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https://www.readbyqxmd.com/read/28931758/molecular-characterization-of-the-transition-from-acute-to-chronic-kidney-injury-following-ischemia-reperfusion
#1
Jing Liu, Sanjeev Kumar, Egor Dolzhenko, Gregory F Alvarado, Jinjin Guo, Can Lu, Yibu Chen, Meng Li, Mark C Dessing, Riana K Parvez, Pietro E Cippà, A Michaela Krautzberger, Gohar Saribekyan, Andrew D Smith, Andrew P McMahon
Though an acute kidney injury (AKI) episode is associated with an increased risk of chronic kidney disease (CKD), the mechanisms determining the transition from acute to irreversible chronic injury are not well understood. To extend our understanding of renal repair, and its limits, we performed a detailed molecular characterization of a murine ischemia/reperfusion injury (IRI) model for 12 months after injury. Together, the data comprising RNA-sequencing (RNA-seq) analysis at multiple time points, histological studies, and molecular and cellular characterization of targeted gene activity provide a comprehensive profile of injury, repair, and long-term maladaptive responses following IRI...
September 21, 2017: JCI Insight
https://www.readbyqxmd.com/read/28923914/new-ultrasound-techniques-promise-further-advances-in-aki-and-ckd
#2
REVIEW
Travis D Hull, Anupam Agarwal, Kenneth Hoyt
AKI and CKD are important clinical problems because they affect many patients and the associated diagnostic and treatment paradigms are imperfect. Ultrasound is a cost-effective, noninvasive, and simple imaging modality that offers a multitude of means to improve the diagnosis, monitoring, and treatment of both AKI and CKD, especially considering recent advances in this technique. Ultrasound alone can attenuate AKI and prevent CKD by stimulating the splenic cholinergic anti-inflammatory pathway. Additionally, microbubble contrast agents are improving the sensitivity and specificity of ultrasound for diagnosing kidney disease, especially when these agents are conjugated to ligand-specific mAbs or peptides, which make the dynamic assessment of disease progression and response to treatment possible...
September 18, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28903407/mir-331-3p-and-aurora-kinase-inhibitor-ii-co-treatment-suppresses-prostate-cancer-tumorigenesis-and-progression
#3
Michael R Epis, Keith M Giles, Dianne J Beveridge, Kirsty L Richardson, Patrick A Candy, Lisa M Stuart, Jacqueline Bentel, Ronald J Cohen, Peter J Leedman
RNA-based therapeutics could represent a new avenue of cancer treatment. miRNA 331-3p (miR-331-3p) is implicated in prostate cancer (PCa) as a putative tumor suppressor, but its functional activity and synergy with other anti-tumor agents is largely unknown. We found miR-331-3p expression in PCa tumors was significantly decreased compared to non-malignant matched tissue. Analysis of publicly available PCa gene expression data sets showed miR-331-3p expression negatively correlated with Gleason Score, tumor stage, lymph node involvement and PSA value, and was significantly down regulated in tumor tissue relative to normal prostate tissue...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28902231/risk-factors-for-the-progression-of-chronic-kidney-disease-after-acute-kidney-injury
#4
Benedito Jorge Pereira, Silvana Barreto, Thais Gentil, Larissa S Assis, Emília Md Soeiro, Isac de Castro, Sandra M Laranja
Introduction: The incidence of chronic kidney disease (CKD) is increasing with the increasing age of the population and the increasing number of elderly survivors of acute kidney injury (AKI). The risk factors for the progression of CKD after AKI are unclear. Objective: To investigate the association between AKI and its progression to CKD and the risk factors involved. Methods: An observational, retrospective study of AKI patients followed from 2009 to 2012 was carried out...
