Oncology & Cancer

Researchers unlock how progesterone increases breast cancer risk

Researchers have identified how the hormones progesterone and estrogen interact to increase cell growth in normal mammary cells and mammary cancers, a novel finding that may explain why postmenopausal women receiving hormone ...

Oncology & Cancer

How Does Estrogen Feed Breast Cancer Tumors?

(PhysOrg.com) -- A new study is providing insight into how estrogen fuels many breast cancers, and researchers say the findings could lead to new cancer-fighting drugs.

Medical research

Non-hormonal contraceptive a future possibility

(PhysOrg.com) -- Researchers from the University of California, San Francisco and the Center of Advanced European Study and Research in Bonn, Germany published simultaneous papers this week in Nature which could pave the ...

Medical research

Uterine cells produce their own estrogen during pregnancy

For decades, scientists assumed that the ovary alone produced steroid hormones during pregnancy. In a new study in mice, however, researchers demonstrate that once an embryo attaches to the uterine wall, the uterus itself ...

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Progesterone

Progesterone also known as P4 (pregn-4-ene-3,20-dione) is a C-21 steroid hormone involved in the female menstrual cycle, pregnancy (supports gestation) and embryogenesis of humans and other species. Progesterone belongs to a class of hormones called progestogens, and is the major naturally occurring human progestogen.

Progesterone is commonly manufactured from the yam family, Dioscorea. Dioscorea produces large amounts of a steroid called diosgenin, which can be converted into progesterone in the laboratory.

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