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pediatric GFR

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https://www.readbyqxmd.com/read/28706488/postnatal-maturation-of-the-glomerular-filtration-rate-in-conventional-growing-piglets-as-potential-juvenile-animal-model-for-preclinical-pharmaceutical-research
#1
Elke Gasthuys, Mathias Devreese, Joske Millecam, Stanislas Sys, Katrien Vanderperren, Joris Delanghe, Johan Vande Walle, Marjolein Heyndrickx, Siska Croubels
Adequate animal models are required to study the preclinical pharmacokinetics (PK), pharmacodynamics (PD) and safety of drugs in the pediatric subpopulation. Over the years, pigs were presented as a potential animal model, since they display a high degree of anatomical and physiological similarities with humans. To assess the suitability of piglets as a preclinical animal model for children, the ontogeny and maturation processes of several organ systems have to be unraveled and compared between both species...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28685173/health-related-quality-of-life-of-children-with-pre-dialysis-chronic-kidney-disease
#2
Hee Sun Baek, Hee Gyung Kang, Hyun Jin Choi, Hae Il Cheong, Il Soo Ha, Kyung Hee Han, Seong Heon Kim, Hee Yeon Cho, Jae Il Shin, Young Seo Park, Joo Hoon Lee, Joongyub Lee, Curie Ahn, Min Hyun Cho
BACKGROUND: The goal of this study was to evaluate the quality of life (QOL) of Asian children with pre-dialysis chronic kidney disease (CKD) and to reveal the factors influencing the QOL of children with CKD. METHODS: We performed a cross-sectional study of the PedsQL 4.0 Generic Core Scale Module in the KNOW-PedCKD (KoreaN cohort study for Outcome in patients with Pediatric Chronic Kidney Disease) cohort, and compared the child self-reported and parent proxy-reported QOL of the pediatric cohort...
July 6, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28659167/deviations-from-the-expected-relationship-between-serum-fgf23-and-other-markers-in-children-with-ckd-a-cross-sectional-study
#3
Daisy Liu, Ana Catalina Alvarez-Elías, Brooke Wile, Vladimir Belostotsky, Guido Filler
BACKGROUND: High levels of fibroblast growth factor-23 (FGF23) are associated with mortality. In chronic kidney disease (CKD), FGF23 levels rise as renal function declines. We analyzed the contribution of laboratory values to the variance of FGF23 levels in relationship to a curve of expected FGF23 levels for a given GFR. METHODS: Following approval by the research ethics boards, we measured FGF23, CysC eGFR, creatinine, urea, albumin, calcium, phosphate, vitamin D metabolites, PTH, alkaline phosphatase, CRP, and venous gases in 141 pediatric CKD patients (45, 37, 32, 13 and 14 CKD stages I, II, III, IV, and V, respectively)...
June 28, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28573537/derivation-of-new-equations-to-estimate-glomerular-filtration-rate-in-pediatric-oncology-patients
#4
Vanessa E Millisor, Jessica K Roberts, Yilun Sun, Li Tang, Vinay M Daryani, David Gregornik, Shane J Cross, Deborah Ward, Jennifer L Pauley, Alejandro Molinelli, Rachel C Brennan, Clinton F Stewart
BACKGROUND AND OBJECTIVE: Monitoring renal function is critical in treating pediatric patients, especially when dosing nephrotoxic agents. We evaluated the validity of the bedside Schwartz and Brandt equations in pediatric oncology patients and developed new equations for estimated glomerular filtration rate (eGFR) in these patients. METHODS: A retrospective analysis was conducted comparing eGFR using the bedside Schwartz and Brandt equations to measured GFR (mGFR) from technetium-99m diethylenetriamine pentaacetic acid ((99m)Tc-DTPA) between January 2007 and August 2013...
June 2, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28550606/renal-injury-in-pediatric-anorexia-nervosa-a-retrospective-study
#5
Chantal Stheneur, Sebastien J Bergeron, Jean-Yves Frappier, Olivier Jamoulle, Danielle Taddeo, Marc Sznajder, Anne-Laure Lapeyraque
PURPOSE: Although primarily a mental health disorder, anorexia nervosa (AN) has many physical consequences. Among them, the consequences on kidney function are often underestimated. We evaluated renal function in adolescent AN inpatients and investigated the correlation between the GFR and intrinsic patient characteristics. METHODS: A single-center retrospective study was conducted on 51 patients hospitalized for the restrictive type of AN in 2013. Data were divided into: (1) medical history of AN; (2) growth parameters and vital signs upon admission; and (3) blood tests...
