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American Journal of Nephrology

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https://www.readbyqxmd.com/read/29130990/increased-bone-morphogenetic-protein-signaling-in-the-cutaneous-vasculature-of-patients-with-calciphylaxis
#1
Sagar U Nigwekar, Pawina Jiramongkolchai, Florian Wunderer, Emily Bloch, Rika Ichinose, Rosalynn M Nazarian, Ravi I Thadhani, Rajeev Malhotra, Donald B Bloch
BACKGROUND: The objective of this study was to investigate the role of bone morphogenetic protein (BMP) signal transduction in the pathogenesis of calciphylaxis. METHODS: Skin biopsy specimens were obtained from 18 patients with, and 12 patients without, calciphylaxis. Tissue sections were stained with antibodies directed against BMP effector proteins phosphorylated-SMAD (p-SMAD) 1/5/9, inhibitor of DNA 1 (Id1), inhibitor of DNA 3 (Id3), and Runx2. The intensity of staining was scored semi-quantitatively as strong versus weak or absent...
November 9, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29130965/calciphylaxis-another-piece-of-the-puzzle
#2
Vincent M Brandenburg, Smeeta Sinha
No abstract text is available yet for this article.
November 9, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29131005/a-review-of-anesthetic-effects-on-renal-function-potential-organ-protection
#3
Negar Motayagheni, Sheshanna Phan, Crystal Eshraghi, Ala Nozari, Anthony Atala
BACKGROUND: Renal protection is a critical concept for anesthesiologists, nephrologists, and urologists, since anesthesia and renal function are highly interconnected and can potentially interfere with one another. Therefore, a comprehensive understanding of anesthetic drugs and their effects on renal function remains fundamental to the success of renal surgeries, especially transplant procedures. Some experimental studies have shown that some anesthetics provide protection against renal ischemia/reperfusion (IR) injury, but there is limited clinical evidence...
November 7, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29130991/pre-end-stage-renal-disease-hemoglobin-variability-predicts-post-end-stage-renal-disease-mortality-in-patients-transitioning-to-dialysis
#4
Keiichi Sumida, Charles Dyer Diskin, Miklos Z Molnar, Praveen K Potukuchi, Fridtjof Thomas, Jun Ling Lu, Connie M Rhee, Elani Streja, Kunihiro Yamagata, Kamyar Kalantar-Zadeh, Csaba P Kovesdy
BACKGROUND: Hemoglobin variability (Hb-var) has been associated with increased mortality both in non-dialysis dependent chronic kidney disease (NDD-CKD) and end-stage renal disease (ESRD) patients. However, the impact of Hb-var in advanced NDD-CKD on outcomes after dialysis initiation remains unknown. METHODS: Among 11,872 US veterans with advanced NDD-CKD transitioning to dialysis between October 2007 through September 2011, we assessed Hb-var calculated from the residual SD of at least 3 Hb values during the last 6 months before dialysis initiation (prelude period) using within-subject linear regression models, and stratified into quartiles...
November 7, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29130984/lymphocyte-cell-ratios-and-mortality-among-incident-hemodialysis-patients
#5
Christina Catabay, Yoshitsugu Obi, Elani Streja, Melissa Soohoo, Christina Park, Connie M Rhee, Csaba P Kovesdy, Takayuki Hamano, Kamyar Kalantar-Zadeh
BACKGROUND: Neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) have been previously suggested as oncologic prognostication markers. These are associated with malnutrition and inflammation, and hence, may provide benefit in predicting mortality among hemodialysis patients. METHODS: Among 108,548 incident hemodialysis patients in a large U.S. dialysis organization (2007-2011), we compared the mortality predictability of NLR and PLR with baseline and time-varying covariate Cox models using the receiver operating characteristic curve (AUROC), net reclassification index (NRI), and adjusted R2...
