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Reperfusion myocardial injury

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https://www.readbyqxmd.com/read/29789792/remote-ischemic-postconditioning-protects-against-myocardial-ischemia-reperfusion-injury-by-inhibition-of-the-rage-hmgb1-pathway
#1
Xiangming Wang, Junhong Wang, Tiantian Tu, Zakaria Iyan, Deeraj Mungun, Zhijian Yang, Yan Guo
Background: The aim of the present study was to observe the effect of RAGE-HMGB1 signal pathway on remote ischemic postconditioning in mice with myocardial ischemia reperfusion injury. Methods: Mice model of MIRI was established and randomly divided into three groups: control group, ischemia reperfusion group, and remote ischemic postconditioning group. Infarction size was detected by Evans blue and TTC staining. Cardiac function was detected by echocardiography measurement...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29786750/microrna%C3%A2-20b%C3%A2-5p-promotes-ventricular-remodeling-by-targeting-the-tgf%C3%A2-%C3%AE-smad-signaling-pathway-in-a-rat-model-of-ischemia%C3%A2-reperfusion-injury
#2
Zhao-Guang Liang, Hong Yao, Rong-Sheng Xie, Chun-Lin Gong, Ye Tian
Myocardial ischemic injury results from severe impairment of the coronary blood supply and may lead to metabolic and ultrastructural changes, thereby causing irreversible damage. MicroRNA (miR)‑20b‑5p has been demonstrated to be involved in malignancies of the breast, colorectum, stomach, blood and oropharynx. The present study aimed to investigate the effects of miR‑20b‑5p on ventricular remodeling following myocardial ischemia‑reperfusion (IR) injury in rats by targeting small mothers against decapentaplegic homolog 7 (Smad7) via the transforming growth factor‑β (TGF‑β)/Smad signaling pathway...
May 18, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29782637/luteolin-ameliorates-rat-myocardial-ischemia-reperfusion-injury-through-peroxiredoxin-ii-activation
#3
Bo Wei, Qiao Lin, Ya-Ge Ji, Yi-Can Zhao, Li-Na Ding, Wen-Juan Zhou, Li-Hua Zhang, Chuan-Yu Gao, Wen Zhao
BACKGROUND AND PURPOSE: Antioxidants provide a promising therapeutic effect for the cardiovascular disease. Luteolin (LUT), a polyphenolic bioflavonoid, is known to confer cardioprotection, although the underlying mechanism, especially the role of LUT on the antioxidant enzymes (e.g. peroxiredoxin family, PRXs), remains elusive. EXPERIMENTAL APPROACH: The current study was designed to evaluate the impact of LUT on MI/R injury in vivo and in vitro, as well as the underlying mechanism with a focus on PRXs signaling...
May 21, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29778748/protein-kinases-are-involved-in-the-cardioprotective-effects-activated-by-platelet-glycoprotein-iib-iiia-inhibitor-tirofiban-at-reperfusion-in-rats-in-vivo
#4
Shih-Tai Chang, Ya-Ting Yang, Chi-Ming Chu, Kuo-Li Pan, Jen-Te Hsu, Ju-Feng Hsiao, Yu-Sheng Lin, Chang-Min Chung
The thrombolytic effect of platelet glycoprotein IIb/IIIa inhibitors (GP IIb/IIIa inhibitors) in myocardial infarction has been well established. Nevertheless, data on the mechanism of the cardioprotective effect of GP IIb/IIIa inhibitors in ischemic-reperfusion injury (IR) are lacking. Sprague-Dawley rats received 120min of coronary ischemia and 180min of reperfusion. A GP IIb/IIIa inhibitor was given via continuous intravenous infusion at a rate of 2 ug/kg/min 30min prior to reperfusion with/without inhibitors of PKCε (chelerythrine), PI3 kinase and Akt (wortmannin), p38 MAPK (SB203582), p42/44 MAPK (PD98059) and ERK1/2 (u0126) 15min prior to the GP IIb/IIIa inhibitor...
May 17, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29777709/amelioration-of-myocardial-ischemia-reperfusion-injury-by-sirt4-involves-mitochondrial-protection-and-reduced-apoptosis
#5
Guangwei Zeng, Hui Liu, Haiyan Wang
Apoptosis and mitochondria dysfunction are key contributors to myocardial ischemia-reperfusion (MI-R) injury. SIRT4, a mitochondrial-localized sirtuin, controls cellular energy metabolism and stress response, and is abundantly present in the heart, however, its role in MI-R injury is not clear. In the current study, we demonstrate that SIRT4 is downregulated in cardiomyocytes both in vitro and in vivo models after MI-R. Functionally, SIRT4 overexpression decreases myocardial infarct size and serum creatine phosphokinase (CPK) level, and vice versa, SIRT4 depletion by siRNA increases myocardial infarct size and serum CPK level...
