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https://www.readbyqxmd.com/read/29775443/-b-type-natriuretic-peptide-as-a-marker-of-cardiac-dysfunction-in-children-with-chronic-kidney-disease
#1
Tomasz Drożdż, Przemko Kwinta, Zbigniew Kordon, Krystyna Sztefko, Andrzej Rudziński, Katarzyna Zachwieja, Monika Miklaszewska, Danuta Czarnecka, Dorota Drożdż
Left ventricular hypertrophy is the most common organ damage in children with chronic kidney disease (CKD). AIM: The aim of the study was to assess the usefulness of B-type natriuretic peptide (BNP) as a marker of heart injury in children with CKD. MATERIALS AND METHODS: We included 66 children (41 boys and 25 girls) aged 0.7 to 18.6 (median 11.6) years with CKD stage 1-5. The concentrations of urea, creatinine, cystatin C and BNP in blood serum were assessed, and the estimated glomerular filtration rate (eGFR) was calculated from the Schwartz and Filler formulas...
April 23, 2018: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29774462/combining-gfr-estimates-from-cystatin-c-and-creatinine-what-is-the-optimal-mix
#2
Emil den Bakker, Reinoud Gemke, Joanna A E van Wijk, Isabelle Hubeek, Birgit Stoffel-Wagner, Arend Bökenkamp
BACKGROUND: Combining estimated glomerular filtration rate (eGFR) equations based on creatinine and cystatin C has been shown to improve the accuracy of GFR estimation. This study aims to optimize this strategy for height-independent GFR estimation in children. METHODS: Retrospective study of 408 inulin clearance tests with simultaneous International Federation of Clinical Chemistry-calibrated measurements of creatinine, cystatin C, and urea in children (mean age 12...
May 17, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29749989/first-report-on-the-percentiles-of-the-glomerular-filtration-rate-in-iranian-children-using-the-2009-schwartz-equations
#3
Peyman Roomizadeh, Alaleh Gheissari, Roya Kelishadi, Farhad Mahmoudi, Amin Abedini
The glomerular filtration rate (GFR) is widely considered the best overall index of renal function. The Schwartz equations are designed for measuring the GFR in children between 1 and 16 years of age. In the present study, we investigated the percentiles of the GFR in a general population of Iranian children with no known renal disease via the 2009 Schwartz equations (updated and combined equations). Between 2010 and 2011, we selected 687 children aged 7-16 years from the Iranian province of Isfahan. Blood samples were analyzed for blood urea nitrogen, creatinine, and cystatin C...
March 2018: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29735307/combination-of-pediatric-and-adult-formulas-yield-valid-glomerular-filtration-rate-estimates-in-young-adults-with-a-history-of-pediatric-chronic-kidney-disease
#4
Derek K Ng, George J Schwartz, Michael F Schneider, Susan L Furth, Bradley A Warady
As patients with chronic kidney disease (CKD) transition from pediatric nephrology care to adult care, their kidney function is clinically assessed by estimated glomerular filtration rate (eGFR) using both pediatric and adult equations, which may not be congruent. Here we evaluated commonly used eGFR equations and directly measured iohexol GFR (iGFR) among participants between ages 18 and 26 with a diagnosis of pediatric CKD in the Chronic Kidney Disease in Children (CKiD) cohort. The bedside serum creatinine (SCr)-only equation (CKiDSCr ), the SCr-only CKD-EPI (CKD-EPISCr ), the cystatin C (Cys)-only CKD-EPI (CKD-EPICys ) and the combined SCr and Cys CKD-EPI (CKD-EPISCr-Cys ) were compared with a) 279 measured iGFRs obtained from 187 participants and b) 548 eGFRs from the SCr and Cys-based CKiD equation (CKiDSCr-Cys ) obtained from 219 participants...