November 7, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29130954/effects-of-tolvaptan-addition-to-furosemide-in-normo-and-hyponatremia-patients-with-heart-failure-and-chronic-kidney-disease-stages-g3b-5-a-subanalysis-of-the-k-star-study
#6
Naoto Tominaga, Keisuke Kida, Takayuki Inomata, Naoki Sato, Tohru Izumi, Yoshihiro J Akashi, Yugo Shibagaki
BACKGROUND: Tolvaptan increases free water clearance (aquaresis) and thereby improves hyponatremia. Although hyponatremia on admission is common in patients with congestive heart failure (CHF), little is known regarding the response to tolvaptan in those who also have chronic kidney disease (CKD) with or without hyponatremia. The aim of this subanalysis was to investigate the differences in treatment response between normo- and hyponatremia patients with CHF and CKD stages G3b-5. METHODS: The Kanagawa Aquaresis Investigators Trial of Tolvaptan on HF Patients with Renal Impairment (K-STAR) was a multicenter, open-label, randomized, controlled prospective clinical trial that included 81 Japanese patients with CHF and residual signs of congestion despite oral furosemide treatment (≥40 mg/day)...
November 7, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29130949/performance-of-the-surprise-question-compared-to-prediction-models-in-hemodialysis-patients-a-prospective-study
#7
Rakesh Malhotra, Xia Tao, Yuedong Wang, Yuqi Chen, Rebecca H Apruzzese, Paul Balter, Qingqing Xiao, Len A Usvyat, Peter Kotanko, Stephan Thijssen
BACKGROUND: The surprise question (SQ) ("Would you be surprised if this patient were still alive in 6 or 12 months?") is used as a mortality prognostication tool in hemodialysis (HD) patients. We compared the performance of the SQ with that of prediction models (PMs) for 6- and 12-month mortality prediction. METHODS: Demographic, clinical, laboratory, and dialysis treatment indicators were used to model 6- and 12-month mortality probability in a HD patients training cohort (n = 6,633) using generalized linear models (GLMs)...
November 7, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29084409/a-comparison-of-the-safety-and-efficacy-of-hx575-epoetin-alfa-proposed-biosimilar-with-epoetin-alfa-in-patients-with-end-stage-renal-disease
#8
Matthew R Weir, Pablo E Pergola, Rajiv L Agarwal, Jeffrey C Fink, Nelson P Kopyt, Ajay K Singh, Jayant Kumar, Susanne Schmitt, Gregor Schaffar, Anita Rudy, Jim P McKay, Radmila Kanceva
BACKGROUND: HX575 (biosimilar epoetin alfa) was approved in Europe in 2007 for the treatment of chronic kidney disease (CKD)-related anemia. This study assessed the clinical equivalence of HX575 with the US-licensed reference epoetin alfa (Epogen®/Procrit®, Amgen/Janssen) following subcutaneous (SC) administration in dialysis patients with CKD-related anemia. METHODS: This randomized, double-blind, parallel-group, multicenter study (NCT01693029) was conducted at 49 US clinical sites...
October 30, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29069649/the-systemic-activation-of-programmed-death-1-pd-l1-axis-protects-systemic-lupus-erythematosus-model-from-nephritis
#9
Wenjun Liao, Hua Zheng, Sha Wu, Yanmei Zhang, Wei Wang, Zili Zhang, Chenfei Zhou, Hongjun Wu, Jie Min
BACKGROUND: Systemic lupus erythematosus (SLE) is characterized by abnormal activated T cells, autoreactive B cells, and massive cytokines. The CD4+ T cells determined B-cells differentiation and cytokines production. The programmed death 1 (PD-1) is the checkpoint immunoinhibitory receptor of activated T cells, and its engagement could exhaust T cells. In this study, we investigated the role of PD-1 systemic engagement with PD-L1-Ig in lupus-like nephritis in SLE mice. METHODS: The murine PD-L1-Ig was injected into SLE-prone mice...
