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Kidney International

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https://www.readbyqxmd.com/read/28320531/global-trends-and-challenges-in-deceased-donor-kidney-allocation
#1
REVIEW
Diana A Wu, Christopher J Watson, J Andrew Bradley, Rachel J Johnson, John L Forsythe, Gabriel C Oniscu
Worldwide, the number of patients able to benefit from kidney transplantation is greatly restricted by the severe shortage of deceased donor organs. Allocation of this scarce resource is increasingly challenging and complex. Striking an acceptable balance between efficient use of (utility) and fair access to (equity) the limited supply of donated kidneys raises controversial but important debates at ethical, medical, and social levels. There is no international consensus on the recipient and donor factors that should be considered in the kidney allocation process...
March 17, 2017: Kidney International
https://www.readbyqxmd.com/read/28320530/single-cell-rna-sequence-analysis-of-mouse-glomerular-mesangial-cells-uncovers-mesangial-cell-essential-genes
#2
Yuqiu Lu, Yuting Ye, Qianqian Yang, Shaolin Shi
Mesangial cells are essential for the structure and function of glomeruli, but the mechanisms underlying these roles are not well understood. Here, we performed a single-cell RNA-sequence (RNA-seq) analysis of mouse mesangial cells using the Fluidigm C1 platform. We found that gene expression in individual mesangial cells was tremendously heterogeneous, with mean correlation coefficients of 0.20, and most mesangial genes were actually expressed in only a portion of mesangial cells and are therefore presumably dispensable...
March 17, 2017: Kidney International
https://www.readbyqxmd.com/read/28318633/capillary-leak-syndrome-etiologies-pathophysiology-and-management
#3
REVIEW
Eric Siddall, Minesh Khatri, Jai Radhakrishnan
In various human diseases, an increase in capillary permeability to proteins leads to the loss of protein-rich fluid from the intravascular to the interstitial space. Although sepsis is the disease most commonly associated with this phenomenon, many other diseases can lead to a "sepsis-like" syndrome with manifestations of diffuse pitting edema, exudative serous cavity effusions, noncardiogenic pulmonary edema, hypotension, and, in some cases, hypovolemic shock with multiple-organ failure. The term capillary leak syndrome has been used to describe this constellation of disease manifestations associated with an increased capillary permeability to proteins...
March 16, 2017: Kidney International
https://www.readbyqxmd.com/read/28318632/endovascular-aneurysm-repair-evar-and-transcatheter-aortic-valve-replacement-tavr-associated-acute-kidney-injury
#4
REVIEW
Kenar D Jhaveri, Athanasios N Saratzis, Rimda J Wanchoo, Pantelis A Sarafidis
Acute kidney injury (AKI) after surgery or intervention is an important complication that may impact mortality, morbidity, and health care costs. Endovascular procedures are now performed routinely for a variety of pathologies that were traditionally treated with open surgery because randomized trials comparing endovascular and open surgery have shown at least equally good results and reduced complication and hospitalization rates with endovascular techniques. However, endovascular procedures have been associated with an increased risk for postoperative AKI, predominantly owing to contrast nephrotoxicity...
March 16, 2017: Kidney International
https://www.readbyqxmd.com/read/28318631/the-antihelmenthic-phosphate-niclosamide-impedes-renal-fibrosis-by-inhibiting-homeodomain-interacting-protein-kinase-2-expression
#5
Xiaoyan Chang, Xin Zhen, Jixing Liu, Xiaomei Ren, Zheng Hu, Zhanmei Zhou, Fengxin Zhu, Ke Ding, Jing Nie
Renal fibrosis is the final common pathway of all varieties of progressive chronic kidney disease. However, there are no effective therapies to prevent or slow the progression of renal fibrosis. Niclosamide is a US Food and Drug Administration-approved oral antihelminthic drug used for treating most tapeworm infections. Here, we demonstrated that phosphate niclosamide, the water-soluble form of niclosamide, significantly reduced proteinuria, glomerulosclrotic lesions, and interstitial fibrosis in a murine model of adriamycin nephropathy...
