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Kidney ischemia/reperfusion

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https://www.readbyqxmd.com/read/29456238/remote-ischemic-postconditioning-ripc-of-the-upper-arm-results-in-protection-from-cardiac-ischemia-reperfusion-injury-following-primary-percutaneous-coronary-intervention-pci-for-acute-st-segment-elevation-myocardial-infarction-stemi
#1
Bangming Cao, Haipeng Wang, Chi Zhang, Ming Xia, Xiangjun Yang
BACKGROUND The aim of this study was to evaluate the role of remote ischemic postconditioning (RIPC) of the upper arm on protection from cardiac ischemia-reperfusion injury following primary percutaneous coronary intervention (PCI) in patients with acute ST-segment elevation myocardial infarction (STEMI). MATERIAL AND METHODS Eighty patients with STEMI were randomized into two groups: primary PCI (N=44) and primary PCI+RIPC (N=36). RIPC consisted of four cycles of 5 minutes of occlusion and five minutes of reperfusion by cuff inflation and deflation of the upper arm, commencing within one minute of the first PCI balloon dilatation...
February 19, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29454770/molecular-imaging-of-apoptosis-in-ischemia-reperfusion-injury-with-radiolabeled-duramycin-targeting-phosphatidylethanolamine-effective-target-uptake-and-reduced-nontarget-organ-radiation-burden
#2
Hideki Kawai, Farhan Chaudhry, Aditya Shekhar, Artiom Petrov, Takehiro Nakahara, Takashi Tanimoto, Dongbin Kim, Jiqiu Chen, Djamel Lebeche, Francis G Blankenberg, Koon Y Pak, Frank D Kolodgie, Renu Virmani, Partho Sengupta, Navneet Narula, Roger J Hajjar, Harry W Strauss, Jagat Narula
OBJECTIVES: The purpose of this study was to evaluate the feasibility of imaging apoptosis in experimental ischemia-reperfusion model by technetium-99m (99m Tc)-labeled Duramycin, and compare it to an established tracer,99m Tc-labeled Annexin-V, which has a relative disadvantage of high radiation burden to nontarget organs. BACKGROUND: During apoptosis, the cell membrane phospholipids-phosphatidylserine (PS) and phosphatidylethanolamine (PE) are exposed and can be targeted by Annexin-V and Duramycin, respectively, for in vivo imaging...
February 9, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29451033/control-release-of-mitochondria-targeted-antioxidant-by-injectable-self-assembling-peptide-hydrogel-ameliorated-persistent-mitochondrial-dysfunction-and-inflammation-after-acute-kidney-injury
#3
Meng Zhao, Yijie Zhou, Shuyun Liu, Lan Li, Younan Chen, Jingqiu Cheng, Yanrong Lu, Jingping Liu
Persistent mitochondrial injury occurs after acute kidney injury (AKI) and mitochondria-targeted antioxidant Mito-2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) (MT) has shown benefits for AKI, but its efficiency is limited by short half-life and side effect in vivo. Self-assembling peptide (SAP) hydrogel is a robust platform for drug delivery. This study aims to develop an SAP-based carrier to slow release MT for enhancing its long-term therapeutic potency on AKI. The KLD with aspartic acid (KLDD) was designed...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29446739/role-of-complement-properdin-in-renal-ischemia-reperfusion-injury
#4
Zinah Zwaini, Houyong Dai, Cordula Stover, Bin Yang
Renal ischemia-reperfusion injury (IRI) is one of the main causes of acute kidney injury (AKI), and may lead to chronic kidney disease. The high mortality rate of AKI has not changed in the last 5 decades due to non-recognition, nephrotoxin exposure, delayed diagnosis and lack of specific intervention. Complement activation plays important roles in IRI-induced AKI because of its association with immunity, inflammation, cell death and tissue repair. Nevertheless, the role of complement properdin, the sole positive regulator of the alternative pathway, in IRI-induced AKI has not been well defined...
February 13, 2018: Current Gene Therapy
https://www.readbyqxmd.com/read/29446738/how-do-dendritic-cells-play-the-role-in-ischemia-reperfusion-triggered-kidney-allograft-rejection
#5
Songjie Cai, Naotsugu Ichimaru, Shiro Takahara
In deceased donors, ischemia/reperfusion injury (IRI) is an important cause of allograft dysfunction. Prolonged cold and warm ischemia time leads to a high risk of early post-transplant complications, including acute and chronic rejection. Ischemia not only up-regulates inflammatory cytokines and chemokines, but also enhances the expression of MHC-class II and adhesion molecules on epithelial and dendritic cells. Moreover, the danger associated molecular patterns (DAMPs) released from stressed or dying cells, not only cause or amplify tissue inflammation and trigger tissue repair in response to IRI, but also act as adjuvants that enhance DC maturation and potentiate the adaptive immune response...
