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renal allograft

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https://www.readbyqxmd.com/read/29771270/effect-of-conversion-from-calcineurin-inhibitors-to-everolimus-on-hepatitis-c-viremia-in-adult-kidney-transplant-recipients
#1
Larissa Sgaria Pacheco, Valter Duro Garcia, Ronivan Luis Dal Prá, Bruna Doleys Cardoso, Mariana Ferras Rodrigues, Helen Kris Zanetti, Gisele Meinerz, Jorge Neumann, Diego Gnatta, Elizete Keitel
INTRODUCTION: Currently, there is no specific immunosuppressive protocol for hepatitis C (HCV)-positive renal transplants recipients. Thus, the aim of this study was to evaluate the conversion effect to everolimus (EVR) on HCV in adult kidney recipients. METHOD: This is an exploratory single-center, prospective, randomized, open label controlled trial with renal allograft recipients with HCV-positive serology. Participants were randomized for conversion to EVR or maintenance of calcineurin inhibitors...
May 14, 2018: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/29767455/ureterocalicostomy-with-lower-pole-nephrectomy-in-a-renal-transplant-a-case-report
#2
Rafael Haddad Astolfi, Guilherme Alonso Daud Patavino, Claudia Felipe Rosso, Helio Tedesco Silva Junior, Jose Osmar Medina Pestana, Alex Elton Meller, Wilson Aguiar
As the number of kidney transplants continues to rise, so does the number and complexities of surgical-related complications, which may be associated with increased morbidity and potentially graft loss. Ureteral stenosis, the most prevalent urological complication, may require diverse techniques for surgical correction depending on several recipient and graft abnormalities. Here we report the surgical and clinical outcomes of a 62-year-old man with a postransplant pyeloureterostomy stricture successfully treated with ureterocalycostomy after a lower pole nephrectomy...
May 16, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29766776/bk-polyomavirus-immune-response-with-stress-on-bk-specific-t-cells
#3
Hany M El Hennawy
Polyomavirus-associated nephropathy is a pertinent cause of poor renal allograft survival. Absence of defensive immunity toward BK polyomavirus may favor the occurrence of BK polyomavirus-active infection and influence the progression to polyomavirus-associated nephropathy. Humoral immune responses may offer incomplete protection. In this review, available data on both humoral and cellular immunity were examined, with a concentration on BK polyomavirus-specific T cells; in addition, their roles in BK polyomavirus cellular immune response and immunotherapy were discussed...
May 16, 2018: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29765590/a-case-of-rhabdomyolysis-after-kidney-transplantation-successfully-managed-with-intensive-continuous-dialysis
#4
Rauf Shahbazov, Michael Fox, Jennifer L Alejo, Malik A Anjum, Feredun Azari, Alden Doyle, Avinash Agarwal, Kenneth L Brayman
Rhabdomyolysis is characterized by muscle cell death which can result in acute kidney injury from pigment nephropathy. We present a patient who developed rhabdomyolysis immediately after deceased donor kidney transplantation surgery and was managed with continuous renal replacement therapy that resulted in successful salvage of the kidney allograft. Patients who develop acute kidney failure requiring renal replacement therapy generally have a poor prognosis. It is worth noting that while continuous veno-venous hemofiltration (CVVHF) offers greater volume support and continuous clearance compared to hemodialysis (HD), recent studies have demonstrated no clinically significant improvement in clinical outcome between the two...
April 2018: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29765170/bk-virus-induced-renal-allograft-nephropathy
#5
Karel Krejci, Tomas Tichy, Jana Bednarikova, Kamil Zamboch, Josef Zadrazil
BK virus nephropathy (BKVN) is a serious opportunistic infection threatening renal function especially during the first year after transplantation. Its incidence is now on the rise and is closely related to the level of the recipient's immune system inhibition. This is more intensive with current trends in transplantation medicine, where more potent immunosuppressive protocols are used and more aggressive antirejection therapy is applied. In the absence of BK virus (BKV) specific therapy and limited treatment options for advanced BKVN, active screening of BKV replication and subsequent preemptive adjustment of immunosuppression are essential measures to prevent BKVN...
