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Creatinine clearance measurement

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https://www.readbyqxmd.com/read/28642453/cystatin-c-based-equation-does-not-accurately-estimate-the-glomerular-filtration-in-japanese-living-kidney-donors
#1
Kazuma Tsujimura, Morihito Ota, Kiyoshi Chinen, Takayuki Adachi, Kiyomitsu Nagayama, Masato Oroku, Morikuni Nishihira, Yoshiki Shiohira, Kunitoshi Iseki, Hideki Ishida, Kazunari Tanabe
BACKGROUND Precise evaluation of a living donor's renal function is necessary to ensure adequate residual kidney function after donor nephrectomy. Our aim was to evaluate the feasibility of estimating glomerular filtration rate (GFR) using serum cystatin-C prior to kidney transplantation. MATERIAL AND METHODS Using the equations of the Japanese Society of Nephrology, we calculated the GFR using serum creatinine (eGFRcre) and cystatin C levels (eGFRcys) for 83 living kidney donors evaluated between March 2010 and March 2016...
June 23, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28632750/renal-sodium-handling-and-blood-pressure-changes-in-gestational-protein-restricted-offspring-role-of-renal-nerves-and-ganglia-neurokinin-expression
#2
Augusto H Custódio, Marcelo C de Lima, Bárbara Vaccari, Patrícia A Boer, José A R Gontijo
BACKGROUND: Considering long-term changes in renal sodium handling and blood pressure in maternal protein-restricted (LP) offspring, we assumed that the development of LP hypertension results from abnormal dorsal root ganglia (DRG) neurokinin expression associated with impaired responsiveness of renal sensory receptors, promoting a reduced urinary excretion of sodium. The present study investigates whether increased blood pressure in protein-restricted offspring would be associated with changes in the DRG cells and in renal pelvic wall expression of NK1R, SP and CGRP when compared to NP offspring...
2017: PloS One
https://www.readbyqxmd.com/read/28623849/population-pharmacokinetics-pharmacodynamics-of-3-4-diaminopyridine-free-base-in-patients-with-lambert-eaton-myasthenia
#3
Nilay Thakkar, Jeffrey T Guptill, Kathy Aleš, David Jacobus, Laura Jacobus, Charles Peloquin, Michael Cohen-Wolkowiez, Daniel Gonzalez
Lambert-Eaton Myasthenia (LEM) is a rare autoimmune disorder associated with debilitating muscle weakness. There are limited treatment options and 3,4-diaminopyridine free base (3,4-DAP) is an investigational orphan drug used to treat LEM-related weakness. We performed a population PK/PD analysis using 3,4-DAP and metabolite concentrations collected from a phase 2 study in LEM patients. The Triple Timed Up & Go (3TUG) assessment, which measures lower extremity weakness, was the primary outcome measure. A total of 1270 PK samples (49 patients) and 1091 3TUG data points (32 randomized patients) were included in the PK/PD analysis...
June 17, 2017: CPT: Pharmacometrics & Systems 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/28595205/the-relationship-between-serum-lipid-parameters-and-renal-frame-count-in-hypertensive-patients-with-normal-renal-functions
#5
Emrah İpek, Mustafa Yolcu, Erkan Yıldırım
OBJECTIVE: Atherosclerosis can contribute to renovascular disease, and high cholesterol level is an independent risk factor for disease progression. Renal frame count (RFC) is an objective angiographic method of measuring macrovascular blood flow in the main renal artery and its segmental branches. The aim of the present study was to demonstrate relationship between serum lipid parameters and RFC. METHODS: In this cross-sectional study, 116 hypertensive patients were allocated into 2 groups according to serum low-density lipoprotein (LDL) levels...
June 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28591008/plasma-resuscitation-improved-survival-in-a-cecal-ligation-and-puncture-rat-model-of-sepsis
#6
Ronald Chang, John B Holcomb, Par I Johansson, Shibani Pati, Martin A Schreiber, Charles E Wade
BACKGROUND: The paradigm shift from crystalloid to plasma resuscitation of traumatic hemorrhagic shock has improved patient outcomes due in part to plasma-mediated reversal of catecholamine and inflammation-induced endothelial injury, decreasing vascular permeability and attenuating organ injury. Since sepsis induces a similar endothelial injury as seen in hemorrhage, we hypothesized that plasma resuscitation would increase 48-hour survival in a rat sepsis model. METHODS: Adult male Sprague-Dawley rats (375-425 g) were subjected to 35% cecal ligation and puncture (CLP) (t = 0 h)...
June 6, 2017: Shock
https://www.readbyqxmd.com/read/28588633/determination-of-renal-handling-of-marbofloxacin-in-lohi-sheep-ovis-aries-following-a-single-intravenous-administration
#7
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
#8
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/28580332/enhancement-of-toxic-substances-clearance-from-blood-equvalent-solution-and-human-whole-blood-through-high-flux-dialyzer-by-1-mhz-ultrasound
#9
M B Shiran, M Barzegar Marvasti, A Shakeri-Zadeh, M Shahidi, N Tabkhi, F Farkhondeh, E Kalantar, A Asadinejad
BACKGROUND: Hemodialysis is a process of removing waste and excess fluid from blood when kidneys cannot function efficiently. It often involves diverting blood to the filter of the dialysis machin to be cleared of toxic substances. Fouling of pores in dialysis membrane caused by adhesion of plasma protein and other toxins will reduce the efficacy of the filtre. OBJECTIVE: In This study, the influence of pulsed ultrasound waves on diffusion and the prevention of fouling in the filter membrane were investigated...
