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renal IRI

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https://www.readbyqxmd.com/read/28209765/renin-angiotensin-system-inhibition-worsening-renal-function-and-outcome-in-heart-failure-patients-with-reduced-and-preserved-ejection-fraction-a-meta-analysis-of-published-study-data
#1
Iris E Beldhuis, Koen W Streng, Jozine M Ter Maaten, Adriaan A Voors, Peter van der Meer, Patrick Rossignol, John J V McMurray, Kevin Damman
BACKGROUND: Renin-angiotensin aldosterone system (RAAS) inhibitors significantly improve outcome in heart failure (HF) patients with reduced ejection fraction (HFREF), irrespective of the occurrence of worsening renal function (WRF). However, in HF patients with preserved ejection fraction (HFPEF), RAAS inhibitors have not been shown to improve outcome but are still frequently prescribed. METHODS AND RESULTS: Random effect meta-analysis was performed to investigate the relationship between RAAS inhibitor therapy, WRF in both HF phenotypes, and mortality...
February 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/28198766/the-differential-effect-of-apyrase-treatment-and-hcd39-overexpression-on-chronic-renal-fibrosis-following-ischemia-reperfusion-injury
#2
Veena Roberts, Duncan J Campbell, Bo Lu, Joanne Chia, Peter J Cowan, Karen M Dwyer
BACKGROUND: Renal ischemia reperfusion injury (IRI) leads to acute kidney injury and renal fibrosis. CD39 is a key purinergic enzyme in the hydrolysis of ATP and increased CD39 enzymatic activity protects from acute IRI but its effect on renal fibrosis is not known. METHODS: Using a mouse model of unilateral renal IRI, the effects of increased CD39 activity (using soluble apyrase and mice expressing human CD39 transgene) on acute and chronic renal outcomes were examined...
February 14, 2017: Transplantation
https://www.readbyqxmd.com/read/28198147/intrahepatic-fat-abdominal-adipose-tissues-and-metabolic-state-magnetic-resonance-imaging-study
#3
Anat Yaskolka Meir, Lilac Tene, Noa Cohen, Ilan Shelef, Dan Schwarzfuchs, Yftach Gepner, Hila Zelicha, Michal Rein, Nitzan Bril, Dana Serfaty, Shira Kenigsbuch, Yoash Chassidim, Benjamin Sarusy, Dror Dicker, Joachim Thiery, Uta Ceglarek, Michael Stumvoll, Matthias Blüher, Meir J Stampfer, Assaf Rudich, Iris Shai
BACKGROUND: Intrahepatic-fat (IHF) is best known to associate with waist circumference (WC) and visceral-adipose-tissue (VAT), but its relation to abdominal subcutaneous-adipose tissue (SAT) is controversial. While IHF > 5% dichotomously defines fatty liver, %IHF is rarely considered as a continuous variable that includes the normal range. In this study, we aimed to evaluate %IHF association with abdominal fat sub-depots, pancreatic and renal-sinus fats. METHODS: We evaluated %IHF, abdominal fat sub-depots, %pancreatic and renal-sinus fats, among individuals with moderate abdominal obesity, using 3-T magnetic resonance imaging (MRI)...
February 14, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28186657/association-of-vitamin-d-metabolites-with-parathyroid-hormone-fibroblast-growth-factor-23-calcium-and-phosphorus-in-dogs-with-various-stages-of-chronic-kidney-disease
#4
V J Parker, L M Harjes, K Dembek, G S Young, D J Chew, R E Toribio
BACKGROUND: Hypovitaminosis D is associated with progression of renal disease, development of renal secondary hyperparathyroidism (RHPT), chronic kidney disease-mineral bone disorder (CKD-MBD), and increased mortality in people with CKD. Despite what is known regarding vitamin D dysregulation in humans with CKD, little is known about vitamin D metabolism in dogs with CKD. OBJECTIVES: The purpose of our study was to further elucidate vitamin D status in dogs with different stages of CKD and to relate it to factors that affect the development of CKD-MBD, including parathyroid hormone (PTH), fibroblast growth factor-23 (FGF-23), calcium, and phosphorus concentrations...
February 10, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28184034/hyperbaric-oxygenation-protects-against-ischemia-reperfusion-injury-in-transplanted-rat-kidneys-by-triggering-autophagy-and-inhibiting-inflammatory-response
#5
Ding-Su Bao, Yu-Ke Wu, Shi-Jie Fu, Guo-You Wang, Si-Jin Yang, Guo-Biao Liang, Zhi-Hui Xie, Song Rong
BACKGROUND Ischemia-reperfusion injury (IRI) is a clinically common pathologic process defined as the inability to improve neuronal function. This study aimed to investigate the pathological mechanism of IRI and to explore effects of hyperbaric oxygenation (HBO) on autophagy and inflammatory response in IRI. MATERIAL AND METHODS Ninety Sprague-Dawley (SD) rats were randomly divided into a Sham group, a kidney transplant group (Trans), and a kidney transplant plus HBO treatment group (Trans+HBO). The kidney was harvested from the donor and transplanted to recipient rats according to a previously reported study...
