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CSF putrescine levels. The enzymatic-isotopic method vs liquid chromatography
Archives of Neurology
|February 1, 1981
Summary
Investigating putrescine levels in cerebrospinal fluid (CSF) revealed enzymatic-isotopic methods underestimate total putrescine. Free putrescine levels, not total, may be more relevant for detecting central nervous system (CNS) cancers.
Area of Science:
- Biochemistry
- Analytical Chemistry
- Neuro-oncology
Background:
- Cerebrospinal fluid (CSF) putrescine levels are potential biomarkers.
- Accurate quantification of putrescine and its metabolites is crucial for biomarker validation.
Purpose of the Study:
- To compare putrescine quantification in CSF using fluorometry and an enzymatic-isotopic method.
- To assess the clinical relevance of free versus total putrescine levels as biomarkers for central nervous system (CNS) malignant neoplasms.
Main Methods:
- Assay of 26 CSF samples for putrescine content.
- Utilized fluorometry with column chromatography for total and free putrescine.
- Employed enzymatic-isotopic methods for comparison.
Main Results:
- Enzymatic-isotopic method correlated well with free putrescine but underestimated total putrescine.
- Monoacetylputrescine and other metabolites account for approximately 40% of total putrescine.
- Significant discrepancies exist between free and total putrescine measurements.
Conclusions:
- The enzymatic-isotopic method may not accurately reflect total putrescine in CSF due to metabolites.
- Further research is needed to determine if free putrescine levels are superior to total levels for detecting CNS malignant neoplasms.