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Pediatric Nephrology: Journal of the International Pediatric Nephrology Association

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https://www.readbyqxmd.com/read/28429121/renovascular-hypertension-results-in-adulthood-of-renal-autotransplantation-performed-in-children
#1
Bertrand Chavent, Ambroise Duprey, Marie-Pierre Lavocat, Christine Fichtner, Anne-Marie Beraud, Jean-Noel Albertini, Jean-Pierre Favre, Nicolas Maillard, Xavier Barral
BACKGROUND: This study describes the long-term results of renal autotransplantation for renovascular hypertension performed in children who are now 21 years of age or older. METHODS: Sixteen children (4 boys, 12 girls) with a mean age of 11.2 years at the time of the procedure underwent ex-vivo surgery at the university hospital of Saint-Etienne between 1992 and 2008. Acetylsalicylic acid was used for antiplatelet therapy in the postoperative period, without routine anticoagulation...
April 20, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28417217/levels-of-cystatin-c-in-low-and-high-flux-hemodialysis-in-children-with-end-stage-renal-disease
#2
Fatina I Fadel, Abbass A Mourad, Azza M O Abdel Rahman, Hafez M Bazaraa, Mohamed Farouk Mohamed, Dalia H El-Lebedy, Mohamed M Soliman
BACKGROUND: Cystatin-C (CyC) is a middle molecule that is freely filtered at the glomerulus and almost completely reabsorbed by the proximal tubules. The aim of this study was to evaluate serum CyC and its reduction ratio as a biomarker for assessing the adequacy of the hemodialysis (HD) sessions in children with end-stage renal disease on maintenance HD. We also compared levels of CyC in patients on low-flux HD (LFH) and high-flux HD (HFH). METHODS: Forty patients were included in the study and divided into two groups, with one group (16 patients) receiving HFH and the other group receiving LFH (24 patients) (high-flux and low-flux polysulfone filters, respectively)...
April 17, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28412770/anemia-in-chronic-kidney-disease
#3
Meredith A Atkinson, Bradley A Warady
Anemia is common and associated with adverse outcomes in children with chronic kidney disease (CKD). Many factors contribute to declining hemoglobin as CKD progresses, but impaired production of erythropoietin by failing kidneys is a central cause. Hepcidin-mediated iron restriction also contributes to anemia by downregulating both intestinal iron absorption and release of stored iron for erythropoiesis. The core components of anemia management remain erythropoiesis-stimulating agents (ESA) and iron supplementation, but despite these therapies, a substantial number of children remain anemic...
April 15, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28411317/race-obesity-and-the-renin-angiotensin-aldosterone-system-treatment-response-in-children-with-primary-hypertension
#4
Andrew M South, Lester Arguelles, Gal Finer, Craig B Langman
BACKGROUND: Pediatric primary hypertension (HTN) is increasingly recognized, but the effect of patient characteristics such as obesity and race on treatment outcomes is not well described. The renin-angiotensin-aldosterone system (RAAS) may also contribute to HTN. We hypothesized patient parameters of these factors, including baseline RAAS, influence blood pressure (BP) response to pharmacological treatment in HTN. METHODS: This was a retrospective cohort of 102 consecutive patients with HTN...
April 14, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28405841/focal-segmental-glomerulosclerosis-and-medullary-nephrocalcinosis-in-children-with-adck4-mutations
#5
Eujin Park, Hee Gyung Kang, Young Hun Choi, Kyoung Bun Lee, Kyung Chul Moon, Hyeon Joo Jeong, Michio Nagata, Hae Il Cheong
BACKGROUND: Mutations in the AarF domain containing kinase 4 gene (ADCK4), one of the novel genes causing steroid-resistant nephrotic syndrome (SRNS), usually manifest as isolated adolescent-onset focal segmental glomerulosclerosis (FSGS). ADCK4 interacts with components of the coenzyme Q10 (CoQ10) biosynthesis pathway. METHODS: The incidence and phenotypes of patients with ADCK4 mutations were investigated in a cohort of Korean pediatric patients with SRNS. RESULTS: Among the 53 patients enrolled in the study the incidence of ADCK4-associated FSGS was 7...
