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Sepsis induced acute kidney injury

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https://www.readbyqxmd.com/read/28994737/anti-inflammatory-pyranochalcone-derivative-attenuates-lps-induced-acute-kidney-injury-via-inhibiting-tlr4-nf-%C3%AE%C2%BAb-pathway
#1
Min Shi, Xiaoxi Zeng, Fan Guo, Rongshuang Huang, Yanhuan Feng, Liang Ma, Li Zhou, Ping Fu
Treatment of septic acute kidney injury (AKI) has still been beyond satisfaction, although anti-inflammatory therapy is beneficial for sepsis-induced AKI. Compound 5b was derived from natural pyranochalcones and exhibited potent anti-inflammatory activity in adjuvant-induced arthritis. In this study, we aimed to investigate the renoprotective effects and potential mechanism of 5b against lipopolysaccharide (LPS)-induced AKI. C57BL/6 mice and human renal proximal tubule cell line (HK-2 cell) were treated with LPS, respectively...
October 10, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28979774/early-detection-of-acute-cisplatin-nephrotoxicity-interest-of-urinary-monitoring-of-proximal-tubular-biomarkers
#2
Valérian Bunel, Yasmina Tournay, Thomas Baudoux, Eric De Prez, Marie Marchand, Zita Mekinda, Raphaël Maréchal, Thierry Roumeguère, Marie-Hélène Antoine, Joëlle L Nortier
BACKGROUND: Renal toxicity induced by cisplatin (CisPt) is a clinical issue in patients with or without chronic kidney disease (CKD). Proximal tubular injury can result in acute kidney injury (AKI), which may compromise the course of chemotherapy and the prognosis. The purpose of this study was to investigate the time course of urinary markers of acute tubulotoxicity and to assess the usefulness of such monitoring in a routine clinical setting. METHODS: This work is an open prospective pilot study carried out among 23 patients receiving a platinum-based chemotherapy...
October 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28962150/inhibition-of-aldh2-expression-aggravates-renal-injury-in-a-rat-sepsis-syndrome-model
#3
Jun-Feng Hu, Hua-Xue Wang, Hui-Hui Li, Jie Hu, Ying Yu, Qin Gao
Mitochondrial aldehyde dehydrogenase 2 (ALDH2) is closely associated with organ injury. The aim of the present study was to investigate the change of ALDH2 expression in a rat model of sepsis-induced acute renal injury, and to observe the effect of ALDH2 inhibition on the kidney. A model of sepsis syndrome was established in Sprague-Dawley (SD) rats by cecal ligation and puncture (CLP). The rats were divided into sham, CLP and CLP + cyanamide (CYA, an ALDH2 inhibitor) groups. The hemodynamic parameters heart rate (HR) and mean arterial blood pressure (MABP) were measured...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28953574/role-of-m2-macrophages-in-sepsis-induced-acute-kidney-injury
#4
Li Xing, Mu Genhua, Song Chunmei, Zhou Liangliang, He Lei, Jin Qin, Lu Zhongqian
BACKGROUND: Sepsis is a major cause of acute kidney injury (AKI), with high rates of morbidity and mortality. M2 macrophages have been shown to play important roles in the secretion of anti-inflammatory and tissue repair mediators. In this study, we investigate the role of M2 macrophages in sepsis-induced AKI by depleting these cells in vivo through the systemic administration of liposomal clodronate (LC). METHODS: Male Sprague-Dawley rats were subjected to cecal ligation and puncture (CLP) or sham surgery...
