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chronic allograft nephropathy

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https://www.readbyqxmd.com/read/28291548/the-role-of-interleukin-17a-in-the-pathogenesis-of-kidney-diseases
#1
REVIEW
Charlotte Cortvrindt, Reinhart Speeckaert, Alena Moerman, Joris R Delanghe, Marijn M Speeckaert
Being a member of the IL-17 family, comprising six structurally related ligands, IL-17A is a cytokine, produced by multiple cell types, such as CD4(+)αβ T cells, γδ T cells, natural killer cells, neutrophils, macrophages, dendritic cells, lymphoid tissue inducer cells, mast cells and plasma cells. IL-17A participates in tissue inflammation by inducing the expression of chemokines, proinflammatory cytokines and matrix metalloproteases. Besides its role in host defence against infectious diseases, IL-17A is involved in different autoimmune and inflammatory diseases...
March 10, 2017: Pathology
https://www.readbyqxmd.com/read/28281103/current-evidence-on-vitamin-d-deficiency-and-kidney-transplant-what-s-new
#2
REVIEW
Gerardo Sarno, Riccardo Nappi, Barbara Altieri, Giacomo Tirabassi, Emanuele Muscogiuri, Gianmaria Salvio, Stavroula A Paschou, Aristide Ferrara, Enrico Russo, Daniela Vicedomini, Cerbone Vincenzo, Andromachi Vryonidou, Silvia Della Casa, Giancarlo Balercia, Francesco Orio, Paride De Rosa
Kidney transplant is the treatment of choice for end-stage chronic kidney disease. Kidneys generate 1,25-dihydroxyvitamin D (calcitriol) from 25-hydroxyvitamin D (calcidiol) for circulation in the blood to regulate calcium levels. Transplant patients with low calcidiol levels have an increased risk of metabolic and endocrine problems, cardiovascular disease, type 2 diabetes mellitus, poor graft survival, bone disorders, cancer, and mortality rate. The recommended calcidiol level after transplant is at least 30 ng/mL (75 nmol/L), which could require 1000-3000 IU/d vitamin D3 to achieve...
March 9, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28260483/evaluation-of-indication-biopsies-%C3%A2-5-years-after-kidney-transplant-a-single-center-experience
#3
Erhan Tatar, Cenk Simsek, Funda Tasli, Veli Kursat Cayhan, Murat Karatas, Adam Uslu
OBJECTIVES: Rejection is a common cause of late graft dysfunction seen on biopsy studies. The aim of this study was to evaluate indication biopsy findings ? 5 years after kidney transplant and to assess the effectiveness of applied treatments. MATERIALS AND METHODS: Between January 2013 and December 2015, 30 patients who underwent renal transplant indication biopsies and were followed up for ≥ 6 months were evaluated retrospectively. A >30% increase in serum creatinine and/or development of > 1 g/day proteinuria was considered an acceptable indication for biopsy...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28260445/renal-impairment-and-complication-after-kidney-transplant-at-queen-rania-abdulla-children-s-hospital
#4
Reham Issa Almardini, Ghazi Mohamad Salita, Mahdi Qasem Farah, Issa Ahmad Katatbeh, Katibh Al-Rabadi
OBJECTIVES: Kidney transplant is the treatment of choice for end-stage renal disease, but it is not without complications. We review the medical cause of significant renal impairment and complications that developed after kidney transplant in pediatric patients who required hospital admission and intervention and/or who were followed between 2007 and 2016. MATERIALS AND METHODS: A retrospective noninterventional chart review study was conducted in pediatric patients who received a kidney transplant and/or followed at the nephrology clinic at Queen Rania Abdulla Children's Hospital between 2007 and 2016...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28260443/outcome-of-renal-transplant-in-recipients-with-vasculitis
#5
Samia Barbouch, Meriam Hajji, Raja Aoudia, Monther Ounissi, Asma Zammouri, Rym Goucha, Fathi Ben Hamida, Mohammed Mongi Bacha, Ezzedine Abderrahim, Taieb Ben Abdallah
OBJECTIVES: End-stage renal disease develops in a high percentage of patients with vasculitis, in whom kidney transplant has become a therapeutic option. However, limited data are available on the prognosis and outcomes after kidney transplant in these patients. We aimed to compare the long-term graft survival and graft function in 8 renal transplant recipients with vasculitis (granulomatosis with polyangiitis, microscopic polyangiitis, Goodpasture syndrome, and Henoch-Schonlein purpura) with the other kidney recipients at a single center...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28247521/combination-of-leflunomide-and-everolimus-for-treatment-of-bk-virus-nephropathy
#6
Juli Jaw, Prue Hill, David Goodman
BK nephropathy (BKN) is a common cause of graft dysfunction following kidney transplantation. Minimization of immunosuppressive therapy remains the first line of therapy, but this may lead to rejection and graft loss. In some cases, despite lowering immunosuppression, BK infection can persist, leading to chronic damage and kidney failure. Currently, there is no specific anti-BK viral therapy. Recent in vitro experiments have demonstrated a reduction in BK viral replication when infected cells are treated with the combination of Leflunomide and Everolimus...