April 12, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28401301/enhancing-dialyser-clearance-from-target-to-development
#6
Kamonwan Tangvoraphonkchai, Andrew Davenport
Products of metabolism accumulate in kidney failure and potentially have toxic effects. Traditionally these uraemic toxins are classified as small, middle-sized and protein-bound toxins, and clearance during dialysis is affected by diffusion, convection and adsorption. As current dialysis practice effectively clears small solutes, increasing evidence supports a toxic effect for middle-sized and protein-bound toxins. Therefore, newer approaches to standard dialysis practice are required to look beyond urea clearance...
April 12, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28396942/frequent-hemodialysis-history-of-the-modality-and-assessment-of-outcomes
#7
Douglas M Silverstein
About 660,000 individuals have end-stage renal disease in the USA, the vast majority of whom are receiving standard, in-center, thrice-weekly hemodialysis (HD). The morbidity and mortality among patients receiving standard HD remain unacceptably high. Studies conducted over the past two decades have provided a substantial amount of information on the advantages and drawbacks of providing more frequent HD treatment, either in-center or at home. In this article I summarize these studies, focusing special attention on the randomized, cross-over study assessing outcomes in children who received either frequent, in-center HD or traditional, thrice-weekly, in-center HD performed by Laskin et al...
April 11, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28396941/effect-of-the-timing-of-dialysis-initiation-on-left-ventricular-hypertrophy-and-%C3%A4-nflammation-in-pediatric-patients
#8
Sevcan A Bakkaloğlu, Yaşar Kandur, Erkin Serdaroğlu, Aytül Noyan, Aysun Karabay Bayazıt, Lale Sever, Sare Gülfem Özlü, Gül Özçelik, İsmail Dursun, Caner Alparslan
BACKGROUND: The optimal time for dialysis initiation in adults and children with chronic kidney disease remains unclear. The aim of this study was to evaluate the impact of dialysis timing on different outcome parameters, in particular left ventricular (LV) morphology and inflammation, in pediatric patients receiving peritoneal dialysis and hemodialysis. METHODS: The medical records of pediatric dialysis patients who were followed-up in nine pediatric nephrology centers in Turkey between 2008 and 2013 were retrospectively reviewed...
April 10, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28391546/association-among-prematurity-30%C3%A2-weeks-gestational-age-blood-pressure-urinary-albumin-calcium-and-phosphate-in-early-childhood
#9
Namrata Vashishta, Vidya Surapaneni, Sanjay Chawla, Gaurav Kapur, Girija Natarajan
BACKGROUND: There is a paucity of data on blood pressures (BP), urinary albumin, and mineral excretion in early childhood in contemporary cohorts of extremely low gestational age (GA) neonates. Our aim was to compare BPs and the urinary excretion of albumin, calcium, and phosphate in preterm and term-born cohorts in early childhood. METHODS: This was a prospective observational study conducted at a single center, involving children <5 years age, born preterm (GA <30 weeks) or at term (≥37 weeks' GA)...
April 8, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28389745/short-frequent-5-days-per-week-in-center-hemodialysis-versus-3-days-per-week-treatment-a-randomized-crossover-pilot-trial-through-the-midwest-pediatric-nephrology-consortium
#10
Benjamin L Laskin, Guixia Huang, Eileen King, Denis F Geary, Christoph Licht, Joshua P Metlay, Susan L Furth, Tom Kimball, Mark Mitsnefes
BACKGROUND: No controlled trials in children with end-stage kidney disease have assessed the benefits of more frequently administered hemodialysis (HD). METHODS: We conducted a multicenter, crossover pilot trial to determine if short, more frequent (5 days per week) in-center HD was feasible and associated with improvements in blood pressure compared with three conventional HD treatments per week. Because adult studies have not controlled for the weekly duration of dialysis, we fixed the total treatment time at 12 h a week of dialysis during two 3-month study periods; only frequency varied from 5 to 3 days per week between study periods...
