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| Medicine articles |
Combination of personality traits increases risk for heart disease
Frequent bouts of depression, anxiety, hostility and anger are known to increase a person's risk for developing coronary heart disease, but a combination of these "negative" personality traits may put people at especially serious risk, according to a study by researchers at Duke University Medical Center.
The first million have been sequenced
The Neandertal people are humanity's closest extinct relatives. Their genome could supply the key to the genetic changes that have taken place during the development of modern humans. Using specially developed technology, scientists at the Max Planck Institute for Evolutionary Anthropology in Leipzig and from the 454 Life Sciences Corporation in the US have now found the first million base pairs of the Neandertal genome. This technology allows them to copy the few short pieces of DNA which have survived for 38,000 years in fossilized bones. The researchers assume that they will be able to present a draft version of the whole genome in two years.
Geneticists aim to unravel where chimp and human brains diverge
Six million years ago, chimpanzees and humans diverged from a common ancestor and evolved into unique species. Now UCLA scientists have identified a new way to pinpoint the genes that separate us from our closest living relative and make us uniquely human.
Decoded sea urchin genome shows surprising relationship to humans
The Sea Urchin Genome Sequencing Project (SUGSP) Consortium, led by the Human Genome Sequencing Center at Baylor College of Medicine (BCM-HGSC) in Houston, announced the decoding and analysis of the genome sequence of the sea urchin, Strongylocentrotus purpuratus.
Mysterious 'neural noise' actually primes brain for peak performance
Researchers at the University of Rochester may have answered one of neuroscience's most vexing questions—how can it be that our neurons, which are responsible for our crystal-clear thoughts, seem to fire in utterly random ways?
Precision radiation can destroy tumors that surgery cannot reach
Debora Tisdale didn't want to lose her heart in the process of saving her cancerous breast. She feared that during radiation treatment, the searing beams intended to attack her breast tumor could also inadvertently strike her healthy heart.
Social cues and illusion
The mechanisms that govern visual perception are only partly understood by scientists, and in fact much of what we know about how the human visual system works stems from investigations into our susceptibility to visual illusions.
Lasers let scientists test gene function in butterfly wings
The researchers demonstrated their method by stenciling the silhouette of a butterfly right on the surface of a butterfly's wing, an affect that they achieved by using lasers to turn on fluorescent marker genes in this very precise pattern.
Exercise shown to reverse brain deterioration brought on by aging
In a study published in the November issue of the Journal of Gerontology: Medical Sciences, psychology and neuroscience professor Arthur F. Kramer and his collaborators show that moderate exercise increases brain volume in older adults.
Touch tracking bypasses mind control
"Most normal people cannot simultaneously draw a circle with one hand and a square with the other," says David Rosenbaum, distinguished professor of psychology and director of Penn State's Laboratory For Cognition and Action.
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Pilot study succesful in taming allergic reactions to food
Children who were allergic to eggs were able to essentially overcome their allergy by gradually consuming increased quantities of eggs over time, researchers at Duke University Medical Center and the University of Arkansas for Medical Sciences have found in a small pilot study.
Boys will be boys…but do you know why?
There's more to understanding and getting along with boys and young men than the old adage "hammers and nails and puppy dog tails."
Myelin to blame for many neuropsychiatric disorders
What makes the human brain unique? Of the many explanations that can be offered, one that doesn't come readily to mind is — myelin.
Gene therapy inhibits epilepsy in animal study
Researchers at Boston University School of Medicine (BUSM) and The Children's Hospital of Philadelphia/University of Pennsylvania School of Medicine, have for the first time inhibited the development of epilepsy after a brain injury in animals using a virus that over-expresses a component of a neurotransmitter receptor in neurons.
A stunning new look at déjà vu
A blind man suffering déjà vu. It sounds like a contradiction in terms – but the first case study of its kind has turned the whole theory of déjà vu on its head.
New wide-angle lens produces pictures without distortion
South Korean researchers have designed and built an inexpensive optical lens that collects light from a large area and produces a virtually distortion-free wide-angle image.
Robotic pets may be bad medicine for melancholy
In the face of techno-doomsday punditry, Sherry Turkle has long been a proponent of the positive. In her books, "The Second Self: Computers and the Human Spirit" and "Life on the Screen: Identity in the Age of the Internet," Turkle has explored the relationship between human and machine and found much to ponder and even praise.
Parental genes do what's best for baby
A molecular 'battle of the sexes' long considered the major driving force in a baby's development is being challenged by a new genetic theory of parental teamwork. Biologists at The University of Manchester say the prevailing view that maternal and paternal genes compete for supremacy in their unborn offspring fails to answer some important questions relating to child development.
Exercise when young may reduce risk of fractures later in life
Running and jumping during childhood is more than child's play; it provides lifelong benefits for future bone health and appears to reduce the risk of fractures later in life according to a Journal of Bone and Mineral Research study by Indiana University-Purdue University Indianapolis (IUPUI) researchers.
New finding points way to foiling anthrax's tricks
University of California, Berkeley, chemists have discovered a trick that anthrax bacteria use to make an end run around the body's defenses, but which may turn out to be their Achilles' heel.
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| Quotes | By convention!
cussed Tom airily.
Cmon Scully... Itll be a nice trip through the woods-Fox Mulder
But what ... is it good for?
Engineer at IBM, 1968, commenting on the microchip.
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