April 2017: Nephrology
https://www.readbyqxmd.com/read/28242482/single-center-experience-of-subclinical-rejections-and-bk-nephropathies-by-kidney-allografts-surveillance-biopsies
#7
Beata Naumnik, Jolanta Kowalewska, Tomasz Hryszko, Jerzy Glowiński, Magdalena Durlik, Michal C Myśliwiec
PURPOSE: Acute rejection of the kidney allograft remains the most important factor affecting the long-term graft outcome and is a major predictor of development of chronic damage and graft loss. Several studies have shown that early detection and treatment of subclinical rejection episodes may be beneficial for the graft outcome. The role of protocol (surveillance) biopsies and the value of donor specific antibodies (DSA) monitoring are still debatable. METHODS: This is a prospective observational study involving seventeen kidney recipients transplanted in north-eastern part of Poland who underwent "zero", 3-month and 12-month allograft biopsies as well as DSA assessment...
February 24, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28221173/new-developments-in-transplant-proteomics
#8
Julie Ho, Patricia Hirt-Minkowski, John A Wilkins
PURPOSE OF REVIEW: Despite modern immunosuppression, renal allograft rejection remains a major contributor to graft loss. Novel biomarkers may help improve posttransplant outcomes through the early detection and treatment of rejection. Our objective is to provide an overview of proteomics, review recent discovery-based rejection studies, and explore innovative approaches in biomarker development. RECENT FINDINGS: Urine MMP7 was identified as a biomarker of subclinical and clinical rejection using two-dimensional liquid chromatography tandem-mass spectrometry (LC-MS/MS) and improved the overall diagnostic discrimination of urine CXCL10 : Cr alone for renal allograft inflammation...
February 17, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28219585/urinary-type-iii-procollagen-is-associated-with-chronic-allograft-dysfunction-and-predicts-graft-survival
#9
R Yılmaz, T Yıldırım, D E Baydar, B Altun, Y Erdem
BACKGROUND: Chronic allograft dysfunction (CAD) is the most important clinical problem in solid organ transplantation. Interstitial fibrosis and tubular atrophy contribute to long-term renal allograft failure. Urinary type III procollagen N-terminal propeptide (PIIINP), has been shown to associate fibrotic processes. METHODS: One hundred sixty patients with CAD who underwent allograft biopsies were evaluated, and 52 patients with chronic or sclerosing allograft nephropathy were enrolled in the study...
March 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28128720/surgical-complications-after-pediatric-renal-transplant
#10
Hakan Sözen, Kibriya Fidan, Onur Özen, Oğuz Söylemezoğlu, Aydın Dalgıç
OBJECTIVES: Renal transplant is the most appropriate treatment for both adult and pediatric patients with end-stage renal failure. Here, we analyzed surgical complications after pediatric renal transplant at our center. MATERIALS AND METHODS: We retrospectively analyzed data from patient files and hospital charts of pediatric patients who had renal transplant at our center (Gazi University, Ankara, Turkey). Our immunosuppression protocol, a calcineurin inhibitor-based triple regimen, was applied to all recipients (steroids, mycophenolic acid)...
