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csu1199991110.pdf (1.89 MB)

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Role of CD36 in Platelet Function

Arunima, Ghosh
http://rave.ohiolink.edu/etdc/view?acc_num=csu1199991110

Abstract Details

2007, Doctor of Philosophy in Regulatory Biology, Cleveland State University, College of Science.
CD36 is a scavenger receptor expressed on a wide variety of cells including platelets. It recognizes multiple ligands, yet its function on platelets is incompletely characterized. Endothelial cell-derived microparticles (EMP) have been identified in diseases where platelet activation plays a pivotal role. Because EMP express phosphatidylserine (PS) on their surfaces, a CD36 ligand, we hypothesized that MP may bind to platelets via a PS-CD36 interaction. Human platelets were shown to bind EMP by flow cytometry and fluorescence microscopy. Binding was significantly inhibited by anti-CD36 antibody or using platelets from CD36 null donors. We observed a significant increase in the rate and extent of platelet activation and aggregation to low concentrations of ADP when preincubated with EMP. We thus propose a model where ligands such as EMPs, generated during an acute thrombotic event, could increase the thrombotic response in a CD36 dependent manner. We also showed that CD36 expression levels on platelets were highly variable and correlated well with platelet activation by oxidized LDL. Genotyping with 10 tagged SNPs revealed that the minor alleles of 3 SNPs were significantly associated with expression levels. These data suggest that the variability of CD36 expression on platelets is at least in part genetically determined and together this phenotype-genotype can affect platelet function.
Roy Silverstein (Advisor)
145 p.
CD 36; CD36-SNP's; platelets; microparticles; platelet activation; CSD36 on platelets

Recommended Citations

Citations

  • Arunima, G. (2007). Role of CD36 in Platelet Function [Doctoral dissertation, Cleveland State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=csu1199991110

    APA Style (7th edition)

  • Arunima, Ghosh. Role of CD36 in Platelet Function. 2007. Cleveland State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=csu1199991110.

    MLA Style (8th edition)

  • Arunima, Ghosh. "Role of CD36 in Platelet Function." Doctoral dissertation, Cleveland State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=csu1199991110

    Chicago Manual of Style (17th edition)

csu1199991110
1,658
© 2007, all rights reserved.
This open access ETD is published by Cleveland State University and OhioLINK.