April 8, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28389744/the-gut-kidney-axis-in-iga-nephropathy-role-of-microbiota-and-diet-on-genetic-predisposition
#11
Rosanna Coppo
Recent data suggest that gut-associated lymphoid tissue (GALT) plays a major role in the development of immunoglobulin A (IgA) nephropathy (IgAN). A genome-wide association study showed that most loci associated with the risk of IgAN are also associated with immune-mediated inflammatory bowel diseases, maintenance of the intestinal barrier and regulation of response to gut pathogens. Studies involving experimental models have demonstrated a pivotal role of intestinal microbiota in the development of IgAN in mice producing high levels of IgA and in transgenic mice overexpressing BAFF, a B-cell factor crucial for IgA synthesis, indicating the role of genetic background, B-cell activity, GALT intestinal immunity and diet...
April 7, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28382567/evaluating-risk-factors-for-chronic-kidney-disease-in-pediatric-patients-with-sickle-cell-anemia
#12
Jeffrey D Lebensburger, Gary R Cutter, Thomas H Howard, Paul Muntner, Daniel I Feig
BACKGROUND: Patients with sickle cell anemia (SCA) have an increased prevalence of nephropathy and mortality from chronic kidney disease (CKD). METHODS: We evaluated the association of hyperuricemia and nocturnal hypertension with lower estimated glomerular filtration rate (eGFR) using cystatin-C in patients aged 10-21 years with the HbSS or HbSB0 form of the disease during a non-acute clinic visit. eGFR and uric acid measurements were obtained in 83 and 81 participants, respectively, and 24-h ambulatory blood pressure monitoring (ABPM) was performed in 44 participants...
April 5, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28382566/kinetics-of-the-cell-cycle-arrest-biomarkers-timp-2-igfbp-7-for-prediction-of-acute-kidney-injury-in-infants-after-cardiac-surgery
#13
Katja M Gist, Stuart L Goldstein, Julia Wrona, Jeffrey A Alten, Rajit K Basu, David S Cooper, Danielle E Soranno, Jane Duplantis, Christopher Altmann, Zhiqian Gao, Sarah Faubel
BACKGROUND: Tissue inhibitor metalloproteinase-2 (TIMP-2) and insulin-like growth factor binding protein-7 (IGFBP-7) are cell-cycle arrest biomarkers that have been shown to be predictive of acute kidney injury (AKI) in critically ill adults. AKI affects a large proportion (40%) of children following cardiac surgery. The aim of this study was to describe the kinetics of TIMP-2*IGFBP-7 and test its ability to predict AKI in infants following cardiac surgery. METHODS: A multicenter prospective study was performed in infants undergoing cardiac surgery with cardiopulmonary bypass (CPB) from October 2013 to January 2015...
April 5, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28378030/potassium-regulation-in-the-neonate
#14
Melvin Bonilla-Félix
Potassium, the major cation in intracelluar fluids, is essential for vital biological functions. Neonates maintain a net positive potassium balance, which is fundamental to ensure somatic growth but places these infants, especially those born prematurely, at risk for life-threatening disturbances in potassium concentration [K(+)] in the extracellular fluid compartment. Potassium conservation is achieved by maximizing gastrointestinal absorption and minimizing renal losses. A markedly low glomerular filtration rate, plus adaptations in tubular transport along the nephron, result in low potassium excretion in the urine of neonates...
