Abstract
To compare the fatty acid composition of tumor tissue from glioma patients with that of normal brain tissue, tissue samples were obtained from 13 glioma patients and from 3 nonmalignant patients. Following lipid extraction, total fatty acid composition was measured using gas-liquid chromatography. Samples were further separated into phospholipids and neutral lipids. Representative samples were then separated into phospholipid classes by thin-layer chromatography and the fatty acid composition assayed. Levels of the polyunsaturated fatty acid (PUFA) docosahexaenoic acid (DHA), were significantly reduced (P=0.029) in the glioma samples compared with normal brain samples; mean values were 4.8±2.9% and 9.2±1.0%, respectively. This reduction in glioma DHA content was also observed in terms of phospholipids (4.6±2.1% vs. 9.6±0.8%,P=0.002). The phosphatidylserine and phosphatidylethanolamine phospholipid classes were reduced in the glioma samples. Differences were also noted in the n-6 PUFA content between glioma and normal brain samples. The glioma content of the n-6 PUFA linoleic acid was significantly greater (P<0.05) than that observed in the control samples in terms of total lipids. Thus, the fatty acid composition of human gliomas differs from that found in nonmalignant brain tissue.
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Abbreviations
- ALA:
-
α-linolenic acid
- CNS:
-
central nervous system
- DHA:
-
docosahexaenoic acid
- GBM:
-
glioblastoma multiforme
- GLC:
-
gas-liquid chromatography
- LA:
-
linoleic acid
- PC:
-
phosphatidylcholine
- PE:
-
phosphatidylethanolamine
- PI:
-
phosphatidylinositol
- PS:
-
phosphatidylserine
- PUFA:
-
polyunsaturated fatty acid
- UI:
-
unsaturation index
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Martin, D.D., Robbins, M.E.C., Spector, A.A. et al. The fatty acid composition of human gliomas differs from that found in nonmalignant brain tissue. Lipids 31, 1283–1288 (1996). https://doi.org/10.1007/BF02587914
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DOI: https://doi.org/10.1007/BF02587914