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Kidney International

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https://www.readbyqxmd.com/read/28927645/angiotensin-ii-type-1-receptor-antibodies-are-associated%C3%A2-with-inflammatory-cytokines-and-poor-clinical-outcomes-in-pediatric-kidney-transplantation
#1
Meghan H Pearl, Qiuheng Zhang, Miguel Fernando Palma Diaz, Jonathan Grotts, Maura Rossetti, David Elashoff, David W Gjertson, Patricia Weng, Elaine F Reed, Eileen Tsai Chambers
Angiotensin II type 1 receptor (AT1R) antibody has been linked to poor allograft outcomes in adult kidney transplantation. However, its clinical consequences in children are unknown. To study this, we examined the relationship of AT1R antibody with clinical outcomes, biopsy findings, inflammatory cytokines, and HLA donor-specific antibodies (DSA) in a cohort of pediatric renal transplant recipients. Sixty-five patients were longitudinally monitored for AT1R antibody, HLA DSA, IL-8, TNF-α, IL-1β, IFN-γ, IL-17, and IL-6, renal dysfunction, hypertension, rejection, and allograft loss during the first two years post transplantation...
September 16, 2017: Kidney International
https://www.readbyqxmd.com/read/28927644/acute-kidney-injury-is-a-risk-factor-for-subsequent-proteinuria
#2
Sharidan K Parr, Michael E Matheny, Khaled Abdel-Kader, Robert A Greevy, Aihua Bian, James Fly, Guanhua Chen, Theodore Speroff, Adriana M Hung, T Alp Ikizler, Edward D Siew
Acute kidney injury (AKI) is associated with subsequent chronic kidney disease (CKD), but the mechanism is unclear. To clarify this, we examined the association of AKI and new-onset or worsening proteinuria during the 12 months following hospitalization in a national retrospective cohort of United States Veterans hospitalized between 2004-2012. Patients with and without AKI were matched using baseline demographics, comorbidities, proteinuria, estimated glomerular filtration rate, blood pressure, angiotensin-converting enzyme inhibitor or angiotensin II receptor blocker (ACEI/ARB) use, and inpatient exposures linked to AKI...
September 16, 2017: Kidney International
https://www.readbyqxmd.com/read/28911789/a-retrospective-study-of-pregnancy-associated-atypical-hemolytic-uremic-syndrome
#3
Ana Huerta, Emilia Arjona, Jose Portoles, Paula Lopez-Sanchez, Cristina Rabasco, Mario Espinosa, Teresa Cavero, Miquel Blasco, Mercedes Cao, Joaquin Manrique, Virginia Cabello-Chavez, Marta Suñer, Manuel Heras, Xavier Fulladosa, Lara Belmar, Amparo Sempere, Carmen Peralta, Lorena Castillo, Alvaro Arnau, Manuel Praga, Santiago Rodriguez de Cordoba
Pregnancy-associated atypical hemolytic uremic syndrome (aHUS) refers to the thrombotic microangiopathy resulting from uncontrolled complement activation during pregnancy or the postpartum period. Pregnancy-associated aHUS is a devastating disease for which there is a limited clinical understanding and treatment experience. Here we report a retrospective study to analyze the clinical and prognostic data of 22 cases of pregnancy-associated aHUS from the Spanish aHUS Registry under different treatments. Sixteen patients presented during the first pregnancy and as many as nine patients required hemodialysis at diagnosis...
September 11, 2017: Kidney International
https://www.readbyqxmd.com/read/28893421/whole-exome-sequencing-frequently-detects-a-monogenic-cause-in-early-onset-nephrolithiasis-and%C3%A2-nephrocalcinosis
#4
Ankana Daga, Amar J Majmundar, Daniela A Braun, Heon Yung Gee, Jennifer A Lawson, Shirlee Shril, Tilman Jobst-Schwan, Asaf Vivante, David Schapiro, Weizhen Tan, Jillian K Warejko, Eugen Widmeier, Caleb P Nelson, Hanan M Fathy, Zoran Gucev, Neveen A Soliman, Seema Hashmi, Jan Halbritter, Margarita Halty, Jameela A Kari, Sherif El-Desoky, Michael A Ferguson, Michael J G Somers, Avram Z Traum, Deborah R Stein, Ghaleb H Daouk, Nancy M Rodig, Avi Katz, Christian Hanna, Andrew L Schwaderer, John A Sayer, Ari J Wassner, Shrikant Mane, Richard P Lifton, Danko Milosevic, Velibor Tasic, Michelle A Baum, Friedhelm Hildebrandt
The incidence of nephrolithiasis continues to rise. Previously, we showed that a monogenic cause could be detected in 11.4% of individuals with adult-onset nephrolithiasis or nephrocalcinosis and in 16.7-20.8% of individuals with onset before 18 years of age, using gene panel sequencing of 30 genes known to cause nephrolithiasis/nephrocalcinosis. To overcome the limitations of panel sequencing, we utilized whole exome sequencing in 51 families, who presented before age 25 years with at least one renal stone or with a renal ultrasound finding of nephrocalcinosis to identify the underlying molecular genetic cause of disease...
