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Acute Kidney Injury Biomarkers

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https://www.readbyqxmd.com/read/28094329/fumarase-activity-an-in-vivo-and-in-vitro-biomarker-for-acute-kidney-injury
#1
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
https://www.readbyqxmd.com/read/28089174/neonatal-acute-kidney-injury-severity-and-recovery-prediction-and-the-role-of-serum-and-urinary-biomarkers
#2
Deirdre U Sweetman
Neonatal acute kidney injury is common, in part due to incomplete renal maturation and also due to frequent exposure to risk factors for acute kidney injury such as perinatal asphyxia, extracorporeal-membrane-oxygenation, cardiac surgery, sepsis, prematurity and nephrotoxicity. However the current method by which acute kidney injury is diagnosed is sub-optimal and not universally accepted which impairs the accurate estimation of the true incidence of neonatal acute kidney injury. Serum Cystatin-C, urinary NGAL, KIM-1 and IL-18 are promising neonatal acute kidney injury biomarkers however the diagnosis of acute kidney injury remains serum creatinine/urine output-based in many studies...
January 11, 2017: Early Human Development
https://www.readbyqxmd.com/read/28078828/biomarkers-upon-discontinuation-of-renal-replacement-therapy-predict-60-day-survival-and-renal-recovery-in-critically-ill-patients-with-acute-kidney-injury
#3
Tingting Yang, Si Sun, Yuliang Zhao, Qiang Liu, Mei Han, Liping Lin, Baihai Su, Songmin Huang, Lichuan Yang
Introduction There is no consensus on the specific indications for weaning critically ill patients with acute kidney injury (AKI) off renal replacement therapy (RRT). This study aimed to explore the prognostic value of several biomarkers measured upon discontinuation of RRT for their value in predicting 60-day survival and renal recovery in an effort to add knowledge to the decision-making process regarding RRT withdrawal. Methods We prospectively enrolled 102 patients with AKI who required RRT from the intensive care unit...
January 11, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28076311/biomarkers-of-acute-kidney-injury-the-pathway-from-discovery-to-clinical-adoption
#4
Kianoush Kashani, Wisit Cheungpasitporn, Claudio Ronco
Acute kidney injury (AKI) is a common complication of critical illnesses and has a significant impact on outcomes, including mortality and morbidities. Unfortunately, apart from prophylactic measures, no effective treatment for this syndrome is known. Therefore, early recognition of AKI not only can provide better opportunities for preventive interventions, but also opens many gates for research and development of effective therapeutic options. Over the last few years, several new AKI biomarkers have been discovered and validated to improve early detection, differential diagnosis, and differentiation of patients into risk groups for progressive renal failure, need for renal replacement therapy (RRT), or death...
January 11, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28075469/urinary-kidney-injury-molecule%C3%A2-1-as-an-early-diagnostic-biomarker-of-obstructive-acute-kidney-injury-and-development-of-a-rapid-detection-method
#5
Yingli Jin, Xiaona Shao, Bo Sun, Chunsheng Miao, Zhengqiang Li, Yan Shi
The aim of the present study was to investigate whether urinary kidney injury molecule‑1 (KIM‑1) presents a suitable early diagnostic biomarker of obstructive nephropathy‑induced acute kidney injury (AKI), and to develop a rapid detection method for urinary KIM‑1. Obstructive AKI was induced in an experimental rat model by a unilateral ureteral obstruction (UUO) operation. Macro‑ and micromorphological kidney alterations were determined by visual observation and hematoxylin and eosin (HE) staining, respectively...
January 5, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28074603/supplementing-diet-with-manitoba-lingonberry-juice-reduces-kidney-ischemia-reperfusion-injury
#6
Cara K Isaak, Pengqi Wang, Suvira Prashar, Karmin O, Daniel C W Brown, Samir C Debnath, Yaw L Siow
BACKGROUND: Lingonberry (Vaccinium vitis-idaea L.) contains high levels of anthocyanins which are bioavailable in the kidney and may be protective against ischemia-reperfusion (IR)-induced acute kidney injury. This study investigated the effect of lingonberry juice on IR-induced stress-activated signaling pathway and inflammatory response in the kidney. RESULTS: Sprague-Dawley rats subjected to kidney IR had significantly impaired kidney function, with increased activation of the JNK signaling pathway and increased inflammatory response, measured using a multiplex panel containing an extensive array of inflammatory biomarkers...
