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| Wei,X.J.; Han,M.; Yang,F.Y.; Wei,G.C.; Liang,Z.G.; Yao,H.; Ji,C.W.; Xie,R.S.; Gong,C.L.; Tian,Y.. |
| We investigated the biological significance of microRNA-126 (miR-126) expression in patients with atrial fibrillation (AF) and/or heart failure (HF) to examine the possible mechanism of miR-126-dependent AF and development of HF. A total of 103 patients were divided into three groups: AF group (18 men and 17 women, mean age: 65.62±12.72 years), HF group (17 men and 15 women, mean age: 63.95±19.71 years), and HF-AF group (20 men and 16 women, mean age: 66.56±14.37 years). Quantitative real-time PCR was used to measure relative miR-126 expression as calculated by the 2−ΔΔCt method. miR-126 was frequently downregulated in the 3 patient groups compared with controls. This reduction was significantly lower in permanent and persistent AF patients than in those... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: MicroRNA-126; Atrial fibrillation; Heart failure; Heart function indices; N-terminal prohormone brain natriuretic peptide (NT-proBNP). |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015001100983 |
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| Zhou,X.; Lv,W.; Zhang,W.; Ye,Y.; Li,Y.; Zhou,Q.; Zhang,J.; Xing,Q.; Lu,Y.; Zhang,L.; Wang,H.; Qin,W.; Tang,B.. |
| This meta-analysis compared the efficacy and safety of the contact force (CF)-sensing catheter and second-generation cryoballoon (CB) ablation for treating atrial fibrillation (AF). Six controlled clinical trials comparing ablation for AF using a CF-sensing catheter or second-generation CB were identified from PubMed, EMBASE, Cochrane Library, Wanfang Data, and China National Knowledge Infrastructure. The procedure duration was significantly lower in the CB group compared with that in the CF group [mean difference (MD)=29.4; 95%CI=17.84–40.96; P=0.01], whereas there was no difference between the groups for fluoroscopy duration (MD=0.59; 95%CI=–4.48–5.66; P=0.82). Moreover, there was no difference in the incidence of non-lethal complications (embolic event,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atrial fibrillation; Ablation; Contact force-sensing catheter; Second-generation cryoballoon; Meta-analysis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900607 |
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| Rao,F.; Deng,C.Y.; Zhang,Q.H.; Xue,Y.M.; Xiao,D.Z.; Kuang,S.J.; Lin,Q.X.; Shan,Z.X.; Liu,X.Y.; Zhu,J.N.; Yu,X.Y.; Wu,S.L.. |
| Macrophage migration inhibitory factor (MIF), a pleiotropic cytokine, plays an important role in the pathogenesis of atrial fibrillation; however, the upstream regulation of MIF in atrial myocytes remains unclear. In the present study, we investigated whether and how MIF is regulated in response to the renin-angiotensin system and oxidative stress in atrium myocytes (HL-1 cells). MIF protein and mRNA levels in HL-1 cells were assayed using immunofluorescence, real-time PCR, and Western blot. The result indicated that MIF was expressed in the cytoplasm of HL-1 cells. Hydrogen peroxide (H2O2), but not angiotensin II, stimulated MIF expression in HL-1 cells. H2O2-induced MIF protein and gene levels increased in a dose-dependent manner and were completely... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macrophage migration inhibitory factor; HL-1 cells; Hydrogen peroxide; Atrial fibrillation; Protein kinases. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900746 |
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| Li,Bolin; Ma,Honglan; Guo,Huihui; Liu,Peng; Wu,Yue; Fan,Lihong; Cao,Yumeng; Jian,Zhijie; Sun,Chaofeng; Li,Hongbing. |
| Left atrial diameter (LAD) has been considered an independent risk factor for atrial fibrillation (AF) relapse after pulmonary vein isolation (PVI). However, whether LAD or other factors are more predictive of late recurrence in patients with paroxysmal AF remains unclear. We aimed to evaluate the value of pulmonary vein (PV) parameters for predicting AF relapse 1 year after patients underwent cryoablation for paroxysmal AF. Ninety-seven patients with paroxysmal AF who underwent PVI successfully were included. PV parameters were measured through computed tomography scans prior to PVI. A total of 28 patients had recurrence of AF at one-year follow-up. The impact of several variables on recurrence was evaluated in multivariate analyses. LAD and the time from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atrial fibrillation; Cryoablation; Right inferior pulmonary vein; Pulmonary vein parameter. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019000900610 |
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| Quan,Dan; Zurcher,Kenneth. |
| Abstract Background Cardiotoxicity is a documented complication of Crotalinae envenomation. Reported cardiac complications following snake envenomation have included acute myocardial infarction, electrocardiogram abnormalities and arrhythmias. Few reports exist describing arrhythmia induced by viper envenomation and to our knowledge none describe arrhythmia induced by Crotalinae envenomation. This report concerns the first known case of atrial fibrillation precipitated by rattlesnake bite. Case presentation A 73-year-old Caucasian man with a past medical history of hypertension, hyperlipidemia, type 1 diabetes mellitus, and a baseline first-degree atrioventricular block presented to the emergency department following a rattlesnake bite to his left lower... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Crotalidae; Rattlesnake; Bite; Envenomation; Snakebite; Atrial fibrillation. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100503 |
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