September 26, 2017: Shock
https://www.readbyqxmd.com/read/28878224/mild-intracellular-acidification-by-dexamethasone-attenuates-mitochondrial-dysfunction-in-a-human-inflammatory-proximal-tubule-epithelial-cell-model
#5
T J J Schirris, J Jansen, M Mihajlovic, L P van den Heuvel, R Masereeuw, F G M Russel
Septic acute kidney injury (AKI) associates with poor survival rates and often requires renal replacement therapy. Glucocorticoids may pose renal protective effects in sepsis via stimulation of mitochondrial function. Therefore, we studied the mitochondrial effects of dexamethasone in an experimental inflammatory proximal tubule epithelial cell model. Treatment of human proximal tubule epithelial cells with lipopolysaccharide (LPS) closely resembles pathophysiological processes during endotoxaemia, and led to increased cytokine excretion rates and cellular reactive oxygen species levels, combined with a reduced mitochondrial membrane potential and respiratory capacity...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28842112/rcr-audit-of-compliance-with-uk-guidelines-for-the-prevention-and-detection-of-acute-kidney-injury-in-adult-patients-undergoing-iodinated-contrast-media-injections-for-ct
#6
L H Cope, K J Drinkwater, D C Howlett
AIM: To determine radiology departmental compliance with current UK guidance on contrast-induced acute kidney injury (CI-AKI) and to provide data on the incidence of clinically significant post-contrast AKI (PC-AKI) in computed tomography (CT) practice. MATERIALS AND METHODS: A questionnaire was sent to all UK acute National Health Service (NHS) providers (NHS boards in Scotland, local health boards in Wales, NHS trusts in England and health and social care trusts in Northern Ireland) to assess compliance of provider protocols with current UK guidelines for the prevention, recognition, and management of CI-AKI...
August 22, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28841902/markers-of-acute-kidney-injury-in-patients-with-sepsis-the-role-of-soluble-thrombomodulin
#7
Shinshu Katayama, Shin Nunomiya, Kansuke Koyama, Masahiko Wada, Toshitaka Koinuma, Yuya Goto, Ken Tonai, Jun Shima
BACKGROUND: Endothelial activation and damage occur early during sepsis, with activated coagulopathy and playing a major role in the pathophysiology of sepsis-induced acute kidney injury (AKI). The aim of this study was to compare the various biomarkers of endothelial injury with the biomarkers of coagulation and inflammation and to determine a significant predictor of AKI in patients with sepsis. METHODS: We conducted a single-center, retrospective, observational study on patients with sepsis fulfilling the Third International Consensus Definitions for Sepsis and Septic Shock criteria admitted to an adult intensive care unit (ICU) at a university hospital from June 2011 to December 2016...
August 25, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28840836/predictive-ability-of-circulating-osteoprotegerin-as-a-novel-biomarker-for-early-detection-of-acute-kidney-injury-induced-by-sepsis
#8
Mona Schaalan, Waleed Mohamed
Though significant progress has been made towards new diagnostic approaches for early detection of acute kidney injury (AKI) induced by different factors, there is still an urgent demand for a more specific and predictive biomarker for each type. The aim of this study is to unravel the potential diagnostic utility of circulating osteoprotegerin (OPG) in septic patients who developed AKI in the ICU, compared to cystatin C (a renal function maker) and KIM-1 (a kidney damage marker). Eighty patients (male = 43, female = 37) with ages ranging from 42 to 46 years and with sepsis, 40 of whom developed AKI, and 30 healthy controls were enrolled in this prospective study...
June 1, 2017: European Cytokine Network
https://www.readbyqxmd.com/read/28821165/mirna-21-has-effects-to-protect-kidney-injury-induced-by-sepsis
#9
Dian Fu, Jie Dong, Ping Li, Chaopeng Tang, Wen Cheng, Zhenyu Xu, Wenquan Zhou, Jingping Ge, Chen Xia, Zhengyu Zhang
To investigate the miRNA-21 over-expression in the acute kidney injury induced by sepsis, we developed a sepsis induced in vitro model by lip polysaccharide (LPS) and in vovo model by cecal ligation and puncture (CLP) surgery. LPS or CLP surgery induced kidney cell apoptosis increasing. However, the kidney injury indexes of miRNA groups which were transfected with miRNA-21 were significantly suppressed. In further study, the relative proteins expressions were evaluated to explain the miRNA-21 mechanism to improve sepsis induced kidney cell apoptosis...
October 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28777197/elabela-improves-cardio-renal-outcome-in-fatal-experimental-septic-shock
#10
David Coquerel, Frédéric Chagnon, Xavier Sainsily, Lauralyne Dumont, Alexandre Murza, Jérôme Côté, Robert Dumaine, Philippe Sarret, Éric Marsault, Dany Salvail, Mannix Auger-Messier, Olivier Lesur
OBJECTIVES: Apelin-13 was recently proposed as an alternative to the recommended β-adrenergic drugs for supporting endotoxin-induced myocardial dysfunction. Since Apelin-13 signals through its receptor (Apelin peptide jejunum) to exert singular inotropic/vasotropic actions and to optimize body fluid balance, this candidate pathway might benefit septic shock management. Whether the newly discovered ELABELA (ELA), a second endogenous ligand of the Apelin peptide jejunum receptor highly expressed in the kidney, further improves cardio-renal impairment remains unknown...
