6533b852fe1ef96bd12ab332
RESEARCH PRODUCT
Deep venous thrombosis: Behaviour of the polymorphonuclear leukocyte integrin pattern at baseline and after in vitro activation
Gregorio CaimiM. G. Tozzi CiancarelliF. FerraraM. MontanaV. CalandrinoB. CaninoR. Lo Prestisubject
AdultMaleVenous ThrombosisIntegrinsSettore MED/09 - Medicina InternaCD11 AntigensNeutrophilsDeep venous thrombosis; polymorphonuclear leukocyte integrins; polymorphonuclear leukocyte activationMiddle AgedFlow CytometryNeutrophil ActivationDeep venous thrombosis polymorphonuclear leukocyte integrins polymorphonuclear leukocyte activationpolymorphonuclear leukocyte integrinsGene Expression RegulationCD18 AntigensCase-Control StudiesDeep venous thrombosisHumansTetradecanoylphorbol AcetateFemalepolymorphonuclear leukocyte activationAgeddescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-07-23 |