ScienceDaily: Latest Science News

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• Heart attacks in young women -- not all have chest pain
• MicroRNA molecule found to be potent tumor-suppressor in lung cancer
• On the road to fault-tolerant quantum computing: High temperature superconductivity induced in toplogical insulator
• Arginine therapy shows promise for sickle cell pain
• Copper bracelets, magnetic wrist straps fail to help rheumatoid arthritis
• Rare gene variant linked to macular degeneration
• Study: Improving sex life through yoga
• Young women with breast cancer overestimate the benefit of having second breast removed
• Varenicline helps smokers with depression quit smoking
• Lifestyle changes may lengthen telomeres, a measure of cell aging
• Immune system marker tied to improved bone marrow transplant outcomes
• 'Vicious cycle' shields, spreads cancer cells
• Light steered in new directions: 2-D material could lead to shaped, wavy, curved, and sharply bending ways to steer light
• What direction does Earth's center spin? New insights solve 300-year-old problem
• How and where imagination occurs in human brains
• Fewer cases of antibiotic-resistant MRSA infection in the US in 2011
• Early-warning system to prevent fishery collapse
• Sex differences in presentation of acute coronary syndrome
• Economic impact of childhood food allergies estimated
• Binge drinking: Five or more drinks common for high school seniors, some drink more
• Scientists use 'wired microbes' to generate electricity from sewage
• Harnessing the sun's energy with tiny particles
• Socio-economic status influences risk of violence against aboriginal women
• New target for melanoma treatment
• Extremely potent, improved derivatives of successful anticancer drug created
• TV drug ads: The whole truth?
• It's a shock: Life on Earth may have come from out of this world
• Wide-faced men make others act selfishly
• U. S. Workers still feeling negative effects of recession
• Invention jet prints nanostructures with self-assembling material
• Flame cultivation promising as weed control method for cranberry
• Novel biomarker identified for diabetes risk
• Risk of birth defects among women who take antihistamines in pregnancy
• Women can lower their risk for gynecologic cancers
• World's most vulnerable areas to climate change mapped
• Gut microbes closely linked to proper immune function, other health issues
• Non-traditional mathematics curriculum results in higher standardized test scores
• High debt load anticipated by medical students; African-Americans most affected
• Birth of Earth's continents: New research points to crust stacking, rather than upwelling of hot material
• Space weather may be to blame for some satellite failures
• Sensors allow for efficient irrigation, more control over plant growth
• Cold sore linked to mutation in gene
• Use of cognitive enhancers discouraged in some patients
• Prescription drug expenses in Canada are a health-care barrier
• Hospital study finds connection between dementia, delirium and declining health
• New model should expedite development of temperature-stable nano-alloys
• Environmentally friendly cement is stronger than ordinary cement
• Feeling small: Fingers can detect nano-scale wrinkles even on a seemingly smooth surface
• Doing research in the pub
• Lake Erie: Warmest in summer, coldest in winter
• Tracking drug's ability to prevent type 1 diabetes
• White blood cell levels tied to meal time
• High rate of spinal injuries among troops deployed to Iraq and Afghanistan
• Weather affects crop yield, especially hot days
• Strategies for improved management of fresh market spinach
• Studying dating abuse in the Internet age
• Specific sugar molecule causes growth of cancer cells
• Chemistry magic promises better medicine with fewer side-effects
• Potential treatment for a specific kind of pancreatic cancer
• Diet is associated with risk of depression

Heart attacks in young women -- not all have chest pain Posted: 16 Sep 2013 05:47 PM PDT Chest pain is recognized as a symptom of heart troubles, but one out of five women aged 55 years or less having a heart attack do not experience this symptom. The research findings are the first to describe this phenomenon in young women.

MicroRNA molecule found to be potent tumor-suppressor in lung cancer Posted: 16 Sep 2013 05:47 PM PDT New research shows that microRNA-486 is a potent tumor-suppressor molecule in lung cancer, and that the it helps regulate the proliferation and migration of lung-cancer cells, and the induction of programmed cell death, or apoptosis, in those cells.

On the road to fault-tolerant quantum computing: High temperature superconductivity induced in toplogical insulator Posted: 16 Sep 2013 05:47 PM PDT Scientists have induced high temperature superconductivity in a toplogical insulator, an important step on the road to fault-tolerant quantum computing.

