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silent ischemia

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https://www.readbyqxmd.com/read/29792215/adding-left-atrial-appendage-closure-to-open-heart-surgery-provides-protection-from-ischemic-brain-injury-six-years-after-surgery-independently-of-atrial-fibrillation-history-the-laacs-randomized-study
#1
Jesper Park-Hansen, Susanne J V Holme, Akhmadjon Irmukhamedov, Christian L Carranza, Anders M Greve, Gina Al-Farra, Robert G C Riis, Brian Nilsson, Johan S R Clausen, Anne S Nørskov, Christina R Kruuse, Egill Rostrup, Helena Dominguez
BACKGROUND: Open heart surgery is associated with high occurrence of atrial fibrillation (AF), subsequently increasing the risk of post-operative ischemic stroke. Concomitant with open heart surgery, a cardiac ablation procedure is commonly performed in patients with known AF, often followed by left atrial appendage closure with surgery (LAACS). However, the protective effect of LAACS on the risk of cerebral ischemia following cardiac surgery remains controversial. We have studied whether LAACS in addition to open heart surgery protects against post-operative ischemic brain injury regardless of a previous AF diagnosis...
May 23, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29785469/early-detection-of-cerebral-infarction-after-focal-ischemia-using-a-new-mri-indicator
#2
Yukako Nakajo, Qiang Zhao, Jun-Ichiro Enmi, Hidehiro Iida, Jun C Takahashi, Hiroharu Kataoka, Keiko Yamato, Hiroji Yanamoto
Prolongation of the T2 relaxation time, an increase in T2-weighted signal intensity (T2-SI), and a decrease in the apparent diffusion coefficient (ADC) calculated from diffusion-weighted images (DWI) on magnetic resonance imaging (MRI) are conventional indicators of the vasogenic (interstitial) or cytotoxic (cellular) cerebral edema that develops after ischemic stroke. However, these parameters obtained on stroke imaging have not given us a precise threshold at which we can determine the viability or vulnerability of the tissue, allowing us to decide on an intervention that will help reversible tissue in the acute phase...
May 21, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29772320/predictive-factors-of-silent-brain-infarcts-after-asymptomatic-carotid-endarteriectomy
#3
Rémy Pascot, Benjamin Parat, Yann Le Teurnier, Gilles Godet, Jean-Yves Gauvrit, Yann Gouëffic, Eric Steinmetz, Alain Cardon, Adrien Kaladji
BACKGROUND: The optimization of medical treatment regularly challenges the role of carotid surgery for asymptomatic patients. Current research seeks to determine which of these patients will benefit most from surgery. The goal of this study was to identify in a multi-center study, using MRI, the risk factors for postoperative silent cerebral ischemic lesions after carotid surgery for asymptomatic stenosis METHODS: The multicenter, retrospective study included patients with asymptomatic severe carotid stenosis suitable for surgical treatment and who did not have a history of cerebral ischemia...
May 14, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29747917/elective-coronary-revascularization-procedures-in-patients-with-stable-coronary-artery-disease-incidence-determinants-and-outcome-from-the-coronor-study
#4
Martial Hamon, Gilles Lemesle, Thibaud Meurice, Olivier Tricot, Nicolas Lamblin, Christophe Bauters
OBJECTIVES: The authors sought to describe the incidence, determinants, and outcome of elective coronary revascularization (ECR) in patients with stable coronary artery disease (CAD). BACKGROUND: Observational data are lacking regarding the practice of ECR in patients with stable CAD receiving modern secondary prevention. METHODS: The authors analyzed coronary revascularization procedures performed during a 5-year follow-up in 4,094 stable CAD outpatients included in the prospective multicenter CORONOR (Suivi d'une cohorte de patients COROnariens stables en région NORd-Pas-de-Calais) registry...
