View clinical trials related to Immune Defect.
Filter by:The goal of this observational study is to learn about the role of immune cells in patients with diabetes and chronic foot ulcers. Researchers will compare blood and tissue samples of patients with diabetes and a foot ulcer that is healing or healed compared to those diabetic patients where the foot ulcers is not healing (chronic ulcer).
Cutaneous melanoma is a bad prognosis skin cancer, which can be treated with immune checkpoint inhibitors (ICI), such as anti-PD-1 (nivolumab, nivo) and anti-CTLA-4 (ipilimumab, ipi). However, about 50% of patients do not respond or relapse within 3 years post therapy induction, and immune-related adverse events (irAEs), such as colitis, are triggered and can be treated with TNF inhibitor (TNFi; ie, infliximab, inflix). The pharmacodynamic impact of TNFi on the immune and clinical responses remain to be clarified. The investigators previously demonstrated that TNFi enhance the efficacy of ICI in mouse melanoma models. Based on preclinical findings, the investigators implemented two clinical trials in advanced melanoma patients, TICIMEL and MELANFalpha. In TICIMEL, patients are concomitantly treated with TNFi [certolizumab (certo) or inflix] and ICI (ipi+nivo). In MELANFalpha, patients are treated with ICI alone. Preliminary results show both tritherapies promote systemic MART-1 specific CD8 T cell responses and that certo but not inflix may improve ICI efficacy and Th1 responses. In mouse melanoma models, TNFi enhance the response to ICI. Investigators' primary objective is to decipher how certolizumab and infliximab influence ICI-dependent anti-tumor immune responses in advanced melanoma patients. The secondary objectives are to analyse the cellular and molecular impact anti-TNF have on ICI-dependent anti-melanoma immune responses and clinical activities (irAEs and efficacy). By combining mouse and human data as well ex vivo functional assays, the investigators will dissect the impact treatments have on anti-melanoma immune responses by flow cytometry and transcriptomic analyses. The investigators expect to clarify (i) the mechanisms by which TNFi enhance ICI efficacy, (ii) identify the best TNFi to be combined with ICI in advanced melanoma patients and (iii) discover TNF-dependent biomarkers of resistance.
Supplements and functional foods are now readily available and usable by the general population. Many supplemnets are commonly used in poly-treated patients where interactions or adverse events may develop, therefore we evaluate in the rela life the use of nutraceuticals, their clinical effects and the development of adverse drug reactions
Mycobacterium tuberculosis (M. tuberculosis) infection is still a problem that cannot be overcome in Indonesia. In 2018 the number of tuberculosis (TB) sufferers in Indonesia reached more than 850/100,000 population, an increase around 20% from the previous year's incidence. One of the highest number of cases is in East Java Province, which is 38% of the total number of new TB cases in Indonesia. Extrapulmonary tuberculosis (EPTB) according to WHO classification criteria is an M. tuberculosis infection that occurs in tissues and organs outside the lung parenchyma. The incidence rate in Indonesia reaches 1-5% of the incidence of TB thus EPTB may often be forgotten. However, the diagnosis, therapy and monitoring post treatment in EPTB remains difficult to do. The focus of this research is tuberculous lymphadenitis (TB), due to 50% of EPTB cases in Indonesia was lymphadenitis TB. The risk factors for EPTB are immunocompromised conditions, such as HIV infection or comorbid conditions such as chronic kidney disease (CKD) and diabetes mellitus, but the mechanism of EPTB homing is still unclear. The mechanism of EPTB homing, especially TB lymphadenitis, really needs to be known for the development of diagnostics and therapy as well as preventing the occurrence of TB lymphadenitis. The importance of this research is to obtain compounds from the human immune response that can be developed as diagnostic markers and therapeutic targets for tuberculosis infection, especially TB lymphadenitis. Activated macrophages containing M. tuberculosis are carried by lymph flow to lymph nodes, where there is deposition of antigen-antibody complexes which then activate CC Chemokine Receptor-2 (CCR2) on lymphocytes, which are the primary receptors for Chemokine (CC motif) ligands ( CCL)-8 and CCL5, proteins expressed on macrophages containing M. tuberculosis. Activation of CCR2 increases the production of IL-10(10). IL-10 has been responsible for decreasing the secretion of TNF-, IFN-γ, and IL-1β (11). IFN-γ affects the process of M. tuberculosis elimination and the success of TB therapy, so that IL-10 is responsible for the failure of macrophages to eliminate M. tuberculosis. IL-10 also binds to Signal Transducer and Activator of Transcription 3 (STAT3) and STAT3 increases the release of Suppressor of Cytokine Signaling 3 (SOCS3). SOCS3 interferes with IFN-γ signaling for CCR2 recognition of M. tuberculosis-containing macrophages. On the other hand, the mechanism of T lymphocytes and macrophages that activate pro-inflammatory mediators (TNF-, IFN-γ, and IL-1β) and the association of IL-10 activation on STAT3, SOCS3 and CCR2 expression in the incidence of EPTB, especially TB lymphadenitis without TB infection remains unknown.
Our knowledge on cardiovascular side effects of immune checkpoint inhibitors (ICIs) is restricted to this date to observational retrospective data (mainly case series and pharamcovigilance analysis). We aim at assessing the incidence of cardiovascular adverse side effects of ICIs by means of a prospective interventional single centre study using multiple biomarkers.
The purpose of this research is to evaluate blood samples from HIV infected and non-HIV infected people opioid and non opioid users to understand how opioid affect the immune responses (body defenses against infection) to the flu vaccine.
In the first retrospective part of the study the investigators will conduct a data analysis of patients having received a bovine aortic graft. The investigators will analyze charts and CT / MRI at various time intervals and identify if there are signs of inflammation. In the second prospective part the investigators will select survivors from the first part with and without inflammation signs. If they consent to participate in the study the investigators will do a blood sampling in order to perform further immunological analysis. Additionally, the investigators will examine their quality of life by QoL SF-12 questionnaire.
This study evaluate the effect of two different doses of vitamin D on T-regulatory cells in preterm infants. Half of the subjects receives 400 IU vitamin D and the other half receives 800 IU vitamin D.
- Evaluate about age of resolution in immune defect in 22q11.2 Deletion Syndrome - Incidence of immunodeficiencies in 22q11.2 Deletion Syndrome
An increasing number of publications have demonstrated that homologous (allogeneic) blood transfusion impairs outcome in cancer and non-cancer patients. Leukocyte depletion of blood products cannot solve these problems, despite improved quality of red cells; a recent study demonstrated deteriorated outcome of cancer patients with elective colon surgery and transfusion of leukocyte depleted allogeneic blood.