February 10, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28181337/deficiency-of-the-sphingosine-1-phosphate-lyase-sgpl1-is-associated-with-congenital-nephrotic-syndrome-and-congenital-adrenal-calcifications
#6
Andreas R Janecke, Ruijuan Xu, Elisabeth Steichen-Gersdorf, Siegfried Waldegger, Andreas Entenmann, Thomas Giner, Iris Krainer, Lukas A Huber, Michael W Hess, Yaacov Frishberg, Hila Barash, Shay Tzur, Nira Schreyer-Shafir, Rivka Sukenik-Halevy, Tania Zehavi, Annick Raas-Rothschild, Cungui Mao, Thomas Müller
We identified two unrelated consanguineous families with three children affected by the rare association of congenital nephrotic syndrome diagnosed in the first days of life, of hypogonadism, and of prenatally detected adrenal calcifications, associated with congenital adrenal insufficiency in one case. Using exome sequencing and targeted Sanger sequencing two homozygous truncating mutations, c.1513C>T (p.Arg505*) and c.934delC (p.Leu312Phefs*30), were identified in SGPL1 encoding sphingosine-1-phosphate lyase 1...
February 8, 2017: Human Mutation
https://www.readbyqxmd.com/read/28173878/the-effects-of-glomerular-and-tubular-renal-progenitors-and-derived-extracellular-vesicles-on-recovery-from-acute-kidney-injury
#7
Andrea Ranghino, Stefania Bruno, Benedetta Bussolati, Aldo Moggio, Veronica Dimuccio, Marta Tapparo, Luigi Biancone, Paolo Gontero, Bruno Frea, Giovanni Camussi
BACKGROUND: Mesenchymal stromal cells (MSCs) and renal stem/progenitors improve the recovery of acute kidney injury (AKI) mainly through the release of paracrine mediators including the extracellular vesicles (EVs). Several studies have reported the existence of a resident population of MSCs within the glomeruli (Gl-MSCs). However, their contribution towards kidney repair still remains to be elucidated. The aim of the present study was to evaluate whether Gl-MSCs and Gl-MSC-EVs promote the recovery of AKI induced by ischemia-reperfusion injury (IRI) in SCID mice...
February 7, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28167815/protective-effects-of-ischemic-preconditioning-mediated-homing-of-endothelial-progenitor-cells-on-renal-acute-ischemia-and-reperfusion-injury-in-male-rats
#8
Jianxin Xue, Zhiqiang Qin, Xiao Li, Pu Cao, Ruipeng Jia
BACKGROUND The objective of this study was to determine whether homing of endothelial progenitor cells (EPCs) induced by ischemic preconditioning (IPC) contributed to the protection of renal acute ischemia-reperfusion injury (IRI) in male rats. MATERIAL AND METHODS Forty male Sprague-Dawley rats were randomly divided into four groups, including sham-operated group, IRI-operated group, IPC-treated group and EPCs-treated group. Subsequently, serum samples were collected at 24 and 72 hours after reperfusion, respectively...
February 7, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28167630/early-phase-mast-cell-activation-determines-the-chronic-outcome-of-renal-ischemia-reperfusion-injury
#9
Luca Danelli, Lydia Celia Madjene, Iris Madera-Salcedo, Gregory Gautier, Emeline Pacreau, Sanae Ben Mkaddem, Nicolas Charles, Eric Daugas, Pierre Launay, Ulrich Blank
Ischemia-reperfusion injury (IRI) is an important cause of acute kidney injury that can lead to end-stage renal failure. Although the ensuing inflammatory response can restore homeostasis, a consecutive maladaptive repair and persistent inflammation represent important risk factors for postischemic chronic kidney disease development. In this study, we investigated the role of mast cells in both the early and late phases of the inflammatory response in experimental models of acute and chronic renal IRI using our recently developed mouse model that allows conditional ablation of mast cells...
February 6, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28160524/urinary-f2-isoprostanes-in-cats-with-international-renal-interest-society-stage-1-4-chronic-kidney-disease
#10
W Whitehouse, J Quimby, S Wan, K Monaghan, R Robbins, L A Trepanier
BACKGROUND: F2 -isoprostanes, a biomarker of oxidant injury, increase with advancing chronic kidney disease (CKD) in humans. In cats, the relationship between CKD and oxidative stress is poorly understood. OBJECTIVES: To determine whether cats with advancing CKD have increasing urinary F2 -isoprostanes. ANIMALS: Control cats without evidence of CKD (≥6 years old; n = 11), and cats with IRIS stage 1 (n = 8), 2 (n = 38), 3 (n = 21), and 4 (n = 10) CKD...
