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https://www.readbyqxmd.com/read/29351006/associations-between-microalbuminuria-and-parameters-of-flow-mediated-vasodilatation-obtained-by-continuous-measurement-approaches
#1
Rie Koyoshi, Yuka Hitaka-Yoshimine, Yuhei Shiga, Takashi Kuwano, Makoto Sugihara, Amane Ike, Atsushi Iwata, Hideto Sako, Natsumi Morito, Akira Kawamura, Shin-Ichiro Miura
The associations between microalbuminuria and various parameters of flow-mediated vasodilatation (FMD) are not completely understood. We retrospectively analyzed 265 consecutive patients who underwent coronary angiography and in whom we could measure FMD and the urine albumin-creatinine ratio (UACR). Using 15 continuous measurement approaches, we measured FMD as the magnitude of the percentage change in the brachial artery diameter from baseline to peak (bFMD), the maximum FMD rate calculated as the maximal slope of dilation (FMD-MDR), and the integrated FMD response calculated as the area under the dilation curve during the 60- and 120-s dilation periods (FMD-AUC60 and FMD-AUC120)...
January 19, 2018: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29346414/reliability-of-plasma-polar-metabolite-concentrations-in-a-large-scale-cohort-study-using-capillary-electrophoresis-mass-spectrometry
#2
Sei Harada, Akiyoshi Hirayama, Queenie Chan, Ayako Kurihara, Kota Fukai, Miho Iida, Suzuka Kato, Daisuke Sugiyama, Kazuyo Kuwabara, Ayano Takeuchi, Miki Akiyama, Tomonori Okamura, Timothy M D Ebbels, Paul Elliott, Masaru Tomita, Asako Sato, Chizuru Suzuki, Masahiro Sugimoto, Tomoyoshi Soga, Toru Takebayashi
BACKGROUND: Cohort studies with metabolomics data are becoming more widespread, however, large-scale studies involving 10,000s of participants are still limited, especially in Asian populations. Therefore, we started the Tsuruoka Metabolomics Cohort Study enrolling 11,002 community-dwelling adults in Japan, and using capillary electrophoresis-mass spectrometry (CE-MS) and liquid chromatography-mass spectrometry. The CE-MS method is highly amenable to absolute quantification of polar metabolites, however, its reliability for large-scale measurement is unclear...
2018: PloS One
https://www.readbyqxmd.com/read/29325997/reduced-cortical-oxygenation-predicts-a-progressive-decline-of-renal-function-in-patients-with-chronic-kidney-disease
#3
Menno Pruijm, Bastien Milani, Edward Pivin, Agata Podhajska, Bruno Vogt, Matthias Stuber, Michel Burnier
Renal tissue hypoxia is a final pathway in the development and progression of chronic kidney disease (CKD), but whether renal oxygenation predicts renal function decline in humans has not been proven. Therefore, we performed a prospective study and measured renal tissue oxygenation by blood oxygenation level-dependent magnetic resonance imaging (BOLD-MRI) in 112 patients with CKD, 47 with hypertension without CKD, and 24 healthy control individuals. Images were analyzed with the twelve-layer concentric objects method that divided the renal parenchyma in 12 layers of equal thickness and reports the mean R2* value of each layer (a high R2* corresponds to low oxygenation), along with the change in R2* between layers called the R2* slope...
January 9, 2018: Kidney International
https://www.readbyqxmd.com/read/29311069/meropenem-vaborbactam-single-dose-pharmacokinetics-and-safety-in-subjects-with-chronic-renal-impairment
#4
Christopher M Rubino, Sujata M Bhavnani, Jeffery S Loutit, Brooke Lohse, Michael N Dudley, David C Griffith
Vaborbactam is a member of a new class of β-lactamase inhibitors with inhibitory activity against serine carbapenemases (e.g. Klebsiella pneumoniae carbapenemase) that has been developed in combination with meropenem. Pharmacokinetics of the combination were evaluated in 41 subjects with chronic renal impairment in a Phase 1, open-label, single-dose study. Subjects were assigned to one of five groups based on renal function: normal (creatinine clearance ≥90 mL/min), mild (estimated glomerular filtration rate [eGFR] 60-89 mL/min/1...
