Active clinical trials for "Immune System Diseases"

Systemic sclerosis is an autoimmune connective tissue disease with undefined etiology and characterized by progressive fibrosis of the skin and major organs. Dry eyes and / or buccal syndrome is commonly reported in patients with systemic sclerosis. Goujerot-Sjogren syndrome is a chronic autoimmune disorder that is characterized by dryness of the eyes (xerophthalmia) and / or mouth (xerostomia). It may be primary or secondary to another connective tissue disease (such as lupus, rheumatoid arthritis or other). Several criteria have been validated to classify the SS but require a labial salivary gland biopsy, invasive act which complications can sometimes be reported (hematoma, lip sensory defect). Several scores based on the evaluation of the ultrasound homogeneity of the salivary glands were developed but no studies have evaluated ultrasound abnormalities of salivary glands in patients with systemic sclerosis.

Graft-versus-host disease (GVHD) is a frequent and severe complication of hematopoietic stem cell transplantation (HSC), and is responsible for significant early mortality despite prophylactic strategies developed in recent decades, Especially since it is resistant to first-line treatment. The present diagnosis is difficult, non-specific and is based on the combination of an evocative clinical context (CSH allograft, time to appearance before J100, characteristic clinical manifestations), suggestive anatomo-pathological analysis (predominantly inflammatory infiltrate Lymphocyte, mucosal edema and presence of apoptotic bodies), and the exclusion of any differential diagnosis (in particular serology / negative viral PCR). However, to date there is no molecular characterization of this manifestation, and therefore no specific treatment. The nCounter® nanostring technology allows the rapid and simple analysis of the simultaneous expression of a group of genes (up to 800 on the same sample), from a very small amount of RNA, and from samples with difficulty Such as fabrics already fixed to formaldehyde and included in paraffin. It allows the detection of a "molecular signature" of the tissue analyzed. No transcriptomic analysis has ever been performed on human tissues with GVHD.

Perioperative anaphylactic reactions are immediate, hypersensitive reactions that are potentially life-threatening resulting from a sudden release of mediators from mast cells and basophiles. Which is due to either immune (IgE or non-IgE mediated) or non-immune mechanisms. Pseudo-allergic are defined as those reactions that produce the same clinical symptoms with anaphylaxis but are not IgE mediated, occur through a direct nonimmune-mediated release of mediators from mast cells and/or basophils or result from direct activation.so pseudo-allergic reactions do not require previous contact with the substance. Recent studies have shown that a mast-cell-specific receptor,G-protein-coupled receptor MRGPRX2,is crucial for pseudo-allergic drug reactions.in this study. In the study, we will examine the MRGPRX2 gene in patients with pseudo-allergic reactions during anesthesia, aiming at clarifying the relationship between pseudo-allergic reactions and MRGPRX2 gene.

The investigators wish to characterize alterations in the architecture and function of immune cells in patients with a primary immunodeficiency that also develop inflammatory bowel disease. In addition, The investigators' goal is to characterize the microbiome of these patients, in order to determine whether specific microbial alterations are related to inflammation.

prospective analytical study of all pregnant ladies with systemic lupus in Beni-suef localities

Urticaria is one of the most frequent presenting complaints in dermatology, allergy, and emergency departments. The term chronic urticaria (CU) is understood as the appearance of recurrent wheals more than twice a week for over 6 consecutive weeks .Urticaria is not a single disease but a reaction pattern that represents cutaneous mast cell degranulation, resulting in extravasation of plasma into the dermis. The incidence of chronic urticaria is unknown, but it is thought to occur in 0.1%-3% of the population

Current study evaluates the use of the improved Basophil Activation Test (BAT) in the diagnostics of IgE-mediated allergy to antibiotics and non-steroidal anti-inflammatory drugs (NSAIDs).

The molecular mechanisms participating in the various aspects of the DNA Damage Response (DDR) are absolutely essential to maintain the genome dynamics essential to all living organisms. The most commonly studied consequence of faulty DDR is genome instability participating in cancer onset. In the present proposal, we wish to explore another aspect of DDR, not relevant to cancer, which is its absolute requirement at several key steps of the development, maturation, and function of the immune system. The most "spectacular" consequences of faulty DNA repair processes with respect to the immuno-hematopoietic tissue are the complete block of B and T lymphocytes maturation owing to defective DNA joining phase during V(D)J recombination resulting in patients with Severe Combined Immune Deficiency (SCID). The objectives of this study are to increase our knowledge on the role of the various DNA repair processes in the development, the maintenance, and the function of the immune system and thus, to better understand why and how dysfunctions of these DNA repair processes result in human severe conditions such as CVID, LOCID or other manifestations of immune disorders such as autoimmunity. The explorations of DNA repair mechanisms in the patients will allow us to establish the genetic diagnosis in some patients with until now undefined molecular diagnosis. This is of immediate importance for the patients and their families, as it not only contributes to a better understanding of the patients' condition, but also allows providing genetic counseling for the families.

Multiple Sclerosis (MS) is a chronic autoimmune disease where lymphocytes inflict damage to the axons and myelin sheaths of the central nervous system. Persons with multiple sclerosis (pwMS) were long advised to avoid physical activity but the benefits of exercise to improve cardiovascular and cognitive functions in pwMS have become important aspects of standardized rehabilitation programs. Recent findings show that the achieved adaptations through exercise are associated with the intensity dependent lactate increases during exercise. This dose-response relationship between the mode and the exercise intensity implicates the relevance of the exercise protocol as higher exercise intensities seem to facilitate greater benefits, also in pwMS. This pilot study evaluates the influences of acute bout of moderate physical exercise (cycling) and relaxation on cognitive functions at three time points. Primary outcomes are the differences (at timepoint t2) of cognitive functions assessed via the Symbol Digit Modalities Test (SDMT) and the Brief Visuospatial Memory Test Revised (BVMT-R) T1-3 of the BICAMS battery. Results should into a randomised controlled Trial that investigates the specific influences of a three-week training intervention on Brain-derived neurotrophic factors (BDNF), Insulin Growth Factor-1 (IGF-1) and Vascular Endothelial Growth Factor (VEGF) as central neurobiological parameters of neuroplasticity, cardiorespiratory Fitness and cognitive functions.

Anti N-methyl-D-aspartate receptor encephalitis is an autoimmune encephalitis，found in recent years，producing the specific IgG antibody induced by the NMDA receptors.It is the most common curable disease among the non infectious-autoimmune encephalitis,usually has been misdiagnosed as other causes of encephalitis.Our previous study found that there are differences between the Chinese and the foreign in anti-NMDA receptor encephalitis such as the sex ratio, the rate of combined tumor and clinical manifestations.As a new found disease,the incidence rate has been underestimated.Therefore,to establish the Registry Research Database for Chinese group of anti-NMDA receptor encephalitis is imminent.This study will combine Beijing area's hospitals and foreign experts,depending on multicenter, prospective and registry method,to understand the incidence in Beijing area,to summarize and analyze the clinical data of patients.So,there will make a solid foundation for the subsequent Beijing area detection platform and other research.