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Clearance glomerular filtration rate

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https://www.readbyqxmd.com/read/28621640/clinical-and-biochemical-characteristics-of-brain-dead-donors-as-predictors-of-early-and-long-term-renal-function-after-transplant
#1
Ewa Kwiatkowska, Leszek Domański, Joanna Bober, Krzysztof Safranow, Andrzej Pawlik, Kazimierz Ciechanowski, Magda Wiśniewska, Karolina Kędzierska
OBJECTIVES: Organs from brain-dead donors are the main source of allografts for transplant. Comparisons between living-donor and brain-dead donor kidneys show that the latter are more likely to demonstrate delayed graft function and lower long-term survival. This study aimed to assess the effects of various clinical and biochemical factors of donors on early- and long-term renal function after transplant. MATERIALS AND METHODS: We analyzed data from kidney recipients treated between 2006 and 2008 who received organs from brain-dead donors...
June 16, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28613962/significant-association-between-renal-function-and-area-of-amyloid-deposition-in-kidney-biopsy-specimens-in-both-aa-amyloidosis-associated-with-rheumatoid-arthritis-and-al-amyloidosis
#2
Takeshi Kuroda, Naohito Tanabe, Eriko Hasegawa, Ayako Wakamatsu, Yukiko Nozawa, Hiroe Sato, Takeshi Nakatsue, Yoko Wada, Yumi Ito, Naofumi Imai, Mitsuhiro Ueno, Masaaki Nakano, Ichiei Narita
The kidney is a major target organ for systemic amyloidosis, which results in proteinuria and an elevated serum creatinine level. The clinical manifestations and precursor proteins of amyloid A (AA) and light-chain (AL) amyloidosis are different, and the renal damage due to amyloid deposition also seems to differ. The purpose of this study was to clarify haw the difference in clinical features between AA and AL amyloidosis are explained by the difference in the amount and distribution of amyloid deposition in the renal tissues...
June 14, 2017: Amyloid: the International Journal of Experimental and Clinical Investigation
https://www.readbyqxmd.com/read/28603840/pretransplant-4%C3%AE-hydroxycholesterol-does-not-predict-tacrolimus-exposure-or-dose-requirements-during-the-first-days-after-kidney-transplantation
#3
Thomas Vanhove, Mahmoud Hasan, Pieter Annaert, Stefan Oswald, Dirk R J Kuypers
AIMS: The CYP3A metric 4β-hydroxycholesterol (4βOHC) has been shown to correlate with tacrolimus steady-state apparent oral clearance (CL/F). Recently, pretransplant 4βOHC was shown not to predict tacrolimus CL/F after transplantation in a cohort of renal recipients (n=79). The goal of the current study was determine whether these findings could be validated in a substantially larger cohort. METHODS: In a retrospective analysis of 279 renal recipients, tacrolimus trough concentrations (C0), daily dose, haematocrit and other relevant covariates were registered every day for the first 14 days after transplantation...
June 11, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28601073/role-of-na-k-atpase-in-natriuretic-effect-of-prolactin-in-a-model-of-cholestasis-of-pregnancy
#4
P A Abramicheva, T A Balakina, O A Bulaeva, A A Guseva, O D Lopina, O V Smirnova
Participation of Na+/K+-ATPase in the natriuretic effect of prolactin in a cholestasis of pregnancy model was investigated. The Na+/K+-ATPase activity in rat kidney medulla, where active sodium reabsorption occurs, decreased in the model of cholestasis of pregnancy and other hyperprolactinemia types compared with intact animals. This effect was not connected with the protein level of α1- and β-subunits of Na+/K+-ATPase measured by Western blotting in the kidney medulla. Decrease in Na+/K+-ATPase activity in the kidney cortex was not significant, as well as decrease in the quantity of mRNA and proteins of the α1- and β-subunits of Na+/K+-ATPase...