May 5, 2018: Kidney International
https://www.readbyqxmd.com/read/29681697/estimation-of-renal-functional-reserve-in-children-with-different-grades-of-vesicoureteric-reflux
#5
Rafey Abdul Rahman, Veereshwar Bhatnagar, Sandeep Agarwala, Rakesh Kumar
Background: Vesicoureteric reflux (VUR) is one of the most common anomalies encountered in pediatric urology. The concept of renal functional reserve (RFR) as the ability of the kidney to increase glomerular filtration rate (GFR) following a protein load was introduced in the 1980s. Aim: This study aims to evaluate RFR using 99 Tc diethylenetriamine pentaacetic acid (DTPA) as the filtration agent for GFR estimation in children with VUR. Materials and Methods: RFR was estimated in 53 children, of which 31 patients had unilateral VUR (Group I) and 22 patients had bilateral VUR (Group II), by subtracting baseline GFR from stimulated GFR following an intravenous protein load...
April 2018: Journal of Indian Association of Pediatric Surgeons
https://www.readbyqxmd.com/read/29619157/glomerular-hyperfiltration-as-predictor-of-cardiometabolic-risk-factors-among-children-and-adolescents-the-childhood-and-adolescence-surveillance-and-prevention-of-adult-v-study
#6
Roya Kelishadi, Mostafa Qorbani, Farahnak Assadi, Mohammad Esmaeil Motlagh, Shirin Djalalinia, Ali Shahsavari, Hasan Ziaodini, Majzoubeh Taheri, Gita Shafiee, Azadeh Aminianfar, Sajjad Esmaeili, Tahereh Aminaei, Morteza Mansourian, Ramin Heshmat
Background: The prevalence of glomerular hyperfiltration and chronic kidney disease is increasing worldwide in parallel with obesity hypertension epidemic. The effect of increases in glomerular filtrations (GFR) in children with metabolic syndrome has not been studied. The purpose of the present study is to investigate the relationship between GFR and cardiometabolic risk factors in a large sample of pediatric population. Methods: In this nationwide survey, 3800 participants were selected by cluster random sampling from 30 provinces in Iran...
2018: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29578924/sickle-cell-disease-is-associated-with-elevated-levels-of-skin-advanced-glycation-endproducts
#7
Liladhar Kashyap, Abdulhameed Alsaheel, Megan Ranck, Renee Gardner, John Maynard, Stuart A Chalew
Sickle cell disease (SCD) is associated with increased oxidative stress which potentially enhances generation of advanced glycation endproducts (AGEs). We estimated skin accumulation of AGEs in SCD patients and assessed their relationship with hemolysis and nephropathy. Skin intrinsic fluorescence (SIF), an estimate of AGEs, was assessed in African American patients with and without SCD. After skin excitation with light at 375, 405, and 420 nm, raw autofluorescence was adjusted using specific intrinsic corrections...
May 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29499888/alternatives-for-the-bedside-schwartz-equation-to-estimate-glomerular-filtration-rate-in-children
#8
REVIEW
Hans Pottel, Laurence Dubourg, Karolien Goffin, Pierre Delanaye
The bedside Schwartz equation has long been and still is the recommended equation to estimate glomerular filtration rate (GFR) in children. However, this equation is probably best suited to estimate GFR in children with chronic kidney disease (reduced GFR) but is not optimal for children with GFR >75 mL/min/1.73 m2 . Moreover, the Schwartz equation requires the height of the child, information that is usually not available in the clinical laboratory. This makes automatic reporting of estimated glomerular filtration rate (eGFR) along with serum creatinine impossible...
January 2018: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/29492066/comparison-of-three-formulae-for-estimation-of-glomerular-filtration-rate-in-severely-malnourished-children-at-tertiary-care-facility
#9
Misbah Anjum, Khemchand N Moorani, Bilquis Naeem, Shazia Kulsoom, Ashfaq Ahmed Memon
Objectives: First objective was to compare eGFR by Updated Schwartz (US) and Simple Height Independent (SHID) formula with Original Schwartz (OS) in children with Severe Acute Malnutrition (SAM). The second objective was to compare eGFR in children below and above two years. Methods: This analytic study on estimation of GFR was based on retrospective data collected from 78 children with SAM at Nutritional Rehabilitation Unit from October 2014 - March 2015. Glomerular filtration rate was calculated using serum creatinine (S...