April 4, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28378029/nephrotoxicity-in-children-with-frequently-relapsing-nephrotic-syndrome-receiving-long-term-cyclosporine-treatment
#15
Yuko Hamasaki, Fumiyo Komaki, Kenji Ishikura, Riku Hamada, Tomoyuki Sakai, Hiroshi Hataya, Kentaro Ogata, Takashi Ando, Masataka Honda
BACKGROUND: Steroid-sparing drugs, such as cyclosporine, are recommended as treatment for children with frequently relapsing nephrotic syndrome (FRNS) and steroid-related toxicities. We recently reported a high rate of relapsing nephrotic syndrome 2 years after discontinuation of cyclosporine treatment, suggesting that long-term treatment is necessary. Cyclosporine-associated nephrotoxicity (CAN) is a potential side effect of long-term cyclosporine treatment. METHODS: We retrospectively reviewed pediatric patients with FRNS treated with cyclosporine for ≥3 years at a single center between 1999 and 2012...
April 4, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28364132/challenges-in-establishing-genotype-phenotype-correlations-in-arpkd-case-report-on-a-toddler-with-two-severe-pkhd1-mutations
#16
Kathrin Ebner, Claudia Dafinger, Nadina Ortiz-Bruechle, Friederike Koerber, Bernhard Schermer, Thomas Benzing, Jörg Dötsch, Klaus Zerres, Lutz Thorsten Weber, Bodo B Beck, Max Christoph Liebau
BACKGROUND: Autosomal recessive polycystic kidney disease (ARPKD) constitutes an important cause of pediatric end stage renal disease and is characterized by a broad phenotypic variability. The disease is caused by mutations in a single gene, Polycystic Kidney and Hepatic Disease 1 (PKHD1), which encodes a large transmembrane protein of poorly understood function called fibrocystin. Based on current knowledge of genotype-phenotype correlations in ARPKD, two truncating mutations are considered to result in a severe phenotype with peri- or neonatal mortality...
March 31, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28361230/acute-kidney-injury-and-fluid-overload-in-infants-and-children-after-cardiac-surgery
#17
David M Kwiatkowski, Catherine D Krawczeski
Acute kidney injury is a common and serious complication after congenital heart surgery, particularly among infants. This comorbidity has been independently associated with adverse outcomes including an increase in mortality. Postoperative acute kidney injury has a complex pathophysiology with many risk factors, and therefore no single medication or therapy has been demonstrated to be effective for treatment or prevention. However, it has been established that the associated fluid overload is one of the major determinants of morbidity, particularly in infants after cardiac surgery...
March 30, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28361229/obesity-in-pediatric-kidney-transplant-recipients-and-the-risks-of-acute-rejection-graft-loss-and-death
#18
Maleeka Ladhani, Samantha Lade, Stephen I Alexander, Louise A Baur, Philip A Clayton, Stephen McDonald, Jonathan C Craig, Germaine Wong
BACKGROUND: Obesity is prevalent in children with chronic kidney disease (CKD), but the health consequences of this combination of comorbidities are uncertain. The aim of this study was to evaluate the impact of obesity on the outcomes of children following kidney transplantation. METHODS: Using data from the ANZDATA Registry (1994-2013), we assessed the association between age-appropriate body mass index (BMI) at the time of transplantation and the subsequent development of acute rejection (within the first 6 months), graft loss and death using adjusted Cox proportional hazards models...
March 30, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28353010/children-with-henoch-sch%C3%A3-nlein-purpura-with-low-complement-levels-follow-up-for-6%C3%A2-years
#19
LETTER
Qiang Lin, Xiaozhong Li
No abstract text is available yet for this article.
March 29, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28353009/acute-kidney-injury-in-children-with-sickle-cell-disease-compounding-a-chronic-problem
#20
EDITORIAL
Cherry Mammen, Mei Lin Bissonnette, Douglas G Matsell
In an article recently published in Pediatric Nephrology, Baddam and colleagues discuss the relatively underreported clinical problem of repeated episodes of acute kidney injury (AKI) in children with sickle cell disease (SCD). Their report is a cautionary note about the importance of repeated kidney injury on the background of underlying chronic kidney injury and its potential implications on long-term kidney outcome. In children and adults with SCD, this includes the effects of repeated vaso-occlusive crises and the management of these painful episodes with non-steroidal anti-inflammatory drugs...
March 28, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
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