May 14, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29713551/a-combination-of-tachycardia-mediated-heart-failure-and-coronary-artery-vasospasm-induced-silent-myocardial-infarction-in-a-patient-with-severe-thyrotoxicosis
#5
Serena Sert Kim Khoo, Chong Mow Chu, Yin Khet Fung
Severe thyrotoxicosis can present with a myriad of cardiovascular complications. It may be mild features such as palpitations, tachycardia, and exertional dyspnea or may progress to life-threatening consequences such as atrial fibrillation, tachyarrhythmias, heart failure, myocardial infarction, and shock. In rare cases, they may present with myocardial ischemia secondary to coronary artery vasospasm. We report a case of a 59-year-old Malay gentleman who presented with fast atrial fibrillation and tachycardia-mediated heart failure that evolved to a silent myocardial infarction secondary to severe coronary artery vasospasm with undiagnosed severe thyrotoxicosis...
2018: Case Reports in Cardiology
https://www.readbyqxmd.com/read/29680964/berberine-protects-renal-tubular-cells-against-hypoxia-reoxygenation-injury-via-the-sirt1-p53-pathway
#6
Yuanbang Lin, Mingwei Sheng, Yijie Ding, Nan Zhang, Yayue Song, Hongyin Du, Ning Lu, Wenli Yu
Berberine (BBR) has been demonstrated to protect against renal ischemia/reperfusion injury; however, the underlying molecular mechanism is largely unknown. In the present study, we examined the role of silent information regulator 1 (Sirt1)/p53 in the protective effect of BBR on hypoxia/reoxygenation (H/R)-mediated mitochondrial dysfunction in rat renal tubular epithelial cells (NRK-52E cells). NRK-52E cells were preconditioned with small interfering RNA targeting Sirt1 (Sirt1-siRNA) and BBR before subjected to H/R...
April 21, 2018: Journal of Natural Medicines
https://www.readbyqxmd.com/read/29560629/-acupuncture-reduces-acute-cerebral-ischemia-by-suppressing-local-and-peripheral-inflammation-and-regulating-expression-of-cerebral-protein-silent-information-regulator-factor-2-related-enzyme-1-and-nuclear-factor-%C3%AE%C2%BAb-in-rats
#7
Qiong Wang, Wei Huang, Hong-Yang Wu
OBJECTIVE: To observe the effect of acupuncture on the expression of silent information regulator factor 2-related enzyme 1 (SIRT 1) and nuclear factor-κB (NF-κB) in rats with acute cerebral ischemia (ACI), so as to explore its mechanisms underlying improvement of ACI. METHODS: One hundred female SD rats were randomly divided into 5 groups: normal control (normal), sham-operation (sham), model, non-acupoint and acupoint, with 20 rats in each. The ACI model was established by occlusion (electric coagulation) of the middle cerebral artery after craniotomy...
March 25, 2018: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29540277/stent-less-percutaneous-coronary-intervention-using-rotational-atherectomy-and-drug-coated-balloon-a-case-series-and-a-mini-review
#8
REVIEW
Jun Shiraishi, Nariko Koshi, Yuki Matsubara, Tetsuro Nishimura, Akira Shikuma, Keisuke Shoji, Daisuke Ito, Masayoshi Kimura, Eigo Kishita, Yusuke Nakagawa, Masayuki Hyogo, Takahisa Sawada
BACKGROUND: Experiences of rotational atherectomy (RA) followed by drug-coated balloon (DCB) dilation alone (RA/DCB) for de novo coronary artery lesion have been limited. CASE SERIES: Case 1 (65 year-old male) with silent myocardial ischemia and hemodialysis had old anterior myocardial infarction and intact LM/LCx, and underwent RA/DCB against a diffuse calcified lesion in the proximal LAD and a tandem lesion in the proximal RCA. Case 2 (88 year-old female) with post-infarction unstable angina had severe thrombocytopenia and anemia due to myelodysplastic syndrome (platelet 6000/μL, hemoglobin 8...
