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| Medicine articles |
Study notes decline in male births in the us and japan
A study published in Environmental Health Perspectives reports that during the past thirty years, the number of male births has decreased each year in the U.S. and Japan. In a review of all births in both countries, the University of Pittsburgh-led study found significantly fewer boys being born relative to girls in the U.S. and Japan, and that an increasing proportion of fetuses that die are male.
Smoking and caffeine may protect against parkinson's disease
In families affected by Parkinson's disease, the people who smoked cigarettes and drank a lot of coffee were less likely to develop the disease, say researchers at Duke University Medical Center.
Model helps researchers 'see' brain development
Large mammals--humans, monkeys, and even cats--have brains with a somewhat mysterious feature: The outermost layer has a folded surface. Understanding the functional significance of these folds is one of the big open questions in neuroscience.
Wired for sound: how the brain senses visual illusions
In a study that could help reveal how illusions are produced in the brain's visual cortex, researchers at the University of California, San Diego (UCSD) School of Medicine have found new evidence of rapid integration of auditory and visual sensations in the brain.
Nanotextured implant materials: blending in, not fighting back
Biomedical engineers are constantly coming up with ways to repair the human body, replacing defective and worn out parts with plastic, titanium, and ceramic substitutes – but the body does not always accept such substitutes seamlessly. Engineers from Brown and Purdue universities have found that simply changing the surface texture of implants can dramatically change the way cells colonize a wide variety of materials.
Little lifesavers: nanoparticles improve delivery of medicines and diagnostics
Tiny, biodegradable particles filled with medicine may also contain answers to some of the biggest human health problems, including cancer and tuberculosis. The secret is the size of the package.
Research center explores how humans process information
Human beings have developed specialized abilities to process information about the world around them in a number of ways. One of our most important mental abilities is spatial intelligence -- the ability to perceive accurately and to recreate or transform aspects of the world.
New research shows why too much memory may be a bad thing
New research from Columbia University Medical Center may explain why people who are able to easily and accurately recall historical dates or long-ago events, may have a harder time with word recall or remembering the day's current events. They may have too much memory – making it harder to filter out information and increasing the time it takes for new short-term memories to be processed and stored.
Human-chimp gene study upsets long-held view
Put a human and a chimpanzee side by side, and it seems obvious which lineage has changed the most since the two diverged from a common ancestor millions of years ago. Such apparent physical differences, along with human speech, language and brainpower, have led many people to believe that natural selection has acted in a positive manner on more genes in humans than in chimps.
Common algae helps illustrate mammalian brain electrical circuitry
Mice whose brain cells respond to a flash of light are providing insight into the complexities of the sense of smell and may ultimately yield a better understanding of how the human brain works.
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Blame the brain for high blood pressure
The novel idea that one cause of high blood pressure lies within the brain, and not the heart or blood vessels, has been put forward by scientists at the University of Bristol and is published this week in the journal Hypertension.
Omega-3 fatty acids affect risk of depression, inflammation
A new study suggests that people whose diets contain dramatically more of one kind of polyunsaturated fatty acid than another may be at greater risk for both clinical depression and certain inflammatory diseases.
A genetic gang of four drives spread of breast cancer
Studies of human tumor cells implanted in mice have shown that the abnormal activation of four genes drives the spread of breast cancer to the lungs. The new studies by Howard Hughes Medical Institute researchers reveal that the aberrant genes work together to promote the growth of primary breast tumors. Cooperation among the four genes also enables cancerous cells to escape into the bloodstream and penetrate through blood vessels into lung tissues.
Researchers zero in on genes that turn a plant's ability to self-pollinate on and off
Some plants need a partner to reproduce. Pollen from one plant pollinates the stigma of another, and a seed is formed. But other plants can self-pollinate, a handy survival mechanism for a lonely plant.
You don't have to be smart to be rich, study finds
It doesn't take a rocket scientist to make a lot of money, according to new research. A nationwide study found that people of below average intelligence were, overall, just about as wealthy as those in similar circumstances but with higher scores on an IQ test.
Malaria-infected mice cured by one dose of new drug
Johns Hopkins University researchers have cured malaria-infected mice with single shots of a new series of potent, long lasting synthetic drugs modeled on an ancient Chinese herbal folk remedy.
Gene study shows three distinct groups of chimpanzees
The largest study to date of genetic variation among chimpanzees has found that the traditional, geography-based sorting of chimps into three populations—western, central and eastern—is underpinned by significant genetic differences, two to three times greater than the variation between the most different human populations.
Prepare CO2 capture and storage now for greater environmental benefit later
CO2 capture and storage can make a major contribution to CO2 reduction in the Netherlands. By the mid-21st century 80 to 110 million tonnes of CO2 per year could be avoided in the sectors energy, industry and transport. This is half of the current CO2 emission. Moreover, this can be realised against acceptable costs concludes Dutch researcher Kay Damen.
Corals: more complex than you?
The humble coral may possess as many genes – and possibly even more – than humans do.
Drinking heavy amounts of alcohol shrinks your brain
Drinking heavy amounts of alcohol over a long period of time may decrease brain volume, according to research that was presented at the American Academy of Neurology's 59th Annual Meeting in Boston, April 28 – May 5, 2007.
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| Quotes | Ive always wanted to be a scientist. That way, I could get a bunch of grants and do research into whether money can really buy happiness.
Kyannke.
Ive always wanted to be somebody, but I see now I should have been more specific.
Lily Tomlin |
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