May 26, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/28549535/relationships-of-measured-iohexol-gfr-and-estimated-gfr-with-ckd-related-biomarkers-in-children-and-adolescents
#6
Derek K Ng, George J Schwartz, Bradley A Warady, Susan L Furth, Alvaro Muñoz
BACKGROUND: 2 valid and reliable estimated glomerular filtration rate (GFR) equations for the pediatric population have been developed from directly measured GFR data in the Chronic Kidney Disease in Children (CKiD) cohort: the full CKiD and bedside CKiD equations. Although adult GFR estimating equations replicate relationships of measured GFR with biomarkers, it is unclear whether similar patterns exist among children and adolescents with chronic kidney disease (CKD). STUDY DESIGN: Prospective cohort study in children and adolescents...
May 24, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28546304/comparison-of-methods-of-estimating-creatinine-clearance-in-pediatric-patients
#7
Danielle Padgett, Andrew Ostrenga, Lindsey Lepard
PURPOSE: A retrospective study was conducted to compare various methods of measuring serum creatinine (SCr) values for use in pediatric renal function assessments, including a method aligned with a recently implemented national SCr testing standard. METHODS: Demographic, medication-use, and selected laboratory data were collected from the hospital records of a sample of pediatric patients (n = 91) who underwent 12- or 24-hour timed urine collection for determination of creatinine clearance (CLcr) over a 2-year period...
June 1, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/28536123/randomized-controlled-trial-of-mineralocorticoid-receptor-blockade-in-children-with-chronic-kidney-allograft-nephropathy
#8
Mara Medeiros, Luis Velásquez-Jones, Ana M Hernández, Guillermo Ramón-García, Saúl Valverde, Yolanda Fuentes, Arindal Vargas, Mauricio Patiño, Rosalba Pérez-Villalva, Juan Antonio Ortega-Trejo, Jonatan Barrera-Chimal, Norma A Bobadilla
BACKGROUND AND OBJECTIVES: We showed that mineralocorticoid receptor blockade (MRB) prevented acute and chronic cyclosporine nephropathy (CsA-Nx) in the rat. The aim of this translational study was to investigate the effect of long-term eplerenone administration on renal allograft function in children with biopsy-proven chronic allograft nephropathy (CAN). DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Renal transplant children <18 years, biopsy-proven CAN, and a GFR>40 ml/min per 1...
May 23, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28523356/evaluation-of-height-dependent-and-height-independent-methods-of-estimating-baseline-serum-creatinine-in-critically-ill-children
#9
Erin Hessey, Rami Ali, Marc Dorais, Geneviève Morissette, Michael Pizzi, Nikki Rink, Philippe Jouvet, Jacques Lacroix, Véronique Phan, Michael Zappitelli
BACKGROUND: Baseline serum creatinine (bSCr) is required for diagnosing acute kidney injury (AKI). In children, bSCr is commonly defined as the lowest measurement within 3 months of admission. Measured values are often missing and estimating bSCr using height-based glomerular filtration rate (GFR) equations is problematic when height is unavailable. METHODS: This is a retrospective cohort study including 538 children admitted to the intensive care unit (ICU) between 2003 and 2005 at two centers in Canada, with measured bSCr, height, and ICU-SCr values...
May 18, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28521564/estimating-glomerular-filtration-rate-gfr-in-children-the-average-between-a-cystatin-c-and-a-creatinine-based-equation-improves-estimation-of-gfr-in-both-children-and-adults-and-enables-diagnosing-shrunken-pore-syndrome
#10
Felicia Leion, Josefine Hegbrant, Emil den Bakker, Magnus Jonsson, Magnus Abrahamson, Ulf Nyman, Jonas Björk, Veronica Lindström, Anders Larsson, Arend Bökenkamp, Anders Grubb
Estimating glomerular filtration rate (GFR) in adults by using the average of values obtained by a cystatin C- (eGFRcystatin C) and a creatinine-based (eGFRcreatinine) equation shows at least the same diagnostic performance as GFR estimates obtained by equations using only one of these analytes or by complex equations using both analytes. Comparison of eGFRcystatin C and eGFRcreatinine plays a pivotal role in the diagnosis of Shrunken Pore Syndrome, where low eGFRcystatin C compared to eGFRcreatinine has been associated with higher mortality in adults...