January 27, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28100499/gremlin1-plays-a-key-role-in-kidney-development-and-renal-fibrosis
#11
Rachel H Church, Imran Ali, Mitchel Tate, Deborah Lavin, Arjun Krishnakumar, Helena M Kok, Roel Goldschmeding, Finian Martin, Derek Brazil
Grem1, an antagonist of bone morphogenetic proteins, plays a key role in embryogenesis. A highly specific temporospatial gradient of Grem1 and BMP signalling is critical to normal lung, kidney and limb development. Grem1 levels are increased in renal fibrotic conditions including acute kidney injury, diabetic nephropathy, chronic allograft nephropathy and immune glomerulonephritis. A small number of grem1-/- whole body knockout mice on a mixed genetic background (8 %) are viable, with a single, enlarged left kidney and grossly normal histology...
January 18, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28088951/-noninvasive-diagnostic-and-predictive-value-in-renal-transplant-recipients-with-acute-rejection-by-measurement-of-urine-fractalkine
#12
D J Chen, W H Peng, H Jiang, H F Huang, J Y Wu, H P Wang, J H Chen
Objective: To investigate the relationship between early-stage renal acute rejection(AR) and the level of Fractalkine in urine, explore the diagnostic and noninvasive monitoring value in early stage after transplantation by measurement of urine Fractalkine. Methods: Urine samples were examined from renal transplant patients between January 2006 and October 2009. A total of 155 patients were enrolled, including 49 with biopsy-proved AR, 58 patients with stable renal function and no abnormal histological findings, 10 patients with subclinical rejection in protocol biopsy, 9 patients with biopsy-proven acute tubular necrosis and 29 patients with biopsy-proven chronic allograft nephropathy...
January 10, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28058220/tacrolimus-confers-lower-acute-rejection-rates-and-better-renal-allograft-survival-compared-to-cyclosporine
#13
Mahmoud Kamel, Manish Kadian, Titte Srinivas, David Taber, Maria Aurora Posadas Salas
AIM: To compare the impact of tacrolimus (FK) and cyclosporine (CYA) on acute rejection and graft survival and to assess the predominant causes of graft loss between patients receiving these two calcineurin inhibitors (CNIs). METHODS: Retrospective review of 1835 patients who received a kidney transplant (KTX) between 1999-2012. Patients were grouped based on initial CNI utilized: 1195 in FK group, 640 in CYA group. Data on baseline characteristics, clinical outcomes, and causes of graft loss in both groups were analyzed...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/27965714/doppler-ultrasound-in-kidney-diseases-a-key-parameter-in-clinical-long-term-follow-up
#14
REVIEW
Leonardo Spatola, Simeone Andrulli
Doppler ultrasound has been extensively used in detecting reno-vascular diseases, showing to be a non-invasive, safe, low cost and repeatable tool. The Renal Resistive Index (RRI) [(peak systolic velocity - end diastolic velocity)/peak systolic velocity] is a semi-quantitative index derived by Doppler evaluation of renal vascular bed. Normally RRI is in the range of 0.47-0.70, it increases with aging and, usually, it shows a difference between the two kidneys less than 5-8 %. RRI is an important prognostic marker in chronic kidney diseases (CKD), both in diabetic and non-diabetic kidney diseases, because, in longitudinal prospective studies, it significantly correlated with hemodynamic (ABPM, SBP, DBP, pulse pressure) and histopathological parameters (glomerular sclerosis, arteriolosclerosis, interstitial fibrosis/tubular atrophy, interstitial infiltration)...
December 2016: Journal of Ultrasound
https://www.readbyqxmd.com/read/27941433/kidney-fibrosis-origins-and-interventions
#15
Thomas Vanhove, Roel Goldschmeding, Dirk Kuypers
All causes of renal allograft injury, when severe and/or sustained, can result in chronic histological damage of which interstitial fibrosis and tubular atrophy are dominant features. Unless a specific disease process can be identified, what drives interstitial fibrosis and tubular atrophy progression in individual patients is often unclear. In general, clinicopathological factors known to predict and drive allograft fibrosis include graft quality, inflammation (whether "nonspecific" or related to a specific diagnosis), infections, such as polyomavirus-associated nephropathy, calcineurin inhibitors (CNI), and genetic factors...
