DALLAS, Jan. 14, 2021 -- The longer the time between when heart attack symptoms start and a patient has an artery-clearing percutaneous coronary intervention (PCI), the more damage to the heart muscle, according to new research published today in Circulation: Cardiovascular Interventions, an American Heart Association journal. A heart attack happens about every 40 seconds in the U.S., and the most common heart attack is caused by a complete blockage in a coronary artery, called ST-elevation myocardial infarction (STEMI). STEMI patients are most often treated with PCI, also known as angioplasty with stent, in which a catheter with a deflated balloon is inserted into the narrowed heart artery. Subsequently, the balloon is inflated, which clears the obstruction and restores ...

DALLAS, Jan. 14, 2021 -- Adults who smoke or who are genetically predisposed to smoking behaviors are more likely to experience a serious type of stroke called subarachnoid hemorrhage (SAH), according to new research published today in Stroke, a journal of the American Stroke Association, a division of the American Heart Association. The results of this study provide important evidence that there is a causal link between smoking and the risk of SAH. SAH is a type of stroke that occurs when a blood vessel on the surface of the brain ruptures and bleeds into the space between the brain and the skull. It mainly affects middle-aged adults and has high rates of complications ...

MEDFORD/SOMERVILLE (January 14, 2021) - A team of researchers led by engineers at Tufts University's School of Engineering and Stanford University's Program on Water, Health and Development have developed a novel and inexpensive chlorine dispensing device that can improve the safety of drinking water in regions of the world that lack financial resources and adequate infrastructure. With no moving parts, no need for electricity, and little need for maintenance, the device releases measured quantities of chlorine into the water just before it exits the tap. It provides a quick and ...

There is a growing consensus among scientists as well as national and local governments representing hundreds of millions of people, that humanity faces a climate crisis that demands a crisis response. New research from the University of California San Diego explores one possible mode of response: a massively funded program to deploy direct air capture (DAC) systems that remove CO2 directly from the ambient air and sequester it safely underground. The findings reveal such a program could reverse the rise in global temperature well before 2100, but only with immediate and sustained investments from governments and firms to scale up the new technology. Despite the enormous undertaking explored in the study, the research ...

Honeybee historians might seem like a flight of fancy but these tiny pollinators have been helping researchers from the National Botanic Garden of Wales track how the UK's fields, hedgerows, wild spaces and gardens have changed since the 1950s.Using cutting-edge DNA barcoding techniques, scientists at the Botanic Garden identified which plants modern-day honeybees visited most often by looking at the pollen grains trapped within honey. They compared this to a 1952 survey of honey plants where a microscope had been used to painstakingly identify pollen grains in honey sent from hives across the country. The differences were clear. White clover had been the most important plant for honeybees but, with fewer pastures today and increased use of herbicides and inorganic ...

New research has unlocked the mystery of how the Galápagos Islands, a rocky, volcanic outcrop, with only modest rainfall and vegetation, is able to sustain its unique wildlife habitats. The Galápagos archipelago, rising from the eastern equatorial Pacific Ocean some 900 kilometres off the South American mainland, is an iconic and globally significant biological hotspot. The islands are renowned for their unique wealth of endemic species, which inspired Charles Darwin's theory of evolution and today underpins one of the largest UNESCO World Heritage Sites and Marine Reserves on Earth. Scientists have known ...

Water isn't just crucial for life, it's fundamental to increasing opportunities for women and girls in rural areas across the globe. A new Stanford study reveals how bringing piped water closer to remote households in Zambia dramatically improves the lives of women and girls, while also improving economic opportunities, food security and well-being for entire households. The research, recently published in Social Science & Medicine, could spur governments and NGOs to more carefully evaluate the costs and benefits of piped water as an alternative to less accessible communal water sources. "Switching from the village borehole to piped supply saved almost 200 hours of fetching time per year for a typical household," said study senior ...

A new paper in Q Open finds that the availability of fast food restaurants on the route between children's houses and their schools does not affect children's weight. Reducing the rate of childhood obesity is a top public health priority in the United States where obesity rates are 18.4% for those ages 6-11 and 20.6% for those ages 12-19. Childhood obesity is a documented risk-factor for negative physical and mental health outcomes. Obese children are also more likely to become obese adults and suffer associated health problems. Researchers have proposed that the accessibility ...

Researchers in South Korea have developed a phototherapy technology that can significantly increase efficiency while reducing the pain of chemotherapy and minimizing side effects after treatment. The President of Korea Institute of Science and Technology (KIST), Seok-Jin Yoon announced that a research team led by Dr. Se-hoon Kim at the Theragnosis Research Center (KU-KIST Graduate School of Converging Science and Technology) has developed a cancer-targeted phototherapeutic agent that promises complete elimination of cancer cells without side effects. It involves only one injection and repeated phototherapy. This development ...

