Search results for "Organ transplant"

CAR-T therapy in solid transplant recipients with post-transplant lymphoproliferative disease: case report and literature review

2021

Patients with postransplant lymphoproliferative disease (PTLD) who are refractory to rituximab-based regimens have extremely poor prognosis. Data is lacking in the setting of solid organ transplantation (SOT)-related PTLD treated with chimeric antigen receptor T-cell (CAR-T) therapy. Moreover, limited information is available on the influence of concomitant immunosuppressive drugs on CAR-T function. Here, we describe the clinical outcome in one PTLD patient and propose a strategy for tailoring immunosuppressive treatment and organ monitoring in patients with kidney allografts after CAR-T infusion. This report also reviews the limited published data in the setting of SOT-related PTLD treated…

Immunohistochemical markers for histopathological diagnosis and differentiation of acute cutaneous graft‐versus‐host disease

2021

Graft-versus-host disease (GvHD) is a major complication following stem-cell or solid-organ transplantation. Accurate diagnosis of cutaneous GvHD is challenging, given that drug eruptions and viral rashes may present with similar clinical/histological manifestations. Specific markers are not available. We performed the histological examination of biopsy samples from acute GvHD (aGvHD; n = 54), Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN; n = 27), maculopapular drug eruption (MDE; n = 26) and healthy controls (n = 26). Samples of aGvHD showed a decrease in Langerhans cells (LC, p = 0.0001) and an increase in macrophages (MΦ, p = 0.0001) compared to healthy skin. Compared to …

2015

BACKGROUND Expensive pharmaceuticals are a major reason for cost intensive health care systems. Long-term immunosuppressive therapy plays a relevant role after organ transplantation. Patents of original drugs have expired and cheaper products are available. Little data are available regarding efficacy and safety of generic immunosuppressive agents. METHODS In this prospective study, 25 patients, who were clinically stable for a minimum of 2 years after liver transplantation, were converted from the original formulations of tacrolimus (TAC) and mycophenolate mofetil to the generics Tacpan (TAP) and Mowel (MOW). Patients were followed-up for 6 months. Results were compared retrospectively to …

Pseudomembranous invasive tracheobronchial aspergillosis.

2004

Invasive aspergillus tracheobronchitis is a rare infectious complication in severely immunocompromised patients who are generally neutropenic with haematological diseases, AIDS, or after solid organ transplantation. However, a few cases have been reported with no apparent severe compromise in the host defences.1 Aspergillus tracheobronchitis varies from localised tracheobronchitis …

Outcomes of Donor-Recipient Gender Mismatched Lung Transplantation in the Eurotransplant Area

2019

Purpose An effect of donor-recipient gender mismatching on long-term survival outcomes following organ transplantation has been postulated but remains controversial. We aimed to investigate the influence of gender mismatches on long-term survival after lung transplantation in the Eurotransplant area. Methods In this retrospective, multicentre study in the Eurotransplant area, all lung transplants performed from DBD lungs in the period from 01.01.2000 until 31.12.2015 were included. A total of 7688 lung transplant recipients (≥ 14 years old) for long-term survival and the effect of gender mismatches (Kaplan-Meier, multivariate regression). Results More men (4079; 52 %) were transplanted comp…

An unusually high substitution rate in transplant-associated BK polyomavirus in vivo is further concentrated in HLA-C-bound viral peptides

2018

Infection with human BK polyomavirus, a small double-stranded DNA virus, potentially results in severe complications in immunocompromised patients. Here, we describe the in vivo variability and evolution of the BK polyomavirus by deep sequencing. Our data reveal the highest genomic evolutionary rate described in double-stranded DNA viruses, i.e., 10−3–10−5 substitutions per nucleotide site per year. High mutation rates in viruses allow their escape from immune surveillance and adaptation to new hosts. By combining mutational landscapes across viral genomes with in silico prediction of viral peptides, we demonstrate the presence of significantly more coding substitutions within predicted cog…

Long-term Challenges After Solid Organ Transplantation

2018

Human genetic polymorphisms and risk of viral infection after solid organ transplantation.

2021

The immune system plays a key role in the host defense against viral pathogens. A signaling cascade is activated upon infection involving a variety of molecules such as pattern-recognition receptors (PRRs), interleukins or antiviral interferons. Long-term immunosuppression after solid organ transplantation (SOT) mainly abrogates adaptive T-cell-mediated responses, thus highlighting the relative contribution of innate immunity. Single-nucleotide polymorphisms (SNPs) within genes coding for PRRs or soluble mediators have been associated with differential susceptibility to viral infections among SOT recipients. A protective effect against cytomegalovirus (CMV) infection or disease has been att…

RATIONALE FOR THE USE OF ANTIOXIDANT VITAMINS IN CLINICAL ORGAN TRANSPLANTATION

1996

Organ transplantation in China: concerns remain

2015

On Dec 3, 2014, Jiefu Huang, Director of the China Organ Donation and Transplant Committee and former Vice Minister of Health, announced that, from Jan 1, 2015, only voluntarily donated organs would be used for transplantation. Worldwide media reported that China would stop use of executed prisoners as an organ source. The Editorial1 in The Lancet interpreted the announcement in a similar manner; unfortunately, this interpretation does not reflect the reality.