Increased circulating platelet-leucocyte complexes in patients with primary Raynaud's phenomenon and Raynaud's phenomenon secondary to systemic sclerosis
Küçük Resim Yok
Tarih
2007
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Lippincott Williams & Wilkins
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Platelet activation and circulating platelet-leucocyte complexes increase in vascular ischemic events and autoimmune inflammatory diseases. Platelet activation markers and platelet-leucocyte complexes were evaluated in primary Raynaud's phenomenon (RP) and in RP secondary to systemic sclerosis (SSc). Whole-blood flow cytometry was utilized to quantify CD62P, platelet microparticles (PMP), platelet-monocyte complexes (PMC) and platelet- neutrophil complexes (PNC) in primary RP and in SSc patients with secondary RP. SSc patients with secondary RP had significantly higher platelet CD62P expression than primary RP patients and controls (P= 0.017 and 0.004, respectively). Primary and secondary RP patients had higher mean PMC and PNC levels than controls (all P <= 0.001). PMP level in SSc patients with pulmonary hypertension was significantly higher than in others (P= 0.048). All parameters were similar in SSc patients with and without digital ulcers, aspirin-users and nonusers (P > 0.05). CD62P level decreased significantly after iloprost administration in four patients with digital ulcers (116.+/- 17.4 vs 7.4 +/- 3.8%, P= 0.03). Our results suggest there is platelet- leucocyte complex formation in RP, and, despite antithrombotic therapy, platelet activation and platelet-leucocyte interaction are ongoing in SSc. This is important as it might have potential therapeutic implications with respect to using antiplatelet drugs in SSc.
Açıklama
Anahtar Kelimeler
Platelet Activation, Platelet Microparticles, Platelet-Monocyte Complexes, Platelet-Neutrophil Complexes, Platelet P-Selectin, Raynaud's Phenomenon, Systemic Sclerosis, Whole-Blood, Rheumatoid-Arthritis, Activation, Microparticles, Binding, Aggregation, Expression, Selectin, Markers
Kaynak
Blood Coagulation & Fibrinolysis
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
18
Sayı
4