November 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28757259/endotoxemia-induces-lung-brain-coupling-and-multi-organ-injury-following-cerebral-ischemia-reperfusion
#11
Nguyen Mai, Landa Prifti, Aric Rininger, Hannah Bazarian, Marc W Halterman
Post-ischemic neurodegeneration remains the principal cause of mortality following cardiac resuscitation. Recent studies have implicated gastrointestinal ischemia in the sepsis-like response associated with the post-cardiac arrest syndrome (PCAS). However, the extent to which the resulting low-grade endotoxemia present in up to 86% of resuscitated patients affects cerebral ischemia-reperfusion injury has not been investigated. Here we report that a single injection of low-dose lipopolysaccharide (50μg/kg, IP) delivered after global cerebral ischemia (GCI) induces blood-brain barrier permeability, microglial activation, cortical injury, and functional decline in vivo, compared to ischemia alone...
November 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28686196/protective-role-for-antioxidants-in-acute-kidney-disease
#12
REVIEW
Joanne M Dennis, Paul K Witting
Acute kidney injury causes significant morbidity and mortality in the community and clinic. Various pathologies, including renal and cardiovascular disease, traumatic injury/rhabdomyolysis, sepsis, and nephrotoxicity, that cause acute kidney injury (AKI), induce general or regional decreases in renal blood flow. The ensuing renal hypoxia and ischemia promotes the formation of reactive oxygen species (ROS) such as superoxide radical anions, peroxides, and hydroxyl radicals, that can oxidatively damage biomolecules and membranes, and affect organelle function and induce renal tubule cell injury, inflammation, and vascular dysfunction...
July 7, 2017: Nutrients
https://www.readbyqxmd.com/read/28685720/effect-of-platelet-derived-p-selectin-on-neutrophil-recruitment-in-a-mouse-model-of-sepsis-induced-acute-kidney-injury
#13
Xiu-Hua Li, Yong-Bing Qian, Xiao-Xiao Meng, Rui-Lan Wang
BACKGROUND: Acute kidney injury (AKI) is a severe disease in critically ill patients. Neutrophil infiltration into kidney was associated with the development of AKI, and P-selectin may be involved in the process of neutrophil recruitment in kidney. This study aimed to explore the potential effect of platelet-derived P-selectin on neutrophil recruitment in a mouse model of sepsis-induced AKI. METHODS: A total of 30 C57BL/6 male mice were divided into five groups (n = 6 in each): sham group, sepsis group, anti-Ly6G group, anti-P-selectin group, and platelet depletion group...
July 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28679339/characteristics-of-a-pseudomonas-aeruginosa-induced-porcine-sepsis-model-for-multi-organ-metabolic-flux-measurements
#14
Gabriella A M Ten Have, Renske C I Deutz, Mariëlle P K J Engelen, Robert R Wolfe, Nicolaas E P Deutz
Survival of sepsis is related to loss of muscle mass. Therefore, it is imperative to further define and understand the basic alterations in nutrient metabolism in order to improve targeted sepsis nutritional therapies. We developed and evaluated a controlled hyperdynamic severe sepsis pig model that can be used for in vivo multi-organ metabolic studies in a conscious state. In this catheterized pig model, bacteremia was induced intravenously with 10(9) CFU/h Pseudomonas aeruginosa (PA) in 13 pigs for 18 h...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/28676904/differences-in-cvvh-vs-cvvhdf-in-the-management-of-sepsis-induced-acute-kidney-injury-in-critically-ill-patients
#15
Vedran Premuzic, Nikolina Basic-Jukic, Bojan Jelakovic, Petar Kes
We hypothesized that patients with sepsis and AKI, especially patients without preserved renal function, and treated with continuous veno-venous hemodiafiltration (CVVHDF), have lower risk for mortality than patients treated with continuous veno-venous hemofiltration (CVVH). Patients were included if they fulfilled the diagnosis of severe sepsis or septic shock, suffered AKI and received continuous renal replacement therapy (CRRT) in intensive care unit. There were 62 patients treated by CVVH and 75 treated by CVVHDF...
