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Increased platelet Fc receptor expression as a potential contributing cause of platelet hypersensitivity to collagen in diabetes mellitus

  • David C. Calverley
  • , Michele R. Hacker
  • , Kimberly A. Loda
  • , Elizabeth Brass
  • , Thomas A. Buchanan
  • , Denice D. Tsao-Wei
  • , Susan Groshen

Research output: Contribution to journalArticlepeer-review

Abstract

Recent clinical and laboratory observations support a potential role for the platelet FcγRIIA receptor (FcR) in collagen-mediated platelet activation associated with arterial thrombosis. Stable age- and sex-independent variation in receptor expression exists. Flow cytometry showed that 100 diabetes patients had increased mean platelet FcR expression levels compared with 201 non-diabetes patients (P < 0.001). Aggregation studies following FcR cross-linking supported a receptor role in increased activation of diabetes platelets after collagen stimulation (P = 0.018). Immunoprecipitation of collagen-stimulated and FcR-crosslinked platelets demonstrated enhanced levels of tyrosine-phosphorylated Syk in diabetic platelets. Increased platelet FcR-mediated sensitivity to collagen may contribute to cardiovascular morbidity and mortality in diabetes.

Original languageEnglish (US)
Pages (from-to)139-142
Number of pages4
JournalBritish Journal of Haematology
Volume121
Issue number1
DOIs
StatePublished - Apr 1 2003
Externally publishedYes

Funding

FundersFunder number
National Institute of Health-National Cancer InstituteP30CA014089

    Keywords

    • Blood platelets
    • Cardiovascular disease
    • Collagen
    • Diabetes mellitus
    • Fc
    • Receptors

    ASJC Scopus subject areas

    • Hematology

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