BLOOMINGTON, Ind. -- The sequences of nonsense DNA that interrupt genes could be far more important to the evolution of genomes than previously thought, according to a recent Science report by Indiana University Bloomington and University of New Hampshire biologists.
Body
Jerusalem – A gene which is essential for stem cells' capabilities to become any cell type has been identified by researchers at the Hebrew University of Jerusalem and the University of California, San Francisco.
The discovery represents a further step in the ever-expanding field of understanding the ways in which stem cells develop into specific cells, a necessary prelude towards the use of stem cell therapy as a means to reverse the consequences of disease and disability.
Ancient DNA retrieved from extinct horse species from around the world has challenged one of the textbook examples of evolution – the fossil record of the horse family Equidae over the past 55 million years.
The study, published today in the Proceedings of the National Academy of Sciences, involved an international team of researchers and the Australian Centre for Ancient DNA (ACAD) based at the University of Adelaide.
Only the modern horse, zebras, wild asses and donkey survive today, but many other lineages have become extinct over the last 50,000 years.
Monterotondo, 10 December 2009 - Almost a century after it was discovered in fruit flies with notches in their wings, the Notch signalling pathway may come to play an important role in the recovery from heart attacks. In a study published today in Circulation Research, scientists at the European Molecular Biology Laboratory (EMBL) in Monterotondo, Italy, are the first to prove that this signalling pathway targets heart muscle cells and thus reveal its crucial role in heart development and repair.
CHICAGO (December 10, 2009) – New research published in the December issue of the Journal of the American College of Surgeons finds that the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) is a powerful tool for assessing outcomes of uncommon, high-risk surgical procedures, including pancreatic necrosectomy. This is the first time that national data on this particular procedure has been available and analyzed, and the data from ACS NSQIP showed that patients undergoing pancreatic necrosectomy had better outcomes than predicted.
FT. LAUDERDALE, FL, December 10, 2009 - The prized white marlin, sought by anglers in million dollar prize tournaments and captured incidentally in commercial fisheries, is among the most overfished marine species under international management and the subject of contentious debate on how to best achieve its recovery. Now a new study published today in the journal Endangered Species Research casts uncertainty on the accuracy of current knowledge of white marlin biology and previous population assessments, which form the basis of management and conservation policy.
Brussels, 9 December 2009 - Members of the European Parliament Heart Group (MEP HG) meet today, in Brussels, with the Cardiology profession and representatives of national Heart Foundations to evaluate the achievements at EU level in combating Cardiovascular Disease (CVD), and to reveal the need for further action.
Results of a preliminary study by scientists at the National Institutes of Health and Johns Hopkins show that "mini" stem cell transplantation may safely reverse severe sickle cell disease in adults.
The phase I/II study to establish safety of the procedure, published December 10 in the New England Journal of Medicine, describes 10 patients with severe sickle cell disease who received intravenous transplants of blood-forming stem cells. The transplanted stem cells came from the peripheral blood of healthy related donors matched to the patients' tissue types.
Patients who experience dermatologic toxic effects from epidermal growth factor receptor inhibitors (EGFRIs) have a high prevalence of skin and nail infections, according to a new study published online December 9 in the Journal of the National Cancer Institute.
LA JOLLA, CA – December 9, 2009 –Even small errors made by cells during protein production can have profound disease effects, and nature has developed ways to uncover these mistakes and correct them. Though in the case of one essential protein building block—the amino acid alanine—nature has been extra careful, developing not one, but two checkpoints in her effort to make sure that this component is used correctly.
PITTSBURGH—The holidays can be challenging for even the most diligent dieters. But are weekends just as detrimental? Researchers at the University of Pittsburgh and Quinnipiac University in Hamden, Conn., found that weekend eating patterns change significantly.
Although Charles Darwin is most well-known for his book On the Origin of Species, in which he described the process of natural selection, he greatly contributed to many specific fields within biology.
The best way to prevent a fracture is to stop bones from reaching the point where they are prone to breaking, but understanding the process of how bones form and mature has been challenging. Now researchers at the University of Houston department of health and human performance have created a process that grows real human bone in tissue culture, which can be used to investigate how bones form and grow.
Despite their ability to fly, tropical birds waited until the formation of the land bridge between North and South America to move northward, according to a University of British Columbia study published this week in the Proceedings of the National Academy of Sciences Early Edition.