One cell is all it takes to rebuild a complete, functioning flatworm, researchers have learned. The animals possess a special type of cell throughout their bodies, which shares some qualities with human embryonic stem cells. If scientists can find out how this special cell works, they could someday study ways to use the cells for human tissue regeneration.
The findings are the first time pluripotent stem cells have been found in an adult animal, according to researchers at MIT and the Howard Hughes Medical Institute.
Cy Young-winning pitcher Bartolo Colon is back in a big way this season, having claimed a spot in the New York Yankees starting rotation after not throwing a pitch during the 2010 season following elbow surgery and the usual shoulder problems that accompany a career as a major league fastballer.
By Ryan BradleyPosted 05.12.2011 at 2:44 pm 0 Comments
Humans are not good at delivering drugs. Doctors, nurses, pharmacists and pharmacy techs can mix pills up, provide too many or too few, or fail to dispense them quickly enough. In some cases, controlled substances disappear from hospitals, bound for the black market. Medication errors lead to some 1.5 million “preventable drug-related injuries” every year, at a cost of $3.5 billion, a report by the National Academies found. The stakes are highest in trauma units, where lifesaving drugs must be given within the “golden hour”--when medications are most effective.
Labs-on-a-chip are useful tools for diagnosing diseases, but most can only pick out one or two sickness signatures amid an array of symptoms. The X Prize Foundation, responsible for innovation challenges in anything from spacecraft to oil spills, wants an all-purpose mobile device that can diagnose a patient better than a doctor. A tricorder!
Concussions have been getting a lot of air time lately, not only as evidence has emerged among head trauma-heavy populations like NFL players that their lifestyles may be doing serious long-term damage to their brains, but also because soldiers overseas are particularly vulnerable to them thanks to the tactics of insurgent warfare.
Researchers at Vanderbilt looking for better ways to control the spread of malaria have stumbled across an insect repellent that is thousands of times stronger than DEET. But it doesn’t just work to confuse malaria-carrying mosquitoes. This new compound works against all insects, including flies, ants, and moths.
Scanner microscopes are used for inspecting entire areas in great detail--looking for counterfeit money, say, or scanning a patient's skin for possibly dangerous growths. But these microscopes typically scan by moving back and forth. This new microscope is totally redesigned, and scans an entire area at once.
A synthetic blood substitute is something of a holy grail in medical research. Many potential synthetics have been tried--DARPA has even put a blood substitute before the FDA--but most have been disappointingly ineffective. So it's pretty significant that an experimental synthetic blood substitute derived from cow plasma has brought an Australian woman back from the brink of death.
Back in 2002, psychologists at the State University of New York at Albany published a study in the Archives of Sexual Behavior looking at the potential role of semen in alleviating depression in women. The researchers presented evidence supporting an earlier hypothesis that the hormones in semen have a mood-boosting effect on women.
Los Alamos National Labs is often associated with bombs, and the one it dropped today is no less likely to stir up a firestorm. Figuratively speaking, of course. That simmering controversy surrounding cell phone signals’ effect on biological tissue surfaced again today via a Los Alamos researcher who says the microwaves emitted by cell phones can interact with human tissues in an entirely new way that has yet to be taken into account.