Lupeol, a compound in fruits like mangoes, grapes and strawberries, appears to be effective in killing and curbing the spread of cancer cells in the head and neck, a study in the University of Hong Kong has found.

The study, conducted by the university’s Faculty of Medicine, revealed that lupeol, a compound rich in fruits, selectively targeted and killed cancer cells. Using a mouse animal model, lupeol dramatically decreased tumor volume and suppressed local metastasis while bearing minimal effect on surrounding tissue and other vital organs like liver and kidney.

“It can suppress the movement of cancer cells and suppress their growth and it is found to be even more effective than conventional drugs (eg. cisplatin),” said Anthony Yuen, a professor at the University of Hong Kong’s surgery department.
“It’s even more effective if we combine it with chemotherapy drugs, and has very little side effects,” he said.

Interestingly, lupeol was found to be more effective and more potent than conventionally used chemotherapeutic drug, cisplatin, by approximately three-fold in terms of tumor volume and degree of metastasis suppression.

Besides, when lupeol was used in combination with cisplatin, the anti-tumor activity of the chemotherapeutic drug could be enhanced by 40-fold.

The above research result was published in the international scientific journal Cancer Research in September, 2007.

Head and neck cancer includes cancers of the nose, oral cavity, salivary gland, etc. In the year 2004, 2,087 new cases were diagnosed in Hong Kong, with the number of new cases increasing steadily every year.

Human papilloma virus infection, alcohol and tobacco consumption and low fruits and vegetables intake all contribute to the increased risk of head and neck cancer development.

The university was in the hope that the findings will also show people that only a slight change in their everyday meal or a small change in their choice of food intake may have an astounding impact on cancer prevention and therapy.

“Conventional drugs made the mice a lot thinner, but lupeol mice retained their bulk.” Emaciation is usually viewed as a bad sign in the fight against cancer.

Yuen hopes lupeol can be applied to other cancers that are similarly dependent on the NFkB protein to grow and spread.

“It may be possible to use (lupeol) in other cancers because it is able to suppress the NFkB protien, which is activated in many cancers like prostate cancer, breast cancer, liver cancer,” Yuen said.

Death rates from cancer are dropping more quickly across the United States, offering what an expert called a “glimmer of hope” against a leading killer.

According to a new report, cancer death rates fell by 2.1 percent each year from 2002 through 2004, almost double the 1.1 percent annual decline recorded between 1993 and 2003.

Most of the top 15 cancers in both men and women experienced declines in death rates. Notably, men saw declines in death rates for lung, prostate and colorectal cancers, while women saw declines in colorectal and breast cancer. In addition, the increase in death rates from lung cancer among women slowed considerably.

“That’s a very encouraging finding. It’s the key indicator of progress in cancer,” said Dr. David Espey, a cancer epidemiologist from the U.S. Centers for Disease Control and Prevention in Atlanta who was assigned to the Indian Health Service Division of Epidemiology and Disease Control, in Albuquerque, N.M.

The acceleration in decline of cancer deaths is “a good news story,” added Dr. Corey J. Langer, director of thoracic and head and neck medical oncology at Fox Chase Cancer Center in Philadelphia. “It’s the first glimmer of hope in a long time,” he said.

The report, which appears annually, is a joint effort from the American Cancer Society, the U.S. Centers for Disease Control and Prevention, the U.S. National Cancer Institute, and the North American Association of Central Cancer Registries.