Articles tagged with Cardiac Function
Researchers at Gladstone Institute of Cardiovascular Disease identified a critical genetic factor, microRNA miR-1-2, that regulates heart form and function. The study found that deletion of this microRNA causes defects in heart growth, function, and electrical conduction, potentially leading to new treatments for cardiovascular diseases.
A new study suggests that pre-dive intake of antioxidants Vitamin C and E can reduce alterations in cardiovascular function. This intervention showed a positive effect on vascular endothelial function, while other cardiac changes were unaffected.
Researchers developed a simple, noninvasive test to measure right ventricular function and predict survival of adults with pulmonary hypertension. The test, TAPSE, assesses echocardiographic abnormalities in the tricuspid valve and showed that patients with advanced right ventricular dysfunction had dramatically reduced survival rates.
Researchers at Thomas Jefferson University found that GRK2 protein levels are elevated in patients with failing hearts compared to those with normal heart function. The study suggests that GRK2 could be a biomarker for heart failure and potentially predict patient response to treatment.
A study of children and young adults treated with doxorubicin for bone tumors found progressive worsening of heart damage, with nearly half showing diastolic dysfunction. Regular echocardiography is recommended to monitor heart function and prevent further deterioration.
Researchers detected subtle changes in left ventricle walls using MRI tagging, showing an association between atherosclerosis and reduced heart pumping function. The study found early signs of atherosclerosis in carotid arteries related to fine changes in heart contraction.
Having any degree of impaired heart function may be an independent risk factor for ischemic stroke. Mild LVD is present in 3-6% of the general population and increases stroke risk more than three-fold in men and almost five-fold in women.
A recent study found that stem cell mobilization therapy does not improve left ventricular recovery in patients with acute myocardial infarction. Despite significant mobilization of bone marrow stem cells, treatment did not alter infarct size or risk of restenosis or major adverse cardiac events.
Researchers found that a soy-based diet caused significant growth in the hearts of male mice, whereas female mice showed no such effect. The study suggests that phytoestrogens may play a role in exacerbating heart disease, particularly in males.
The PREAMI study found that perindopril significantly reduces the risk of death, hospitalization for heart failure, and cardiac remodelling in elderly patients after acute myocardial infarction. Perindopril reduced these outcomes by 59% and cardiac remodelling by 64%, with consistent benefits across predefined subgroups.
A recent MRI study has mapped 'silent' heart changes that remodel the heart, linking specific regional changes to early signs of trouble in the left ventricle. The study found that pumping function deteriorates as hearts increasingly change shape or remodel.
Researchers at Duke University Medical Center have made a breakthrough in understanding the role of phosphoinositide 3-kinase (PI(3)K) in heart failure. They found that preventing PI(3)K's activation could block the loss of heart receptors, potentially improving heart function in patients with heart failure.
A new study using CRT-D devices found a strong correlation between changes in heart rate variability and mortality one year later. Patients with limited heart rate variability are at higher risk of suffering a heart attack, making the device's data an important tool for identifying high-risk patients.
A minimally invasive procedure involving stem cells has shown improvement in heart function for patients with severe heart failure and no coronary blockages. All 15 patients who received stem cell injections experienced some degree of improvement, while the control group saw little change.
Researchers found that seven percent of patients implanted with VADs were successfully weaned off the devices without needing a heart transplant. The study showed that VAD support can facilitate dramatic recovery in patients with acute inflammatory cardiomyopathy or post-partum cardiomyopathy.
Researchers at Duke University Medical Center have discovered two genetic regions linked to heart function and survival in patients with heart failure. The study found that genetic variations on chromosomes 13, 18, 2, and 4 affect cardiac function and survival, providing potential targets for new therapies.
Researchers studied 99 adults with mild hypertension, finding reduced heart function during exercise and at rest if they delivered less oxygen per beat. This study suggests oxygen pulse during exercise could be a useful screening tool for identifying heart issues in these individuals.
A study found that disrupting PI3Kgamma preserves beta-adrenergic receptors on heart cells, leading to improved heart function and longer survival in mice. The loss of beta-adrenergic receptors contributes to heart failure, but this intervention may provide a new therapeutic approach.
A team of researchers, led by Josef Penninger, found that the PTEN and PI3K alpha and gamma proteins work together to regulate heart size. They also discovered that when these proteins are shut down, large hearts can pump more efficiently than normal-sized hearts.
Researchers found that genes, rather than blood pressure or age, significantly impact heart function and the risk of developing diastolic heart failure. The study suggests that an individual's genetic makeup may be programmed from birth, determining their future heart health.
Researchers at the University of Toronto found that balancing ACE 1 and 2 genes leads to healthy hearts in mice models. The study sheds light on the complex relationship between ACE 1 by-products and cardiovascular disease.
Researchers at Jefferson Medical College and University of Barcelona found that moderate drinking from one to four drinks a day improved heart function in men with alcohol-related heart failure. The study suggests a threshold drinking level for alcohol-related heart damage, below which there is no harm.
Researchers from Massachusetts General Hospital report that delivering extra copies of the SERCA2a gene to the heart muscle via gene therapy techniques alleviates diastolic dysfunction in aging rats. This study provides a potential target for therapies to prevent progression to heart failure.
Adding beta-blocker metoprolol to standard treatment for heart failure increases survival by about 35 percent, according to a large international study. The study, called Metoprolol CR/XL Randomized Intervention Trial in Heart Failure (Merit-HF), was conducted in the US and 13 other countries.
A new study found that ACE inhibitors increase patient survival by about 30 percent overall, especially in patients with impaired heart function. The analysis supports the use of ACE inhibitors in almost all patients with impaired heart function when discharged from hospital following a heart attack.