February 12, 2018: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29527709/drug-coated-balloons-for-de-novo-lesions-in-small-coronary-arteries-rationale-and-design-of-basket-small-2
#9
Nicole Gilgen, Ahmed Farah, Bruno Scheller, Marc-Alexander Ohlow, Norman Mangner, Daniel Weilenmann, Jochen Wöhrle, Peiman Jamshidi, Gregor Leibundgut, Sven Möbius-Winkler, Robert Zweiker, Florian Krackhardt, Christian Butter, Leonhard Bruch, Christoph Kaiser, Andreas Hoffmann, Peter Rickenbacher, Christian Mueller, Frank-Peter Stephan, Michael Coslovsky, Raban Jeger
The treatment of coronary small vessel disease (SVD) remains an unresolved issue. Drug-eluting stents (DES) have limited efficacy due to increased rates of instent-restenosis, mainly caused by late lumen loss. Drug-coated balloons (DCB) are a promising technique because native vessels remain structurally unchanged. Basel Stent Kosten-Effektivitäts Trial: Drug-Coated Balloons vs. Drug-Eluting Stents in Small Vessel Interventions (BASKET-SMALL 2) is a multicenter, randomized, controlled, noninferiority trial of DCB vs DES in native SVD for clinical endpoints...
March 11, 2018: Clinical Cardiology
https://www.readbyqxmd.com/read/29515560/investigation-of-endogenous-retrovirus-sequences-in-the-neighborhood-of-genes-up-regulated-in-a-neuroblastoma-model-after-treatment-with-hypoxia-mimetic-cobalt-chloride
#10
Christine Brütting, Harini Narasimhan, Frank Hoffmann, Malte E Kornhuber, Martin S Staege, Alexander Emmer
Human endogenous retroviruses (ERVs) have been found to be associated with different diseases, e.g., multiple sclerosis (MS). Most human ERVs integrated in our genome are not competent to replicate and these sequences are presumably silent. However, transcription of human ERVs can be reactivated, e.g., by hypoxia. Interestingly, MS has been linked to hypoxia since decades. As some patterns of demyelination are similar to white matter ischemia, hypoxic damage is discussed. Therefore, we are interested in the association between hypoxia and ERVs...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29509269/curcumin-attenuates-ir-induced-myocardial-injury-by-activating-sirt3
#11
R Wang, J-Y Zhang, M Zhang, M-G Zhai, S-Y Di, Q-H Han, Y-P Jia, M Sun, H-L Liang
OBJECTIVE: Ischemia-reperfusion (IR) injury remains an unresolved and complicated situation in clinical practice. In this study, H9c2 cardiomyocytes were subjected to curcumin (Cur) treatment in the absence or presence of the silent information regulator 3 (SIRT3) inhibitor 3-TYP and were then subjected to IR. MATERIALS AND METHODS: H9c2 cells and male Sprague-Dawley (SD) rats were cultured. MTT assay was performed to assess H9c2 cell viability. Cellular apoptosis was analyzed by TUNEL assay...
February 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29506688/exercise-electrocardiogram-in-middle-aged-and-older-leisure-time-sportsmen-100-exercise-tests-would-be-enough-to-identify-one-silent-myocardial-ischemia-at-risk-for-cardiac-event
#12
David Hupin, Pascal Edouard, Mathieu Oriol, Jari Laukkanen, Pierre Abraham, Stéphane Doutreleau, Jean-Michel Guy, François Carré, Jean-Claude Barthélémy, Frédéric Roche, Jean-Claude Chatard
BACKGROUND: The importance of exercise electrocardiogram (ECG) has been controversial in the prevention of cardiac events among sportsmen. The aim of this study was to determine the frequency of silent myocardial ischemia (SMI) from an exercise ECG and its relationship with induced coronary angiographic assessment and potentially preventable cardiac events. METHODS: This prospective cohort study included leisure time asymptomatic sportsmen over 35years old, referred from 2011 to 2014 in the Sports Medicine Unit of the University Hospital of Saint-Etienne...
