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Journal of the American Society of Nephrology: JASN

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https://www.readbyqxmd.com/read/28432127/sex-differences-in-hospitalizations-with-maintenance-hemodialysis
#1
Scott V Adams, Matthew Rivara, Elani Streja, Alfred K Cheung, Onyebuchi A Arah, Kamyar Kalantar-Zadeh, Rajnish Mehrotra
Hospitalization is a major source of morbidity among patients with ESRD undergoing maintenance hemodialysis and is a significant contributor to health care costs. To identify subgroups at the highest risk of hospitalization, we analyzed by sex, age, and race, adjusting for demographic and clinical characteristics, the hospitalization rates, and 30-day readmissions for 333,756 hospitalizations among 111,653 patients undergoing maintenance hemodialysis in facilities operated by a large dialysis organization in the United States (2007-2011)...
April 21, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28428333/the-microrna-199a-214-cluster-targets-e-cadherin-and-claudin-2-and-promotes-high-glucose-induced-peritoneal-fibrosis
#2
Mingwen Che, Tiantian Shi, Shidong Feng, Huan Li, Xiaomin Zhang, Ning Feng, Weijuan Lou, Jianhua Dou, Guangbo Tang, Chen Huang, Guoshuang Xu, Qi Qian, Shiren Sun, Lijie He, Hanmin Wang
Serum response factor (SRF) was found to be involved in the phenotypic transition and fibrosis of the peritoneal membrane during treatment with peritoneal dialysis (PD), but the exact mechanism remains unclear. SRF regulates microRNAs (miRNAs) that contain the SRF-binding consensus (CArG) element in the promoter region. Therefore, we investigated whether the miR-199a/214 gene cluster, which contains a CArG element in its promoter, is directly regulated by SRF. High-glucose (HG) treatment significantly unregulated the expression of the miR-199a-5p/214-3p gene cluster in human peritoneal mesothelial cells (HPMCs)...
April 20, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28428332/education-in-nephrology-fellowship-a-survey-based-needs-assessment
#3
Robert W Rope, Kurtis A Pivert, Mark G Parker, Stephen M Sozio, Sylvia Bereknyei Merell
Educational needs assessments for nephrology fellowship training are limited. This study assessed fellows' perceptions of current educational needs and interest in novel modalities that may improve their educational experience and quantified educational resources used by programs and fellows. We distributed a seven-question electronic survey to all United States-based fellows receiving complimentary American Society of Nephrology (ASN) membership at the end of the 2015-2016 academic year in conjunction with the ASN Nephrology Fellows Survey...
April 20, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28428331/a-personalized-model-of-coq2-nephropathy-rescued-by-the-wild-type-coq2-allele-or-dietary-coenzyme-q10-supplementation
#4
Jun-Yi Zhu, Yulong Fu, Adam Richman, Zhanzheng Zhao, Patricio E Ray, Zhe Han
Clinical studies have identified patients with nephrotic syndrome caused by mutations in genes involved in the biosynthesis of coenzyme Q10 (CoQ10), a lipid component of the mitochondrial electron transport chain and an important antioxidant. However, the cellular mechanisms through which these mutations induce podocyte injury remain obscure. Here, we exploited the striking similarities between Drosophila nephrocytes and human podocytes to develop a Drosophila model of these renal diseases, and performed a systematic in vivo analysis assessing the role of CoQ10 pathway genes in renal function...
April 20, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28424277/janus-kinase-2-regulates-transcription-factor-eb-expression-and-autophagy-completion-in-glomerular-podocytes
#5
Tamadher A Alghamdi, Syamantak Majumder, Karina Thieme, Sri N Batchu, Kathryn E White, Youan Liu, Angela S Brijmohan, Bridgit B Bowskill, Suzanne L Advani, Minna Woo, Andrew Advani
The nonreceptor kinase Janus kinase 2 (JAK2) has garnered attention as a promising therapeutic target for the treatment of CKD. However, being ubiquitously expressed in the adult, JAK2 is also likely to be necessary for normal organ function. Here, we investigated the phenotypic effects of JAK2 deficiency. Mice in which JAK2 had been deleted from podocytes exhibited an elevation in urine albumin excretion that was accompanied by increased podocyte autophagosome fractional volume and p62 aggregation, which are indicative of impaired autophagy completion...