January 11, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28065798/monitoring-treatment-of-acute-kidney-injury-with-damage-biomarkers
#7
T J Pianta, L Succar, T Davidson, N A Buckley, Z H Endre
BACKGROUND: Damage biomarkers may identify mechanisms and sites of acute kidney injury (AKI). However, the utility of novel AKI biomarkers differs by context, and their utility for monitoring treatment of AKI is unknown. We hypothesized that selected AKI biomarkers would facilitate monitoring of mechanism-specific treatment. We examined this using a panel of biomarkers to monitor cisplatin-induced AKI treatment with alpha-lipoic acid (α-LA) that has previously been demonstrated to ameliorate cisplatin induced AKI...
January 5, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28062569/inhibition-of-%C3%AE-v%C3%AE-5-integrin-attenuates-vascular-permeability-and-protects-against-renal-ischemia-reperfusion-injury
#8
Amy McCurley, Stella Alimperti, Silvia B Campos-Bilderback, Ruben M Sandoval, Jenna E Calvino, Taylor L Reynolds, Catherine Quigley, Joshua W Mugford, William J Polacheck, Ivan G Gomez, Jennifer Dovey, Graham Marsh, Angela Huang, Fang Qian, Paul H Weinreb, Brian M Dolinski, Shaun Moore, Jeremy S Duffield, Christopher S Chen, Bruce A Molitoris, Shelia M Violette, Michael A Crackower
Ischemia-reperfusion injury (IRI) is a leading cause of AKI. This common clinical complication lacks effective therapies and can lead to the development of CKD. The αvβ5 integrin may have an important role in acute injury, including septic shock and acute lung injury. To examine its function in AKI, we utilized a specific function-blocking antibody to inhibit αvβ5 in a rat model of renal IRI. Pretreatment with this anti-αvβ5 antibody significantly reduced serum creatinine levels, diminished renal damage detected by histopathologic evaluation, and decreased levels of injury biomarkers...
January 6, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28061889/urinary-exosomal-activating-transcriptional-factor-3-as-the-early-diagnostic-biomarker-for-sepsis-induced-acute-kidney-injury
#9
Tanaporn Panich, Wiwat Chancharoenthana, Poorichaya Somparn, Jiraphorn Issara-Amphorn, Nattiya Hirankarn, Asada Leelahavanichkul
BACKGROUND: An early sepsis-induced acute kidney injury (sepsis-AKI) biomarker is currently in needed. Urinary neutrophil gelatinase-associated lipocalin (uNGAL) is a candidate of sepsis-AKI biomarker but with different cut-point values. Urinary exosomal activating transcriptional factor 3 (uATF3) has been mentioned as an interesting biomarker. METHODS: We conducted experiments in mice and a prospective, multicenter study in patients as a proof of concept that urine exosome is an interesting biomarker...
January 7, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28060212/urinary-mitochondrial-dna-levels-identify-acute-kidney-injury-in-surgical-critical-illness-patients
#10
Qiongyuan Hu, Jianan Ren, Jie Wu, Guanwei Li, Xiuwen Wu, Song Liu, Gefei Wang, Guosheng Gu, Huajian Ren, Zhiwu Hong, Jieshou Li
BACKGROUND: Recent studies showed that mitochondrial injury and mitochondrial DNA (mtDNA) damage are associated with the initiation and progression of acute kidney injury (AKI). However, practical limitations of existing assays of mitochondrial function have limited our ability to study the link between mitochondrial dysfunction and renal injury. Therefore, we evaluated urinary mtDNA (UmtDNA) as a biomarker of AKI in critical illness patients. METHODS: DNA was isolated from urine samples in surgical intensive care unit (SICU) patients and quantified by quantitative polymerase chain reaction (PCR)...
