Publications by authors named "Roesel M"

Heart failure (HF) is a common disease associated with high morbidity and mortality rates despite advanced pharmacological therapies. Heart transplantation remains the gold standard therapy for end-stage heart failure; however, its application is curtailed by the persistent shortage of donor organs. Over the past two decades, mechanical circulatory support, notably Left Ventricular Assist Devices (LVADs), have been established as an option for patients waiting for a donor organ.

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Mitral valve prolapse (MVP) is common among heart valve disease patients, causing severe mitral regurgitation (MR). Although complications such as cardiac arrhythmias and sudden cardiac death are rare, the high prevalence of the condition leads to a significant number of such events. Through next-generation gene sequencing approaches, predisposing genetic components have been shown to play a crucial role in the development of MVP.

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Article Synopsis
  • The study investigates the impact of older donor organs on younger recipients in organ transplantation, hypothesizing that aging donor organs can induce cellular senescence in younger mice.
  • Results showed that young and middle-aged mice receiving older organs exhibited increased senescent cells in various tissues and experienced diminished physical performance and cognitive abilities within 30 days.
  • Treatment with senolytics, which target and eliminate senescent cells, was found to reduce harmful effects of the old organs and improve physical performance in younger recipients, suggesting a potential strategy for enhancing transplant outcomes.
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Article Synopsis
  • Machine perfusion (EVMP) is a new method used for preserving solid organs, particularly in organ transplants, that improves upon traditional cold preservation by allowing for better monitoring and reducing damage during preservation.
  • This technique has broadened the donor pool by including organs from expanded criteria donors, such as those from circulatory death cases, and shows potential for treating and modifying diseased organs.
  • The review discusses key differences in EVMP applications for various organs (kidney, liver, lung, heart) and explores both the benefits and limitations of this technique, highlighting the need for interdisciplinary approaches in its development.
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Biological sex affects immunity broadly, with recognized effects on the incidence and severity of autoimmune diseases, infections, and malignancies. Consequences of sex on alloimmunity and outcomes in solid organ transplantation are less well defined. Clinical studies have shown that donor and recipient sex independently impact transplant outcomes, which are further modified by aging.

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Myeloid-derived suppressor cells (MDSCs) are naturally occurring leukocytes that develop from immature myeloid cells under inflammatory conditions that were discovered initially in the context of tumor immunity. Because of their robust immune inhibitory activities, there has been growing interest in MDSC-based cellular therapies for transplant tolerance induction. Indeed, various pre-clinical studies have introduced in vivo expansion or adoptive transfer of MDSC as a promising therapeutic strategy leading to a profound extension of allograft survival due to suppression of alloreactive T cells.

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Purpose Of Review: Ex-situ machine perfusion for both heart (HTx) and lung transplantation (LuTx) reduces ischemia-reperfusion injury (IRI), allows for greater flexibility in geographical donor management, continuous monitoring, organ assessment for extended evaluation, and potential reconditioning of marginal organs. In this review, we will delineate the impact of machine perfusion, characterize novel opportunities, and outline potential challenges lying ahead to improve further implementation.

Recent Findings: Due to the success of several randomized controlled trials (RCT), comparing cold storage to machine perfusion in HTx and LuTx, implementation and innovation continues.

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Purpose Of Review: Older donors have the potential to close the gap between demand and supply in solid organs transplantation. Utilizing older organs, at the same time, has been associated with worse short- and long-term outcomes. Here, we introduce potential mechanisms on how treatments during machine perfusion (MP) may safely improve the utilization of older organs.

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Myeloid-derived suppressor cells (MDSC) are defined as a group of myeloid cells with potent immunoregulatory functions that have been shown to be involved in a variety of immune-related diseases including infections, autoimmune disorders, and cancer. In organ transplantation, MDSC promote tolerance by modifying adaptive immune responses. With aging, however, substantial changes occur that affect immune functions and impact alloimmunity.

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Transplant centers around the world have been using extended criteria donors to remedy the ongoing demand for lung transplantation. With a rapidly aging population, older donors are increasingly considered. Donor age, at the same time has been linked to higher rates of lung ischemia reperfusion injury (IRI).

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Purpose: Treatment of patients with primary and secondary liver tumors remains challenging. This study analyzes the efficacy and safety of transarterial radioembolization (TARE) combined with CT-guided high-dose-rate interstitial brachytherapy (CT-HDRBT) for the treatment of primary and secondary liver tumors.