February 4, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28129785/human-umbilical-cord-derived-mesenchymal-stromal-cells-protect-against-premature-renal-senescence-resulting-from-oxidative-stress-in-rats-with-acute-kidney-injury
#11
Camila Eleuterio Rodrigues, José Manuel Condor Capcha, Ana Carolina de Bragança, Talita Rojas Sanches, Priscila Queiroz Gouveia, Patrícia Aparecida Ferreira de Oliveira, Denise Maria Avancini Costa Malheiros, Rildo Aparecido Volpini, Mirela Aparecida Rodrigues Santinho, Bárbara Amélia Aparecida Santana, Rodrigo do Tocantins Calado, Irene de Lourdes Noronha, Lúcia Andrade
BACKGROUND: Mesenchymal stromal cells (MSCs) represent an option for the treatment of acute kidney injury (AKI). It is known that young stem cells are better than are aged stem cells at reducing the incidence of the senescent phenotype in the kidneys. The objective of this study was to determine whether AKI leads to premature, stress-induced senescence, as well as whether human umbilical cord-derived MSCs (huMSCs) can prevent ischaemia/reperfusion injury (IRI)-induced renal senescence in rats...
January 28, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28129737/repeated-remote-ischemic-preconditioning-and-isoflurane-anesthesia-in-an-experimental-model-of-renal-ischemia-reperfusion-injury
#12
Theo P Menting, Mehmet Ergun, Moira H D Bruintjes, Kimberley E Wever, Roger M L M Lomme, Harry van Goor, Michiel C Warlé
BACKGROUND: In animal studies, remote ischemic preconditioning (RIPC) and anesthetic preconditioning are successful in reducing renal ischemia reperfusion injury (IRI), however the protective effect of RIPC may be improved by repeating the RIPC stimulus. METHODS: Sprague-Dawley rats underwent unilateral nephrectomy followed by 30 min of renal pedicle clamping. Animals were allocated into six groups: sham, control (IRI), RepISO (daily isoflurane anesthesia), RIPC (single dose isoflurane anesthesia and single dose RIPC), RepISO + RIPC (7-day isoflurane anesthesia and single dose RIPC) and RepISO + RepRIPC (7-day isoflurane anesthesia with 7-day RIPC)...
January 28, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28122967/hydrodynamic-isotonic-fluid-delivery-ameliorates-moderate-to-severe-ischemia-reperfusion-injury-in-rat-kidneys
#13
Jason A Collett, Peter R Corridon, Purvi Mehrotra, Alexander L Kolb, George J Rhodes, Caroline A Miller, Bruce A Molitoris, Janice G Pennington, Ruben M Sandoval, Simon J Atkinson, Silvia B Campos-Bilderback, David P Basile, Robert L Bacallao
Highly aerobic organs like the kidney are innately susceptible to ischemia-reperfusion (I/R) injury, which can originate from sources including myocardial infarction, renal trauma, and transplant. Therapy is mainly supportive and depends on the cause(s) of damage. In the absence of hypervolemia, intravenous fluid delivery is frequently the first course of treatment but does not reverse established AKI. Evidence suggests that disrupting leukocyte adhesion may prevent the impairment of renal microvascular perfusion and the heightened inflammatory response that exacerbate ischemic renal injury...
January 25, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28118507/pretreatment-with-nebivolol-attenuates-level-and-expression-of-matrix-metalloproteinases-in-a-rat-model-of-renal-ischemia-reperfusion-injury
#14
Sibel Ersan, Mehmet Tanrisev, Zahide Cavdar, Asli Celik, Mehtat Unlu, Ayse Kocak, Timur Kose
AIM: Matrix metalloproteinases (MMPs) are zinc-containing proteinases that are involved in the degradation of extracellular matrix (ECM) and a number of cell surface proteins in order to maintain tissue homeostasis. They are involved in pathogenesis of several ischemic organ injuries. In the present study, we aimed to determine the expression and level of MMP-2 and MMP-9 in renal ischemia-reperfusion injury (IRI) model and the potential beneficial effect of nebivolol, a β1 -adrenergic receptor blocker, on both MMP-2 and -9 level and expression and tubular injury caused by IRI...
January 24, 2017: Nephrology
https://www.readbyqxmd.com/read/28114941/evaluation-of-various-biomarkers-for-kidney-monitoring-during-canine-leishmaniosis-treatment
#15
Luis Pardo-Marín, Silvia Martínez-Subiela, Josep Pastor, Asta Tvarijonaviciute, Juan Diego Garcia-Martinez, Sergi Segarra, José Joaquín Cerón
BACKGROUND: The objective of this study was to evaluate and compare the evolution of the profile currently recommended by the International Renal Interest Society (IRIS) (sCr, UPC and sSDMA) with a panel of other different kidney biomarkers during treatment for canine leishmaniosis. This panel included three urinary glomerular biomarkers (uIgG, uCRP and uferritin) and three urinary tubular biomarkers (uGGT, uNAG and uRBP). These biomarkers were measured in two groups of dogs with canine leishmaniosis at IRIS stage I...
