Abstract:
BACKGROUND:There are several mechanisms, including inflammation, oxidative stress and abnormal calcium homeostasis, involved in the pathogenesis of atrial fibrillation. In diabetes mellitus (DM), increased oxidative stress may be attributable to higher xanthine oxidase activity. In this study, we examined the relationship between oxidative stress and atrial electrical and structural remodeling, and calcium handling abnormalities, and the potential beneficial effects of the xanthine oxidase inhibitor allopurinol upon these pathological changes. METHODS AND RESULTS:Ninety rabbits were randomly and equally divided into 3 groups: control, DM, and allopurinol-treated DM group. Echocardiographic and hemodynamic assessments were performed in vivo. Serum and tissue markers of oxidative stress and atrial fibrosis, including the protein expression were examined. Atrial interstitial fibrosis was evaluated by Masson trichrome staining. ICaL was measured from isolated left atrial cardiomyocytes using voltage-clamp techniques. Confocal microscopy was used to detect intracellular calcium transients. The Ca2+ handling protein expression was analyzed by Western blotting. Mitochondrial-related proteins were analyzed as markers of mitochondrial function. Compared with the control group, rabbits with DM showed left ventricular hypertrophy, increased atrial interstitial fibrosis, oxidative stress and fibrosis markers, ICaL and intracellular calcium transient, and atrial fibrillation inducibility. These abnormalities were alleviated by allopurinol treatment. CONCLUSIONS:Allopurinol, via its antioxidant effects, reduces atrial mechanical, structural, ion channel remodeling and mitochondrial synthesis abnormalities induced by DM-related increases in oxidative stress.
journal_name
J Am Heart Assocjournal_title
Journal of the American Heart Associationauthors
Yang Y,Zhao J,Qiu J,Li J,Liang X,Zhang Z,Zhang X,Fu H,Korantzopoulos P,Letsas KP,Tse G,Li G,Liu Tdoi
10.1161/JAHA.118.008807subject
Has Abstractpub_date
2018-05-02 00:00:00issue
10issn
2047-9980pii
JAHA.118.008807journal_volume
7pub_type
杂志文章abstract:BACKGROUND:Previous studies have suggested that n-3 polyunsaturated fatty acids (n-3 PUFAs) have antiarrhythmic effects on atrial fibrillation (AF). We aimed to assess the effects of therapy with n-3 PUFAs on the incidence of recurrent AF and on postoperative AF. METHODS AND RESULTS:Electronic searches were conducted ...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,meta分析,评审
doi:10.1161/JAHA.112.005033
更新日期:2013-02-19 00:00:00
abstract:BACKGROUND:Depression is known to increase the risk of coronary artery disease, but few studies have evaluated the association between depression and peripheral artery disease (PAD). We examined the association of depression with PAD and evaluated potential mediators of this association. METHODS AND RESULTS:We used da...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.112.002667
更新日期:2012-08-01 00:00:00
abstract:BACKGROUND:Hypertension is a frequent risk factor for the development of heart failure with preserved ejection fraction (HFPEF). Progressive extracellular matrix accumulation has been presumed to be the fundamental pathophysiologic mechanism that leads to the transition to impaired diastolic reserve. However, the contr...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.114.001293
更新日期:2014-12-02 00:00:00
abstract::Background Young women with coronary artery disease ( CAD ), a group with high psychosocial burden, were previously shown to have higher levels of interleukin-6 ( IL -6) compared with men of similar age. We sought to examine IL -6 response to acute stress in CAD patients across sex and age, and contrast results to hea...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.010329
更新日期:2018-12-04 00:00:00
abstract::Background We evaluated a community-engaged stroke preparedness intervention that aimed to increase early hospital arrival and emergency medical services (EMS) utilization among patients with stroke in the South Side of Chicago, Illinois. Methods and Results We compared change in early hospital arrival (<3 hours from ...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.120.016344
更新日期:2020-09-15 00:00:00
abstract::Background White matter hyperintensities ( WMHs ) are commonly asymmetric between hemispheres but for unknown reasons. We investigated asymmetric WMHs associated with lacunar infarcts. Methods and Results A total of 267 consecutive patients with small first-ever supratentorial infarcts (≤20 mm) were included. None had...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.010653
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abstract:BACKGROUND:Family history of coronary heart disease (CHD) as well as genetic predisposition to CHD assessed by a genetic risk score (GRS) are predictors of CHD risk. It is, however, uncertain to what extent these risk predictors are mediated by major metabolic pathways. METHODS AND RESULTS:Total effects of self-report...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.116.005254