April 19, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28424276/thrombin-induced-podocyte-injury-is-protease-activated-receptor-dependent
#6
Ruchika Sharma, Amanda P Waller, Shipra Agrawal, Katelyn J Wolfgang, Hiep Luu, Khurrum Shahzad, Berend Isermann, William E Smoyer, Marvin T Nieman, Bryce A Kerlin
Nephrotic syndrome is characterized by massive proteinuria and injury of specialized glomerular epithelial cells called podocytes. Studies have shown that, whereas low-concentration thrombin may be cytoprotective, higher thrombin concentrations may contribute to podocyte injury. We and others have demonstrated that ex vivo plasma thrombin generation is enhanced during nephrosis, suggesting that thrombin may contribute to nephrotic progression. Moreover, nonspecific thrombin inhibition has been shown to decrease proteinuria in nephrotic animal models...
April 19, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28411201/corrigendum
#7
(no author information available yet)
No abstract text is available yet for this article.
April 14, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28408440/global-cardiovascular-and-renal-outcomes-of-reduced-gfr
#8
Bernadette Thomas, Kunihiro Matsushita, Kalkidan Hassen Abate, Ziyad Al-Aly, Johan Ärnlöv, Kei Asayama, Robert Atkins, Alaa Badawi, Shoshana H Ballew, Amitava Banerjee, Lars Barregård, Elizabeth Barrett-Connor, Sanjay Basu, Aminu K Bello, Isabela Bensenor, Jaclyn Bergstrom, Boris Bikbov, Christopher Blosser, Hermann Brenner, Juan-Jesus Carrero, Steve Chadban, Massimo Cirillo, Monica Cortinovis, Karen Courville, Lalit Dandona, Rakhi Dandona, Kara Estep, João Fernandes, Florian Fischer, Caroline Fox, Ron T Gansevoort, Philimon N Gona, Orlando M Gutierrez, Samer Hamidi, Sarah Wulf Hanson, Jonathan Himmelfarb, Simerjot K Jassal, Sun Ha Jee, Vivekanand Jha, Aida Jimenez-Corona, Jost B Jonas, Andre Pascal Kengne, Yousef Khader, Young-Ho Khang, Yun Jin Kim, Barbara Klein, Ronald Klein, Yoshihiro Kokubo, Dhaval Kolte, Kristine Lee, Andrew S Levey, Yongmei Li, Paulo Lotufo, Hassan Magdy Abd El Razek, Walter Mendoza, Hirohito Metoki, Yejin Mok, Isao Muraki, Paul M Muntner, Hiroyuki Noda, Takayoshi Ohkubo, Alberto Ortiz, Norberto Perico, Kevan Polkinghorne, Rajaa Al-Radaddi, Giuseppe Remuzzi, Gregory Roth, Dietrich Rothenbacher, Michihiro Satoh, Kai-Uwe Saum, Monika Sawhney, Ben Schöttker, Anoop Shankar, Michael Shlipak, Diego Augusto Santos Silva, Hideaki Toyoshima, Kingsley Ukwaja, Mitsumasa Umesawa, Stein Emil Vollset, David G Warnock, Andrea Werdecker, Kazumasa Yamagishi, Yuichiro Yano, Naohiro Yonemoto, Maysaa El Sayed Zaki, Mohsen Naghavi, Mohammad H Forouzanfar, Christopher J L Murray, Josef Coresh, Theo Vos
The burden of premature death and health loss from ESRD is well described. Less is known regarding the burden of cardiovascular disease attributable to reduced GFR. We estimated the prevalence of reduced GFR categories 3, 4, and 5 (not on RRT) for 188 countries at six time points from 1990 to 2013. Relative risks of cardiovascular outcomes by three categories of reduced GFR were calculated by pooled random effects meta-analysis. Results are presented as deaths for outcomes of cardiovascular disease and ESRD and as disability-adjusted life years for outcomes of cardiovascular disease, GFR categories 3, 4, and 5, and ESRD...
