Expression proteaseinhibitors receptor PAR-2 on neutrophils peripheral blood of patients with atopic dermatitis and their relation with heat shock proteins HSP90

Abstract

Expression ofprotease-activated receptors PAR-2 has been investigated on neutrophils isolated from atopic dermatitis patient peripheral blood and has been analyzed with index SCORAD. The simultaneous expression of both, PAR-2 receptors and heat shock protein 90 (HSP90) was measured on neutrophils at the first week of acute phase of atopic dermatitis. Methods. Peripheral blood neutrophils were isolated on the Percoll gradient. Cells were stained with antibodies to PAR-2 receptor and HSP90 followed by the flow cytometry. Results. The PAR-2 receptors have been shown to be expressed on the plasma membrane of neutrophils obtained from patients with atopic dermatitis. The percentage of PAR-2+ neutrophils was positive correlated with diseases severity. HSP90 was found to be elevated simultaneously with PAR-2 receptors on neutrophils at the acute phase of atopic relapse. Conclusions. Atopic dermatitis patients have the higher level of PAR-2 receptor expression compared with healthy donors. Percentage of PAR-2+ neutrophils is elevated with the increasing of disease severity. Simultaneous elevation of PAR-2 receptors and HSP90 was found at the first week of acute atopic dermatitis.