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Eating peaches may slow breast cancer growth and spread

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PTI: Peaches have compounds that could be a novel addition to therapies that reduce the risk of metastasis, the primary killer in breast and other cancers.

Compounds in peaches can inhibit the growth of breast cancer cells and their ability to spread, scientists have found.

Researchers from Washington State University and Texas A&M said the compounds could be a novel addition to therapies that reduce the risk of metastasis, the primary killer in breast and many other cancers.

The compounds could be given as an extract or, judging from the doses given to mice in the study, two to three peaches a day.

“I would do three peaches a day,” said Giuliana Noratto, WSU assistant professor of food science.

The study also underscores the value of good nutrition in preventing cancer, she said.

“Having enough fruits and vegetables that can provide these compounds in our diet, we might have a similar preventive effect,” said Noratto.

In 2009, Noratto and her colleagues at Texas A&M published a study showing that peach and plum extracts suppressed breast cancer cells cultured in petri dishes.

For the new study, the researchers implanted breast cancers cells beneath the skin of mice. The technique, called a xenograft, is often used to look at the growth of breast cancer cells in a living animal, mimicking the interactions by which tumours form and progress.

After giving the cells a week to establish, the researchers fed the mice varying doses of peach polyphenols, compounds that help plants ward off the damaging effects of the sun’s ultraviolet radiation.

“There are several studies showing that these compounds act as antioxidants and can therefore protect DNA against damage that can produce cancer,” said Noratto.

Other researchers have seen the phenomenon, Noratto said, but she and her colleagues wanted to know if the compounds might start a cascade of signals that could induce the cancer cells to commit suicide.

“We didn’t even think about metastasis at that time. The surprise was we analysed lungs and beside the fact that the peach compounds inhibited the growth of the tumour, they also inhibited the metastasis levels on the lungs,” Noratto said.

Moreover, after 12 days the researchers saw that mice fed with high levels of polyphenols had tumours that grew less and without much of the blood vessel formation that can help cancer cells spread to other parts of the body.

The tumours in those mice also had less evidence of enzymes involved in the spread and invasion of cancer.

The doses given to mice, if scaled up to a 60-kg person, could be supplied by two to three peaches a day or a dietary supplement of peach polyphenol extract powder.

The study was published in the Journal of Nutritional Biochemistry.

( Courtesy: Indian Express )




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