November 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29484708/comparing-different-estimated-glomerular-filtration-rate-equations-in-assessing-glomerular-function-in-children-based-on-creatinine-and-cystatin-c
#10
Seçil Conkar, Sevgi Mir, Fatma Nur Karaslan, Gülden Hakverdi
BACKGROUND: Glomerular filtration rate (GFR) is the best marker used to assess renal function. Estimated GFR (eGFR) equations have been developed, and the ideal formula is still under discussion. We wanted to find the most practical and reliable GFR in eGFR formulas. We compared serum creatinine (Scr)- and cystatin C (cysC)-based eGFR formulas in the literature. We also aimed to determine the suitability and the reliability of cysC for practical use in determining GFR in children. METHODS: We have enrolled 238 children in the study...
February 27, 2018: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/29445029/pantoprazole-an-inhibitor-of-the-organic-cation-transporter-2-does-not-ameliorate-cisplatin-related-ototoxicity-or-nephrotoxicity-in-children-and-adolescents-with-newly-diagnosed-osteosarcoma-treated-with-methotrexate-doxorubicin-and-cisplatin
#11
Elizabeth Fox, Kristin Levin, Yan Zhu, Blair Segers, Naomi Balamuth, Richard Womer, Rochelle Bagatell, Frank Balis
LESSONS LEARNED: Using a randomized crossover design and continuous variables such as change in hearing threshold and biomarkers of acute renal injury as short-term endpoints, it was determined that pantoprazole, an organic cation transporter 2 inhibitor, did not ameliorate cisplatin-associated nephrotoxicity or ototoxicity.Cystatin C is a robust method to estimate glomerular filtration rate in patients with cancer. Using a patient-reported outcome survey, all patients identified tinnitus and subjective hearing loss occurring "at least rarely" after cycle 1, prior to objective high-frequency hearing loss measured by audiograms...
February 14, 2018: Oncologist
https://www.readbyqxmd.com/read/29401562/evaluation-of-the-1b-equation-to-estimate-glomerular-filtration-rate-in-pediatric-patients-with-cancer
#12
Tae Dong Jeong, Jaeryuk Kim, Woochang Lee, Sail Chun, Ki Sook Hong, Won Ki Min
The 1B equation is recommended for calculating the glomerular filtration rate (GFR) in children. Since few reports have evaluated the performance of the 1B equation, we investigated the performance of estimated GFR (eGFR) equations with the blood urea nitrogen (BUN) variable for pediatric cancer patients. In total, 203 children with cancer who underwent measured GFR (mGFR) assessment were enrolled. The median (range) mGFR and eGFR calculated using the updated Schwartz equation were 118 (43-241) and 135 (34-257) mL/min/1...
May 2018: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/29388463/endogenous-markers-for-kidney-function-in-children-a-review
#13
Emil den Bakker, Reinoud J B J Gemke, Arend Bökenkamp
Although glomerular filtration rate (GFR) in children can be measured using a gold-standard technique following injection of an exogenous marker, this invasive and cumbersome technique is not widely available and GFR is commonly estimated using serum levels of endogenous markers. Creatinine, urea, cystatin C, beta-trace protein, and beta-2 microglobulin are well-established endogenous markers of kidney function. These markers differ in site of production and effects of diet and medication, as well as renal-tubular handling and extra-renal elimination...
May 2018: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/29372471/validation-of-estimated-glomerular-filtration-rate-equations-for-japanese-children
#14
Yoshimitsu Gotoh, Osamu Uemura, Kenji Ishikura, Tomoyuki Sakai, Yuko Hamasaki, Yoshinori Araki, Riku Hamda, Masataka Honda
BACKGROUND: The gold standard for evaluation of kidney function is renal inulin clearance (Cin). However, the methodology for Cin is complicated and difficult, especially for younger children and/or patients with bladder dysfunction. Therefore, we developed a simple and easier method for obtaining the estimated glomerular filtration rate (eGFR) using equations and values for several biomarkers, i.e., serum creatinine (Cr), serum cystatin C (cystC), serum beta-2 microglobulin (β2 MG), and creatinine clearance (Ccr)...
