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Kidney International

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https://www.readbyqxmd.com/read/28094031/patients-receiving-frequent-hemodialysis-have-better-health-related-quality-of-life-compared-to-patients-receiving-conventional-hemodialysis
#1
Amit X Garg, Rita S Suri, Paul Eggers, Fredric O Finkelstein, Tom Greene, Paul L Kimmel, Alan S Kliger, Brett Larive, Robert M Lindsay, Andreas Pierratos, Mark Unruh, Glenn M Chertow
Most patients with end-stage kidney disease value their health-related quality of life (HRQoL) and want to know how it will be affected by their dialysis modality. We extended the findings of two prior clinical trial reports to estimate the effects of frequent compared to conventional hemodialysis on additional measures of HRQoL. The Daily Trial randomly assigned 245 patients to receive frequent (six times per week) or conventional (three times per week) in-center hemodialysis. The Nocturnal Trial randomly assigned 87 patients to receive frequent nocturnal (six times per week) or conventional (three times per week) home hemodialysis...
January 13, 2017: Kidney International
https://www.readbyqxmd.com/read/28094030/glucocorticoid-induced-leucine-zipper-protein-regulates-sodium-and-potassium-balance-in-the-distal-nephron
#2
Priyanka Rashmi, GianLuca Colussi, Michael Ng, Xinhao Wu, Atif Kidwai, David Pearce
Glucocorticoid induced leucine zipper protein (GILZ) is an aldosterone-regulated protein that controls sodium transport in cultured kidney epithelial cells. Mice lacking GILZ have been reported previously to have electrolyte abnormalities. However, the mechanistic basis has not been explored. Here we provide evidence supporting a role for GILZ in modulating the balance of renal sodium and potassium excretion by regulating the sodium-chloride cotransporter (NCC) activity in the distal nephron. Gilz(-/-) mice have a higher plasma potassium concentration and lower fractional excretion of potassium than wild type mice...
January 13, 2017: Kidney International
https://www.readbyqxmd.com/read/28089366/limited-reduction-in-uremic-solute-concentrations-with-increased-dialysis-frequency-and-time-in-the-frequent-hemodialysis-network-daily-trial
#3
Tammy L Sirich, Kara Fong, Brett Larive, Gerald J Beck, Glenn M Chertow, Nathan W Levin, Alan S Kliger, Natalie S Plummer, Timothy W Meyer
The Frequent Hemodialysis Network Daily Trial compared conventional three-times weekly treatment to more frequent treatment with a longer weekly treatment time in patients receiving in-center hemodialysis. Evaluation at one year showed favorable effects of more intensive treatment on left ventricular mass, blood pressure, and phosphate control, but modest or no effects on physical or cognitive performance. The current study compared plasma concentrations of uremic solutes in stored samples from 53 trial patients who received three-times weekly in-center hemodialysis for an average weekly time of 10...
January 12, 2017: Kidney International
https://www.readbyqxmd.com/read/28088326/acute-kidney-injury-due-to-tropical-infectious-diseases-and-animal-venoms-a-tale-of-2-continents
#4
REVIEW
Emmanuel A Burdmann, Vivekanand Jha
South and Southeast Asia and Latin American together comprise 46 countries and are home to approximately 40% of the world population. The sociopolitical and economic heterogeneity, tropical climate, and malady transitions characteristic of the region strongly influence disease behavior and health care delivery. Acute kidney injury epidemiology mirrors these inequalities. In addition to hospital-acquired acute kidney injury in tertiary care centers, these countries face a large preventable burden of community-acquired acute kidney injury secondary to tropical infectious diseases or animal venoms, affecting previously healthy young individuals...