March 16, 2017: Kidney International
https://www.readbyqxmd.com/read/28318630/sarcopenia-and-its-individual-criteria-are-associated-in-part-with-mortality-among-patients%C3%A2-on-hemodialysis
#6
Piyawan Kittiskulnam, Glenn M Chertow, Juan J Carrero, Cynthia Delgado, George A Kaysen, Kirsten L Johansen
The relative importance of sarcopenia and its individual components as independent predictors of mortality in the dialysis population has not been determined. We estimated whole-body muscle mass using pre-dialysis bioimpedance spectroscopy measurements in 645 ACTIVE/ADIPOSE-enrolled prevalent hemodialysis patients from San Francisco and Atlanta. Low muscle mass was defined as two standard deviations below sex-specific means for young adults from NHANES and indexed to height(2), body weight, body surface area, or body mass index...
March 16, 2017: Kidney International
https://www.readbyqxmd.com/read/28318629/machine-learning-algorithms-define-pathogen-specific-local-immune-fingerprints-in-peritoneal-dialysis-patients-with-bacterial-infections
#7
Jingjing Zhang, Ida M Friberg, Ann Kift-Morgan, Gita Parekh, Matt P Morgan, Anna Rita Liuzzi, Chan-Yu Lin, Kieron L Donovan, Chantal S Colmont, Peter H Morgan, Paul Davis, Ian Weeks, Donald J Fraser, Nicholas Topley, Matthias Eberl
The immune system has evolved to sense invading pathogens, control infection, and restore tissue integrity. Despite symptomatic variability in patients, unequivocal evidence that an individual's immune system distinguishes between different organisms and mounts an appropriate response is lacking. We here used a systematic approach to characterize responses to microbiologically well-defined infection in a total of 83 peritoneal dialysis patients on the day of presentation with acute peritonitis. A broad range of cellular and soluble parameters was determined in peritoneal effluents, covering the majority of local immune cells, inflammatory and regulatory cytokines and chemokines as well as tissue damage-related factors...
March 16, 2017: Kidney International
https://www.readbyqxmd.com/read/28318627/vascular-adhesion-protein-1-enhances-neutrophil-infiltration-by-generation-of-hydrogen-peroxide-in-renal-ischemia-reperfusion-injury
#8
Shinji Tanaka, Tetsuhiro Tanaka, Takahisa Kawakami, Hideki Takano, Mai Sugahara, Hisako Saito, Yoshiki Higashijima, Junna Yamaguchi, Reiko Inagi, Masaomi Nangaku
Vascular adhesion protein-1 (VAP-1) is a unique molecule since it acts as an adhesion molecule as well as an ectoenzyme catalyzing oxidative deamination of primary amines and generates hydrogen peroxide in the extracellular space. While VAP-1 is implicated in various inflammatory diseases, its role in acute kidney injury is less characterized. Here we studied VAP-1 expression in the kidney and the effect of its inhibition in a rat model of renal ischemia/reperfusion injury. VAP-1 was predominantly expressed in pericytes, which released enzymatically active enzyme...
March 16, 2017: Kidney International
https://www.readbyqxmd.com/read/28318621/early-peritoneal-dialysis-reduces-lung-inflammation-in-mice-with-ischemic-acute-kidney-injury
#9
Chris Altmann, Nilesh Ahuja, Carol M Kiekhaefer, Ana Andres Hernando, Kayo Okamura, Rhea Bhargava, Jane Duplantis, Lara A Kirkbride-Romeo, Jill Huckles, Benjamin M Fox, Kashfi Kahn, Danielle Soranno, Hyo-Wook Gil, Isaac Teitelbaum, Sarah Faubel
Although dialysis has been used in the care of patients with acute kidney injury (AKI) for over 50 years, very little is known about the potential benefits of uremic control on systemic complications of AKI. Since the mortality of AKI requiring renal replacement therapy (RRT) is greater than half in the intensive care unit, a better understanding of the potential of RRT to improve outcomes is urgently needed. Therefore, we sought to develop a technically feasible and reproducible model of RRT in a mouse model of AKI...