January 8, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29191357/patient-specific-evolution-of-renal-function-in-chronic-heart-failure-patients-dynamically-predicts-clinical-outcome-in-the-bio-shift-study
#5
Milos Brankovic, K Martijn Akkerhuis, Nick van Boven, Sharda Anroedh, Alina Constantinescu, Kadir Caliskan, Olivier Manintveld, Jan Hein Cornel, Sara Baart, Dimitris Rizopoulos, Hans Hillege, Eric Boersma, Victor Umans, Isabella Kardys
Renal dysfunction is an important component of chronic heart failure (CHF), but its single assessment does not sufficiently reflect clinically silent progression of CHF prior to adverse clinical outcome. Therefore, we aimed to investigate temporal evolutions of glomerular and tubular markers in 263 stable patients with CHF, and to determine if their patient-specific evolutions during this clinically silent period can dynamically predict clinical outcome. We determined the risk of clinical outcome (composite endpoint of Heart Failure hospitalization, cardiac death, Left Ventricular Assist Device placement, and heart transplantation) in relation to marker levels, slopes and areas under their trajectories...
November 28, 2017: Kidney International
https://www.readbyqxmd.com/read/29153995/longitudinal-estimated-gfr-trajectories-in-patients-with-and-without-type-2-diabetes-and-nephropathy
#6
Misghina Weldegiorgis, Dick de Zeeuw, Liang Li, Hans-Henrik Parving, Fan Fan Hou, Giuseppe Remuzzi, Tom Greene, Hiddo J L Heerspink
BACKGROUND: In clinical practice and clinical trials, changes in serum creatinine concentrations are used to evaluate changes in kidney function. It has been assumed that these changes follow a linear pattern when serum creatinine concentration is converted to estimated glomerular filtration rate (eGFR). However, the paradigm that kidney function declines linearly over time has been questioned by studies showing either linear or nonlinear patterns. To verify how this impacts on kidney end points in intervention trials, we analyzed eGFR trajectories in multiple clinical trials of patients with and without diabetes...
January 2018: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29146600/n-glycan-profile-and-kidney-disease-in-type-1-diabetes
#7
Mairead L Bermingham, Marco Colombo, Stuart J McGurnaghan, Luke A K Blackbourn, Frano Vučković, Maja Pučić Baković, Irena Trbojević-Akmačić, Gordan Lauc, Felix Agakov, Anna S Agakova, Caroline Hayward, Lucija Klarić, Colin N A Palmer, John R Petrie, John Chalmers, Andrew Collier, Fiona Green, Robert S Lindsay, Sandra Macrury, John A McKnight, Alan W Patrick, Sandeep Thekkepat, Olga Gornik, Paul M McKeigue, Helen M Colhoun
OBJECTIVE: Poorer glycemic control in type 1 diabetes may alter N-glycosylation patterns on circulating glycoproteins, and these alterations may be linked with diabetic kidney disease (DKD). We investigated associations between N-glycans and glycemic control and renal function in type 1 diabetes. RESEARCH DESIGN AND METHODS: Using serum samples from 818 adults who were considered to have extreme annual loss in estimated glomerular filtration rate (eGFR; i.e., slope) based on retrospective clinical records, from among 6,127 adults in the Scottish Diabetes Research Network Type 1 Bioresource Study, we measured total and IgG-specific N-glycan profiles...
November 16, 2017: Diabetes Care
https://www.readbyqxmd.com/read/29112764/sleep-apnea-and-kidney-function-trajectory-results-from-a-20-year-longitudinal-study-of-healthy-middle-aged-adults
#8
Muna T Canales, Erika W Hagen, Jodi H Barnet, Paul E Peppard, Stephen F Derose
Objective: To determine whether sleep apnea, defined by polysomnography, accelerates kidney function decline in generally healthy adults not selected for sleep apnea or kidney disease. Methods: We performed a retrospective cohort study 855 participants from the Wisconsin Sleep Cohort Study (WSCS), a large 20-year population-based study of sleep apnea, who had at least one polysomnogram and serial measurements of serum creatinine over time. Sleep apnea was defined as an apnea-hypopnea index ≥15 or positive airway pressure (PAP) use at baseline...
November 3, 2017: Sleep
https://www.readbyqxmd.com/read/29077658/early-conversion-to-belatacept-in-kidney-transplant-recipient-with-low-glomerular-filtration-rate
#9
Dina Abdelwahab Elhamahmi, Raymond L Heilman, Byron Smith, Janna Huskey, Hasan Khamash, Bruce Kaplan
BACKGROUND: Our aim was to determine the impact of converting from tacrolimus to belatacept in patients with stable low eGFR early after kidney transplant. METHODS: This is a single center retrospective case control study. During this study period we had a clinical protocol to convert patients to belatacept if they had a stable but low GFR and they were at least 1-month posttransplant. Eligible patients had stable but low eGFR usually < 40 ml/min/1.73m2. We used direct matching to select 1 control case for each patient converted to belatacept...