October 26, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29017155/effectiveness-of-ihd-with-adsorptive-pmma-membrane-in-myeloma-cast-nephropathy-a-cohort-study
#10
Florence Sens, Déborah Chaintreuil, Anne Jolivot, Fitsum Guebre-Egziabher, Philip Robinson, Lionel Karlin, Frank Bridoux, Laurent Juillard
BACKGROUND: In patients with cast nephropathy and acute kidney injury (AKI) requiring dialysis, the reduction of serum free light chains (FLC) using chemotherapy and intensive hemodialysis (IHD) with a high cut-off filter may improve renal and patient outcomes. We evaluated the effectiveness of a combination of chemotherapy and IHD with an adsorbent polymethylmethacrylate membrane (IHD-PMMA) on renal recovery and survival. METHODS: A single-center retrospective cohort-study was conducted...
October 10, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29041011/hemodiafiltration-reduces-all-cause-and-cardiovascular-mortality-in-incident-hemodialysis-patients-a-propensity-matched-cohort-study
#11
Francisco Maduell, Javier Varas, Rosa Ramos, Alejandro Martin-Malo, Rafael Pérez-Garcia, Isabel Berdud, Francesc Moreso, Bernard Canaud, Stefano Stuard, Adelheid Gauly, Pedro Aljama, Jose Ignacio Merello
BACKGROUND: The majority of studies suggesting that online hemodiafiltration reduces the risk of mortality compared to hemodialysis (HD) have been performed in dialysis-prevalent populations. In this report, we conducted an epidemiologic study of mortality in incident dialysis patients, comparing post-dilution online hemodiafiltration and high-flux HD, with propensity score matching (PSM) used to correct indication bias. METHODS: Our study cohort comprised 3,075 incident dialysis patients treated in 64 Spanish Fresenius Medical Care clinics between January 2009 and December 2012...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29032376/impact-of-uric-acid-levels-on-kidney-disease-progression
#12
Hernan Rincon-Choles, Stacey E Jolly, Susana Arrigain, Victoria Konig, Jesse D Schold, Georges Nakhoul, Sankar D Navaneethan, Joseph V Nally, Michael B Rothberg
BACKGROUND: Hyperuricemia is associated with the progression of chronic kidney disease (CKD), but it is not known whether the relationship is causal. We examined the association of hyperuricemia and uric acid lowering therapy (UALT) with progression of CKD in patients with CKD 3 and 4 in the Cleveland Clinic CKD registry. METHODS: We included 1,676 patients with CKD stages 3 and 4 from Ohio, who had measured their uric acid (UA) levels a year prior to the recording of the second eGFR <60 mL/min/1...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29024935/venous-thromboembolism-and-the-risk-of-death-and-graft-loss-in-kidney-transplant-recipients
#13
Ngan N Lam, Amit X Garg, Greg A Knoll, S Joseph Kim, Krista L Lentine, Eric McArthur, Kyla L Naylor, Sarah E Bota, Manish M Sood
BACKGROUND: The implications of venous thromboembolism (VTE) for morbidity and mortality in kidney transplant recipients are not well described. METHODS: We conducted a retrospective study using linked healthcare databases in Ontario, Canada to determine the risk and complications of VTE in kidney transplant recipients from 2003 to 2013. We compared the incidence rate of VTE in recipients (n = 4,343) and a matched (1:4) sample of the general population (n = 17,372)...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29017166/the-role-of-the-mineralocorticoid-receptor-in-inflammation-focus-on-kidney-and-vasculature
#14
Zachary Belden, Jeffrey A Deiuliis, Mirela Dobre, Sanjay Rajagopalan
BACKGROUND: The remarkable success of clinical trials in mineralocorticoid receptor (MR) inhibition in heart failure has driven research on the physiological and pathological role(s) of nonepithelial MR expression. MR is widely expressed in the cardiovascular system and is a major determinant of endothelial function, smooth muscle tone, vascular remodeling, fibrosis, and blood pressure. An important new dimension is the appreciation of the role MR plays in immune cells and target organ damage in the heart, kidney and vasculature, and in the development of insulin resistance...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29017162/patiromer-lowers-serum-potassium-when-taken-without-food-comparison-to-dosing-with-food-from-an-open-label-randomized-parallel-group-hyperkalemia-study
