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chronic renal allograft dysfunction

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https://www.readbyqxmd.com/read/28396121/antagonism-of-profibrotic-microrna-21-improves%C3%A2-outcome-of-murine-chronic-renal-allograft-dysfunction
#1
Celina Schauerte, Anika Hübner, Song Rong, Shijun Wang, Nelli Shushakova, Michael Mengel, Angela Dettling, Claudia Bang, Kristian Scherf, Malte Koelling, Anette Melk, Hermann Haller, Thomas Thum, Johan M Lorenzen
Chronic renal allograft dysfunction (CAD) is a major limiting factor of long-term graft survival. It is characterized by interstitial fibrosis and tubular atrophy. The underlying pathomechanisms are incompletely understood. MicroRNAs are powerful regulators of gene expression and may have an impact on various diseases by direct mRNA decay or translational inhibition. A murine model of allogenic kidney transplantation was used resulting in CAD at 6 weeks after kidney transplantation. We identified fibrosis-associated miR-21a-5p by whole miRNAome expression analysis to be among the most highly upregulated miRNAs...
April 8, 2017: Kidney International
https://www.readbyqxmd.com/read/28364323/circulating-and-renal-expression-of-hla-g-prevented-chronic-renal-allograft-dysfunction-in-japanese-recipients
#2
Yuki Okushi, Kazuaki Okino, Kiyotaka Mukai, Yuki Matsui, Norifumi Hayashi, Keiji Fujimoto, Hiroki Adachi, Hideki Yamaya, Hitoshi Yokoyama
BACKGROUND: Although the risk of acute rejection has been studied in renal transplanted patients, there is little data about the long-term renal survival effects of non-classical human leukocyte antigen class I (HLA-G) in Japanese patients. METHOD: We investigated the changes in the estimated glomerular filtration rate (eGFR) for Japanese, and factors affecting the eGFR in 141 adult Japanese subjects whose allografts had survived for at least 1 year. Clinical background data, gender, HLA matching status, the total ischemic time, ABO incompatibility, immunosuppressive therapy, and the serum soluble(s) HLA-G5 level were examined...
March 31, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28356665/renal-allograft-eosinophilia-an-unusual-presentation-of-sudden-graft-dysfunction
#3
A Yuvaraj, S Ghosh, G Abraham, P Koshy
We present a case of sudden allograft dysfunction 11 months after renal transplantation which presented as severe peripheral and allograft eosinophilia and was managed as a case of an acute cellular rejection with significant interstitial graft eosinophilic infiltration. Patient had partial response to antirejection therapy and eventually ended up in a chronic allograft dysfunction.
March 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28352021/prevalence-of-the-metabolic-syndrome-in-kidney-transplant-recipients-a-single-center-study
#4
Maryam Hami, M Ghorban Sabbagh, A Sefidgaran, M J Mojahedi
Metabolic syndrome (MS) is characterized by a combination of cardiovascular (CV) risk factors (hypertension, dyslipidemia, obesity, and alterations in glucose homeostasis). Insulin resistance is suggested to be the common pathogenic background. This syndrome is also a risk factor for diabetes and chronic kidney disease. In renal transplant recipients, MS has been shown to be an independent risk factor for chronic allograft dysfunction, graft failure, new-onset diabetes, and CV disease. We performed a cross-sectional study on 106 stable renal transplant recipients to detect MS between January 2013 and August 2013...
March 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28285802/long-term-prognosis-and-cost-effectiveness-of-left-ventricular-assist-device-as-bridge-to-transplantation-a-systematic-review
#5
Michael Seco, Dong Fang Zhao, Michael J Byrom, Michael K Wilson, Michael P Vallely, John F Fraser, Paul G Bannon
BACKGROUND: This systematic review aimed to evaluate the clinical outcomes and cost-effectiveness of left ventricular assist devices (LVADs) used as bridge to transplantation (BTT), compared to orthotopic heart transplantation (OHT) without a bridge. METHOD: Systematic searches were performed in electronic databases with available data extracted from text and digitized figures. Meta-analysis of short and long-term term post-transplantation outcomes was performed with summation of cost-effectiveness analyses...
