Hormone replacement therapies can up the risk of breast cancer in women

A recent study has cautioned that women who take hormone replacement therapy have higher chances of developing breast cancer
hormone replacement therapy
Written by: India TV Lifestyle Desk New Delhi July 13, 2017 18:26 IST

Women who take hormone replacement therapy to reduce the effects of menopausal symptoms need to be careful. A recent study has cautioned that women who take hormone replacement therapy have higher chances of developing breast cancer. The therapies that boost female hormones can cause specialised cancer cells to bring about growth and also cause it to spread to other parts of the body. A woman’s exposure to natural and synthetic progestins, medications that have similar effects like progesterone, can cause production of cancer cells in body that act like stem cells in humans. 

"The findings show that exposure to natural and synthetic progestins leads to the development of these cancer stem-cell like cells," said Salman Hyder, the Zalk Endowed Professor at the University of Missouri in the US. 

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Both natural and synthetic progestins significantly increased protein expression of CD44 -- a molecule involved in cell proliferation, cell communication and migration.Additionally, the presence of progestins caused these components to behave like cancer stem cell-like cells.

These rare cells are a small population of cells that -- acting like normal stem cells -- are self-renewing, create identical copies of themselves and proliferate exponentially. Further testing showed that the rare subset of cancer cells actually were enriched by progestins, the researchers said in the paper published in the journal Breast Cancer - Targets and Therapy.

"These cells greatly increase the likelihood of resistance to therapies and the risk for metastasis. Our findings also suggest that clinicians may be able to combat the progestin-dependent tumour growth through immunotherapy," Hyder said.

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The results could enable scientists to target these rare cells that flourish in breast cancers and metastasise elsewhere. This can help doctors to recognize immunotherapies to fight the spread of cancer. 

(With IANS Inputs) 

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