Search results for "IMMUNOSUPPRESSION"

Corticosteroid-free immunosuppression in liver transplantation: a meta-analysis and meta-regression of outcomes.

2009

To examine the impact of steroid withdrawal from the immunosuppression protocols in liver transplantation. The electronic databases Medline, Embase, Pubmed and the Cochrane Library were searched. Meta-analysis pooled the effects of outcomes of a total of 2590 patients enrolled into 21 randomized controlled trials (RCTs), using classic and modern meta-analytic methods. Meta-analysis of RCTs addressing patients transplanted for any indication showed no differences between corticosteroid-free immunosuppression and steroid-based protocols in most of the analyzed outcomes. More importantly, steroid-free cohorts appeared to benefit in terms of de novo diabetes mellitus development [R.R = 1.86 (1.…

Role of mTOR inhibitors for the control of viral infection in solid organ transplant recipients

2016

Appropriate post-transplant immunosuppressive regimens that avoid acute rejection, while reducing risk of viral reactivation, have been sought, but remain a chimera. Recent evidence suggesting potential regulatory and antiviral effects of mammalian target of rapamycin inhibitors (mTORi) is of great interest. Although the concept of an immunosuppressive drug with antiviral properties is not new, little effort has been made to put the evidence together to assess the management of immunosuppressive therapy in the presence of a viral infection. This review was developed to gather the evidence on antiviral activity of the mTORi against the viruses that most commonly reactivate in adult solid org…

Preclinical report on allogeneic uterus transplantation in non-human primates

2013

Study question Is it possible to perform allogeneic uterus transplantation (UTx) with a donation from a live donor in a non-human primate species and what immunosuppression is needed to prevent rejection? Summary answer Allogeneic UTx in the baboon is a donor- and recipient-safe surgical procedure; immunosuppression with induction therapy and a triple protocol should be used. What is known already UTx may become a treatment for absolute uterine factor infertility. Autologous UTx models have been developed in non-human primates with reports on long-term survival of the uterine grafts. STUDY DESIGN, SIZEAND DURATION: This experimental study included 18 female baboons as uterus donors and 18 f…

Uterine transplantation: one human case followed by a decade of experimental research in animal models

2011

Uterine transplantation (UTx) aims to treat unconditional uterine factor infertility by replacing a non-functioning or non-existing uterus. After one attempt of UTx in the human 10 years ago, intensive research has been performed. The results of these specific studies on surgical technique, ischaemia-reperfusion injury, immunosuppression and fertility are discussed.

Prophylaxis and treatment of hepatitis B in immunocompromised patients

2007

Prophylaxis and treatment of hepatitis B in immunocompromised patients.

2007

The literature on hepatitis B virus (HBV) in immunocompromised patients is heterogeneous and referred mainly to the pre-antivirals era. Today a rational approach to the problem of hepatitis B in these patients provides for: (a) the evaluation of HBV markers and of liver condition in all subjects starting immunosuppressive therapies (baseline), (b) the treatment with antivirals (therapy) of active carriers, (c) the pre-emptive use of antivirals (prophylaxis) in inactive carriers, especially if they are undergoing immunosuppressive therapies judged to be at high risk, (d) the biochemical and hepatitis B surface antigen (HBsAg) monitoring (or universal prophylaxis, in case of high risk immunos…

Pre-core mutants of hepatitis B virus in patients receiving immunosuppressive treatment after orthotopic liver transplantation.

1996

Orthotopic liver transplantation (OLT) is a possible treatment for acute or chronic liver failure due to hepatitis B virus (HBV) infection, but reinfection of the graft can be a serious complication. The aim of this study was to monitor HBV markers, to analyse pre-core-/core-mutations as well as to identify the viral population causing reinfection after OLT, and to investigate the emergence or disappearance of these mutants in patients receiving immunosuppressive treatment. Fifty-four pre-and posttransplant serum samples of 17 patients were analysed. All patients underwent OLT for HBV-related liver disease and had HBV-DNA before and after OLT. Total DNA was extracted from all sera and a 240…

Evidence for spontaneous immunosuppression in autoimmune hepatitis

1995

Autoimmune hepatitis (AIH) runs a variable clinical course. Slow disease progression or even spontaneous remissions can be observed and suggest that the autoimmune process can, at least to a certain extent, be controlled by regulatory elements of the patient's own immune system. In experimental autoimmune hepatitis (EAH) spontaneous recovery is regularly observed and associated with antigen-specific and antigen-nonspecific suppression. The aim of the current study was to search for similar immunoregulatory phenomena in patients with AIH. We examined T-cell reactivity to soluble human liver antigens in 11 patients with active autoimmune hepatitis and 30 patients with other liver diseases (ch…

Suppression of murine experimental autoimmune hepatitis by T-cell vaccination or immunosuppression

1998

Patients with autoimmune hepatitis (AIH) usually require immunosuppressive therapy for many years, if not for a lifetime. Experimental immunotherapy such as T-cell vaccination aims at manipulating the immune system in such a way that autoimmunity is specifically regulated to enable long-lasting correction of the disease process. We aimed to test the feasibility of T-cell vaccination as well as conventional immunosuppression in the murine model of experimental autoimmune hepatitis (EAH). EAH was induced in 5- to 7-week-old BALB/c mice by immunization with syngeneic liver homogenate in complete Freund's adjuvant. For T-cell vaccination, splenocytes were removed from animals 14 days after indu…

An Analysis of the Immunomodulatory Properties of Human Spheroids from Adipose-Derived Stem Cells

2023

Aims Current methods to induce tolerance following allotransplantation or in autoimmunity carry significant morbidity, and research is very active in investigating alternative methods which could minimize toxicity. Spheroids from adipose stem cells (SASCs) are increasingly gaining interest, they hold a great proliferative and differentiating potential. An immunomodulatory effect has not been investigated on SASCs yet. In this study, we analysed the immunomodulatory properties of SASCs and compared them to ADSCs. Main methods Adipose stem cells (SASCs and ADSCs) and peripheral blood mononuclear cells (PBMCs) were collected from healthy individuals. We analysed the cytokine production and pro…