Developing renewable energy is the only permanent solution to global warming, University of Arizona astronomer Roger Angel concludes. But should Earth be faced with an abrupt climate crisis, a space sunshade is a technically feasible solution.
One hundred years after the first diagnosis of Alzheimer’s disease Nov. 3, 1906, researchers at the Yerkes National Primate Research Center, Emory University, are focusing on neuroscience, immunology and vaccine research to better understand how AD develops and progresses as well as to advance the treatment and prevention of this progressive brain disorder. AD, which currently affects 20 million Americans, gradually destroys memory and the ability to learn, reason, make judgments and communicate.
Kent State University, in partnership with the Louis Stokes Cleveland Department of Veteran Affairs Medical Center, has created a program that offers veterans the opportunity to take control of their future by obtaining entirely online degrees suited to their educational, physical and mental needs.
Preliminary findings from a University of Florida study show there is little difference in the dose of general anesthesia needed to anesthetize patients in weightless or normal gravity environments. It’s a step forward, but just one of many hurdles researchers face in trying to establish proper medical protocols in space.
When a portion of a zebrafish’s heart is removed, the dynamic interplay between a mass of stem cells that forms in the wound and the protective cell layer that covers the wound spurs the regeneration of functional new heart tissue, Duke University Medical Center scientists have found.
New evidence to explain how a common tropical fish mends a broken heart may suggest methods for coaxing the damaged hearts of mammals to better heal, researchers report. The researchers found that the hearts of zebrafish harbor progenitor cells that spring into action to restore wounded heart muscle. Cells from a membrane layer that surrounds the heart, called the epicardium, follow suit, invading the wounded cardiac tissue and stimulating the growth of new blood vessels.
Genetic research over the past decade has linked Ashkenazi Jewish ethnicity to an increased risk for hereditary breast cancer, so much so that certain gene mutations have become known as “Jewish ancestral mutations.” But a new study released in the November 2006 issue of the American Journal of Public Health challenges this population-based approach, warning that disparities in access to care and other unintended consequences for specific ethic groups can result, and may have already occurred.
A study published in the New England Journal of Medicine shows that treatment for periodontal disease in pregnant women does not result in a lower rate of adverse pregnancy outcomes such as preterm birth and low birth weight. At the same time, the study showed that periodontal treatment during pregnancy is safe. The researchers recommend additional studies to assess the potential benefits of the treatment.
Infant abuse may be perpetuated between generations by changes in the brain induced by early experience, research shows. A research team found that when baby rhesus monkeys endured high rates of maternal rejection and mild abuse in their first month of life, their brains often produced less serotonin, a chemical that transmits impulses in the brain. Low levels of serotonin are associated with anxiety and depression and impulsive aggression in both humans and monkeys.
Multiple organ failure is the main cause of death in intensive care units. A study published today in the journal Critical Care shows that the main risk factors for death in the intensive care unit are central nervous system failure and cardiovascular failure, and the most frequent cause of death is multiple organ failure. In the hospital, once patients have been discharged from the intensive care unit, the main causes of death are malignant tumours and exacerbation of cardiovascular disease.