Patients And Methods: A total of 77 patients (30 female) with various liver malignancies were treated.

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Purpose: The aim of this study was to describe clinical signs and complications of Fuchs uveitis syndrome (FUS) with onset in childhood.

Methods: Ophthalmologic findings and complications in patients with FUS becoming manifest before the age of 16 years were analyzed in a retrospective study at a tertiary referral uveitis center. Inclusion criteria were the presence of pathognomonic FUS findings at any time point and exclusion of any systemic immune-mediated or infectious disease.

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Introduction: Secondary hyperparathyroidism develops in nearly all patients with end-stage renal disease. Parathyroidectomy is often performed when medical therapy fails. The most common postoperative complication, hungry bone syndrome (HBS), requires early recognition and treatment.

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Background/aims: Secondary hyperparathyroidism (sHPT) is known as a very common complication in patients with chronic kidney disease, and G-protein-coupled calcium-sensing receptor (CaSR), Vitamin D receptor (VDR) and Fibroblast growth factor receptor (FGFR)/Klotho complexes seem to be involved in its development.

Methods: Hyperplastic parathyroid glands from 70 sHPT patients and normal parathyroid tissue from 7 patients were obtained during parathyroidectomy. Conventional morphological and immunohistochemical analysis of parathyroid glands was performed after dividing each slide in a 3x3 array.

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The presentation of patients with primary hyperparathyroidism is often atypical and ranges from normocalcemic, primary hyperparathyroidism to severe, symptomatic hypercalcemia. G-protein-coupled, calcium-sensing receptor (CaSR), vitamin D receptor (VDR), and fibroblast growth factor receptor (FGFR)/klotho complexes seem to be involved in the development of pHPT. Parathyroid glands from 53 patients with pHPT and normal parathyroid tissue from 7 patients were obtained during parathyroidectomy.

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Background: This study investigated the efficacy of everolimus, a potent inhibitor of T lymphocyte proliferation, for treating noninfectious uveitis. The study design was an open-label prospective trial.

Methods: Twelve patients with severe chronic uveitis (anterior and intermediate n = 9, panuveitis n = 3) refractive to cyclosporine A (CsA) received additional everolimus.

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Background: To compare the influence of central corneal thickness (CCT) during active anterior uveitis and after resolution on intraocular pressure (IOP) measurements by Goldmann applanation tonometry (GAT) and by dynamic contour tonometry (DCT).

Design: Prospective, single-center study including 30 consecutive patients with active unilateral uveitis.

Main Outcome Measure: CCT influence on GAT and DCT in active uveitis.

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Voclosporin, a novel immunomodulatory drug inhibiting the calcineurin enzyme, was developed to prevent organ graft rejection and to treat autoimmune diseases. The chemical structure of voclosporin is similar to that of cyclosporine A, with a difference in one amino acid, leading to superior calcineurin inhibition and less variability in plasma concentration. Compared with placebo, voclosporin may significantly reduce inflammation and prevent recurrences of inflammation in patients with noninfectious uveitis.

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Purpose: To evaluate the prognostic value of anterior chamber (AC) laser flare (LF) in uveitis associated with juvenile idiopathic arthritis (JIA).

Methods: Monocentre, retrospective study of 150 JIA children (girls n = 107, 71.3%) with unilateral or bilateral chronic anterior uveitis (statistical analysis of one eye per patient).

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Purpose: Management of uveitic cataract in patients with juvenile idiopathic arthritis (JIA) is challenging, and intraocular lens (IOL) implantation is controversial. This study investigated the outcome after minimally invasive surgery with IOL implantation.

Methods: Retrospective analysis after phacoemulsification with in-the-bag IOL implantation was performed in 16 patients (17 operations) with ANA-positive JIA-associated chronic uveitis.

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Purpose: Macular edema (ME) is a vision-limiting complication of uveitis. The aim of the present study was to identify risk factors for the development of ME.

Methods: This was an observational, cross-sectional study including 350 patients with noninfectious uveitis.

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Background: Data concerning the association of smoking and uveitis are limited. The aim of this study was to evaluate the effect of tobacco smoking on uveitis activity and complications of noninfections uveitis and the need for immunosuppressive therapy.

Methods: We conducted an observational cross-sectional study in 350 patients with noninfectious uveitis.

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