PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Selective estrogen signaling key to postmenopausal risk of obesity

2011-01-19
(Press-News.org) The hormone estradiol-17-beta is a key reproductive hormone. However, it also contributes to the regulation of energy balance and body weight. As a result, estrogen deficiency following menopause is associated with an increased probability of obesity and increased risk for developing type 2 diabetes. A team of researchers, led by Jon Levine, at Northwestern University, Evanston, has now generated new insight into the mechanisms by which ER-alpha signaling maintains normal energy balance. Specifically, the team found that nonclassical ER-alpha signaling is key to the effects of estradiol-17-beta on energy balance. These data lead them to suggest that it might be possible to develop drugs that selectively activate nonclassical ER-alpha signaling to reduce the risks of obesity and metabolic disturbances in postmenopausal women.

INFORMATION: TITLE: Genetic rescue of nonclassical ER-alpha signaling normalizes energy balance in obese Er-alpha-null mutant mice

AUTHOR CONTACT:
Jon E. Levine
Northwestern University, Evanston, Illinois, USA.
Phone: 847.491.7180; Fax: 847.491.5211; E-mail: jlevine@northwestern.edu.

View this article at: http://www.jci.org/articles/view/41702?key=e6c0c5e6b4574e440bcb


ELSE PRESS RELEASES FROM THIS DATE:

JCI online early table of contents: Jan. 18, 2011

2011-01-19
EDITOR'S PICK: Selective estrogen signaling key to postmenopausal risk of obesity The hormone estradiol-17-beta is a key reproductive hormone. However, it also contributes to the regulation of energy balance and body weight. As a result, estrogen deficiency following menopause is associated with an increased probability of obesity and increased risk for developing type 2 diabetes. A team of researchers, led by Jon Levine, at Northwestern University, Evanston, has now generated new insight into the mechanisms by which ER-alpha signaling maintains normal energy balance. ...

Watching others smoke makes smokers plan to light up

Watching others smoke makes smokers plan to light up
2011-01-19
Seeing actors smoke in a movie activated the brain areas of smokers that are known to interpret and plan hand movements, as though they too were about to light a cigarette, according to a new study in the Jan. 19 issue of The Journal of Neuroscience. Habitual smokers repeat the same hand motions, sometimes dozens of times a day. In this study, researchers led by senior investigator Todd Heatherton, PhD, and graduate student Dylan Wagner of Dartmouth College set out to determine whether the parts of the brain that control that routine gesture could be triggered ...

NSAID receptor responsible for olive oil's 'cough' and more

2011-01-19
PHILADELPHIA (January 18, 2011) – Scientists from the Monell Center and collaborators report that a receptor known as TRPA1 is activated by two structurally unrelated anti-inflammatory compounds. The first, oleocanthal, is a natural polyphenolic anti-inflammatory agent uniquely found in extra virgin olive oil; while the second, ibuprofen, is an over-the-counter non-steroidal anti-inflammatory drug (NSAID). The researchers also demonstrate that the TRPA1 receptor is spatially localized to the back of the throat, which is exactly where the distinctive irritating sting ...

Use of antidepressant associated with reduction in menopausal hot flashes

2011-01-19
Women who were either in the transition to menopause or postmenopausal experienced a reduction in the frequency and severity of menopausal hot flashes with the use of the antidepressant medication escitalopram, compared to women who received placebo, according to a study in the January 19 issue of JAMA. "Hormonal agents have been the predominant therapy for menopausal hot flashes, but their use decreased substantially following the shifts in risk-benefit ratios that were identified in the Women's Health Initiative Estrogen plus Progestin randomized controlled trial. ...

Lower biomarker levels, less education associated with greater cognitive decline

2011-01-19
Older adults without dementia and with lower levels in plasma of the biomarkers beta-amyloid 42/40 (protein fragments) had an increased rate of cognitive decline over a period of 9 years, according to a study in the January 19 issue of JAMA. The researchers also found that this relationship was stronger among individuals with less education and lower levels of literacy. An estimated 36 million people currently have dementia, with the prevalence expected to double every 20 years, according to background information in the article. "Thus, biomarkers to identify elderly ...

