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https://www.readbyqxmd.com/read/28164498/method-comparison-and-bias-estimation-of-blood-urea-nitrogen-bun-creatinine-cr-and-uric-acid-ua-measurements-between-two-analytical-methods
#1
Anji Cai, Suwen Qi, Zhuowa Su, Yu Yang, Huaqing Shen, Tianyuan Wang, Yong Dai
BACKGROUND: A comparison of any two methods is of great importance in a clinical laboratory. In this study, our aim is to compare the assay results of blood urea nitrogen (BUN), creatinine (Cr), and uric acid (UA) obtained through two distinct methods and then assess the analytical agreement of the two methods. METHODS: A test method (Vitros5600 system) measuring BUN, Cr, and UA analytes was compared with a reference method (Hitachi7600 system). The Clinical and Laboratory Standards Institute (CLSI) document EP9-A2 guidelines were followed to evaluate the method comparison and bias using 40 patient samples...
January 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28154020/comparison-of-performance-of-improved-serum-estimators-of-gfr-to-tc-99m-dtpa-gfr-methods-in-patients-with-hepatic-cirrhosis
#2
Zaid Haddadin, Vivian Lee, Christopher Conlin, Lei Zhang, Kristi Carlston, Glen Morrell, Daniel Kim, John M Hoffman, Kathryn A Morton
RATIONALE: GFR measurements are critical in patients with hepatic cirrhosis, but potentially erroneous when based on serum creatinine. New equations for estimated GFR (eGFR) have shown variable performance in cirrhotics, possibly due to inaccuracies in reference methods for measured GFR (mGFR). The primary objective was to compare the performance of 4 improved eGFR equations to a 1-compartment, 2-sample plasma slope intercept (99m)Tc-DTPA mGFR method to determine whether any of the eGFR calculations could replace plasma (99m)Tc-DTPA mGFR in patients with cirrhosis...
February 2, 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/28087576/circulating-modified-metabolites-and-a-risk-of-esrd-in-patients-with-type-1-diabetes-and-chronic-kidney-disease
#3
Monika A Niewczas, Anna V Mathew, Stephanie Croall, Jaeman Byun, Melissa Major, Venkatta S Sabisetti, Adam Smiles, Joseph V Bonventre, Subramaniam Pennathur, Andrzej S Krolewski
OBJECTIVE: Patients with type 1 diabetes (T1D) with impaired renal function are at increased risk for end-stage renal disease (ESRD). Although the rate of progression varies, determinants and mechanisms of this variation are unknown. RESEARCH DESIGN AND METHODS: We examined serum metabolomic profiles associated with variation in renal function decline in participants with T1D (the Joslin Kidney Study prospective cohort). One hundred fifty-eight patients with proteinuria and chronic kidney disease stage 3 were followed for a median of 11 years to determine estimated glomerular filtration rate slopes from serial measurements of serum creatinine and to ascertain time to onset of ESRD...
January 13, 2017: Diabetes Care
https://www.readbyqxmd.com/read/27998909/association-of-circulating-biomarkers-adrenomedullin-tnfr1-and-nt-probnp-with-renal-function-decline-in-patients-with-type-2-diabetes-a-french-prospective-cohort
#4
Pierre-Jean Saulnier, Elise Gand, Gilberto Velho, Kamel Mohammedi, Philippe Zaoui, Mathilde Fraty, Jean Michel Halimi, Ronan Roussel, Stéphanie Ragot, Samy Hadjadj
OBJECTIVE: We explored the prognostic value of three circulating candidate biomarkers-midregional-proadrenomedullin (MR-proADM), soluble tumor necrosis factor receptor 1 (sTNFR1), and N-terminal prohormone brain natriuretic peptide (NT-proBNP)-for change in renal function in patients with type 2 diabetes. RESEARCH DESIGN AND METHODS: Outcomes were defined as renal function loss (RFL), ≥40% decline of estimated glomerular filtration rate (eGFR) from baseline, and rapid renal function decline (RRFD), absolute annual eGFR slope <-5 mL/min/year...
December 20, 2016: Diabetes Care
https://www.readbyqxmd.com/read/27986873/long-term-cortisol-measures-predict-alzheimer-disease-risk
#5
Gilda E Ennis, Yang An, Susan M Resnick, Luigi Ferrucci, Richard J O'Brien, Scott D Moffat
OBJECTIVE: To examine whether long-term measures of cortisol predict Alzheimer disease (AD) risk. METHOD: We used a prospective longitudinal design to examine whether cortisol dysregulation was related to AD risk. Participants were from the Baltimore Longitudinal Study of Aging (BLSA) and submitted multiple 24-hour urine samples over an average interval of 10.56 years. Urinary free cortisol (UFC) and creatinine (Cr) were measured, and a UFC/Cr ratio was calculated to standardize UFC...
