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International Heart Journal

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https://read.qxmd.com/read/30745545/pulseless-electric-activity-with-pre-excitation
#1
Tsukasa Oshima, Katsuhito Fujiu, Jun Matsuda, Takumi Matsubara, Eriko Hasumi, Oguri Gaku, Toshiya Kojima, Issei Komuro
A 41-year-old man developed cardiac arrest. A resting 12-lead electrocardiogram showed a delta wave, suggestive of preexcitation syndrome. An electrophysiological test revealed the existence of inducible atrial fibrillation and a fasciculoventricular accessory pathway (FVAP). After these examinations, idiopathic ventricular arrhythmia was suspected. For evaluating concealed Brugada syndrome, pilsicainide was administered, which diminished the delta wave and no Brugada-like electrocardiogram was observed. Ventricular double extra-stimulation from the RV apex easily induced VF, which could not be defibrillated by an external defibrillator, and later stopped spontaneously...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745544/outcomes-of-transcatheter-aortic-valve-implantation-in-patients-with-cirrhosis
#2
Ryosuke Higuchi, Tetsuya Tobaru, Kenichi Hagiya, Mike Saji, Keitaro Mahara, Itaru Takamisawa, Jun Shimizu, Nobuo Iguchi, Shuichiro Takanashi, Morimasa Takayama, Mitsuaki Isobe
Cirrhosis is a significant adverse factor of cardiac surgeries. Transcatheter aortic valve implantation (TAVI) has evolved as a less invasive therapy for aortic stenosis, whereas detailed case analysis of TAVI in cirrhotic patients is limited.Among 444 consecutive patients who underwent TAVI in the Sakakibara Heart Institute between October 2013 and January 2018, we retrospectively reviewed 11 patients (2.5%) with cirrhosis. All outcomes were defined according to the Valve Academic Research Consortium-2 criteria...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745543/impact-of-the-temporal-distribution-of-coronary-artery-disease-progression-on-subsequent-consequences-in-patients-with-acute-coronary-syndrome
#3
Tatsuya Nakachi, Kazuki Fukui, Shingo Kato, Daisuke Kamimura, Masami Kosuge, Kazuo Kimura, Kouichi Tamura
The late consequences of acute coronary syndrome (ACS) have been underestimated. We hypothesized that the temporal distribution of the clinically silent coronary artery disease progression (CP) is associated with the subsequent consequences of ACS.We studied 243 patients (202 men, 64 ± 10 years) with ACS undergoing percutaneous coronary intervention (PCI) during initial hospitalization. All patients underwent serial coronary angiograms (CAGs) immediately before PCI and at 7 ± 3 and 60 ± 10 months after presentation...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745542/subcutaneous-implantable-cardioverter-defibrillator-lead-repositioning-for-preventing-inappropriate-shocks-due-to-myopotential-oversensing-in-a-post-fulminant-myocarditis-patient
#4
Takehito Sasaki, Kohki Nakamura, Shigeto Naito
A 28-year-old female presented with fulminant lymphocytic myocarditis. She developed cardiogenic shock, frequent sustained ventricular tachycardia, and fibrillation (VT and VF). The left ventricular ejection fraction improved from 5% to 40% after medical therapy, but the right ventricular systolic dysfunction and enlargement persisted. In addition, sustained VTs, requiring direct current cardioversion, occurred during oral administration of amiodarone following intravenous amiodarone, even after percutaneous stellate ganglion block...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745541/changes-in-autophagy-levels-in-rat-myocardium-during-exercise-preconditioning-initiated-cardioprotective-effects
#5
Ji-Yong Li, Shan-Shan Pan, Jia-Yin Wang, Jiao Lu
The role of autophagy in the cardioprotection conferred by ischemic preconditioning (IPC) has been well described. This study aimed to investigate the changes in autophagy levels during the cardioprotective effects initiated by exercise preconditioning (EP).Rats were randomly divided into 4 groups: group C (control), group EP, group EE (exhaustive exercise), and group EP + EE (EP pretreatment at 0.5 hours before EE). The EP protocol included 4 periods of 10 minutes of treadmill running each at 30 m/minute with intervening 10 minute periods of rest...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745540/serum-circulating-mir-150-is-a-predictor-of-post-acute-myocardial-infarction-heart-failure
