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Doctors widely prescribe drugs without adequate scrutiny

In choosing which drugs to prescribe, doctors often select medications for patients despite a lack of conclusive medical evidence of their effects and safety, according to a new study led by a researcher at the Stanford University School of Medicine.

9 May 2006

Social stress prompts hamsters to overeat

Put a mouse or a rat under stress and what does it do? It stops eating. Humans should be so lucky. When people suffer nontraumatic stress they often head for the refrigerator, producing unhealthy extra pounds.

9 May 2006

Autopsy study of mild cognitive impairment

A study led by Mayo Clinic demonstrates that mild cognitive impairment, a memory disorder considered a strong early predictor of Alzheimer's disease, not only results in behavioral symptoms, but also structural changes that can be identified in the brain. Findings will be published in the May issue of Archives of Neurology.

9 May 2006

Renewed interest in studying influenza A viruses

The emergence of the avian influenza virus H5N1 that is currently devastating chicken flocks in many countries and threatening to unleash a worldwide epidemic among humans has triggered a renewed interest among scientists in studying influenza A viruses, according to investigators at St. Jude Children's Research Hospital.

9 May 2006

Europe wide study to examine causes of asthma

The GABRIEL project, funded through an EC Framework 6 grant, involves over 150 scientists from 14 European countries and Russia, using the latest research across a variety of disciplines, including genetics, epidemiology and immunology, to identify key factors in the development of asthma bronchiale.

9 May 2006

Summer sun safety - research reveals significant link to melanoma

Fifty years of medical studies show that sun exposure is a primary component in the development of melanoma, the most serious and deadly type of skin cancer, report leading dermatologists in the April 2006 issue of Dermatologic Surgery.

9 May 2006

Silica nanoparticles shown to boost reflection of ultrasonic energy

Targeted nanoparticles may eventually help physicians detect the very earliest stages of cancer using readily available ultrasound equipment, a new study from investigators at The Ohio State University suggests.

9 May 2006

Nanoparticle system for imaging and delivering drugs to tumors

By melding magnetic and luminescent properties with an easily modified surface, a team of investigators at the National Research Council of Canada have created what could prove to be a highly versatile nanoparticle system for imaging and delivering drugs to tumors.

9 May 2006

Scientists assemble a complete viral coat around a gold nanoparticle

Using a short piece of DNA as a template, a team of investigators at North Carolina State University has assembled a complete viral coat around a gold nanoparticle.

9 May 2006

Effective gene suppression using small interfering RNA in hard-to-transfect human T cells

A technical advance in laboratory techniques may provide biology researchers broader access to RNA interference, a process of blocking the activity of targeted genes. RNA interference has recently emerged as an important tool in studying how genes function in normal biological processes and in disease.

9 May 2006

Beauty and the beholder: Toward an integrative model of communication source effects

Beautiful young models are used to sell everything from computer processors to motor oil. But is it really effective to use a pretty face to market something that has nothing to do with physical attractiveness?

9 May 2006

$Childhood arthritis increases the risk of fractures$

Childhood arthritis increases the risk of fractures

Childhood arthritis increases the risk of fractures, particularly during adolescence, according to a large study of British patient records. The researchers say that more targeted treatments promoting bone health would benefit patients with childhood-onset arthritis throughout their lifespan.

8 May 2006

Scientists discover molecular security mechanism for keeping gene mutations in check

Everyone knows mutations - genetic mistakes in DNA, the material of heredity - are bad: The more mutations in the cell's DNA, the higher the risk of cancer developing.

8 May 2006

Discovery of new type of cell that generates crucial immune system cells

A new type of cell that generates crucial cells of the immune system has been discovered at The Walter and Eliza Hall Institute.

8 May 2006

Study highlights increased passive smoking risk at home

Most non-smoking mothers recognise the need to protect sick children from smoking husbands, but persuading their spouse to quit isn't always an option, according to research published in the latest Journal of Advanced Nursing.

8 May 2006

'Autistic' mice may provide clue to cause of autism

Scientists in the United States have apparently created "autistic" mice by deleting a gene in key parts of the brain.

8 May 2006

Calorie counting may lessen the effects of aging

A lifelong habit of trimming just a few calories from the daily diet can do more than slim the waistline - a new study shows it may help lessen the effects of aging.

8 May 2006

New understanding of chromosomal glue

Researchers have a new understanding of the process cells use to ensure that sperm and eggs begin life with exactly one copy of each chromosome - a process that must be exquisitely regulated to prevent problems such as miscarriages and mental retardation.

8 May 2006

Diffusion tensor imaging provides clearer picture of cannabis effect on brain

Diffusion tensor imaging, a newly developed magnetic resonance imaging technique, could enable researchers to gain a better understanding of the effects of cannabis on the brain.

8 May 2006