March 16, 2017: Kidney International
https://www.readbyqxmd.com/read/28318634/dna-methyltransferase-1-may-be-a-therapy-target-for-attenuating-diabetic-nephropathy-and-podocyte-injury
#10
Li Zhang, Qianmei Zhang, Shuangxin Liu, Yuanhan Chen, Ruizhao Li, Ting Lin, Chunping Yu, Hong Zhang, Zhongshun Huang, Xinchen Zhao, Xiaofan Tan, Zhuo Li, Zhiming Ye, Jianchao Ma, Bin Zhang, Wenjian Wang, Wei Shi, Xinling Liang
The contribution of DNA methylation to diabetic nephropathy, especially the effect on podocyte integrity, is not clarified. Here we found that albuminuria in a db/db mouse model was markedly attenuated after treatment with a DNA methylation inhibitor. This was accompanied by alleviation of glomerular hypertrophy, mesangial matrix expansion, and podocyte injury. The expression of DNA methyltransferase 1 (Dnmt1), nuclear factor Sp1, and nuclear factor kappa B (NFκB)-p65 markedly increased in podocytes in vivo and in vitro under the diabetic state...
March 15, 2017: Kidney International
https://www.readbyqxmd.com/read/28318628/b-and-t-cell-subpopulations-in-patients-with-severe-idiopathic-membranous-nephropathy-may-predict-an-early-response-to-rituximab
#11
Michelle Rosenzwajg, Eva Languille, Hanna Debiec, Joana Hygino, Karine Dahan, Tabassome Simon, David Klatzmann, Pierre Ronco
Primary membranous nephropathy (PMN) is characterized by antibodies to the podocyte, but little is known about B- and T-cell populations and their response to rituximab is controversial. To help resolve this we compared 33 lymphocyte subpopulations and 27 cytokines/chemokines in 25 patients with severe PMN and 27 age-matched healthy individuals. At baseline, patients had a significantly increased percentage of naive B-cells with significantly decreased switched and non-switched memory B-cells. There was a significantly decreased percentage of natural killer (NK) cells with an increase in the CD56(bright)CD16(-/lo) NK subset...
March 15, 2017: Kidney International
https://www.readbyqxmd.com/read/28318626/the-leukotriene-b4-leukotriene-b4-receptor-axis-promotes-cisplatin-induced-acute-kidney-injury-by%C3%A2-modulating-neutrophil-recruitment
#12
Bo Deng, Yuli Lin, Shuai Ma, Yin Zheng, Xuguang Yang, Bingji Li, Wenyan Yu, Qingqing Xu, Tingyan Liu, Chuanming Hao, Rui He, Feng Ding
Cisplatin is an effective chemotherapeutic agent and widely used in treatment of various solid organ malignancies, including head and neck, ovarian, and testicular cancers. However, the induction of acute kidney injury (AKI) is one of its main side effects. Leukotriene B4 receptor 1 (BLT1) mediates the majority of physiological effects of leukotriene B4 (LTB4), a potent lipid chemoattractant generated at inflammation sites, but the role of the LTB4-BLT1 axis in cisplatin-induced AKI remains unknown. Here we found upregulated LTB4 synthesis and BLT1 expression in the kidney after cisplatin administration...
March 15, 2017: Kidney International
https://www.readbyqxmd.com/read/28318625/mycophenolate-mofetil-is-inferior-to-tacrolimus-in-sustaining-remission-in-children-with-idiopathic-steroid-resistant-nephrotic-syndrome
#13
Aditi Sinha, Aarti Gupta, Mani Kalaivani, Pankaj Hari, Amit K Dinda, Arvind Bagga
Studies of nephrotic syndrome show that substitution of calcineurin inhibitors by mycophenolate mofetil (MMF) enables sustained remission and corticosteroid sparing and avoids therapy associated adverse effects. However, controlled studies in patients with steroid resistance are lacking. Here we examined the effect of switching from therapy with tacrolimus to MMF on disease course in an open-label, one-to-one randomized, controlled trial on children (one to 18 years old), recently diagnosed with steroid-resistant nephrotic syndrome, at a referral center in India...
