Hormones News and Research

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Body's sodium levels fluctuate rhythmically with 7-day and monthly cycles

Clinical pharmacologist Jens Titze, M.D., knew he had a one-of-a-kind scientific opportunity: the Russians were going to simulate a flight to Mars, and he was invited to study the participating cosmonauts.

9 Jan 2013

Study finds a new way in which calcium signaling may be controlled

In a study published in Current Biology, scientists from the University of Rochester Medical Center, Marquette University and Oberlin College discovered a new way in which calcium signaling may be controlled. Study authors say their findings define a mechanism for regulating calcium signaling that has never been recognized before and should be of great help to the thousands of scientists who study the extremely important role of calcium signaling in health and disease.

7 Jan 2013

Researchers analyze impact of 3 unexpected sex determination factors

So, is it a girl or a boy? This is the first question parents ask at the birth of an infant. Though the answer is obvious, the mechanism of sex determination is much less so. Researchers at the University of Geneva (UNIGE) attempt to shed light on this complex process by identifying the crucial role played by insulin and IGF1 and IGF2 growth factors, a family of hormones known for its role in metabolism and growth.

3 Jan 2013

Fructose linked to food-seeking behavior and food intake

In a study examining possible factors regarding the associations between fructose consumption and weight gain, brain magnetic resonance imaging of study participants indicated that ingestion of glucose but not fructose reduced cerebral blood flow and activity in brain regions that regulate appetite, and ingestion of glucose but not fructose produced increased ratings of satiety and fullness, according to a preliminary study published in the January 2 issue of JAMA.

2 Jan 2013

Androgen deprivation therapies may have adverse effects in men with precancers

The use of androgen deprivation therapies to prevent precancerous prostate abnormalities developing into aggressive prostate cancer may have adverse effects in men with precancers with specific genetic alterations, according to data from a preclinical study recently published in Cancer Discovery, a journal of the American Association for Cancer Research.

21 Dec 2012

Maternal vitamin D deficiency could cause low birth weight

Women deficient in vitamin D early in their pregnancies are more likely to deliver babies with lower birth weights, University of Pittsburgh Graduate School of Public Health research reveals.

20 Dec 2012

GI bacteria exert some control over their hosts' appetites: Review

Over the last half decade, it has become increasingly clear that the normal gastrointestinal (GI) bacteria play a variety of very important roles in the biology of human and animals. Now Vic Norris of the University of Rouen, France, and coauthors propose yet another role for GI bacteria: that they exert some control over their hosts' appetites.

20 Dec 2012

Views on Conn. shootings: Mental illness doesn't generally lead to violence; Need for more treatment options; Helping the survivors

It's possible that preventing people with schizophrenia, bipolar disorder and other serious mental illnesses from getting guns might decrease the risk of mass killings. Even the Supreme Court, which in 2008 strongly affirmed a broad right to bear arms, at the same time endorsed prohibitions on gun ownership "by felons and the mentally ill." But mass killings are very rare events, and because people with mentally illness contribute so little to overall violence, these measures would have little impact on everyday firearm-related killings.

19 Dec 2012

ARCHITECT 2nd Generation Testosterone Assay from Abbott

Testosterone is an important androgen hormone in the health and well-being of men and women. Testosterone levels are associated with sexual development, libido, protection against osteoporosis, and cardiovascular health. In men, insufficient testosterone levels (hypogonadism) have been linked to obesity and low libido.

18 Dec 2012

UCSD Moores Cancer Center offers insights into flavorful healthy foods

What's round, red, full of holiday cheer, and (dare we say it) good for you? It's the cranberry. Its powerful goodness, coupled with cruciferous vegetables- such as broccoli, bok choy, and kale- and festive seasonal fruits like persimmons, can change attitudes about "healthy" eating during the holidays. Gain some flavorful food insights in Food for Thought: Healing Foods to Savor, authored by nutritional experts at University of California, San Diego Moores Cancer Center.

18 Dec 2012

Paternal exposure to cocaine can impair gene expression and behavior in their offspring

Research from the Perelman School of Medicine at the University of Pennsylvania and Massachusetts General Hospital (MGH) reveals that sons of male rats exposed to cocaine are resistant to the rewarding effects of the drug, suggesting that cocaine-induced changes in physiology are passed down from father to son.

17 Dec 2012

Mineral metabolism abnormalities may increase risk of kidney failure among African Americans

Abnormalities of mineral metabolism worsen with progressive chronic kidney disease (CKD) and are linked with a higher risk for kidney failure among African Americans, according to a study appearing in an upcoming issue of the Journal of the American Society of Nephrology (JASN).

14 Dec 2012

EZH2 protein enables advanced prostate cancers to spread without stimulation by male hormones

Scientists at Dana-Farber Cancer Institute have discovered a molecular switch that enables advanced prostate cancers to spread without stimulation by male hormones, which normally are needed to spur the cancer's growth. They say the finding could lead to a new treatment for prostate cancers that are no longer controlled by hormone-blocking drugs.

14 Dec 2012

Delayed childbearing may protect against triple-negative breast cancer

Younger women who wait at least 15 years after their first menstrual period to give birth to their first child may reduce their risk of an aggressive form of breast cancer by up to 60 percent, according to a Fred Hutchinson Cancer Research Center study.

12 Dec 2012

Study identifies KNDy neurons as a likely control switch of hot flushes

Hot flushes affect millions of people, and not just women. Yet, it is still unclear what causes the episodes of temperature discomfort, often accompanied by profuse sweating.

12 Dec 2012

Alpha arrestins may play a role in cell signaling that is crucial to new drug development

A newly found understanding of receptor signaling may have revealed a better way to design drugs. A study from Nationwide Children's Hospital suggests that a newly identified group of proteins, alpha arrestins, may play a role in cell signaling that is crucial to new drug development.

11 Dec 2012

New study could help develop anti-inflammatory drugs with fewer side effects

10 Dec 2012

Scientists identify key molecular pathway that leads to depression

Scientists have identified the key molecular pathway leading to depression, revealing potential new targets for drug discovery, according to research led by King's College London's Institute of Psychiatry. The study, published today in Neuropsychopharmacology, reveals for the first time that the 'Hedgehog pathway' regulates how stress hormones, usually elevated during depression, reduce the number of brain cells.

6 Dec 2012

Selective targeting of neurotransmitters may allow for new medication therapies for GI conditions

Selective targeting of the neurotransmitter that differentially affects brain cells that control the two distinct functions of the pancreas may allow for new medication therapies for conditions like diabetes, dyspepsia and gastro-esophageal reflux, according to Penn State College of Medicine researchers.

5 Dec 2012

Enzalutamide shows promise in treating triple-negative and estrogen-positive breast cancer

Breast cancers are defined by their drivers - estrogen and progesterone receptors (ER and PR) and HER2 are the most common, and there are drugs targeting each. When breast cancer has an unknown driver, it also has fewer treatment options - this aggressive form of breast cancer without ER, PR or HER2, which was thought not to be driven by hormones, is known as triple negative.

3 Dec 2012