January 11, 2017: Kidney International
https://www.readbyqxmd.com/read/28069266/the-clinicopathologic-characteristics-of-kidney-diseases-related-to-monotypic-iga-deposits
#5
Marguerite Vignon, Camille Cohen, Stanislas Faguer, Laure-Hélène Noel, Celine Guilbeau, Marion Rabant, Sarah Higgins, Aurélie Hummel, Alexandre Hertig, Hélène Francois, Moglie Lequintrec, Eve Vilaine, Bertrand Knebelmann, Jacques Pourrat, Dominique Chauveau, Jean-Michel Goujon, Vincent Javaugue, Guy Touchard, Khalil El Karoui, Frank Bridoux
Monoclonal gammopathy of renal significance (MGRS) regroups renal disorders caused by a monoclonal immunoglobulin without overt hematological malignancy. MGRS includes tubular disorders, glomerular disorders with organized deposits, and glomerular disorders with non-organized deposits, such as proliferative glomerulonephritis with monoclonal IgG deposits. Since glomerular involvement related to monotypic IgA deposits is poorly described we performed retrospective analysis and defined clinico-biological characteristics, renal pathology, and outcome in 19 referred patients...
January 6, 2017: Kidney International
https://www.readbyqxmd.com/read/28065518/membranous-nephropathy-integrating-basic-science-into-improved-clinical-management
#6
REVIEW
Daniel C Cattran, Paul E Brenchley
Idiopathic membranous nephropathy (INM) remains a common cause of the nephrotic syndrome in adults. The autoimmune nature of IMN was clearly delineated in 2009 with the identification of the glomerular-deposited IgG to be a podocyte receptor, phospholipase A2 receptor (PLA2R) in 70% to 75% of cases. This anti-PLA2R autoantibody, predominantly the IgG4 subclass, has been quantitated in serum using an enzyme-linked immunosorbent assay and has been used to aid diagnosis and monitor response to immunosuppressive therapy...
January 5, 2017: Kidney International
https://www.readbyqxmd.com/read/28065517/peritoneal-macrophage-heterogeneity-is-associated-with-different-peritoneal-dialysis-outcomes
#7
Chia-Te Liao, Robert Andrews, Leah E Wallace, Mohd Wajid A Khan, Ann Kift-Morgan, Nicholas Topley, Donald J Fraser, Philip R Taylor
Peritonitis remains the major obstacle for the maintenance of long-term peritoneal dialysis and dysregulated host peritoneal immune responses may compromise local anti-infectious defense, leading to treatment failure. Whilst, tissue mononuclear phagocytes, comprising macrophages and dendritic cells, are central to a host response to pathogens and the development of adaptive immune responses, they are poorly characterized in the human peritoneum. Combining flow cytometry with global transcriptome analysis, the phenotypic features and lineage identity of the major CD14(+) macrophage and CD1c(+) dendritic cell subsets in dialysis effluent were defined...
January 5, 2017: Kidney International
https://www.readbyqxmd.com/read/28081856/an-angiotensin-ii-type-1-receptor-binding-molecule-has-a-critical-role-in-hypertension-in-a-chronic-kidney-disease-model
#8
Ryu Kobayashi, Hiromichi Wakui, Kengo Azushima, Kazushi Uneda, Sona Haku, Kohji Ohki, Kotaro Haruhara, Sho Kinguchi, Miyuki Matsuda, Masato Ohsawa, Yoshiyuki Toya, Akira Nishiyama, Akio Yamashita, Katsuyuki Tanabe, Yohei Maeshima, Satoshi Umemura, Kouichi Tamura
Angiotensin II type 1 receptor-associated protein (ATRAP) promotes AT1R internalization along with suppression of hyperactivation of tissue AT1R signaling. Here, we provide evidence that renal ATRAP plays a critical role in suppressing hypertension in a mouse remnant kidney model of chronic kidney disease. The effect of 5/6 nephrectomy on endogenous ATRAP expression was examined in the kidney of C57BL/6 and 129/Sv mice. While 129/Sv mice with a remnant kidney showed decreased renal ATRAP expression and developed hypertension, C57BL/6 mice exhibited increased renal ATRAP expression and resistance to progressive hypertension...
