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 mitochondrial function, mitophagy, and inflammatory signaling; and whether any alterations correlate with BBB function. Methods and Results We isolated cerebral vessels from young (2-3 months of age) and aged (18-19 months of age) mice and found that aging led to increases in the cyclin-dependent kinase inhibitor 1 senescence marker with impaired mitochondrial function, which correlated with aged mice exhibiting increased BBB leak compared with young mice. Cerebral vessels also exhibited increased expression of mitophagy proteins Parkin and Nix with aging. Using mitophagy reporter (mtKeima) mice, we found that the capacity to increase mitophagy from baseline within the cerebral vessels on rotenone treatment was reduced with aging. Aging within the cerebral vessels also led to the upregulation of the stimulator of interferon genes and increased interleukin 6 (IL-6), a cytokine that alters mitochondrial function. Importantly, exogenous IL-6 treatment of young cerebral vessels upregulated mitophagy and Parkin and impaired mitochondrial function; whereas inhibiting IL-6 in aged cerebral vessels reduced Parkin expression and increased mitochondrial function. Furthermore, treating cerebral vessels of young mice with mitochondrial N-formyl peptides upregulated IL-6, increased Parkin, and reduced Claudin-5, a tight junction protein integral to BBB integrity. Conclusions Aging alters the cerebral vasculature to impair mitochondrial function and mitophagy and increase IL-6 levels. These alterations may impair BBB integrity and potentially reduce cerebrovascular health with aging.
journal_name
J Am Heart Assocjournal_title
Journal of the American Heart Associationauthors
Tyrrell DJ,Blin MG,Song J,Wood SC,Goldstein DRdoi
10.1161/JAHA.120.017820subject
Has Abstractpub_date
2020-12-01 00:00:00pages
e017820issue
23issn
2047-9980journal_volume
9pub_type
杂志文章abstract::Background Sepsis is the overwhelming host response to infection leading to shock and multiple organ dysfunction. Cardiovascular complications greatly increase sepsis-associated mortality. Although murine models are routinely used for preclinical studies, the benefit of using genetically engineered mice in sepsis is c...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.119.012260
更新日期:2019-05-21 00:00:00
abstract::Background Atrial fibrillation (AF) is associated with cognitive decline. Whether left atrial enlargement (LAE), a critical substrate for AF, is also associated is less well established. Therefore, we assessed the association of LAE and AF with cognitive decline in the ARIC-NCS (Atherosclerosis Risk in Communities Neu...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.119.013197
更新日期:2019-12-03 00:00:00
abstract::Background Increased vagal modulation is a mechanism that may partially explain the protective effect of healthy lifestyles. However, it is unclear how healthy lifestyles relate to vagal regulation longitudinally. We prospectively examined associations between a comprehensive measure of 4 important lifestyle factors a...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.119.012420
更新日期:2019-10-01 00:00:00
abstract:BACKGROUND:Although a stroke event often leads to work disability, diagnoses behind work disability before and after stroke are largely unknown. We examined the pre-event and postevent trends in diagnosis-specific work disability among patients of working age. METHODS AND RESULTS:We included all new nonfatal stroke ev...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.117.006991
更新日期:2018-01-04 00:00:00
abstract::Background A previous study reported histologic abnormalities in the pulmonary artery ( PA ) of patients with tetralogy of Fallot ( TOF ). However, the potential effect of these anatomical findings on PA vascular function has not been studied. We hypothesized that TOF patients had abnormal PA vascular function, and th...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.011731
更新日期:2019-06-18 00:00:00
abstract:BACKGROUND:Few studies have examined the impact of lifecourse socioeconomic position (SEP) on cardiovascular disease (CVD) risk among African Americans. METHODS AND RESULTS:We used data from the Jackson Heart Study (JHS) to examine the associations of multiple measures of lifecourse SEP with CVD events in a large coho...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.114.001553
更新日期:2015-05-27 00:00:00
abstract::Background The ISCHEMIA (International Study of Comparative Health Effectiveness with Medical and Invasive Approaches) trial failed to show a reduction in hard clinical end points with an early invasive strategy in stable ischemic heart disease (SIHD). However, the influence of left main disease and high-risk coronary...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.120.018104