August 28, 2017: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/28884034/snakebite-induced-thrombotic-microangiopathy-leading-to-renal-cortical-necrosis
#5
Ying Mao Gn, Arvind Ponnusamy, Vikram Thimma
Renal complications from snakebite result in high mortality and morbidity. Acute kidney injury (AKI) occurs in 5-30% of cases. Renal manifestation could include acute tubular necrosis, cortical necrosis, interstitial nephritis, glomerulonephritis, and vasculitis. We present a case of thrombotic microangiopathy (TMA) resulting in renal cortical necrosis. Renal biopsy showed fibrin thrombi in glomeruli and arterioles with cortical necrosis. Our patient progressed to end-stage renal disease.
2017: Case Reports in Nephrology
https://www.readbyqxmd.com/read/28882170/prognostic-value-of-platelet-to-lymphocyte-ratios-among-critically-ill-patients-with-acute-kidney-injury
#6
Chen-Fei Zheng, Wen-Yue Liu, Fang-Fang Zeng, Ming-Hua Zheng, Hong-Ying Shi, Ying Zhou, Jing-Ye Pan
BACKGROUND: Inflammation plays an important role in the initiation and progression of acute kidney injury (AKI). However, evidence regarding the prognostic effect of the platelet-to-lymphocyte ratio (PLR), a novel systemic inflammation marker, among patients with AKI is scarce. In this study, we investigated the value of the PLR in predicting the outcomes of critically ill patients with AKI. METHODS: Patient data were extracted from the Multiparameter Intelligent Monitoring in Intensive Care Database III version 1...
September 8, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28882126/predictors-of-acute-renal-injury-study-paris-among-hiv-positive-individuals-design-and-methods
#7
Celia P Corona-Villalobos, Michael G Shlipak, Adrienne Tin, Chirag Parikh, Richard D Moore, Eric Vittinghoff, Jose Manuel Monroy-Trujillo, Mohamed G Atta, Michelle M Estrella
BACKGROUND: Acute kidney injury (AKI), which is common among HIV-positive individuals, may contribute to the excess burden of chronic kidney disease (CKD) in this patient population; however, conventional clinical methods to detect AKI do not capture kidney injury sufficiently early to prevent irreversible damage. Further, large observational and interventional studies of AKI generally exclude HIV-positive persons in spite of their disproportionate risk. METHODS: The Predictors of Acute Renal Injury Study (PARIS) is a prospective observational cohort study among HIV-positive individuals established to determine the ability of candidate kidney injury biomarkers to predict future hospitalized clinical AKI, to characterize hospitalized subclinical AKI, and to discern the risk of progressive kidney disease following subclinical and clinical AKI...
September 7, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28881791/dipeptidyl-peptidase-4-inhibitor-use-is-associated-with-a-lower-risk-of-incident-acute-kidney-injury-in-patients-with-diabetes
#8
Chia-Ter Chao, Jui Wang, Hon-Yen Wu, Kuo-Liong Chien, Kuan-Yu Hung
OBJECTIVES: Dipeptidyl peptidase 4 inhibitor (DPP4i) use potentially slows the progression of diabetic kidney disease, but its effects on the risk of acute kidney injury (AKI) are unclear. We aimed to assess the association between DPP4i use and incident AKI episodes from a nationally representative cohort in Taiwan. MATERIALS AND METHODS: All patients newly diagnosed with diabetes mellitus (DM) between 2008, when DPP4i use was first approved in Taiwan, and mid-2013 were enrolled...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28872780/impaired-renal-function-affects-clinical-outcomes-and-management-of-patients-with-heart-failure
#9
Rebeka Jenkins, Lilly Mandarano, Saraniga Gugathas, Juan Carlos Kaski, Lisa Anderson, Debasish Banerjee
AIMS: Inpatients with heart failure and renal impairment have poor outcomes and variable quality of care. We investigate treatment practice and outcomes in an unselected real-world cohort using historical creatinine measurements. METHODS AND RESULTS: Admissions between 1/4/2013 and 30/4/2015 diagnosed at discharge with heart failure were retrospectively analysed. Stages of chronic kidney disease (CKD) and acute kidney injury (AKI) were calculated from creatinine at discharge and 3-12 months before admission...
