Progesterone News and Research

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Possible new treatments options for triple-negative breast cancer

Brian Rowan, Ph.D., professor of Cancer Research for the Tulane Cancer Center, is studying treatment options for an aggressive type of breast cancer that is prevalent in New Orleans among African-American women - triple-negative breast cancer.

5 Apr 2009

Biopsy of recurrent breast cancer can alter treatment

For women with recurrent breast cancer, the treatment the doctor chooses is usually based on the properties of their original breast cancer.

20 Mar 2009

New genomic test can personalize breast cancer treatment

A set of 50 genes can be used to reliably identify the four known types of breast cancer, according to research conducted at Washington University School of Medicine in St. Louis and collaborating institutions.

9 Feb 2009

Study identifies potential 'safe period' for hormone replacement use

A new study makes important new findings on the role of hormone use on the risk of breast cancer, confirming that the use of estrogen plus progesterone increases the risk of both ductal and lobular breast cancer far more than estrogen-only; suggesting a two-year 'safe' period for the use of estrogen and progesterone; and finding that the increased risk for ductal cancers observed in long-term past users of hormone replacement therapy drops off substantially two years after hormone use is stopped.

2 Feb 2009

Researchers identify risk factors for breast cancer in the opposite breast

A preventive procedure to remove the unaffected breast in breast cancer patients with disease in one breast may only be necessary in patients who have high-risk features as assessed by examining the patient's medical history and pathology of the breast cancer, according to researchers at The University of Texas M. D. Anderson Cancer Center.

27 Jan 2009

Exercise after menopause lowers breast cancer risk

Several studies had previously suggested that regular physical exercise reduces the breast cancer risk of women.

19 Jan 2009

Oral contraceptives may be safe, but information gaps remain

Introduced in the 1960s, oral contraceptives have been used by about 80 percent of women in the United States at some point in their lives.

15 Jan 2009

Postpartum depression can lead to poor sleep quality

A study published in the current issue of the Journal of Obstetric, Gynecologic, & Neonatal Nursing shows that depression symptoms worsen in PPD patients when their quality of sleep declines.

10 Dec 2008

Migraines linked to lower risk of breast cancer

Women who suffer from migraines may take at least some comfort in a recent, first-of-its-kind study that suggests a history of such headaches is associated with a significantly lower risk of breast cancer. Christopher I. Li, M.D., Ph.D., and colleagues at Fred Hutchinson Cancer Research Center report these findings in the November issue of Cancer Epidemiology, Biomarkers and Prevention.

7 Dec 2008

Breakthrough reveals first ever complete structure of a nuclear hormone receptor on human DNA

For decades, scientists have been studying nuclear hormone receptors to gain a better understanding of how they turn genes on and off throughout the body and how they function as key drug targets for a number of diseases, such as diabetes, breast cancer, osteoporosis and high cholesterol. A new UVA Health System study, led by Fraydoon Rastinejad, Ph.D., professor of pharmacology and director of the UVA Center for Molecular Design and published in the October 29 issue of Nature, reveals the first ever complete structure of a nuclear hormone receptor on human DNA – a discovery that now clears a new path for scientists to design more effective drugs with fewer associated health risks. “Dr. Rastinejad’s findings fundamentally change the way people all over the world will study how nuclear hormone receptors work and introduces a new platform for designing better drugs,” says Jim Garrison, Ph.D., professor of pharmacology at UVA Health System. Nuclear hormone receptors, including the peroxisome proliferator-activated receptors (PPARs), are proteins that sit on the surface of cells and bind to specific hormones such as estrogen, progesterone and thyroid hormone. Once the receptor binds to its hormone and its DNA regulatory element, it can cause a number of alterations in the cell, switching genes on and off. These switches control the continual regulation of the metabolic system and reproductive tissues, as well as the development and differentiation of skin, bone and behavioral centers in the brain. “PPARs are widely studied because they regulate the genes that produce fat cells, glucose, insulin, lipids and metabolism,” says Dr. Rastinejad. “That’s what makes them such good drug targets for diseases like diabetes. We can design drugs more rationally to bind to the PPAR nuclear receptor complex to help regulate these functions in the body.” A number of diabetes drugs, called insulin sensitizers, have been developed based on that knowledge, but now that scientists have a clear view into how these receptors bind and what shape they take the door is wide open for the development of better drugs. "After 40 years of nuclear receptor research, we finally can view the first full and complete structure of a nuclear receptor, thanks to Dr. Rastinejad’s break-though achievement,” says Bert W. O’Malley, Ph.D., professor and chairman, Department of Molecular and Cellular Biology at Baylor College of Medicine who is widely considered a top expert in the field.

17 Nov 2008

CutisPharma issued patent for suppository compounding

CutisPharma, Inc. has announced that it has received approval from the United States Patent and Trademark Office for its patent (US 7,434,690) regarding a container and kit for the preparation, storage and dispensing of compounded suppositories.

7 Nov 2008

Migraines associated with lower risk of breast cancer

6 Nov 2008

Caffeine not associated with overall breast cancer risk

Caffeine consumption does not appear to be associated with overall breast cancer risk, according to a report in the October 13 issue of Archives of Internal Medicine, one of the JAMA/Archives journals. However, there is a possibility of increased risk for women with benign breast disease or for tumors that are hormone-receptor negative or larger than 2 centimeters.

14 Oct 2008

Danish study provides new information on hormone replacement therapy and the risk of heart attacks

It's not what you take but the way that you take it that can produce different results in women who take hormone replacement therapy (HRT), according to new research on the association between HRT and heart attacks, published online in Europe's leading cardiology journal, the European Heart Journal today.

30 Sep 2008

Breastfeeding, other factors may affect risk of breast cancer type

Factors such as age at menopause as well as a woman's breastfeeding practices can influence her risk of developing certain types of breast cancer. That was the conclusion of a new study published in the October 1, 2008 issue of CANCER, a peer-reviewed journal of the American Cancer Society. The study's results suggest that there are distinct and separate hormonal risk factors associated with different subtypes of breast cancer.

25 Aug 2008

Chronic exposure to estrogen impairs some cognitive functions

University of Illinois researchers report this week that chronic exposure to estradiol, the main estrogen in the body, diminishes some cognitive functions. Rats exposed to a steady dose of estradiol were impaired on tasks involving working memory and response inhibition, the researchers found.

3 Aug 2008

Mechanism for postpartum depression found in the brains of mice

Researchers have pinpointed a mechanism in the brains of mice that could explain why some human mothers become depressed following childbirth. The discovery could lead to improved treatment for postpartum depression.

31 Jul 2008

Pregnant mums on a high fat diet put daughters at risk later in life

According to new research mothers who eat a high fat diet while pregnant increase their daughters risk of obesity and breast cancer.

17 Jun 2008

Prenatal nutrition and nutrition during childhood interact to alter puberty

A high-fat diet during pregnancy and nursing may lead to the child having an early onset of puberty and subsequent adulthood obesity, according to a new animal study. The results were presented Monday, June 16, at The Endocrine Society's 90th Annual Meeting in San Francisco.

16 Jun 2008

How advanced prostate cancer becomes resistant to androgen-deprivation therapy

For the past 70 years the treatment of choice for advanced, metastatic prostate cancer has been androgen-deprivation therapy. That is, the suppression of circulating testosterone - the hormone that fuels prostate-cancer growth - via surgical castration (orchiectomy) or medical castration with testosterone-blocking drugs. While such therapy buys time for patients, it is not a cure, as inevitably the cancer becomes resistant to the androgen deprivation and continues to grow.

2 Jun 2008