更新日期:2021-01-05 00:00:00
abstract:BACKGROUND:Decreased arterial elasticity is a risk factor for several cardiovascular outcomes. Longitudinal data on the effect of physical activity in youth on adult arterial elasticity are limited. The aim of this study was to determine the long-term effects of physical activity in children and young adults on carotid...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.113.000594
更新日期:2014-04-22 00:00:00
abstract:BACKGROUND:Microvascular injury (MVI) after primary percutaneous coronary intervention for ST-elevation myocardial infarction (STEMI) is a major determinant of adverse clinical outcome. Experimental data indicate an impact of hypercholesterolemia on MVI; however, there is a lack of clinical studies confirming this rela...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.117.006957
更新日期:2017-10-10 00:00:00
abstract:BACKGROUND:Cardiac fibrosis occurs because of disruption of the extracellular matrix network leading to myocardial dysfunction. Angiotensin II has been implicated in the development of cardiac fibrosis. Recently, microRNAs have been identified as an attractive target for therapeutic intervention in cardiac pathologies;...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.117.006763
更新日期:2017-11-07 00:00:00
abstract:BACKGROUND:Clinical symptoms are part of the risk stratification approaches used in the emergency department (ED) to evaluate patients with suspected acute coronary syndromes (ACS). The objective of this study was to determine the sensitivity, specificity, and predictive value of 13 symptoms for a discharge diagnosis o...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,多中心研究
doi:10.1161/JAHA.113.000586
更新日期:2014-04-02 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
更新日期:2018-11-20 00:00:00
abstract::See Article Ramkumar et al. ...
journal_title:Journal of the American Heart Association
pub_type: 评论,社论
doi:10.1161/JAHA.119.013813
更新日期:2019-09-03 00:00:00
abstract::Background Regulator of G protein signaling 6 ( RGS 6) is an important member of the RGS family and produces pleiotropic regulatory effects on cardiac pathophysiology. However, the role of RGS 6 protein in cardiomyocytes during angiotensin II - and pressure overload-induced cardiac hypertrophy remain unknown. Methods ...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.009179
更新日期:2018-10-02 00:00:00
abstract:BACKGROUND:Transseptal puncture is a critical step in achieving left atrial (LA) access for a variety of cardiac procedures. Although the mechanical Brockenbrough needle has historically been used for this procedure, a needle employing radiofrequency (RF) energy has more recently been approved for clinical use. We soug...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,随机对照试验
doi:10.1161/JAHA.113.000428
更新日期:2013-09-17 00:00:00
abstract:BACKGROUND:A cohort study found that 9/11-related environmental exposures and posttraumatic stress disorder increased self-reported cardiovascular disease risk. We attempted to replicate these findings using objectively defined cardiovascular disease hospitalizations in the same cohort. METHODS AND RESULTS:Data for ad...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.113.000431
更新日期:2013-10-24 00:00:00
abstract::Background Patients presenting to hospitals during non-weekday hours experience worse outcomes, often attributed to reduced staffing. The American Heart Association International Stroke Conference ( ISC ) is well attended by stroke clinicians. We sought to determine whether patients with acute ischemic stroke ( AIS ) ...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.009842
更新日期:2018-11-06 00:00:00
abstract:BACKGROUND:Recent studies have shown that plasma levels of the biologically inactive prohormone for brain natriuretic peptide (proBNP) are increased in patients with heart failure. This can contribute to a reduction in the effectiveness of circulating BNP and exacerbate heart failure progression. The precise mechanisms...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.116.003601
更新日期:2017-02-10 00:00:00
abstract::Background Genetic testing in pediatric primary dilated cardiomyopathy (DCM) patients has identified numerous disease-causing variants, but few studies have evaluated genetic testing outcomes in this population in the context of patient and familial clinical data or assessed the clinical implications of temporal chang...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.120.016195
更新日期:2020-06-02 00:00:00
