Sex differences of leukocyte-platelet interactions and on-treatment platelet reactivity in patients with atherosclerosis.
Atherosclerosis 2014;
237:692-5. [PMID:
25463107 DOI:
10.1016/j.atherosclerosis.2014.10.095]
[Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 09/30/2014] [Accepted: 10/21/2014] [Indexed: 11/22/2022]
Abstract
OBJECTIVE
To investigate differences of platelet activation and on-treatment residual platelet reactivity between female and male patients with atherosclerotic cardiovascular disease.
METHODS
We compared P-selectin expression, activated glycoprotein (GP) IIb/IIIa and leukocyte-platelet aggregates (LPA) by flow cytometry between 110 female and 206 male patients undergoing angioplasty and stenting. On-treatment residual platelet reactivity was determined by two test systems.
RESULTS
The expression of P-selectin and GPIIb/IIIa did not differ significantly between female and male patients. In contrast, females showed a significantly more pronounced formation of LPA in vivo, in response to thrombin receptor-activating peptide-6 and in response to adenosine diphosphate. Further, high LPA were seen more frequently in female patients. Finally, protease-activated receptor (PAR)-1 mediated platelet reactivity by both assays was significantly higher in females.
CONCLUSION
Female sex is associated with a more pronounced formation of LPA and increased PAR-1 mediated platelet reactivity in atherosclerotic cardiovascular disease.
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