cisternal metabolite concentrations is high for 5-HIAA and ascorbic acid, and is less for HVA and uric acid. In cisternal CSF there is a significant correlation between levels of HVA-5-HIAA, 5-HIAA-ascorbic acid, and 5-HIAA-uric acid. These correlations disappear in lumbar CSF. These findings indicate that extrapolations to cisternal neurotransmitter metabolite concentration from lumbar measures are unwarranted for HVA, but not for 5-HIAA.[1]

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