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Reperfusion injury

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https://www.readbyqxmd.com/read/28346848/cardiovascular-protective-effects-and-clinical-applications-of-resveratrol
#1
Sanghyun Cho, Kyung Namkoong, Minji Shin, Jueun Park, Eunyeong Yang, Jinsoo Ihm, Vu Thi Thu, Hyoung Kyu Kim, Jin Han
Resveratrol is a naturally occurring phenol that is generated by plant species following injury or attack by bacterial and fungal pathogens. This compound was first described as the French Paradox in 1992. Later in 2003, resveratrol was reported to activate sirtuins in yeast cells. Recent experimental studies have found that resveratrol offers a variety of benefits that include both anticarcinogenic and anti-inflammatory effects in addition to the ability to reverse obesity, attenuate hyperglycemia and hyperinsulinemia, protect heart and endothelial function, and increase the life span...
March 27, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28345618/ptpip51-regulates-mouse-cardiac-ischemia-reperfusion-through-mediating-the-mitochondria-sr-junction
#2
Xue Qiao, Shi Jia, Jingjing Ye, Xuan Fang, Chenglin Zhang, Yangpo Cao, Chunling Xu, Lifang Zhao, Yi Zhu, Lu Wang, Ming Zheng
Protein tyrosine phosphatase interacting protein 51 (PTPIP51) participates in multiple cellular processes, and dysfunction of PTPIP51 is implicated in diseases such as cancer and neurodegenerative disorders. However, there is no functional evidence showing the physiological or pathological roles of PTPIP51 in the heart. We have therefore investigated the role and mechanisms of PTPIP51 in regulating cardiac function. We found that PTPIP51 was markedly upregulated in ischemia/reperfusion heart. Upregulation of PTPIP51 by adenovirus-mediated overexpression markedly increased the contact of mitochondria-sarcoplasmic reticulum (SR), elevated mitochondrial Ca(2+) uptake from SR release through mitochondrial Ca(2+)uniporter...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345551/biliverdin-protects-the-isolated-rat-lungs-from-ischemia-reperfusion-injury-via-antioxidative-anti-inflammatory-and-anti-apoptotic-effects
#3
Wen-Fang Tian, Ping Weng, Qiong Sheng, Jun-Liang Chen, Peng Zhang, Ji-Ru Zhang, Bin Du, Min-Chen Wu, Qing-Feng Pang, Jian-Jun Chu
BACKGROUND: Biliverdin (BV) has a protective role against ischemia-reperfusion injury (IRI). However, the protective role and potential mechanisms of BV on lung IRI (LIRI) remain to be elucidated. Thus, we aimed to investigate the protective role and potential mechanisms of BV on LIRI. METHODS: Lungs were isolated from Sprague-Dawley rats to establish an ex vivo LIRI model. After an initial 15 min stabilization period, the isolated lungs were subjected to ischemia for 60 min, followed by 90 min of reperfusion with or without BV treatment...
April 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28344966/lower-limb-compartment-syndrome-by-reperfusion-injury-after-treatment-of-arterial-thrombosis-post-laparoscopic-radical-hysterectomy-and-pelvic-lymph-node-dissection-for-cervical-cancer
#4
Jihee Yeon, Ye Won Jung, Shin Seok Yang, Byung Hun Kang, Mina Lee, Young Bok Ko, Jung Bo Yang, Ki Hwan Lee, Heon Jong Yoo
Compartment syndrome is a clinical condition associated with decreased blood circulation that can lead to swelling of tissue in limited space. Several factors including lithotomy position, prolonged surgery, intermittent pneumatic compressor, and reperfusion after treatment of arterial thrombosis may contribute to compartment syndrome. However, compartment syndrome rarely occurs after gynecologic surgery. In this case, the patient was diagnosed as compartment syndrome due to reperfusion injury after treatment of arterial thrombosis, which occurred after laparoscopic radical hysterectomy and pelvic lymph node dissection for cervical cancer...
March 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28344616/the-impact-of-a-single-episode-of-remote-ischemic-preconditioning-on-myocardial-injury-after-elective-percutaneous-coronary-intervention
#5
Mustafa A Yılmaztepe, Gökay Taylan, Meryem Aktoz, Hanefi Y Gürlertop, Yüksel Aksoy, Fatih Özçelik, Kenan Yalta, Galip Ekuklu
INTRODUCTION: Myocardial injury after percutaneous coronary intervention (PCI) occurs in approximately 30% of procedures, and is related to worse prognosis. Effects of remote ischemic preconditioning (RIPC) on reperfusion injury have been investigated before, yielding conflicting results. AIM: To assess the impact of a single episode of RIPC on myocardial injury after elective PCI. MATERIAL AND METHODS: One hundred and four patients undergoing elective PCI, with normal baseline cardiac troponin-I (cTn-I) values, were randomized to two groups...
