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https://www.readbyqxmd.com/read/29351418/red-blood-cell-antibody-induced-anemia-causes-differential-degrees-of-tissue-hypoxia-in-kidney-and-brain
#1
Nikhil Mistry, C David Mazer, John G Sled, Alan H Lazarus, Lindsay S Cahill, Max Solish, Yu-Qing Zhou, Nadya Romanova, Alexander Gm Hare, Allan Doctor, Joseph A Fisher, Keith R Brunt, Jeremy A Simpson, Gregory M T Hare
Moderate anemia is associated with increased mortality and morbidity, including acute kidney injury (AKI), in surgical patients. A red blood cell (RBC)-specific antibody model was utilized to determine if moderate subacute anemia could result in tissue hypoxia as a potential mechanism of injury. Cardiovascular and hypoxic cellular responses were measured in transgenic mice capable of expressing hypoxia-inducible factor-1α (HIF-1α)-luciferase activity in vivo. Antibody-mediated anemia was associated with mild intravascular hemolysis (6 hours) and splenic RBC sequestration (day 4), resulting in a nadir hemoglobin concentration of 89{plus minus}13 g/L at day 4...
January 10, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29350876/mechanism-of-mer-receptor-tyrosine-kinase-inhibition-of-glomerular-endothelial-cell-inflammation
#2
Yuxuan Zhen, Fred D Finkelman, Wen-Hai Shao
Endotoxin induces a variety of proinflammatory mediators and plays a crucial role in kidney inflammation. The receptor tyrosine kinase, Mer, diminishes renal inflammation by attenuating inflammatory responses. We previously reported that Mer is predominantly expressed on glomerular endothelial cells (GECs) and that Mer deficiency is associated with increased renal inflammation when mice are challenged with nephrotoxic serum. We consequently hypothesized that Mer signaling down-regulates LPS-driven inflammatory responses in GECs...
January 19, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29340699/long-term-expression-of-glomerular-genes-in-diabetic-nephropathy
#3
Dominik Chittka, Bernhard Banas, Laura Lennartz, Franz Josef Putz, Kathrin Eidenschink, Sebastian Beck, Thomas Stempfl, Christoph Moehle, Simone Reichelt-Wurm, Miriam C Banas
Background: Although diabetic nephropathy (DN) is the most common cause for end-stage renal disease in western societies, its pathogenesis still remains largely unclear. A different gene pattern of diabetic and healthy kidney cells is one of the probable explanations. Numerous signalling pathways have emerged as important pathophysiological mechanisms for diabetes-induced renal injury. Methods: Glomerular cells, as podocytes or mesangial cells, are predominantly involved in the development of diabetic renal lesions...
January 11, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29335722/review-in-adults-contrast-enhanced-ct-is-not-linked-to-acute-kidney-injury-or-mortality-vs-noncontrast-ct
#4
Tejas Patel, Vihas Patel
No abstract text is available yet for this article.
January 16, 2018: Annals of Internal Medicine
https://www.readbyqxmd.com/read/29329828/frequency-and-prognostic-significance-of-acute-kidney-recovery-in-patients-who-underwent-transcatheter-aortic-valve-implantation
#5
Amir Azarbal, Kevin L Leadholm, Takamaru Ashikaga, Richard J Solomon, Harold L Dauerman
Acute kidney injury (AKI) after transcatheter aortic valve implantation (TAVI) is associated with increased mortality. As significant hemodynamic improvement may occur with relief of aortic stenosis, we hypothesized that TAVI patients may demonstrate the opposite phenomena: acute kidney recovery (AKR). We studied the incidence and predictors of AKR in post-TAVI patients. A total of 366 consecutive patients underwent TAVI (January 2012 to January 2017) at a single center. We defined AKR as a 25% improvement in glomerular filtration rate (GFR) at 48 hours after TAVI...
December 13, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29329731/multimodality-imaging-evaluation-before-transcatheter-aortic-valve-implantation-incidence-of-contrast-medium-induced-acute-kidney-injury-risk-factors-and-prognosis
#6
C Schneider, A Brumberg, F C Roller, J Rixe, P Roth, G A Krombach
AIM: To evaluate the incidence, risk factors, and prognostic implications of contrast medium-induced acute kidney injury (CI-AKI) in patients undergoing transcatheter aortic valve implantation (TAVI) evaluation. MATERIALS AND METHODS: Datasets from 98 out of 207 consecutive patients referred for multidetector computed tomography (MDCT) for TAVI evaluation were eligible for evaluation and were analysed retrospectively. The incidence of CI-AKI was correlated to outcome and to potential risk factors: kidney function (estimated glomerular filtration rate [eGFR]), heart failure, diabetes, amount of contrast medium, and duration of examination period...
