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Lipid peroxidation in cerebral tumors
Bayram Cirak1, Servet Inci, Selcuk Palaoglu
1Department of Neurosurgery, Johns Hopkins University Hospital, Baltimore, MD, USA. bayramcirak@yahoo.com
Clinica Chimica Acta; International Journal of Clinical Chemistry
|December 17, 2002
Summary
Free oxygen radicals (FORs), measured as malondialdehyde (MDA), show elevated levels in CNS tumors. Both serum and tissue MDA concentrations can help detect the presence and grade of brain tumors.
Area of Science:
- Neuro-oncology
- Biomarker Discovery
- Oxidative Stress Research
Background:
- Current central nervous system (CNS) disease markers lack sensitivity and specificity for definitive diagnosis.
- Distinguishing malignant from benign CNS lesions is critical for treatment and prognosis.
- Free oxygen radicals (FORs) are implicated in oncogenesis and cellular differentiation.
Purpose of the Study:
- To investigate the diagnostic potential of free oxygen radicals (FORs) as tumor markers in CNS diseases.
- To evaluate malondialdehyde (MDA) concentrations in serum and tumor tissue for CNS tumor detection and grading.
Main Methods:
- Measured serum and tissue malondialdehyde (MDA) concentrations.
- Studied patients with malignant glial tumors (grades III-IV astrocytoma), low-grade glial tumors, healthy individuals, and non-tumorous epilepsy lesions.
Main Results:
- Elevated serum MDA levels were observed in CNS tumor patients compared to controls.
- Tumor tissue MDA concentrations were higher than in non-tumorous tissue.
- Higher serum and tissue MDA levels correlated with higher tumor malignancy grade.
Conclusions:
- Serum and tissue FOR concentrations (MDA) can serve as markers for CNS tumor presence and grade.
- These markers are not entirely specific but aid in detection.
- Further research is required to establish optimal cutoff values for MDA in brain tumor diagnostics.