January 4, 2017: Kidney International
https://www.readbyqxmd.com/read/28063595/the-mitochondrial-targeted-peptide-ss-31-improves-glomerular-architecture-in-mice-of-advanced-age
#9
Mariya T Sweetwyne, Jeffrey W Pippin, Diana G Eng, Kelly L Hudkins, Ying Ann Chiao, Matthew D Campbell, David J Marcinek, Charles E Alpers, Hazel H Szeto, Peter S Rabinovitch, Stuart J Shankland
Although age-associated changes in kidney glomerular architecture have been described in mice and man, the mechanisms are unknown. It is unclear if these changes can be prevented or even reversed by systemic therapies administered at advanced age. Using light microscopy and transmission electron microscopy, our results showed glomerulosclerosis with injury to mitochondria in glomerular epithelial cells in mice aged 26 months (equivalent to a 79-year-old human). To test the hypothesis that reducing mitochondrial damage in late age would result in lowered glomerulosclerosis, we administered the mitochondrial targeted peptide, SS-31, to aged mice...
January 4, 2017: Kidney International
https://www.readbyqxmd.com/read/28041626/obesity-increases-the-risk-of-end-stage-renal-disease-among-living-kidney-donors
#10
Jayme E Locke, Rhiannon D Reed, Allan Massie, Paul A MacLennan, Deirdre Sawinski, Vineeta Kumar, Shikha Mehta, Roslyn B Mannon, Robert Gaston, Cora E Lewis, Dorry L Segev
Determining candidacy for live kidney donation among obese individuals remains challenging. Among healthy non-donors, body mass index (BMI) above 30 is associated with a 16% increase in risk of end-stage renal disease (ESRD). However, the impact on the ESRD risk attributable to donation and living with only one kidney remains unknown. Here we studied the risk of ESRD associated with obesity at the time of donation among 119 769 live kidney donors in the United States. Maximum follow-up was 20 years. Obese (BMI above 30) live kidney donors were more likely male, African American, and had higher blood pressure...
December 29, 2016: Kidney International
https://www.readbyqxmd.com/read/28040266/angiotensin-ii-at1-receptor-signaling-is-necessary-for-cyclooxygenase-2-dependent-postnatal-nephron-generation
#11
Stefanie Frölich, Patrick Slattery, Dominique Thomas, Itamar Goren, Nerea Ferreiros, Boye L Jensen, Rolf M Nüsing
Deletion of cyclooxygenase-2 (COX-2) causes impairment of postnatal kidney development. Here we tested whether the renin angiotensin system contributes to COX-2-dependent nephrogenesis in mice after birth and whether a rescue of impaired renal development and function in COX-2(-/-) mice was achievable. Plasma renin concentration in mouse pups showed a birth peak and a second peak around day P8 during the first 10 days post birth. Administration of the angiotensin II receptor AT1 antagonist telmisartan from day P1 to P3 did not result in cortical damage...
December 28, 2016: Kidney International
https://www.readbyqxmd.com/read/28040265/pyruvate-dehydrogenase-kinase-4-deficiency-attenuates-cisplatin-induced-acute-kidney-injury
#12
Chang Joo Oh, Chae-Myeong Ha, Young-Keun Choi, Sungmi Park, Mi Sun Choe, Nam Ho Jeoung, Yang Hoon Huh, Hyo-Jeong Kim, Hee-Seok Kweon, Ji-Min Lee, Sun Joo Lee, Jae-Han Jeon, Robert A Harris, Keun-Gyu Park, In-Kyu Lee
Clinical prescription of cisplatin, one of the most widely used chemotherapeutic agents, is limited by its side effects, particularly tubular injury-associated nephrotoxicity. Since details of the underlying mechanisms are not fully understood, we investigated the role of pyruvate dehydrogenase kinase (PDK) in cisplatin-induced acute kidney injury. Among the PDK isoforms, PDK4 mRNA and protein levels were markedly increased in the kidneys of mice treated with cisplatin, and c-Jun N-terminal kinase activation was involved in cisplatin-induced renal PDK4 expression...
