NCT01157468

Catalytic Antibodies and Lupus in Martinique

Study of Catalytic Antibodies in a Cohort Population of Martinique

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 200 (actual)
• Sponsor: University Hospital Center of Martinique · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

* The Martinique island (French West-Indies) is an area of high prevalence and incidence for Systemic Lupus Erythematosus (SLE), respectively 64,2/ 100000 and 4,7/ 100000. In many cases, this disease concerns Afro Caribbean women, whose auto-antibodies are excessively high; also, organic damages are frequent. The disease can be fatal. * Studies have shown that some cytotoxic auto-antibodies may have a responsibility in the hydrolysing of DNA. This study will focus on the DNA activity and also on the overwhelm hydrolase activity dealing with the Lupus disease in order to measure the link between the disease activity and the catalytic activity. Patients concerned by this study will be Martinique people.

Detailed description

This study will be conducted as an case-control survey. * The first group with patients: 60 SLE patients, 30 patients with a quiescent lupus and 30 patients with an active lupus. Patients that will be included are followed by the University hospital of Fort-de-France. * The second group is the control group: subjects will be recruited by the French organisation responsible for donation of blood. Test will be done at the UMRS 872 laboratory of the INSERM - Laboratory of Immunopathology and Therapeutic immunointervention - in Paris ; two catalytic activities will be tested: the DNase activity and the hydrolase activity. Means to analyse the two activities: digestion of plasmid and Affinity-linked Oligonucleotide Nuclease Assay for DNase activity and hydrolysis of a peptide PFR-MCA for hydrolase activity.

Conditions

• Systemic Lupus Erythematosus

Timeline

• Start date: 2012-01-01
• Primary completion: 2013-12-01
• Completion: 2013-12-01
• First posted: 2010-07-07
• Last updated: 2016-09-08

Locations

1 site across 1 country: France