May 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29773952/remote-ischemic-preconditioning-in-myocardial-protection-in-hemodialysis-patients
#6
Marcelo R Bacci, Livia Y Vasconcelos, Neif Murad, Antonio Carlos P Chagas, Ana Carolina Capuano, Beatriz Ca Alves, Edimar C Pereira, Ligia A Azzalis, Virginia Bc Junqueira, Fernando LA Fonseca
Background: Remote ischemic preconditioning (RIPC) is a procedure that generates a brief period of ischemia followed by reperfusion. The role of RIPC in protecting myocardial ischemia during hemodialysis is not yet established. The aim of the study was to evaluate RIPC myocardial protection as evaluated by ultrasensitive I troponin in hemodialysis outpatients. Patients and methods: A double-blind randomized trial with two groups: intervention submitted to RIPC and control group without RIPC...
2018: International Journal of General Medicine
https://www.readbyqxmd.com/read/29772453/the-roles-of-cypa-and-cd147-in-cardiac-remodelling
#7
REVIEW
Hongyan Su, Yi Yang
Cyclophilin A (CyPA), an abundantly expressed protein belonging to the immunophilin family, is involved in a variety of physiological and pathological activities together with its extracellular receptor, CD147. Many studies have provided compelling evidence supporting critical roles of CyPA in immune and infectious diseases and malignant tumours. Recent studies have revealed that both CyPA and CD147 strongly promote cardiovascular inflammation, myocardial ischaemia-reperfusion injury, and myocardial remodelling processes...
May 14, 2018: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29771714/remifentanil-induces-cardio-protection-against-ischemia-reperfusion-injury-by-inhibiting-endoplasmic-reticulum-stress-through-the-maintenance-of-zinc-homeostasis
#8
Mingwei Sheng, Ge Zhang, Jiannan Wang, Qing Yang, Huanhuan Zhao, Xinxin Cheng, Zhelong Xu
BACKGROUND: Although it is well known that remifentanil (Rem) elicits cardiac protection against ischemia/reperfusion (I/R) injury, the underlying mechanism remains unclear. This study tested if Rem can protect the heart from I/R injury by inhibiting endoplasmic reticulum (ER) stress through the maintenance of zinc (Zn) homeostasis. METHODS: Isolated rat hearts were subjected to 30 minutes of regional ischemia followed by 2 hours of reperfusion. Rem was given by 3 consecutive 5-minute infusions, and each infusion was followed by a 5-minute drug-free perfusion before ischemia...
May 15, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29770799/heart-type-fatty-acid-binding-protein-h-fabp-as-a-biomarker-for-acute-myocardial-injury-and-long-term-post-ischemic-prognosis
#9
REVIEW
Xiao-Dong Ye, Yi He, Sheng Wang, Gordon T Wong, Michael G Irwin, Zhengyuan Xia
Acute myocardial infarction (AMI) is a life-threatening event. Even with timely treatment, acute ischemic myocardial injury and ensuing ischemia reperfusion injury (IRI) can still be difficult issues to tackle. Apart from radiological and other auxiliary examinations, laboratory tests of applicable cardiac biomarkers are also necessary for early diagnosis and close monitoring of this disorder. Heart-type fatty acid binding protein (H-FABP), which mainly exists inside cardiomyocytes, has recently emerged as a potentially promising biomarker for myocardial injury...
May 17, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29769287/the-protective-role-of-macrophage-migration-inhibitory-factor-in-acute-kidney-injury-after-cardiac-surgery
#10
Christian Stoppe, Luisa Averdunk, Andreas Goetzenich, Josefin Soppert, Arnaud Marlier, Sandra Kraemer, Jil Vieten, Mark Coburn, Ana Kowark, Bong-Song Kim, Gernot Marx, Steffen Rex, Akinobu Ochi, Lin Leng, Gilbert Moeckel, Andreas Linkermann, Omar El Bounkari, Alexander Zarbock, Jürgen Bernhagen, Sonja Djudjaj, Richard Bucala, Peter Boor
Acute kidney injury (AKI) represents the most frequent complication after cardiac surgery. Macrophage migration inhibitory factor (MIF) is a stress-regulating cytokine that was shown to protect the heart from myocardial ischemia-reperfusion injury, but its role in the pathogenesis of AKI remains unknown. In an observational study, serum and urinary MIF was quantified in 60 patients scheduled for elective conventional cardiac surgery with the use of cardiopulmonary bypass. Cardiac surgery triggered an increase in MIF serum concentrations, and patients with high circulating MIF (>median) 12 hours after surgery had a significantly reduced risk of developing AKI (relative risk reduction, 72...
