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Acute tubular necrosis

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https://www.readbyqxmd.com/read/27871857/bmi-1-plays-a-critical-role-in-the-protection-from-acute-tubular-necrosis-by-mobilizing-renal-stem-progenitor-cells
#1
Xianhui Lv, Zhenzhen Yu, Chunfeng Xie, Xiuliang Dai, Qing Li, Dengshun Miao, Jianliang Jin
The regeneration of injured tubular cell occurs primarily from intrinsic renal stem/progenitor cells (RSCs) labeled with CD24 and CD133 after acute tubular necrosis (ATN). Bmi-1 plays a crucial role in regulating self-renewal, differentiation and aging of multiple adult stem cells and progenitor cells. Bmi-1 was rapidly elevated in the induction of adult kidney regeneration by renal injury. To determine whether Bmi-1 maintained mobilization of RSCs in the protection from ATN, glycerol-rhabdomyolysis-induced ATN were performed in wild type (WT) and Bmi-1-deficient (Bmi-1(-/-)) mice...
November 18, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27858871/case-report-brincidofovir-induced-reversible-severe-acute-kidney-injury-in-2-solid-organ-transplant-for-treatment-of-cytomegalovirus-infection
#2
Emmanuel Faure, Tatiana Galperine, Olivier Cannesson, Sophie Alain, Viviane Gnemmi, Celine Goeminne, Annie Dewilde, Johana Béné, Mohamed Lasri, Célia Lessore de Sainte Foy, Arnaud Lionet
RATIONALE: Resistant cytomegalovirus-mediated infections are increasing in solid organ recipient with few available alternative treatments. Brincidofovir is an oral broad-spectrum antiviral in development for prevention and treatment of viral infection, particularly cytomegalovirus. PATIENTS CONCERNS: Although brincidofovir is an analogue of cidofovir, previous studies reported no renal toxicity. DIAGNOSES: Here, we report 2 cases of severe tubular necrosis in solid organ recipients, 1 heart and 1 kidney transplant...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27809280/role-of-oxidative-stress-in-drug-induced-kidney-injury
#3
REVIEW
Keiko Hosohata
The kidney plays a primary role in maintaining homeostasis and detoxification of numerous hydrophilic xenobiotics as well as endogenous compounds. Because the kidney is exposed to a larger proportion and higher concentration of drugs and toxins than other organs through the secretion of ionic drugs by tubular organic ion transporters across the luminal membranes of renal tubular epithelial cells, and through the reabsorption of filtered toxins into the lumen of the tubule, these cells are at greater risk for injury...
November 1, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27788793/tissue-expression-of-aquaporin-2-is-correlated-to-urine-output-and-allograft-function-in-sensitized-kidney-transplant-patients
#4
K Klein, S Rübenacker, S M Schaefer, L P Kihm, V Schwenger, S Macher-Goeppinger, P Schemmer, C Süsald, M Zeier, C Morath, L E Becker
BACKGROUND: Salt and water disturbances often occur during acute kidney allograft dysfunction that contribute to graft failure, but this condition has been poorly investigated in the alloreactivity setting. We evaluated the tissue expression of aquaporins (AQP1 and AQP2) and the epithelial sodium channel (ENAC) in kidney biopsy specimens from sensitized kidney transplant recipients. METHODS: Eighty-six biopsy specimens from 33 sensitized patients were divided into 3 groups according to clinical context: time-zero (n = 9), protocol (n = 9), and indication (n = 68)...
October 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27788506/overexpression-of-intrarenal-renin-angiotensin-system-in-human-acute-tubular-necrosis
#5
Wei Cao, Lingwei Jin, Zhanmei Zhou, Manqiu Yang, Chunyi Wu, Liling Wu, Shuang Cui
BACKGROUND/AIMS: Acute tubular necrosis (ATN), a leading cause of acute kidney injury (AKI), is associated with decreased survival and increased progression of chronic kidney disease. A barrier to improving the clinical outcomes is the incomplete understanding of the pathogenesis of AKI. Our objective is to test the hypothesis that intrarenal renin-angiotensin system (RAS) is overexpressed in patients with ATN and could be an indicator of ATN severity. METHODS: A transversal study was conducted in patients with biopsy-proven ATN...