March 15, 2017: Kidney International
https://www.readbyqxmd.com/read/28318624/treatment-tolerance-and-patient-reported-outcomes-favor-online-hemodiafiltration-compared-to-high-flux-hemodialysis-in-the-elderly
#14
Marion Morena, Audrey Jaussent, Lotfi Chalabi, Hélène Leray-Moragues, Leila Chenine, Alain Debure, Damien Thibaudin, Lynda Azzouz, Laure Patrier, Francois Maurice, Philippe Nicoud, Claude Durand, Bruno Seigneuric, Anne-Marie Dupuy, Marie-Christine Picot, Jean-Paul Cristol, Bernard Canaud
Large cohort studies suggest that high convective volumes associated with online hemodiafiltration may reduce the risk of mortality/morbidity compared to optimal high-flux hemodialysis. By contrast, intradialytic tolerance is not well studied. The aim of the FRENCHIE (French Convective versus Hemodialysis in Elderly) study was to compare high-flux hemodialysis and online hemodiafiltration in terms of intradialytic tolerance. In this prospective, open-label randomized controlled trial, 381 elderly chronic hemodialysis patients (over age 65) were randomly assigned in a one-to-one ratio to either high-flux hemodialysis or online hemodiafiltration...
March 15, 2017: Kidney International
https://www.readbyqxmd.com/read/28318623/the-complexity-of-chronic-kidney-disease-mineral-and-bone-disorder-across-stages-of-chronic-kidney%C3%A2-disease
#15
Fabiana G Graciolli, Katia R Neves, Fellype Barreto, Daniela V Barreto, Luciene M Dos Reis, Maria E Canziani, Yves Sabbagh, Aluizio B Carvalho, Vanda Jorgetti, Rosilene M Elias, Susan Schiavi, Rosa M A Moysés
Chronic Kidney Disease (CKD)-Mineral and Bone Disorder (CKD-MBD) is a complex disease that is not completely understood. However, some factors secreted by the osteocytes might play an important role in its pathophysiology. Therefore, we evaluated the bone expression of proteins in a group of patients with CKD 2-3, CKD 4, and CKD 5 on dialysis and healthy individuals. We also tested several bone remodeling markers, and correlated these levels with bone biopsy findings. As expected, as serum calcium decreased, serum phosphate, alkaline phosphatase, fibroblast growth factor-23 (FGF-23), parathyroid hormone, and osteoprotegerin increased, as CKD progressed...
March 15, 2017: Kidney International
https://www.readbyqxmd.com/read/28318622/computer-assisted-topological-analysis-of-renal-allograft-inflammation-adds-to-risk-evaluation-at-diagnosis-of-humoral-rejection
#16
Antoine Sicard, Vannary Meas-Yedid, Maud Rabeyrin, Alice Koenig, Stephanie Ducreux, Frederique Dijoud, Valerie Hervieu, Lionel Badet, Emmanuel Morelon, Jean Christophe Olivo-Marin, Valerie Dubois, Olivier Thaunat
Antibody-mediated rejection is associated with heterogeneous kidney allograft outcomes. Accurate evaluation of risk for graft loss at time of diagnosis is necessary to offer personalized treatment. In contrast with serological and molecular assessment, morpho-histological evaluation of antibody-mediated rejection lesions has not significantly evolved. This relies on Banff classifications designed to be of diagnostic discriminatory power rather than prognostic and face quantitative and qualitative limitations...