October 26, 2017: Transplantation
https://www.readbyqxmd.com/read/29037450/tissue-expression-of-tubular-injury-markers-is-associated-with-renal-function-decline-in-diabetic-nephropathy
#10
Subin Hwang, Jeeeun Park, Jinhae Kim, Hye Ryoun Jang, Ghee Young Kwon, Wooseong Huh, Yoon-Goo Kim, Dae Joong Kim, Ha Young Oh, Jung Eun Lee
AIMS: The pathogenesis of diabetic kidney disease (DKD) is complex and multifactorial; increasing evidence suggests that tubular injury and inflammatory process are involved in disease progression. We investigated the potential association of renal expression of tubular injury markers, neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule-1 (KIM-1), and inflammatory markers, tumor necrosis factor receptor (TNFR) 1 and 2 with renal progression in pathologically proven diabetic nephropathy (DN)...
August 24, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28912373/the-association-of-sleep-duration-and-quality-with-ckd-progression
#11
Ana C Ricardo, Kristen Knutson, Jinsong Chen, Lawrence J Appel, Lydia Bazzano, Eunice Carmona-Powell, Janet Cohan, Manjula Kurella Tamura, Susan Steigerwalt, John Daryl Thornton, Matthew Weir, Nicolas F Turek, Mahboob Rahman, Eve Van Cauter, James P Lash
Evidence suggests that sleep disorders are common in individuals with CKD, but the influence of sleep duration and quality on CKD progression is unknown. We examined the association of habitual sleep duration and quality with CKD progression in 431 Chronic Renal Insufficiency Cohort (CRIC) Study participants, of whom 48% were women and 50% had diabetes (mean age of 60 years old, mean eGFR =38 ml/min per 1.73 m2, and median urine protein-to-creatinine ratio [UPCR] =0.20 g/g). We assessed sleep duration and quality by 5-7 days of wrist actigraphy and self-report...
September 14, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28867309/b-cell-activating-factor-baff-reflects-patients-immunological-risk-profile-after-kidney-transplantation
#12
A Schuster, B Jung, J Hofbauer, L Kühne, D Zecher, B Banas, T Bergler
The B-cell activating factor BAFF plays an important role in the development and maturation of B-lymphocytes, which can contribute to the generation of donor-specific antibodies and thus may influence graft function and graft survival. Inconsistent data on the role of BAFF levels after renal transplantation for the formation of donor-specific antibodies and the contribution for allograft rejection exist. The aim of the current study was to determine to what extent the degree of pre-immunization is reflected by each patient's BAFF levels before transplantation and in the follow-up...
September 1, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28807385/external-validation-of-a-5-year-survival-prediction-model-after-elective-abdominal-aortic-aneurysm-repair
#13
Randall R DeMartino, Ying Huang, Jay Mandrekar, Philip P Goodney, Gustavo S Oderich, Manju Kalra, Thomas C Bower, Jack L Cronenwett, Peter Gloviczki
OBJECTIVE: The benefit of prophylactic repair of abdominal aortic aneurysms (AAAs) is based on the risk of rupture exceeding the risk of death from other comorbidities. The purpose of this study was to validate a 5-year survival prediction model for patients undergoing elective repair of asymptomatic AAA <6.5 cm to assist in optimal selection of patients. METHODS: All patients undergoing elective repair for asymptomatic AAA <6.5 cm (open or endovascular) from 2002 to 2011 were identified from a single institutional database (validation group)...
August 11, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28800936/associations-between-dietary-salt-potassium-and-blood-pressure-in%C3%A2-south-african-adults-who-sage-wave-2-salt-tobacco
#14
COMPARATIVE STUDY
L J Ware, K Charlton, A E Schutte, M Cockeran, N Naidoo, P Kowal
BACKGROUND & AIMS: In June 2016, South Africa implemented legislation mandating maximum sodium levels in a range of processed foods with a goal of reducing population salt intake and disease burden from hypertension. Our aim was to explore the relationship between salt and blood pressure (BP) in a subsample of the World Health Organization Study on global AGEing and adult health (SAGE) Wave 2 before implementation of legislation in South Africa. METHODS & RESULTS: Blood pressure (BP) was measured in triplicate (n = 2722; median age 56 years; 33% male) and 24-h urine collected in a nested subsample (n = 526) for sodium, potassium and creatinine analysis...
