Hypoxanthine, xanthine, urate and creatinine concentration gradients in cerebrospinal fluid - PubMed (original) (raw)
Hypoxanthine, xanthine, urate and creatinine concentration gradients in cerebrospinal fluid
F Niklasson et al. Ups J Med Sci. 1988.
Abstract
The purine metabolites hypoxanthine, xanthine and urate as well as creatinine were measured in cerebrospinal fluid (CSF) from two groups of patients and a reference sample group. In one of the patient groups lumbar CSF was collected in 2 ml portions until a total volume of 14 ml was withdrawn. Every second portion was analysed for its content of the metabolites in focus. In the other patient group both cisternal CSF and a fixed volume (20 ml) of lumbar CSF were obtained and analysed. An increase in concentration of hypoxanthine, xanthine and creatinine and a decrease in urate concentration was found in the successive CSF specimens. The mean individual increase in hypoxanthine concentration between the first and the last 2 ml portion was as high as 39.6%, while it was lower for xanthine, 21.5%, and creatinine, 6.7%. The decrease in urate concentration was 17.2%. The results from the other patient group were in good agreement with these findings. The concentrations in the cisternal CSF was 162% of that in lumbar CSF for hypoxanthine, 155% for xanthine, 123% for creatinine and 80% for urate. Mechanisms behind inter- and intraindividual differences in gradients are discussed.
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