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Pediatric nephrology

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380 papers 100 to 500 followers
By P O Pediatrics, Nephrology
https://www.readbyqxmd.com/read/29975121/should-we-really-stop-treating-patients-with-iga-nephropathy-with-steroids
#1
REVIEW
F Locatelli, L Del Vecchio, C Ponticelli
IgA nephropathy (IgAN) is the most common primary glomerulonephritis all over the world. Once considered as a benign disease, today the scientific community is aware that a significant percentage of patients eventually progress to end-stage kidney disease (ESKD). The rate of progression is often very slow. Since 1980s, several therapeutic attempts have been made with steroids. Despite different molecules, doses, and lengths of treatment, the majority of uncontrolled and controlled studies found benefits in terms of proteinuria reduction and reduction of the risk of ESKD...
June 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29998120/iga-nephropathy-a-european-perspective-in-the-corticosteroid-treatment
#2
REVIEW
Rosanna Coppo
Background: IgA nephropathy (IgAN) is detected in Europe in 22% of glomerular diseases diagnosed by biopsy. The frequency of IgAN as cause of ESRD in Europe has increased in the last decades, accounting for 35% of young and adult transplanted patients. These data justify the interest for risk factors and a possible therapeutic approach. Summary: Insight into a European perspective of IgAN was allowed by the multicenter study VALIGA, on 1,147 patients, almost all Caucasians, with follow-up of 4...
June 2018: Kidney Diseases
https://www.readbyqxmd.com/read/29292861/antibody-mediated-rejection-new-approaches-in-prevention-and-management
#3
R A Montgomery, A Loupy, D L Segev
Despite the success of desensitization protocols, antibody-mediated rejection (AMR) remains a significant contributor to renal allograft failure in patients with donor-specific antibodies. Plasmapheresis and high-dose intravenous immunoglobulin have proved to be effective treatments to prevent and treat AMR, but irreversible injury in the form of transplant glomerulopathy can commonly manifest months to years later. There is an unmet need to improve the outcomes for patients at risk for AMR. Updated Banff criteria now take into account the increasing understanding of the complex and heterogeneous nature of AMR phenotypes, including the timing of rejection, subclinical and chronic AMR, C4d-negative AMR, and antibody-mediated vascular rejection...
January 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29724182/favorable-effect-of-bortezomib-in-dense-deposit-disease-associated-with-monoclonal-gammopathy-a-case-report
#4
Shuma Hirashio, Ayaka Satoh, Takahiro Arima, Kouichi Mandai, Tadasuke Awaya, Kumi Oshima, Shigeo Hara, Takao Masaki
BACKGROUND: Complement component 3 (C3) glomerulopathy, which includes dense deposit disease (DDD) and C3 glomerulonephritis, is caused by dysregulation of the alternative complement pathway. In most cases, C3 glomerulopathy manifests pathologically with membranoproliferative glomerulonephritis-like features. An association between C3 glomerulopathy and monoclonal gammopathy was recently reported in several cases, raising the possibility that C3 glomerulopathy is the underlying pathological process in monoclonal gammopathy of renal significance...
