Epidemiologic, Immunologic, and Immunogenetic Factors in Silicone-Associated Connective Tissue Diseases
Collecte de données
Maladies du Système Immunitaire+10
+ Maladies musculaires
+ Maladies musculo-squelettiques
Résumé
Date de début de l'étude : 1 novembre 1992
Date à laquelle le premier participant a commencé l'étude.This multicenter study will attempt to determine the epidemiologic, clinical, serologic and immunogenetic factors associated with patients who develop scleroderma/systemic sclerosis after silicone prosthesis implantation or silicone injection. This will be accomplished by comparing these patients to groups of appropriately matched patients with idiopathic scleroderma/systemic sclerosis without silicone exposure, and appropriately matched volunteers who have received similar silicone implants or injections and have not developed symptoms, physical examination findings, or laboratory abnormalities associated with autoimmune/connective tissue diseases. Patient and physician questionnaires will be self-administered, and will collect data regarding: the number and types of implanted silicone devices or injections; the indications for and nature of the surgical procedures; peri- and post-operative complications; initial and subsequent clinical presentations; and therapy and clinical course of the patients. Routine clinical tests and immunologic laboratory evaluations will be performed. Also, studies will be conducted on the proportion of circulating activated lymphocytes and levels of soluble mediators of inflammation (cytokines, sIL-2R, sCD4, sCD8, TNF), the types of HLA and T cell receptor genes present in the patients, and the presence and titers of anti-silicone antibodies and autoantibodies.
Protocole
Cette section fournit des détails sur le plan de l'étude, y compris la manière dont l'étude est conçue et ce qu'elle évalue.60 participants à inclure
Nombre total de participants que l'essai clinique vise à recruter.Éligibilité
Les chercheurs recherchent des patients correspondant à une certaine description appelée critères d'éligibilité : état de santé général ou traitements antérieurs du patient.Tout sexe
Le sexe biologique des participants éligibles à s'inscrire.Volontaires sains autorisés
Indique si les individus en bonne santé et ne présentant pas la condition étudiée peuvent participer.Conditions
Pathologie
Critères
For all groups: Age greater than 18 years; ability to give informed consent. Must not have severe medical disease requiring intensive care or any other conditions in which the drawing of the amount of blood required for research purposes is not deemed medically appropriate by the treating physician or the principal investigator. For Group 1: Patients who have had silicon prostheses, or silicone injection, who subsequently developed scleroderma/systemic sclerosis or myositis as defined by criteria established by the American College of Rheumatology. For Group 2: Patients with idiopathic scleroderma/systemic sclerosis or myositis as defined by criteria established by the American Collage of Rheumatology, without silicone implantation or injection, age-, sex-, and race-matched to Group 1. Group 3: Patients who have had silicone prostheses or silicone injection, age-, sex-, race- and silicone exposure-matched to patients in Group 1, who have not developed chronic symptoms, physical findings, or laboratory abnormalities associated with autoimmune or connective tissue diseases.
Centres d'étude
Ce sont les hôpitaux, cliniques ou centres de recherche où l'essai est conduit. Vous pouvez trouver le site le plus proche de vous ainsi que son statut.Cette étude comporte 1 site
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
Bethesda, United StatesOuvrir National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) dans Google Maps