October 28, 2016: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/27758164/curcumin-counteracts-cisplatin-induced-nephrotoxicity-by-preventing-renal-tubular-cell-apoptosis
#6
Yeter Topcu-Tarladacalisir, Melike Sapmaz-Metin, Turan Karaca
Curcumin has several biological functions particularly antioxidant and anti-inflammatory. The aims of this study are determination of the protective effects of curcumin on cisplatin-induced renal tubular cell apoptosis and related pathways in kidney. Eighteen male Wistar albino rats were randomly divided into three groups (n = 6): the control, cisplatin (CP), and cisplatin + curcumin (CP + CUR). Acute renal damage was induced by single dose of cisplatin (7.5 mg/kg) injected by intraperitoneally (i...
October 19, 2016: Renal Failure
https://www.readbyqxmd.com/read/27756181/silencing-hif-1%C3%AE-aggravates-growth-inhibition-and-necrosis-of-proximal-renal-tubular-epithelial-cell-under-hypoxia
#7
Yue Chen, Suhua Jiang, Jianzhou Zou, Yihong Zhong, Xiaoqiang Ding
The kidney is particularly susceptible to ischemia/hypoxia insult while dysfunction of proximal tubular epithelial cells (PTEC) is a primary pathologic hallmark in acute kidney injury. Hypoxia-inducible factor-1 (HIF-1) is a key regulator responsible for cellular hypoxic responses. Therefore, we investigated the effects of HIF-1 suppression, using small interference RNA (siRNA), upon the cell fate of PTEC under hypoxia, and explored the underlying possible molecular mechanism. Hypoxia was induced with hypoxia mimetic cobalt chloride...
October 19, 2016: Renal Failure
https://www.readbyqxmd.com/read/27752245/therapeutic-potential-and-molecular-mechanisms-of-emblica-officinalis-gaertn-in-countering-nephrotoxicity-in-rats-induced-by-the-chemotherapeutic-agent-cisplatin
#8
Salma Malik, Kapil Suchal, Jagriti Bhatia, Sana I Khan, Swati Vasisth, Ameesha Tomar, Sameer Goyal, Rajeev Kumar, Dharamvir S Arya, Shreesh K Ojha
Emblica officinalis Gaertn. belonging to family Euphorbiaceae is commonly known as Indian gooseberry or "Amla" in India. It is used as a 'rejuvenating herb' in traditional system of Indian medicine. It has been shown to possess antioxidant, anti-inflammatory and anti-apoptotic effects. Thus, on the basis of its biological effects, the present study was undertaken to evaluate the protective effect of the dried fruit extract of the E. Officinalis (EO) in cisplatin-induced nephrotoxicity in rats and also to evaluate the mechanism of its nephroprotection...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27747196/shiga-toxin-mediated-neurologic-changes-in-murine-model-of-disease
#9
Suman Pradhan, Christine Pellino, Kayleigh MacMaster, Dennis Coyle, Alison A Weiss
Seizures and neurologic involvement have been reported in patients infected with Shiga toxin (Stx) producing E. coli, and hemolytic uremic syndrome (HUS) with neurologic involvement is associated with more severe outcome. We investigated the extent of renal and neurologic damage in mice following injection of the highly potent form of Stx, Stx2a, and less potent Stx1. As observed in previous studies, Stx2a brought about moderate to acute tubular necrosis of proximal and distal tubules in the kidneys. Brain sections stained with hematoxylin and eosin (H&E) appeared normal, although some red blood cell congestion was observed...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27738777/histopathological-changes-in-septic-acute-kidney-injury-in-critically-ill-children-a-cohort-of-post-mortem-renal-biopsies
#10
Ramachandran Rameshkumar, Sriram Krishnamurthy, Rajesh Nachiappa Ganesh, Subramanian Mahadevan, Parameswaran Narayanan, Ponnarmeni Satheesh, Puneet Jain
BACKGROUND: Septic acute kidney injury (AKI) accounts for more than half of all cases of AKI in critically ill children. The renal histology was found to alter the management in more than two-third of cases of adult acute renal failure. Better insight into the pathogenesis of pediatric septic AKI could be based on developing a clearer appreciation of the histopathological changes. No comprehensive study of the histopathological features of septic AKI in critically ill children has yet been performed...