May 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28589217/a-prospective-randomized-comparison-of-micropercutaneous-nephrolithotomy-microperc-and-retrograde-intrarenal-surgery-rirs-for-the-management-of-lower-pole-kidney-stones
#5
Abdulkadir Kandemir, Selcuk Guven, Mehmet Balasar, Mehmet Giray Sonmez, Hakan Taskapu, Recai Gurbuz
OBJECTIVE: To make a comparison between the safety and efficacy of micropercutaneous nephrolithotomy (microperc) and retrograde intrarenal surgery (RIRS) for the management of lower pole kidney stones up to 15 mm. PATIENTS AND METHODS: 60 patients presenting with solitary lower pole kidney stones up to 15 mm were included in the study between March 2013 and December 2015. Patients were randomized into Microperc or RIRS groups with computer-generated numbers. RESULTS: The mean stone size was 10...
June 6, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28588633/determination-of-renal-handling-of-marbofloxacin-in-lohi-sheep-ovis-aries-following-a-single-intravenous-administration
#6
Sh H Munawar, Z Iqbal, Z Manzoor
The objective of present study was to investigate renal clearance, urinary excretion and underlying excretory mechanism of marbofloxacin in Lohi sheep. For this purpose, marbofloxacin was administered intravenously (IV) as single bolus dose (2.5 mg/kg body weight) to eight healthy sheep of Lohi breed. After start of experiment, blood and urine samples were drawn at predetermined time intervals and marbofloxacin concentrations in the samples were measured by reverse phase high performance liquid chromatography (RP-HPLC) using UV/Vis detector...
2017: Iranian journal of veterinary research
https://www.readbyqxmd.com/read/28583518/cystatin-c-based-equation-for-predicting-the-glomerular-filtration-rate-in-kidney-transplant-recipients
#7
Y Yang, K Y Kim, I Hwang, T Yim, W Do, M J Kim, S Lee, H-Y Jung, J-Y Choi, S-H Park, Y-L Kim, C-D Kim, J-H Cho
BACKGROUND: Precise monitoring of the glomerular filtration rate (GFR) is needed to estimate the allograft function in kidney transplant recipients (KTRs). The GFR is widely estimated with the use of formulas based on serum cystatin C (SCys) and serum creatinine (SCr) levels. We compared the efficacy of SCys-based equations with that of SCr-based equations to predict the allograft function. METHODS: We calculated the Modification of Diet in Renal Disease (MDRD), Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI Cr), CKD-EPI creatinine-cystatin C (CKD-EPI Cr/Cys), and CKD-EPI cystatin C (CKD-EP ICys) equations in 70 KTRs...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28571926/urinary-sodium-excretion-after-gastric-bypass-surgery
#8
Neil G Docherty, Lars Fändriks, Carel W le Roux, Peter Hallersund, Malin Werling
BACKGROUND: Gut-kidney signaling is implicated in sodium homeostasis and thus blood pressure regulation. Roux-en-Y gastric bypass (RYGB) surgery for morbid obesity confers a pronounced and long-lasting blood pressure lowering effect in addition to significant weight loss. OBJECTIVES: We set out to establish whether RYGB is associated with an intrinsic change in urinary sodium excretion that may contribute to the reported blood pressure lowering effects of the procedure...
April 8, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28565889/renal-function-markers-and-metformin-eligibility
#9
Carlos Tavares Bello, Ricardo Castro Fonseca, Francisco Sousa Santos, João Sequeira Duarte, Jorge Azinheira, Carlos Vasconcelos
BACKGROUND: Metformin is the cornerstone of the pharmacological therapy for type 2 Diabetes (T2D). It belongs to the biguanide class of drugs and it improves hepatic insulin resistance and enhances GLP-1 and peptide YY secretion. Although being considered safe regarding hypoglycemic risk, renal dysfunction remains the main obstacle to its use due to the underlying risk of lactic acidosis. In the recent past many authors used creatinine values as the decisive marker when it came to choose between pharmacological agents in DM...
