Multi-Center Study to Determine Whether CD 152 Gene Polymorphisms Associated With Susceptibility to Type-1-Diabetes Mellitus (T1DM) Correspond With Abnormalities in T Cell Function
Collecte de données
Maladies du système endocrinien+2
+ Maladies métaboliques
+ Maladies nutritionnelles et métaboliques
Résumé
Date de début de l'étude : 1 janvier 2000
Date à laquelle le premier participant a commencé l'étude.Genetic variations in CD152 have been reported to confer susceptibility to the development of type-1-diabetes mellitus (T1DM). In this protocol we will draw blood samples from patients and normal control volunteers in order to analyze for the presence of CD152 genetic variations and to determine whether those variations are associated with measurable abnormalities in T cell function. Subjects with T1DM and homozygous CD152 gene polymorphisms, patients with T1DM but without CD152 polymorphisms, and control subjects with or without CD152 polymorphisms will be studied to determine whether the CD152 polymorphisms have measurable effects on T cell function and signaling. We will assess T cell function by measuring: proliferation, viability, apoptosis, cytokine production and T cell signal transduction. The identification and characterization of genes that are linked to T1DM may provide an explanation into the mechanisms by which individuals are predisposed to T1DM.
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.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
Patients must have a willingness and legal ability to give consent, or permission. Candidates with T1DM or Healthy Volunteers will be eligible. Patients must be equal to or greater than 18 years of age. Patients must not have an active malignancy. Patients with a hemoglobin count of less than 9.0 mg/dl will be excluded. Patients may be on erythropoietin therapy, but will not be placed on therapy solely to facilitate research sample acquisition. Patients must not have a known immunodeficiency syndrome.
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 Diabetes and Digestive and Kidney Diseases (NIDDK)
Bethesda, United StatesOuvrir National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) dans Google Maps