Platelets induce thymic stromal lymphopoietin production by endothelial cells: Contribution to human systemic sclerosis fibrosis

Author: Marie-Elise Truchetet MD-PhD1, Béatrice Demoures, Jorge E. Guimaraes, Anne Bertrand, Paôline Laurent1, Valérie Jolivel1, et al
Date Published: July-2016
Source: Arthritis & Rheumatology

Objective To investigate the relationship between vascular damage and fibrosis in systemic sclerosis (SSc), we tested the hypothesis that platelets contribute to skin fibrosis via the activation of dermal microvascular endothelial cells and subsequent production of pro-fibrotic mediators.

Methods A total of 203 SSc patients and 30 healthy donors (HDs) were prospectively enrolled between 2012 and 2015 at the University Hospital of Bordeaux. Immunohistochemistry and immunofluorescence analyses were performed on skin biopsies from 18 SSc patients and 5 HDs. Serum TSLP levels were measured (ELISA) in the entire cohort. Human dermal microvascular endothelial cells and fibroblasts were purified from biopsies. Extracellular matrix production by cultured fibroblasts was assessed by RT-qPCR.