September 8, 2017: Kidney International
https://www.readbyqxmd.com/read/28893420/the-hallmarks-of-mitochondrial-dysfunction-in-chronic-kidney-disease
#5
Daniel L Galvan, Nathanael H Green, Farhad R Danesh
Recent advances have led to a greater appreciation of how mitochondrial dysfunction contributes to diverse acute and chronic pathologies. Indeed, mitochondria have received increasing attention as a therapeutic target in a variety of diseases because they serve as key regulatory hubs uniquely situated at crossroads between multiple cellular processes. This review provides an overview of the role of mitochondrial dysfunction in chronic kidney disease, with special emphasis on its role in the development of diabetic nephropathy...
September 8, 2017: Kidney International
https://www.readbyqxmd.com/read/28893419/telenephrology-current-perspectives-and-future%C3%A2-directions
#6
Rajeev Rohatgi, Michael J Ross, Sandawana W Majoni
There is increasing interest in telemedicine among physicians and patients; however, the evidence regarding the quality of care delivered by telemedicine, and telenephrology in particular, compared with in-person care is limited. In this review, different electronic modalities used to deliver nephrology care are reviewed and critiqued, with a focused analysis from the Australian and United States perspectives. Both countries are geographically expansive with significant rural populations where access to nephrology care is limited...
September 8, 2017: Kidney International
https://www.readbyqxmd.com/read/28893418/the-promise-of-single-cell-rna-sequencing-for-kidney-disease-investigation
#7
Haojia Wu, Benjamin D Humphreys
Recent techniques for single-cell RNA sequencing (scRNA-seq) at high throughput are leading to profound new discoveries in biology. The ability to generate vast amounts of transcriptomic data at cellular resolution represents a transformative advance, allowing the identification of novel cell types, states, and dynamics. In this review, we summarize the development of scRNA-seq methodologies and highlight their advantages and drawbacks. We discuss available software tools for analyzing scRNA-Seq data and summarize current computational challenges...
September 8, 2017: Kidney International
https://www.readbyqxmd.com/read/28890327/induction-of-interdigitating-cell-processes-in-podocyte-culture
#8
Eishin Yaoita, Yutaka Yoshida, Masaaki Nameta, Hiroki Takimoto, Hidehiko Fujinaka
Highly organized cell processes characterize glomerular podocytes in vivo. However, podocytes in culture have a simple morphology lacking cell processes, especially upon reaching confluence. Here, we aimed to establish culture conditions under which cultured podocytes extend cell processes at confluence. Among various culture conditions that could possibly cause phenotypic changes in podocytes, we examined the effects of heparin, all-trans retinoic acid, fetal bovine serum, and extracellular matrices on the morphology of podocytes in rat primary culture...
September 7, 2017: Kidney International
https://www.readbyqxmd.com/read/28890326/taurolidine-based-catheter-lock-regimen-significantly-reduces-overall-costs-infection-and-dysfunction-rates-of-tunneled-hemodialysis-catheters
#9
Wolfgang Winnicki, Harald Herkner, Matthias Lorenz, Ammon Handisurya, Željko Kikić, Bernhard Bielesz, Benjamin Schairer, Thomas Reiter, Farsad Eskandary, Gere Sunder-Plassmann, Guerkan Sengoelge
Catheter-related infections and dysfunction are the main catheter complications causing morbidity and mortality in hemodialysis patients. However, there are no consistent data for the choice of catheter lock solutions for tunneled hemodialysis lines. In this prospective, multicenter, randomized, controlled trial, two lock regimens using three commercial catheter lock solutions were compared in 106 hemodialysis patients with a newly inserted tunneled central catheter. In the taurolidine group, TauroLock™-Hep500 was used twice per week and TauroLock™-U25,000 once a week...
September 7, 2017: Kidney International
https://www.readbyqxmd.com/read/28890325/aki-on-ckd-heightened-injury-suppressed-repair-and-the-underlying-mechanisms
#10
REVIEW
Liyu He, Qingqing Wei, Jing Liu, Mixuan Yi, Yu Liu, Hong Liu, Lin Sun, Youming Peng, Fuyou Liu, Manjeri A Venkatachalam, Zheng Dong
Acute kidney injury (AKI) and chronic kidney disease (CKD) are interconnected. Although AKI-to-CKD transition has been intensively studied, the information of AKI on CKD is very limited. Nonetheless, AKI, when occurring in patients with CKD, is known to be more severe and difficult to recover. CKD is associated with significant changes in cell signaling in kidney tissues, including the activation of transforming growth factor-β, p53, hypoxia-inducible factor, and major developmental pathways. At the cellular level, CKD is characterized by mitochondrial dysfunction, oxidative stress, and aberrant autophagy...