May 3, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29321782/functional-characterization-of-the-disease-associated-n-terminal-complement-factor-h-mutation-w198r
#5
Marcell Cserhalmi, Barbara Uzonyi, Nicolas S Merle, Dorottya Csuka, Edgar Meusburger, Karl Lhotta, Zoltán Prohászka, Mihály Józsi
Dysregulation of the complement alternative pathway is involved in the pathogenesis of several diseases, including the kidney diseases atypical hemolytic uremic syndrome (aHUS) and C3 glomerulopathy (C3G). In a patient, initially diagnosed with chronic glomerulonephritis, possibly C3G, and who 6 years later had an episode of aHUS, a heterozygous missense mutation leading to a tryptophan to arginine exchange (W198R) in the factor H (FH) complement control protein (CCP) 3 domain has previously been identified...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29497606/network-for-early-onset-cystic-kidney-diseases-a-comprehensive-multidisciplinary-approach-to-hereditary-cystic-kidney-diseases-in-childhood
#6
Jens Christian König, Andrea Titieni, Martin Konrad
Hereditary cystic kidney diseases comprise a complex group of genetic disorders representing one of the most common causes of end-stage renal failure in childhood. The main representatives are autosomal recessive polycystic kidney disease, nephronophthisis, Bardet-Biedl syndrome, and hepatocyte nuclear factor-1beta nephropathy. Within the last years, genetic efforts have brought tremendous progress for the molecular understanding of hereditary cystic kidney diseases identifying more than 70 genes. Yet, genetic heterogeneity, phenotypic variability, a lack of reliable genotype-phenotype correlations and the absence of disease-specific biomarkers remain major challenges for physicians treating children with cystic kidney diseases...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29340311/hyponatremia-and-the-brain
#7
REVIEW
Fabrice Gankam Kengne, Guy Decaux
Hyponatremia is defined by low serum sodium concentration and is the most common electrolyte disorder encountered in clinical practice. Serum sodium is the main determinant of plasma osmolality, which, in turn, affects cell volume. In the presence of low extracellular osmolality, cells will swell if the adaptation mechanisms involved in the cell volume maintenance are inadequate. The most dramatic effects of hyponatremia on the brain are seen when serum sodium concentration decreases in a short period, allowing little or no adaptation...
January 2018: KI Reports
https://www.readbyqxmd.com/read/29344504/new-findings-on-the-pathogenesis-of-distal-renal-tubular-acidosis
#8
REVIEW
Francesco Trepiccione, Federica Prosperi, Luigi Regenburgh de la Motte, Christian A Hübner, Regine Chambrey, Dominique Eladari, Giovambattista Capasso
Background: Distal renal tubular acidosis (dRTA) is characterized by an impairment of the urinary acidification process in the distal nephron. Complete or incomplete metabolic acidosis coupled with inappropriately alkaline urine are the hallmarks of this condition. Genetic forms of dRTA are caused by loss of function mutations of either SLC4A1 , encoding the AE1 anion exchanger, or ATP6V1B1 and ATP6V0A4 , encoding for the B1 and a4 subunits of the vH+ ATPase, respectively. These genes are crucial for the function of A-type intercalated cells (A-IC) of the distal nephron...
December 2017: Kidney Diseases
https://www.readbyqxmd.com/read/28701203/discovery-of-a-novel-dominant-mutation-in-the-ren-gene-after-forty-years-of-renal-disease-a-case-report
#9
Rhian L Clissold, Helen C Clarke, Olivera Spasic-Boskovic, Kim Brugger, Stephen Abbs, Coralie Bingham, Charles Shaw-Smith
BACKGROUND: Heterozygous mutations in the gene encoding renin (REN) cause autosomal dominant tubulointerstitial kidney disease (ADTKD), early-onset anaemia and hyperuricaemia; only four different mutations have been described in the published literature to date. We report a novel dominant REN mutation discovered in an individual after forty years of renal disease. CASE PRESENTATION: A 57 year old Caucasian woman with chronic kidney disease stage five was reviewed in a regional joint renal genetics clinic...
July 12, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28781372/uromodulin-from-physiology-to-rare-and-complex-kidney-disorders
#10
REVIEW
Olivier Devuyst, Eric Olinger, Luca Rampoldi
Uromodulin (also known as Tamm-Horsfall protein) is exclusively produced in the kidney and is the most abundant protein in normal urine. The function of uromodulin remains elusive, but the available data suggest that this protein might regulate salt transport, protect against urinary tract infection and kidney stones, and have roles in kidney injury and innate immunity. Interest in uromodulin was boosted by genetic studies that reported involvement of the UMOD gene, which encodes uromodulin, in a spectrum of rare and common kidney diseases...
September 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/29217307/autosomal-dominant-tubulointerstitial-kidney-disease-due-to-muc1-mutation
#11
Samuel Mon-Wei Yu, Anthony J Bleyer, Kisra Anis, Leal Herlitz, Martina Živná, Helena Hůlková, Glen S Markowitz, Belinda Jim
Mucin 1 kidney disease, previously referred to as medullary cystic kidney disease type 1, is a rare hereditary kidney disease. It is one of several diseases now termed autosomal dominant tubulointerstitial kidney disease, as proposed by a KDIGO (Kidney Disease: Improving Global Outcomes) consensus report in 2014. Autosomal dominant tubulointerstitial kidney diseases share common clinical findings, such as autosomal dominant inheritance, bland urinary sediment, absent to mild proteinuria, and progressive loss of kidney function...
