ventricular

HIV Patients May Be at Risk of Heart Problems When Taking Protease Inhibitor Drugs

...that make a person vulnerable to sudden death by a ventricular arrhythmia. There are several specific actions physicians can take to use this new information wisely, Drs. Ackerman and Badley say. The first is to screen by electrocardiogram for heart effects in vulnerable patients. The second is to be alert for ...

Vascular structure and function improve with diet and exercise

...lood vessels at rest were performed as well. Left ventricular diastolic filling (LVDF) measurements indicate the efficiency of the heart to relax. Left ventricular mass is a measure of end organ damage often following the onset of LVDF abnormalities. The brachial...

Python a 'hearty' eater

...als, including humans, a 10-30 percent increase in ventricular mass can occur following several weeks to months o...ic training," said Hicks. In the snake, the rapid ventricular growth coincided with an increased production of the muscle protein, myosin. Myosin is involved in m...

Bone marrow stem cells may heal hearts even years after heart attacks

Left ventricular function and exercise capacity increased, while th... at least threefold: an improvement in global left ventricular function by 15 percent, infarction wall movement velocity rose 57 percent, and there was a significa...

Implantable pumps extend lives of patients too sick for transplant

...al Center cardiologists. The pumps, known as left ventricular assistant devices (LVADs), are employed when the heart's left ventricle ?the chamber of the heart that pumps blood throughout the body ?is too weak to pump enough blood to nourish the body's tissues. LVADs have been used as successful short-term "bri...

Stem cell mobilization therapy appears to be ineffective in repairing damage caused by heart attack

...id not alter infarct size (area of damage) or left ventricular function after a heart attack. "Moreover, in contr...riod based on sensitive assessment methods of left ventricular function and infarct size. In conclusion, use of G-CSF therapy to mobilize bone marrow–derived stem ...

Whole-genome study at Johns Hopkins reveals a new gene associated with abnormal heart rhythm

...iod of time it takes the heart to recover from the ventricular beat - when the two bottom chambers of the heart p...ub" part of the "lub-dub" heartbeat corresponds to ventricular contraction. So NOS1AP is active in the right place and time to play a role in QT interval. Furthe...

Potential heart benefit found in stem cells

...herapy is the bone marrow. To improve global left ventricular ejection fraction (EF, the volume of blood pumped ...in chamber during a single beat) and regional left ventricular wall motion, which is related to ejection fraction, researchers evaluated a treatment with bone marr...

Engineered heart tissue offers insights into irregular heartbeats, defibrillator failure

...rchers sought to understand the characteristics of ventricular tachycardia -- a condition characterized by abnorm...ught to understand how such arrhythmia may lead to ventricular fibrillation, in which the heart's electrical activity becomes disordered, causing the ventricles to...

Use of amino acid supplement following a heart attack provides no benefit, may be harmful

...e measures of vascular stiffness nor improves left ventricular function. L-arginine therapy in older patients with diffuse atherosclerosis may worsen clinical outcomes," the authors write. ...

Little known DNA repair enzyme may be a tumor suppressor gene

...e measures of vascular stiffness nor improves left ventricular function. L-arginine therapy in older patients with diffuse atherosclerosis may worsen clinical outcomes," the authors write. ...

An elephant tail

...e measures of vascular stiffness nor improves left ventricular function. L-arginine therapy in older patients with diffuse atherosclerosis may worsen clinical outcomes," the authors write. ...

Researchers link two more genes to sudden infant death syndrome

...thm disease known as catecholaminergic polymorphic ventricular tachycardia (CPVT). "For a parent whose infant died suddenly and mysteriously even five years ago, we were essentially unable to provide them with a cause and would often have to tell them, 'We have no idea why your apparently healthy infant did not...

New study shows antibiotic may protect the heart

...usion injury, and possibly long-term prevention of ventricular remodeling ?the changes in size, shape and function that may occur to the left ventricle of the heart," said Rakesh C. Kukreja, Ph.D., professor of medicine and Eric Lipman Chair of Cardiology at VCU. Kukreja is lead author of the study. Rapamycin b...

Neural stem cells lend the brain a surprising capacity for self-repair

...le in maintaining the cellular wall that lines the ventricular region of the brain in which the SVZ resides. With...s in the brain. Surprisingly, they reported, the ventricular damage was eventually repaired. SVZ reconstitution and remodeling of the ventricular wall was driven...

Protein overexpression at heart of heart failure

...rotein expression increased the activity of single ventricular L-VDCC, rendering these channels phenotypically identical to human and mouse heart failure. The authors conclude that electrical remodeling of the L-VDCC, based on gene expression changes, is an early step in a cascade ultimately induced in heart ...

Heart failure: Intervention possibilities from imaging programmed cell loss

... is one of the biological events that worsens left ventricular events," said Hofstra. "Our results indicate that heart muscle cell death is an active and ongoing process in heart failure, and that annexin imaging could possibly guide treatment for heart patients and be used to determine whether a treatment wa...