A tiny region in a little-known muscle protein may hold the key to a healthy, steady heartbeat, as well as possible clues to future treatment of devastating heart ailments.

According to new research published today in a Go Red for Women spotlight issue of the Journal of the American Heart Association, an open access, peer-reviewed journal of the American Heart Association, death rates rose by a 1.2% absolute increase among adults younger than age 55, who were hospitalized between 2011 and 2022 with a first severe heart attack.

While heart disease in younger populations is rising globally, there have been virtually no studies examining parenting while navigating an early-onset cardiovascular condition. To address this gap, new focus group research has pinpointed the main concerns of parents with an early-onset cardiovascular condition facing the complex task of managing their own recovery while raising younger children. The study in the Canadian Journal of Cardiology, published by Elsevier, highlights the need for developmentally appropriate communication and family-sensitive support within secondary prevention programming.

Individuals living with type 2 diabetes (T2D) had a significantly lower risk of poor cardiovascular health when they used a GLP-1 receptor agonist (GLP-1 RA) in combination with adhering to healthy lifestyle habits, according to a new study led by researchers at Harvard T.H. Chan School of Public Health and the Department of Veterans Affairs Boston Healthcare System. The study is the first large cohort investigation to examine the combined effects of healthy habits and GLP-1 RAs on heart health, showing that the two strategies are complementary, rather than substitutes, in improving cardiovascular outcomes among patients with diabetes.

A new study published in the journal Cardiovascular Research shows that a single night of road traffic noise, at levels that are typical of those living in a city, causes stress to the heart and blood vessels.   The findings could help explain why people exposed to long-term traffic noise have higher rates of high blood pressure and heart disease.

New experiments have deciphered how disruptions to the body’s lymphatic system may drive lung and heart fibrosis in recipients of organ transplants – and have identified several potential therapeutic approaches to halt lung fibrosis in mice. By uncovering new treatment targets in transplant fibrosis, the findings could inform strategies to prevent one of the deadliest contributors to organ transplant rejection. Organ transplants tend to disrupt the delicate supportive network of lymphatic tissues that surrounds most organs, especially because these tissues aren’t reconnected during transplantation. This can lead to dysfunction in the lymphatic system and the accumulation of lymph fluids, or lymphedema. Researchers are beginning to suspect that lymphedema and similar complications could be major factors behind chronic rejection, which occurs in as many as half of transplant recipients after ten years. However, more research is needed to fill in the missing pieces of this puzzle. Hailey Shepherd and colleagues examined chronically rejected human heart and lung grafts and found strong evidence of fibrosis distributed across lymphatic vessels. These fibrotic areas contained unusually high levels of hyaluronan, a molecule that is normally drained by the lymphatic system. Further studies of mouse heart and lung grafts revealed that hyaluronan accumulated due to the secretion of the signaling molecule interleukin-1β by neutrophils. However, treating mice with an inhibitor that prevents the synthesis of hyaluronan or with a molecule that accelerates the growth of new lymphatic vessels prevented the rejection of lung grafts. “At a minimum, current surgical techniques of transplantation should be carefully reconsidered, particularly the stripping of lymphatic and adipose tissue surrounding anastomotic cuffs that is commonly performed during solid organ transplantation,” Shepherd et al. argue in their discussion.

About The Study: Given increasing rates of coronary artery disease (CAD) worldwide, the findings of this study of marked variation in radiation dose to patients from diagnostic testing identify a critical need for training, standardized protocols, and updated equipment to reduce radiation worldwide. This especially affects patients in low- and middle-income countries and patients undergoing coronary computed tomography angiograph. There are therefore important opportunities to improve the quality of CAD diagnosis for patients across the globe.

Over the next 25 years, the number of women living with cardiovascular disease is expected to rise sharply, as nearly 60% of women in the U.S. could have high blood pressure by 2050, up from about 5 in 10 previously reported for 2020, according to projections outlined in a new scientific statement from the American Heart Association.