January 4, 2017: Shock
https://www.readbyqxmd.com/read/28056546/urinary-microrna-30c-5p-and-microrna-192-5p-as-potential-biomarkers-of-ischemia-reperfusion-induced-kidney-injury
#11
Yan-Fang Zou, Dan Wen, Qian Zhao, Ping-Yan Shen, Hao Shi, Qiang Zhao, Yong-Xi Chen, Wen Zhang
Early detection of acute kidney injury is difficult due to lack of known biomarkers; previous studies have tried to identify new biomarkers for detecting acute kidney injury at an early stage. MicroRNA, a 21-23 nucleotide noncoding RNA molecule, has emerged as a desirable marker in the diagnosis and prognosis of various diseases. This study aims to identify the expression profile of microRNA in ischemia-reperfusion-induced kidney injury and determine the possibility of using the candidate microRNA as biomarker for the detection of I/R-induced kidney injury...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28053613/diallyl-disulfide-attenuates-acetaminophen-induced-renal-injury-in-rats
#12
Jin-Young Shin, Ji-Hee Han, Je-Won Ko, Sung-Hyeuk Park, Na-Rae Shin, Tae-Yang Jung, Hyun-A Kim, Sung-Hwan Kim, In-Sik Shin, Jong-Choon Kim
This study investigated the protective effects of diallyl disulfide (DADS) against acetaminophen (AAP)-induced acute renal injury in male rats. We also investigated the effects of DADS on kidney injury molecule-1 (KIM-1) and neutrophil gelatinase-associated lipocalin (NGAL), which are novel biomarkers of nephrotoxicity in renal tissues, in response to AAP treatment. The following four experimental groups were evaluated: (1) vehicle control, (2) AAP (1,000 mg/kg), (3) AAP&DADS, and (4) DADS (50 mg/kg/day). AAP treatment caused acute kidney injury evidenced by increased serum blood urea nitrogen (BUN) levels and histopathological alterations...
December 2016: Laboratory Animal Research
https://www.readbyqxmd.com/read/28052631/why-and-how-to-measure-renal-function-in-patients-with-liver-disease
#13
REVIEW
Salvatore Piano, Antonietta Romano, Marco Di Pascoli, Paolo Angeli
Patients with advanced liver disease frequently have impaired renal function. Both acute kidney injury (AKI) and chronic kidney disease (CKD) are quite common in patients with cirrhosis and both are associated with a worse prognosis in these patients. A careful assessment of renal function is highly important in these patients to help physicians determine their diagnosis, prognosis and therapeutic management and to define transplantation strategies (liver transplantation alone vs simultaneous liver and kidney transplantation)...
January 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28049381/kidney-disease-in-puumala-hantavirus-infection
#14
Jukka Mustonen, Tuula Outinen, Outi Laine, Ilkka Pörsti, Antti Vaheri, Satu Mäkelä
Acute kidney injury (AKI) remains a predominant clinical expression of nephropathia epidemica (NE). Its pathogenesis is not yet fully understood. Here, we describe the tissue injury comprehensively and present new data aimed to characterize the injury and explain its pathophysiology. When compared to tubulointerstitial nephritis of a wide variety of other aetiologies, a high degree of proteinuria is a distinguished trait of NE, a finding that is also helpful in the clinical suspicion of the disease. Recently, novel biomarkers for the prediction of severe AKI, including neutrophil gelatinase-associated lipocalin (NGAL), have been identified and ultrastructural tissue changes have been more accurately described...
January 3, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28028135/unique-transcriptional-programs-identify-subtypes-of-aki
#15
Katherine Xu, Paul Rosenstiel, Neal Paragas, Christian Hinze, Xiaobo Gao, Tian Huai Shen, Max Werth, Catherine Forster, Rong Deng, Efrat Bruck, Roger W Boles, Alexandra Tornato, Tejashree Gopal, Madison Jones, Justin Konig, Jacob Stauber, Vivette D'Agati, Hediye Erdjument-Bromage, Subodh Saggi, Gebhard Wagener, Kai M Schmidt-Ott, Nicholas Tatonetti, Paul Tempst, Juan A Oliver, Paolo Guarnieri, Jonathan Barasch
Two metrics, a rise in serum creatinine concentration and a decrease in urine output, are considered tantamount to the injury of the kidney tubule and the epithelial cells thereof (AKI). Yet neither criterion emphasizes the etiology or the pathogenetic heterogeneity of acute decreases in kidney excretory function. In fact, whether decreased excretory function due to contraction of the extracellular fluid volume (vAKI) or due to intrinsic kidney injury (iAKI) actually share pathogenesis and should be aggregated in the same diagnostic group remains an open question...