February 13, 2018: Current Gene Therapy
https://www.readbyqxmd.com/read/29446737/gene-modified-mesenchymal-stem-cell-based-therapy-in-renal-ischemia-reperfusion-injury
#6
Hongbo Xu, Cheng Chen, Linkun Hu, Jianquan Hou
Acute kidney injury (AKI) is a common syndrome in the clinic and has become a worldwide public health problem. Renal ischemia-reperfusion injury (IRI) is the most common cause of AKI. So far, effective treatment is still lacking for renal IRI, resulting in a high mortality rate of AKI. Mesenchymal stem cells (MSCs), considered as a promising candidate for tissue repair and regenerative medicine have aroused an increasing concern in recent years for the capacity of self-renewal and multi-lineage differentiation...
February 13, 2018: Current Gene Therapy
https://www.readbyqxmd.com/read/29436517/endogenous-il-33-contributes-to-kidney-ischemia-reperfusion-injury-as-an-alarmin
#7
Maroua Ferhat, Aurélie Robin, Sébastien Giraud, Sandra Sena, Jean-Michel Goujon, Guy Touchard, Thierry Hauet, Jean-Philippe Girard, Jean-Marc Gombert, André Herbelin, Antoine Thierry
Inflammation is a prominent feature of ischemia-reperfusion injury (IRI), which is characterized by leukocyte infiltration and renal tubular injury. However, signals that initiate these events remain poorly understood. We examined the role of the nuclear alarmin IL-33 in tissue injury and innate immune response triggered by experimental kidney ischemia-reperfusion. In wild-type mice, we found that IL-33 was constitutively expressed throughout the kidney in peritubular and periglomerular spaces, mainly by microvascular endothelial cells, from which it was released immediately during IRI...
February 7, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29407319/dual-gas-treatment-with-hydrogen-and-carbon-monoxide-attenuates-oxidative-stress-and-protects-from-renal-ischemia-reperfusion-injury
#8
T Nishida, T Hayashi, T Inamoto, R Kato, N Ibuki, K Takahara, T Takai, Y Yoshikawa, T Uchimoto, K Saito, N Tanda, J Kouno, K Minami, H Uehara, H Hirano, H Nomi, Y Okada, H Azuma
BACKGROUND: Hydrogen (H2) and carbon monoxide (CO) gas are both reported to reduce reactive oxygen species and alleviate tissue ischemia-reperfusion (I-R) injury. The present study was conducted to evaluate the effects of a mixture of H2 gas and CO gas (dual gas) in comparison with hydrogen gas (H2: 2%) alone on I-R renal injury (composition of dual gas; N2: 77.8%; O2: 20.9%; H2: 1.30%; CO: 250 parts per million). METHODS: Adult male Sprague-Dawley rats (body weight 250-280 g) were divided into 5 groups: (1) sham operation control, (2) dual gas inhalation (dual treatment) without I-R treatment, (3) I-R renal injury, (4) H2 gas alone inhalation (H2 treatment) with I-R renal injury, and (5) dual treatment with I-R renal injury...
January 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29402223/morg1-mice-are-protected-from-histological-renal-damage-and-inflammation-in-a-murine-model-of-endotoxemia
#9
Tzvetanka Bondeva, Claudia Schindler, Katrin Schindler, Gunter Wolf
BACKGROUND: The MAPK-organizer 1 (MORG1) play a scaffold function in the MAPK and/or the PHD3 signalling paths. Recently, we reported that MORG1+/- mice are protected from renal injury induced by systemic hypoxia and acute renal ischemia-reperfusion injury via increased hypoxia-inducible factors (HIFs). Here, we explore whether MORG1 heterozygosity could attenuate renal injury in a murine model of lipopolysaccharide (LPS) induced endotoxemia. METHODS: Endotoxemia was induced in mice by an intraperitoneal (i...
February 5, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29399365/urinary-hepcidin-25-is-elevated-in-patients-that-avoid-acute-kidney-injury-following-cardiac-surgery
#10
Nora Choi, Claudio Rigatto, Michael Zappitelli, Ang Gao, Simon Christie, Brett Hiebert, Rakesh C Arora, Julie Ho
Background: Acute kidney injury (AKI) following cardiac surgery leads to increased morbidity and mortality. Characterization and validation of early biomarkers of AKI may ultimately facilitate early therapeutic intervention. We have previously identified that elevated urinary hepcidin-25 is inversely and independently associated with the development of AKI in adult cardiac surgery patients. Hepcidin-25 is an antimicrobial peptide that sequesters iron intracellularly, and its elevation following human ischemia reperfusion injury may represent a renoprotective response to minimize renal injury...
