Resistance towards calcium induced bilirubin dependent hemolysis in porcine erythrocytes |
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| Authors: | Boh Boon Kim Saad Tayyab |
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| Institution: | (1) Biomolecular Research Group, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia |
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| Abstract: | Hemolysis of erythrocytes from human and porcine blood was studied at different calcium chloride (CaCl2) concentrations (0.04–1.83 mM) and at a constant bilirubin concentration (72 mM). Although, human erythrocytes showed significant
hemolysis (64%) at the highest CaCl2 concentration (1.83 mM) used in this study, remarkable resistance to this phenomenon was observed with porcine erythrocytes
as only 11% hemolysis was observed. A similar pattern in the behavior of both human and porcine erythrocytes was observed
when parameter such as bilirubin concentration or time of incubation with bilirubin was varied. Other divalent cations such
as Mn2+, Ba2+ and Mg2+ were either least effective or ineffective in inducing hemolysis in presence of bilirubin. Serum albumin played a protective
role in this phenomenon in a concentration dependent manner, as no hemolysis was observed at a bilirubin/albumin molar ratio
of 1:1 or less. Differences in the structural make-up of proteins and lipids in the erythrocyte membranes of the two species
may account for their different behavior. |
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| Keywords: | Bilirubin Calcium Erythrocytes Hemolysis Human Mammalian species Porcine Serum albumin |
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