View clinical trials related to Vasculitis.
Filter by:The aim of this project is to prospectively evaluate the diagnostic accuracy of different imaging tools in specific giant cell arteritis disease subsets before and after treatment initiation. Diagnostic tools with high sensitivity and specificity are a prerequisite for optimal treatment of GCA patients. Specifically, the diagnostic accuracy of ultrasound (US) as compared to 18F-FDG PET/CT in new-onset, treatment naïve large vessel(LV)-GCA patients is investigated. Furthermore, long-term follow up including US, 18F-FDG PET/CT and cross sectional imaging is performed to explore the potential of imaging as monitoring and prognostic tools. In this observational cohort, the diagnostic accuracy of 18F-FDG PET/CT after three and ten days of glucocorticoid treatment in the subset of LV-GCA patients and the diagnostic accuracy of 18F-FDG PET/CT in cranial artery inflammation in new-onset, treatment naïve c-GCA patients as compared to a control group of patients with a previous diagnosis of malignant melanoma was also evaluated and is registered elsewhere (ClinicalTrials.gov Identifier: NCT03285945 and NCT03409913, respectively)
The overall objective of this project is to study the influence of modern anti-inflammatory treatments in established inflammatory rheumatic diseases (IRD) on antibody response elicited by pneumococcal vaccination using 13-valent conjugate vaccine in combined schedules with 23-valent polysaccharide vaccine. In addition, the aim is to study the clinical aspects of vaccination regarding: tolerability in immunosuppressed patients with IRD, impact on existing rheumatic disease, possible association with onset of new autoimmune diseases, long-term immunity following pneumococcal vaccination and efficacy in preventing invasive pneumococcal disease. Results from this study are expected to bridge the existing knowledge gap and contribute to body of evidence needed for recommendations and implementation of vaccination program in IRD patients.
This study evaluates safety, tolerability, biodistribution and performance of the [68Ga]Ga-DOTA-Siglec-9 following a single intravenous administration in patients with active rheumatoid arthritis, vasculitis or pulmonary sarcoidosis as well as radiation dosimetry, plasma pharmacokinetics, biodistribution, safety and tolerability of the tracer in healthy volunteers.
The aim of present study is to determine cardiovascular status of children who had KD in past and to identify possible biochemical markers of cardiovascular damage in those patients. In this cross-sectional study children with history of KD will be examined 5 years after receiving intravenous immunoglobulin treatment (IVIG) and compared to healthy controls in terms of: serum levels of endothelial injury markers (circulating endothelial cells, endocan, soluble thrombomodulin, vascular endothelial growth factor (VEGF) and soluble E-selectin), peripheral blood pressure, central blood pressure, arterial stiffness parameters (measured by applanation tonometry), carotid intima media thickness (cIMT), capillaroscopy and echocardiography.
The study aims at defining the role of soluble CD95 Ligand in the physiopathology of a rare group of inflammatory diseases: ANCA associated vasculitis. Soluble CD95 Ligand might have a prognostic and diagnostic interest as well as potential for the discovery of new therapeutic strategies.
Chronic hepatitis C infection (CHC) is usually asymptomatic; nevertheless, there are studies that show that up to two thirds of patients may present some type of extrahepatic manifestation. The most frequent extrahepatic manifestation is type II mixed cryoglobulinemia (MCG-II) and clinically the most common presentation is leukocytoclastic vasculitis (LCV) with palpable purpura that affects the lower extremities. It is estimated that up to 80% of MCG-II cases are due to CHC. Also, previous studies have demonstrated that CHC prevalence is higher in patients with autoimmune diseases compared with general population. Therefore, if vasculitis is an extrahepatic manifestation of CHC, then the prevalence of CHC infection in this group of patients could be higher than the prevalence reported in general population. The aim of the study is to know the prevalence of CHC, determined by serological rapid test for hepatitis C screening, then all positive cases will be confirmed by quantitative viral load, in patients who consult primarily to a rheumatology department for "vasculitis" or other potential hepatitis C extrahepatic manifestations (rheumatological conditions).