January 24, 2017: Neurology
https://www.readbyqxmd.com/read/27943221/a-population-pharmacokinetic-model-for-51-cr-edta-to-estimate-renal-function
#6
Isabelle H S Kuan, Stephen B Duffull, Tracey L Putt, John B W Schollum, Robert J Walker, Daniel F B Wright
BACKGROUND AND OBJECTIVES: (51)Cr EDTA clearance (CL) from plasma is used to estimate glomerular filtration rate (GFR). We propose that current methods for analysing the raw (51)Cr EDTA measurements over-simplifies the disposition of (51)Cr EDTA and therefore could produce biased GFR estimates. The aim of this study was to develop a population pharmacokinetic model for (51)Cr EDTA disposition and to compare model-predicted GFR to other methods of estimating renal function. PATIENTS AND METHODS: Data from 40 individuals who received ~7...
December 9, 2016: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/27906832/clinical-validation-of-simultaneous-analysis-of-tacrolimus-cyclosporine-a-and-creatinine-in-dried-blood-spots-in-kidney-transplant-patients
#7
Herman Veenhof, Remco A Koster, Jan-Willem C Alffenaar, Stefan P Berger, Stephan J L Bakker, Daan J Touw
BACKROUND: Monitoring of creatinine and immunosuppressive drug concentrations such as tacrolimus (TaC) and cyclosporin A (CsA) is important in the outpatient follow-up of kidney transplant recipients. Monitoring by Dried Blood Spot (DBS) provides patients the opportunity to sample a drop of blood from a fingerprick at home, which can be send to the laboratory by mail. METHODS: We performed a clinical validation in which we compared measurements from whole blood samples obtained by venapuncture with measurements from DBS samples simultaneously obtained by fingerprick...
December 1, 2016: Transplantation
https://www.readbyqxmd.com/read/27821404/long-term-visit-to-visit-blood-pressure-variability-and-renal-function-decline-in-patients-with-hypertension-over-15%C3%A2-years
#8
Yook Chin Chia, Hooi Min Lim, Siew Mooi Ching
BACKGROUND: Visit-to-visit variability of systolic blood pressure (SBP) has been shown to contribute to cardiovascular events and all-cause mortality. However, little is known about its long-term effect on renal function. We aim to examine the relationship between visit-to-visit blood pressure variability (BPV) and decline in renal function in patients with hypertension and to determine the level of systolic BPV that is associated with significant renal function decline. METHODS AND RESULTS: This is a 15-year retrospective cohort study of 825 hypertensive patients...
November 7, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27812147/left-atrial-structure-and-function-in-heart-failure-with-preserved-ejection-fraction-a-relax-substudy
#9
Siddique A Abbasi, Ravi V Shah, Steven E McNulty, Adrian F Hernandez, Marc J Semigran, Gregory D Lewis, Michael Jerosch-Herold, Raymond J Kim, Margaret M Redfield, Raymond Y Kwong
Given the emerging recognition of left atrial structure and function as an important marker of disease in heart failure with preserved ejection fraction (HF-pEF), we investigated the association between left atrial volume and function with markers of disease severity and cardiac structure in HF-pEF. We studied 100 patients enrolled in the PhosphdiesteRasE-5 Inhibition to Improve CLinical Status and EXercise Capacity in Diastolic Heart Failure (RELAX) trial who underwent cardiac magnetic resonance (CMR), cardiopulmonary exercise testing, and blood collection before randomization...
2016: PloS One
https://www.readbyqxmd.com/read/27796539/a-phase-i-pharmacokinetic-and-safety-study-of-cabazitaxel-in-adult-cancer-patients-with-normal-and-impaired-renal-function
#10
Analía Azaro, Jordi Rodón, Jean-Pascal Machiels, Sylvie Rottey, Silvia Damian, Richard Baird, Javier Garcia-Corbacho, Ron H J Mathijssen, Pierre-François Clot, Claudine Wack, Liji Shen, Maja J A de Jonge
PURPOSE: Limited data are available on cabazitaxel pharmacokinetics in patients with renal impairment. This open-label, multicenter study assessed cabazitaxel in patients with advanced solid tumors and normal or impaired renal function. METHODS: Cohorts A (normal renal function: creatinine clearance [CrCL] >80 mL/min/1.73 m(2)), B (moderate renal impairment: CrCL 30 to <50 mL/min/1.73 m(2)) and C (severe impairment: CrCL <30 mL/min/1.73 m(2)) received cabazitaxel 25 mg/m(2) (A, B) or 20 mg/m(2) (C, could be escalated to 25 mg/m(2)), once every 3 weeks...
