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Estrogens are a family of related molecules that stimulate the development and maintenance of female characteristics and sexual reproduction.

The natural estrogens produced by women are steroid molecules, which means that they are derived from a particular type of molecular skeleton containing four rings of carbon atoms, giving the shape shown here. The most prevalent forms of human estrogen are estradiol and estrone. Both are produced and secreted by the ovaries, although estrone is also made in the adrenal glands and other organs.
Two new drug compounds appear to be effective in treating endometriosis

Two new drug compounds appear to be effective in treating endometriosis

Two new drug compounds - one of which has already proven useful in a mouse model of multiple sclerosis - appear to be effective in treating endometriosis, a disorder that, like MS, is driven by estrogen and inflammation, scientists report in Science Translational Medicine. [More]
TSRI scientists identify novel synthetic compound that reduces activity of a cancer-related protein

TSRI scientists identify novel synthetic compound that reduces activity of a cancer-related protein

Scientists from the Florida campus of The Scripps Research Institute have identified a novel synthetic compound that sharply inhibits the activity of a protein that plays an important role in in the progression of breast and pancreatic cancers. [More]
Study: Race and ethnicity may affect breast cancer diagnoses, survival

Study: Race and ethnicity may affect breast cancer diagnoses, survival

Among nearly 375,000 U.S. women diagnosed with invasive breast cancer, the likelihood of diagnosis at an early stage, and survival after stage I diagnosis, varied by race and ethnicity, with much of the difference accounted for by biological differences, according to a study in the January 13 issue of JAMA. [More]
New opportunity for developing simple test to measure E2F4 activity in ER+ breast cancer patients

New opportunity for developing simple test to measure E2F4 activity in ER+ breast cancer patients

By looking at the expression levels of downstream genes of the regulators in breast cancer, investigators at Dartmouth Hitchcock's Norris Cotton Cancer Center, led by Chao Cheng, PhD, have identified a gene signature in E2F4 that is predictive of estrogen receptor positive (ER+) breast cancer. [More]
Breast cancer risk for women with atypical hyperplasia greater than previously thought, study finds

Breast cancer risk for women with atypical hyperplasia greater than previously thought, study finds

Women with atypical hyperplasia of the breast have a higher risk of developing breast cancer than previously thought, a Mayo Clinic study has found. Results of the study appear in a special report on breast cancer in the New England Journal of Medicine. [More]
Janssen, Gilead to jointly develop darunavir-based, single-tablet regimen for HIV treatment

Janssen, Gilead to jointly develop darunavir-based, single-tablet regimen for HIV treatment

Janssen R&D Ireland announced today an amendment to its existing agreement with Gilead Sciences, Inc., initially established in 2011, for the development of a once daily, darunavir-based, single-tablet regimen (STR) for the treatment of people living with HIV. [More]
Radiation/chemotherapy increases risk of leukemia in early-stage breast cancer patients

Radiation/chemotherapy increases risk of leukemia in early-stage breast cancer patients

The risk of developing leukemia after radiation therapy or chemotherapy for early stage breast cancer remains very small, but it is twice as high as previously reported, according to results of a new study led by researchers at the Johns Hopkins Kimmel Cancer Center. [More]
UTSA, UTHSCSA researchers to jointly develop next-generation breast cancer treatment drugs

UTSA, UTHSCSA researchers to jointly develop next-generation breast cancer treatment drugs

Stanton McHardy, associate professor of chemistry and director of the Center for Innovative Drug Discovery in The University of Texas at San Antonio College of Sciences, is partnering on a $1.9 million award to develop next-generation breast cancer treatment drugs. [More]
Two orphan receptor proteins exert fatal double whammy effect against glioblastoma cells

Two orphan receptor proteins exert fatal double whammy effect against glioblastoma cells

Two related proteins exert a lethal double whammy effect against glioblastoma cells when activated with a small molecule, say researchers at Georgetown Lombardi Comprehensive Cancer Center. [More]
Research outlines new model for measuring acceptability of contraceptive vaginal ring

Research outlines new model for measuring acceptability of contraceptive vaginal ring

The Population Council published new research in the November issue of the journal Contraception demonstrating that an investigational one-year contraceptive vaginal ring containing Nestorone and ethinyl estradiol was found to be highly acceptable among women enrolled in a Phase 3 clinical trial. [More]
Researchers identify 53 existing drugs that may block Ebola virus from entering human cells

Researchers identify 53 existing drugs that may block Ebola virus from entering human cells