June 2017: Journal of Biomedical Physics & Engineering
https://www.readbyqxmd.com/read/28577667/clinical-syntax-score-predicts-outcomes-of-patients-undergoing-coronary-artery-bypass-grafting
#10
Giovanni Melina, Emiliano Angeloni, Simone Refice, Francesco Monti, Roberto Serdoz, Stefano Rosato, Fulvia Seccareccia, Furio Colivicchi, Roberta Serdoz, Francesco Paneni, Riccardo Sinatra
BACKGROUND: The SYNTAX score (SS) is a determinant of outcome in patients undergoing percutaneous coronary intervention. In addition, it has been recently shown that the clinical SYNTAX score (cSS), obtained by adding clinical variables to the SS, improves the predictive power of the resulting risk model. We assessed the hypothesis that the use of the cSS may predict outcomes of patients undergoing coronary artery bypass grafting (CABG). METHODS: We measured the SYNTAX score in 874 patients undergoing isolated first time on-pump CABG...
June 2017: American Heart Journal
https://www.readbyqxmd.com/read/28575886/role-of-donors-and-recipients-glutathione-s-transferase-gene-polymorphisms-in-association-of-oxidative-stress-with-delayed-graft-function-in-kidney-allograft-recipients
#11
Jalal Azmandian, Ali Mandegary, Mahboobeh Pootari, Mohamad-Hadi Nematolahi, Mohammad-Reza Ebadzadeh, Simin-Dokht Habibzadeh, Mohammad-Hassan Dehghani-Firouzabadi, Abbas Etminan, Faramarz Fazeli, Maryamalsadat Mousavi
INTRODUCTION: Oxidative stress contributes to delayed graft function (DGF). Glutathione S-transferases (GSTs) are polymorphic genes which produce enzymes with protective effect against oxidative stress. This study aimed to investigate the association between donors' and recipients' GSTM1 and GSTT1 polymorphisms and DGF, creatinine clearance, and oxidative stress parameters in kidney allograft recipients. MATERIALS AND METHODS: One hundred and eighty-two donor-recipient pairs were studied...
May 2017: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/28572855/skin-autofluorescence-a-non-invasive-biomarker-for-advanced-glycation-end-products-is-associated-with-the-metabolic-syndrome-and-its-individual-components
#12
Robert P van Waateringe, Sandra N Slagter, Andre P van Beek, Melanie M van der Klauw, Jana V van Vliet-Ostaptchouk, Reindert Graaff, Andrew D Paterson, Helen L Lutgers, Bruce H R Wolffenbuttel
BACKGROUND: The metabolic syndrome (MetS) comprises several cardiometabolic risk factors associated with increased risk for both type 2 diabetes and cardiovascular disease. Skin autofluorescence (SAF), a non-invasive biomarker of advanced glycation end products accumulation, is associated with cardiovascular complications in subjects with diabetes. The aim of the present study was to examine the association between SAF and the presence of MetS as well as its individual components in a general population...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28571926/urinary-sodium-excretion-after-gastric-bypass-surgery
#13
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/28569187/the-effects-of-acute-renal-denervation-on-kidney-perfusion-and-metabolism-in-experimental-septic-shock
#14
Emiel Hendrik Post, Fuhong Su, Koji Hosokawa, Fabio Silvio Taccone, Antoine Herpain, Jacques Creteur, Daniel De Backer, Jean-Louis Vincent
BACKGROUND: Perfusion deficits likely play an important role in the development of renal dysfunction in sepsis. Renal denervation may improve kidney perfusion and metabolism. METHODS: We randomized 14 female sheep to undergo bilateral surgical renal denervation (n = 7) or sham procedure (n = 7) prior to induction of sepsis. Renal blood flow (RBF) was measured with a pre-calibrated flowprobe. Laser Doppler probes were implanted to measure cortical and medullary perfusion...
May 31, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28565889/renal-function-markers-and-metformin-eligibility
#15
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
#16
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
#17
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
#18
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/28536776/development-of-improved-dosing-regimens-for-mycophenolate-mofetil-based-on-population-pharmacokinetic-analyses-in-adults-with-lupus-nephritis
#19
Azrin N Abd Rahman, Susan E Tett, Halim A Abdul Gafor, Brett C McWhinney, Christine E Staatz
BACKGROUND AND OBJECTIVE: Mycophenolic acid (MPA) provides effective treatment for lupus nephritis patients. Owing to its large pharmacokinetic variability, it is questionable whether standard fixed dose therapy can achieve optimal MPA exposure. The aim of this study was to develop a population pharmacokinetic model of MPA and its metabolite, 7-O-MPA-β-glucuronide (MPAG), to identify important covariate influences and better predict patient dosing requirements. METHODS: MPA and MPAG concentration-time profiles were collected from 25 patients receiving mycophenolate mofetil (MMF) with or without cyclosporine (CsA) co-therapy...
May 23, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28529539/jiangtang-decoction-ameliorate-diabetic-nephropathy-through-the-regulation-of-pi3k-akt-mediated-nf-%C3%AE%C2%BAb-pathways-in-kk-ay-mice
#20
Jin-Ni Hong, Wei-Wei Li, Lin-Lin Wang, Hao Guo, Yong Jiang, Yun-Jia Gao, Peng-Fei Tu, Xue-Mei Wang
BACKGROUND: Jiangtang decoction (JTD) is a China patented drug which contains Euphorbia humifusa Willd, Salvia miltiorrhiza Bunge, Astragalus mongholicus Bunge, Anemarrhena asphodeloides Bunge, and Coptis chinensis Franch. For decades, it has also been used clinically to treat diabetic nephropathy (DN) effectively; however, the associated mechanisms remain unknown. Thus, the present study aimed to examine the protective efficacy of JTD in DN and elucidate the underlying molecular mechanisms...
2017: Chinese Medicine
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