NCT02636127

Role of Circulating Cytotoxic Lymphocytes in Endothelial Cell Injury in Systemic Sclerosis

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 30 (actual)
• Sponsor: Assistance Publique Hopitaux De Marseille · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

Systemic Sclerosis (SSc) is an auto-immune systemic disease characterized by vascular damage, cutaneous and visceral fibrosis and a dysimmune condition. Therapies in this disease remain insufficient and the complications resulting from organs involvement lead to strong morbi-mortality.The dermic infiltrate of the patients includes a strong proportion of Tcells. T cells and Natural Killer (NK) cells are potentially involved in the vascular damage of the SSc. However mechanisms at the onset of this endothelial cytotoxicity and its impact on the capacities of regeneration of the endothelial tissue remain poorly understood. Fractalkine is at the same time an endothelial membrane-bound adhesion molecule and a chemokine which is able to bind CX3CR1 expressed by the immune populations. The purpose of the project is to define the role displayed by cytotoxic, circulating immune populations of SSc patients in endothelial cytotoxicity as well as the role of the axis Fractalkine / CX3CR1 in mediating the interactions between the immune cytotoxic cells and the endothelium.

Conditions

• Scleroderma, Systemic

Interventions

Type	Name	Description
OTHER	blood samples	one blood sample will be done for dosage and role of Fractalkine in the serum. \- Functional study of the interactions between T cells and NK cells and / endothelial cells (HMVEC): immuno mediated endothelial cytotoxicity, endothelial activation and microparticles release by the HMVEC, endothelial progenitor cells analysis and evaluation of the endothelial lysis by fluorescence release.

Timeline

• Start date: 2015-12-07
• Primary completion: 2016-07-21
• Completion: 2018-07-08
• First posted: 2015-12-21
• Last updated: 2018-09-06

Locations

1 site across 1 country: France