#15
Pablo E Pergola, David M Spiegel, Suzette Warren, Jinwei Yuan, Matthew R Weir
BACKGROUND: Patiromer is a sodium-free, nonabsorbed, potassium binder approved for treatment of hyperkalemia. This open-label study compares the efficacy and safety of patiromer administered without food versus with food. METHODS: Adults with hyperkalemia (potassium ≥5.0 mEq/L) were randomized (1:1) to receive patiromer once daily without food or with food for 4 weeks. The dosage was adjusted (maximum: 25.2 g/day) using a prespecified titration schedule to achieve and maintain potassium within a target range (3...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29017152/high-uric-acid-induced-epithelial-mesenchymal-transition-of-renal-tubular-epithelial-cells-via-the-tlr4-nf-kb-signaling-pathway
#16
Huifang Liu, Jiachuan Xiong, Ting He, Tangli Xiao, Yan Li, Yanlin Yu, Yinghui Huang, Xinli Xu, Yunjian Huang, Jingbo Zhang, Bo Zhang, Jinghong Zhao
BACKGROUND: Hyperuricemia is an independent risk factor for causing chronic kidney disease and contributes to kidney fibrosis. After urate crystals get deposited in the kidney, they can cause hyperuricemia nephropathy, leading to glomerular hypertrophy and renal tubular interstitial fibrosis. Recent data showed that uric acid (UA) could induce epithelial mesenchymal transition (EMT) of renal tubular cells, in which NRLP3 inflammatory pathway was involved. However, whether TLR4/NF-κB signaling pathway is also involved in EMT of renal tubular cells induced by UA is not clear...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28950266/the-importance-of-a-just-right-serum-potassium-level
#17
Ankit Mehta, Michael Emmett
No abstract text is available yet for this article.
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28934744/association-of-serum-amyloid-a-with-kidney-outcomes-and-all-cause-mortality-in-american-indians-with-type-2-diabetes
#18
Pierre-Jean Saulnier, Brad P Dieter, Stephanie K Tanamas, Sterling M McPherson, Kevin M Wheelock, William C Knowler, Helen C Looker, Rick L Meek, Robert G Nelson, Katherine R Tuttle
BACKGROUND: Serum amyloid A (SAA) induces inflammation and apoptosis in kidney cells and is found to be causing the pathologic changes that are associated with diabetic kidney disease (DKD). Higher serum SAA concentrations were previously associated with increased risk of end-stage renal disease (ESRD) and death in persons with type 2 diabetes and advanced DKD. We explored the prognostic value of SAA in American Indians with type 2 diabetes without DKD or with early DKD. METHODS: SAA concentration was measured in serum samples obtained at the start of follow-up...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28930748/tobacco-use-a-chronic-kidney-disease-accelerant
#19
Amanda K Leonberg-Yoo, Michael R Rudnick
No abstract text is available yet for this article.
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28930719/vascular-access-placement-order-and-outcomes-in-hemodialysis-patients-a-longitudinal-study
#20
Mariana Murea, W Mark Brown, Jasmin Divers, Shahriar Moossavi, Todd W Robinson, Benjamin Bagwell, John M Burkart, Barry I Freedman
BACKGROUND: Arteriovenous accesses (AVA) in patients performing hemodialysis (HD) are labeled "permanent" for AV fistulas (AVF) or grafts (AVG) and "temporary" for tunneled central venous catheters (TCVC). Durability and outcomes of permanent vascular accesses based on the sequence in which they were placed or used receives little attention. This study analyzed longitudinal transitions between TCVC-based and AVA-based HD outcomes according to the order of placement. METHODS: All 391 patients initiating chronic HD via a TCVC between 2012 and 2013 at 12 outpatient academic dialysis units were included in this study...
2017: American Journal of Nephrology
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