January 10, 2018: Clinical Radiology
https://www.readbyqxmd.com/read/29329317/oxidative-stress-caused-by-activation-of-nadph-oxidase-4-promotes-contrast-induced-acute-kidney-injury
#7
Bo Young Jeong, Hoi Young Lee, Chang Gyo Park, Jaeku Kang, Seong-Lan Yu, Du-Ri Choi, Seung-Yun Han, Moon Hyang Park, Sungkwon Cho, Soo Young Lee, Won-Min Hwang, Sung-Ro Yun, Hye-Myung Ryu, Eun-Joo Oh, Sun-Hee Park, Yong-Lim Kim, Se-Hee Yoon
Contrast-induced acute kidney injury (CIAKI) is a leading cause of acute kidney injury following radiographic procedures. Intrarenal oxidative stress plays a critical role in CIAKI. Nicotinamide adenine dinucleotide 3-phosphate (NADPH) oxidases (Noxs) are important sources of reactive oxygen species (ROS). Among the various types of Noxs, Nox4 is expressed predominantly in the kidney in rodents. Here, we evaluated the role of Nox4 and benefit of Nox4 inhibition on CIAKI using in vivo and in vitro models. HK-2 cells were treated with iohexol, with or without Nox4 knockdown, or the most specific Nox1/4 inhibitor (GKT137831)...
2018: PloS One
https://www.readbyqxmd.com/read/29322699/contrast-induced-acute-kidney-injury-and-inflammation
#8
EDITORIAL
Kyeong Ho Yun
No abstract text is available yet for this article.
January 2018: Korean Circulation Journal
https://www.readbyqxmd.com/read/29312646/predictive-value-of-post-procedural-early-within-24-h-increase-in-cystatin-c-for-contrast-induced-acute-kidney-injury-and-mortality-following-coronary-angiography-or-intervention
#9
Yong Liu, Kai-Hong Chen, Shi-Qun Chen, Li-Ling Chen, Chong-Yang Duan, Kun Wang, Xiao-Sheng Guo, Hua-Long Li, Wei-Jie Bei, Kai-Yan Lin, Ping-Yan Chen, Ying Xian, Ning Tan, Ying-Ling Zhou, Qing-Shan Geng, Ji-Yan Chen
Objective: To investigate the predictive value of post-procedural early (within 24 h) increase in cystatin C for contrast-induced acute kidney injury (CI-AKI) and all-cause mortality following coronary angiography or intervention. Methods: We prospectively investigated 1042 consecutive patients with both baseline and early post-procedural cystatin C measurement undergoing coronary angiography or intervention. CI-AKI was defined as an increase ≥0.3 mg/dL or >50% in serum creatinine from baseline within 48 h post-procedure...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29304995/meta-analysis-of-culprit-only-versus-multivessel-percutaneous-coronary-intervention-in-patients-with-st-segment-elevation-myocardial-infarction-and-multivessel-coronary-disease
#10
Sripal Bangalore, Bora Toklu, Gregg W Stone
Recently, several randomized controlled trials (RCT) in patients with ST-segment elevation myocardial infarction (STEMI) and multivessel disease (MVD) have compared a strategy of routine multivessel percutaneous coronary intervention (PCI) performed either as a single procedure or as staged procedures to culprit-only PCI. All of these trials have been underpowered for clinical end points. We searched PubMed, Embase, and Cochrane Central Register of Controlled Trials for RCT comparing multivessel PCI with culprit-only PCI in patients with STEMI and MVD...
December 12, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29302904/acute-kidney-injury-in-pregnancy-with-special-reference-to-pregnancy-specific-disorders-a-hospital-based-study-2014-2016
#11
Jai Prakash, Vivek C Ganiger, Suraj Prakash, Mohammad Iqbal, Deba Prasad Kar, Usha Singh, Ashish Verma
INTRODUCTION: There are numerous reports in the literature describing acute kidney injury in pregnancy (P-AKI) due to various obstetric complications. However, there is a dearth of studies on AKI related to pregnancy-specific disorders from India. We aimed to analyze clinical features and outcome of P-AKI related to pregnancy-specific disorders compared to total pregnancy, in India. METHOD: All pregnant women attending the department of Obstetrics and Gynecology from November 2014 to July 2016 were screened for AKI based on: (1) sudden elevation of serum creatinine ≥ 1 mg/dl; (2) oligoanuria for > 12 h; and (3) need for dialysis...
January 4, 2018: Journal of Nephrology
https://www.readbyqxmd.com/read/29283932/glomerular-filtration-rate-is-unchanged-by-ultramarathon
#12
Wojciech Wołyniec, Wojciech Ratkowski, Katarzyna Kasprowicz, Zbigniew Jastrzębski, Sylwia Małgorzewicz, Konrad Witek, Tomasz Grzywacz, Piotr Żmijewski, Marcin Renke
THE MAIN PROBLEM: Acute kidney injury (AKI) is reported as a common complication of marathon and ultramarathon running. In previous studies AKI was diagnosed on the basis of the creatinine level in serum and estimated glomerular filtration rate (eGFR). In the present study we calculated eGFR and also measured creatinine clearance after every 25 km of a 100 km run. METHODS: 20 healthy, amateur runners (males, mean age 40.75 ± 7.15 years, mean weight 76.87 ± 8.39 kg) took part in a 100 km run on a track...
