Brightsurf Science News & Current Events

April 26, 2001
Field Museum anthropologists establish date and importance of the Americas' oldest city
Radiocarbon dates of plant fibers indicate that Caral (120 miles north of Lima, Peru) was home to the earliest known urban settlement - with monumental corporate architecture and irrigation agriculture - in the New World.

Quality improvement project boosts hospital care for older heart patients
Hospitals can significantly improve the care of people 65 years old and older who are admitted for acute heart attack by adopting specific treatment guidelines shown by research to be highly effective.

Prolonged breast-feeding improves height but not weight in rural Senegal
Prolonged breast-feeding is frequently associated with malnutrition in developing countries.

First observations of planetary birth, death observed by Colorado researchers
A University of Colorado at Boulder team has observed the first phases of planetary growth and death by confirming tiny particles orbiting in dusty disks surrounding several young sun-like stars in the Orion Nebula are clumping together while other disks in the nebula are being rapidly destroyed by the violent environment.

Oldest evidence of city life in the Americas reported in Science, early urban planners emerge as power players
The ancient Peruvian site of Caral may have been one of the first urban centers in the Americas, thriving more than a thousand years before other known cities, according to a study in the 27 April issue of the international journal, Science. This news release is also available in French and Spanish.

Molecular 'gateways to death' identified
HHMI researchers have identified two key components of what are likely

Researchers use cloning technology to produce embryonic stem cell lines from adult mice
Embryonic stem cells can be derived from benign biopsies of adult mice and can become neurons and germ cells, report researchers from The Rockefeller University and Sloan- Kettering Institute in the April 27 issue of Science.

Costs of caring for California's Alzheimer patients will triple by 2040, say UCSF researchers
The costs of caring for California community residents with Alzheimer's disease will increase 83 percent by 2020 and an additional 59 percent by 2040, according to UCSF researchers from the Institute for Health and Aging.

UT Southwestern researchers find gene for inherited form of high cholesterol
Researchers at UT Southwestern Medical Center at Dallas have located the gene that, when mutated, is responsible for autosomal recessive hypercholesterolemia (ARH), an inherited form of high cholesterol characterized by low-density lipoprotein levels of 350 to 600 milligrams per deciliter.

Using unique seismometer array, seismologists map mantle flow
Seismologists at Washington University in St. Louis and colleagues at Brown University and Scripps Institute of Oceanography have mapped the flow pattern of the earth's mantle in one of the most seismically active regions in the world.

Science paper suggests strategy to more effectively control harmful ozone
A report in the 27 April issue of the journal Science suggests that current U.S.

Weight regain in anorexia nervosa results in abnormal fat redistribution
Among anorexia nervosa patients, self-perceived body image is an important component of successful recovery, and the pattern of weight regain may have psychological significance.

High homocysteine levels are associated with decreased memory capability after age 60
In recent studies, Alzheimer disease and dementia after multiple strokes have been linked to extremely high serum homocysteine concentrations.

AAAS Science and Technology Policy Colloquium
AAAS will be holding its 26th Annual Colloquium on Science and Technology in Washington D.C. this May.

UPenn researchers use gene therapy to reverse blindness in dogs
Researchers from Scheie Eye Institute at the University of Pennsylvania Medical Center have developed a gene therapy protocol that sucessfully restored sight in dogs afflicted with a variation of Leber congenital amaurosis (LCA) -- a severe form of retinal degeneration that, in humans, renders infants permanently blind.

American Thoracic Society news tips for April
The American Thoracic Society's journal for April features the following newsworthy studies: persons who suffer from severe asthma and who are also affected by psychopathology create increased health care costs compared to non- psychiatric severe asthmatics; new research links a common infectious agent with asthma; and an executive summary report details the best validated disease management concepts for chronic obstructive pulmonary disease.

Stress echocardiography spots diabetic patients at increased risk of heart attack, cardiac death
Abnormalities detected using ultrasound imaging after treadmill exercise testing can help doctors identify which patients with diabetes are at most risk for a heart attack or cardiac death, according to a Mayo Clinic study published in the May issue of the Journal of the American College of Cardiology.

Potential new anthrax therapy discovered
A study by Harvard Medical School researchers in the April 27 Science suggests a mutation in the anthrax toxin, which prevents poisoning, may lead to a double-pronged pharmaceutical that is equally effective as a vaccine and as a faster-acting and more broadly protective therapy than currently available.

Gene therapy restores vision to dogswith inherited disease
Scientists at Cornell, the University of Pennsylvania and the University of Florida, Gainesville have used gene therapy to restore vision in dogs blinded by an inherited retinal degenerative disease.

Pioneer oceanographer receives A. A. Michelson Award
Dr. Walter Munk, a pioneering oceanographer, was honored yesterday by the Navy League of the United States as the recipient of its 1999 A.A.

Information Revolution Commission at U-M releases report
University of Michigan's Information Revolution Commission today (April 27) issued a report that calls for creating a

In gene therapy first, scientists restore vision to dogs born blind
For the first time ever, animals that were born blind gained the ability to see after undergoing gene therapy, according to research from the University of Florida, Cornell University and the University of Pennsylvania.

Artificial lung on the horizon, reports University of Pittsburgh researcher at International Society for Heart and Lung Transplantation meeting
A University of Pittsburgh researcher has developed an artificial lung that could save people's lives with acute lung diseases and injuries.

Understanding the late effects of childhood cancer: a "mind-body approach"
As the pool of survivors of childhood cancer grows, research at The Children's Hospital of Philadelphia focuses on the late effects, on body and mind, of the radiation, chemotherapy and surgery used to cure the cancer.

Researchers link cancer suppressor to polycystic kidney disease control
Researchers at the CIIT Centers for Health Research and the University of Texas M.D.

Researchers unfold single RNA molecules using mechanical force
By applying precise, mechanical forces to the ends of individual RNA molecules, HHMI researchers have successfully unfolded and refolded the molecules.

Scientists: nutritional deficiency can boost influenza virus damage
University of North Carolina at Chapel Hill researchers have discovered that inadequate intake of selenium, a trace mineral, boosts damage caused by influenza viruses.

Sea grant researchers developing new stress test for fish
Sea Grant researchers have identified naturally occurring antibiotics in channel catfish that may be a promising indicator for monitoring fish health in the expanding aquaculture industry nationwide.

New dramatic drop in mortality rates for type 1 diabetes In Allegheny County, finds University Of Pittsburgh study
Mortality rates for type 1 diabetics are on the decline for the first time in Allegheny County, Pa. since researchers at the University of Pittsburgh began tracking rates 20 years ago. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to