April 2017: Transplantation
https://www.readbyqxmd.com/read/27927780/genomic-analysis-of-kidney-allograft-injury-identifies-hematopoietic-cell-kinase-as-a-key-driver-of-renal-fibrosis
#16
Chengguo Wei, Li Li, Madhav C Menon, Weijia Zhang, Jia Fu, Brian Kidd, Karen L Keung, Christopher Woytovich, Ilana Greene, Wenzhen Xiao, Fadi Salem, Zhengzi Yi, John Cijiang He, Joel T Dudley, Barbara Murphy
Renal fibrosis is the common pathway of progression for patients with CKD and chronic renal allograft injury (CAI), but the underlying mechanisms remain obscure. We performed a meta-analysis in human kidney biopsy specimens with CAI, incorporating data available publicly and from our Genomics of Chronic Renal Allograft Rejection study. We identified an Src family tyrosine kinase, hematopoietic cell kinase (Hck), as upregulated in allografts in CAI. Querying the Kinase Inhibitor Resource database revealed that dasatinib, a Food and Drug Administration-approved drug, potently binds Hck with high selectivity...
December 7, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27915964/posttransplant-de-novo-hepatitis-c-virus-infection-in-renal-transplant-recipients-its-impact-on-morbidity-and-mortality
#17
Farina M Hanif, S Muddasir Laeeq, Nasir Hassan Luck, Tahir Aziz, Zaigham Abbas, Muhammed Mubarak
OBJECTIVES: The clinical effects of hepatitis C virus infection acquired after transplant have not been thoroughly studied. We aimed to study hepatitis C virus-related morbidity and mortality with de novo hepatitis C virus infection after renal transplant. MATERIALS AND METHODS: Data from mortality files were retrospectively collected from January 2011 to January 2015. Patients were divided into 2 groups: hepatitis C virus positive (group A) and hepatitis C virus negative (group B)...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/27885250/cxc-chemokine-receptor-4-cxcr4-antagonist-a-novel-pathway-to-prevent-chronic-allograft-nephropathy
#18
Yue Xu, Qiang Zhang, Wenrui Xue, Song Zeng, Zijian Zhang, Xiaodong Zhang, Xiaopeng Hu
BACKGROUND Chronic allograft nephropathy (CAN) remains a major problem for long-term graft survival and different pathways participate in its development. CXC chemokine receptor 4 (CXCR4) is significantly upregulated following renal injury and fibrotic response. We investigated the effect of AMD3100, a CXCR4 antagonist, on the development of CAN in rat models. MATERIAL AND METHODS CAN rat models (n=20) were established using male Fisher 344 to Lewis rats. Rats in the experimental group (n=10) were treated with AMD3100 (1 mg/kg/day subcutaneously, 0-12 weeks), rats in the control group (n=10) were treated with saline...
November 25, 2016: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/27863213/tubular-cytoplasmic-expression-of-zinc-finger-protein-snai1-in-renal-transplant-biopsies-a-sign-of-diseased-epithelial-phenotype
#19
Marco Prunotto, Lyubov Chaykovska, Massimo Bongiovanni, Milo Frattini, Thomas Cagarelli, Franziska Weibel, Maurizio Bruschi, Antonio Garcia de Herreros, Solange Moll
The aim of the present study was to analyze in vivo the role of zinc finger protein SNAI1 (SNAI1) on renal fibrosis. Unilateral ureteral obstruction injury was induced in Snai1 knockout mice. Snai1 gene deletion was, however, only partial and could therefore not be correlated to reduced fibrosis. Expression of SNAI1 protein and epithelial-mesenchymal transformation markers was then assessed in human chronic allograft nephropathy biopsy specimens. Significant up-regulation of SNAI1 protein was detected within cytoplasm of proximal tubules localized, for some of them, near foci of fibrosis and tubular atrophy...
January 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/27847221/chronic-allograft-injury-mechanisms-and-potential-treatment-targets
#20
REVIEW
Leonardo V Riella, Arjang Djamali, Julio Pascual
Improving long-term graft survival remains one of the critical challenges facing kidney transplantation since a great portion of kidney grafts are lost by 10years after transplantation. Understanding the causes of chronic allograft injury and providing timely therapeutic interventions are essential for improving these outcomes. In this review, we will discuss the recent data that emerged turning down calcineurin inhibitors as the primary cause of long-term graft injury and highlighting the increased importance of non-compliance, antibody-mediated injury, disease recurrence, and BK nephropathy as culprits...
January 2017: Transplantation Reviews
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