While there is an abundant amount of research about traumatic brain injuries in athletes and those serving in the military, the same data is scarce when it comes to concussions and head and neck injuries sustained due to intimate partner violence. Carrie Esopenko, assistant professor in the Department of Rehabilitation and Movement Sciences in the Rutgers School of Health Professions says that the World Health Organization estimates that one in three women will experience intimate partner violence (IPV) in her lifetime, and studies suggest that anywhere between 30% to 90% of women who experience physical abuse at the hands of an intimate partner experience head trauma. Yet not enough data is being collected to understand how this head trauma affects cognitive and psychological ...

Cities have become the focus of global climate mitigation efforts because as they are responsible for 60-70% of energy-related CO2 emissions. As the world is increasingly urbanized, it is crucial to identify cost-effective pathways to decarbonize and enhance the resilience of cities, which ensure the well-being of their dwellers. In this study, we propose a "SolarEV City" concept, in which integrated systems of cities' roof-top photovoltaics and electric vehicles (EVs) supply affordable and dispatchable CO2-free electricity to urban dwellers. The SolarEV City assumes that 70% of toof-top of cities at maximum are used for PV and all passenger vehciles are converted to ...

August 2020 set new record high sea surface temperatures (SSTs) in the northwestern Pacific Ocean and around the Japan coasts. A new study led by National Institute for Environmental Studies (NIES) researchers revealed that this warming record could not happen without human-induced climate changes. The northwestern Pacific sea surface becomes warm seasonally around August every year. However, it was unprecedentedly high in August 2020, according to the Japan Meteorological Agency and the National Oceanic and Atmospheric Administration. The extremely high SSTs exceeding 30°C, which lasted until mid-September, may have intensified tropical cyclones such as ...

At cruising altitude, airplanes emit a steady stream of nitrogen oxides into the atmosphere, where the chemicals can linger to produce ozone and fine particulates. Nitrogen oxides, or NOx, are a major source of air pollution and have been associated with asthma, respiratory disease, and cardiovascular disorders. Previous research has shown that the generation of these chemicals due to global aviation results in 16,000 premature deaths each year. Now MIT engineers have come up with a concept for airplane propulsion that they estimate would eliminate 95 percent of aviation's NOx emissions, and thereby reduce the number of associated early deaths by 92 percent. The concept is inspired ...

Tsukuba, Japan -- We laugh when we see Homer Simpson falling asleep while driving, while in church, and while even operating the nuclear reactor. In reality though, narcolepsy, cataplexy, and rapid eye movement (REM) sleep behavior disorder are all serious sleep-related illnesses. Researchers at the University of Tsukuba led by Professor Takeshi Sakurai have found neurons in the brain that link all three disorders and could provide a target for treatments. REM sleep correlates when we dream. Our eyes move back and forth, but our bodies remain still. This near-paralysis of muscles while dreaming is called REM-atonia, and is lacking in people with REM sleep behavior disorder. Instead ...

Non-invasive imaging technique called 31-phosphorus magnetic resonance spectroscopy used to measure mitochondrial function in patients with motor neuron disease (MND) Evidence shows that mitochondria - often referred to as the cell's battery - are impaired in MND This technique could be used to measure the effectiveness of future treatments for MND Researchers from the Sheffield Institute for Translational Neuroscience (SITraN) have used a new imaging technique to measure the function of mitochondria in patients with motor neuron disease (MND). The research, published today (13 January 2021) ...

Patients with type 2 diabetes who follow a strict low carbohydrate diet for six months may experience greater rates of remission compared with other recommended diets without adverse effects, suggests a study published by The BMJ today. The researchers acknowledge that most benefits diminished at 12 months, but say doctors might consider short term strict low carbohydrate diets for managing type 2 diabetes, while actively monitoring and adjusting diabetes medication as needed. Type 2 diabetes is the most common form of diabetes worldwide and diet is recognised as an essential part of treatment. But uncertainty remains about which diet to choose and previous studies have reported mixed results. To address this evidence gap, a team of international researchers ...

The build-up of calcium in a major artery outside of the heart could predict future heart attack or stroke, a new Edith Cowan University led study has demonstrated. Published today in the Journal of the American Heart Association, the research could help doctors identify people at risk of cardiovascular disease years before symptoms arise. Analysing 52 previous studies, the international team of researchers found that people who have abdominal aortic calcification (AAC) have a two to four times higher risk of a future cardiovascular event. The study also found the more extensive the calcium in the blood vessel wall, the greater the risk of future cardiovascular events and people with AAC ...

