Cytokine Expression in Sera, Ex Vivo Stimulated Peripheral Blood Mononuclear Cells Culture, and Skin in Psoriasis - Comparison of Patients with and Without Joint Involvement
The objective of the resarch is to study the cytokine profile of patients with psoriatic arthritis and psoriasis in order to better understand the pathophysiology of the disease and the contribution of cytokines to the presence or absence of joint involvement. This research will compare cytokines levels in sera, in PBMC culture after LPS or CD3/CD28 agonist antibodies, and in skin biopsy.
• For psoriasis patients :
‣ Age over 18 years old
⁃ Signed informed consent
⁃ 5 year old psoriasis at least
⁃ At least one skin lesion over 2 cm
⁃ Without any articular symptoms
⁃ Without any DMARDs
⁃ Without anticoagulant treatments or coagulation disease
⁃ With normal articular and enthesis sonography
• For psoriatic arthritis patients :
‣ Age over 18 years old
⁃ Signed informed consent
⁃ Psoriatic arthritis according to CASPAR criteria
⁃ Without any DMARDs
⁃ Without anticoagulant treatments or coagulation disease
⁃ With at least one synovitis at inclusion
• For controls
‣ Age and sex matched with a patient without any rheumatic or dermatologic medical conditions
⁃ No treatment with corticosteroïds or non-steroïdial anti-inflammatory drugsAge over 18 years old