Culture
WHAT:
The earliest eye damage from prion disease takes place in the cone photoreceptor cells, specifically in the cilia and the ribbon synapses, according to a new study of prion protein accumulation in the eye by National Institutes of Health scientists. Prion diseases originate when normally harmless prion protein molecules become abnormal and gather in clusters and filaments in the human body and brain.
Colorectal cancer is the third most common form of cancer. While 90% of cases are in people older than 50, there is an as-yet unexplained rising incidence in younger people.
Family history ranks high among risk factors for developing colorectal cancer, and people with such a history are often advised to get more frequent screening tests or start screening sooner than the recommended age of 45 years old. Those with a family history of cancer often seek out genetic tests to look for mutations linked to cancer risk. However, those tests don't always provide helpful information.
For species to survive in the wild, maintaining connectivity between populations is critical. Without 'wildlife corridors', groups of animals are isolated, unable to breed and may die out. In assessing wildlife connectivity, many aspects of the landscape are measured, but the impact of human behaviour has largely been overlooked. Now, an international team led by the University of Göttingen and Humboldt University Berlin, introduce the concept of 'anthropogenic resistance', which should be studied to ensure sustainable landscapes for wildlife and people for the future.
Languages differ in the sounds they use. The Japanese language, for example, does not distinguish between "r" and "l" sounds as in "rock" versus "lock." Remarkably, infants become attuned to the sounds of their native language before they learn to speak. One-year-old babies, for example, less readily distinguish between "rock" and "lock" when living in an environment where Japanese, rather than English, is spoken.
Scientists have given a fascinating new insight into the next steps to develop fast, energy-efficient, future computing systems that use light instead of electrons to process and store information - incorporating hardware inspired directly by the functioning of the human brain.
A team of scientists, including Professor C. David Wright from the University of Exeter, has explored the future potential for computer systems by using photonics in place of conventional electronics.
Researchers at the University of Maryland, Baltimore County (UMBC) have made strides in automated legal document analytics (ALDA) by creating a way to machine-process the Code of Federal Regulations (CFR). The CFR is a complex document containing policies related to doing business with the federal government. All business affiliates of the federal government must comply with the CFR. For government contracts to be equitably open to a broad range of businesses, policies within the CFR must be accessible.
COLUMBUS, Ohio - Nearly nine out of 10 Americans say they enjoy sports at least a little, but heterosexual men more commonly identify as passionate sports fans, a new study suggests.
A survey of nearly 4,000 American adults found that only 11% said they did not identify as sports fans at all. Over 40% were passionate fans, identifying themselves as being "quite a bit" or "very much so" sports fans.
Trees are often heralded as the heroes of environmental mitigation. They remove carbon dioxide from the atmosphere, which slows the pace of climate change, and sequester nutrients such as nitrogen, which improves water and air quality.
Another wave of COVID-19 is putting millions out of work, while tens of millions more remain unemployed, and Congress debates aid.
Now, a new Boston University School of Public Health (BUSPH) study shows that unemployment help directly translates to people being able to put food on the table.
The CARES Act--passed in March of 2020-- expanded unemployment insurance coverage, amount, and duration.
As any cook knows, some liquids mix well with each other, but others do not. For example, when a tablespoon of vinegar is poured into water, a brief stir suffices to thoroughly combine the two liquids. However, a tablespoon of oil poured into water will coalesce into droplets that no amount of stirring can dissolve. The physics that governs the mixing of liquids is not limited to mixing bowls; it also affects the behavior of things inside cells. It's been known for several years that some proteins behave like liquids, and that some liquid-like proteins don't mix together.
January 29, 2021 -- A study at Columbia University Mailman School of Public Health and Columbia University Irving Medical Center has found that Medicaid expansion in 2014 in New York State was associated with a statistically significant reduction in severe maternal morbidity in low-income women during delivery hospitalizations compared with high-income women. The decrease was even more pronounced in racial and ethnic minority women than in White women. Until now there was little research on the link between ACA Medicaid expansion and maternal health outcomes.
News reports indicate COVID-19 vaccines are not getting out soon enough nor in adequate supplies to most regions, but there may be a larger underlying problem than shortages. A University of California, Davis, study found that more than a third of people nationwide are either unlikely or at least hesitant to get a COVID-19 vaccine when it becomes available to them.
The results are from public polling of more than 800 English-speaking adults nationwide in a study published online earlier this month in the journal Vaccine.
WOODS HOLE, Mass. -- The most powerful substance in the human brain for neuronal communication is glutamate. It is by far the most abundant, and it's implicated in all kinds of operations. Among the most amazing is the slow restructuring of neural networks due to learning and memory acquisition, a process called synaptic plasticity. Glutamate is also of deep clinical interest: After stroke or brain injury and in neurodegenerative disease, glutamate can accumulate to toxic levels outside of neurons and damage or kill them.
Below please find a summary and link(s) of new coronavirus-related content published today in Annals of Internal Medicine. The summary below is not intended to substitute for the full article as a source of information. A collection of coronavirus-related content is free to the public at http://go.annals.org/coronavirus.
RIVERSIDE, Calif. -- When we step on the car brake upon seeing a red traffic light ahead, a sequence of events unfolds in the brain at lightning speed.
The image of the traffic light is transferred from our eyes to the visual cortex, which, in turn, communicates to the premotor cortex -- a section of the brain involved in preparing and executing limb movements. A signal is then sent to our foot to step on the brake. However, brain region that helps the body go from "seeing" to "stepping" is still a mystery, frustrating neuroscientists and psychologists.