2018: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/29398595/ischemia-reperfusion-injury-reduces-long-term-renal-graft-survival-mechanism-and-beyond
#11
REVIEW
Hailin Zhao, Azeem Alam, Aurelie Pac Soo, Andrew J T George, Daqing Ma
Ischemia-reperfusion injury (IRI) during renal transplantation often initiates non-specific inflammatory responses that can result in the loss of kidney graft viability. However, the long-term consequence of IRI on renal grafts survival is uncertain. Here we review clinical evidence and laboratory studies, and elucidate the association between early IRI and later graft loss. Our critical analysis of previous publications indicates that early IRI does contribute to later graft loss through reduction of renal functional mass, graft vascular injury, and chronic hypoxia, as well as subsequent fibrosis...
February 1, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29389016/complement-factor-h-protects-mice-from-ischemic-acute-kidney-injury-but-is-not-critical-for-controlling-complement-activation-by-glomerular-igm
#12
Lindsey Goetz, Jennifer Laskowski, Brandon Renner, Matthew C Pickering, Liudmila Kulik, Jelena Klawitter, Erik Stites, Uwe Christians, Johan van der Vlag, Kameswaran Ravichandran, V Michael Holers, Joshua M Thurman
Natural IgM binds to glomerular epitopes in several progressive kidney diseases. Previous work has shown that IgM also binds within the glomerulus after ischemia/reperfusion (I/R) but does not fully activate the complement system. Factor H is a circulating complement regulatory protein, and congenital or acquired deficiency of factor H is a strong risk factor for several types of kidney disease. We hypothesized that factor H controls complement activation by IgM in the kidney after I/R, and that heterozygous factor H deficiency would permit IgM-mediated complement activation and injury at this location...
February 1, 2018: European Journal of Immunology
https://www.readbyqxmd.com/read/29385802/nitric-oxide-delivering-high-density-lipoprotein-like-nanoparticles-as-a-biomimetic-nanotherapy-for-vascular-disease
#13
Jonathan S Rink, Wangqiang Sun, Sol Misener, Jiao-Jing Wang, Zheng Jenny Zhang, Melina R Kibbe, Vinayak P Dravid, Subbu S Venkatraman, C Shad Thaxton
Disorders of blood vessels cause a range of severe health problems. As a powerful vasodilator and cellular second messenger, nitric oxide (NO) is known to have beneficial vascular functions. But NO typically has a short half-life and is not specifically targeted. On the other hand, high-density lipoproteins (HDLs) are targeted natural nanoparticles that transport cholesterol in the systemic circulation, and whose protective effects in vascular homeostasis overlap with those of NO. Evolving the AuNP-templated HDL-like nanoparticles (HDL NPs), a platform of bio-inspired HDL, we set up a targeted biomimetic nanotherapy for vascular disease that combines the functions of NO and HDL...
February 1, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29384471/a-novel-approach-to-off-clamp-partial-nephrectomy-demonstrates-significant-improvements-in-renal-injury-in-an-experimental-porcine-model
#14
Daniel Olvera-Posada, Shouzhe Lin, Ghaleb Aboalsamh, Aaron Haig, Ian Lobb, Jaskirandeep Grewal, Manujendra N Saha, Alp Sener
INTRODUCTION: We sought to design a partial nephrectomy (PN) with contralateral total nephrectomy porcine model and assess the underlying mechanisms of ischemia reperfusion injury (IRI) after PN using a novel, clinically approved resection device. METHODS: Domestic male pigs (n=9) underwent left lower pole PN, allocated to either standard (Group 1) or no ischemia PN (Group 2), followed by contralateral nephrectomy. Biochemical studies were performed at baseline, Day 2, and Day 7; after sacrifice, kidneys were processed for histological analysis...
October 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/29384417/salvianolic-acid-a-ameliorates-renal-ischemia-reperfusion-injury-by-activating-akt-mtor-4ebp1-signaling-pathway
#15
Ying Song, Weihai Liu, Yi Ding, Yan-Yan Jia, Jinyi Zhao, Fan Wang, Juan Bai, Lianghua Cheng, Kai Gao, Meiyou Liu, Minna Yao, Liang Li, Yanmin Zhang, Aidong Wen, Langchong He
Salvianolic acid A (Sal A) has been shown to prevent and treat ischemic cardiovascular as well as cerebral vascular diseases. However, little is known about Sal A in renal ischemia/reperfusion (I/R) injury. In this study, a renal I/R injury model in rats and a hypoxia/reoxygenation (H/R) model to damage proximal renal tubular cells (HK-2) were used to assess whether Sal A halts the development and progression of renal I/R injury. As compared to vehicle treatment, Sal A significantly attenuated kidney injury and lowered plasma creatinine, blood urea nitrogen levels, the number of apoptosis-positive tubular cells, and kidney oxidative stress after renal I/R injury...