December 2016: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/27764832/attenuation-of-renal-functional-decline-following-angioplasty-and-stenting-in-atherosclerotic-renovascular-disease
#11
Rodrigo Hagemann, Vanessa Dos Santos Silva, Fábio Cardoso Carvalho, Pasqual Barretti, Luis Cuadrado Martin, Diana Vassallo, Philip A Kalra, Roberto Jorge da Silva Franco
BACKGROUND: To date, renal revascularization has not been shown to be advantageous when compared to optimized medical treatment in patients with atheromatous renovascular disease (ARVD). This study aims to investigate the effect of revascularization in patients with pre-intervention worsening renal function and in those with stable renal function. PATIENTS AND METHODS: In this single-centre observational study, patients who were diagnosed with at least 60% angiographic stenosis unilaterally or bilaterally between January 1996 and October 2008 and who were followed-up until February 2011 were retrospectively analysed...
2017: Nephron
https://www.readbyqxmd.com/read/27754262/os-37-05-long-term-visit-to-visit-variability-of-systolic-blood-pressure-and-decline-in-renal-function-in-hypertensive-patients-over-15-years
#12
Hooi Min Lim, Yook Chin Chia, Siew Mooi Ching
OBJECTIVE: We aim to examine the relationship between visit-to-visit systolic blood pressure variability (BPV) and decline in renal function in patients with hypertension and determine the level of systolic BPV that contribute to significant renal function decline. DESIGN AND METHOD: This is a 15-year (1998-2012) retrospective cohort study of 825 hypertensive patients with normal renal function at baseline in a primary care clinic. Three monthly blood pressure readings per year were retrieved from the 15 years of clinic visits...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27752336/reduction-in-erythrocyte-bound-complement-activation-products-and-titres-of-anti-c1q-antibodies-associate-with-clinical-improvement-in-systemic-lupus-erythematosus
#13
Jill Buyon, Richard Furie, Chaim Putterman, Rosalind Ramsey-Goldman, Kenneth Kalunian, Derren Barken, John Conklin, Thierry Dervieux
BACKGROUND: The relationship between cell-bound complement activation products (CB-CAPs: EC4d, EC3d), anti-C1q, soluble complement C3/C4 and disease activity in systemic lupus erythematosus (SLE) was evaluated. METHODS: Per protocol, at baseline all SLE subjects enrolled in this longitudinal study presented with active disease and elevated CB-CAPs. At each monthly visit, the non-serological (ns) Safety of Estrogens in Lupus Erythematosus: National Assessment (SELENA-SLEDAI) and the British Isles Lupus Assessment Group (BILAG)-2004 index scores were determined as was a random urinary protein to creatinine ratio (uPCR)...
2016: Lupus Science & Medicine
https://www.readbyqxmd.com/read/27704256/achieving-remission-of-proteinuria-in-childhood-ckd
#14
Piero Ruggenenti, Paolo Cravedi, Antonietta Chianca, MariaRosa Caruso, Giuseppe Remuzzi
BACKGROUND: A multidrug treatment strategy that targets urinary proteins with an angiotensin-converting enzyme (ACE) inhibitor and angiotensin receptor blocker (ARB) up-titrated to the respective maximum tolerated dose combined with intensified blood pressure (BP) control has been found to prevent renal function loss in adults with proteinuric nephropathies. Herein, we investigated the effects of this treatment protocol in the pediatric patient population. METHODS: From May 2002 to September 2014 we included in this observational, longitudinal, cohort study 20 consecutive children with chronic nephropathies and 24-h proteinuria of >200 mg who had received ramipril and losartan up-titrated to the respective maximum approved and tolerated doses [mean (standard deviation) dose:2...
February 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/27667471/the-assessment-of-risk-in-cardiothoracic-intensive-care-arctic-prediction-of-hospital-mortality-after-admission-to-cardiothoracic-critical-care
#15
J Shahin, P Ferrando-Vivas, G S Power, S Biswas, S T Webb, K M Rowan, D A Harrison
The models used to predict outcome after adult general critical care may not be applicable to cardiothoracic critical care. Therefore, we analysed data from the Case Mix Programme to identify variables associated with hospital mortality after admission to cardiothoracic critical care units and to develop a risk-prediction model. We derived predictive models for hospital mortality from variables measured in 17,002 patients within 24 h of admission to five cardiothoracic critical care units. The final model included 10 variables: creatinine; white blood count; mean arterial blood pressure; functional dependency; platelet count; arterial pH; age; Glasgow Coma Score; arterial lactate; and route of admission...