#6
Xiaoping Lin, Sichen Zhang, Zhaoxia Huo
Patients with ischemic heart disease are associated with poor prognosis, and their number has increased globally. Therefore, biomarkers that could predict post-acute myocardial infarction (AMI) heart failure (HF) would be helpful to guide appropriate treatment. Based on the diagnosis on admission and results of echocardiogram performed on admission and 1 year after discharge, the current study recruited 54 patients with post-AMI HF, 59 patients with post-AMI non-HF, and 59 healthy controls. Eight candidate microRNAs (miRs) were screened through real-time quantitative PCR...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745539/intravenous-immunoglobulin-therapy-for-acute-myocarditis-in-children-and-adults
#7
Xin Huang, Yufei Sun, Guanhua Su, Yu Li, Xinxin Shuai
The efficacy of intravenous immunoglobulin (IVIG) in the treatment of acute myocarditis remains controversial. The aim of this study was to conduct a meta-analysis to assess the efficacy of IVIG in children and adults with acute myocarditis.We searched PubMed, Scopus, Embase, Medline, the Cochrane Library, Google Scholar, and the ClinicalTrials.gov website. Eligible studies were clinical trials of patients with acute myocarditis who received IVIG therapy. Pooled odds ratios (ORs) and 95% confidence intervals (CIs) were used to estimate the outcomes...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745538/a-decision-tree-based-survival-analysis-of-patients-with-a-history-of-inappropriate-implantable-cardioverter-defibrillator-therapy
#8
Masaru Yamamoto, Katsunori Okajima, Akira Shimane, Tomoya Ozawa, Itsuro Morishima, Toru Asai, Masahiko Takagi, Atsunobu Kasai, Eitaro Fujii, Ken Kiyono, Eiichi Watanabe, Yukio Ozaki
Implantable cardioverter-defibrillators (ICDs) improve survival in patients who are at risk of sudden death. However, inappropriate therapy is commonly given to ICD recipients, and this situation may be associated with an increased risk of death. This study aimed to construct a risk stratification scheme by using decision tree analysis in patients who received inappropriate ICD therapy.Mortality was calculated from a retrospective data analysis of a multicenter cohort involving 417 ICD recipients. Inappropriate therapy was defined as therapy for nonventricular arrhythmias, including sinus tachycardia, supraventricular tachycardia, atrial fibrillation/flutter, oversensing, and lead failure...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745537/thrombospondin-2-as-a-potential-risk-factor-in-a-general-population
#9
Nagisa Morikawa, Hisashi Adachi, Mika Enomoto, Ako Fukami, Eita Kumagai, Sachiko Nakamura, Yume Nohara, Erika Nakao, Shoko Kono, Tomoko Tsuru, Akiko Sakaue, Hitoshi Hamamura, Yoshihiro Fukumoto
Serum thrombospondin-2 (TSP-2) is a glycoprotein expressed in the extracellular matrix (ECM), which increases during tissue remodeling. It has been shown in recent studies that TSP-2 is a useful predictor of cardiovascular death in patients with heart failure (HF). However, the clinical importance of serum TSP-2 levels in a general population is still unknown. Therefore, we aimed to clarify the association between TSP-2 and clinical risk factors. A periodic epidemiological survey was performed in a community dwelling in the town of Uku, Nagasaki, Japan...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745536/association-of-isoprostanes-related-oxidative-stress-with-vulnerability-of-culprit-lesions-in-diabetic-patients-with-acute-coronary-syndrome
#10
Gong Su, Tao Zhang, Hong-Xia Yang, Wen-Long Dai, Tao Wang, Lei Tian, Shu-Hua Mi
Urinary excretion of 8-iso-prostaglandin F2α (8-iso-PGF2α ), a reliable biomarker for enhanced oxidant stress in vivo, has been described in association with diabetes and coronary heart disease. The aim of this study was to evaluate the relationship between urinary 8-iso-PGF2α levels and the characteristics of coronary culprit lesion in diabetic patients with acute coronary syndrome (ACS). A total of 79 diabetic patients with ACS were included. iMAP intravascular ultrasound (iMAP-IVUS) was performed to evaluate the characteristics of culprit plaques...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745535/predictive-roles-of-neutrophil-to-lymphocyte-ratio-and-c-reactive-protein-in-patients-with-calcific-aortic-valve-disease