May 16, 2018: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/29757901/revascularization-time-in-liver-transplantation-independent-prediction-of-inferior-short-and-long-term-outcomes-by-prolonged-graft-implantation
#6
Bettina M Buchholz, Undine A Gerlach, Vishnu V Chandrabalan, James Hodson, Bridget K Gunson, Hynek Mergental, Paolo Muiesan, John R Isaac, Keith J Roberts, Darius F Mirza, M Thamara Pr Perera
BACKGROUND: Strategies for successful transplantation are much needed in the era of organ shortage and there has been a resurgence of interest on the impact of revascularization time (RT) on outcomes in liver transplantation (LT). METHODS: All primary LT performed in Birmingham between 2009 and 2014 (n=678) with portal reperfusion first were stratified according to RT (<44 vs. ≥44 min) and graft quality (SLG, Donor risk index [DRI] <2.3 vs. MLG, DRI ≥2...
May 2, 2018: Transplantation
https://www.readbyqxmd.com/read/29757021/advagraf%C3%A2-with-or-without-an-induction-therapy-for-de-novo-kidney-transplant-recipients
#7
Johan Noble, Thomas Jouve, Lionel Rostaing, Paolo Malvezzi
Cornerstone immunosuppressive therapy currently relies on immediate-release tacrolimus, a calcineurin inhibitor (CNI) that is potentially nephrotoxic and is more diabetogenic than cyclosporine A. Two new formulations of tacrolimus have been launched: an extended-release formulation (Advagraf®/Astagraf XL®, Astellas company) and a long-lasting formulation (Envarsus®, Veloxis company). Area covered: Herein, we assess the efficacy of an extended-release formulation of tacrolimus (Advagraf®/Astagraf XL®) used in conjunction with or without an induction therapy (i...
May 14, 2018: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/29754702/evaluating-renal-transplant-status-using-viscoelastic-response-visr-ultrasound
#8
Md Murad Hossain, Mallory R Selzo, Robert M Hinson, Leslie M Baggesen, Randal K Detwiler, Wui K Chong, Lauren M Burke, Melissa C Caughey, Melrose W Fisher, Sonya B Whitehead, Caterina M Gallippi
Chronic kidney disease is most desirably and cost-effectively treated by renal transplantation, but graft survival is a major challenge. Although irreversible graft damage can be averted by timely treatment, intervention is delayed when early graft dysfunction goes undetected by standard clinical metrics. A more sensitive and specific parameter for delineating graft health could be the viscoelastic properties of the renal parenchyma, which are interrogated non-invasively by Viscoelastic Response (VisR) ultrasound, a new acoustic radiation force (ARF)-based imaging method...
May 10, 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29754418/comprehensive-outcomes-after-lung-retransplantation-a-single-center-review
#9
Kieran Halloran, Meghan Aversa, Kathryn Tinckam, Tereza Martinu, Matthew Binnie, Cecilia Chaparro, Chung-Wai Chow, Tom Waddell, Karen McRae, Andrew Pierre, Marc de Perrot, Kazuhiro Yasufuku, Marcelo Cypel, Shaf Keshavjee, Lianne G Singer
INTRODUCTION: Lung retransplantation is an important therapy for a growing population of lung transplant recipients with graft failure, but detailed outcome data are lacking. METHODS: We conducted a retrospective cohort study of adult lung retransplant in the Toronto Lung Transplant Program from 2001 to 2013 (n=38). We analyzed the post-operative course, graft function, renal function, microbiology, donor specific antibodies (DSA), quality of life and survival compared to a control cohort of primary transplant recipients matched for age and era...
May 13, 2018: Clinical Transplantation
https://www.readbyqxmd.com/read/29754130/urothelial-carcinoma-of-an-allograft-ureter-10-years-after-deceased-donor-kidney-transplantation
#10
Kevin P Gaughan, Usman Haroon, Niall F Davis, Ponnusamy Mohan
The incidence of urothelial carcinoma (UC; formerly transitional cell carcinoma) is higher among renal transplant recipients compared with the general population. Upper urinary tract UC (UUT-UC) of allograft urothelium is a rare event with approximately 40 cases reported in the literature. Herein, we describe the clinical presentation and management of UUT-UC in a transplant ureter 10 years after deceased donor kidney transplantation.