May 16, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29768378/cerebral-infarction-as-initial-presentation-in-stress-cardiomyopathy-case-report-and-literature-review
#11
Qiongying Wang, Heng Yu, Cheng Jiang, Runmin Sun, Miaomiao Qi, Shougang Sun, Guangli Xu, Hongbin Cai, Zhenchang Zhang, Feng Zhao, Xiaoqing Kou, Jing Yu, Feng Bai
RATIONALE: The typical symptoms of stress cardiomyopathy include sudden-onset chest pain and breathlessness or collapse as well as classical symptoms of cardiovascular disease; however, rare reports have described nervous system symptoms as the initial manifestation. Here, we report the case of a young man who presented with a large cerebral infarction as the main clinical symptom of stress cardiomyopathy to increase recognition of the disease. PATIENT CONCERNS: A 28-year-old man was admitted to our hospital for sudden-onset weakness of the right limbs and unconsciousness for 1 day...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29766810/mst1-function-and-mechanism-in-brain-and-myocardial-ischemia-reperfusion-injury
#12
Di Li, Haibo Ni, Qin Rui, Rong Gao, Gang Chen
Mammalian STE20-like kinase-1 (Mst1) is a generally expressed apoptosis-promoting kinase and a key bridgebuilder of apoptotic signaling in the etiology of tissue injury. Despite the fact that the biological function of Mst1 and its role in the cell's signalling network have yet to be determined, however, there is a lot of evidence that Mst1 plays an important role in cell death which result from tissue injury. Previous studies have shown that Mst1 is not only a target for some apoptosis-related molecules such as caspase 3 and P53,but aslo act as an activator of these proteinases to magnify apoptosis signal pathways...
May 15, 2018: Current Neuropharmacology
https://www.readbyqxmd.com/read/29765562/a-myriad-of-roles-of-mir-25-in-health-and-disease
#13
REVIEW
Márta Sárközy, Zsuzsanna Kahán, Tamás Csont
Small non-coding RNAs including microRNAs (miRNAs) have been recently recognized as important regulators of gene expression. MicroRNAs play myriads of roles in physiological processes as well as in the pathogenesis of a number of diseases by translational repression or mRNA destabilization of numerous target genes. The miR-106b-25 cluster is highly conserved in vertebrates and consists of three members including miR-106b, miR-93 and miR-25. MiR-106b and miR-93 share the same seed sequences; however, miR-25 has only a similar seed sequence resulting in different predicted target mRNAs...
April 20, 2018: Oncotarget
https://www.readbyqxmd.com/read/29761012/an-overview-of-protective-strategies-against-ischemia-reperfusion-injury-the-role-of-hyperbaric-oxygen-preconditioning
#14
Ciprian Hentia, Alex Rizzato, Enrico Camporesi, Zhongjin Yang, Danina M Muntean, Dorel Săndesc, Gerardo Bosco
Introduction: Ischemia/reperfusion (I/R) injury, such as myocardial infarction, stroke, and peripheral vascular disease, has been recognized as the most frequent causes of devastating disorders and death currently. Protective effect of various preconditioning stimuli, including hyperbaric oxygen (HBO), has been proposed in the management of I/R. Methods: In this study, we searched and reviewed up-to-date published papers to explore the pathophysiology of I/R injury and to understand the mechanisms underlying the protective effect of HBO as conditioning strategy...
May 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29758550/microrna-449a-inhibition-protects-h9c2-cells-against-hypoxia-reoxygenation-induced-injury-by-targeting-the-notch-1-signaling-pathway
#15
Jing Cheng, Qianfu Wu, Rong Lv, Li Huang, Banglong Xu, Xianbao Wang, Aihua Chen, Fei He
BACKGROUND/AIMS: The present study aimed to detect the expression of miR-449a and investigate the effect of miR-449a on cell injury in cardiomyocytes subjected to hypoxia/ reoxygenation (H/R) and its underlying mechanisms. METHODS: The expression of miR-449a was determined using reverse transcription-polymerase chain reaction in both neonatal rat ventricular myocytes and H9C2 cells. For gain-of-function and loss-of-function studies, H9C2 cells were transfected with either miR-449a mimics or miR-449a inhibitor...
