Heart

Heart attack patients often need replacements for damaged arteries. In a new proof-of-concept study, scientists knitted a prototype graft out of hybrid synthetic and biological yarn, helping the patients own cells grow and repair the artery.

New research has shown depression can be detected by monitoring a person's heart rate over a 24-hour period. The small study needs more verification but it points to a biomarker that could be easily integrated into patient monitoring systems.

New research is suggesting a simple saliva test can detect the presence of a protein biomarker known to signal the occurrence of a heart attack in just 10 minutes, potentially accelerating the speed at which patients can be diagnosed and treated.

Scientists have created the first-ever functional miniature human hearts in the lab. Grown from stem cells, these heart “organoids” are made up of all primary heart cell types, and could help build better models for treating disease.

Heart attacks are a leading cause of death, largely because damage caused by one can lead to more. Now researchers at Rice University have developed a new way to repair heart tissue and reduce scarring, by implanting capsules loaded with stem cells.

A pair of new studies highlight the potential for long-term heart complications in recovered COVID-19 patients. The research suggests the virus can damage cardiovascular muscles with inflammation detectable months after recovery, even in mild cases.

New research from the University of Colorado Boulder has offered some of the clearest evidence to date showing how the gut microbiome produces a metabolite that, over time, contributes to age-related declines in cardiovascular health.

When it comes to replacing faulty heart valves, there are two options – a metallic valve, or a biological one obtained from a pig or cow. There could soon be a third and perhaps better choice, though, in the form of a polymer replacement heart valve.

A new study, led by researchers at the Broad Institute of MIT and Harvard, is shedding light on a century-old mystery. The study describes how bacteria in the gut can metabolize cholesterol at levels high enough to improve a person’s cardiac health.

An abnormal heart rhythm called atrial fibrillation is one of the leading causes of strokes, yet it's often symptomless, so it frequently goes undetected. An experimental new necklace, however, could make checking for it a quick and simple process.

The human heart lacks the ability to replenish cells. But now, researchers at the University of Texas Southwestern have uncovered a suite of proteins in mice that could be switched off to induce heart cells to begin replicating again temporarily.

Heart cells don’t naturally replenish, so after a heart attack it stays permanently damaged. Cambridge researchers have now stumbled onto genes that appear to trigger heart cell regeneration – and they did so by accident, while researching cancer.