May 19, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28515693/rolipram-improves-outcome-in-a-rat-model-of-infant-sepsis-induced-cardiorenal-syndrome
#11
Clark R Sims, Sharda P Singh, Shengyu Mu, Neriman Gokden, Dala Zakaria, Trung C Nguyen, Philip R Mayeux
While the mortality rate associated with sepsis in children has fallen over the years, it still remains unacceptably high. The development of both acute cardiac dysfunction and acute kidney injury during severe sepsis is categorized as type 5 cardiorenal syndrome (CRS) and is poorly understood in infants. To address this lack of understanding and the need for an appropriate animal model in which to conduct relevant preclinical studies, we developed a model of infant sepsis-induced CRS in rat pups then evaluated the therapeutic potential of the phosphodiesterase (PDE) 4 inhibitor, rolipram...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28419086/low-birth-weight-is-associated-with-impaired-murine-kidney-development-and-function
#12
Christina Barnett, Oluwadara Nnoli, Wasan Abdulmahdi, Lauren Nesi, Michael Shen, Joseph A Zullo, David L Payne, Tala Azar, Parth Dwivedi, Kunzah Syed, Jonathan Gromis, Mark Lipphardt, Edson Jules, Eric L Maranda, Amy Patel, May M Rabadi, Brian B Ratliff
BackgroundLow birth weight (LBW) neonates have impaired kidney development that leaves them susceptible to kidney disease and hypertension during adulthood. The study here identifies events that blunt nephrogenesis and kidney development in the murine LBW neonate.MethodsWe examined survival, kidney development, GFR, gene expression, and cyto-/chemokines in the LBW offspring of malnourished (caloric and protein-restricted) pregnant mice.ResultsMalnourished pregnant mothers gave birth to LBW neonates that had 40% reduced body weight and 54% decreased survival...
May 31, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28407629/combining-cystatin-c-and-creatinine-yields-a-reliable-glomerular-filtration-rate-estimation-in-older-adults-in-contrast-to-%C3%AE-trace-protein-and-%C3%AE-2-microglobulin
#13
Karin Werner, Mats Pihlsgård, Sölve Elmståhl, Helen Legrand, Ulf Nyman, Anders Christensson
BACKGROUND: The glomerular filtration rate (GFR) is the most important measure of kidney function and chronic kidney disease (CKD). This study aims to validate commonly used equations for estimated GFR (eGFR) based on creatinine (cr), cystatin C (cys), β-trace protein (BTP), and β2-microglobulin (B2M) in older adults. METHOD: We conducted a validation study with 126 participants aged between 72 and 98 with a mean measured GFR (mGFR) by iohexol clearance of 54 mL/min/1...
April 14, 2017: Nephron
https://www.readbyqxmd.com/read/28385450/predictors-of-upper-tract-damage-in-pediatric-neurogenic-bladder
#14
Raghu Prakash, Archana Puri, Rama Anand, Ajay K Jain, Brahmanand Lal, Vaibhav Garg
INTRODUCTION: Upper tract damage (UTD) is a life-threatening complication of neurogenic bladder (NB). Early identification of risk factors for UTD and institution of remedial measures may probably prevent UTD. The aim was to study the predictors of UTD in children 2 years or older with NB. METHOD: This cross-sectional, observational study over 2 years included 30 children. UTD was defined as serum creatinine of >1 mg/dL or society of fetal urology grade III-IV hydronephrosis or hydroureteronephrosis on ultrasonography or renal scars on (99)(m)technetium dimercaptosuccinic scan or subnormal glomerular filtration rate (GFR) for age...
March 22, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28383392/valganciclovir-dosing-for-cytomegalovirus-prophylaxis-in-pediatric-solid-organ-transplant-recipients-a-prospective-pharmacokinetic-study
#15
Orit Peled, Matitiahu Berkovitch, Eran Rom, Efraim Bilavsky, Yael Bernfeld, Lev Dorfman, Adi Pappo, Tomer Ziv-Baran, Nurit Brandriss, Adina Bar-Haim, Jacob Amir, Liat Ashkenazi-Hoffnung
BACKGROUND: Valganciclovir is extensively used for prophylaxis and treatment of cytomegalovirus (CMV) infection in solid-organ transplant recipients. However, pharmacokinetic data in children are scarce, and the pediatric dosing regimen is uncertain. This study sought to prospectively evaluate the pharmacokinetic profile, the clinical efficacy and safety of oral valganciclovir in pediatric transplant recipients and compare different dosing regimens. METHODS: The cohort included solid-organ transplant recipients treated with valganciclovir for CMV prophylaxis in 2014-2015 at a tertiary pediatric medical center...