May 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28262440/telomere-length-in-patients-with-pulmonary-fibrosis-associated-with-chronic-lung-allograft-dysfunction-and-post-lung-transplantation-survival
#6
Chad A Newton, Julia Kozlitina, Jefferson R Lines, Vaidehi Kaza, Fernando Torres, Christine Kim Garcia
BACKGROUND: Prior studies have shown that patients with pulmonary fibrosis with mutations in the telomerase genes have a high rate of certain complications after lung transplantation. However, few studies have investigated clinical outcomes based on leukocyte telomere length. METHODS: We conducted an observational cohort study of all patients with pulmonary fibrosis who underwent lung transplantation at a single center between January 1, 2007, and December 31, 2014...
February 4, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28260483/evaluation-of-indication-biopsies-%C3%A2-5-years-after-kidney-transplant-a-single-center-experience
#7
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/28219585/urinary-type-iii-procollagen-is-associated-with-chronic-allograft-dysfunction-and-predicts-graft-survival
#8
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/28214296/abnormally-high-and-heterogeneous-bone-matrix-mineralization-after-childhood-solid-organ-transplantation-a-complex-pathology-of-low-bone-turnover-and-local-defects-in-mineralization
#9
Nadja Fratzl-Zelman, Helena Valta, Renata C Pereira, Barbara M Misof, Paul Roschger, Hannu Jalanko, Kathrine Wesseling-Perry, Klaus Klaushofer, Outi Mäkitie
Chronic renal, liver and heart failure in children associates with multiple skeletal complications. Increased fracture incidence often persists after transplantation and could be related to alterations in bone material properties. In the present cohort study we evaluated bone mineralization density distribution (BMDD) by quantitative backscattered electron imaging (qBEI) in 23 pediatric solid organ allograft recipients with suspected osteoporosis. We measured BMDD in the entire cross-sectional area of transiliac bone biopsies obtained from kidney (n = 9), liver (n = 9) and heart (n = 5) transplant recipients (aged 7...
February 18, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28186707/mesenchymal-stromal-cell-therapy-for-chronic-lung-allograft-dysfunction-results-of-a-first-in-man-study
#10
Daniel C Chambers, Debra Enever, Sharon Lawrence, Marian J Sturm, Richard Herrmann, Stephanie Yerkovich, Michael Musk, Peter M A Hopkins
Chronic lung transplant rejection (termed chronic lung allograft dysfunction [CLAD]) is the main impediment to long-term survival after lung transplantation. Bone marrow-derived mesenchymal stromal cells (MSCs) represent an attractive cell therapy in inflammatory diseases, including organ rejection, given their relative immune privilege and immunosuppressive and tolerogenic properties. Preclinical studies in models of obliterative bronchiolitis and human trials in graft versus host disease and renal transplantation suggest potential efficacy in CLAD...
April 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28135784/morphologic-patterns-and-treatment-of-transplant-glomerulopathy-a-retrospective-analysis
#11
Rui Abreu, Fernanda Carvalho, Helena Viana, Isabel Mesquita, Marília Possante, Inês Aires, Fernando Caeiro, Cecília Silva, Patrícia Cotovio, Aníbal Ferreira, Francisco Remédio, Fernando Nolasco
Transplant glomerulopathy is mainly due to chronic antibody-mediated rejection and actually represents a major cause of long-term allograft failure. The lack of effective treatment remains a serious problem in transplantation. A retrospective and uni-center study was performed in 48 kidney allograft recipients with transplant glomerulopathy between January 2010 and December 2015. Median time for diagnosis was 7.1 (3.6-11.8) years post-transplant. Light microscopy showed severity of transplant glomerulopathy in the majority of patients (cg1=10...
