Active clinical trials for "Immune System Diseases"

The goal of this study is to evaluate the proportion of subjects both antiretroviral experienced and virologically suppressed on lopinavir/ritonavir (LPV/r)400/100mg twice daily who maintain viral suppression after switching to lopinavir/ritonavir (LPV/r)800/200mg once daily. The hypothesis for this study is that the majority of subjects will remain virologically suppressed with once daily dosing versus twice daily dosing and therefore quality of life will be improved with the once daily dosing of lopinavir/ritonavir (LPV/r)800/200mg.

This is a multi-center, prospective, controlled study. MS patients (1° group: 30 patients in relapse; 2° group: 30 patients in remission) and age/sex-matched healthy controls (3° group: 30 subjects) will be enrolled in the study. Patients' disability level will be evaluated by EDSS and MSFC. Patients and controls will be tested for either coagulation/complement (C3, C4, C4a, C9, fibrinogen, factor VIII and X, D-dimer, protein C, protein S, antithrombin, factor II, aPTT, von-Willebrand factor), soluble markers of endothelial damage (thrombomodulin, Endothelial Protein C Receptor), antiphospholipid antibodies, lupus anticoagulant, complete blood count, viral serological assays or microRNA microarray. Patients will undergo dynamic susceptibility contrast-enhanced MRI using a 3.0-T scanner to evaluate CBF, CBV, MTT, lesion number and volume.

This is the first prospective study which evaluate patients with small B-cell clones to diagnose monoclonal gammopathy of renal significance (MGRS) and characterize it clinically, anatomopathologically and pathophysiologically taking int account a geriatric approach.

The purpose of this study is to establish the rationale for the practice of performing an oral reintroduction test without previous skin tests in children at low risk of IgE-mediated reaction or drug-induced toxidermia, and to confirm the criteria for a drug reintroduction test could be performed without previous skin tests, without subsequent risk of reaction for the child. The primary endpoint will be the risk of a severe IgE-mediated or delayed hypersensitivity reaction in children who received beta-lactam drug reintroduction protocol prior to skin testing.

The human immunodeficiency virus (HIV) remains at the moment a major public health problem. The figures currently report 37 million people infected with HIV worldwide, as well as 2 million new infections every year, the majority of which are men who have sex with men (MSM). HIV research has accounted for more than 335,000 publications on PubMed since its first description in 1981. However, many questions remain unanswered, especially regarding the risk factors and protective factors, its transmission and acquisition, during sexual intercourse. By creating a background on PubMed with the keyword "HIV", we can see that at the end of the 80's, it was already established that male circumcision decreased the risk of transmission of HIV by 50 to 60%. Multiple hypotheses have been studied to justify this discovery, such as the reduction of micro-traumatisms, the modification of keratinization, the modification of penile anatomy induced by foreskin removal. In parallel, the rise of the study of the human microbiota, which refers to all microorganisms (bacteria, viruses, archaea, fungi and parasites) living in a specific environment, the human body, and this in a healthy or pathological situation. There is evidence that the microbiota may be involved in the pathogenesis of various diseases and may play a major role in the homeostasis of the human body. This implication has also interested researchers in the field of HIV : the protective role of circumcision in the acquisition and transmission of HIV has therefore begun to be studied in terms of the modification of the penile microbiome. The first studies showed that circumcision had an impact on the abundance of bacteria present in the penis in humans, and modified the aerobic / anaerobic ratio in favor of the increase of aerobic bacteria. The first hypothesis was that circumcision played a protective role in the acquisition and transmission of HIV through a decrease in the diversity of the penile microbiota and in particular anaerobes. This discovery was disrupted by the emergence of studies tending to question a microbiota predisposing to the risk of HIV acquisition in both men and women. Indeed, it has been shown that certain bacteria (Prevotella, Dialister, ...) could favor the acquisition of the virus by the attraction in their wake of inflammation cells such as CD4 and Langerhans cells which would facilitate by their presence. , the penetration of the virus. This hypothesis has been proven in studies of bacterial vaginosis, which is known to be a risk factor for HIV acquisition and transmission. In 2012, results showed that the loss of Lactobacillus, in favor of anaerobic increases such as Gardnerella, Atopobium, and Prevotella, increased this risk against the HIV virus. Similarly, 7 bacteria have recently been incriminated in this phenomenon of susceptibility to HIV acquisition (Parvimonas, Gemella asaccharolytica, Mycoplasma hominis, Leptotrichia / Sneathia, Eggerthellaspecies and Megasphaeraspecies).Being committed to the exploration of the human microbiota in particular by culture, we propose to extend the knowledge of balano-preputial furrow 's microbiota in patients infected by HIV or not and supported in department Infectious Diseases. It is in this context, that a preliminary study carried out at the IHU between January and July 2018 made it possible to describe the existence of variability of the microbiota according to various criteria such as circumcision, HIV infection and sexual practices.

The objectives of this study are to use the Delphi method to assemble an expert panel representing innovation in asthma treatment, to collect freely suggested recommendation statements concerning OCS tapering (and sub-topics) among severe asthma patients from this panel for peer evaluation, and finally to determine the level of consensus for each statement from the panel as a whole.

To explore the association among gene, TCM pattern, TCM tongue diagnosis and TCM pulse diagnosis with the DNA Exome sequencing tools for Sjögren's syndrome

The Norwegian JIA Study (NorJIA) is a prospective, longitudinal, multicenter, observational study of 250 children with juvenile idiopathic arthritis (JIA) and 250 healthy controls, attending the three Norwegian university clinics in Bergen, Tromsø, or Trondheim. The study will run over 5 years, and include extensive clinical, laboratory, radiological and oral examinations at baseline and after 2 years follow-up. There will be a special focus on the jaw (temporomandibular joints) with extensive imaging and clinical examination, aiming at establishing scoring systems for active and chronic disease and growth disturbances. Another focus is to study mouth and teeth problems, such as caries and gingivitis, and look for predictors of poor oral health in children with JIA compared to health peers. As chronic inflammation, reduced physical activity and certain anti-inflammatory drugs can be detrimental for bone strength and development, the investigators also want to study the bone health of children with JIA, and look for predictors of poor bone mineral density. The results of the study may contribute to better diagnostics of inflammatory processes, earlier detection of poor oral or bone health, and thereby point to possible prevention strategies to increase quality of life for children with JIA in the future.

This study aims to provide an estimate of the incidence of paraneoplastic neurological syndromes and autoimmune encephalitides in France between the years 2016 and 2018. The study will describe the incidence of antibody subtypes and regional variations.

It is a study of translational research with mechanistically objectives and including biological samples of patients with chronic inflammatory disorders