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Condition: Atrial Fibrillation
Nutrition: Calcium

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Total 60 results found since Jan 2013.

Estimating the Prevalence, Clinical Characteristics, and Treatment Patterns of Hypertrophic Cardiomyopathy in Japan: A Nationwide Medical Claims Database Study
CONCLUSIONS: This study provides important information on the current epidemiological and clinical characteristics of HCM in Japan.PMID:36208832 | DOI:10.1016/j.jjcc.2022.09.015
Source: Journal of Cardiology - October 8, 2022 Category: Cardiology Authors: Naoki Terasaka Dionysis Spanopoulos Hidetaka Miyagoshi Toru Kubo Hiroaki Kitaoka Source Type: research

Cardiovascular Event Prediction by Machine Learning: The Multi-Ethnic Study of Atherosclerosis.
Conclusions: Machine learning in conjunction with deep phenotyping improve prediction accuracy in cardiovascular event prediction in an initially asymptomatic population. These methods may lead to greater insights regarding subclinical disease markers without apriori assumptions of causality. PMID: 28794054 [PubMed - as supplied by publisher]
Source: Circulation Research - August 9, 2017 Category: Cardiology Authors: Ambale-Venkatesh B, Yang X, Wu CO, Liu K, Hundley WG, McClelland RL, Gomes AS, Folsom AR, Shea S, Guallar E, Bluemke DA, Lima JA Tags: Circ Res Source Type: research

Aging Modulates the Substrate and Triggers Remodeling in Atrial Fibrillation.
Abstract Aging plays a critical role in the genesis of atrial fibrillation (AF) and also increases the risks of cardiac dysfunction and stroke in AF patients. AF is caused by increased AF triggering from abnormalities of the thoracic vein and/or modulated substrate (atrial) with enhancement of AF maintenance. Clinical and laboratory evidence indicates that aging is significant in the creation of atrial electrical and structural remodeling that leads to increased susceptibility to AF occurrence. Aging is commonly associated with cardiovascular comorbidities, oxidative stress, calcium dysregulation, atrial myopathy ...
Source: Circulation Journal - September 14, 2017 Category: Cardiology Authors: Lin YK, Chen YA, Lee TI, Chen YC, Chen SA, Chen YJ Tags: Circ J Source Type: research

Adverse outcomes in patients with atrial fibrillation and peripheral arterial disease: a report from the EURObservational research programme pilot survey on atrial fibrillation
ConclusionPeripheral arterial disease is prevalent in 11% of AF patients and related to various atherosclerotic risk factors. Even if PAD is associated with higher risk of all-cause death on univariate analysis, this risk was significantly lowered and was no longer evident after adjusting for the use of CV prevention drugs.
Source: Europace - December 9, 2016 Category: Cardiology Source Type: research

Clinical characteristics and cardiovascular outcomes in patients with atrial fibrillation receiving rhythm-control therapy: the Fushimi AF Registry
AbstractManagement of atrial fibrillation (AF) with current rhythm-control therapy has an uncertain impact on outcomes. Among 3731 patients in the Fushimi AF Registry, a community-based prospective survey of AF patients in Fushimi-ku, Kyoto, we investigated the characteristics and outcomes in 478 patients receiving rhythm-control therapy (anti-arrhythmic drug and/or catheter ablation) alone, with 1279 patients receiving rate-control therapy (beta-blockers, calcium channel blockers, and digoxin) alone serving as a reference. The Rhythm-control group, 26% of which had prior catheter ablation, was younger (70.5  ± 10.8 v...
Source: Heart and Vessels - May 24, 2018 Category: Cardiology Source Type: research

Factor Xa inhibition by rivaroxaban regulates fibrogenesis in human atrial fibroblasts with modulation of nitric oxide synthesis and calcium homeostasis
In this study, we evaluated whether rivaroxaban regulates atrial fibroblast activity and its underlying mechanisms.
Source: Journal of Molecular and Cellular Cardiology - September 10, 2018 Category: Cytology Authors: Cheng-Chih Chung, Yung-Kuo Lin, Yao-Chang Chen, Yu-Hsun Kao, Yung-Hsin Yeh, Yi-Jen Chen Source Type: research

Assessment of Non-vitamin K Oral Anticoagulants Use in a Tertiary Care Center in the USA: A Chart Review of 909 Patients
ConclusionA significant number of patients received NOACs at doses inconsistent with the package labeling or had clinically significant drug –drug interactions with NOACs. Efforts are warranted to improve appropriate dosing and avoid significant drug interactions.
Source: American Journal of Cardiovascular Drugs - November 8, 2018 Category: Cardiology Source Type: research