April 15, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29422863/-n-n-butyl-haloperidol-iodide-a-derivative-of-the-anti-psychotic-haloperidol-antagonizes-hypoxia-reoxygenation-injury-by-inhibiting-an-egr-1-ros-positive-feedback-loop-in-h9c2-cells
#13
Ting Sun, Yanmei Zhang, Shuping Zhong, Fenfei Gao, Yicun Chen, Bin Wang, Wenfeng Cai, Zhaojing Zhang, Weiqiu Li, Shishi Lu, Fuchun Zheng, Ganggang Shi
Early growth response-1 (Egr-1), a transcription factor which often underlies the molecular basis of myocardial ischemia/reperfusion (I/R) injury, and oxidative stress, is key to myocardial I/R injury. Silent information regulator of transcription 1(SIRT1) not only interacts with and is inhibited by Egr-1, but also downregulates reactive oxygen species (ROS) via the Forkhead box O1(FOXO1)/manganese superoxide dismutase (Mn-SOD) signaling pathway. N -n-butyl haloperidol iodide (F2 ), a new patented compound, protects the myocardium against myocardial I/R injury in various animal I/R models in vivo and various heart-derived cell hypoxia/reoxygenation (H/R) models in vitro ...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29359025/cardiac-autonomic-neuropathy-risk-factors-diagnosis-and-treatment
#14
REVIEW
Victoria A Serhiyenko, Alexandr A Serhiyenko
Cardiac autonomic neuropathy (CAN) is a serious complication of diabetes mellitus (DM) that is strongly associated with approximately five-fold increased risk of cardiovascular mortality. CAN manifests in a spectrum of things, ranging from resting tachycardia and fixed heart rate (HR) to development of "silent" myocardial infarction. Clinical correlates or risk markers for CAN are age, DM duration, glycemic control, hypertension, and dyslipidemia (DLP), development of other microvascular complications...
January 15, 2018: World Journal of Diabetes
https://www.readbyqxmd.com/read/29345588/the-role-of-percutaneous-coronary-intervention-in-the-treatment-of-chronic-total-occlusions-rationale-and-review-of-the-literature
#15
Harsh Agrawal, Richard Lange, Ruben Montanez, Soma Wali, Khan Omar Mohammad, Subrata Kar, Mohamed Teleb, Debabrata Mukherjee
BACKGROUND: Chronic total occlusion (CTO) of a coronary artery is defined as an occluded segment with no antegrade flow and a known or estimated duration of at least 12 weeks. OBJECTIVE: We considered the current literature describing the indications and clinical outcomes for de-novo CTO- percutaneous coronary intervention (PCI), and discuss the role of CTO-PCI and future directions for this procedure. METHOD: Databases (PubMed, the Cochrane Library, Embase, EBSCO, Web of Science, and CINAHL were searched and relevant studies of CTO-PCI were selected for review...
January 16, 2018: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/29305703/cardiac-ischemia-insights-from-computational-models
#16
REVIEW
Axel Loewe, Eike Moritz Wülfers, Gunnar Seemann
BACKGROUND: Complementary to clinical and experimental studies, computational cardiac modeling serves to obtain a comprehensive understanding of the cardiovascular system in order to analyze dysfunction, evaluate existing, and develop novel treatment strategies. OBJECTIVES: We describe the basics of multiscale computational modeling of cardiac electrophysiology from the molecular ion channel to the whole body scale. By modeling cardiac ischemia, we illustrate how in silico experiments can contribute to our understanding of how the pathophysiological mechanisms translate into changes observed in diagnostic tools such as the electrocardiogram (ECG)...