2017: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
https://www.readbyqxmd.com/read/28344130/aquaporin-3-deletion-in-mice-results-in-renal-collecting-duct-abnormalities-and-worsens-ischemia-reperfusion-injury
#6
Lei Lei, Weiling Wang, Yingli Jia, Limin Su, Hong Zhou, Alan S Verkman, Baoxue Yang
Aquaporin-3 (AQP3), a transporter of water, glycerol and H2O2, is expressed in basolateral membranes of principal cells in kidney collecting duct. Here, we report that AQP3 deletion in mice affects renal function and modulates renal injury. We found collecting duct hyperplasia and cell swelling in kidneys of adult AQP3 null mice. After mild renal ischemia-reperfusion (IR), AQP3 null mice had significantly greater blood urea nitrogen (57mg/dl) and creatinine (136μM) than wild-type mice (35mg/dl and 48μM, respectively), and showed renal morphological changes, including tubular dilatation, erythrocyte diapedesis and collecting duct incompletion...
March 23, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28343995/urolithin-a-alleviates-myocardial-ischemia-reperfusion-injury-via-pi3k-akt-pathway
#7
Lu Tang, Yingli Mo, Yunpeng Li, Yongkang Zhong, Shangfei He, Ya Zhang, Ying Tang, Shanshan Fu, Xianbao Wang, Aihua Chen
Ischemia/reperfusion (I/R) induces additional damage to the restoration of blood flow to ischemic myocardium. This study examined the effects of urolithin A (UA) on myocardial injury of ischemia/reperfusion in vivo and vitro and explored its underlying mechanisms. Mice were subjected to myocardial ischemia followed by reperfusion. Cells were subjected to hypoxia followed by reoxygenation. UA alleviated hypoxia/reoxygenation (H/R) injury in myocardial cells, reduced myocardial infarct size and cell death in mice after ischemia/reperfusion...
March 23, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28343994/revelation-of-the-dynamic-progression-of-hypoxia-reoxygenation-injury-by-visualization-of-the-lysosomal-hydrogen-peroxide
#8
Yuanjun Zhu, Tongliang Zhou, Lingfei Yang, Lan Yuan, Lei Liang, Ping Xu
Hydrogen peroxide (H2O2) plays an important role in pathological conditions, such as cerebral ischemia-reperfusion (I-R) injury. Fluorescent probes may serve as valuable tools to detect the amount, temporal and spatial distribution of H2O2 in living cells. To investigate the role of lysosomal H2O2 involved in cerebral I-R injury, we designed and synthesized a lysosome-targetable two-photon fluorescent probe ztl-4, through expansion and substitution of the original pyridazinone scaffold, conjugation of electronic-donating aromatic ring and precise terminal modification of the alkyl linker...
March 24, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28343696/hypothermic-perfusion-with-retrograde-outflow-during-right-hepatectomy-is-safe-and-feasible
#9
Megan J Reiniers, Pim B Olthof, Rowan F van Golen, Michal Heger, Adriaan A van Beek, Ben Meijer, René Leen, André B P van Kuilenburg, Banafsche Mearadji, Roelof J Bennink, Joanne Verheij, Thomas M van Gulik
BACKGROUND: In situ hypothermic perfusion during liver resection performed under vascular inflow occlusion decreases hepatic ischemia-reperfusion injury, but technical limitations have restricted its widespread use. In situ hypothermic perfusion with retrograde outflow circumvents these impediments and thus could extend the applicability of in situ hypothermic perfusion. The safety and feasibility of in situ hypothermic perfusion with retrograde outflow were analyzed in selected patients undergoing right (extended) hepatectomy and compared to intermittent vascular inflow occlusion, the gold standard method, in this randomized pilot study...
March 23, 2017: Surgery
https://www.readbyqxmd.com/read/28343356/development-of-a-novel-strategy-to-target-cd39-antithrombotic-activity-to-the-endothelial-platelet-microenvironment-in-kidney-ischemia-reperfusion-injury
#10
Maithili Sashindranath, Karen M Dwyer, Shala Dezfouli, Carly Selan, Sandra Crikis, Bo Lu, Yuping Yuan, Michael J Hickey, Karlheinz Peter, Simon C Robson, Peter J Cowan, Harshal H Nandurkar
Kidney ischemia-reperfusion injury (IRI) is common during transplantation. IRI is characterised by inflammation and thrombosis and associated with acute and chronic graft dysfunction. P-selectin and its ligand PSGL-1 are cell adhesion molecules that control leukocyte-endothelial and leukocyte-platelet interactions under inflammatory conditions. CD39 is the dominant vascular nucleotidase that facilitates adenosine generation via extracellular ATP/ADP-phosphohydrolysis. Adenosine signalling is protective in renal IRI, but CD39 catalytic activity is lost with exposure to oxidant stress...