May 12, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29749461/upregulation-of-allograft-inflammatory-factor%C3%A2-1-expression-and-secretion-by-macrophages-stimulated-with-aldosterone-promotes-renal-fibroblasts-to-a-profibrotic-phenotype
#11
Yushu Li, Xingzhi Wang, Lei Zhang, Xueying Yuan, Jianbing Hao, Jie Ni, Lirong Hao
Macrophages have been identified as a key cell type in the pathogenesis of renal interstitial fibrosis (RIF). However, the mechanism through which macrophages drive fibrosis remains unclear. The current study focuses on the effects and possible underlying mechanism of allograft inflammatory factor‑1 (AIF‑1), an inflammation‑responsive scaffold protein expressed and secreted by macrophages, in promoting fibroblasts to a profibrotic phenotype. In vivo experiments indicated that AIF‑1, CD68 and α‑smooth muscle actin (α‑SMA) were upregulated in kidney tissues of mice subjected to unilateral ureteric obstruction, while their expressions were inhibited by an aldosterone receptor antagonist, spironolactone...
May 10, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29746495/tacrolimus-intra-patient-variability-is-not-associated-with-chronic-active-antibody-mediated-rejection
#12
Kasia A Sablik, Marian C Clahsen-van Groningen, Dennis A Hesselink, Teun van Gelder, Michiel G H Betjes
BACKGROUND: Chronic active antibody mediated rejection (c-aABMR) is a major cause of long-term kidney allograft loss. It is hypothesized that frequent sub-therapeutic exposure to immunosuppressive drugs, in particular tacrolimus (Tac), is a risk factor for the development of c-aABMR. The intra-patient variability (IPV) in Tac exposure may serve as a substitute biomarker for underexposure and/or non-adherence. In this study, the association between Tac IPV and the development of c-aABMR was investigated...
2018: PloS One
https://www.readbyqxmd.com/read/29738696/serum-human-epididymis-secretory-protein-4-as-a-potential-biomarker-of-renal-fibrosis-in-kidney-transplantation-recipients
#13
Jinmei Luo, Fen Wang, Jianxin Wan, Zhuangjian Ye, Chumei Huang, Yuesu Cai, Min Liu, Ben-Quan Wu, Laisheng Li
BACKGROUND: Renal fibrosis remains an important cause of kidney allograft failure. The objective of this study was to evaluate the performance of serum human epididymis secretory protein 4 (HE4) as a biomarker for renal fibrosis in kidney transplant recipients. METHODS: A total of 103 kidney transplantation patients were enrolled in this study, and serum HE4 concentrations were detected using the chemiluminescent microparticle immunoassay. Renal biopsy was carried out, and histological findings were assessed by immunohistochemistry...
May 5, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29738028/quantitative-detection-of-bk-virus-in-kidney-transplant-recipients-a-prospective-validation-study
#14
Gabriel Godinho Pinto, José Antonio Tesser Poloni, Diego D'Avila Paskulin, Fabio Spuldaro, Fernanda de Paris, Afonso Luís Barth, Roberto Ceratti Manfro, Elizete Keitel, Alessandro C Pasqualotto
INTRODUCTION: BK virus (BKV) infection in renal transplant patients may cause kidney allograft dysfunction and graft loss. Accurate determination of BKV viral load is critical to prevent BKV-associated nephropathy (BKVAN) but the cut-off that best predicts BKVAN remains controversial. OBJECTIVE: To evaluate the performance of a commercial and an in-house qPCR test for quantitative detection of BK virus in kidney transplant recipients. METHODS: This was a prospective study with kidney transplant recipients from two large university hospitals in Brazil...
April 19, 2018: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/29736363/pushing-boundaries-robotic-nephrectomy-of-an-auto-transplanted-kidney-for-recurrent-renal-cell-carcinoma
#15
Belinda Li, Eric J Kirshenbaum, Parth Patel, Alex Gorbonos
Advances in robotic technology continue to expand the boundaries of minimally invasive approaches in transplant surgery. A single report has previously described the use of the robotic approach in transplant nephrectomy for a failed allograft. Our objective is to describe our technique and experience for the first reported robotic nephrectomy of an auto-transplanted solitary kidney for a recurrence of renal cell carcinoma (RCC). We highlight technical considerations during allograft mobilization and hilum dissection with the additional demands of a previously operated auto-transplant kidney...
