Volume 109, Issue 2 , Pages 106-112, February 2010
Is the Blood Donated by Habitual Nut Quid Chewers Suitable for Use in Transfusion?
Article Outline
Background/Purpose
Betel quid (BQ) chewing is a popular oral masticatory activity, and there are approximately 600 million BQ chewers worldwide. Although chewing BQ has been linked to the patho-genesis of oral cancer, leukoplakia, and oral submucous fibrosis. The question whether the mixed constituents present in areca nut, which may exert cytotoxic effects on red blood cells (RBCs), has never been addressed.
Methods
Heparinized blood specimens were obtained with informed consent from healthy laboratory personnel. RBCs were separated with the standard procedure and adjusted to 10% hematocrit with PBS. Various concentrations of areca nut extract (ANE; 100–800 μg/mL) were added to these RBC preparations and incubated at 37°C for 4 hours. Two portions (0.4 mL each) of the incubated RBCs were then used for measuring osmotic deformability index and for observing RBC morphology with scanning electron microscopy. The remaining RBCs were used for determining membrane sulfhydryl groups and protein profiles by sodium dodecyl sulfate polyacrylamide gel electrophoresis.
Results
Blood incubated with various concentrations of ANE showed concentration-dependent decreases in osmotic deformability index and membrane sulfhydryl groups. Membrane protein profiles revealed a significant loss of the band 3 fraction, with the concomitant appearance of several new protein bands in the electropheretogram. Finally, drastic morphological changes of ANE-treated RBCs were observed.
Conclusion
We suggest that to assure the quality of transfusion, the blood donated by a habitual BQ chewer should be used with caution because of its possible contamination with areca nut ingredients that may be cytotoxic to RBCs.
Key Words: areca , blood transfusion , mastication , oxidative stress , reactive oxygen species
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PII: S0929-6646(10)60030-7
doi:10.1016/S0929-6646(10)60030-7
© 2010 Formosan Medical Association & Elsevier. Published by Elsevier Inc. All rights reserved.
Volume 109, Issue 2 , Pages 106-112, February 2010