April 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28100499/gremlin1-plays-a-key-role-in-kidney-development-and-renal-fibrosis
#12
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/28052095/metabolomic-profiling-in-individuals-with-a-failing-kidney-allograft
#13
Roberto Bassi, Monika A Niewczas, Luigi Biancone, Stefania Bussolino, Sai Merugumala, Sara Tezza, Francesca D'Addio, Moufida Ben Nasr, Alessandro Valderrama-Vasquez, Vera Usuelli, Valentina De Zan, Basset El Essawy, Massimo Venturini, Antonio Secchi, Francesco De Cobelli, Alexander Lin, Anil Chandraker, Paolo Fiorina
BACKGROUND: Alteration of certain metabolites may play a role in the pathophysiology of renal allograft disease. METHODS: To explore metabolomic abnormalities in individuals with a failing kidney allograft, we analyzed by liquid chromatography-mass spectrometry (LC-MS/MS; for ex vivo profiling of serum and urine) and two dimensional correlated spectroscopy (2D COSY; for in vivo study of the kidney graft) 40 subjects with varying degrees of chronic allograft dysfunction stratified by tertiles of glomerular filtration rate (GFR; T1, T2, T3)...
2017: PloS One
https://www.readbyqxmd.com/read/28039098/efficacy-and-tolerability-of-interferon-free-antiviral-therapy-in-kidney-transplant-recipients-with-chronic-hepatitis-c
#14
Inmaculada Fernández, Raquel Muñoz-Gómez, Juan M Pascasio, Carme Baliellas, Natalia Polanco, Nuria Esforzado, Ana Arias, Martín Prieto, Lluis Castells, Valentín Cuervas-Mons, Olga Hernández, Javier Crespo, José L Calleja, Xavier Forns, María-Carlota Londoño
BACKGROUND & AIMS: The development of direct-acting antiviral agents (DAAs) is a major step forward in the treatment of hepatitis C (HCV). The aims of the study were to evaluate the efficacy and tolerability of DAAs in kidney transplant (KT) recipients. METHODS: Hepa-C is a Spanish registry of patients treated with DAAs in which clinical, virological and analytical data were prospectively included. We report on the data from 103 KT recipients who received DAAs. RESULTS: The most commonly used DAAs combinations were sofosbuvir/ledipasvir (n=59, 57%) and sofosbuvir+daclatasvir (n=18, 17%)...
April 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/27994216/transforming-growth-factor-%C3%AE-1-induces-endothelial-to-mesenchymal-transition-via-akt-signaling-pathway-in-renal-transplant-recipients-with-chronic-allograft-dysfunction
#15
Zijie Wang, Zhijian Han, Jun Tao, Jun Wang, Xuzhong Liu, Wanli Zhou, Zhen Xu, Chunchun Zhao, Xiaobin Ju, Zengjun Wang, Ruoyun Tan, Min Gu
BACKGROUND Chronic allograft dysfunction (CAD) is the major cause of chronic loss of allograft in kidney transplant recipients. Kidney interstitial fibrosis is identified to be strongly associated with CAD in kidney transplantation. Recently, endothelial-to-mesenchymal transition (EndMT) has been identified as one of the potential mechanisms in kidney interstitial fibrosis. MATERIAL AND METHODS Kidney tissue samples from 25 renal transplant recipients (RTRs) with CAD and healthy volunteers were collected for HE (hematoxylin-eosin), Masson trichrome, and immunohistochemical staining, and indirect immunofluorescence double-staining assay...