Hypertension in the elderly.
Abstract After 80 years old, antihypertensive treatment significantly reduces cardiovascular events. In the elderly, blood pressure target depends on patients' frailty. After 80 years, French guidelines propose to aim a SBP<150 mmHg without orthostatic hypotension and without exceeding the prescription of more than three antihypertensive drugs. The target may be more ambitious for robust elderly patients. The new 2018 European guidelines set: a stricter target for robust elderly patient aged 80 years or older (SBP between 130 and 139 mmHg and DBP between 70 and 79 mmHg); this objective is less strict for frail ...
Source: Presse Medicale - January 18, 2019 Category: General Medicine Authors: Hernandorena I, Bailly H, Piccoli M, Beunardeau M, Cohen A, Hanon O Tags: Presse Med Source Type: research

An assay to measure levels of factor Xa inhibitors in blood and plasma.
CONCLUSION: The assay is ideal for rapidly and accurately measuring DOAC levels in plasma and blood, demonstrating its potential for point-of-care applications. This article is protected by copyright. All rights reserved. PMID: 30985986 [PubMed - as supplied by publisher]
Source: Thrombosis and Haemostasis - April 14, 2019 Category: Hematology Authors: Kim PY, Di Giuseppantonio LR, Wu C, Douketis JD, Gross PL Tags: J Thromb Haemost Source Type: research

Multifractal Desynchronization of the Cardiac Excitable Cell Network During Atrial Fibrillation. II. Modeling
In this study, we elaborate on a tentative interpretation of the observed intermittent dynamics during AF as the signature of synaptic plasticity. Typical individual GJC transition times between open and closed states were shown to be much longer than those of membrane polarization but compare well with membrane recovery time (≳ 100ms) (Spray et al., 1984; Neyton and Trautmann, 1986; Wang et al., 1992; Bukauskas and Verselis, 2004; Desplantez et al., 2007). Moreover, slow gating modulations have been evidenced due to cytoplasmic protons (low pH) and free calcium (Spray et al., 1984; Burt and Sray, 1988; Kumar and G...
Source: Frontiers in Physiology - April 23, 2019 Category: Physiology Source Type: research

Atrial Transcriptional Profiles of Molecular Targets Mediating Electrophysiological Function in Aging and Pgc-1 β Deficient Murine Hearts
Conclusion: These findings limit the possible roles of gene transcriptional changes in previously reported age-dependent pro-arrhythmic electrophysiologial changes observed in Pgc-1β-/- atria to an altered Ca2+-ATPase (Atp2a2) expression. This directly parallels previously reported arrhythmic mechanism associated with p21-activated kinase type 1 deficiency. This could add to contributions from the direct physiological outcomes of mitochondrial dysfunction, whether through reactive oxygen species (ROS) production or altered Ca2+ homeostasis. Introduction Atrial arrhythmias constitute a major public health pro...
Source: Frontiers in Physiology - April 23, 2019 Category: Physiology Source Type: research

Effects of ANP on Pulmonary Vein Electrophysiology, Ca2+ Homeostasis and Adrenergic Arrhythmogenesis via PKA.
In conclusion, ANP directly regulates PV electrophysiological characteristics and Ca2+ homeostasis, and attenuates isoproterenol-induced arrhythmogenesis through NPR-C/cAMP/PKA signal pathway. PMID: 31637746 [PubMed - as supplied by publisher]
Source: Clinical and Experimental Pharmacology and Physiology - October 21, 2019 Category: Drugs & Pharmacology Authors: Lu YY, Cheng CC, Wu HJ, Lin YK, Chen YC, Chen SA, Chen YJ Tags: Clin Exp Pharmacol Physiol Source Type: research

< i > In silico < /i > investigation of the mechanisms underlying atrial fibrillation due to impaired Pitx2
by Jieyun Bai, Andy Lo, Patrick A. Gladding, Martin K. Stiles, Vadim V. Fedorov, Jichao Zhao Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia and is a major cause of stroke and morbidity. Recent genome-wide association studies have shown that paired-like homeodomain transcription factor 2 (Pitx2) to be strongly associated with AF. However, the mechanisms underlying Pitx2 modulated arrhythmogenesis and variable effectiveness of antiarrhythmic drugs (AADs) in patients in the presence or absence of impaired Pitx2 expression remain unclear. We have developed multi-scale computer models, ranging from a ...
Source: PLoS Computational Biology - February 24, 2020 Category: Biology Authors: Jieyun Bai Source Type: research

Analysis of bioMARKer Distribution and Individual Reproducibility Under Rivaroxaban Treatment in Japanese Patients with Non-Valvular Atrial Fibrillation (R-MARK Study, CVI ARO2).
We reported the on-therapy range of rivaroxaban in a multicenter cohort. This range was consistent with that of a single-center cohort and was highly reproducible within three months in daily clinical practice. However, caution is necessary regarding several factors that may affect the intraindividual variation of PC-Riv. PMID: 32684604 [PubMed - as supplied by publisher]
Source: International Heart Journal - July 22, 2020 Category: Cardiology Tags: Int Heart J Source Type: research