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Mosquitoes smell DEET and stay away

Spray yourself with a DEET-based insect repellent and the mosquitoes will leave you alone. But why? They flee because of their intense dislike for the smell of the chemical repellent and not because DEET jams their sense of smell, report researchers at the University of California, Davis.

18 Aug 2008

Evolution in the ribosome

A new study of the ribosome, the cell's protein-building machinery, sheds light on the oldest branches of the evolutionary tree of life and suggests that differences in ribosomal structure between the three main branches of that tree are "molecular fossils" of the early evolution of protein synthesis.

18 Aug 2008

Scientists discover platelets play an important early role in promoting cerebral malaria

Platelets - those tiny, unassuming cells that cause blood to clot and scabs to form when you cut yourself - play an important early role in promoting cerebral malaria, an often lethal complication that occurs mostly in children.

18 Aug 2008

New sickle cell unrelated transplant trial

Children's National Medical Center immunologist and blood and marrow transplant physician Naynesh Kamani, MD, will serve as the study co-chair for a new national clinical trial of unrelated donor marrow and umbilical cord blood transplants for severe sickle cell disease.

18 Aug 2008

Teens with poor sleep habits may have higher blood pressure

In new research, the sleeping habits of teenagers has come under scrutiny and has found that not getting enough sleep may be linked to a rise in their blood pressure.

18 Aug 2008

Summit says organ donors should be reimbursed

At an organ donation summit in Perth this week a scheme to reimburse organ donors has been proposed.

18 Aug 2008

Australians have the right to know if they are eating GM food say chefs

A leading Australian nutritionist and top Australian chefs have joined forces with Greenpeace in demands for the comprehensive labelling and testing of genetically modified (GM) food products.

18 Aug 2008

Symmetry the key to sexual appeal

Scientists say when it comes to searching for a partner, the attraction of a potential mate is all about symmetry.

18 Aug 2008

Beware of finding ADHD everywhere

A group of leading education academics has warned the number of schoolchildren labelled with attention deficit and hyperactivity disorder will increase exponentially if new guidelines are accepted.

18 Aug 2008

Fish melanoma gene linked to pigment pattern that attracts mates

Though skin cancer is deadly to male fish, it also has one perk: The black melanoma splotches arise from attractive natural markings that lure female mates. A new study published in the Proceedings of the National Academy of Sciences this week shows that the melanoma gene can be conserved in swordtail fish because of its beneficial role in sexual selection.

18 Aug 2008

First drug for Huntington's disease approved for use in the U.S.

Huntington's disease is a fatal, inherited neurodegenerative disorder for which there is no cure and usually affects people in their 30s and 40s, but some patients are affected as early as childhood, while others aren't affected until they are older.

18 Aug 2008

Aboriginal children can count without numbers

Knowing the words for numbers is not necessary to be able to count, according to a new study of aboriginal children by UCL (University College London) and the University of Melbourne.

18 Aug 2008

What makes the human body attractive?

A study by Dr William Brown and colleagues in Brunel University's School of Social Sciences and School of Engineering and Design, published this week in the Proceedings of the National Academy of Sciences (PNAS), has revealed an explanation for the correlation between attractiveness and bodily characteristics like height, breast size, long legs, broad shoulders or a curvy figure.

18 Aug 2008

Wake Forest University launches major initiatives in bioethics

Responding to a looming 'bioethics crisis,' Wake Forest University is launching several initiatives in bioethics to address the ethical and social aspects of medical care and technology.

18 Aug 2008

Urologists report success using robot-assisted surgery for urinary abnormality

Ashok Hemal, M.D., a urologic surgeon from Wake Forest University Baptist Medical Center, and colleagues have reported success using robot-assisted laparoscopic surgery to repair abnormal openings between the bladder and vagina known as fistulas. Reporting on their experience with seven patients, Hemal and colleagues have the world's largest known success with the procedure.

18 Aug 2008

Researchers uncover attack mechanism of illness-inducing bacterium found in shellfish

An infectious ocean-dwelling bacterium found in oysters and other shellfish kills its host's cells by causing them to burst, providing the invader with a nutrient-rich meal, researchers at UT Southwestern Medical Center have found.

18 Aug 2008

Study looks at physician perspectives on surrogate decision making

Family members are often called upon to make medical choices for patients who are unable to do so themselves. Researchers led by Alexia Torke, M.D., of the Indiana University School of Medicine and the Regenstrief Institute, Inc., studied how physicians treating these patients interacted with surrogate decision-makers.

18 Aug 2008