August 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28306525/efficient-reporting-of-the-estimated-glomerular-filtration-rate-without-height-in-pediatric-patients-with-cancer
#16
Tae-Dong Jeong, Eun-Jung Cho, Woochang Lee, Sail Chun, Ki-Sook Hong, Won-Ki Min
BACKGROUND: The updated bedside Schwartz equation requires constant, serum creatinine concentration and height measurements to calculate the estimated glomerular filtration rate (eGFR) in pediatric patients. Unlike the serum creatinine levels, obtaining height information from the laboratory information system (LIS) is not always possible in a clinical laboratory. Recently, the height-independent eGFR equation, the full age spectrum (FAS) equation, has been introduced. We evaluated the performance of height-independent eGFR equation in Korean children with cancer...
March 15, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28289595/case-report-of-a-novel-mutation-of-the-eya1-gene-in-a-patient-with-branchio-oto-renal-syndrome
#17
L Spahiu, B Merovci, V Ismaili Jaha, A Batalli Këpuska, H Jashari
Branchio-oto-renal (BOR) syndrome is an autosomal dominant disorder characterized by the coexistence of branchial cysts or fistulae, external ear malformation with pre-auricular pits or tags, hearing impairment and renal malformations. However, the presence of the main features varies in affected families. Here, we present a 16-year-old boy admitted to the Department of Nephrology at the Pediatric Clinic, University Clinical Center of Kosovo, Pristina, Republic of Kosovo because of severe renal insufficiency diagnosed 6 years ago, which progressed to end-stage renal failure...
December 1, 2016: Balkan Journal of Medical Genetics: BJMG
https://www.readbyqxmd.com/read/27997529/renal-dysfunction-in-early-adulthood-following-birth-asphyxia-in-male-spiny-mice-and-its-amelioration-by-maternal-creatine-supplementation-during-pregnancy
#18
Stacey J Ellery, Domenic A LaRosa, Luise A Cullen-McEwen, Russell D Brown, Rod J Snow, David W Walker, Michelle M Kett, Hayley Dickinson
BACKGROUND: Acute kidney injury affects ~70% of asphyxiated newborns, and increases their risk of developing chronic kidney disease later in life. Acute kidney injury is driven by renal oxygen deprivation during asphyxia, thus we hypothesized that creatine administered antenatally would protect the kidney from the long-term effects of birth asphyxia. METHODS: Pregnant spiny mice were fed standard chow or chow supplemented with 5% creatine from 20-d gestation (midgestation)...
April 2017: Pediatric Research
https://www.readbyqxmd.com/read/27878110/discontinuation-of-antimicrobial-prophylaxis-ap-in-children-with-spina-bifida-a-case-series-analysis
#19
Kevin G Couloures, Michael Anderson, Michael Machiorlatti, Olivera Marsenic, Lawrence Opas
BACKGROUND: Spina bifida increases the risk for urinary tract infections (UTI). Antimicrobial prophylaxis (AP) reduces symptomatic UTI's but selects resistant organisms. Measures to ensure regular and complete emptying of the bladder combined with treatment of constipation reduce the risk for UTI. OBJECTIVES: Demonstrate that close adherence to a catheterization regimen in children with spina bifida (Selective Treatment - ST) reduces the need for antimicrobial prophylaxis...
September 2016: Nephro-urology Monthly
https://www.readbyqxmd.com/read/27827310/cardiovascular-phenotypes-in-children-with-ckd-the-4c-study
#20
Franz Schaefer, Anke Doyon, Karolis Azukaitis, Aysun Bayazit, Nur Canpolat, Ali Duzova, Ana Niemirska, Betul Sözeri, Daniela Thurn, Ali Anarat, Bruno Ranchin, Mieczyslav Litwin, Salim Caliskan, Cengiz Candan, Esra Baskin, Ebru Yilmaz, Sevgi Mir, Marietta Kirchner, Anja Sander, Dieter Haffner, Anette Melk, Elke Wühl, Rukshana Shroff, Uwe Querfeld
BACKGROUND AND OBJECTIVES: Cardiovascular disease is the most important comorbidity affecting long-term survival in children with CKD. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: The Cardiovascular Comorbidity in Children with CKD Study is a multicenter, prospective, observational study in children ages 6-17 years old with initial GFR of 10-60 ml/min per 1.73 m(2). The cardiovascular status is monitored annually, and subclinical cardiovascular disease is assessed by noninvasive measurements of surrogate markers, including the left ventricular mass index, carotid intima-media thickness, and central pulse wave velocity...
January 6, 2017: Clinical Journal of the American Society of Nephrology: CJASN
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