March 2018: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/29296058/myocardial-perfusion-abnormalities-in-asymptomatic-type-2-diabetic-patients
#17
Ghada Al-Humaidi, Ismet Sarikaya, Abdelhamid H Elgazzar, Azu Owunwanne
Objective: The prevalence of coronary artery disease (CAD) is high in patients with diabetes. Because ischemia and infarction are often silent in diabetic patients, diagnosis of CAD occurs inevitably late. It is essential to identify the presence of CAD in diabetic patients to start early treatment. Therefore, the aim of this study was to determine the prevalence of abnormal myocardial perfusion in asymptomatic type 2 diabetic patients using myocardial perfusion imaging. Methods: Fifty-nine patients with type 2 diabetes, who did not have any history of CAD, but did have risk factors underwent myocardial perfusion single-photon emission computed tomography (SPECT) imaging using99m Tc-tetrofosmin and a 2-day stress-rest protocol...
January 2018: Journal of the Saudi Heart Association
https://www.readbyqxmd.com/read/29220696/cardioprotection-of-cape-ono-2-against-myocardial-ischemia-reperfusion-induced-ros-generation-via-regulating-the-sirt1-enos-nf-%C3%AE%C2%BAb-pathway-in-vivo-and-in-vitro
#18
Dejuan Li, Xiaoling Wang, Qin Huang, Sai Li, You Zhou, Zhubo Li
Caffeic acid phenethyl ester (CAPE) could ameliorate myocardial ischemia/reperfusion injury (MIRI) by various mechanisms, but there hadn't been any reports on that CAPE could regulate silent information regulator 1 (SIRT1) and endothelial nitric oxide synthase (eNOS) to exert cardioprotective effect. The present study aimed to investigate the cardioprotective potential of caffeic acid o-nitro phenethyl ester (CAPE-oNO2 ) on MIRI and the possible mechanism based on the positive control of CAPE. The SD rats were subjected to left coronary artery ischemia /reperfusion (IR) and the H9c2 cell cultured in hypoxia/reoxygenation (HR) to induce the MIRI model...
May 2018: Redox Biology
https://www.readbyqxmd.com/read/29205487/the-impact-of-unfractionated-heparin-or-bivalirudin-on-patients-with-stable-coronary-artery-disease-undergoing-percutaneous-coronary-intervention
#19
Fabio V Lima, Luis Gruberg, Usman Aslam, Melissa Ramgadoo, Kydanis Clase, Alessandra Trevisan, Allen Jeremias
OBJECTIVES: To compare bleeding and clinical events of patients with stable angina or silent ischemia undergoing percutaneous coronary intervention (PCI) treated with unfractionated heparin (UFH) or bivalirudin. BACKGROUND: Few direct comparisons between UFH monotherapy versus bivalirudin exist for patients with stable ischemic heart disease undergoing PCI. METHODS: A prospective, investigator-initiated, single-center, single-blinded, randomized trial of UFH versus bivalirudin was conducted...
December 4, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/29199266/diagnosis-and-management-of-spontaneously-recanalized-coronary-thrombus-guided-by-optical-coherence-tomography-lessons-from-the-french-lotus-root-registry
#20
Géraud Souteyrand, Mathieu Valladier, Nicolas Amabile, François Derimay, Brahim Harbaoui, Pierre Leddet, Pierre Barnay, Guilhem Malcles, Aurelien Mulliez, Colin Berry, Romain Eschalier, Nicolas Combaret, Pascal Motreff
BACKGROUND: Spontaneous reanalyzed coronary thrombus (SRCT) has been reported in autopsy series, but little is known about SRCT, and it is potentially under-diagnosed in clinical practice.Methods and Results:SRCT identified on OCT were included in a French multicenter series, the Lotus Root French Registry. A total of 34 SRCT were identified on OCT in 33 patients (23 male; median age, 56 years; IQR, 52-65 years); 23/33 patients (70%) presented with angina pectoris and/or dyspnea. Three angiographic aspects were distinguished retrospectively: braided, pseudo-dissected, and hazy...
February 23, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
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