April 2018: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29146700/phenotypic-spectrum-of-children-with-nephronophthisis-and-related-ciliopathies
#12
Jens König, Birgitta Kranz, Sabine König, Karl Peter Schlingmann, Andrea Titieni, Burkhard Tönshoff, Sandra Habbig, Lars Pape, Karsten Häffner, Matthias Hansen, Anja Büscher, Martin Bald, Heiko Billing, Raphael Schild, Ulrike Walden, Tobias Hampel, Hagen Staude, Magdalena Riedl, Norbert Gretz, Martin Lablans, Carsten Bergmann, Friedhelm Hildebrandt, Heymut Omran, Martin Konrad
BACKGROUND AND OBJECTIVES: Genetic heterogeneity and phenotypic variability are major challenges in familial nephronophthisis and related ciliopathies. To date, mutations in 20 different genes ( NPHP1 to -20 ) have been identified causing either isolated kidney disease or complex multiorgan disorders. In this study, we provide a comprehensive and detailed characterization of 152 children with a special focus on extrarenal organ involvement and the long-term development of ESRD. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We established an online-based registry (www...
December 7, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28003083/gitelman-syndrome-consensus-and-guidance-from-a-kidney-disease-improving-global-outcomes-kdigo-controversies-conference
#13
Anne Blanchard, Detlef Bockenhauer, Davide Bolignano, Lorenzo A Calò, Etienne Cosyns, Olivier Devuyst, David H Ellison, Fiona E Karet Frankl, Nine V A M Knoers, Martin Konrad, Shih-Hua Lin, Rosa Vargas-Poussou
Gitelman syndrome (GS) is a rare, salt-losing tubulopathy characterized by hypokalemic metabolic alkalosis with hypomagnesemia and hypocalciuria. The disease is recessively inherited, caused by inactivating mutations in the SLC12A3 gene that encodes the thiazide-sensitive sodium-chloride cotransporter (NCC). GS is usually detected during adolescence or adulthood, either fortuitously or in association with mild or nonspecific symptoms or both. The disease is characterized by high phenotypic variability and a significant reduction in the quality of life, and it may be associated with severe manifestations...
January 2017: Kidney International
https://www.readbyqxmd.com/read/28827377/clinical-practice-guideline-for-screening-and-management-of-high-blood-pressure-in-children-and-adolescents
#14
Joseph T Flynn, David C Kaelber, Carissa M Baker-Smith, Douglas Blowey, Aaron E Carroll, Stephen R Daniels, Sarah D de Ferranti, Janis M Dionne, Bonita Falkner, Susan K Flinn, Samuel S Gidding, Celeste Goodwin, Michael G Leu, Makia E Powers, Corinna Rea, Joshua Samuels, Madeline Simasek, Vidhu V Thaker, Elaine M Urbina
These pediatric hypertension guidelines are an update to the 2004 "Fourth Report on the Diagnosis, Evaluation, and Treatment of High Blood Pressure in Children and Adolescents." Significant changes in these guidelines include (1) the replacement of the term "prehypertension" with the term "elevated blood pressure," (2) new normative pediatric blood pressure (BP) tables based on normal-weight children, (3) a simplified screening table for identifying BPs needing further evaluation, (4) a simplified BP classification in adolescents ≥13 years of age that aligns with the forthcoming American Heart Association and American College of Cardiology adult BP guidelines, (5) a more limited recommendation to perform screening BP measurements only at preventive care visits, (6) streamlined recommendations on the initial evaluation and management of abnormal BPs, (7) an expanded role for ambulatory BP monitoring in the diagnosis and management of pediatric hypertension, and (8) revised recommendations on when to perform echocardiography in the evaluation of newly diagnosed hypertensive pediatric patients (generally only before medication initiation), along with a revised definition of left ventricular hypertrophy...