Decades of research show that depression, stress, loneliness, and poor health behaviors can weaken the body's immune system and lower the effectiveness of certain vaccines. A new report accepted for publication in Perspectives on Psychological Science suggests that the same may be true for the new COVID-19 vaccines that are in development and the early stages of global distribution. Fortunately, it may be possible to reduce these negative effects with simple steps like exercise and sleep. Vaccines are among the safest and most effective advances in medical history, protecting society from a wide range of otherwise devastating diseases, including smallpox and polio. The key to their success, however, is ensuring that a critical percentage of the population is effectively ...

Pulsed ultraviolet light can be an effective alternative to some of the antimicrobial technologies now used by the poultry industry to kill pathogens on eggshells, according to Penn State researchers, who simulated production conditions to test the technology. Researcher Paul Patterson, professor of poultry science, College of Agricultural Sciences, suggests the technology has merit for commercial application in the egg industry. "This study is unique because it scaled-up and applied components of standard egg processing to a conveyor and sanitizing eggs in a commercial setting," he said. "In the absence of water or other chemical sanitizers, this technology ...

Honey bee health has been on the decline for two decades, with U.S. and Canadian beekeepers now losing about 25 to 40% of their colonies annually. And queen bees are failing faster than they have in the past in their ability to reproduce. The reason has been a mystery, but researchers at North Carolina State University and the University of British Columbia are finding answers. Their latest research, published Jan. 8 in the journal Communications Biology, offers clues about what's behind queen bee failure, finding that when sperm viability is low, the expression of a protein known to act against pathogens such as bacteria and viruses is high. David Tarpy, a University Faculty Scholar and professor in NC State's Department ...

BOSTON -- Completing cancer screening tests, such as mammograms, can be challenging for low-income people, who may face such challenges as lack of transportation or inability to take time off work. A team at Massachusetts General Hospital (MGH) explored the possibility of addressing preventive care needs when patients are admitted to the hospital. The pilot study, published in the Annals of Family Medicine, examined the feasibility of performing mammograms in women insured by Medicaid or both Medicaid and Medicare (dual-eligible patients) while they were hospitalized. "We designed the study to reach the patients who face significant barriers to completing their mammograms in the outpatient setting," says Andrew S. Hwang, MD, MPH, an internist at MGH and first author of ...

DES PLAINES, IL -- Among children who were not in an independently verified incident, evaluation for child abuse should be done by specialty consultation in children aged less than three-years old presenting with rib fractures and children aged less than 18-months presenting with humeral or femoral fractures. That is the conclusion of a study titled Identifying Maltreatment in Infants and Young Children Presenting with Fractures: Does Age Matter?, to be published in the January 2021 issue of Yersinia pestis (AEM), a journal of the Society for Academic Emergency Medicine (SAEM). The lead author of the study is Ian ...

Since the dawn of the 21st century, there has been a rapid rise in the number of human immunodeficiency virus (HIV) infections in China, and today, the epidemic continues to grow. Several populations are victims of this virus, including injection drug users, sex workers, and men who have sex with men (MSM). In the various decades since HIV has gripped China, these groups and others have variously been at the forefront or background of national efforts to tackle the epidemic. In the recent past, the prevalence of HIV has been high among the MSM population, particularly, MSM students. According to China CDC's national data on newly reported ...

(Boston) -- Minimally invasive surgeries in which surgeons gain access to internal tissues through natural orifices or small external excisions are common practice in medicine. They are performed for problems as diverse as delivering stents through catheters, treating abdominal complications, and performing transnasal operations at the skull base in patients with neurological conditions. The ends of devices for such surgeries are highly flexible (or "articulated") to enable the visualization and specific manipulation of the surgical site in the target tissue. In the case of energy-delivering devices that allow surgeons to cut or dry (desiccate) tissues, and stop internal bleeds (coagulate) deep inside the body, a heat-generating energy source is ...

Earth's ability to absorb nearly a third of human-caused carbon emissions through plants could be halved within the next two decades at the current rate of warming, according to a new study in Science Advances by researchers at Northern Arizona University, the Woodwell Climate Research Center and the University of Waikato, New Zealand. Using more than two decades of data from measurement towers in every major biome across the globe, the team identified a critical temperature tipping point beyond which plants' ability to capture and store atmospheric carbon--a cumulative effect referred to as the "land carbon sink"--decreases as temperatures continue to rise. The terrestrial biosphere--the activity of land plants and soil microbes--does much of Earth's "breathing," exchanging ...