Hormone News and Research

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A hormone is a chemical released by one or more cells that affects cells in other parts of the organism. Only a small amount of hormone is required to alter cell metabolism. It is essentially a chemical messenger that transports a signal from one cell to another.

How to handle the menopause - eat less, get more active and wear HRT skin patches

The latest advice to women going through the menopause is eat less, get more active and consider wearing hormone replacement therapy (HRT) skin patches.

25 Nov 2008

Weight gain during menopause

Weight and appetite experts from around the world met at a conference in Bangkok earlier this year to discuss sex differences in obesity.

24 Nov 2008

Pregnancy and fertility following bariatric surgery

Women who undergo weight-loss surgery, known as bariatric surgery, and later become pregnant after losing weight may be at lower risk for pregnancy-related diabetes and high blood pressure-- complications that can seriously affect the mother or her baby--than pregnant women who are obese, according to new findings from the Agency for Healthcare Research and Quality that are published in the November 19 issue of JAMA, the Journal of the American Medical Association.

24 Nov 2008

IGF-1 not beneficial for amyotrophic lateral sclerosis

A growth hormone that had shown some promise for treating people with amyotrophic lateral sclerosis (ALS) showed no benefit in a new study published in the November 25, 2008, issue of Neurology , the medical journal of the American Academy of Neurology.

24 Nov 2008

Ultrasound helps provide rapid treatment of DVT

Scientists in the United States have discovered that ultrasound waves help dissolve blood clots in deep vein thrombosis (DVT) faster than clot-busting drugs.

24 Nov 2008

Does hormone treatment predispose patients to breast cancer?

Breast cancer, the leading cause of death among women in France, is the most commonly occurring cancer in women.

21 Nov 2008

New insight into the events that prime the uterine muscles for contraction

During pregnancy, the muscles of the uterus are relatively inactive.

20 Nov 2008

Helping diabetics through the holiday season

November ushers in American Diabetes Month - not only a time to be thankful for bustling basic and clinical research underway on the disease, but also the unofficial start of the holiday season.

20 Nov 2008

Researchers reveal a new aspect of tumor development

The DNA in our cells is constantly under assault from oxygen, the sun's radiation and environmental stresses.

20 Nov 2008

New insight into the response of human skin to radiation

Scientists have new insight into the response of human skin to radiation and what drives the most aggressive and deadly form of skin cancer.

20 Nov 2008

Study identifies causes of bone loss in breast cancer survivors

Osteoporosis is a growing concern among breast cancer survivors and their doctors, because certain cancer drugs can cause bone loss.

19 Nov 2008

Pregnancy and fertility following bariatric surgery

Women who undergo weight-loss surgery, known as bariatric surgery, and later become pregnant after losing weight may be at lower risk for pregnancy-related diabetes and high blood pressure - complications that can seriously affect the mother or her baby - than pregnant women who are obese, according to new findings from the Agency for Healthcare Research and Quality that are published in the November 19 issue of JAMA.

19 Nov 2008

More data released on key diabetes genes

One of the most reliable indicators to predict that a person will develop type 2 diabetes is the presence of insulin resistance.

19 Nov 2008

Reduced-calories and exercise can modify a postmenopausal woman's risk of breast cancer

Scientists at the University of Texas at Austin have identified pathways by which a reduced-calorie diet and exercise can modify a postmenopausal woman's risk of breast cancer.

18 Nov 2008

Many sleepless children become overweight

Between the ages of six months and six years old, close to 90 percent of children have at least one sleep-related problem.

18 Nov 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

Exercise can lower a woman's overall risk of cancer

Exercise is good for more than just your waistline. A recent study presented at the American Association for Cancer Research's Seventh Annual International Conference on Frontiers in Cancer Prevention Research suggests that regular physical activity can lower a woman's overall risk of cancer - but only if she gets a good night's sleep. Otherwise, lack of sleep can undermine exercise's cancer prevention benefits.

17 Nov 2008

Glucocorticoids may cause damage in the brain

A class of drugs that are used in premature infants to treat chronic lung damage can cause damage in the brain.

17 Nov 2008

Study looks at investigational compound MK-677 in Alzheimer's disease

A new study shows that a drug that increases the release of growth hormone failed to slow the rate of progression of Alzheimer's disease in humans.

17 Nov 2008

Link between prostate inflammation and lower urinary tract symptoms

In the December issue of European Urology ( http://www.elsevier.com/locate/eururo ) Dr. Curtis Nickel and associates report on the evidence of a relationship between prostate inflammation and lower urinary tract symptoms (LUTS) in men enrolled in the REDUCE trial.

16 Nov 2008