March 25, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/28343072/ribonuclease-attenuates-hepatic-ischemia-reperfusion-induced-cognitive-impairment-through-the-inhibition-of-inflammatory-cytokines-in-aged-mice
#11
Gang Ma, Chan Chen, Haixia Jiang, Yanhua Qiu, Yansong Li, Xiaoqiang Li, Xiyang Zhang, Jin Liu, Tao Zhu
BACKGROUND: Elderly patients undergoing major surgery often develop cognitive dysfunction, and no optimum treatment exists for this postoperative complication. Ribonuclease, the counterpart of ribonucleic acid, has mostly been reported in terms of its use as a potential modality in anticancer therapy, and recent studies have demonstrated that ribonuclease can exert organ-protective effects in several pathological conditions. Our study also demonstrated that ribonuclease protects the liver against ischemia reperfusion injury...
March 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28342809/identity-and-function-of-a-cardiac-mitochondrial-small-conductance-ca-2-activated-k-channel-splice-variant
#12
Meiying Yang, Amadou K S Camara, Mohammed Aldakkak, Wai-Meng Kwok, David F Stowe
We provide evidence for location and function of a small conductance, Ca(2+)-activated K(+) (SKCa) channel isoform 3 (SK3) in mitochondria (m) of guinea pig, rat and human ventricular myocytes. SKCa agonists protected isolated hearts and mitochondria against ischemia/reperfusion (IR) injury; SKCa antagonists worsened IR injury. Intravenous infusion of a SKCa channel agonist/antagonist, respectively, in intact rats was effective in reducing/enhancing regional infarct size induced by coronary artery occlusion...
March 22, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28342806/molecular-regulation-of-mitochondrial-dynamics-in-cardiac-disease
#13
REVIEW
Jinliang Nan, Wei Zhu, M S Rahman, Mingfei Liu, Dan Li, Shengan Su, Na Zhang, Xinyang Hu, Hong Yu, Mahesh P Gupta, Jian''an Wang
Mitochondrial homeostasis is critical for keeping functional heart in response to metabolic or environmental stresses. Mitochondrial fission and fusion (mitochondrial dynamics) play essential roles in maintaining mitochondrial homeostasis, defects in mitochondrial dynamics lead to cardiac diseases such as ischemia-reperfusion injury (IRI), heart failure and diabetic cardiomyopathy. Mitochondrial dynamics is determined by mitochondrial fission and fusion proteins, including OPA1, mitofusins and Drp1. These proteins are tightly regulated by a series of signaling pathways through different aspects such as transcription, post translation modifications (PTMs) and proteasome-dependent protein degradation...
March 22, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28341816/increased-expression-of-toll-like-receptors-2-and-4-in-renal-transplant-recipients-that-develop-allograft-dysfunction-a-cohort-study
#14
Morteza Hosseinzadeh, Mohsen Nafar, Pedram Ahmadpoor, Farshid Noorbakhsh, Mir Saeed Yekaninejad, Mohammad Hossein Niknam, Aliakbar Amirzargar
BACKGROUND: The incidence of ischemic reperfusion injury (IRI) in early phase post-transplantation and activation of toll-like receptor (TLR-2) and TLR-4 remarkably impact the outcome of a renal allograft. OBJECTIVE: To investigate whether the expression of TLRs in peripheral blood mononuclear cells (PBMCs) can predict the clinical outcome of kidney allografts. METHODS: We obtained blood samples from 52 renal transplant patients before transplant, and 2, 90, and 180 days post-transplantation in order to analyze the surface expressions of TLR-2 and TLR-4 on peripheral blood monocytes...
March 2017: Iranian Journal of Immunology: IJI
https://www.readbyqxmd.com/read/28341507/endovascular-aortic-repair-for-progressive-chronic-thoracoabdominal-aortic-dissections
#15
Vito Mantese, Shameem Kunhammed
BACKGROUND: Ascending and thoracic aortic dissections progress into thoracoabdominal aneurysms 20-40% of the time, due to the initial aortic injury with associated weakness of the aortic wall. The increased firmness of the intimal flap usually results in a collapsed true lumen that does not spontaneously re-expand even with progressive dilatation of the aorta. In an effort to identify a safe and effective treatment path for this complex disease process, we present 4 cases illustrating successful sequential thoracic endovascular aortic repair (TEVAR) and fenestrated endovascular aortic repair (FEVAR)...