December 28, 2016: Kidney International
https://www.readbyqxmd.com/read/28040264/diagnosis-and-management-of-atherosclerotic-cardiovascular-disease-in-chronic-kidney-disease-a%C3%A2-review
#13
REVIEW
Roy O Mathew, Sripal Bangalore, Michael P Lavelle, Patricia A Pellikka, Mandeep S Sidhu, William E Boden, Arif Asif
Patients with chronic kidney disease (CKD) have a high prevalence of atherosclerotic cardiovascular disease, likely reflecting the presence of traditional risk factors. A greater distinguishing feature of atherosclerotic cardiovascular disease in CKD is the severity of the disease, which is reflective of an increase in inflammatory mediators and vascular calcification secondary to hyperparathyroidism of renal origin that are unique to patients with CKD. Additional components of atherosclerotic cardiovascular disease that are prominent in patients with CKD include microvascular disease and myocardial fibrosis...
December 28, 2016: Kidney International
https://www.readbyqxmd.com/read/28017326/the-association-of-anticoagulation-ischemic-stroke-and-hemorrhage-in-elderly-adults-with-chronic-kidney-disease-and-atrial-fibrillation
#14
Vaibhav Keskar, Eric McArthur, Ron Wald, Ziv Harel, Deborah Zimmerman, Amber O Molnar, Amit X Garg, Ngan N Lam, Megan K McCallum, Sarah E Bota, Jeffrey Perl, Manish M Sood
The utility of anticoagulants for ischemic stroke prophylaxis in elderly patients with chronic kidney disease (CKD) and atrial fibrillation remains uncertain. In this population-based retrospective cohort study, we determined the association of anticoagulant use with ischemic stroke or hemorrhage in elderly patients (66 years and older) with advanced chronic kidney disease (eGFR under 45 ml/min/1.73m(2)) and atrial fibrillation. We followed 6,544 patients with CKD and new onset atrial fibrillation, of whom 1,475 filled a prescription for an anticoagulant...
December 22, 2016: Kidney International
https://www.readbyqxmd.com/read/28017325/inflammation-and-elevated-levels-of-fibroblast-growth-factor-23-are-independent-risk-factors-for%C3%A2-death-in-chronic-kidney-disease
#15
Jair Munoz Mendoza, Tamara Isakova, Xuan Cai, Liz Y Bayes, Christian Faul, Julia J Scialla, James P Lash, Jing Chen, Jiang He, Sankar Navaneethan, Lavinia Negrea, Sylvia E Rosas, Matthias Kretzler, Lisa Nessel, Dawei Xie, Amanda Hyre Anderson, Dominic S Raj, Myles Wolf
Inflammation is a consequence of chronic kidney disease (CKD) and is associated with adverse outcomes in many clinical settings. Inflammation stimulates production of fibroblast growth factor 23 (FGF23), high levels of which are independently associated with mortality in CKD. Few large-scale prospective studies have examined inflammation and mortality in patients with CKD, and none tested the interrelationships among inflammation, FGF23, and risk of death. Therefore, we conducted a prospective investigation of 3875 participants in the Chronic Renal Insufficiency Cohort (CRIC) study with CKD stages 2 to 4 to test the associations of baseline plasma interleukin-6, high-sensitivity C-reactive protein, and FGF23 levels with all-cause mortality, censoring at the onset of end-stage renal disease...
December 22, 2016: Kidney International
https://www.readbyqxmd.com/read/28017324/the-pattern-recognition-receptor-mincle-is-essential-for-maintaining-the-m1-macrophage-phenotype-in-acute-renal-inflammation
#16
Lin L Lv, Patrick Ming-Kuen Tang, Chun J Li, Yong K You, Jinhong Li, Xiao-Ru Huang, Jun Ni, Min Feng, Bi C Liu, Hui-Yao Lan
Mincle (macrophage-inducible C-type lectin, Clec4e) is a transmembrane pattern recognition receptor involving the innate immunity, but its role in kidney disease is still unexplored. In the obstructed kidney of the unilateral ureteral obstruction model of renal injury, Mincle was specifically detected in the infiltrating M1 macrophages (CD68(+)iNOS(+) cells) on day one but was rapidly reduced following reduction of M1 macrophages during the progression of kidney injury. Interestingly, Mincle-expressing macrophages were progressively increased in the cisplatin-induced acute kidney injury model, where iNOS expression was detected in the CD68(+) cells following Mincle induction...
