Using mathematical theory, UC Irvine scientists have shed light on one of cancer’s most troubling puzzles -- how cancer cells can alter their own genetic makeup to accelerate tumor growth. The discovery shows for the first time why this change occurs, providing insight into how cancerous tumors thrive and a potential foundation for future cancer treatments.
The extinction of many large mammals at the end of the Ice Age may have packed an even bigger punch than scientists have realized. To the list of victims such as woolly mammoths and saber-toothed cats, a Smithsonian-led team of scientists has added one more: a highly carnivorous form of wolf that lived in Alaska, north of the ice sheets.
Wolves were generally thought to have survived the end-Pleistocene extinction relatively unscathed. But this previously unrecognized type of wolf appears to have vanished without a trace some 12,000 years ago.
In the first trial of its kind in the world, 60 patients who have recently suffered a major heart attack will be injected with selected stem cells from their own bone marrow during routine coronary bypass surgery.
The Bristol trial will test whether the stem cells will repair heart muscle cells damaged by the heart attack, by preventing late scar formation and hence impaired heart contraction.
University of Nottingham scientists have been instrumental in helping to establish a pioneering branch of chemistry in Ethiopia.
They have helped to introduce Green Chemistry, an emerging field of sustainable science that will help African nations to meet the challenges of the 21st century.
Green Chemistry focuses on greener ways of creating chemicals, and is now regarded as one of the major routes to more environmentally-friendly production of the chemicals that underpin modern society.
David H. Ingbar MD, president of the American Thoracic Society, today called the proposed standards issued by the Environmental Protection Agency for ozone pollution–commonly known as smog-“unhealthy for America’s kids, unhealthy for America’s seniors, and unhealthy for America.”
“The science is clear,” Dr. Ingbar said, “ozone pollution is causing unnecessary, illnesses and death in America. The proposed EPA standards fall short of providing the protection needed to keep Americans safe from ozone air pollution.”
Bacteria called Dehalococcoides Ethenogenes, discovered in Ithaca sewage sludge in 1997 by James Gossett, Cornell professor of civil and environmental engineering, are now in wide use to detoxify some carcinogenic chemicals but they could be used for a lot more.
These bacteria remove chlorine atoms from molecules and leave less-toxic compounds behind in toxic waste like perchloroethylene (PCE) and trichloroethylene (TCE).
Researchers at Sandia National Laboratories in California have emerged as key players in a state-of-the-art program for the U.S. Army that focuses on the design and manufacturing of a lightweight, high-caliber, self-propelled cannon system.
The weapon system, known as the Non-Line-of-Sight Cannon (NLOS Cannon) is fully automated and can fire at a sustained rate of six rounds per minute. The vehicle, once completed, must be light and agile enough to fit three vehicles comfortably onto a C-17 cargo aircraft.
A major question in evolutionary studies today is how early did humans begin to think and behave in ways we would see as fundamentally modern?
Drinking your coffee black or decaffeinated to keep cholesterol in check? Think again.
Cafestol, a compound found in coffee, elevates cholesterol by hijacking a receptor in an intestinal pathway critical to its regulation, said researchers from Baylor College of Medicine in a report that appears in the July issue of the journal Molecular Endocrinology.
The sea-squirt derived drug trabectedin (ecteinascidinin-743) shows anti-tumour activity in more than half of patients with a specific type of cancer, conclude authors of an Article published early Online and in the July edition of The Lancet Oncology.