Genetic changes take place in various human embryonic stem cells lines as they multiply in the laboratory, some of which resemble the DNA abnormalities typical of cancer cells. For the first time, researchers could shortlist a number of genes that map inside or near the mutated sites. Above, colonies of human embryonic stem cells (green) with feeder cells (dark red). (Courtesy: U. Sheffield)
U. SHEFFIELD (UK)—Scientists are closer to identifying and avoiding the adverse DNA changes that naturally occur when human embryonic stem cells are multiplied in the laboratory—changes that could hamper their future medical use. Continue…
Tuesday, April 13, 2010 10:52 - 3 Comments
Earth & Environment - Apr 7, 2010 9:40 - 0 Comments
Ice sheet melt triggered ancient Big Freeze
U. SHEFFIELD (UK)—The main cause of a rapid global cooling period, known as the Big Freeze or Younger Dryas, that occurred nearly 13,000 years ago was a mega-flood path across North America which channeled melt-water from a giant ice sheet into the oceans triggering the cold snap. (more…)
Health & Medicine - Mar 3, 2010 20:37 - 1 Comment
Putting gene duo to work for Parkinson’s
U. SHEFFIELD (UK)—Researchers have identified for the first time how two genes work together to remove damaged mitochondria from nerve cells. The finding offers a new lead for potential Parkinson’s treatments. (more…)
Health & Medicine - Feb 25, 2010 12:03 - 1 Comment
As testosterone dips, quality of life dims
U. SHEFFIELD (UK)—Male cancer survivors who develop testosterone deficiency often report having impaired quality of life and reduced energy levels, indicating replacement therapy may benefit some patients. (more…)
Science & Technology - Jan 27, 2010 12:23 - 0 Comments
Massive black hole found devouring star
U. SHEFFIELD (UK)—Researchers have detected a stellar-mass black hole much farther away than any other previously known. With a mass of about 20 times that of the Sun, it is the second most massive stellar-mass black hole ever found and is entwined with a star that will soon become a black hole itself. (more…)