October 13, 2016: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/27738726/resuscitative-endovascular-balloon-occlusion-of-the-aorta-what-is-the-optimum-occlusion-time-in-an-ovine-model-of-hemorrhagic-shock
#11
V A Reva, Y Matsumura, T Hörer, D A Sveklov, A V Denisov, S Y Telickiy, A B Seleznev, E R Bozhedomova, J Matsumoto, I M Samokhvalov, J J Morrison
PURPOSE: The aim of this study is to evaluate the early survival and organ damage following 30 and 60 min of thoracic resuscitative endovascular balloon occlusion of the aorta (REBOA) in an ovine model of severe hemorrhagic shock. METHODS: Eighteen sheep were induced into shock by undergoing a 35 % controlled exsanguination over 30 min. Animals were randomized into three groups: 60-min REBOA 30 min after the bleeding (60-REBOA), 30-min REBOA 60 min after the bleeding (30-REBOA) and no-REBOA control (n-REBOA)...
October 13, 2016: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/27723622/-severe-spotted-fever-by-rickettsia-rickettsii-in-tourist-in-the-argentine-northwest
#12
Alfredo Seijo, Sergio Giamperetti, Sonia M Ortiz Mayor, María B González, Eugenia S Ortega, Rossana C González
On the fifth day after leaving the Parque Nacional El Rey, province of Salta, Argentina, where she made rural tourism, a woman of Italian origin, aged 47, developed an acute fever followed by a petechial and purpuric rash that progressed rapidly to multiorgan failure. She died on the sixth day after hospitalization. There were references to tick bites and a skin lesion similar to tache noire was found. The autopsy showed generalized vasculitis, ascites, pulmonary edema, acute tubular necrosis and portal centrilobular necrosis...
2016: Medicina
https://www.readbyqxmd.com/read/27720915/validation-of-a-staging-system-for-acute-kidney-injury-in-patients-with-cirrhosis-and-association-with-acute-on-chronic-liver-failure
#13
Patricia Huelin, Salvatore Piano, Elsa Solà, Marialuisa Stanco, Cristina Solé, Rebeca Moreira, Elisa Pose, Silvano Fasolato, Nuria Fabrellas, Glòria de Prada, Chiara Pilutti, Isabel Graupera, Xavier Ariza, Antonietta Romano, Chiara Elia, Andrés Cárdenas, Javier Fernández, Paolo Angeli, Pere Ginès
BACKGROUND & AIMS: In patients with cirrhosis of the liver, acute kidney injury (AKI) is classified into 3 stages. Recent studies indicate that there are 2 subgroups of stage 1 disease, associated with different outcomes and serum levels of creatinine (SCr): stage 1A (SCr <1.5 mg/dL) and stage 1B (SCr ≥1.5 mg/dL). We performed a prospective study to validate, in a large series of patients with cirrhosis, the association between this new description and patient outcomes, and assess the relationship between AKI stage and the presence of acute-on-chronic liver failure...
October 5, 2016: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/27692564/release-of-extracellular-dna-influences-renal-ischemia-reperfusion-injury-by-platelet-activation-and-formation-of-neutrophil-extracellular-traps
#14
Marcel P B Jansen, Diba Emal, Gwendoline J D Teske, Mark C Dessing, Sandrine Florquin, Joris J T H Roelofs
Acute kidney injury is often the result of ischemia reperfusion injury, which leads to activation of coagulation and inflammation, resulting in necrosis of renal tubular epithelial cells. Platelets play a central role in coagulation and inflammatory processes, and it has been shown that platelet activation exacerbates acute kidney injury. However, the mechanism of platelet activation during ischemia reperfusion injury and how platelet activation leads to tissue injury are largely unknown. Here we found that renal ischemia reperfusion injury in mice leads to increased platelet activation in immediate proximity of necrotic cell casts...
September 27, 2016: Kidney International
https://www.readbyqxmd.com/read/27691976/nephropathies-in-the-european-captive-cheetah-acinonyx-jubatus-population
#15
Angelika Url, Verena Krutak, Anna Kübber-Heiss, Sonja Chvala-Mannsberger, Nadia Robert, Nora Dinhopl, Peter Schmidt, Chris Walzer
According to previous studies in captive cheetah ( Acinonyx jubatus ) populations, one of the most threatening diseases besides amyloidosis, myelopathy, veno occlusive disease, and gastritis, is renal failure. Contrary to captive cheetahs in North America and South Africa, morphological data concerning renal lesions in the cheetah European Endangered Species Program (EEP) are lacking. This study details the histological characterization as well as immunohistochemical and morphometrical analysis of nephropathies in 35 captive cheetahs from the EEP, which were necropsied between 1985 and 2003...
