Light directed at a breast tumor through a needle can provide pathologists with biological specifics of the tumor and help oncologists choose treatment options that would be most effective for that individual patient.

p>Westchester, Ill. — A study in the April 1 issue of the journal SLEEP shows that maternal smoking is associated with an impaired infant arousal process that may increase the risk for sudden infant death syndrome (SIDS). The authors suggest that maternal smoking has replaced stomach sleeping as the greatest modifiable risk factor for SIDS.

Amphibian populations are declining worldwide, principally because of the spread of the fungal disease chytridiomycosis. Researchers know that some amphibian populations and species are innately more susceptible to the disease than others. Recent preliminary evidence, described in the April issue of BioScience, suggests also that individual amphibians can sometimes develop resistance to chytridiomycosis, which is caused by the fungus Batrachochytrium dendrobatidis (Bd). Jonathan Q.

St. Louis, MO, April 1, 2009, – Although adolescent and young adult vegetarians may eat a healthier diet, there is some evidence that they may be at increased risk for disordered eating behaviors. In a study published in the April 2009 issue of the Journal of the American Dietetic Association, researchers observed that adolescent and young adult vegetarians may experience the health benefits associated with increased fruit and vegetable intake and young adults my experience the added benefit of decreased risk for overweight and obesity.

BUFFALO, N.Y. -- Several studies have suggested there is a connection between organisms that cause gum disease, known scientifically as periodontal disease, and the development of heart disease, but few studies have tested this theory.

A study conducted at the University at Buffalo, where the gum disease/heart disease connection was uncovered, now has shown that two oral pathogens in the mouth were associated with an increased risk of having a heart attack, but that the total number of germs, regardless of type, was more important to heart health.

p>DALLAS – April 1, 2009 – Researchers at UT Southwestern Medical Center have identified a new biological indicator that may help identify which brain-cancer patients have the most aggressive forms of the disease.

The researchers found that an inflammation-related molecule called RIP1 is commonly found in high levels in glioblastoma, the most common primary malignant brain tumor in adults. The protein RIP1 is a component of the complex NF-kB signaling network – a family of proteins that play a key role in inflammation-induced cancer.

Florence, Italy: Adults who suffer chronic sleep problems may face an increased risk of suicidal behaviour, new research indicates.

In a study to be presented on April 1, 2009 at the World Psychiatric Association international congress "Treatments in Psychiatry," scientists found that the more types of sleep disturbances people had, the more likely they were to have thoughts of killing themselves, engage in planning a suicidal act or make a suicide attempt.

Attaching an antimicrobial drug, which is activated by light, to a peptide that binds to bacteria and stops them making toxins, produced a "magic bullet" that was highly effective at killing the superbug, methicillin-resistant Staphylococcus aureus (MRSA).

Miss Linda Dekker and colleagues from the UCL Eastman Dental Institute, University College London presented the work to the Society for General Microbiology's meeting at Harrogate today (Wednesday 1 April).

Researchers at the University of Westminster have used a simple and convenient method for screening female commercial sex workers (CSW) for sexually transmitted infections (STIs) without the need for them to attend clinics. The women were given tampons that they could use to collect their own samples and post them to the laboratory. The results showed that the women in the study found self-collection of samples very easy and much preferred this method of screening for STIs and in addition the testing methods used proved to be more accurate than traditional tests.

Former patients believe that intensive care unit (ICU) follow-up services are important for their physical, emotional and psychological recovery. Research published in BioMed Central's open access journal Critical Care found that patients valued continuity of care after hospital discharge, information and reassurance from an expert familiar with their experience, and the opportunity to give feedback to ICU staff.

By doing a set of vigorous visual exercises on a computer every day for several months, patients who had gone partially blind as a result of suffering a stroke were able to regain some vision, according to scientists who published their results in the April 1 issue of the Journal of Neuroscience.

Such rigorous visual retraining is not common for people who suffer blindness after a stroke. That's in contrast to other consequences of stroke, such as speech or movement difficulties, where rehabilitation is common and successful.

(New York, NY) – Calling professional medical associations' (PMAs) dependence on funding from pharmaceutical and medical device manufacturers a threat to quality patient care and professional integrity, a group of influential medical leaders today urged these organizations to reduce and eventually eliminate industry contributions.

Science fiction fans still have another two months of waiting for the new Star Trek movie, but fans of actual science can feast their eyes now on the first movie ever of carbon atoms moving along the edge of a graphene crystal. Given that graphene – single-layered sheets of carbon atoms arranged like chicken wire – may hold the key to the future of the electronics industry, the audience for this new science movie might also reach blockbuster proportions.

Here's another reason why dieters should avoid all-you-can-eat buffets: When faced with a large variety of items, consumers tend to underestimate how much of each item is present, according to a new study in the Journal of Consumer Research.

Authors Joseph P. Redden (University of Minnesota) and Stephen J. Hoch (University of Pennsylvania) investigated consumers' perceptions of quantity in a set of experiments that may help us understand how quantity perceptions influence portion sizes.