December 2016: Anaesthesia
https://www.readbyqxmd.com/read/27647852/patterns-of-estimated-glomerular-filtration-rate-decline-leading-to-end-stage-renal-disease-in-type-1-diabetes
#16
Jan Skupien, James H Warram, Adam M Smiles, Robert C Stanton, Andrzej S Krolewski
OBJECTIVE: The patterns of estimated glomerular filtration rate (eGFR) decline to end-stage renal disease (ESRD) in patients with type 1 diabetes has not been conclusively described. Decline could be linearly progressive to ESRD but with a variable rate. Conversely, decline may be linear but interrupted by periods of plateaus or improvements. RESEARCH DESIGN AND METHODS: This observational study included 364 patients with type 1 diabetes attending the Joslin Clinic who developed ESRD between 1991 and 2013...
December 2016: Diabetes Care
https://www.readbyqxmd.com/read/27643227/os-37-05-long-term-visit-to-visit-variability-of-systolic-blood-pressure-and-decline-in-renal-function-in-hypertensive-patients-over-15-years
#17
Hooi Min Lim, Yook Chin Chia, Siew Mooi Ching
OBJECTIVE: We aim to examine the relationship between visit-to-visit systolic blood pressure variability (BPV) and decline in renal function in patients with hypertension and determine the level of systolic BPV that contribute to significant renal function decline. DESIGN AND METHOD: This is a 15-year (1998-2012) retrospective cohort study of 825 hypertensive patients with normal renal function at baseline in a primary care clinic. Three monthly blood pressure readings per year were retrieved from the 15 years of clinic visits...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27640068/urinary-bisphenol-a-is-associated-with-dysregulation-of-hpa-axis-function-in-pregnant-women-findings-from-the-apron-cohort-study
#18
Gerald F Giesbrecht, Jiaying Liu, Maede Ejaredar, Deborah Dewey, Nicole Letourneau, Tavis Campbell, Jonathan W Martin
BACKGROUND: Bisphenol A (BPA) is associated with dysregulation of hypothalamic-pituitary-adrenal (HPA) axis activity in rodents, but evidence in humans is lacking. OBJECTIVE: To determine whether BPA exposure during pregnancy is associated with dysregulation of the HPA-axis, we examined the association between urinary BPA concentrations and diurnal salivary cortisol in pregnant women. Secondary analyses investigated whether the association between BPA and cortisol was dependent on fetal sex...
September 15, 2016: Environmental Research
https://www.readbyqxmd.com/read/27593903/comparing-the-gfr-estimation-equations-using-both-creatinine-and-cystatin-c-to-predict-the-long-term-renal-outcome-in-type-2-diabetic-nephropathy-patients
#19
Yu Pan, Song Jiang, Dandan Qiu, Jingsong Shi, Minlin Zhou, Yu An, Yongchun Ge, Honglang Xie, Zhihong Liu
AIMS: This study aimed to determine whether eGFRcre-cys and its slope could improve the prediction of the long-term renal outcome in patients with type 2 diabetic nephropathy (DN). METHODS: The cross-sectional and longitudinal analyses included 501 type 2DN patients from 2003 to 2009. GFR was estimated using either eGFRcre-cys or the serum creatinine-based equation (eGFRcre) or the cystatin C-based equation (eGFRcys), and was classified into 3 categories (≥90, 60-90, ≤60ml/min per 1...
November 2016: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/27496425/human-pooled-immunoglobulin-as-treatment-of-active-antibody-mediated-rejection-of-transplanted-kidney
#20
A Furmańczyk-Zawiska, A Urbanowicz, A Perkowska-Ptasińska, T Bączkowska, A Sadowska, S Nazarewski, A Chmura, M Durlik
BACKGROUND: Antibody-mediated rejection (ABMR) has emerged as the leading cause of renal graft loss. The optimal treatment protocol in ABMR remains unknown. This study aimed to assess the efficacy of intravenous immunoglobulin (IVIG) for treatment of ABMR in renal recipients. METHODS: Thirty-nine ABO-compatible cross-match-negative renal recipients with biopsy-proven ABMR composed the study group. Pulses of methylprednisolone (MP) and appropriate enhancement of net state of immunosuppression were applied in all individuals; 17/39 recipients were administered IVIG (IVIG group); the remaining 22/39 patients, identified to be nonadherent or unsatisfactorily immunosuppressed, were kept on the initial treatment (MP group)...
June 2016: Transplantation Proceedings
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