Vasculitis denotes affection of small to medium sized vessels by polyangitis. Antineutrophil cytoplasmic antibodies (ANCA) are immunoglobulin G (IgG) autoantibodies directed against constituents of neutrophil granules leading to neutrophil degeneration which results in cell apoptosis known as "Natoptosis" (NaTosis) of the cells. These lead to vessel endothelial cell damage. So that, ANCA formation seems to be the basic reaction in vasculitis. Complement activation at C3 and C4 was thought to be involved in renal damage ANCA associated vasculitis (AAV).
Neutrophil cytoplasmic autoantibodies (ANCA) are essential serum markers in the diagnosis of vasculitis. Indirect immunofluorescence with microscope reading by two readers is the reference technique for their detection. In the AP-HM immunology laboratory we are looking for ANCAs in more than 7000 sera per year. The reading of the slides is time-consuming, dependent operator, and lacks standardization. In order to optimize these parameters, we propose the automation of ANCA reading by using a robotic platform developed in our laboratory and called ICARE (Immunofluorescence for Computed Antibodies Rational Evaluation). This microscopic imaging platform with automated reading is currently used in daily routine for the detection of anti-nuclear autoantibodies. The objective of the project is to establish an algorithm allowing i) to automatically and reproducibly discriminate the positive ANCAs from the negative ANCAs and ii) to propose to the biologist a fluorescence aspect. The investigators will then validate this algorithm on 2000 consecutive routine samples sent to the laboratory for ANCA research. The usual care will not be changed, only a phase of acquisition of the images will be added to the analysis. The investigators expect to use this algorithm "ICARE / ANCA" in daily hospital routine and thus optimize the results with a real economic impact is 50% less reading time.
Anti-neutrophil cytoplasmic antibodies (ANCA), directed against myeloperoxidase (MPO) and against proteinase 3 (PR3), have a pathogenic role during ANCA (AAV) vasculitis. Glomerular basement membrane (MBG) antibodies also have a direct pathogenic role in Goodpasture's syndrome and anti-MBG antibody glomerulonephritis (GN). In some patients, the severity of renal and / or pulmonary involvement justifies the rapid purification of these autoantibodies by an apheresis procedure, while waiting for the effect of immunosuppressive treatments aimed at reducing their production. During vasculitis, plasma exchange (PE) is recommended in patients with severe renal impairment or intra-alveolar hemorrhage (2012 KDIGO Clinical Practice Guideline for Glomerulonephritis). Given certain disadvantages related to plasma exchanges (low volume of purified plasma, non-selective technique for immunoglobulins (Ig), need for replacement solute, induction of coagulation disorders), immunoadsorption (IA), already used in transplantation, has been developed in these indications. IA has indeed greater selectivity for Ig with a probable better purification capacity due to higher volumes of plasma treated per session. The price of IA is however higher than that of EP. These two apheresis techniques, EP and IA, are commonly used in France during severe forms of vasculitis ANCA or anti-MBG, without the superiority of one or the other has been demonstrated. As a result of higher plasma volumes being purified, AI may allow faster purification of pathogenic antibodies. No studies to date have specifically compared the purification kinetics of these antibodies between EP and IA. The CINEVAS study (VAScularite Antibody Purification CINetic) is a multicentric pilot study whose main objective is to compare the purification kinetics of ANCA (anti-MPO or anti-PR3) and / or anti- MBG in patients treated with EP versus those treated with IA
Purulent meningitis are life-threatening diseases in childhood. Cerebral vasculitis have been described in bacterial meningitis, but poor is known about their physiology and their impact on outcome. The investigators decide to realize a retrospective mono-centric study carried out at Montpellier university hospital which looks back at a 7-year study(2009-2016). The Investigators selected purulent meningitis cases based on the bacteriological data provided by the HDB (hospital data base). The Investigators divides in two groups : Group A if patients present a cerebral vasculitis ( radiologic diagnostic by RMI or tomodensitometry), in all, cases the diagnosis of vasculitis was confirmed by a radiologist specialised in neuropaediatrics by a second reading;Group B purulent meningitis with a cerebral vasculitis imaging. Tuberculous meningitis, meningitis in CSF shunt, and in patients having chemotherapy were excluded. The investigators report clinical and biological finding, inflammatory marker at the onset. The Investigators register also the clinical evolution and sequelae