September 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/27661757/sepsis-induced-acute-kidney-injury
#16
Hernando Gómez, John A Kellum
PURPOSE OF REVIEW: Sepsis is a common and frequently fatal condition in which mortality has been consistently linked to increasing organ dysfunction. For example, acute kidney injury (AKI) occurs in 40-50% of septic patients and increases mortality six to eight-fold. However, the mechanisms by which sepsis causes organ dysfunction are not well understood and hence current therapy remains reactive and nonspecific. RECENT FINDINGS: Recent studies have challenged the previous notion that organ dysfunction is solely secondary to hypoperfusion, by showing, for example, that AKI occurs in the setting of normal or increased renal blood flow; and that it is characterized not by acute tubular necrosis or apoptosis, but rather by heterogeneous areas of colocalized sluggish peritubular blood flow and tubular epithelial cell oxidative stress...
December 2016: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/27651917/case-report-of-eus-guided-endoscopic-transduodenal-necrosectomy-in-a-patient-with-sleeve-gastrectomy
#17
Avik Sarkar, Ragui Sadek, Matthew Lissauer, Swati Pawa
BACKGROUND: After an acute attack of pancreatitis, walled-off pancreatic fluid collections (PFC) occur in approximately 10 % of cases. Drainage of the cavity is recommended when specific indications are met. Endoscopic drainage has been adopted as the main intervention for symptomatic walled-off PFC. Altered gastric anatomy in these patients poses an interesting challenge. We present the first case of a patient with sleeve gastrectomy who underwent successful endoscopic transduodenal necrosectomy (TDN)...
2016: BMC Obesity
https://www.readbyqxmd.com/read/27600998/resveratrol-attenuates-acute-kidney-injury-by-inhibiting-death-receptor%C3%A2-mediated-apoptotic-pathways-in-a-cisplatin%C3%A2-induced-rat-model
#18
Qiufa Hao, Xiaoyan Xiao, Junhui Zhen, Jinbo Feng, Chun Song, Bei Jiang, Zhao Hu
Acute kidney injury is a clinical syndrome characterized by a loss of renal function and acute tubular necrosis. Resveratrol exerts a wide range of pharmacological effects based on its anti‑inflammatory, antioxidant and cytoprotective properties. The present study aimed to evaluate whether resveratrol attenuates acute kidney injury in a cisplatin‑induced rat model and to investigate the potential mechanisms involved. Rats were randomly divided into four treatment groups: control, cisplatin, resveratrol, and cisplatin plus resveratrol...
October 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27595653/exposure-to-sub-acute-doses-of-fipronil-and-buprofezin-in-combination-or-alone-induces-biochemical-hematological-histopathological-and-genotoxic-damage-in-common-carp-cyprinus-carpio-l
#19
Irfan Zia Qureshi, Asia Bibi, Sana Shahid, Madiha Ghazanfar
Use of pesticides or insecticides can be highly toxic to aquatic life forms due to leaching and agricultural runoff, rains or flood. Fipronil (FP) is a GABA receptor inhibitor, while buprofezin (BPFN) is an insect growth regulator. Presently, we exposed groups of aquaria acclimated carp fish (Cyprinus carpio) for 96h to sub-lethal concentrations of fipronil (400μgL(-1); 9.15×10(-7)molL(-1)) and buprofezin (BPFN, 100mgL(-1); 1.072×10(-6)molL(-1)) singly or in combination. The extent of damage was assessed at biochemical, hematological, molecular biological and histopathological level...
October 2016: Aquatic Toxicology
https://www.readbyqxmd.com/read/27595515/renal-graft-survival-according-to-banff%C3%A2-2013-classification-in-indication-biopsies
#20
Carlos Arias-Cabrales, Dolores Redondo-Pachón, María José Pérez-Sáez, Javier Gimeno, Ignacio Sánchez-Güerri, Sheila Bermejo, Adriana Sierra, Carla Burballa, Marisa Mir, Marta Crespo, Julio Pascual
INTRODUCTION: The impact of acute rejection in kidney graft survival is well known, but the prognosis of other diagnoses is uncertain. We evaluated the frequency and impact on graft survival of different diagnostic categories according to the Banff 2013 classification in a cohort of renal transplant recipients. MATERIAL AND METHODS: Retrospective study of 495 renal biopsies by indication in 322 patients from 1990-2014. Two independent observers reviewed the histological reports, reclassifying according to the Banff 2013 classification...
November 2016: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
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