September 5, 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28855996/comparative-investigation-of-the-anti-emetic-effects-of-granisetron-and-palonosetron-during-the-treatment-of-acute-myeloid-leukemia
#10
Aki Matsumaru, Yutaka Tsutsumi, Shinichi Ito
Chemotherapy-induced nausea and vomiting has a considerable negative impact on the quality of life of patients with cancer. Unfortunately, there has been little progress in the development of supportive therapies for the anti-emetic treatment of patients with hematopoietic tumors. This lack of supportive treatments motivated the present retrospective comparison between two groups of anti-emetic drugs. The current study aimed to compare granisetron and palonosetron in order to determine which is more effective, based on cases of patients undergoing remission induction therapy and consolidation therapy for the treatment of acute myeloid leukemia...
October 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28852062/farnesoid-x-receptor-activation-protects-the-kidney-from-ischemia-reperfusion-damage
#11
Zhibo Gai, Lei Chu, Zhenqiang Xu, Xiaoming Song, Dongfeng Sun, Gerd A Kullak-Ublick
Farnesoid X receptor (FXR) activation has been reported to reduce inflammation and oxidative stress. Because both inflammation and oxidative stress are critical for tissue destruction during kidney ischemia reperfusion (I/R) injury, we investigated the protective role of FXR against kidney damage induced by I/R in mice. Mice undergoing renal I/R developed the typical features of acute kidney injury (AKI): increased creatinine, albuminuria, tubular necrosis and apoptosis. Inflammatory cytokine production and oxidative stress were also markedly increased...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28842217/cytoskeleton-related-regulation-of-primary-cilia-shortening-mediated-by-melanin-concentrating-hormone-receptor-1
#12
Sakura Tomoshige, Yuki Kobayashi, Kosuke Hosoba, Akie Hamamoto, Tatsuo Miyamoto, Yumiko Saito
Primary cilia are specialized microtubule-based organelles. Their importance is highlighted by the gamut of ciliary diseases associated with various syndromes including diabetes and obesity. Primary cilia serve as signaling hubs through selective interactions with ion channels and conventional G-protein-coupled receptors (GPCRs). Melanin-concentrating hormone (MCH) receptor 1 (MCHR1), a key regulator of feeding, is selectively expressed in neuronal primary cilia in distinct regions of the mouse brain. We previously found that MCH acts on ciliary MCHR1 and induces cilia shortening through a Gi/o-dependent Akt pathway with no cell cycle progression...
August 23, 2017: General and Comparative Endocrinology
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
#13
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/28840836/predictive-ability-of-circulating-osteoprotegerin-as-a-novel-biomarker-for-early-detection-of-acute-kidney-injury-induced-by-sepsis
#14
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/28834376/nephropathies
#15
EDITORIAL
Anika Westphal, Stefanie Reuter, Ralf Mrowka
Origins and progresses of nephropathies are manifold and include inflammatory or non-inflammatory causes. The incidence of nephropathies increases all over the world, supported by the growing elderly population. Nowadays there are about two million fatalities per year due to acute kidney injury (AKI) (1) . Clinical outcomes of AKI have not improved over the past 50 years (2) . Renal tissue hypoperfusion and hypoxia are thought to be the main elements causing AKI and the progression to chronic kidney disease (CKD) and end stage renal disease (ESRD) (1) ...
August 18, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28832640/restored-nitric-oxide-bioavailability-reduces-the-severity-of-acute-to-chronic-transition-in-a-mouse-model-of-aristolochic-acid-nephropathy
#16
Inès Jadot, Vanessa Colombaro, Blanche Martin, Isabelle Habsch, Olivia Botton, Joëlle Nortier, Anne-Emilie Declèves, Nathalie Caron
Aristolochic Acid (AA) nephropathy (AAN) is a progressive tubulointerstitial nephritis characterized by an early phase of acute kidney injury (AKI) leading to chronic kidney disease (CKD). The reduced nitric oxide (NO) bioavailability reported in AAN might contribute to renal function impairment and progression of the disease. We previously demonstrated that L-arginine (L-Arg) supplementation is protective in AA-induced AKI. Since the severity of AKI may be considered a strong predictor of progression to CKD, the present study aims to assess the potential benefit of L-Arg supplementation during the transition from the acute phase to the chronic phase of AAN...