September 7, 2017: Kidney International
https://www.readbyqxmd.com/read/28888328/a-population-based-approach-to-assess-the-heritability-and-distribution-of-renal-handling-of-electrolytes
#11
Flore Moulin, Belen Ponte, Menno Pruijm, Daniel Ackermann, Yassine Bouatou, Idris Guessous, Georg Ehret, Olivier Bonny, Antoinette Pechère-Bertschi, Jan A Staessen, Fred Paccaud, Pierre-Yves Martin, Michel Burnier, Bruno Vogt, Olivier Devuyst, Murielle Bochud
The handling of electrolytes by the kidney is essential for homeostasis. However, the heritability of these processes, the first step in gene discovery, is poorly known. To help clarify this, we estimated the heritability of serum concentration, urinary excretion, renal clearance, and fractional excretion of sodium, potassium, magnesium, calcium, phosphate, and chloride in a population-based study. Nuclear families were randomly selected from the general population in Lausanne, Geneva, and Bern, Switzerland, and urine collected over 24-hour periods...
September 6, 2017: Kidney International
https://www.readbyqxmd.com/read/28865675/plasma-galectin-3-levels-are-associated-with-the-risk-of-incident-chronic-kidney-disease
#12
Casey M Rebholz, Elizabeth Selvin, Menglu Liang, Christie M Ballantyne, Ron C Hoogeveen, David Aguilar, John W McEvoy, Morgan E Grams, Josef Coresh
Galectin-3 has been proposed as a novel biomarker of heart failure and cardiac fibrosis, and may also be associated with fibrosis of other organs such as the kidney. To determine this, we prospectively analyzed data from 9,148 Atherosclerosis Risk in Communities (ARIC) Study participants with measured plasma galectin-3 levels (baseline, visit 4, 1996-98) and without prevalent chronic kidney disease (CKD) or heart failure. We identified 1,983 incident CKD cases through December 31, 2013 over a median follow-up of 16 years...
August 30, 2017: Kidney International
https://www.readbyqxmd.com/read/28863945/the-renal-artery-is-involved-in-chinese-takayasu-s-arteritis-patients
#13
Zhe Chen, Jing Li, Yunjiao Yang, Hongchao Li, Jiuliang Zhao, Fei Sun, Mengtao Li, Xinping Tian, Xiaofeng Zeng
Takayasu's arteritis is a rare systemic vasculitis mainly affecting the aorta and its major branches. Previous studies have suggested that almost half of the Asian Takayasu's patients have renal artery involvement. However, due to the rarity of the disease, little is known about renal artery involvement in Chinese Takayasu's arteritis patients. Here, we retrospectively reviewed and analyzed 411 patients diagnosed with Takayasu's arteritis in our center to explore the clinical features of renal artery involvement in this group of patients...
August 30, 2017: Kidney International
https://www.readbyqxmd.com/read/28860019/pooled-analysis-of-phase-iii-trials-indicate-contrasting-influences-of-renal-function-on-blood%C3%A2-pressure-body-weight-and-hba1c-reductions-with-empagliflozin
#14
David Z I Cherney, Mark E Cooper, Ilkka Tikkanen, Egon Pfarr, Odd Erik Johansen, Hans J Woerle, Uli C Broedl, Søren S Lund
Sodium glucose cotransporter 2 (SGLT2) inhibitors reduce HbA1c, blood pressure, and weight in patients with type 2 diabetes. To investigate the effect of renal function on reductions in these parameters with the SGLT2 inhibitor empagliflozin, we assessed subgroups by baseline estimated glomerular filtration rate (eGFR; Modification of Diet in Renal Disease) in pooled data from five 24-week trials of 2286 patients with type 2 diabetes randomized to empagliflozin or placebo. Reductions in HbA1c with empagliflozin versus placebo significantly diminished with decreasing baseline eGFR...
August 28, 2017: Kidney International
https://www.readbyqxmd.com/read/28847650/hypoxia-inducible-factor-prolyl-4-hydroxylation-in-foxd1-lineage-cells-is-essential-for-normal-kidney-development
#15
Hanako Kobayashi, Jiao Liu, Andres A Urrutia, Mikhail Burmakin, Ken Ishii, Malini Rajan, Olena Davidoff, Zubaida Saifudeen, Volker H Haase
Hypoxia in the embryo is a frequent cause of intra-uterine growth retardation, low birth weight, and multiple organ defects. In the kidney, this can lead to low nephron endowment, predisposing to chronic kidney disease and arterial hypertension. A key component in cellular adaptation to hypoxia is the hypoxia-inducible factor pathway, which is regulated by prolyl-4-hydroxylase domain (PHD) dioxygenases PHD1, PHD2, and PHD3. In the adult kidney, PHD oxygen sensors are differentially expressed in a cell type-dependent manner and control the production of erythropoietin in interstitial cells...