September 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28794065/vasa-recta-pericyte-density-is-negatively-associated-with-vascular-congestion-in-the-renal-medulla-following-ischemia-reperfusion-in-rats
#15
G Ryan Crislip, Paul M O'Connor, Qingqing Wei, Jennifer C Sullivan
Recent evidence suggests that a greater density of pericytes in renal cadaveric allografts is associated with better recovery following transplant. The physiological mechanism(s) through which pericyte density may be beneficial is not well understood. The goal of this study was to test the hypothesis that lower medullary pericyte density is associated with greater renal injury following ischemia reperfusion (IR) in a rat model, providing a basis for future studies to better understand pericytes in a pathological environment...
August 9, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28775248/clinical-outcome-of-rituximab-and-intravenous-immunoglobulin-combination-therapy-in-kidney-transplant-recipients-with-chronic-active-antibody-mediated-rejection
#16
Tae Hyun Ban, Ji Hyun Yu, Byung Ha Chung, Bum Soon Choi, Cheol Whee Park, Yong-Soo Kim, Chul Woo Yang
BACKGROUND We previously reported that rituximab (RIT) and intravenous immunoglobulin (IVIg) combination therapy is effective in deterring the progression of chronic active antibody-mediated rejection (CAMR), but that report was based on the assessment of a small number of cases for a short period. MATERIAL AND METHODS Forty-three patients with CAMR were recruited during the study period after 2010. The patients were divided into high (n=17, 39.5%) and low proteinuria groups (n=26, 60.5%) based on spot urine protein-to-creatinine ratio of > or <3...
August 4, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28727739/survival-analysis-of-heart-failure-patients-a-case-study
#17
Tanvir Ahmad, Assia Munir, Sajjad Haider Bhatti, Muhammad Aftab, Muhammad Ali Raza
This study was focused on survival analysis of heart failure patients who were admitted to Institute of Cardiology and Allied hospital Faisalabad-Pakistan during April-December (2015). All the patients were aged 40 years or above, having left ventricular systolic dysfunction, belonging to NYHA class III and IV. Cox regression was used to model mortality considering age, ejection fraction, serum creatinine, serum sodium, anemia, platelets, creatinine phosphokinase, blood pressure, gender, diabetes and smoking status as potentially contributing for mortality...
2017: PloS One
https://www.readbyqxmd.com/read/28700482/beneficial-effects-of-fu-zheng-qu-zhuo-oral-liquid-combined-with-standard-integrated-therapy-in-patients-with-chronic-kidney-disease-stage-3-4-a-randomized-placebo-controlled-clinical-trial
#18
RANDOMIZED CONTROLLED TRIAL
Shen Li, Xiang-Rong Rao, Xi-Wen Dai, Kun Pei, Lee Wang, Bao-Min Huo, Xiu-Juan Wang, Ling-Xin Kong, Nan-Nan Zhang, Feng-Mei Lian
BACKGROUND: The high worldwide prevalence of chronic kidney disease (CKD) is a critical health problem and the development of more effective therapies is urgently needed. We conducted a randomized, double-blinded, placebo-controlled clinical trial from October 2010 to December 2012 to assess whether Fu-Zheng-Qu-Zhuo oral liquid (FZQZ) has a beneficial effect in preventing CKD progression when added to standard integrated therapies. METHODS: Patients with CKD stage 3 to 4 from 3 hospitals in Beijing, China were enrolled...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28621156/pilot-study-use-of-contrast-enhanced-ultrasonography-in-feline-renal-transplant-recipients
#19
Esther H Greenbarg, David A Jiménez, Lucas A Nell, Chad W Schmiedt
Objectives The study aims were to evaluate the feasibility of contrast-enhanced ultrasonography in feline renal transplant recipients in the post-transplantation period and to report findings in a case with presumptive delayed allograft ischemia. Methods Cats were imaged postoperatively using contrast harmonic ultrasonography after a bolus injection of a microbubble contrast medium. Time/mean pixel intensity curves were generated for cortical and medullary regions of interest in the renal allograft in each cat...
June 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28614813/polycystic-kidney-disease-and-the-vasopressin-pathway
#20
Maatje D A van Gastel, Vicente E Torres
Vasopressin, also known as arginine vasopressin or antidiuretic hormone, plays a pivotal role in maintaining body homeostasis. Increased vasopressin concentrations, measured by its surrogate copeptin, have been associated with disease severity as well as disease progression in polycystic kidney disease (PKD), and in experimental studies vasopressin has been shown to directly regulate cyst growth. Blocking vasopressin effects on the kidney via the vasopressin V2-receptor and lower circulating vasopressin concentration are potential treatment opportunities that have been the subject of study in PKD in recent years...
2017: Annals of Nutrition & Metabolism
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