Researchers found 53 existing drugs that may keep the Ebola virus from entering human cells, a key step in the process of infection, according to a study led by researchers at the Icahn School of Medicine at Mount Sinai and the National Institutes of Health, and published today in the Nature Press journal Emerging Microbes and Infections. [More]
Investigational drug increases PFS in patients with advanced breast cancer

Investigational drug increases PFS in patients with advanced breast cancer

In a groundbreaking study that offers new hope for women with advanced breast cancer, researchers from UCLA's Jonsson Comprehensive Cancer Center have published final clinical trial results that showed the amount of time patients were on treatment without their cancer worsening (called progression-free survival) was effectively doubled in women with advanced breast cancer who took the experimental drug palbociclib. [More]
Two-drug combination before surgery benefits women with triple-negative breast cancer

Two-drug combination before surgery benefits women with triple-negative breast cancer

A breast cancer specialist and clinical researcher at Women & Infants Hospital of Rhode Island presented research yesterday at the 2014 San Antonio Breast Cancer Symposium showing that adding either the chemotherapy drug carboplatin or the blood vessel-targeting drug bevacizumab to the standard treatment of chemotherapy before surgery helped women who have the basal-like subtype of triple-negative breast cancer. [More]
Study sheds light on clinical and biological characteristics of male breast cancer

Study sheds light on clinical and biological characteristics of male breast cancer

Results of the EORTC10085/TBCRC/BIG/NABCG International Male Breast Cancer Program conducted in both Europe and in the United States and presented at the 2014 San Antonio Breast Cancer Symposium found significant improvement in survival for men with breast cancer, but this improvement was not as good as that observed for women. [More]
Three studies reveal effects of blocking androgen receptors in breast cancer

Three studies reveal effects of blocking androgen receptors in breast cancer

Three studies presented by University of Colorado Cancer Center researchers at the San Antonio Breast Cancer Symposium 2014 demonstrate the effects of blocking androgen receptors in breast cancer. [More]
Drugs delay disease progression for women with hormone-receptor-positive metastatic breast cancer

Drugs delay disease progression for women with hormone-receptor-positive metastatic breast cancer

A new combination of cancer drugs delayed disease progression for patients with hormone-receptor-positive metastatic breast cancer, according to a multi-center phase II trial. The findings of the randomized study (S6-03) were presented at the 2014 San Antonio Breast Cancer Symposium, held Dec. 6-9, by Kerin Adelson, M.D., assistant professor of medical oncology at Yale Cancer Center and chief quality officer at Smilow Cancer Hospital at Yale-New Haven. [More]
New therapeutic approach for women with estrogen-receptor-positive breast cancer

New therapeutic approach for women with estrogen-receptor-positive breast cancer

Loyola researchers and collaborators have reported promising results from a novel therapeutic approach for women with estrogen-receptor-positive breast cancer. [More]
Male hormone testosterone may increase risk of colon cancer

Male hormone testosterone may increase risk of colon cancer

Previous cancer research has revealed that women are less likely than men to suffer from non-sex specific cancers such as cancer of the colon, pancreas and stomach. Scientists theorized that perhaps this trend was due to a protecting effect created by female hormones, such as estrogen, that help prevent tumors from forming. Now, researchers at the University of Missouri have found evidence suggesting that the male hormone testosterone may actually be a contributing factor in the formation of colon cancer tumors. [More]
Use of HF-WBI for patients with early-stage breast cancer increases 17.4%, study finds

Use of HF-WBI for patients with early-stage breast cancer increases 17.4%, study finds

The use of hypofractionated whole-breast irradiation (HF-WBI) for patients with early-stage breast cancer increased 17.4 percent from 2004 to 2011, and patients are more likely to receive HF-WBI compared to conventionally fractionated whole-breast irradiation (CF-WBI) when they are treated at an academic center or live ≥50 miles away from a cancer center, according to a study published in the December 1, 2014 issue of the International Journal of Radiation Oncology • Biology • Physics (Red Journal), the official scientific journal of the American Society for Radiation Oncology. [More]
Heat-shock protein 90 enables ER+ breast cancers to develop resistance to hormonal therapy

Heat-shock protein 90 enables ER+ breast cancers to develop resistance to hormonal therapy

Long known for its ability to help organisms successfully adapt to environmentally stressful conditions, the highly conserved molecular chaperone heat-shock protein 90 (HSP90) also enables estrogen receptor-positive (ER+) breast cancers to develop resistance to hormonal therapy. [More]