Washington, April 1: Scientists at Wake Forest University School of Medicine have reached a step closer to developing a new drug to inhibit tumour growth in cancer patients, and potentially help in the healing of wounds.

The researchers looked at angiogenesis - the body''s formation of new blood vessels from existing blood vessels - and how some blood proteins are involved in that process and affect blood vessel growth during a study.

They found that a protein called ferritin binds to and cripples the ability of another blood protein, called HKa, to shut down blood vessel growth.

The researcher point out that new blood vessels supply a steady stream of nutrients and oxygen, which are essential for tumour growth.

Washington, April 1 : Scientists at the University at Buffalo have found that the risk of heart attack increases with an increase in bacteria in the mouth.

The researchers have revealed that they observed this trend while studying the relationship between periodontal disease and the development of heart disease.

While a number of studies have suggested a connection between organisms that cause periodontal disease and the development of heart disease, very few have tested this theory.

London, Apr 1 : By stopping the face from frowning, Botox jabs, which smooth out facial lines by partially freezing muscles, make patients feel happier, a new study suggests.

The treatment has been used by many celebrities including Queen of Pop.

Now, after studying 25 people, psychologists have found that Botox anti-wrinkle treatment can help beat the blues.

In the volunteer group, 12 had Botox injections to the forehead, while the rest had fillers, peals or cosmetic treatments.

All the participants completed a mood questionnaire at least two weeks later, reports The Telegraph.

Melbourne, Apr 1 : Watching your team lose can be more than heart breaking, it can be fatal, especially for die-hard fans, warns a new study.

"The emotional stress of loss and/or the intensity of a game played in a high profile rivalry such as the Super Bowl can trigger total and cardiovascular deaths," ABC Online quoted Dr Robert Kloner, a professor of medicine at the University of Southern California, as saying.

"In contrast, a win in a lower intensity game may actually have a favourable effect on mortality,” he added.

Washington, Apr 1 : Adults who suffer chronic sleep problems are more likely to show suicidal tendencies than those without any insomnia complaints, a new study has found.

In the study, researchers 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.

Washington, Apr 1 : A potential new HIV drug may one day treat patients who are not responding to Anti-Retroviral Therapy, suggests a new study.

Researchers, from Imperial College London, the National Cancer Institute, Bethesda, and Innsbruck Medical University, said when they used a molecule called D-1mT alongside Anti-Retroviral Therapy (ART) to treat monkeys they were able to reduce the levels of the simian form of HIV, known as SIV, in the blood.