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.

Thyroid surgery outcomes may be worse in pregnant women

Pregnant women appear to have worse clinical and economic outcomes after thyroid and parathyroid surgery compared with women who are not pregnant, according to a report in the May issue of Archives of Surgery.

18 May 2009

Two new genes decide when a girl starts menstruation

An international team of researchers have identified two genes that are involved in determining when girls begin menstruation.

18 May 2009

Could sleep be a critical component to maintaining a healthy body weight?

Could sleep be a critical component to maintaining a healthy body weight? According to new research to be presented on Sunday, May 17, at the American Thoracic Society's 105th International Conference in San Diego, body mass index (BMI) is linked to length and quality of sleep in a surprisingly consistent fashion.

17 May 2009

Determining success or failure in cholesterol-controlling drugs

Researchers at the University of California, San Diego have discovered that a complex network of interactions between drugs and the proteins with which they bind can explain adverse drug effects. Their findings suggest that adverse drug effects might be minimized by using single or multiple drug therapies in order to fine-tune multiple off-target interactions.

15 May 2009

Old diabetes drug Metformin teaches experts new tricks

Research from the Johns Hopkins Children's Center reveals that the drug most commonly used in type 2 diabetics who don't need insulin works on a much more basic level than once thought, treating persistently elevated blood sugar - the hallmark of type 2 diabetes - by regulating the genes that control its production.

15 May 2009

Endorphins, personality, and inheritance

A new article published in Elsevier's journal Bioscience Hypotheses suggests that our feelings in our lifetime can affect our children.

14 May 2009

Discovery of two proteins essential for ovulation

Researchers from the National Institutes of Health and other institutions have identified in mice two proteins essential for ovulation to take place.

14 May 2009

New device could track tumor's growth

Surgical removal of a tissue sample is now the standard for diagnosing cancer. Such procedures, known as biopsies, are accurate but only offer a snapshot of the tumor at a single moment in time.

13 May 2009

High levels of estradiol hormone in men with heart failure linked to increased risk of death

Men with systolic chronic heart failure who have low or high levels of estradiol, a form of the hormone estrogen, have an increased risk of death compared with men with moderate levels of this hormone, according to a study in the May 13 issue of JAMA, the Journal of the American Medical Association.

12 May 2009

DHEA supplement combined with vitamin D and calcium significantly improves spinal bone density in older women

"The results of our study are very promising. Similar studies have demonstrated much smaller benefits for bone than we found. However, calcium and vitamin D deficiencies, which are present in half of older adults, may have prevented DHEA from improving bone density in the earlier studies," said Edward Weiss, Ph.D., associate professor of nutrition and dietetics at Saint Louis University's Doisy College of Health Sciences and lead author of the study.

12 May 2009

Discovery of eight previously unknown genes that affect blood pressure

Eight previously unknown genes that affect blood pressure were recently identified in a comprehensive international study comprising 34,433 Europeans. The findings of the study, in which Uppsala University researchers participated, are being presented in the Web edition of Nature Genetics.

11 May 2009

Discovery of major new treatment target in diseased arteries

Removing a single protein prevents early damage in blood vessels from triggering a later-stage, frequently lethal complication of atherosclerosis, according to research published online today in the journal Nature Medicine. By eliminating the gene for a signaling protein called cyclophilin A (CypA) from a strain of mice, researchers were able to provide complete protection against abdominal aortic aneurysm (AAA).

11 May 2009

FDA approves Samsca tablets (tolvaptan) to treat hyponatremia

The U.S. Food and Drug Administration has approved Samsca tablets (tolvaptan) to treat hyponatremia, an abnormally low concentration of sodium in the blood.

8 May 2009

Kidney disease patients reap rewards of prevention

Making sure you see your doctor and have tests run on a regular basis can prevent serious complications of chronic kidney disease (CKD), according to a study appearing in an upcoming issue of the Journal of the American Society Nephrology (JASN).

7 May 2009

Loss of stromal protein major new prognostic factor in patients with breast cancer

Reporting online in the American Journal of Pathology, researchers from the Kimmel Cancer Center at Jefferson have implicated the loss of a stromal protein called caveolin-1 as a major new prognostic factor in patients with breast cancer, predicting early disease recurrence, metastasis and breast cancer patient survival.

6 May 2009

Teenage girl who wants to be a boy wins right to have breasts removed

Reports than a teenage Australian girl has won the right in court to have both breasts surgically removed, have made the headlines around the world and evoked some very strong criticism.

6 May 2009

Mushrooms may boost the body's natural immune system

The potential for mushrooms to fight influenza is being examined following United States research suggesting the body's natural immune response against viral infections and tumours is boosted through the consumption of white button mushrooms.

6 May 2009

Estrogen plays a key role in how the brain processes sounds

The findings, published in today's issue of The Journal of Neuroscience, show for the first time that a sex hormone can directly affect auditory function, and point toward the possibility that estrogen controls other types of sensory processing as well.

5 May 2009

Protein effects of hormone replacement therapy uncovered

An in-depth proteomic analysis of the sera of 50 participants from the Women's Health Initiative (WHI) hormone replacement therapy trial provides some explanations for the trial's clinical results.

30 Apr 2009