الجمعة، 25 مايو 2012

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News


'Personality genes' may help account for longevity

Posted: 24 May 2012 06:53 PM PDT

Researchers have found that personality traits like being extroverted, enjoying laughter and staying engaged may also be part of the longevity genes mix that allows some people to reach age 100 and beyond.

Pivotal role for proteins: From helping turn carbs into energy to causing devastating disease

Posted: 24 May 2012 11:35 AM PDT

Research into how carbohydrates are converted into energy has led to a surprising discovery with implications for the treatment of a perplexing and potentially fatal neuromuscular disorder and possibly even cancer and heart disease.

New clues about cancer cell metabolism: Smallest amino acid, glycine, implicated in cancer cell proliferation

Posted: 24 May 2012 11:34 AM PDT

Researchers have looked across 60 well-studied cancer cell lines, analyzing which of more than 200 metabolites were consumed or released by the fastest dividing cells. Their research yields the first large-scale atlas of cancer metabolism and points to a key role for the smallest amino acid, glycine, in cancer cell proliferation.

Device may inject a variety of drugs without using needles

Posted: 24 May 2012 10:47 AM PDT

A new device delivers a tiny, high-pressure jet of medicine through the skin without the use of a hypodermic needle.

Persistent sensory experience is good for aging brain

Posted: 24 May 2012 09:32 AM PDT

Despite a long-held scientific belief that much of the wiring of the brain is fixed by adolescence, a new study shows that changes in sensory experience can cause massive rewiring, even as one ages. The study also found this rewiring involves fibers that supply the primary input to the cerebral cortex, which is responsible for sensory perception, motor control and cognition. These findings may open new avenues of research on brain remodeling and aging.

Nuisance seaweed found to produce compounds with biomedical potential

Posted: 24 May 2012 09:32 AM PDT

A seaweed considered a threat to the healthy growth of coral reefs in Hawaii may possess the ability to produce substances that could one day treat human diseases, a new study has revealed.

Anti-psychotic drug pushes cancer stem cells over the edge

Posted: 24 May 2012 09:30 AM PDT

An anti-psychotic drug used to treat schizophrenia appears to get rid of cancer stem cells by helping them differentiate into less threatening cell types. The discovery comes after researchers screened hundreds of compounds in search of those that would selectively inhibit human cancer stem cells, and it may lead rather swiftly to a clinical trial.

Male fertility genes discovered

Posted: 24 May 2012 09:30 AM PDT

A new study has revealed previously undiscovered genetic variants that influence fertility in men. The findings shed much-needed light on human reproduction and might provide answers for countless men suffering from infertility.

Protein necessary for behavioral flexibility discovered

Posted: 24 May 2012 09:28 AM PDT

Researchers have identified a protein necessary to maintain behavioral flexibility, which allows us to modify our behaviors to adjust to circumstances that are similar, but not identical, to previous experiences. Their findings may offer new insights into addressing autism and schizophrenia—afflictions marked by impaired behavioral flexibility.

Key gene found responsible for chronic inflammation, accelerated aging and cancer

Posted: 24 May 2012 09:28 AM PDT

Researchers at NYU School of Medicine have, for the first time, identified a single gene that simultaneously controls inflammation, accelerated aging and cancer.

Method to delay aging of stem cells developed

Posted: 24 May 2012 06:20 AM PDT

Stem cells are essential building blocks for all organisms, from plants to humans. They can divide and renew themselves throughout life, differentiating into the specialized tissues needed during development, as well as cells necessary to repair adult tissue. Therefore, they can be considered immortal, in that they recreate themselves and regenerate tissues throughout a person's lifetime, but that doesn't mean they don't age. They do, gradually losing their ability to effectively maintain tissues and organs. Now, researchers have uncovered a series of biological events that implicate the stem cells' surroundings, known as their "niche," as the culprit in loss of stem cells due to aging. This research has implications for treatment of age-related diseases and for the effectiveness of regenerative medicine.

DNA vaccine and duck eggs protect against hantavirus disease

Posted: 23 May 2012 08:50 AM PDT

Scientists have successfully protected laboratory animals from lethal hantavirus disease using a novel approach that combines DNA vaccines and duck eggs.

More physical education in schools leads to better grades, study suggests

Posted: 23 May 2012 08:47 AM PDT

More physical education in schools leads to better motor skills and it can also sharpen students' learning ability, new research shows. The differences are especially clear among boys.

Socioeconomics may affect toddlers' exposure to flame retardants: Hand wipes indicate PBDE levels

Posted: 23 May 2012 07:28 AM PDT

A study of toddlers suggests that exposure to potentially toxic flame-retardant chemicals may be higher in nonwhite toddlers than in white toddlers.

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