In a group of 18 subjects with acute deep venous thrombosis (DVT), evidenced by clinical examination and echo-color-Doppler, we examined the phenotypical expression of the polymorphonuclear leukocyte (PMN) beta2-integrins (CD11a, CD11b, CD11c, CD18), obtained by using a flow cytofluorimeter. The evaluation was performed before and after in vitro activation (prolonged for 5 and 15 minutes) with 4-phorbol 12-myristate 13-acetate (PMA) and N-formyl-methionyl-leucyl-phenylalanine (fMLP). In DVT subjects, at baseline, the phenotypical expression of CD11b was decreased and that of CD11c was increased when compared with normal controls; no difference was found in CD11a and CD18 expression. In normal subjects PMN activation with both activators led to a constant increase of all PMN adhesion molecules; in DVT subjects CD11b, CD11c and CD18 increased, while CD11a expression did not show any change. These data indicate the presence of a functional alteration in circulating PMN cells from patients with DVT.
|Data di pubblicazione:||2005|
|Titolo:||Deep venous thrombosis: behaviour of the polymorphonuclear leukocyte integrin pattern at baseline and after in vitro activation|
|Autori:||CAIMI G; TOZZI CIANCARELLI MG; FERRARA F; MONTANA M; CALANDRINO V; CANINO B; LO PRESTI R|
|Tipologia:||Articolo su rivista|
|Citazione:||CAIMI G, TOZZI CIANCARELLI MG, FERRARA F, MONTANA M, CALANDRINO V, CANINO B, et al. (2005). Deep venous thrombosis: behaviour of the polymorphonuclear leukocyte integrin pattern at baseline and after in vitro activation. CLINICAL HEMORHEOLOGY AND MICROCIRCULATION, 33, 11-17.|
|Appare nelle tipologie:||01 - Articolo su rivista|