December 20, 2016: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/27988211/graft-dysfunction-in-chronic-antibody-mediated-rejection-correlates-with-b-cell-dependent-indirect-antidonor-alloresponses-and-autocrine-regulation-of-interferon-%C3%AE-production-by-th1-cells
#16
Kin Yee Shiu, Laura McLaughlin, Irene Rebollo-Mesa, Jingyue Zhao, Hannah Burton, Harriet Douthwaite, Hannah Wilkinson, Vikki Semik, Philippa C Dodd, Paul Brookes, Robert I Lechler, Maria P Hernandez-Fuentes, Claudia Kemper, Anthony Dorling
Chronic antibody-mediated rejection, a common cause of renal transplant failure, has a variable clinical phenotype. Understanding why some with chronic antibody-mediated rejection progress slowly may help develop more effective therapies. B lymphocytes act as antigen-presenting cells for in vitro indirect antidonor interferon-γ production in chronic antibody-mediated rejection, but many patients retain the ability to regulate these responses. Here we test whether particular patterns of T and B cell antidonor response associate with the variability of graft dysfunction in chronic antibody-mediated rejection...
February 2017: Kidney International
https://www.readbyqxmd.com/read/27848058/current-pathological-perspectives-on-chronic-rejection-in-renal-allografts
#17
REVIEW
Shigeo Hara
Chronic rejection in renal transplantation clinically manifests as slow deterioration in allograft function and is a major contributor of late renal graft loss. Most cases of chronic rejection involve chronic antibody-mediated rejection (ABMR) triggered by the interaction of donor-specific alloantibodies with endothelial cells of the microcirculation. The evolution of the Banff classification involved a major revision of the ABMR criteria during the 2000s and led to the inclusion of detailed pathological characteristics of chronic ABMR in the 2013 Banff scheme, including microcirculation damage observed as newly formed basement membranes and arterial fibrous intimal proliferation...
November 16, 2016: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/27833442/stat4-gene-polymorphism-in-patients-after-renal-allograft-transplantation
#18
Ewa Dąbrowska-Żamojcin, Violetta Dziedziejko, Krzysztof Safranow, Leszek Domański, Sylwia Słuczanowska-Głabowska, Andrzej Pawlik
INTRODUCTION: STAT4 (signal transducer and activator of transcription 4) is involved in the regulation of innate and adaptive immune responses. Some studies have suggested that STAT4 may be involved in the immune response after graft transplantation. Several polymorphisms in the STAT4 gene have been identified. The most commonly studied polymorphism in the STAT4 gene is rs7574865. In our study, we examined whether this polymorphism is associated with the early and late functions of renal allografts...
2016: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/27798244/the-emerging-importance-of-non-hla-autoantibodies-in-kidney-transplant-complications
#19
Héloise Cardinal, Mélanie Dieudé, Marie-Josée Hébert
Antibodies that are specific to organ donor HLA have been involved in the majority of cases of antibody-mediated rejection in solid organ transplant recipients. However, recent data show that production of non-HLA autoantibodies can occur before transplant in the form of natural autoantibodies. In contrast to HLAs, which are constitutively expressed on the cell surface of the allograft endothelium, autoantigens are usually cryptic. Tissue damage associated with ischemia-reperfusion, vascular injury, and/or rejection creates permissive conditions for the expression of cryptic autoantigens, allowing these autoantibodies to bind antigenic targets and further enhance vascular inflammation and renal dysfunction...
February 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27751999/chronic-renal-allograft-dysfunction-in-egyptian-population-histopathological-and-immunohistochemical-study
#20
Wael M Hamza, Hanan H Ali, Samia M Gabal, Sawsan A Fadda
The chronic dysfunction stands as the most common cause of renal allograft loss. During the nineties of the past century, this condition was referred to as chronic allograft nephropathy (CAN). Since 2005, CAN has been assigned by the eighth Banff schema to four main categories via histopathological and immunohistochemical findings including chronic antibodymediated rejection (CAMR), chronic T-cell-mediated rejection (CTMR), chronic cyclosporine toxicity (CNITOX), and "interstitial fibrosis (IF)/tubular atrophy; not otherwise specified (NOS)" to eliminate the term CAN...
September 2016: Saudi Journal of Kidney Diseases and Transplantation
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