December 22, 2016: Kidney International
https://www.readbyqxmd.com/read/28010886/reappraisal-in-two-european-cohorts-of%C3%A2-the%C3%A2-prognostic-power-of-left-ventricular-mass%C3%A2-index%C3%A2-in-chronic-kidney-failure
#17
Giovanni Tripepi, Bruno Pannier, Graziella D'Arrigo, Francesca Mallamaci, Carmine Zoccali, Gerard London
Left ventricular hypertrophy is a strong causal risk factor of cardiovascular morbidity and death in end stage kidney failure, and its prognostic value is taken for granted in this population. However, the issue has never been formally tested by state-of-art prognostic analyses. Therefore, we determined the prognostic power of the left ventricular mass index (LVMI) for all-cause and cardiovascular death beyond and above that provided by well validated clinical risk scores, the annualized rate of occurrence cohort risk scores (ARO, all cause death risk and cardiovascular risk)...
December 20, 2016: Kidney International
https://www.readbyqxmd.com/read/27998645/thrombotic-microangiopathy-associated-with-monoclonal-gammopathy
#18
Aishwarya Ravindran, Ronald S Go, Fernando C Fervenza, Sanjeev Sethi
Thrombotic microangiopathy (TMA) is a rare disease comprising of a diverse set of disorders linked by a common histologic finding of endothelial injury. Monoclonal immunoglobulins may act as a potential trigger in the pathogenesis of TMA. To determine the prevalence of monoclonal gammopathy and clinicopathological features of TMA associated with monoclonal immunoglobulin, we performed a retrospective study in adults (18 and older) with a clinical diagnosis of TMA. Of 146 patients with TMA, we detected monoclonal immunoglobulin in 20 patients (13...
December 17, 2016: Kidney International
https://www.readbyqxmd.com/read/27998644/screening-diagnosis-and-management-of-patients-with-fabry-disease-conclusions-from-a-kidney-disease-improving-global-outcomes-kdigo-controversies-conference
#19
Raphael Schiffmann, Derralynn A Hughes, Gabor E Linthorst, Alberto Ortiz, Einar Svarstad, David G Warnock, Michael L West, Christoph Wanner
Patients with Fabry disease (FD) are at a high risk for developing chronic kidney disease and cardiovascular disease. The availability of specific but costly therapy has elevated the profile of this rare condition. This KDIGO conference addressed controversial areas in the diagnosis, screening, and management of FD, and included enzyme replacement therapy and nonspecific standard-of-care therapy for the various manifestations of FD. Despite marked advances in patient care and improved overall outlook, there is a need to better understand the pathogenesis of this glycosphingolipidosis and to determine the appropriate age to initiate therapy in all types of patients...
December 17, 2016: Kidney International
https://www.readbyqxmd.com/read/27998643/activated-erk1-2-increases-cd44-in-glomerular-parietal-epithelial-cells-leading-to-matrix-expansion
#20
Sebastian S Roeder, Taylor J Barnes, Jonathan S Lee, India Kato, Diana G Eng, Natalya V Kaverina, Maria W Sunseri, Christoph Daniel, Kerstin Amann, Jeffrey W Pippin, Stuart J Shankland
The glycoprotein CD44 is barely detected in normal mouse and human glomeruli, but is increased in glomerular parietal epithelial cells following podocyte injury in focal segmental glomerulosclerosis (FSGS). To determine the biological role and regulation of CD44 in these cells, we employed an in vivo and in vitro approach. Experimental FSGS was induced in CD44 knockout and wild-type mice with a cytotoxic podocyte antibody. Albuminuria, focal and global glomerulosclerosis (periodic acid-Schiff stain), and collagen IV staining were lower in CD44 knockout compared with wild-type mice with FSGS...
December 17, 2016: Kidney International
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