April 13, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28404664/new-insights-into-podocyte-biology-in-glomerular-health-and-disease
#9
Suheir Assady, Nicola Wanner, Karl L Skorecki, Tobias B Huber
Podocyte and glomerular research is center stage for the development of improved preventive and therapeutic strategies for chronic progressive kidney diseases. Held April 3-6, 2016, the 11th International Podocyte Conference took place in Haifa and Jerusalem, Israel, where participants from all over the world presented their work on new developments in podocyte research. In this review, we briefly highlight the advances made in characterizing the mechanisms involved in podocyte development, metabolism, acquired injury, and repair, including progress in determining the roles of genetic variants and microRNA in particular, as well as the advances made in diagnostic techniques and therapeutics...
April 12, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28404663/decoding-acute-myocardial-infarction-among-patients-on-dialysis
#10
EDITORIAL
Charles E Howard, Peter A McCullough
No abstract text is available yet for this article.
April 12, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28400446/randomized-trial-of-c5a-receptor-inhibitor-avacopan-in-anca-associated-vasculitis
#11
David R W Jayne, Annette N Bruchfeld, Lorraine Harper, Matthias Schaier, Michael C Venning, Patrick Hamilton, Volker Burst, Franziska Grundmann, Michel Jadoul, István Szombati, Vladimír Tesař, Mårten Segelmark, Antonia Potarca, Thomas J Schall, Pirow Bekker
Alternative C activation is involved in the pathogenesis of ANCA-associated vasculitis. However, glucocorticoids used as treatment contribute to the morbidity and mortality of vasculitis. We determined whether avacopan (CCX168), an orally administered, selective C5a receptor inhibitor, could replace oral glucocorticoids without compromising efficacy. In this randomized, placebo-controlled trial, adults with newly diagnosed or relapsing vasculitis received placebo plus prednisone starting at 60 mg daily (control group), avacopan (30 mg, twice daily) plus reduced-dose prednisone (20 mg daily), or avacopan (30 mg, twice daily) without prednisone...
April 11, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28400445/microrna-23a-and-microrna-27a-mimic-exercise-by-ameliorating-ckd-induced-muscle-atrophy
#12
Bin Wang, Cong Zhang, Aiqing Zhang, Hui Cai, S Russ Price, Xiaonan H Wang
Muscle atrophy is a frequent complication of CKD, and exercise can attenuate the process. This study investigated the role of microRNA-23a (miR-23a) and miR-27a in the regulation of muscle mass in mice with CKD. These miRs are located in a gene cluster that is regulated by the transcription factor NFAT. CKD mice expressed less miR-23a in muscle than controls, and resistance exercise (muscle overload) increased the levels of miR-23a and miR-27a in CKD mice. Injection of an adeno-associated virus encoding the miR-23a/27a/24-2 precursor RNA into the tibialis anterior muscles of normal and CKD mice led to increases in mature miR-23a and miR-27a but not miR-24-2 in the muscles of both cohorts...
April 11, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28396523/genetic-complexities-of-the-hla-region-and-idiopathic-membranous-nephropathy
#13
EDITORIAL
Nikol Mladkova, Krzysztof Kiryluk
No abstract text is available yet for this article.
April 10, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28385806/urine-ammonium-predicts-clinical-outcomes-in-hypertensive-kidney-disease
#14
Kalani L Raphael, David J Carroll, Jennifer Murray, Tom Greene, Srinivasan Beddhu
Metabolic acidosis is associated with poor outcomes in CKD. Because impaired renal ammonium excretion is important in the pathogenesis of acidosis, urine ammonium excretion might be a better and perhaps earlier acid-base indicator of risk than serum bicarbonate, particularly in patients without acidosis. We evaluated the association between baseline ammonium excretion and clinical outcomes in African American Study of Kidney Disease and Hypertension participants (n=1044). Median daily ammonium excretion was 19...