May 31, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/28555040/body-composition-analysis-allows-the-prediction-of-urinary-creatinine-excretion-and-of-renal-function-in-chronic-kidney-disease-patients
#10
Carlo Donadio
The aim of this study was to predict urinary creatinine excretion (UCr), creatinine clearance (CCr) and the glomerular filtration rate (GFR) from body composition analysis. Body cell mass (BCM) is the compartment which contains muscle mass, which is where creatinine is generated. BCM was measured with body impedance analysis in 165 chronic kidney disease (CKD) adult patients (72 women) with serum creatinine (SCr) 0.6-14.4 mg/dL. The GFR was measured ((99m)Tc-DTPA) and was predicted using the Modification of Diet in Renal Disease (MDRD) formula...
May 28, 2017: Nutrients
https://www.readbyqxmd.com/read/28546304/comparison-of-methods-of-estimating-creatinine-clearance-in-pediatric-patients
#11
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/28537660/relation-between-blood-pressure-variability-and-early-renal-damage-in-hypertensive-patients
#12
L-H Yin, W-J Yan, Z-X Guo, F-Z Zhou, H-Y Zhang
OBJECTIVE: The objective of the present study was to observe the relation between blood pressure variability (BPV) and early renal damage in hypertensive patients. PATIENTS AND METHODS: A total of 118 hypertensive patients were consecutively selected. General parameters including sex, age, duration, and grade of hypertension, antihypertensive drugs taken, smoking status, blood sugar, blood lipid level, body mass index, indexes of 24-h ambulatory blood pressure monitoring and renal function including cystatin C (CysC), serum creatinine (SCr), angiotensin II (Ang II), microalbuminuria (mALb), and urine creatinine (UCr) were measured...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28536087/workflow-sensitivity-of-post-processing-methods-in-renal-dce-mri
#13
Erik Hanson, Eli Eikefjord, Jarle Rørvik, Erling Andersen, Arvid Lundervold, Erlend Hodneland
OBJECTIVE: Estimation of renal filtration using dynamic contrast-enhanced imaging (DCE-MRI) requires a series of analysis steps. The possible number of distinct post-processing chains is large and grows rapidly with increasing number of processing steps or options. In this study we introduce a framework for systematic evaluation of the post-processing chains. The framework is later used to highlight the workflow processing chain sensitivity towards accuracy in estimation of glomerular filtration rate (GFR)...
May 20, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28534209/the-renal-safety-and-efficacy-of-combined-gemcitabine-plus-cisplatin-and-gemcitabine-plus-carboplatin-chemotherapy-in-chinese-patients-with-a-solitary-kidney-after-nephroureterectomy
#14
Peng Sun, Cong Xue, Li-Ren Li, Cui Shao, Xin An, Ried Thomas, Wei Yang, Ying-Fei Deng, Wen-Qi Jiang, Yan-Xia Shi
PURPOSE: The renal safety of cisplatin-based chemotherapy has not been investigated in patients with urothelial carcinoma of the upper urinary tract (UUT-UC) who retain a solitary kidney after nephroureterectomy. This study aimed to assess and compare the renal safety and efficacy of gemcitabine-cisplatin (GP) and gemcitabine-carboplatin (GC) in these patients. METHODS: The medical records of patients diagnosed with urothelial carcinoma at the Sun Yat-Sen University Cancer Center between January 2005 and December 2015 were retrospectively reviewed...
May 22, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28522248/adverse-effects-in-kidney-function-antioxidant-systems-and-histopathology-in-rats-receiving-monosodium-glutamate-diet
#15
María Del Carmen Contini, Ana Fabro, Néstor Millen, Adriana Benmelej, Stella Mahieu
We investigated the effects of adding of monosodium glutamate (MSG) to a standard diet on oxidative stress in kidney, nitric oxide excretion, renal ions handling and blood pressure. We examined the association of these changes with the effects on renal histology. The study was performed on male Wistar rats (5 weeks old) divided into 3 groups: 1) MSG group were fed a diet supplemented with 3g of MSG/kg b.w./day, five days a week, and spontaneous ingestion of a 1% MSG solution during 16 weeks; 2) NaCl group were fed a diet with NaCl (1g/kg b...
