Hormones News and Research

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Why estrogenic hormones produce unintended results in women

New research is shedding light on why estrogenic hormones produce unintended results in women, giving hope to the idea that new drugs might reach their targets and work more effectively. Ultimately it could mean that postmenopausal women would know that hormone-replacement therapy would have only its intended result.

13 Feb 2005

Sudden emotional stress can result in severe but reversible heart muscle weakness

Shocking news, such as learning of the unexpected death of a loved one, has been known to cause catastrophic events, such as a heart attack.

10 Feb 2005

Sex hormone progesterone metabolite allopregnanolone reduces stress

A steroid hormone released during the metabolism of progesterone, the female sex hormone, reduces the brain's response to stress, according to research in rats by scientists at Emory University School of Medicine, the Yerkes National Primate Research Center and Atlanta's Center for Behavioral Neuroscience.

9 Feb 2005

What causes puberty to begin?

Puberty, that awkward phase when boys and girls are primed for their sexual reproductive years as men and women, appears to be triggered by the brain's own version of "It takes two to tango," whereby a signal literally gets turned on by a molecule that is produced by a gene aptly named KiSS-1.

31 Jan 2005

Bioartificial kidney containing billions of donor kidney cells under study at the Medical College of Georgia

Whether a bioartificial kidney containing billions of donor kidney cells will help intensive care patients with kidney failure survive is under study at the Medical College of Georgia.

31 Jan 2005

Relationship between weight gain and breast cancer survival

Women who are overweight prior to breast cancer diagnosis, or who are lean but gain weight following diagnosis, are more likely to have their disease return or die of the disease, a new study shows. This effect was found to be particularly pronounced among women who had never smoked. The study is published online in the Journal of Clinical Oncology (JCO).

31 Jan 2005

Scientists have coaxed human embryonic stem cells to become spinal motor neurons

After years of trial and error, scientists have coaxed human embryonic stem cells to become spinal motor neurons, critical nervous system pathways that relay messages from the brain to the rest of the body.

30 Jan 2005

New report on the health effects of perchlorate, found in many public drinking-water supplies

A new report by the National Academies' National Research Council on the health effects of perchlorate, a chemical that in high doses can decrease thyroid function in humans and that is present in many public drinking-water supplies

26 Jan 2005

Why some men develop aggressive prostate cancer that becomes resistant to hormone-withdrawal therapy

Researchers found that certain mutations in a protein called the androgen receptor cause advanced and invasive prostate cancer when put into otherwise healthy mice. The androgen receptor's normal function is to control growth of the prostate gland in response to cues from male hormones called androgens, which have long been thought to stimulate prostate tumors.

26 Jan 2005

Plant protein mimics hormone that mitigates diabetes and obesity

A common protein that protects plants from fungal infection mimics the activity of a hormone in mammals that is linked to weight loss and is believed to play a role in mitigating heart disease, obesity and diabetes, according to a team of researchers at Purdue University and several collaborating institutions.

25 Jan 2005

Use of anti-inflammatory steroids for traumatic head injuries may actually increase the risk of death

The common use of anti-inflammatory steroids for traumatic head injuries like those from car crashes may actually increase the risk of death, according to a new review of studies about the treatment.

24 Jan 2005

Over-eating at an early age may stay well into adulthood

Melbourne researchers have found that over-eating at a very young age can have a long-lasting effect on the body and in particular seems to enhance the production of hormones made in fat and involved in metabolism.

24 Jan 2005

Obesity is linked to lower levels of prostate specific antigen (PSA) in men

A study reported in the current issue of Cancer, the journal of the American Cancer Society, shows that obesity is linked to lower levels of prostate specific antigen (PSA) in men, making early detection tests unreliable.

24 Jan 2005

New ideas for creating a new generation of oral medications to treat infertility

Researchers now have a much better picture of how follicle-stimulating hormone (FSH), one of the most frequently used fertility drugs, works, and with it new ideas for creating a new generation of oral medications to treat infertility.

20 Jan 2005

Older mothers more affectionate to their infants

Mothers who are more mature tend to display more affection towards their infants whereas teenage mothers often focus on instrumental behaviour – fixing their infant’s clothes or their soother – finds a new study of maternal behaviour.

18 Jan 2005

Sex hormones modulate brain damage in multiple sclerosis

Abnormalities in sex hormone levels may contribute to the damage to brain tissue typical of multiple sclerosis, indicates research in the Journal of Neurology Neurosurgery and Psychiatry.

16 Jan 2005

Researchers shed new light on the development of cancers, particularly breast and prostate cancer

Researchers at Brown Medical School and Rhode Island Hospital have shed new light on the activation of a protein key to the development of cancers, particularly breast and prostate cancer, the most commonly diagnosed cancers in the United States.

13 Jan 2005

Polycystic ovary syndrome (PCOS), the most common endocrine disorder among reproductive-age women

The polycystic ovary syndrome (PCOS), the most common endocrine disorder among reproductive-age women, produces a wide variety of body changes with both physical and emotional implications for sufferers.

3 Jan 2005

Link between body-mass index and oral-contraceptive failure

Overweight and obese women who take oral contraceptives are 60 percent to 70 percent more likely to get pregnant while on the birth-control pill, respectively, than women of lower weight, according to new findings from Fred Hutchinson Cancer Research Center that will be published in the January issue of Obstetrics & Gynecology.

30 Dec 2004

Research animals experience severe stress response at slightest contact with researchers

Mice, rabbits, rats, beagles, geese, and other animals all show measurable physiological stress responses to routine laboratory procedures that have been up until now viewed as relatively benign.

28 Dec 2004

Hormones News and Research

Why estrogenic hormones produce unintended results in women

Sudden emotional stress can result in severe but reversible heart muscle weakness

Sex hormone progesterone metabolite allopregnanolone reduces stress

What causes puberty to begin?

Bioartificial kidney containing billions of donor kidney cells under study at the Medical College of Georgia

Relationship between weight gain and breast cancer survival

Scientists have coaxed human embryonic stem cells to become spinal motor neurons

New report on the health effects of perchlorate, found in many public drinking-water supplies

Why some men develop aggressive prostate cancer that becomes resistant to hormone-withdrawal therapy

Plant protein mimics hormone that mitigates diabetes and obesity

Use of anti-inflammatory steroids for traumatic head injuries may actually increase the risk of death

Over-eating at an early age may stay well into adulthood

Obesity is linked to lower levels of prostate specific antigen (PSA) in men

New ideas for creating a new generation of oral medications to treat infertility

Older mothers more affectionate to their infants

Sex hormones modulate brain damage in multiple sclerosis

Researchers shed new light on the development of cancers, particularly breast and prostate cancer

Polycystic ovary syndrome (PCOS), the most common endocrine disorder among reproductive-age women

Link between body-mass index and oral-contraceptive failure

Research animals experience severe stress response at slightest contact with researchers

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