#11
Jian Song, Qiang Zheng, Xiaochun Ma, Qian Zhang, Zhenqiang Xu, Chengwei Zou, Zhengjun Wang
The neutrophil-to-lymphocyte ratio (NLR) and C-reactive protein (CRP) are emerging indirect blood markers to roughly reflect the inflammation level in our body while some pathological changes occurring in aortic valve tissue. Few recent studies demonstrated that NLR is related to calcific aortic valve disease (CAVD). However, the extent of the relationship between them and the impact of CRP on CAVD are not clear. This study aimed to investigate the diagnostic influence and surgical predictive effect of NLR and CRP on CAVD...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745534/modulation-of-the-proliferation-apoptosis-balance-of-vascular-smooth-muscle-cells-in-atherosclerosis-by-lncrna-meg3-via-regulation-of-mir-26a-smad1-axis
#12
Yang Bai, Qiangnu Zhang, Yijiang Su, Zhenye Pu, Kunsheng Li
The balance between proliferation and apoptosis of vascular smooth muscle cells (VSMCs) plays a critical role in the initiation of atherosclerosis. LncRNA-MEG3 is involved in the pathophysiology of atherosclerosis through regulation of endothelial cell proliferation and migration. Its effect on the dysfunction of VSMCs and the corresponding mechanisms are actively researched. In this study, we observed that downregulated lncRNA-MEG3 expression was inversely correlated with the microRNA-26a level in coronary artery disease tissues...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745533/antithrombotic-treatment-may-reduce-mortality-among-new-onset-atrial-fibrillation-patients-with-gray-zone-risk-of-stroke
#13
Chien-Ming Cheng, Ching-Heng Lin, Pesus Chou, Gwo-Ping Jong
In clinical practice, some atrial fibrillation (AF) patients were classified as having low and moderate stroke risk by the CHADS2 score (≤ 1) in 2001 but in 2012 they were not truly classified as low risk of stroke according to the CHA2 DS2 -VASc score (≥ 2) (defined gray zone). Therefore, a treatment gap exists in gray zone AF patients. This study aimed to evaluate whether gray zone AF patients could benefit from reduced all-cause mortality under antithrombotic treatment. This was a longitudinal cohort study performed using data from claim forms submitted to the Taiwan Bureau of National Health Insurance from January 2000 to December 2011...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745532/different-clinical-presentation-and-tissue-characterization-in-a-monozygotic-twin-pair-with-myh7-mutation-related-hypertrophic-cardiomyopathy
#14
Jie Wang, Weihao Li, Yuchi Han, Yucheng Chen
This case report demonstrates a pair of monozygotic twins with hypertrophic cardiomyopathy (HCM) carrying the same pathogenic mutation of MYH7 (p.G768R; c.2302G>A), detected by whole exome and Sanger genetic sequencing methods. On multi-modality imaging, they were reported to have similar, but not identical, morphologic expression. Particularly, the clinical presentation and tissue characteristics were not the same. Late gadolinium enhancement (LGE) and T1 mapping of cardiac magnetic resonance showed different extents of myocardial fibrotic characteristics in the twins (twin A: 16...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745531/linagliptin-suppresses-electrical-and-structural-remodeling-in-the-isoproterenol-induced-myocardial-injury-model
#15
Naruya Ishizue, Shinichi Niwano, Hiroe Niwano, Jun Oikawa, Hironori Nakamura, Takehiro Hashikata, Tazuru Igarashi, Tamami Fujiishi, Tomoharu Yoshizawa, Jun Kishihara, Akira Satoh, Hidehira Fukaya, Junya Ako
The effect of DPP-4 inhibitor on the electrical and structural remodeling in myocardial injury has not been evaluated. We hypothesized that linagliptin, DPP-4 inhibitor, suppresses myocardial remodeling in the isoproterenol (ISP)-induced myocardial injury model.Sprague-Dawley rats were assigned to 3 groups: 1) sham group, 2) ISP group (subcutaneous ISP injection of 70 mg/kg), and 3) ISP + linagliptin (ISP + Lin) (5 mg/kg/day, p.o.) group. Serum was sampled on day 1 (acute phase) and day 7 (sub-acute phase) to evaluate derivatives of reactive oxidative metabolites (d-ROMs)...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745530/cyclin-dependent-kinase-1-cdk1-activates-cardiac-fibroblasts-via-directly-phosphorylating-paxillin-at-ser244
#16
