Published in Women's Health Weekly, January 25th, 2001
The peptide is called PTH-related peptide (PTHrP).
The process is a vicious cycle, study authors said.
Breast cancer cells and normal cells express calcium receptors. Extracellular calcium stimulates those receptors to secrete PTHrP, which in turn cause cancerous bone tissues to secrete transforming growth factor-beta.
"Secretion of PTHrP from breast cancer cells is thought to...
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