abstract:BACKGROUND:Workforce experts predict a future shortage of cardiologists that is expected to impact rural areas more severely than urban areas. However, there is little research on how rural patients are currently served through clinical outreach. This study examines the impact of cardiology outreach in Iowa, a state wi...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.115.002909
更新日期:2016-06-30 00:00:00
abstract::Background Data on race- and ethnicity-based disparities in the utilization and outcomes of structural heart disease interventions in the United States are scarce. Methods and Results We used the National Inpatient Sample (2011-2016) to examine racial and ethnic differences in the utilization, in-hospital outcomes, an...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.119.012125
更新日期:2019-08-06 00:00:00
abstract::The use of extracorporeal cardiopulmonary resuscitation (E-CPR) for the treatment of patients with out-of-hospital cardiac arrest who do not respond to conventional cardiopulmonary resuscitation CPR) has increased significantly in the past 10 years, in response to case reports and observational studies reporting encou...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.120.016521
更新日期:2020-05-18 00:00:00
abstract::Background Many patients use opioids for nonmalignant pain, and opioid use in the general population has been associated with poor long-term outcomes. The use of high-risk medications, including opioid analgesics, may increase the risk of unplanned healthcare utilization. Methods and Results We performed a nested eval...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.010664
更新日期:2019-02-05 00:00:00
abstract:BACKGROUND:Morphine is commonly used to treat chest pain during myocardial infarction, but its effect on cardiovascular outcome has never been directly evaluated. The aim of this study was to examine the effect and safety of morphine in patients with acute anterior ST-segment elevation myocardial infarction followed up...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.117.006833
更新日期:2018-02-10 00:00:00
abstract:BACKGROUND:Extracorporeal cardiopulmonary resuscitation (ECPR) is widely proposed for the treatment of refractory cardiac arrest. It should be associated with coronary angiography if coronary artery disease is suspected. However, the prioritization of care remains unclear in this situation. Our goal was to determine wh...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.116.004588
更新日期:2016-12-22 00:00:00
abstract:BACKGROUND:Microparticles (MPs) are circulating membrane particles of less than a micrometer in diameter shed from endothelial and blood cells. Recent literature suggests that MPs are not just functionally inert cell debris but may possess biological functions and mediate the communication between vascular cells. As a ...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.112.003764
更新日期:2012-12-31 00:00:00
abstract::Background In the 2000s, adults with HIV had a higher risk for atherosclerotic cardiovascular disease (ASCVD) compared with those without HIV. There is uncertainty if this excess risk still exists in the United States given changes in antiretroviral therapies and increased statin use. Methods and Results We compared t...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.119.013744
更新日期:2020-01-07 00:00:00
abstract:BACKGROUND:Tissue Doppler index E/e' is used clinically and in multidisciplinary research for estimation of left ventricular filling pressure (LVFP) and diastolic dysfunction (DD)/heart failure with preserved ejection fraction (HFpEF). Its diagnostic accuracy is not well studied. METHODS AND RESULTS:From the PubMed, S...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,meta分析,评审
doi:10.1161/JAHA.115.002530
更新日期:2016-01-25 00:00:00
abstract:BACKGROUND:We sought to characterize growth between birth and age 3 years in infants with hypoplastic left heart syndrome who underwent the Norwood procedure. METHODS AND RESULTS:We performed a secondary analysis using the Single Ventricle Reconstruction Trial database after excluding patients <37 weeks gestation (N=4...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,随机对照试验
doi:10.1161/JAHA.114.000079
更新日期:2014-06-23 00:00:00
abstract:BACKGROUND:Statin therapy reduces the risk of cardiovascular events in patients with obstructive coronary artery disease. The aim of the present study was to determine the effects of statins on the prognosis of patients with coronary vasospastic angina (VSA) free of significant atherosclerotic stenosis. METHODS AND RE...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.116.003426
更新日期:2016-05-20 00:00:00