Chen Sai, Jiang Yunhan, Jian Zhao, Zhu Yu, Zhu Yun, Cao Zhezhe, Tang Fuqin, Ma Ruiyan, Xiao Yingbin
Atrial fibrillation has caused severe burden for people worldwide. Differentiation of fibroblasts into myofibroblasts, and consequent progress in atrial structural remodeling have been considered the basis for persistent atrial fibrillation, yet little is known about the molecular mechanisms underlying the process. Here, we show that cyclin-dependent kinase 1 (CDK1) is activated in atrial fibroblasts from patients with atrial fibrillation (AFPAF) and in platelet derived growth factor BB (PDGF-BB)-treated atrial fibroblasts from patients with sinus rhythm (AFPSR)...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745529/emodin-attenuates-lipopolysaccharide-induced-injury-via-down-regulation-of-mir-223-in-h9c2-cells
#17
Yuping Yang, Zijun Jiang, Dong Zhuge
Emodin is a natural product extracted from Rheum palmatum. There are few recent studies on emodin in the treatment of myocarditis. This study aimed to investigate the effect of emodin on lipopolysaccharide (LPS)-induced inflammatory injury in cardiomyocytes. H9c2 cells were treated with 10 μM of LPS and different concentrations (0, 1, 5, 10, 15, and 20 μM) of emodin. The expression of miR-223 was changed by transient transfection. Thereafter, cell viability, apoptosis, the expression of CyclinD1 and Jnk-associated proteins, and the release of pro-inflammatory factors were assessed by cell Counting Kit-8, flow cytometry analysis, quantitative real-time polymerase chain reaction Western blot, and enzyme-linked immunosorbent assay respectively...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30745528/stat3-phosphorylation-mediating-dmso-s-function-on-fetal-cardiomyocyte-proliferation-with-developmental-changes
#18
Haitao Hu, Jin Xue, Renshun Dong, Yanan Zhao, Chunyan Song, Hongjian Zhao, Jürgen Hescheler, Yan Zhang, Huamin Liang
Endogenous cardiac regeneration has been focused for decades as a potential therapy for heart diseases with cell loss, and dimethyl sulfoxide (DMSO) has been proposed as a treatment for many diseases. In this study, we aimed to investigate the function of DMSO on fetal cardiomyocyte proliferation. By tracing BrdU+ /α actinin+ cells or Ki67+ /α actinin+ cells with immunohistochemical staining, we found that DMSO remarkably promoted fetal cardiomyocytes proliferation, and at the late developmental stage (LDS), such effects were more efficient than that at early developmental stage (EDS)...
February 8, 2019: International Heart Journal
https://read.qxmd.com/read/30626769/rare-simultaneous-left-and-right-sided-native-valve-infective-endocarditis-caused-by-rare-bacterium
#19
Jian-Hong Pan
Simultaneous left and right-sided native valve infective endocarditis (IE) is rare. Staphylococcus aureus was the predominant organism for bilateral IE. Shunt diseases are common risk factors of both-sided IE. Streptococcus anginosus (S. anginosus) is usually associated with pyogenic infections, but rarely a cause of IE. Here we present an extremely rare case of simultaneous left and right-sided native valve IE affecting the mitral and tricuspid valves caused by S. anginosus in an adult patient that has not been reported in the literature previously, particularly without the most frequent predisposing factors of IE...
January 10, 2019: International Heart Journal
https://read.qxmd.com/read/30626768/assessment-of-unicuspid-aortic-valve-stenosis-using-multimodality-imaging-x-ray-radiography-and-raman-analysis
#20
Hsiao-Huang Chang, Ching-Li Cheng, Wei-Chen Wang, Pei-Jung Huang, Shan-Yang Lin
Unicuspid aortic valve (UAV) is an extremely rare form of congenital cardiac malformation, leading to aortic stenosis (AS), aortic regurgitation (AR), or both. We report the case of a 55-year-old man with unicommissural UAV associated with severe AS and mild AR using different multimodality imaging approaches. The excised UAV isolated after aortic valve replacement exhibited an eccentric "teardrop" opening with a slit-shaped unicommissural structure. Raman spectroscopic results indicated that 3 unevenly distributed components were deposited on the surface of the UAV, in which calcium hydroxyapatite and type-B carbonate apatite were the predominate components deposited on the surface, leading to severe AS formation...
January 10, 2019: International Heart Journal
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