July 4, 2017: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/28667502/lysophosphatidic-acid-protects-against-endotoxin-induced-acute-kidney-injury
#16
Koryun Mirzoyan, Colette Denis, Audrey Casemayou, Marion Gilet, Dimitri Marsal, Dominique Goudounéche, Stanislas Faguer, Jean-Loup Bascands, Joost P Schanstra, Jean-Sébastien Saulnier-Blache
Septic shock is the most common cause of acute kidney injury (AKI), but the underlying mechanisms remain unclear and no targeted therapies exist. Lysophosphatidic acid (LPA) is a bioactive lipid which in vivo administration was reported to mitigate inflammation and injuries caused by bacterial endotoxemia in the liver and lung. The objective of the present study was to determine whether LPA can protect against sepsis-associated AKI. C57BL/6 mice were treated with LPA 18:1 (5 mg/kg, i.p.) 1 h before being injected with the endotoxin lipopolysaccharide (LPS), and AKI was evaluated after 24 h...
June 30, 2017: Inflammation
https://www.readbyqxmd.com/read/28637971/esculentoside-a-ameliorates-cecal-ligation-and-puncture-induced-acute-kidney-injury-in-rats
#17
Guodong Sun, Wei Yang, Yang Zhang, Mingyan Zhao
Esculentoside A (EsA), a saponin isolated from Phytolacca esculenta, can attenuate acute liver and lung injury. However, whether EsA has a protective effect against sepsis-induced acute kidney injury (AKI) has not been reported. In this study, EsA (2.5, 5, or 10 mg/kg) was given to rats with sepsis induced by cecal ligation and puncture (CLP). We found that EsA improved the survival of septic rats in a dose-dependent manner. In addition, EsA lowered the kidney tubular damage score and decreased blood urea nitrogen and creatinine...
June 22, 2017: Experimental Animals
https://www.readbyqxmd.com/read/28601327/milk-fat-globule-epidermal-growth-factor-factor-viii-attenuates-sepsis-induced-acute-kidney-injury
#18
Cindy Cen, Monowar Aziz, Weng-Lang Yang, Mian Zhou, Jeffrey M Nicastro, Gene F Coppa, Ping Wang
BACKGROUND: Acute kidney injury (AKI) is most commonly caused by sepsis in critically ill patients, and it is associated with high morbidity and mortality. The pathophysiology of sepsis-induced AKI is generally accepted to include direct inflammatory injury, endothelial cell dysfunction, and apoptosis. Milk fat globule-epidermal growth factor-factor VIII (MFG-E8) is a secretory glycoprotein with a known role in the enhancement of apoptotic cell clearance and regulation of inflammation...
June 1, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28569136/molecular-differences-in-susceptibility-of-the-kidney-to-sepsis-induced-kidney-injury
#19
Martin Matejovic, Lenka Valesova, Jan Benes, Roman Sykora, Roman Hrstka, Jiri Chvojka
BACKGROUND: Septic acute kidney injury affects 40-50% of all septic patients. Molecular differences between septic patients with and without acute kidney injury (AKI) are only poorly understood. Here, we investigated gene expression changes that differentiated the subjects who developed septic AKI from those who did not and coupled this approach with traditional parameters of renal physiology. METHODS: In 15 anesthetized, mechanically ventilated and instrumented pigs, progressive sepsis was induced either by peritonitis or by continuous intravenous infusion of Pseudomonas aeruginosa...
May 31, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28545475/urinary-neprilysin-in-the-critically-ill-patient
#20
Sahra Pajenda, Karl Mechtler, Ludwig Wagner
BACKGROUND: Critically ill patients in intensive care face hazardous conditions. Among these, acute kidney injury (AKI) is frequently seen as a result of sepsis. Early diagnosis of kidney injury is of the utmost importance in the guidance of interventions or avoidance of treatment-induced kidney injury. On these grounds, we searched for markers that could indicate proximal tubular cell injury. METHODS: Urine samples of 90 patients admitted to the intensive or intermediate care unit were collected over 2 to 5 days...
May 25, 2017: BMC Nephrology
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