January 25, 2018: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/29333146/cystatin-c-is-indispensable-for-evaluation-of-kidney-disease
#15
Anders Grubb
The present minireview of the place of cystatin C in clinical medicine emphasizes, and discuss the evidence, that cystatin C-based GFR-estimating equations do not require the use of vague terms like race and sex, that cystatin C-based GFR-esti mating equations are useful for both children and adults, including the elderly, that the best GFR-estimation requires simultaneous use of both cystatin C- and creatinine-based equations, that cystatin C-based GFR-estimating equations are superior to creatinine-based equations in predicting end-stage renal disease, cardiovascular manifestations, hospitalisation and death, and, finally that cystatin C is required to diagnose the new syndrome "Shrunken Pore Syndrome" with its high mortality and morbidity, even in the absence of reduced GFR...
December 2017: EJIFCC
https://www.readbyqxmd.com/read/29333144/did-creatinine-standardization-give-benefits-to-the-evaluation-of-glomerular-filtration-rate
#16
Laurence Piéroni, Anne-Sophie Bargnoux, Jean-Paul Cristol, Etienne Cavalier, Pierre Delanaye
During the last decade, a lot of efforts has been made to improve the evaluation of renal functions. Measured Glomerular Filtration Rate (GFR) remains the only valuable test to confirm or confute the status of chronic kidney disease (CKD) and is recommended by Kidney Disease Global Outcomes guidelines when estimation of GFR is not reliable. However, in routine clinical practice, serum creatinine remains the one of the most prescribed biological parameters and is an undeniable factor, alone or in association with other parameters, of the estimation of GFR...
December 2017: EJIFCC
https://www.readbyqxmd.com/read/29240010/well-preserved-renal-function-in-children-with-untreated-chronic-liver-disease
#17
Ulla B Berg, Antal Németh
OBJECTIVES: On the basis of studies with hepatorenal syndrome, it is widely regarded that renal function is impacted in chronic liver disease (CLD). Therefore, we investigated renal function in children with CLD. METHODS: In a retrospective study of 277 children with CLD, renal function was investigated as glomerular filtration rate (GFR) and effective renal plasma flow (ERPF), measured as clearance of inulin and para-amino hippuric acid or clearance of iohexol...
April 2018: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/29229165/measurement-and-estimation-of-glomerular-filtration-rate-in-children
#18
REVIEW
Ayesa N Mian, George J Schwartz
Rapid, accurate, and precise measures of kidney function are essential for daily management of patients. While plasma and urinary clearances provide the greatest accuracy for assessing glomerular filtration rate (GFR), these are often impractical particularly for the care of children. Serum creatinine, the most commonly used endogenous marker, is simple, convenient, and practical but less accurate because of the influence of non-GFR determinants such as muscle mass, which increases with age in children. GFR estimating equations have been developed for adults and children to improve the accuracy of endogenous biomarkers, such as creatinine and cystatin C, by accounting for some of the non-GFR determinants, thus enhancing the practitioner's ability to assess GFR...
November 2017: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/29209836/accuracy-of-cystatin-c-for-the-detection-of-abnormal-renal-function-in-children-undergoing-chemotherapy-for-malignancy-a-systematic-review-using-individual-patient-data
#19
Penny Whiting, Kate Birnie, Jonathan A C Sterne, Catherine Jameson, Rod Skinner, Bob Phillips
PURPOSE: We conducted a systematic review and individual patient data (IPD) meta-analysis to examine the utility of cystatin C for evaluation of glomerular function in children with cancer. METHODS: Eligible studies evaluated the accuracy of cystatin C for detecting poor renal function in children undergoing chemotherapy. Study quality was assessed using QUADAS-2. Authors of four studies shared IPD. We calculated the correlation between log cystatin C and GFR stratified by study and measure of cystatin C...
December 6, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29134449/iohexol-plasma-clearance-in-children-validation-of-multiple-formulas-and-single-point-sampling-times
#20
Camilla Tøndel, Cathrin Lytomt Salvador, Karl Ove Hufthammer, Bjørn Bolann, Damien Brackman, Anna Bjerre, Einar Svarstad, Atle Brun
BACKGROUND: The non-ionic agent iohexol is increasingly used as the marker of choice for glomerular filtration rate (GFR) measurement. Estimates of GFR in children have low accuracy and limiting the number of blood-draws in this patient population is especially relevant. We have performed a study to evaluate different formulas for calculating measured GFR based on plasma iohexol clearance with blood sampling at only one time point (GFR1p) and to determine the optimal sampling time point...
April 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
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