August 26, 2017: Kidney International
https://www.readbyqxmd.com/read/28844317/short-daily-nocturnal-and-conventional-home-hemodialysis-have-similar-patient-and-treatment-survival
#16
Karthik K Tennankore, Yingbo Na, Ron Wald, Christopher T Chan, Jeffrey Perl
Home hemodialysis (HHD) has many benefits, but less is known about relative outcomes when comparing different home-based hemodialysis modalities. Here, we compare patient and treatment survival for patients receiving short daily HHD (2-3 hours/5 plus sessions per week), nocturnal HHD (6-8 hours/5 plus sessions per week) and conventional HHD (3-6 hours/2-4 sessions per week). A nationally representative cohort of Canadian HHD patients from 1996-2012 was studied. The primary outcome was death or treatment failure (defined as a permanent return to in-center hemodialysis or peritoneal dialysis) using an intention to treat analysis and death-censored treatment failure as a secondary outcome...
August 23, 2017: Kidney International
https://www.readbyqxmd.com/read/28844316/identifying-early-pathogenic-events-during-vascular-calcification-in-uremic-rats
#17
Luis Hortells, Cecilia Sosa, Natalia Guillén, Susana Lucea, Ángel Millán, Víctor Sorribas
Vascular calcification in chronic kidney disease is a very complex process traditionally explained in multifactorial terms. Here we sought to clarify relevance of the diverse agents acting on vascular calcification in uremic rats and distinguish between initiating and complicating factors. After 5/6 nephrectomy, rats were fed a 1.2% phosphorus diet and analyzed at different time points. The earliest changes observed in the aortic wall were noticed 11 weeks after nephrectomy: increased Wnt inhibitor Dkk1 mRNA expression and tissue non-specific alkaline phosphatase (TNAP) expression and activity...
August 23, 2017: Kidney International
https://www.readbyqxmd.com/read/28844315/massively-parallel-sequencing-and-targeted-exomes-in-familial-kidney-disease-can-diagnose-underlying-genetic-disorders
#18
Andrew J Mallett, Hugh J McCarthy, Gladys Ho, Katherine Holman, Elizabeth Farnsworth, Chirag Patel, Jeffery T Fletcher, Amali Mallawaarachchi, Catherine Quinlan, Bruce Bennetts, Stephen I Alexander
Inherited kidney disease encompasses a broad range of disorders, with both multiple genes contributing to specific phenotypes and single gene defects having multiple clinical presentations. Advances in sequencing capacity may allow a genetic diagnosis for familial renal disease, by testing the increasing number of known causative genes. However, there has been limited translation of research findings of causative genes into clinical settings. Here, we report the results of a national accredited diagnostic genetic service for familial renal disease...
August 23, 2017: Kidney International
https://www.readbyqxmd.com/read/28844314/acute-kidney-injury-in-acute-on-chronic-liver-failure-where-does-hepatorenal-syndrome-fit
#19
REVIEW
Andrew Davenport, Mohammed Faisal Sheikh, Edmund Lamb, Banwari Agarwal, Rajiv Jalan
Renal dysfunction occurs in 25% to 50% of patients with cirrhosis admitted to the hospital with an acute episode of hepatic decompensation and may be due to underlying chronic kidney disease, an acute deterioration, or both. An acute deterioration in renal function in cirrhotic patients is now collectively referred to as acute kidney injury (AKI), which has been subclassified into different grades of severity that identify prognostic groups. Acute-on-chronic liver failure is characterized by acute hepatic and/or extrahepatic organ failure driven by a dysregulated immune response and systemic inflammatory response...
August 23, 2017: Kidney International
https://www.readbyqxmd.com/read/28843412/single-tubule-rna-seq-uncovers-signaling-mechanisms-that-defend-against-hyponatremia-in-siadh
#20
Jae Wook Lee, Mohammad Alsady, Chung-Lin Chou, Theun de Groot, Peter M T Deen, Mark A Knepper, Carolyn M Ecelbarger
In the syndrome of inappropriate antidiuretic hormone secretion (SIADH), hyponatremia is limited by onset of vasopressin-escape caused by loss of the water channel aquaporin-2 in the renal collecting duct despite high circulating vasopressin. Here, we use the methods of systems biology in a well-established rat model of SIADH to identify signaling pathways activated at the onset of vasopressin-escape. Using single-tubule RNA-Seq, full transcriptomes were determined in microdissected cortical collecting ducts of vasopressin-treated rats at 1, 2, and 4 days after initiation of oral water loading in comparison to time-control rats without water loading...
August 23, 2017: Kidney International
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