Arginine therapy shows promise for sickle cell pain Posted: 16 Sep 2013 05:47 PM PDT Arginine therapy may be a safe and inexpensive treatment for acute pain episodes in patients with sickle cell disease, according to results of a recent clinical study.

Copper bracelets, magnetic wrist straps fail to help rheumatoid arthritis Posted: 16 Sep 2013 05:42 PM PDT Copper bracelets and magnet wrist straps have no real effect on pain, swelling, or disease progression in rheumatoid arthritis, according to new findings.

Rare gene variant linked to macular degeneration Posted: 16 Sep 2013 05:42 PM PDT An international team of researchers has identified a gene mutation linked to age-related macular degeneration, the leading cause of blindness in Americans over age 50.

Study: Improving sex life through yoga Posted: 16 Sep 2013 05:39 PM PDT Partner yoga may help couples who are struggling with sexual dysfunction, according to sexual wellness experts.

Young women with breast cancer overestimate the benefit of having second breast removed Posted: 16 Sep 2013 05:39 PM PDT A survey of young women with breast cancer found that many often overestimate the odds that cancer will occur in their other, healthy breast, and decide to have the healthy breast surgically removed even though most understood that removing both breasts does not extend their survival.

Varenicline helps smokers with depression quit smoking Posted: 16 Sep 2013 05:39 PM PDT About half of smokers seeking treatment for smoking cessation have a history of depression. Compared with smokers who are not depressed, those who suffer from a major depressive disorder have greater difficulty quitting.

Lifestyle changes may lengthen telomeres, a measure of cell aging Posted: 16 Sep 2013 05:39 PM PDT A small pilot study shows for the first time that changes in diet, exercise, stress management and social support may result in longer telomeres, the parts of chromosomes that affect aging.

Immune system marker tied to improved bone marrow transplant outcomes Posted: 16 Sep 2013 01:20 PM PDT The risk of death following bone marrow transplantation can be reduced about 60 percent using a new technique to identify bone marrow donors who make the most potent cancer-fighting immune cells.

'Vicious cycle' shields, spreads cancer cells Posted: 16 Sep 2013 01:20 PM PDT A "vicious cycle" produces mucus that protects uterine and pancreatic cancer cells and promotes their proliferation, according to research.

Light steered in new directions: 2-D material could lead to shaped, wavy, curved, and sharply bending ways to steer light Posted: 16 Sep 2013 01:20 PM PDT For the first time, researchers have built and demonstrated the ability of two-dimensional disordered photonic band gap material, designed to be a platform to control light in unprecedented ways. The new material could lead to arbitrarily shaped, wavy, curved, and sharply bending ways to steer light.

What direction does Earth's center spin? New insights solve 300-year-old problem Posted: 16 Sep 2013 01:20 PM PDT Scientists have solved a 300-year-old riddle about which direction the center of Earth spins. Earth's inner core, made up of solid iron, 'superrotates' in an eastward direction -- meaning it spins faster than the rest of the planet -- while the outer core, comprising mainly molten iron, spins westwards at a slower pace.

How and where imagination occurs in human brains Posted: 16 Sep 2013 01:20 PM PDT Philosophers and scientists have long puzzled over where human imagination comes from. In other words, what makes humans able to create art, invent tools, think scientifically and perform other incredibly diverse behaviors? The answer, researchers conclude, lies in a widespread neural network -- the brain's "mental workspace" -- that consciously manipulates images, symbols, ideas and theories and gives humans the laser-like mental focus needed to solve complex problems and come up with new ideas.

Fewer cases of antibiotic-resistant MRSA infection in the US in 2011 Posted: 16 Sep 2013 01:17 PM PDT An estimated 30,800 fewer invasive methicillin-resistant Staphylococcus aureus infections occurred in the United States in 2011 compared to 2005, according to a new study.

Early-warning system to prevent fishery collapse Posted: 16 Sep 2013 01:17 PM PDT Threats from overfishing can be detected early enough to save fisheries -- and livelihoods -- with minimal adjustments in harvesting practices, a new study shows.

