Células endoteliales y micropartículas circulantes en pacientes portadores de anticuerpos antifosfolípidos / Circulating endothelial cells and microparticles in patients with antiphospholipid antibodies

Fundamento y objetivo: Determinar si los valores de células endoteliales circulantes (CEC), micropartículas circulantes (MP) y factor von Willebrand (FvW), marcadores establecidos de disfunción/daño endotelial, están elevados en pacientes portadores de anticuerpos antifosfolípidos (AAF) y si existe correlación con marcadores de inflamación y coagulación. Pacientes y método: Se estudian 12 pacientes portadores de AAF y 12 sujetos sanos. Se determinaron CEC, MP, FvW, proteína C reactiva (PCR), fibrinógeno (Fg), ácido siálico (AS), interleucina 6, factor tisular (FT), generación de trombina (GT) y fragmentos de protrombina (F1+2) y de fibrina (DD). Resultados: En los pacientes están significativamente elevados los valores de los marcadores de: disfunción/daño endotelial (CEC, MP y FvW), inflamación (Fg y PCR) y coagulación (FT y DD). El análisis bivariante muestra correlación significativa entre CEC y Fg, AS, PCR y DD, así como entre CEC y FvW y MP. Conclusión: Los pacientes portadores de AAF presentan una disfunción endotelial asociada a un proceso inflamatorio, que, unido a los valores elevados de Fg, FT y DD, puede inducir un estado de hipercoagulabilidad (AU)

Background and objective: To determine whether circulating endothelial cells (CECs), circulatingmicroparticles (MPs) and von Willebrand factor (vWF), established markers of endothelial dysfunction/ damage, are elevated in patients with antiphospholipid antibodies (aPL) and its possible correlation with inflammation and coagulation. Patients and methods: Twelve atients with aPL and 12 healthy subjects were studied. Levels of CECs, MPs, vWF, C reactive protein (CRP), fibrinogen (Fg), sialic acid (SA), interleukin 6 (IL-6), tissue factor (TF), thrombin generation (TG) and prothrombin (F1 + 2) and fibrin (DD) fragments were determined. Results: In patients, markers of dysfunction/damage endothelial, CECs, MPs and vWF; inflammation, Fgand CRP and coagulation, TF and DD were significantly elevated. The bivariate analysis showedsignificant correlation among CECs and Fg, AS, CRP and DD, as well as between CECs and vWF and MPs.Conclusion: Patients with aPL had endothelial dysfunction associated with an inflammatory process,which, together with high levels of Fg, TF and DD, may be responsible for the hypercoagulable state (AU)

[Circulating endothelial cells and microparticles in patients with antiphospholipid antibodies]. / Células endoteliales y micropartículas circulantes en pacientes portadores de anticuerpos antifosfolípidos.

BACKGROUND AND OBJECTIVE: To determine whether circulating endothelial cells (CECs), circulating microparticles (MPs) and von Willebrand factor (vWF), established markers of endothelial dysfunction/damage, are elevated in patients with antiphospholipid antibodies (aPL) and its possible correlation with inflammation and coagulation. PATIENTS AND METHODS: Twelve patients with aPL and 12 healthy subjects were studied. Levels of CECs, MPs, vWF, C reactive protein (CRP), fibrinogen (Fg), sialic acid (SA), interleukin 6 (IL-6), tissue factor (TF), thrombin generation (TG) and prothrombin (F1+2) and fibrin (DD) fragments were determined. RESULTS: In patients, markers of dysfunction/damage endothelial, CECs, MPs and vWF; inflammation, Fg and CRP and coagulation, TF and DD were significantly elevated. The bivariate analysis showed significant correlation among CECs and Fg, AS, CRP and DD, as well as between CECs and vWF and MPs. CONCLUSION: Patients with aPL had endothelial dysfunction associated with an inflammatory process, which, together with high levels of Fg, TF and DD, may be responsible for the hypercoagulable state.