May 15, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
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
#16
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/28515176/acute-exercise-does-not-impair-renal-function-in-non-dialysis-chronic-kidney-disease-patients-regardless-of-disease-stage
#17
Davi Alves de Santana, Jacques R Poortmans, Egidio L Dorea, Juliana Bannwart de Andrade Machado, Alan L Fernandes, Ana Lúcia de Sá Pinto, Bruno Gualano, Hamilton Roschel
Exercise has been overlooked as a potential therapy in chronic kidney disease (CKD), mainly due to a lack of understanding on its safety aspects. Notably, there is no data on renal function after exercise in CKD considering its stages. We investigated the acute effects of a 30-minute moderate-intensity aerobic exercise bout on glomerular filtration rate (GFR) and albuminuria in twenty-two non-dialysis CKD patients divided into: CKD stages 1 and 2 (CKD1-2) and; CKD stages 3 and 4 (CKD3-4). Eleven body mass index-, age-, and sex-matched healthy individuals served as control (CON)...
May 17, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28508095/estimation-of-glomerular-filtration-rate-in-cancer-patients-with-abnormal-body-composition-and-relation-with-carboplatin-toxicity
#18
M Bretagne, A Jouinot, J P Durand, O Huillard, P Boudou Rouquette, C Tlemsani, J Arrondeau, G Sarfati, F Goldwasser, J Alexandre
PURPOSE: Carboplatin clearance is correlated with glomerular filtration rate (GFR) and usually estimated with creatinine clearance using Cockcroft-Gault (CG) formula. Because plasma creatinine level is highly correlated with muscle mass, we hypothesized that an abnormal body composition with a low lean body mass (LBM) percentage [(LBM/weight) × 100] may result in inadequate carboplatin dosing. Serum cystatin C is an alternative marker of GFR, not affected by muscle mass. We aimed to investigate the influence of total LBM and LBM percentage on GFR calculation, using creatinine (CrCl) or cystatin C (GFRcysC-creat) in cancer patients...
May 15, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28507171/first-in-man-demonstration-of-direct-endothelin-mediated-natriuresis-and-diuresis
#19
Robert W Hunter, Rebecca Moorhouse, Tariq E Farrah, Iain M MacIntyre, Takae Asai, Peter J Gallacher, Debbie Kerr, Vanessa Melville, Alicja Czopek, Emma E Morrison, Jess R Ivy, James W Dear, Matthew A Bailey, Jane Goddard, David J Webb, Neeraj Dhaun
Endothelin (ET) receptor antagonists are potentially novel therapeutic agents in chronic kidney disease and resistant hypertension, but their use is complicated by sodium and water retention. In animal studies, this side effect arises from ETB receptor blockade in the renal tubule. Previous attempts to determine whether this mechanism operates in humans have been confounded by the hemodynamic consequences of ET receptor stimulation/blockade. We aimed to determine the effects of ET signaling on salt transport in the human nephron by administering subpressor doses of the ET-1 precursor, big ET-1...
May 15, 2017: Hypertension
https://www.readbyqxmd.com/read/28505377/performance-of-glomerular-filtration-rate-estimating-equations-in-a-community-based-sample-of-blacks-and-whites-the-multiethnic-study-of-atherosclerosis
#20
Lesley A Inker, Andrew S Levey, Hocine Tighiouart, Tariq Shafi, John H Eckfeldt, Craig Johnson, Aghogho Okparavero, Wendy S Post, Josef Coresh, Michael G Shlipak
Background.: The Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equations are recommended for glomerular filtration rate (GFR) estimation in the general population. They have not been evaluated in community-based populations, including Blacks at higher levels of GFR, but are commonly applied in such populations. Methods.: In an ancillary study of Multi-Ethnic Study of Atherosclerosis conducted at one site, we evaluated the performance of the CKD-EPI equations for creatinine (eGFRcr), cystatin C (eGFRcys) or the combination (eGFRcr-cys) compared with GFR measured as plasma clearance of iohexol...
May 13, 2017: Nephrology, Dialysis, Transplantation
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