ANN ARBOR, Mich.---Pure organic compounds that glow in jewel tones could potentially lead to cheaper, more efficient and flexible display screens, among other applications.
University of Michigan researcher Jinsang Kim and his colleagues have developed a new class of material that shines with phosphorescence---a property that has previously been seen only in non-organic compounds or organometallics.
(PORTLAND, Ore.) February 14, 2011 — A commonly prescribed osteoporosis drug is associated with a slightly elevated risk of developing the rare, but serious condition, osteonecrosis of the jaw; nonetheless the risk remains extremely low. These findings are published online in the Journal of Dental Research, the official journal of the International and American Associations for Dental Research. Although the findings are provocative, study authors say they should be carefully considered against the large benefit of these drugs to prevent and treat osteoporosis.
ANN ARBOR, Mich.---Scientists have discovered a molecular assistant called Spy that helps bacteria excel at producing proteins for medical and industrial purposes.
Bacteria are widely used to manufacture proteins used in medicine and industry, but the bugs often bungle the job. Many proteins fall apart and get cut up inside the bacteria before they can be harvested. Others collapse into useless tangles instead of folding properly, as they must in order to function normally.
Culling will not stop the spread of a deadly fungus that is threatening to wipe out hibernating bats in North America, according to a new mathematical model.
White-nose syndrome, which is estimated to have killed over a million bats in a three year period, is probably caused by a newly discovered cold-adapted fungus, Geomyces destructans. The new model examines how WNS is passed from bat to bat and concludes that culling would not work because of the complexity of bat life history and because the fungal pathogen occurs in the caves and mines where the bats live.
New research shows a link between use of two pesticides, rotenone and paraquat, and Parkinson's disease. People who used either pesticide developed Parkinson's disease approximately 2.5 times more often than non-users.
The study was a collaborative effort conducted by researchers at the National Institute of Environmental Health Sciences (NIEHS), which is part of the National Institutes of Health, and the Parkinson's Institute and Clinical Center in Sunnyvale, Calif.
Montreal, February 14, 2010 – A new study has confirmed an old adage: A family that plays together stays together. Researchers from Concordia University and Wilfrid Laurier University examined the ways grandparents can maintain close ties with their adult grandchildren. True to the old maxim, recreation emerged as the glue sealing intergenerational bonds.
Atrial Fibrillation (AF) is the most common cardiac arrhythmia (abnormal heart rhythm). Its name comes from the fibrillating (i.e., quivering) of the heart muscles of the atria, instead of a coordinated contraction. The result is an irregular heartbeat, which may occur in episodes lasting from minutes to weeks, or it could occur all the time for years. Atrial fibrillation alone is not in itself generally life-threatening, but it may result in palpitations, fainting, chest pain, or congestive heart failure.
One of the most important genes in the human genome is called p53 and its function is to suppress tumours, according to Roger Leng, a researcher in the Faculty of Medicine & Dentistry. Leng has discovered the mechanism by which p53 is inactivated in cancerous cells, allowing tumours to grow.
"Successful completion of the proposed experiments could lead to novel anti-cancer therapies that could potentially improve the prognosis for cancer patients and reduce the public health burden from cancer," said Leng.
A study by researchers at the UCLA Stroke Center found that stroke and cardiovascular disease have exacted an enormous toll on Hollywood stars.
The findings were presented at the American Heart Association/American Stroke Association's International Stroke Conference (ISC) in Los Angeles on Feb. 10.
Two scientific publications report on improved methods for determining the amounts of flavanol antioxidants in cocoa and chocolate. The research, sponsored by The Hershey Center for Health and Nutrition, was a collaboration between scientists at The Hershey Company and other scientific laboratories.
More than 14 million visits were made to physicians' offices in 2008 by patients with knee problems. Five new studies presented at the 2011 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS) look at the effect that obesity has on knee arthritis and a patient's ability to recover from knee surgery.
Does Obesity Cause Irreparable Damage To Knees Despite Weight Loss?
COLLEGE PARK, Md. – One of North America's most famous Revolutionary-era buildings – a lone-surviving testament to an Enlightenment ideal – has a hidden West African face, University of Maryland archaeologists have discovered.
Their excavation at the 1785 Wye “Orangery” on Maryland's Eastern Shore – the only 18th century greenhouse left in North America – reveals that African American slaves played a sophisticated, technical role in its construction and operation. They left behind tangible cultural evidence of their involvement and spiritual traditions.
Sleeping Beauty's kingdom was overgrown by vines when she fell into a deep sleep. Researchers at the Smithsonian in Panama and the University of Wisconsin at Milwaukee received more than a million dollars from the U.S. National Science Foundation to discover why real vines are overtaking the American tropics. Data from eight sites show that vines are overgrowing trees in all cases.
CHICAGO --- If a human cell and a bacterial cell met at a speed-dating event, they would never be expected to exchange phone numbers, much less genetic material. In more scientific terms, a direct transfer of DNA has never been recorded from humans to bacteria.
Until now. Northwestern Medicine researchers have discovered the first evidence of a human DNA fragment in a bacterial genome – in this case, Neisseria gonorrhoeae, the bacterium that causes gonorrhea. Further research showed the gene transfer appears to be a recent evolutionary event.