Sex differences in presentation of acute coronary syndrome Posted: 16 Sep 2013 01:17 PM PDT A higher proportion of women than men 55 years and younger did not have chest pain in acute coronary syndromes (ACS, such as heart attacks or unstable angina), although chest pain was the most common symptom for both sexes, according to a new study.

Economic impact of childhood food allergies estimated Posted: 16 Sep 2013 01:17 PM PDT The overall cost of childhood food allergies was estimated at nearly $25 billion annually in a study of caregivers that quantified medical, out-of-pocket, lost work productivity and other expenses, according to a new report.

Binge drinking: Five or more drinks common for high school seniors, some drink more Posted: 16 Sep 2013 01:17 PM PDT Consuming five or more alcoholic drinks in a row is common among high school seniors, with some students engaging in extreme binge drinking of as many as 15 or more drinks, according to a new study.

Scientists use 'wired microbes' to generate electricity from sewage Posted: 16 Sep 2013 01:17 PM PDT Engineers have devised a new way to generate electricity from sewage using naturally-occurring "wired microbes" as mini power plants, producing electricity as they digest plant and animal waste.

Harnessing the sun's energy with tiny particles Posted: 16 Sep 2013 01:15 PM PDT Engineers are using a falling particle receiver to more efficiently convert the sun's energy to electricity in large-scale, concentrating solar power plants.

Socio-economic status influences risk of violence against aboriginal women Posted: 16 Sep 2013 11:32 AM PDT If aboriginal women had the same income and education levels as non-aboriginal women, their risk of being abused by a partner could drop by 40 percent, according to a new study.

New target for melanoma treatment Posted: 16 Sep 2013 11:32 AM PDT The PDK1 gene, known to regulate many cell functions such as metabolism and survival, is now identified as a key regulator in melanoma development and metastasis, offering new opportunities to interfere with cancer progression.

Extremely potent, improved derivatives of successful anticancer drug created Posted: 16 Sep 2013 11:05 AM PDT Scientists have found a way to make dramatic improvements to the cancer cell-killing power of vinblastine, one of the most successful chemotherapy drugs of the past few decades. The team's modified versions of vinblastine showed 10 to 200 times greater potency than the clinical drug.

TV drug ads: The whole truth? Posted: 16 Sep 2013 11:04 AM PDT Consumers should be wary when watching those advertisements for pharmaceuticals on the nightly TV news, as six out of 10 claims could potentially mislead the viewer, say researchers.

It's a shock: Life on Earth may have come from out of this world Posted: 16 Sep 2013 11:04 AM PDT A group of international scientists including a Lawrence Livermore National Laboratory researcher have confirmed that life really could have come from out of this world.

Wide-faced men make others act selfishly Posted: 16 Sep 2013 11:04 AM PDT Researchers have previously shown that men with wider faces are more aggressive, less trustworthy and more prone to engaging in deception. Now they have shown, in a series of four studies, that individuals behave more selfishly when interacting with men with wider faces and this selfish behavior elicits selfish behavior in others.

U. S. Workers still feeling negative effects of recession Posted: 16 Sep 2013 11:04 AM PDT The U.S. recession that began in December 2007 may have officially ended in June 2009, but in terms of job status, pay and retirement options, American workers are feeling its lingering negative impact, according to a new study.

Invention jet prints nanostructures with self-assembling material Posted: 16 Sep 2013 11:04 AM PDT Engineers have developed a new approach to the fabrication of nanostructures for the semiconductor and magnetic storage industries. This approach combines advanced ink-jet printing technology with self-assembling block copolymers.

Flame cultivation promising as weed control method for cranberry Posted: 16 Sep 2013 11:01 AM PDT Cranberries are important agricultural commodities in states such as Massachusetts, Wisconsin, New Jersey, Washington, and Oregon. But cranberry-growing operations are challenged by weeds, which compete for precious resources and often decrease fruit yields and revenues. Producers currently rely on weed management strategies such as flooding and sanding cranberry beds, hand-weeding, or applications of pre- and postemergence herbicides. Recent interest in reducing chemical inputs into cranberry growing systems has led researchers to evaluate alternative methods such as flame cultivation as a potential nonchemical weed control option.

Novel biomarker identified for diabetes risk Posted: 16 Sep 2013 10:11 AM PDT Researchers have identified a biomarker that can predict diabetes risk up to 10 years before onset of the disease.

