View clinical trials related to Immune Tolerance.
Filter by:We believe that CEC, besides coming from cells shedding from patient vasculature, could partly belong to donor, originating from the cellular graft.
The study determines how a 6 months oral immunotherapy (OIT) program with hen's egg (HE) effects cellular and humoral immune responses in 50 children with HE allergy. Clinical data, transcriptomics and epigenetics are combined and analyzed by advanced system biology methods. This study will provide better understanding of the effects and mechanisms of OIT.
The study will determine whether patients with functioning Human Leukocyte Antigen (HLA) matched kidney transplants for at least one year and who want to discontinue immunosuppressive drugs can be treated with Total Lymphoid Irradiation (TLI) and rabbit Anti-Thymocyte Globulin (rATG) and an HLA matched donor hematopoietic progenitor cell infusion such that their drugs are successfully withdrawn while maintaining normal renal function.
Heart transplantation (HTx) is a procedure which is hindered by several complications. The HEARTS registry aims to allow the analysis of risk factors of all post-HTx complications. It consists in an exhaustive data collection at the moment of inclusion, i.e. HTx, knowing that patients underwent a full-fledged evaluation beforehand to evaluate their aptitude to being transplanted. Post-HTx complications include but is not limited to: all-cause mortality, AMR, ACR, CAV, AKI, sepsis, cancer, psychological disorders, metabolic disorders.
Maternal infections affect the basal immune status of neonates. One of the possible mechanism is the fetomaternal microchimerism, in which some cells and active substances are exchanged bi-directionally between maternal and fetal circulation through placenta. Even in the absence of a direct (vertical) transmission of pathogens to fetuses, certain infections make the neonates more prone to allergies and some adverse events of early vaccinations. We postulate that the basal immune status of neonates born to HIV and LTBI infected mothers is primed by gestational exposure to immunological active molecules, which could results in an altered response to early BCG vaccination. Transcripts expression identified by RNA sequencing are compared between sets of mother-child and their respective umbilical cord blood, and between groups of infected and non-infected pairs.
This research study is to determine if donor blood stem cells given after living, related, HLA antigen (Ag) haplotype match or living, unrelated donor kidney transplantation. Minimal HLA antigen matching will include matching of 2 HLA antigens that can be either HLA A, B, and /or DR. This research will change the immune system such that immunosuppressive drugs can be completely withdrawn or reduced to minimal dose without kidney rejection.
The purpose of this study was to assess the relationship between infertility blood test results and outcomes of pregnancy and alive birth of women who underwent with or without intravenous immunoglobulin (IVIG) before in vitro fertilization.
Ovarian cancer is the third most common gynecological malignancy worldwide. Because of late, aspecific symptoms, the disease is usually diagnosed at an advanced stage. Most patients experience recurrence and die as a result of the disease within 5 years. Treatment is a combination of surgical debulking and systemic administered chemotherapy. Intra-peritoneal (IP) chemotherapy with is currently considered the most effective treatment. In patients with at least an optimal surgical debulking, this leads to an improvement in life expectancy from 50 to 66 months. IP administration of chemotherapeutic agents is still not common practice. Furthermore recent studies revealed that cancer cells express a variety of tumor antigens, which can be targeted by the immune system. Also ovarian cancer shows evidence of a role for the immune system in clinical outcome. Novel insights into the mechanism of action of chemotherapy indicate that the efficacy of chemotherapeutic interventions are dependent on the modulation of the immune system. The impression exists that since IP chemotherapy is used, relatively more recurrences outside the abdominal cavity are observed. As of yet, no studies have described pharmacokinetics and pharmacodynamics of IP administered cisplatin and paclitaxel in the blood circulation. The investigators propose to study the use of this aspiration fluid from the IP cavity as a biomarker for the efficacy of chemotherapy intervention, monitor the effect of chemotherapy on IP tumor cells in the peritoneal cavity and monitor the effect of chemotherapy on immune cells present in the IP cavity. As well the investigators propose to correlate the presence and amount of tumor cells in peritoneal fluid with the debulking efficacy and CA 125 levels. Secondary to this the investigators intend to determine the pharmacokinetics of cisplatin and paclitaxel when administered in the IP cavity in the central circulation (plasma) as well as in the peritoneal fluid. In this observational explorative study women, aged younger than 70 years, who will receive standard IP chemotherapy for advanced epithelial ovarian cancer, who are in an adequate physical and biochemical state to receive chemotherapy are included. Immunological cell counts, tumor marker, immunological cell pathway activation and plasma concentrations of cisplatinum and paclitaxel in venous blood and in fluid aspirated from the abdominal cavity will be measured.
To evaluate the bacterial-viral interactions between LPS and Fluenz as a model for sepsis (bacterial) and Influenza (viral) infections which are common and associated with high mortality rates in the ICU. To understand these interactions is important for the development of preventive and therapeutic interventions.
The purpose of this study is to validate and test a tolerance gene expression profile for the identification of operationally tolerant liver transplant recipients, allowing for the successful withdrawal of immunosuppression without rejection in these patients.