Senescence in chronic allograft nephropathy.

Senescence in chronic allograft nephropathy. Am J Physiol Renal Physiol. 2016 Jun 15;:ajprenal.00195.2016 Authors: Sosa Peña MD, Lopez-Soler R, Melendez JA Abstract Despite increasing numbers of patients on dialysis, the numbers of renal transplants performed yearly have remained relatively static. During the last 50 years, there have been many advances in the pharmacology of prevention of organ rejection. However, most patients will suffer from a slow but steady decline in renal function leading to graft loss. The most common cause of long-term graft loss is chronic allograft nephropathy (CAN). Therefore, elucidating and understanding the mechanisms involved in CAN is crucial for achieving better post-transplant outcomes. It is thought that the development of epithelial to mesenchymal transition (EMT) in proximal tubules is one of the first steps towards CAN, and has been shown to be a result of cellular senescence. Cells undergoing senescence acquire a senescence associated secretory phenotype (SASP) leading to the production of interleukin-1 alpha (IL-1α), which has been implicated in several degenerative and inflammatory processes including renal disease. A central mediator in SASP activation is the production of reactive oxygen species (ROS), which are produced in response to numerous physiologic and pathologic stimuli. This review explores the connection between SASP and the development of EMT/CAN in an effort to suggest future directi...
Source: Am J Physiol Renal P... - Category: Urology & Nephrology Authors: Tags: Am J Physiol Renal Physiol Source Type: research

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Contributors : Nissim Ben-Haim ; Tomer KaliskySeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensEnd-stage renal disease is a worldwide epidemic requiring renal replacement therapy. Harvesting tissue from failing kidneys and autotransplantation of expanded committed progenitors giving rise to renal parenchyma could theoretically allow for the restoration of kidney function delaying or preventing the need for dialysis or a renal allograft. Here we utilized healthy and end-stage human adult kidneys to robustly expand proliferative kidney epithelial cells and establish 3D-kidney epithelial ...
Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Homo sapiens Source Type: research
Purpose of review Despite improvement in short-term renal allograft survival in recent years, renal transplant recipients (RTR) have poorer long-term allograft outcomes. Allograft function slowly declines with periods of stable function similar to natural progression of chronic kidney disease in nontransplant population. Nearly all RTR transitions to failing renal allograft (FRG) period and require transition to dialysis. Conservative chronic kidney disease management before transition to end-stage renal disease is an increasingly important topic; however, there is limited data in RTR regarding how to delay dialysis init...
Source: Current Opinion in Nephrology and Hypertension - Category: Urology & Nephrology Tags: NOVEL THERAPEUTIC APPROACHES IN NEPHROLOGY AND HYPERTENSION: Edited by Kamyar Kalantar-Zadeh and Ekamol Tantisattamo Source Type: research
Abstract This paper aims to identify the reasons for choosing or refusing kidney transplantation as renal replacement therapy among patients with Chronic Kidney Disease (CKD). Data were collected through interviews with CKD patients treated by dialysis. Health professionals were also interviewed. A thematic analysis was used to analyze the data. Results show that various reasons account for CKD patients' refusal to have a kidney transplant: the perception of kidney transplantation as a renal replacement therapy without positive outcome, refusal to have an allograft. There are also situations such as the lack of or...
Source: Nephrologie and Therapeutique - Category: Urology & Nephrology Authors: Tags: Nephrol Ther Source Type: research
Authors: Agrawal N, Garg N, Adapa S, Cardarelli F Abstract Arteriovenous graft in the thigh is used not infrequently for hemodialysis. Outcomes with this lower extremity dialysis access are generally comparable to upper extremity access and superior to long-term catheter use. However, it could have significant implications in a patient getting a kidney transplant. Here we describe a case of thigh arteriovenous graft causing kidney allograft dysfunction in a new transplant recipient, and this resolved with graft ligation. PMID: 31547759 [PubMed - as supplied by publisher]
Source: The Journal of Vascular Access - Category: Surgery Tags: J Vasc Access Source Type: research
This article reviews clinical data and ongoing trials with C1-INH in transplant recipients, compares the results with those of other complement inhibitors, and summarizes potentially productive directions for future research.
Source: Transplantation - Category: Transplant Surgery Tags: Reviews Source Type: research
Abstract BACKGROUND: Growth differentiation factor-15 (GDF15) is markedly increased in end-stage kidney disease and has been related to increased mortality in patients on dialysis. We hypothesized that kidney transplantation would decrease both GDF15 and N-terminal pro-B-type natriuretic peptide (NT-proBNP) and that GDF-15 decrease relates to post-kidney transplantation allograft function. METHODS: End-stage kidney disease patients on dialysis awaiting a living donor kidney transplantation (n = 39), and those expected to be on the deceased donor waitlist for at least 12 months (n = 43) were enrolled...
Source: Clinical Biochemistry - Category: Biochemistry Authors: Tags: Clin Biochem Source Type: research
Abstract BACKGROUND AND OBJECTIVES: Patients who have failed a transplant are at increased risk of repeat transplant failure. We determined access to transplantation and transplant outcomes in patients with and without a history of transplant failure. DESIGN, SETTING, PARTICIPANTS, &MEASUREMENTS: In this observational study of national data, the proportion of waitlisted patients and deceased donor transplant recipients with transplant failure was determined before and after the new kidney allocation system. Among patients initiating maintenance dialysis between May 1995 and December 2014, the likelihood o...
Source: Clinical Journal of the American Society of Nephrology : CJASN - Category: Urology & Nephrology Authors: Tags: Clin J Am Soc Nephrol Source Type: research
Sonia Mehrotra, Raj Kumar Sharma, Manas R PatelIndian Journal of Nephrology 2019 29(4):242-247 Vitamin-D has immuno-modulatory properties besides its role in mineral and bone disorder (MBD) and could have a role in allograft outcome. Fifty-two chronic kidney disease patients on dialysis going for transplantation were prospectively studied before and after renal transplantation. FGF23, 25(OH) vitamin D, 1,25-Dihydroxyvitamin D, PTH, serum Ca, serum PO4, and e-GFR status were evaluated. Vitamin D deficiency was seen in 25.0% of recipients before transplant (26.09 ± 12.19 ng/mL) and in 48.1% at 6 months post-tra...
Source: Indian Journal of Nephrology - Category: Urology & Nephrology Authors: Source Type: research
Purpose of review The population of kidney transplant recipients with advanced chronic kidney disease is growing but their outcomes are poor and care is not standardized. There has been wide variety of research in recent years on different aspects of care in failing allografts, and these research findings may help the providers in optimizing care. The purpose of the review is to outline the challenges and opportunities in management of failing allograft, and provide tools for improvement. Recent findings This review summarizes the recent research in field of failing allograft including outcomes, immunosuppression, ris...
Source: Current Opinion in Organ Transplantation - Category: Surgery Tags: KIDNEY PANCREAS: Edited by Matthew Cooper Source Type: research
Kidney transplantation (KT) is the treatment of choice for end stage kidney disease , offering the highest survival benefit amongst all the different renal replacement therapies1. Long term renal allograft and patient survival have shown substantial improvements over time: however, death with a functioning allograft remains the leading cause of late allograft loss with cardiovascular disease (CVD) related deaths representing a major cause of mortality2. While recipients of kidney transplants have lower risk for CVD when compared to the 10-20 fold increased risk in patients with dialysis, their risk of CVD is substantially ...
Source: Kidney International - Category: Urology & Nephrology Authors: Tags: Policy Forum Source Type: research
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