September 2017: Pediatrics
https://www.readbyqxmd.com/read/28542241/signification-of-distal-urinary-acidification-defects-in-hypocitraturic-patients
#15
Valentina Forni Ogna, Anne Blanchard, Rosa Vargas-Poussou, Adam Ogna, Stéphanie Baron, Jean-Philippe Bertocchio, Caroline Prot-Bertoye, Jérôme Nevoux, Julie Dubourg, Gérard Maruani, Margarida Mendes, Alejandro Garcia-Castaño, Cyrielle Treard, Nelly Lepottier, Pascal Houillier, Marie Courbebaisse
BACKGROUND AND OBJECTIVES: Hypocitraturia has been associated with metabolic acidosis and mineral disorders. The aim of this study was to investigate the occurrence of urinary acidification defects underlying hypocitraturia. MATERIALS AND METHODS: This retrospective observational study included 67 patients (32 men), aged 40.7±15.1 years with hypocitraturia (<1.67 mmol/24-h) and nephrolithiasis, nephrocalcinosis, and/or bone demineralization, referred to our center from 2000 to 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28842398/anca-glomerulonephritis-and-vasculitis
#16
REVIEW
J Charles Jennette, Patrick H Nachman
ANCA vasculitis has an associated autoimmune response that produces ANCAs that induce distinct pathologic lesions. Pauci-immune necrotizing and crescentic GN is a frequent component of ANCA vasculitis. ANCA vasculitis is associated with ANCA specific for myeloperoxidase (MPO-ANCA) or proteinase 3 (PR3-ANCA). A diagnosis of ANCA vasculitis should always specify the serotype as MPO-ANCA positive, PR3-ANCA positive, or ANCA-negative. To fully characterize a patient, the serotype also should be accompanied by the clinicopathologic variant if this can be determined: microscopic polyangiitis, granulomatosis with polyangiitis (Wegener), eosinophilic granulomatosis with polyangiitis (Churg-Strauss), or renal-limited vasculitis...
October 6, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28842060/after-4-decades-of-lupus-nephritis-trials-is-there-a-best-therapy
#17
EDITORIAL
Andrew S Bomback
No abstract text is available yet for this article.
September 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28555299/life-with-one-kidney
#18
Michiel F Schreuder
Life with a solitary functioning kidney (SFK) may be different from that when born with two kidneys. Based on the hyperfiltration hypothesis, a SFK may lead to glomerular damage with hypertension, albuminuria and progression towards end-stage renal disease. As the prognosis of kidney donors was considered to be very good, having a SFK has been considered to be a benign condition. In contrast, our research group has demonstrated that being born with or acquiring a SFK in childhood results in renal injury before adulthood in over 50% of those affected...
April 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28298181/early-onset-of-adck4-glomerulopathy-with-renal-failure-a-case-report
#19
Ksenija Lolin, Benedetta D Chiodini, Elise Hennaut, Brigitte Adams, Karin Dahan, Khalid Ismaili
BACKGROUND: We present a rare early presentation of a ADCK4-related glomerulopathy. This case is of interest as potentially treatable if genetic results are timely obtained. CASE PRESENTATION: We report the case of a 5-year-old boy who was identified with significant proteinuria by a urinary routine screening program for school children. Physical examination revealed dysplastic ears and abnormal folded pinna. Albumin level was 41 g/L (39-53 g/L), and urine proteins/creatinine ratio was 2...
March 16, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28257644/a-single-center-analysis-of-henoch-schonlein-purpura-nephritis-with-nephrotic-proteinuria-in-children
#20
Dan Feng, Wen-Yan Huang, Sheng Hao, Xiao-Ling Niu, Ping Wang, Ying Wu, Guang-Hua Zhu
BACKGROUND: In children with Henoch-Schonlein purpura nephritis (HSPN), the degree of proteinuria has been proven to be not only a sign of kidney damage, but also an accelerator of kidney disease progression. Nephrotic proteinuria at disease onset has been proposed as a predictor of a poor renal outcome. This study aims to assess the clinical and pathological features of HSPN with nephrotic proteinuria in a single center. METHODS: One hundred thirty-seven patients with HSPN who visited Shanghai Children's Hospital from January 2009 to December 2013 were retrospectively reviewed...
March 4, 2017: Pediatric Rheumatology Online Journal
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