2017: PloS One
https://www.readbyqxmd.com/read/28817669/the-association-between-renal-recovery-after-acute-kidney-injury-and-long-term-mortality-after-transcatheter-aortic-valve-replacement
#17
Charat Thongprayoon, Wisit Cheungpasitporn, Narat Srivali, Wonngarm Kittanamongkolchai, Ankit Sakhuja, Kevin L Greason, Kianoush B Kashani
BACKGROUND: This study aimed to examine the association between renal recovery status at hospital discharge after acute kidney injury (AKI) and long-term mortality following transcatheter aortic valve replacement (TAVR). METHODS: We screened all adult patients who survived to hospital discharge after TAVR for aortic stenosis at a quaternary referral medical center from January 1, 2008, through June 30, 2014. An AKI was defined as an increase in serum creatinine level of 0...
2017: PloS One
https://www.readbyqxmd.com/read/28814591/spleno-renal-artery-transposition-in-a-solitary-functioning-kidney-for-treatment-resistant-hypertension-and-acute-kidney-injury
#18
Subash Somalanka, Fiona E Harris, Eric Chemla, Rebecca Jo Suckling, Pauline A Swift
Renal Artery Stenosis (RAS) is an important cause of treatment-resistant hypertension. Uncontrolled hypertension with RAS can cause progressive chronic kidney disease (CKD) leading to end-stage kidney disease. Therapeutic revascularisation can be helpful in appropriate circumstances where pharmaceutical intervention has failed and significant renovascular disease contributes to resistant hypertension. We present an interesting case of a Caucasian male with peripheral vasculopathy, abdominal aortic aneurysm (AAA), single functioning kidney and ostial RAS caused by stent struts from an endovascular AAA stent graft...
August 16, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28807932/reducing-inflammatory-cytokine-production-from-renal-collecting-duct-cells-by-inhibiting-gata2-ameliorates-acute-kidney-injury
#19
Lei Yu, Takashi Moriguchi, Hiroshi Kaneko, Makiko Hayashi, Atsushi Hasegawa, Masahiro Nezu, Hideyuki Saya, Masayuki Yamamoto, Ritsuko Shimizu
Acute kidney injury (AKI) is a leading cause of chronic kidney disease. Proximal tubules are considered to be the primary origin of pathogenic inflammatory cytokines in AKI. However, it remains unclear whether other cell types, including collecting duct (CD) cells, participate in inflammatory processes. The transcription factor GATA2 is specifically expressed in CD cells and maintains their cellular identity. To explore the pathophysiological function of GATA2 in AKI, we generated renal tubular cell-specific Gata2 deletion (G2CKO) mice and examined their susceptibility to ischemia-reperfusion injury (IRI)...
August 14, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28804120/mitochondrial-energetics-in-the-kidney
#20
REVIEW
Pallavi Bhargava, Rick G Schnellmann
The kidney requires a large number of mitochondria to remove waste from the blood and regulate fluid and electrolyte balance. Mitochondria provide the energy to drive these important functions and can adapt to different metabolic conditions through a number of signalling pathways (for example, mechanistic target of rapamycin (mTOR) and AMP-activated protein kinase (AMPK) pathways) that activate the transcriptional co-activator peroxisome proliferator-activated receptor-γ co-activator 1α (PGC1α), and by balancing mitochondrial dynamics and energetics to maintain mitochondrial homeostasis...
October 2017: Nature Reviews. Nephrology
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