March 15, 2017: Kidney International
https://www.readbyqxmd.com/read/28302371/urinary-metabolites-along-with-common-and-rare-genetic-variations-are-associated-with-incident-chronic-kidney-disease
#17
Gearoid M McMahon, Shih-Jen Hwang, Clary B Clish, Adrienne Tin, Qiong Yang, Martin G Larson, Eugene P Rhee, Man Li, Daniel Levy, Christopher J O'Donnell, Josef Coresh, J Hunter Young, Robert E Gerszten, Caroline S Fox
We assessed the association between urinary metabolites, genetic variants, and incident chronic kidney disease (CKD) in the Framingham Offspring cohort. Among the participants, 193 individuals developed CKD (estimated glomerular filtration rate under 60 ml/min/1.73m(2)) between cohort examinations 6 (1995-1998) and 8 (2005-2008, mean follow-up 9.7 years). They were age- and sex-matched to 193 control individuals free of CKD. A total of 154 urinary metabolites were measured using mass spectrometry, and the association between metabolites and CKD was examined using logistic regression...
March 14, 2017: Kidney International
https://www.readbyqxmd.com/read/28302370/the-lipid-5-phoshatase-ship2-controls-renal-brush-border-ultrastructure-and-function-by-regulating-the-activation-of-erm-proteins
#18
Sufyan G Sayyed, François Jouret, Marjorie Vermeersch, David Pérez-Morga, Stéphane Schurmans
The microvillus brush border on the renal proximal tubule epithelium allows the controlled reabsorption of solutes that are filtered through the glomerulus and thus participates in general body homeostasis. Here, using the lipid 5-phosphatase Ship2 global knockout mice, proximal tubule-specific Ship2 knockout mice, and a proximal tubule cell model in which SHIP2 is inactivated, we show that SHIP2 is a negative regulator of microvilli formation, thereby controlling solute reabsorption by the proximal tubule...
March 13, 2017: Kidney International
https://www.readbyqxmd.com/read/28274484/posttransplant-peripheral-blood-donor-specific-interferon-%C3%AE-enzyme-linked-immune-spot-assay-differentiates-risk-of-subclinical-rejection-and-de-novo-donor-specific-alloantibodies-in-kidney-transplant-recipients
#19
Elena Crespo, Paolo Cravedi, Jaume Martorell, Sergi Luque, Edoardo Melilli, Josep M Cruzado, Marta Jarque, Maria Meneghini, Anna Manonelles, Chiara Donadei, Núria Lloberas, Montse Gomà, Josep M Grinyó, Peter Heeger, Oriol Bestard
Noninvasive diagnosis of kidney allograft inflammation in transplant recipients with stable graft function (subclinical rejection) could permit more effective therapy and prevent later development of de novo anti-donor HLA antibodies and/or graft dysfunction. Here we tested whether quantifying posttransplant donor-specific alloreactive T-cells by IFN-γ ELISPOT assay noninvasively detects subclinical T-cell mediated rejection and/or predicts development of anti-donor HLA antibodies. Using an initial cross-sectional cohort of 60 kidney transplant patients with six-month surveillance biopsies, we found that negative donor-specific IFN-γ ELISPOT assays accurately ruled out the presence of subclinical T-cell mediated rejection...
March 5, 2017: Kidney International
https://www.readbyqxmd.com/read/28249676/murine-recombinant-angiotensin-converting-enzyme-2-attenuates-kidney-injury-in-experimental-alport-syndrome
#20
Eun Hui Bae, Fei Fang, Vanessa R Williams, Ana Konvalinka, Xiaohua Zhou, Vaibhav B Patel, Xuewen Song, Rohan John, Gavin Y Oudit, York Pei, James W Scholey
Angiotensin-converting enzyme 2 (ACE2) is a monocarboxypeptidase in the renin-angiotensin system that catalyzes the breakdown of angiotensin II to angiotensin 1-7. We have reported that ACE2 expression in the kidney is reduced in experimental Alport syndrome but the impact of this finding on disease progression has not been studied. Accordingly, we evaluated effects of murine recombinant ACE2 treatment in Col4a3 knockout mice, a model of Alport syndrome characterized by proteinuria and progressive renal injury...
February 26, 2017: Kidney International
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