March 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28341347/remote-limb-ischemic-post-conditioning-during-early-reperfusion-alleviates-cerebral-ischemic-reperfusion-injury-via-gsk-3%C3%AE-creb-bdnf-pathway
#16
Sruthi Ramagiri, Rajeev Taliyan
Remote limb ischemic post conditioning (RIPOC) has been reported to attenuate cerebral ischemic reperfusion (I/R) injury, while the molecular mechanisms remain elusive. Various studies have highlighted the involvement of glycogen synthase kinase (GSK-3β) in cerebral I/R injury and cognitive disorders. Hence, the present study was designed to explore the role of GSK-3β and its downstream regulators in RIPOC mediated neuroprotection against cerebral I/R injury and associated cognitive impairment. Male Wistar rats are randomly assigned into four groups: Sham, bilateral common carotid arteries occlusion (BCCAO), RIPOC and BCCAO+RIPOC...
March 21, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28340376/linarin-could-protect-myocardial-tissue-from-the-injury-of-ischemia-reperfusion-through-activating-nrf-2
#17
Qian Yu, Xin Li, Xia Cao
OBJECTIVES: As we all know, oxidative stress was one of the most important causes of ischemia-reperfusion injury. And it was reported that Nrf-2 as an important regulator for oxidative stress could be activated by Linarin. Thus it would be interesting to find whether Linarin could inhibit ischemia-reperfusion injury through activating Nrf-2. METHODS: In this study, cell activity was detected by MTT assay and caspase-3 activity detection kit. And the expressions or activities of some signal proteins were evaluated by western-blot or activity detection kits...
March 21, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28340319/apigenin-reduces-nf-%C3%AE%C2%BAb-and-subsequent-cytokine-production-as-protective-effect-in-a-rodent-animal-model-of-lung-ischemia-reperfusion-injury
#18
Ioannis Bougioukas, Vassilios Didilis, Alexander Emmert, Ahmad F Jebran, Regina Waldmann-Beushausen, Tomislav Stojanovic, Friedrich A Schoendube, Bernhard C Danner
PURPOSE: Lung ischemia-reperfusion injury (LIRI) can complicate lung transplantation or cardiac surgery with cardiopulmonary bypass, increasing morbidity and mortality. In LIRI, pro-inflammatory cytokines are activated, reactive oxygen species are generated and nuclear factor-κB (NF-κB) is up-regulated, altering lung mechanics. We tested the effect of the flavonoid apigenin on a rodent model of LIRI. METHODS: Thirty-seven Wistar rats were subjected to LIRI with or without a single or double dose of apigenin...
March 24, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28340182/novel-targets-and-future-strategies-for-acute-cardioprotection-position-paper-of-the-european-society-of-cardiology-working-group-on-cellular-biology-of-the-heart
#19
Derek J Hausenloy, David Garcia-Dorado, Hans Erik Bøtker, Sean M Davidson, James Downey, Felix B Engel, Robert Jennings, Sandrine Lecour, Jonathan Leor, Rosalinda Madonna, Michel Ovize, Cinzia Perrino, Fabrice Prunier, Rainer Schulz, Joost P G Sluijter, Linda W Van Laake, Jakob Vinten-Johansen, Derek M Yellon, Kirsti Ytrehus, Gerd Heusch, Péter Ferdinandy
Ischaemic heart disease and the heart failure that often results, remain the leading causes of death and disability in Europe and worldwide. As such, in order to prevent heart failure and improve clinical outcomes in patients presenting with an acute ST-segment elevation myocardial infarction and patients undergoing coronary artery bypass graft surgery, novel therapies are required to protect the heart against the detrimental effects of acute ischaemia/reperfusion injury. During the last three decades, a wide variety of ischaemic conditioning strategies and pharmacological treatments have been tested in the clinic - however, their translation from experimental to clinical studies for improving patient outcomes has been both challenging and disappointing...
March 17, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28339958/postconditioning-protects-renal-fibrosis-by-attenuating-oxidative-stress-induced-mitochondrial-injury
#20
Shuxian Zhang, Xiaohua Tan, Yan Chen, Xiuying Zhang
Background.: Epithelial-mesenchymal transition (EMT) plays a critical role in renal fibrosis. We hypothesize that mitochondrial DNA damage and DNA deletions caused by reactive oxygen species (ROS) during renal ischemia-reperfusion injury (IRI) might lead to EMT in renal fibrosis. Methods.: Rats were classified into seven groups: sham-operation, IRI, postconditioning (POC), I/R + apocynin, POC +  apocynin, I/R + Mito-Tempol (Mito-T) and POC +  Mito-T...
March 3, 2017: Nephrology, Dialysis, Transplantation
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