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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.
Genetic test may be able to predict need for chemotherapy in early-stage breast cancer

Genetic test may be able to predict need for chemotherapy in early-stage breast cancer

Patients with early stage breast cancer who have a low genetic risk of disease recurrence may not need to have chemotherapy, report researchers. [More]
New research discovers how opposite-sex hormonal therapy influences the brain

New research discovers how opposite-sex hormonal therapy influences the brain

Women and men often show marked differences as regards mental illnesses. In order to learn more about this phenomenon, a project supported by the Austrian Science Fund FWF explored how opposite-sex hormonal therapy applied to transgender individuals influences the brain. [More]
AgriLife scientists examine role of ghrelin receptor in age-related adipose tissue inflammation in mice

AgriLife scientists examine role of ghrelin receptor in age-related adipose tissue inflammation in mice

Scientists have proposed that inflammation is the harbinger of aging and central to the aging process, a phenomenon described as 'inflamm-aging,' said Dr. Yuxiang Sun. [More]
Melatonin appears to suppress growth of breast cancer stem cells

Melatonin appears to suppress growth of breast cancer stem cells

Melatonin, a hormone produced in the human brain, appears to suppress the growth of breast cancer tumors. [More]
Scientists discover less invasive, cheaper technique to improve woman's chances of becoming pregnant

Scientists discover less invasive, cheaper technique to improve woman's chances of becoming pregnant

For those facing infertility, IVF has long been the established option to have a baby. Now Australian and Belgian medical scientists have discovered how to improve a woman's chances of becoming pregnant using a less invasive and cheaper alternative. [More]
Researchers discover new role of cellular signaling molecule involved in release of hunger hormone

Researchers discover new role of cellular signaling molecule involved in release of hunger hormone

Researchers at UT Southwestern Medical Center have identified a previously unknown role of a cellular signaling molecule involved in release of the "hunger hormone" ghrelin, a finding that could have implications for optimal treatment of children taking beta blockers. [More]
Neuroscientists demonstrate revolutionary new way of mapping the brain at single-neuron resolution

Neuroscientists demonstrate revolutionary new way of mapping the brain at single-neuron resolution

Neuroscientists today publish in Neuron details of a revolutionary new way of mapping the brain at the resolution of individual neurons, which they have successfully demonstrated in the mouse brain. [More]
Cells may need some reactive forms of oxygen to maintain health

Cells may need some reactive forms of oxygen to maintain health

Within our bodies, high levels of reactive forms of oxygen can damage proteins and contribute to diabetic complications and many other diseases. [More]
Novel nanoscale display case could help reveal structure of hard-to-study molecules

Novel nanoscale display case could help reveal structure of hard-to-study molecules

Researchers at the Department of Energy's Lawrence Berkeley National Laboratory and UC Berkeley have created a sort of nanoscale display case that enables new atomic-scale views of hard-to-study chemical and biological samples. [More]
New ATA recommendations offer guidance for managing all forms of thyrotoxicosis

New ATA recommendations offer guidance for managing all forms of thyrotoxicosis

New evidence-based recommendations from the American Thyroid Association provide guidance to clinicians in the management of patients with all forms of thyrotoxicosis (excessively high thyroid hormone activity), including hyperthyroidism. [More]
Glia cells may play role in regulating sugar intake into the brain, experts report

Glia cells may play role in regulating sugar intake into the brain, experts report

Researchers at Technical University of Munich discovered that our brain actively takes sugar from the blood. Prior to this, researchers around the world had assumed that this was a purely passive process. [More]
Maternal GDM linked to increased risk of childhood obesity among children aged 9-11 years

Maternal GDM linked to increased risk of childhood obesity among children aged 9-11 years

New research published in Diabetologia shows an increased risk of childhood obesity at age 9-11 years when the mother has had gestational diabetes during pregnancy. [More]
Drug approved for treatment of vulvovaginal atrophy shows no added benefit in post-menopausal women

Drug approved for treatment of vulvovaginal atrophy shows no added benefit in post-menopausal women

Ospemifene (tradename: Senshio) is approved for the treatment of moderate to severe symptomatic vulvovaginal atrophy (VVA) in post-menopausal women who are not candidates for local vaginal oestrogen therapy. [More]
Industrial chemicals exceed safety levels in public drinking water supplies for 6 million Americans

Industrial chemicals exceed safety levels in public drinking water supplies for 6 million Americans

Levels of a widely used class of industrial chemicals linked with cancer and other health problems--polyfluoroalkyl and perfluoroalkyl substances (PFASs)--exceed federally recommended safety levels in public drinking water supplies for six million people in the U.S., according to a new study led by researchers from Harvard T.H. Chan School of Public Health and the Harvard John A. Paulson School of Engineering and Applied Sciences. [More]
Study reveals needle biopsy hormone receptor testing for DCIS wastes millions

Study reveals needle biopsy hormone receptor testing for DCIS wastes millions

For patients with the most common type of noninvasive breast cancer, routine testing for estrogen and progesterone receptors in tissue taken at the first "needle" biopsy is both unnecessary and wasteful, according to results of a study led by Johns Hopkins pathologists. [More]
IMS provides global recommendations for care of women at menopause

IMS provides global recommendations for care of women at menopause

The International Menopause Society has brought together 7 international Societies to provide harmonised, global recommendations for the care of women at menopause [More]
African-American men treated with ADT for prostate cancer suffer from high mortality rates

African-American men treated with ADT for prostate cancer suffer from high mortality rates

In a retrospective study analyzing patients' medical records, researchers at Brigham and Women's Hospital found that patients' race significantly affected their longevity by increasing the likelihood of death after receiving androgen deprivation therapy (ADT). [More]
Increased production of feeling full hormone linked to reduced hunger and food intake in elderly people

Increased production of feeling full hormone linked to reduced hunger and food intake in elderly people

A preliminary study might hold the key to why over-80s are prone to losing weight. [More]
Novel dual molecular tuner offers easy way to perform in-depth analyses in mammalian cells

Novel dual molecular tuner offers easy way to perform in-depth analyses in mammalian cells

A research team headed by investigators at the Icahn School of Medicine at Mount Sinai has developed a tool that allows scientists to quickly manipulate levels of two proteins in the same cell. [More]
Soy isoflavones may help improve metabolic and cardiovascular health in women with PCOS

Soy isoflavones may help improve metabolic and cardiovascular health in women with PCOS

Women who have polycystic ovary syndrome (PCOS)—a common cause of female infertility—may be able to improve their metabolic and cardiovascular health by consuming soy isoflavones, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism. [More]
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