March 6, 2018: Curēus
https://www.readbyqxmd.com/read/29731924/the-spectrum-of-histopathological-changes-in-the-renal-allograft-a-12-months-protocol-biopsy-study
#16
Galina Severova-Andreevska, Ladislava Grcevska, Gordana Petrushevska, Koco Cakalaroski, Aleksandar Sikole, Olivera Stojceva-Taneva, Ilina Danilovska, Ninoslav Ivanovski
INTRODUCTION: Renal transplantation became a routine and successful medical treatment for Chronic Kidney Disease in the last 30 years all over the world. Introduction of Luminex based Single Antigen Beads (SAB) and recent BANFF consensus of histopathological phenotypes of different forms of rejection enables more precise diagnosis and changes the therapeutic approach. The graft biopsies, protocol or cause, indicated, remain a golden diagnostic tool for clinical follow up of kidney transplant recipients (KTR)...
April 15, 2018: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29731067/comorbidities-can-predict-mortality-of-kidney-transplant-recipients-comparison-with-the-charlson-comorbidity-index
#17
J Y Park, M H Kim, E J Bae, S Kim, D K Kim, K W Joo, Y S Kim, J P Lee, Y H Kim, C S Lim
BACKGROUND: Comorbid conditions are important in the survival of kidney transplant recipients. The weights assigned to comorbidities to predict survival may vary based on the type of index disease and advances in the management of comorbidities. We aimed to develop a modified Charlson comorbidity index (CCI) in renal allograft recipients (mCCI-KT), thereby improving risk stratification for mortality. METHODS: A total of 3765 recipients in a multicenter cohort were included to develop a comorbidity score...
May 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29731061/impact-of-cigarette-smoking-on-living-kidney-donors
#18
Y E Yoon, H H Lee, J C Na, K H Huh, M S Kim, S I Kim, Y S Kim, W K Han
BACKGROUND: Smoking is known to result in a decline in renal allograft function and survival of recipients; however, the effect of smoking on living kidney donors remains unknown. In this study we evaluated the impact of cigarette smoking on renal function of kidney donors. METHODS: Among 1056 donors who underwent nephrectomy, 612 completed the 6-month follow-up protocol and were enrolled in the study. The association of smoking status, including pack-years smoking history, and postoperative renal function was evaluated...
May 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29731057/clinical-outcomes-of-kidney-transplantation-in-patients-with-biopsy-proven-glomerulonephritis
#19
H Park, W Y Park, S S Kang, S M Yeo, S Han, S B Park, K Jin
BACKGROUND: The clinical outcomes after kidney transplantation (KT) according to the types of glomerulonephritis (GN) as the cause of end-stage renal disease (ESRD) are various, but there are not many studies on this. METHODS: Among 1,253 patients who had KT between November 1982 and January 2017, 183 recipients with biopsy-proven GN as the primary cause of ESRD were enrolled. We analyzed the incidence of recurrent GN and the factors associated with recurrence and graft and patient survivals...
May 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29731056/clinical-significance-of-macrophage-polarization-in-antibody-mediated-rejection-of-renal-allograft
#20
J Kim, S-E Choi, B J Lim, Y S Kim, K H Huh, J Lee, S I Kim, M S Kim, H J Jeong
BACKGROUND: The significance of proinflammatory M1 (classically activated) and profibrotic M2 (alternatively activated) macrophages in antibody-mediated rejection (ABMR) after kidney transplantation has not been investigated. METHODS: Fifty-five biopsy-confirmed ABMR samples were stained with MRP 8/14 (a marker of M1 macrophages) and CD163 (a marker of M2 macrophages), and positive cells were counted in glomeruli and the tubulointerstitium, respectively. Patients were classified into M1 and M2 polarization groups according to the glomerular and tubulointerstitial M1:M2 ratio, and the results were compared with Banff scores, serum creatinine level, estimated glomerular filtration rate (eGFR), and graft survival...
May 2018: Transplantation Proceedings
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