April 6, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28381550/clinical-and-genetic-spectrum-of-bartter-syndrome-type-3
#15
Elsa Seys, Olga Andrini, Mathilde Keck, Lamisse Mansour-Hendili, Pierre-Yves Courand, Christophe Simian, Georges Deschenes, Theresa Kwon, Aurélia Bertholet-Thomas, Guillaume Bobrie, Jean Sébastien Borde, Guylhène Bourdat-Michel, Stéphane Decramer, Mathilde Cailliez, Pauline Krug, Paul Cozette, Jean Daniel Delbet, Laurence Dubourg, Dominique Chaveau, Marc Fila, Noémie Jourde-Chiche, Bertrand Knebelmann, Marie-Pierre Lavocat, Sandrine Lemoine, Djamal Djeddi, Brigitte Llanas, Ferielle Louillet, Elodie Merieau, Maria Mileva, Luisa Mota-Vieira, Christiane Mousson, François Nobili, Robert Novo, Gwenaëlle Roussey-Kesler, Isabelle Vrillon, Stephen B Walsh, Jacques Teulon, Anne Blanchard, Rosa Vargas-Poussou
Bartter syndrome type 3 is a clinically heterogeneous hereditary salt-losing tubulopathy caused by mutations of the chloride voltage-gated channel Kb gene (CLCNKB), which encodes the ClC-Kb chloride channel involved in NaCl reabsorption in the renal tubule. To study phenotype/genotype correlations, we performed genetic analyses by direct sequencing and multiplex ligation-dependent probe amplification and retrospectively analyzed medical charts for 115 patients with CLCNKB mutations. Functional analyses were performed in Xenopus laevis oocytes for eight missense and two nonsense mutations...
April 5, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28381549/a-dominant-mutation-in-nuclear-receptor-interacting-protein-1-causes-urinary-tract-malformations-via-dysregulation-of-retinoic-acid-signaling
#16
Asaf Vivante, Nina Mann, Hagith Yonath, Anna-Carina Weiss, Maike Getwan, Michael M Kaminski, Tobias Bohnenpoll, Catherine Teyssier, Jing Chen, Shirlee Shril, Amelie T van der Ven, Hadas Ityel, Johanna Magdalena Schmidt, Eugen Widmeier, Stuart B Bauer, Simone Sanna-Cherchi, Ali G Gharavi, Weining Lu, Daniella Magen, Rachel Shukrun, Richard P Lifton, Velibor Tasic, Horia C Stanescu, Vincent Cavaillès, Robert Kleta, Yair Anikster, Benjamin Dekel, Andreas Kispert, Soeren S Lienkamp, Friedhelm Hildebrandt
Congenital anomalies of the kidney and urinary tract (CAKUT) are the most common cause of CKD in the first three decades of life. However, for most patients with CAKUT, the causative mutation remains unknown. We identified a kindred with an autosomal dominant form of CAKUT. By whole-exome sequencing, we identified a heterozygous truncating mutation (c.279delG, p.Trp93fs*) of the nuclear receptor interacting protein 1 gene (NRIP1) in all seven affected members. NRIP1 encodes a nuclear receptor transcriptional cofactor that directly interacts with the retinoic acid receptors (RARs) to modulate retinoic acid transcriptional activity...
April 5, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28373276/polycystic-kidney-disease-with-hyperinsulinemic-hypoglycemia-caused-by-a-promoter-mutation-in-phosphomannomutase-2
#17
Oscar Rubio Cabezas, Sarah E Flanagan, Horia Stanescu, Elena García-Martínez, Richard Caswell, Hana Lango-Allen, Montserrat Antón-Gamero, Jesús Argente, Anna-Marie Bussell, Andre Brandli, Chris Cheshire, Elizabeth Crowne, Simona Dumitriu, Robert Drynda, Julian P Hamilton-Shield, Wesley Hayes, Alexis Hofherr, Daniela Iancu, Naomi Issler, Craig Jefferies, Peter Jones, Matthew Johnson, Anne Kesselheim, Enriko Klootwijk, Michael Koettgen, Wendy Lewis, José María Martos, Monika Mozere, Jill Norman, Vaksha Patel, Andrew Parrish, Celia Pérez-Cerdá, Jesús Pozo, Sofia A Rahman, Neil Sebire, Mehmet Tekman, Peter D Turnpenny, William Van't Hoff, Daan H H M Viering, Michael N Weedon, Patricia Wilson, Lisa Guay-Woodford, Robert Kleta, Khalid Hussain, Sian Ellard, Detlef Bockenhauer
Hyperinsulinemic hypoglycemia (HI) and congenital polycystic kidney disease (PKD) are rare, genetically heterogeneous disorders. The co-occurrence of these disorders (HIPKD) in 17 children from 11 unrelated families suggested an unrecognized genetic disorder. Whole-genome linkage analysis in five informative families identified a single significant locus on chromosome 16p13.2 (logarithm of odds score 6.5). Sequencing of the coding regions of all linked genes failed to identify biallelic mutations. Instead, we found in all patients a promoter mutation (c...