January 31, 2018: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29382757/rgmb-protects-against-acute-kidney-injury-by-inhibiting-tubular-cell-necroptosis-via-an-mlkl-dependent-mechanism
#16
Wenjing Liu, Binbin Chen, Yang Wang, Chenling Meng, Huihui Huang, Xiao-Ru Huang, Jinzhong Qin, Shrikant R Mulay, Hans-Joachim Anders, Andong Qiu, Baoxue Yang, Gordon J Freeman, Hua Jenny Lu, Herbert Y Lin, Zhi-Hua Zheng, Hui-Yao Lan, Yu Huang, Yin Xia
Tubular cell necrosis is a key histological feature of acute kidney injury (AKI). Necroptosis is a type of programed necrosis, which is executed by mixed lineage kinase domain-like protein (MLKL) upon its binding to the plasma membrane. Emerging evidence indicates that necroptosis plays a critical role in the development of AKI. However, it is unclear whether renal tubular cells undergo necroptosis in vivo and how the necroptotic pathway is regulated during AKI. Repulsive guidance molecule (RGM)-b is a member of the RGM family...
January 30, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29382128/hypoxia-inducible-factor-and-its-role-in-the-management-of-anemia-in-chronic-kidney-disease
#17
REVIEW
Joshua M Kaplan, Neeraj Sharma, Sean Dikdan
Hypoxia-inducible factor (HIF) plays a crucial role in the response to hypoxia at the cellular, tissue, and organism level. New agents under development to pharmacologically manipulate HIF may provide new and exciting possibilities in the treatment of anemia of chronic kidney disease (CKD) as well as in multiple other disease states involving ischemia-reperfusion injury. This article provides an overview of recent studies describing current standards of care for patients with anemia in CKD and associated clinical issues, and those supporting the clinical potential for targeting HIF stabilization with HIF prolyl-hydroxylase inhibitors (HIF-PHI) in these patients...
January 29, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29380564/in-situ-tissue-regeneration-of-renal-tissue-induced-by-collagen-hydrogel-injection
#18
Sang Jin Lee, Hung-Jen Wang, Tae-Hyoung Kim, Jin San Choi, Gauri Kulkarni, John D Jackson, Anthony Atala, James J Yoo
Host stem/progenitor cells can be mobilized and recruited to a target location using biomaterials, and these cells may be used for in situ tissue regeneration. The objective of this study was to investigate whether host biologic resources could be used to regenerate renal tissue in situ. Collagen hydrogel was injected into the kidneys of normal mice, and rat kidneys that had sustained ischemia/reperfusion injury. After injection, the kidneys of both animal models were examined up to 4 weeks for host tissue response...
February 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29380523/dcd-donor-hemodynamics-as-predictor-of-outcome-after-kidney-transplantation
#19
H Peters-Sengers, J H E Houtzager, M B A Heemskerk, M M Idu, R C Minnee, R W Klaasen, S E Joor, J A M Hagenaars, P M Rebers, J J Homan van der Heide, J I Roodnat, F J Bemelman
Insufficient hemodynamics during agonal phase-i.e. the period between withdrawal of life-sustaining treatment and circulatory arrest-in Maastricht category III circulatory-death donors (DCD) potentially exacerbate ischemia/reperfusion injury. We included 409 Dutch adult recipients of DCD donor kidneys transplanted between 2006 and 2014. Peripheral oxygen saturation (SpO2-with pulse oximetry at the fingertip) and systolic blood pressure (SBP-with arterial catheter) were measured during agonal phase, and were dichotomized into minutes of SpO2>60% or SpO2<60%, and minutes of SBP>80 mmHg or SBP<80 mmHg...
January 30, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29377474/a-prospective-randomized-controlled-trial-of-eculizumab-to-prevent-ischemia-reperfusion-injury-in-pediatric-kidney-transplantation
#20
Michael Kaabak, Nadeen Babenko, Ron Shapiro, Allan Zokoyev, Olga Dymova, Edward Kim
Ischemia-reperfusion injury has multiple effects on a transplanted allograft, including delayed or impaired graft function, compromised long-term survival, and an association with an increased incidence of rejection. Eculizumab, a monoclonal antibody blocking terminal complement activation, has been postulated to be an effective agent in the prevention or amelioration of IRI. We performed a single-center prospective, randomized controlled trial involving 57 pediatric kidney transplant recipients between 2012 and 2016...
January 29, 2018: Pediatric Transplantation
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