May 7, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29757923/the-antimalarial-drug-artesunate-attenuates-cardiac-injury-in-a-rodent-model-of-myocardial-infarction
#16
Areeg I Khan, Amar Kapoor, Jianmin Chen, Lukas Martin, Mara Rogazzo, Thomas Mercier, Laurent Decosterd, Massimo Collino, Christoph Thiemermann
Ischemic heart disease remains the leading cause of morbidity and mortality in the Western world. Artesunate is the WHO-recommended drug of choice for complicated malaria (with organ failure). The administration of high doses of artesunate is safe in healthy volunteers (up to 8 mg/kg i.v.) and patients with severe malaria (2.4 mg/kg i.v.). We investigated the effects of artesunate (1 mg/kg) or its active metabolite dihydroartemisinin (DHA; 0.1 mg/kg) in a model of transient myocardial ischemia/reperfusion (I/R) and evaluated the mechanism of action of the observed cardioprotective effects of artesunate and DHA...
June 2018: Shock
https://www.readbyqxmd.com/read/29744667/vagus-nerve-stimulation-exerts-cardioprotection-against-myocardial-ischemia-reperfusion-injury-predominantly-through-its-efferent-vagal-fibers
#17
Watthana Nuntaphum, Wanpitak Pongkan, Suwakon Wongjaikam, Savitree Thummasorn, Pongpan Tanajak, Juthamas Khamseekaew, Kannaporn Intachai, Siriporn C Chattipakorn, Nipon Chattipakorn, Krekwit Shinlapawittayatorn
Vagus nerve stimulation (VNS) has been shown to exert cardioprotection against myocardial ischemia/reperfusion (I/R) injury. However, whether the cardioprotection of VNS is mainly due to direct activation through its ipsilateral efferent fibers (motor) rather than indirect effects mediated by the afferent fibers (sensory) have not been clearly understood. We hypothesized that VNS exerts cardioprotection predominantly through its efferent vagal fibers. Thirty swine (30-35 kg) were randomized into five groups: I/R no VNS (I/R), and left mid-cervical VNS with both vagal trunks intact (LC-VNS), with left vagus nerve transection (LtVNX), with right vagus nerve transection (RtVNX) and with atropine pretreatment (Atropine), respectively...
May 9, 2018: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29744618/association-between-central-venous-pressure-as-assessed-by-echocardiography-left-ventricular-function-and-acute-cardio-renal-syndrome-in-patients-with-st-segment-elevation-myocardial-infarction
#18
Shafik Khoury, Arie Steinvil, Amir Gal-Oz, Gilad Margolis, Aviram Hochstatd, Yan Topilsky, Gad Keren, Yacov Shacham
BACKGROUND: Recent reports have demonstrated the adverse effects of venous congestion on renal function in patients with heart failure. None of these trials, however, has evaluated the effect of acute myocardial ischemia on the occurrence of acute kidney injury (AKI). METHODS: We conducted a retrospective study of 1336 ST segment elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention (PCI) between June 2012 and June 2016...
May 9, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29743926/6-gingerol-activates-pi3k-akt-and-inhibits-apoptosis-to-attenuate-myocardial-ischemia-reperfusion-injury
#19
Xiangwei Lv, Tongtong Xu, Qi Wu, Yao Zhou, Guidong Huang, Yongnan Xu, Guoqiang Zhong
6-Gingerol (6-G) is known to alleviate myocardial ischemia/reperfusion injury. However, the underlying molecular mechanisms of 6-G myocardial protection are not known. In this study, the protective effect of 6-G on ischemia/reperfusion (I/R) damage and whether such a mechanism was related to apoptosis inhibition and activation of phosphoinositide 3-kinases (PI3K)/serine/threonine kinase (Akt) signaling pathway were investigated. Rats were subjected to I/R in the presence or absence of 6-G and the changes of cardiac function, infarct size and histopathological changes, and the levels of cardiac troponin T, creatine kinase-MB, and myocardial apoptosis were examined...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29743898/pharmacological-protection-of-reperfusion-injury-in-st-segment-elevation-myocardial-infarction-gone-with-the-wind
#20
EDITORIAL
Elisabetta Tonet, Davide Bernucci, Giampaolo Morciano, Gianluca Campo
No abstract text is available yet for this article.
2018: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
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