January 23, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28109131/changes-in-serum-creatinine-concentration-and-acute-kidney-injury-aki-grade-in-dogs-treated-with-hydroxyethyl-starch-130-0-4-from-2013-to-2015
#16
N E Sigrist, N Kälin, A Dreyfus
BACKGROUND: Hydroxyethyl starch (HES) solutions may cause acute kidney injury (AKI) in humans. OBJECTIVE: To compare AKI grades in 94 dogs exposed and 90 dogs that were unexposed to 6% HES-130/0.4. ANIMALS: Dogs receiving 6% HES-130/0.4 (HES cohort) or crystalloids (unexposed cohort) between 2013 and 2015. METHODS: Historical cohort study. Diagnosis, total cumulative dose and total mL/kg of HES administered, time frame of HES administration and serum creatinine concentrations up to 90 days after initiation of HES treatment were retrospectively reviewed...
January 21, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28104152/experience-of-quatro-therapy-with-everolimus-to-minimize-calcineurin-inhibitor-for-kidney-transplant-recipients
#17
N Nakamura, T Miyazaki, H Matsuzaki, R Furuya, S Miyajima, S Irie, H Matsuoka, M Tanaka
BACKGROUND: This study was divided into three phases, on the occasion of the introduction of everolimus (EVR) in our hospital. METHODS: In the first phase, a study group of six maintenance patients (three living related donors, three deceased donors) who had a history of malignant disease with less than 500 mg/day of proteinuria were enrolled; a high serum creatinine and upper limit of duration after kidney transplant operation was not considered. EVR was discontinued in four of the six patients because of side effects or worsening renal function...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28102354/a-signature-of-renal-stress-resistance-induced-by-short-term-dietary-restriction-fasting-and-protein-restriction
#18
F Jongbloed, T C Saat, M Verweij, C Payan-Gomez, J H J Hoeijmakers, S van den Engel, C T van Oostrom, G Ambagtsheer, S Imholz, J L A Pennings, H van Steeg, J N M IJzermans, M E T Dollé, R W F de Bruin
During kidney transplantation, ischemia-reperfusion injury (IRI) induces oxidative stress. Short-term preoperative 30% dietary restriction (DR) and 3-day fasting protect against renal IRI. We investigated the contribution of macronutrients to this protection on both phenotypical and transcriptional levels. Male C57BL/6 mice were fed control food ad libitum, underwent two weeks of 30%DR, 3-day fasting, or received a protein-, carbohydrate- or fat-free diet for various periods of time. After completion of each diet, renal gene expression was investigated using microarrays...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28101117/maternal-mortality-ratio-and-causes-of-death-in-iri-between-2009-and-2012
#19
Marzieh Vahiddastjerdy, Nasrin Changizi, Abas Habibollahi, Leila Janani, Zahra Farahani, Farah Babaee
Objective: The Maternal Mortality Ratio is an important health indicator. We presented the distribution and causes of maternal mortality in Islamic Republic of Iran. Materials and methods: After provision of an electronic Registry system for date entry, a descriptive-retrospective data collection had been performed for all maternal Deaths in March 2009- March 2012. All maternal deaths and their demographic characteristic were identified by using medical registries, death certificates, and relevant codes according to International Classification of Diseases (ICD-9) during pregnancy, labor, and 42 days after parturition...
September 2016: Journal of Family & Reproductive Health
https://www.readbyqxmd.com/read/28094329/fumarase-activity-an-in-vivo-and-in-vitro-biomarker-for-acute-kidney-injury
#20
Per Mose Nielsen, Abubakr Eldirdiri, Lotte Bonde Bertelsen, Hans Stødkilde Jørgensen, Jan Henrik Ardenkjaer-Larsen, Christoffer Laustsen
Renal ischemia/reperfusion injury (IRI) is a leading cause of acute kidney injury (AKI), and at present, there is a lack of reliable biomarkers that can diagnose AKI and measure early progression because the commonly used methods cannot evaluate single-kidney IRI. Hyperpolarized [1,4-(13)C2]fumarate conversion to [1,4-(13)C2]malate by fumarase has been proposed as a measure of necrosis in rat tumor models and in chemically induced AKI rats. Here we show that the degradation of cell membranes in connection with necrosis leads to elevated fumarase activity in plasma and urine and secondly that hyperpolarized [1,4-(13)C2]malate production 24 h after reperfusion correlates with renal necrosis in a 40-min unilateral ischemic rat model...
January 17, 2017: Scientific Reports
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