It is a study of basic research with mechanistically objectives and including clinical biological samples.
Systemic sclerosis (SSc) is a rare and severe disease characterised by a fibrotic process and an incompletely elucidate physiopathology. Several shared featured have been identified between SSc and another autoimmune disease, the systemic lupus erythematous (SLE) as an interferon-alpha signature, the role of platelets and the polymorphism of OX40 ligand (OX40L). In SLE, OX40L has been shown highly linked to the active form of the disease, was increased by the CD40L of platelets and induced the CD8 cytotoxicity while inhibiting the suppressive functions of regulator T lymphocytes. The third main factor of the SSc physiopathology apart from autoimmunity and fibrosis is the vasculopathy with an important role of endothelial cells (EC). They turned out to be half-professional antigen presenting cells and can modulate the adaptive immunity.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
350
* biological features of the standard follow-up * 2 more blood tube for the biological collection (serum and PBMC)
Skin biopsies
Service de Rhumatologie - Tripode - Hôpital Pellegrin
Bordeaux, Bordeaux, France
Assessment of OX40L expression in endothelial cells and skin biopsies.
Time frame: Day 1
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