更新日期:2017-03-20 00:00:00
abstract::Background Dietary micronutrient deficiencies have been shown to predict event-free survival in other countries but have not been examined in patients with heart failure living in the United States. The purpose of this study was to determine whether number of dietary micronutrient deficiencies in patients with heart f...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.117.007251
更新日期:2018-09-04 00:00:00
abstract:BACKGROUND:History of gestational diabetes mellitus (GDM) increases lifetime risk of type 2 diabetes (DM) and the metabolic syndrome (MetS), which increase risk of cardiovascular disease. It is unclear, however, whether GDM increases risk of early atherosclerosis independent of pre-pregnancy obesity and subsequent meta...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,多中心研究
doi:10.1161/JAHA.113.000490
更新日期:2014-03-12 00:00:00
abstract::Background While high levels of lipids and lipid variability are established risk factors for atherosclerotic cardiovascular disease, their roles in the development of atrial fibrillation (AF) are unclear, with previous studies suggesting a "cholesterol paradox." Methods and Results A nationwide population-based cohor...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.119.012771
更新日期:2019-12-03 00:00:00
abstract::Background The majority of studies evaluating cardiorespiratory fitness ( CRF ) as a cardiovascular risk factor use cardiovascular mortality and not cardiovascular disease events as the primary end point, and generally do not include women. The aim of this study was to investigate the association of estimated CRF ( eC...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.010293
更新日期:2019-05-07 00:00:00
abstract:BACKGROUND:Diabetes is associated with coronary arteriolar endothelial dysfunction. We investigated the role of the small/intermediate (SK(Ca)/IK(Ca)) conductance of calcium-activated potassium channels in diabetes-related endothelial dysfunction. METHODS AND RESULTS:Coronary arterioles (80 to 150 μm in diameter) were...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.115.002062
更新日期:2015-08-24 00:00:00
abstract::Background We aim to generate a line of "universal donor" human induced pluripotent stem cells (hi PSC s) that are nonimmunogenic and, therefore, can be used to derive cell products suitable for allogeneic transplantation. Methods and Results hi PSC s carrying knockout mutations for 2 key components (β2 microglobulin ...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.010239
更新日期:2018-12-04 00:00:00
abstract::Background Congenital heart disease is common in patients with Trisomy 13 (T13) and Trisomy 18 (T18), but offering cardiac surgery to these patients has been controversial. We describe the landscape of surgical management across the United States, perioperative risk factors, and surgical outcomes in patients with T13 ...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.119.012349
更新日期:2019-07-02 00:00:00
abstract::Background Quantitative flow ratio ( QFR ) has a high diagnostic accuracy in assessing functional stenoses relevance, as judged by fractional flow reserve ( FFR ). However, its diagnostic performance has not been thoroughly evaluated using instantaneous wave-free ratio ( iFR ) or coronary flow reserve as the reference...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.011605
更新日期:2019-04-16 00:00:00
abstract::Background Hyperhomocysteinemia is a risk factor for ischemic stroke; however, a targeted treatment strategy is lacking partly because of limited understanding of the causal role of homocysteine in cerebrovascular pathogenesis. Methods and Results In a genetic model of cystathionine beta synthase (CBS) deficiency, we ...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.119.013368
更新日期:2020-02-18 00:00:00
abstract::Background The blood-brain barrier (BBB) is critical for cerebrovascular health. Although aging impairs the integrity of the BBB, the mechanisms behind this phenomenon are not clear. As mitochondrial components activate inflammation as mitochondria become dysfunctional, we examined how aging impacts cerebrovascular mi...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.120.017820
更新日期:2020-12-01 00:00:00
abstract::Background Kidney function decreases during the lifetime, and this decline is a powerful predictor of both kidney and cardiovascular outcomes. Statins lower cardiovascular risk, which may relate to beneficial effects on kidney function. We studied whether atorvastatin influences kidney function decline and assessed th...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,随机对照试验
doi:10.1161/JAHA.118.010827
更新日期:2019-05-07 00:00:00