April 3, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28373275/k-alcification-protection-in-dialysis-patients-the-underestimated-phenomenon-of-vitamin-k-deficiency
#18
EDITORIAL
Markus Ketteler, Vincent Matthias Brandenburg
No abstract text is available yet for this article.
April 3, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28360221/nfat5-and-slc4a10-loci-associate-with-plasma-osmolality
#19
Carsten A Böger, Mathias Gorski, Gearoid M McMahon, Huichun Xu, Yen-Pei C Chang, Peter J van der Most, Gerjan Navis, Ilja M Nolte, Martin H de Borst, Weihua Zhang, Benjamin Lehne, Marie Loh, Sian-Tsung Tan, Eric Boerwinkle, Morgan E Grams, Peggy Sekula, Man Li, Beth Wilmot, James G Moon, Paul Scheet, Francesco Cucca, Xiangjun Xiao, Leo-Pekka Lyytikäinen, Graciela Delgado, Tanja B Grammer, Marcus E Kleber, Sanaz Sedaghat, Fernando Rivadeneira, Tanguy Corre, Zoltan Kutalik, Sven Bergmann, Carrie M Nielson, Priya Srikanth, Alexander Teumer, Martina Müller-Nurasyid, Anne Catharina Brockhaus, Arne Pfeufer, Wolfgang Rathmann, Annette Peters, Martha Matsumoto, Mariza de Andrade, Elizabeth J Atkinson, Cassianne Robinson-Cohen, Ian H de Boer, Shih-Jen Hwang, Iris M Heid, Martin Gögele, Maria Pina Concas, Toshiko Tanaka, Stefania Bandinelli, Mike A Nalls, Andrew Singleton, Salman M Tajuddin, Adebowale Adeyemo, Jie Zhou, Ayo Doumatey, Shannon McWeeney, Joanne Murabito, Nora Franceschini, Michael Flessner, Michael Shlipak, James G Wilson, Guanjie Chen, Charles N Rotimi, Alan B Zonderman, Michele K Evans, Luigi Ferrucci, Olivier Devuyst, Mario Pirastu, Alan Shuldiner, Andrew A Hicks, Peter Paul Pramstaller, Bryan Kestenbaum, Sharon L R Kardia, Stephen T Turner, LifeLines Cohort Study, Tamara Ellefson Briske, Christian Gieger, Konstantin Strauch, Christa Meisinger, Thomas Meitinger, Uwe Völker, Matthias Nauck, Henry Völzke, Peter Vollenweider, Murielle Bochud, Gerard Waeber, Mika Kähönen, Terho Lehtimäki, Winfried März, Abbas Dehghan, Oscar H Franco, Andre G Uitterlinden, Albert Hofman, Herman A Taylor, John C Chambers, Jaspal S Kooner, Caroline S Fox, Robert Hitzemann, Eric S Orwoll, Cristian Pattaro, David Schlessinger, Anna Köttgen, Harold Snieder, Afshin Parsa, David M Cohen
Disorders of water balance, an excess or deficit of total body water relative to body electrolyte content, are common and ascertained by plasma hypo- or hypernatremia, respectively. We performed a two-stage genome-wide association study meta-analysis on plasma sodium concentration in 45,889 individuals of European descent (stage 1 discovery) and 17,637 additional individuals of European descent (stage 2 replication), and a transethnic meta-analysis of replicated single-nucleotide polymorphisms in 79,506 individuals (63,526 individuals of European descent, 8765 individuals of Asian Indian descent, and 7215 individuals of African descent)...
March 30, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28360220/the-use-of-sildenafil-for-glomerular-disease
#20
EDITORIAL
Nicholas J Tardi, Jochen Reiser
No abstract text is available yet for this article.
March 30, 2017: Journal of the American Society of Nephrology: JASN
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