December 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29281937/contrast-induced-acute-kidney-injury-beware-of-the-risk-after-coronary-angiography
#13
Niki Katsiki, Costas Tsioufis, George Hahalis, Vasilios G Athyros
No abstract text is available yet for this article.
December 27, 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/29275837/plasticity-and-heterogeneity-of-th17-in-immune-mediated-kidney-diseases
#14
REVIEW
Christian F Krebs, Ulf Panzer
Anti-neutrophil cytoplasmatic antibody (ANCA)-associated glomerulonephritis, anti-glomerular basement membrane (GBM) glomerulonephritis and lupus nephritis are the most common causes of rapid progressive glomerulonephritis (RPGN) in the Western world. These aggressive forms of autoimmune kidney diseases significantly contribute to end-stage renal disease and are associated with high morbidity and mortality. Moreover, patients show significant heterogeneity with respect to clinical outcome and response to therapy...
December 21, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29275235/endovascular-treatment-of-renal-arterial-perforation-after-blunt-trauma-case-report
#15
Kyoung Hoon Lim, Hun Kyu Ryeom, Jinyoung Park
INTRODUCTION: Isolated renal arterial perforation is a rare consequence of blunt abdominal trauma. Meticulous surgical control of retroperitoneal active bleeding is difficult due to oozing of soft connective tissue, the deep position of operative field, and the presence of friable vascular tissue. Therefore, endovascular treatment is often preferred. PRESENTATION OF CASE: An 83-year-old man was transferred to our trauma center due to retroperitoneal active bleeding after a car accident, in which his right upper abdomen struck the steering wheel...
December 16, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29261551/maximum-allowable-contrast-dose-and-prevention-of-acute-kidney-injury-following-cardiovascular-procedures
#16
Joe Aoun, Diala Nicolas, Jeremiah R Brown, Bertrand L Jaber
PURPOSE OF REVIEW: Contrast-induced acute kidney injury (CI-AKI) is a serious complication. Although nonmodifiable and modifiable risk factors have been thoroughly characterized, the utility of the maximal allowable contrast dose (MACD) has not received adequate attention. The focus of this review is to provide a critical appraisal of this modifiable risk factor. RECENT FINDINGS: Several retrospective and prospective cohort studies have demonstrated that the incidence of CI-AKI among patients receiving contrast media in volumes exceeding the MACD is consistently higher compared with those who do not exceed the MACD (an average of 24 vs...
December 18, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/29251358/acute-kidney-injury-post-transcatheter-aortic-valve-replacement
#17
REVIEW
Pradhum Ram, Kenechukwu Mezue, Gregg Pressman, Janani Rangaswami
Transcatheter aortic valve replacement (TAVR) is a treatment option in high-risk patients with severe aortic stenosis who are not surgical candidates. In light of emerging evidence, it is being increasingly performed even in intermediate-risk patients in recent years. Patients who develop acute kidney injury (AKI) following TAVR are known to have worse outcomes. The objective of this concise review was to identify the prevalence and the impact of AKI following TAVR on patient outcomes by including the most recent literature in our search...
December 18, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/29248992/antibiotics-and-open-fractures-of-the-lower-extremity-less-is-more
#18
B Bankhead-Kendall, T Gutierrez, J Murry, D Holland, V Agrawal, K Almahmoud, C Pearcy, M S Truitt
PURPOSE: Infectious complications in open lower extremity fractures contribute to significant morbidity. Historically, orthopedic guidelines have recommended Grade III fractures receive a first generation cephalosporin and an aminoglycoside. Despite these guidelines, few studies have evaluated the utility of adding an aminoglycoside in this patient population. At our trauma center, we have a unique trauma service where half of our surgeons treat Grade III open fractures with a cephalosporin alone and half use a cephalosporin + aminoglycoside...
December 16, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29248137/epidemiology-of-cardiac-surgery-associated-acute-kidney-injury
#19
REVIEW
Eric A J Hoste, Wim Vandenberghe
Acute kidney injury (AKI) is defined by the KDIGO definition into 3 stages on basis of an increase in serum creatinine or a period of oliguria. AKI is defined as rapid reversal when the episode is 48 h or less. When AKI persists for 7 days or longer, the term acute kidney disease is used. Subclinical AKI is defined by increased concentration of an AKI biomarker, without meeting the KDIGO definition for AKI. In contrast to this, functional AKI is defined by the KDIGO definition, wherein the AKI biomarker concentration is not increased...
September 2017: Best Practice & Research. Clinical Anaesthesiology
https://www.readbyqxmd.com/read/29242970/contrast-associated-acute-kidney-injury-is-a-myth-we-are-not-sure
#20
EDITORIAL
Kianoush Kashani, Adeera Levin, Miet Schetz
No abstract text is available yet for this article.
December 14, 2017: Intensive Care Medicine
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