December 27, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28024933/a-preoperative-multimarker-approach-to-evaluate-acute-kidney-injury-after-cardiac-surgery
#16
Tone B Enger, Hilde Pleym, Roar Stenseth, Guri Greiff, Alexander Wahba, Vibeke Videm
OBJECTIVE: To investigate whether a multimarker strategy combining preoperative biomarkers representing distinct pathophysiologic pathways enhances preoperative risk assessment of acute kidney injury after cardiac surgery (CSA-AKI) and increases knowledge of underlying pathogenesis. DESIGN: Prospective, cohort study. SETTING: Single-center tertiary referral hospital. PARTICIPANTS: The study comprised 1,015 adults undergoing cardiac surgery with cardiopulmonary bypass...
October 11, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28013112/urine-interleukin-18-and-lipocalin-2-are-biomarkers-of-acute-tubular-necrosis-in-patients-with-cirrhosis-a-systematic-review-and-meta-analysis
#17
Jeremy Puthumana, Xavier Ariza, Justin M Belcher, Isabel Graupera, Pere Ginès, Chirag R Parikh
BACKGROUND & AIMS: Acute kidney injury (AKI) is a common complication in patients with cirrhosis that increases mortality. The most common causes of AKI in these patients are prerenal azotemia, acute tubular necrosis (ATN), and hepatorenal syndrome; it is important to determine the etiology of AKI to select the proper treatment and predict patient outcome. Urine biomarkers could be used to differentiate between patients with ATN and functional causes of AKI. We performed a systemic review and meta-analysis of published studies to determine whether urine levels of interleukin 18 (IL18) and lipocalin 2 (LCN2 or NGAL) associate with development of ATN in patients with cirrhosis...
December 21, 2016: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28011057/the-ischemic-nephrotoxic-acute-kidney-injury-and-the-use-of-renal-biomarkers-in-clinical-practice
#18
REVIEW
Michele Andreucci, Teresa Faga, Antonio Pisani, Maria Perticone, Ashour Michael
The term Acute Renal Failure (ARF) has been replaced by the term Acute Kidney Injury (AKI). AKI indicates an abrupt (within 24-48h) decrease in Glomerular Filtraton Rate, due to renal damage, that causes fluid and metabolic waste retention and alteration of electrolyte and acid-base balance. The renal biomarkers of AKI are substances or processes that are indicators of normal or impaired function of the kidney. The most used renal biomarker is still serum creatinine that is inadequate for several reasons, one of which is its inability to differentiate between hemodynamic changes of renal function ("prerenal azotemia") from intrinsic renal failure or obstructive nephropathy...
December 21, 2016: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28003188/insulin-like-growth-factor-binding-protein-7-and-tissue-inhibitor-of-metalloproteinases-2-differential-expression-and-secretion-in-human-kidney-tubule-cells
#19
David R Emlet, Nuria Pastor-Soler, Allison Marciszyn, Xiaoyan Wen, Hernando Gomez, William H Humphries, Seth Morrisroe, Jacob K Volpe, John A Kellum
We have characterized the expression and secretion of the acute kidney injury biomarkers Insulin-Like Growth Factor Binding Protein 7 (IGFBP7) and Tissue Inhibitor of Metalloproteinases-2 (TIMP-2) in human kidney epithelial cells in primary cell culture and tissue. We established cell culture model systems of primary kidney cells of proximal and distal tubule origin and observed that both proteins are indeed expressed and secreted in both tubule cell types in vitro. However, TIMP-2 is both expressed and secreted preferentially by cells of distal tubule origin, while IGFBP7 is equally expressed across tubule cell types yet preferentially secreted by cells of proximal tubule origin...
December 21, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28002875/outcomes-from-massive-paracetamol-overdose-a-retrospective-observational-study
#20
Daniel J B Marks, Paul I Dargan, John R H Archer, Charlotte L Davies, Alison M Dines, David M Wood, Shaun L Greene
AIM: Treatment of paracetamol (acetaminophen) overdose with acetylcysteine is standardised, with dose determined only by patient weight. The validity of this approach for massive overdoses has been questioned. We systematically compared outcomes in massive and non-massive overdoses, to guide whether alternative treatment strategies should be considered, and whether the ratio between measured timed paracetamol concentrations (APAPpl ) and treatment nomogram thresholds at those time points (APAPt ) provides a useful assessment tool...
December 21, 2016: British Journal of Clinical Pharmacology
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