abstract:BACKGROUND:Chest pain is a common reason for referral to pediatric cardiologists. Although pediatric chest pain is rarely attributable to serious cardiac pathology, extensive and costly evaluation is often performed. We have implemented a standardized approach to pediatric chest pain in our pediatric cardiology clinics...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.111.000349
更新日期:2012-04-01 00:00:00
abstract::Background Norwood surgery provides a palliative surgical option for hypoplastic left heart syndrome and has been available in Sweden since 1993. The practice of prenatal ultrasound screening was gradually implemented in the same era, resulting in an increased prenatal detection rate. Our primary aims were to study ch...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,多中心研究
doi:10.1161/JAHA.118.010893
更新日期:2019-01-22 00:00:00
abstract::Background Neutrophil gelatinase-associated lipocalin ( NGAL ) or lipocalin 2 may promote atherosclerosis and plaque instability leading to increased risk of cardiac events. We investigated the relationships between plasma NGAL , cardiovascular disease biomarkers, and long-term cardiac events. Methods and Results The ...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,随机对照试验
doi:10.1161/JAHA.118.011028
更新日期:2019-01-08 00:00:00
abstract:BACKGROUND:There are few data relating novel measures of left ventricular (LV) mechanical function to cardiovascular disease (CVD) outcomes in the community. Whether distinct components of LV mechanical function provide information regarding risk for different CVD outcomes is unclear. METHODS AND RESULTS:We used speck...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.115.002071
更新日期:2015-10-27 00:00:00
abstract::Background Aerobic exercise capacity is inversely associated with cardiovascular and all-cause mortality in men and women without coronary artery disease (CAD); however, a higher amount of vigorous exercise is associated with a J-shaped relationship in CAD patients. Therefore, the optimal type and amount of exercise f...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.119.014919
更新日期:2020-04-07 00:00:00
abstract::Background Cardiology has advanced guideline development and quality measurement. Recognizing the substantial benefits of guideline-directed medical therapy, this study aims to measure and explain apparent deviations in heart failure ( HF ) guideline adherence by clinicians at hospital discharge and describe any impac...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.008789
更新日期:2018-08-07 00:00:00
abstract:BACKGROUND:Medication adherence improves outcomes for patients with heart failure, but adherence rates remain low. We examined the association between earlier postdischarge follow-up and medication adherence. METHODS AND RESULTS:We performed a retrospective cohort study of patients ≥65 years who were hospitalized for ...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.117.007998
更新日期:2018-04-01 00:00:00
abstract::Background Soluble urokinase plasminogen activator receptor (su PAR ) is a proinflammatory biomarker associated with immune activation and fibrinolysis inhibition. Plasminogen activator inhibitor ( PAI -1) is associated with excessive fibrin accumulation, thrombus formation, and atherosclerosis. The relationship betwe...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.009881
更新日期:2018-08-07 00:00:00
abstract:BACKGROUND:Metabolic syndrome increases risk for atherosclerotic coronary artery disease, and its prevalence increases with increasing age and body mass index. Adults with congenital heart disease (ACHD) are now living longer and accruing coronary artery disease risk factors. However, the prevalence of metabolic syndro...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.114.001132
更新日期:2016-02-12 00:00:00
abstract::Background This study examined the association between ideal cardiovascular health ( CVH ) and the retinal microvasculature in midadulthood. Methods and Results The Cardiovascular Risk in Young Finns Study included children from 5 Finnish University cities, who were chosen randomly from the national population registe...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,多中心研究
doi:10.1161/JAHA.118.009487
更新日期:2018-10-16 00:00:00
abstract:BACKGROUND:Different sleep-disordered breathing (SDB) phenotypes, including coexisting obstructive and central sleep apnea (OSA-CSA), have not yet been characterized in a large sample of patients with heart failure and reduced ejection fraction (HFrEF) receiving guideline-based therapies. Therefore, the aim of the pres...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1161/JAHA.116.005899
更新日期:2017-11-29 00:00:00
abstract::Background Left ventricular assist devices (LVADs) generate electromagnetic interference that causes high-frequency noise artifacts on 12-lead ECGs. We describe the causes of this interference and potential solutions to aid ECG interpretation in patients with LVAD. Methods and Results Waveform data from ECGs performed...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.120.017563
更新日期:2020-08-18 00:00:00