Comparative analysis of RBC membrane lipids in thalassemia, and iron deficiency anemia in relation to hypochromia and oxidant injury |
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| Authors: | S P Sanghani V A Haldankar K K Shalia S K Bichlle |
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| Institution: | (1) Department of Biochemistry Mumbai Central, Topiwala National Medical College and B. Y. L. Nair Hospital, 40008 Mumbai;(2) Department Hematology Mumbai Central, Topiwala National Medical College and B. Y. L. Nair Hospital, 40008 Mumbai |
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| Abstract: | The effect of an intrinsic defect in the red cell and pronounced hypochromia on oxidative damage to RBC membrane lipids was
compared in beta-thalassemia and iron deficiency anemia (IDA), which have a varied etiology but equivalent low hemogiobin
content. The study was planned to correlate the etiology of the disorders to the severity of lipid imbalance and RBC hemolysis
in membranes of both the conditions. Results indicated a fall of lysophosphatidylcholine(LPC), phosphatidylethanolamine(PE)
and the unsaturated to saturated fatty acid ratio in both conditions, while phosphatidylcholine(PC) increased only in thalassemia.
However, irrespective of the disease, sphingomyelin(SM), total cholesterol and phospholipid levels elevated and the hydrogen
peroxide stress test indicated increased susceptibility of both pathologic RBCs to peroxidation. Present findings indicate
that IDA and thalassemla, allow for considerable amounts of oxidative damage to membrane lipids, irrespective of their etiologles,
and thus point hypochromia as an important contributor for inducing lipid imbalance and RBC hemolysis. |
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| Keywords: | Hypochromia intrinsic defect oxidation RBC membrane lipid imbalance |
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