Imaging procedure can identify biomarker associated with Alzheimer's disease

2011-01-19
Preliminary research suggests that use of a type of molecular imaging procedure may have the ability to detect the presence of beta-amyloid in the brains of individuals during life, a biomarker that is identified during autopsy to confirm a diagnosis of Alzheimer disease, according to a study in the January 19 issue of JAMA. "Both diagnosis and treatment of Alzheimer disease (AD) are hampered by the lack of noninvasive biomarkers of the underlying pathology. Between 10 percent and 20 percent of patients clinically diagnosed with AD lack AD pathology at autopsy, and community ...

Big city life may make residents lean toward green, study says

Big city life may make residents lean toward green, study says
2011-01-19
EAST LANSING, Mich. – The downsides of China's explosive urbanization – like pollution and greenhouse gas emissions – now are joined by an upside: Better environmental citizens. It's the first time scientists have weighed employment and leadership when considering environmental behavior in China's cities. In the latest online edition of the British journal Environmental Conservation, scientists at the Center for Systems Integration and Sustainability at Michigan State University and collaborators in the U.S. and China show that city size – especially the good jobs there ...

Mother's stem cells likely key to treating genetic disease before birth

Mothers stem cells likely key to treating genetic disease before birth
2011-01-19
UCSF researchers have tackled a decade-long scientific conundrum, and their discovery is expected to lead to significant advances in using stem cells to treat genetic diseases before birth. Through a series of mouse model experiments, the research team determined that a mother's immune response prevents a fetus from accepting transplanted blood stem cells, and yet this response can be overcome simply by transplanting cells harvested from the mother herself. "This research is really exciting because it offers us a straightforward, elegant solution that makes fetal stem ...

Scientists: Big city life may alter green attitudes

Scientists: Big city life may alter green attitudes
2011-01-19
People with good jobs found in large cities are more likely to engage in pro-environmental activities. So says a new study of China's environmental behavior published this week in the British journal Environmental Conservation. For the first time, scientists weighed employment and leadership when considering how people act regarding their natural surroundings. They found the status and political power of companies in cities such as Beijing, Shanghai and Tianjin strongly influence the conservation practices of their employees. Moreover, the scientists found employees ...

Standardized screening rule for TB in people living with HIV in low income settings

2011-01-19
Standardized screening rule for TB in people living with HIV in low income settings In 2009, 1.7 million people died from TB— which translates to 4700 deaths a day—including 380, 000 people living with HIV. TB remains the most common cause of death in people living with HIV. This week in PLoS Medicine, Haileyesus Getahun (WHO) and colleagues report the development of a simple, standardized tuberculosis (TB) screening rule for resource-constrained settings, to identify people living with HIV who need further investigation for TB disease. The results of this study, which ...

LAST 30 PRESS RELEASES:

Scientists unlock secrets behind flowering of the king of fruits

Texas A&M researchers illuminate the mysteries of icy ocean worlds

Prosthetic material could help reduce infections from intravenous catheters

Can the heart heal itself? New study says it can

Microscopic discovery in cancer cells could have a big impact

Rice researchers take ‘significant leap forward’ with quantum simulation of molecular electron transfer

Breakthrough new material brings affordable, sustainable future within grasp

How everyday activities inside your home can generate energy

Inequality weakens local governance and public satisfaction, study finds

Uncovering key molecular factors behind malaria’s deadliest strain

UC Davis researchers help decode the cause of aggressive breast cancer in women of color

Researchers discovered replication hubs for human norovirus

SNU researchers develop the world’s most sensitive flexible strain sensor

Tiny, wireless antennas use light to monitor cellular communication

Neutrality has played a pivotal, but under-examined, role in international relations, new research shows

Study reveals right whales live 130 years — or more

Researchers reveal how human eyelashes promote water drainage

Pollinators most vulnerable to rising global temperatures are flies, study shows

DFG to fund eight new research units

Modern AI systems have achieved Turing's vision, but not exactly how he hoped

Quantum walk computing unlocks new potential in quantum science and technology

Construction materials and household items are a part of a long-term carbon sink called the “technosphere”

First demonstration of quantum teleportation over busy Internet cables

Disparities and gaps in breast cancer screening for women ages 40 to 49

US tobacco 21 policies and potential mortality reductions by state

AI-driven approach reveals hidden hazards of chemical mixtures in rivers

Older age linked to increased complications after breast reconstruction

ESA and NASA satellites deliver first joint picture of Greenland Ice Sheet melting

Early detection model for pancreatic necrosis improves patient outcomes

Poor vascular health accelerates brain ageing

[Press-News.org] Selective estrogen signaling key to postmenopausal risk of obesity