Risk of birth defects among women who take antihistamines in pregnancy Posted: 16 Sep 2013 10:11 AM PDT Antihistamines are a group of medications that are used to treat various conditions, including allergies and nausea and vomiting. Some antihistamines require a prescription, but most are available over-the-counter, and both prescription and OTC antihistamines are often used by women during pregnancy. Until recently, little information was available to women and their health care providers on the possible risks and relative safety of these medications in pregnancy, particularly when it came to specific birth defects.

Women can lower their risk for gynecologic cancers Posted: 16 Sep 2013 10:10 AM PDT From losing weight to knowing their family history, there are several things women can do to lower their risk of developing certain types of cancer, and improve their chances for survival if they do develop one of them.

World's most vulnerable areas to climate change mapped Posted: 16 Sep 2013 10:10 AM PDT Using data from the world's ecosystems and predictions of how climate change will impact them, scientists have produced a roadmap that ID's the world's most and least vulnerable areas in the Age of Climate Change.

Gut microbes closely linked to proper immune function, other health issues Posted: 16 Sep 2013 09:22 AM PDT A new understanding of the essential role of gut microbes in the immune system may hold the key to dealing with some of the more significant health problems facing people in the world today, researchers say in a new analysis.

Non-traditional mathematics curriculum results in higher standardized test scores Posted: 16 Sep 2013 09:21 AM PDT Researchers have found high school students in the United States achieve higher scores on a standardized mathematics test if they study from a curriculum known as integrated mathematics.

High debt load anticipated by medical students; African-Americans most affected Posted: 16 Sep 2013 09:21 AM PDT The cost of a medical school education continues to rise. However, increases in the student debt burden may not be assumed equally. Researchers analyzed data from a sample of US medical students and found that 77.3 percent of black students anticipated owing more than $150,000 and 57.2 percent of Hispanics/Latinos predicted having debt in excess of $150,000. Asian students, at 50.2 percent, expected the lowest levels of debt.

Birth of Earth's continents: New research points to crust stacking, rather than upwelling of hot material Posted: 16 Sep 2013 09:21 AM PDT New research provides strong evidence against continent formation above a hot mantle plume, similar to an environment that presently exists beneath the Hawaiian Islands.

Space weather may be to blame for some satellite failures Posted: 16 Sep 2013 09:21 AM PDT A new study finds that high-energy electrons in space may be to blame for some satellite failures.

Sensors allow for efficient irrigation, more control over plant growth Posted: 16 Sep 2013 09:21 AM PDT In a recently published study, increased irrigation volume led to increased growth; plant height also increased with increasing water content threshold in all studies. Results of the experiments indicated that sensor-controlled irrigation is feasible, and that water content thresholds can be adjusted to control plant growth.

Cold sore linked to mutation in gene Posted: 16 Sep 2013 09:20 AM PDT Why some people are troubled by cold sores while others are not has finally been explained by scientists. Cold sores affect around one in five people but, until now, no one has been sure why some are more prone to the virus that causes them.

Use of cognitive enhancers discouraged in some patients Posted: 16 Sep 2013 09:20 AM PDT Cognitive enhancers -- drugs taken to enhance concentration, memory, alertness and moods -- do not improve cognition or function in people with mild cognitive impairment in the long term, according to a new study by researchers at St. Michael's Hospital.

Prescription drug expenses in Canada are a health-care barrier Posted: 16 Sep 2013 09:20 AM PDT High drug expenses in Canada are a substantial barrier for people to access prescription drugs outside of hospital, states an analysis in CMAJ.

Hospital study finds connection between dementia, delirium and declining health Posted: 16 Sep 2013 08:10 AM PDT More than half of all patients with pre-existing dementia will experience delirium while hospitalized. Failing to detect and treat their delirium early leads to a faster decline of both their physical and mental health, according to health researchers.

New model should expedite development of temperature-stable nano-alloys Posted: 16 Sep 2013 08:10 AM PDT Researchers have developed a new theoretical model that will speed the development of new nanomaterial alloys that retain their advantageous properties at elevated temperatures.

Environmentally friendly cement is stronger than ordinary cement Posted: 16 Sep 2013 08:10 AM PDT Cement made with waste ash from sugar production is stronger than ordinary cement. The research shows that the ash helps to bind water in the cement so that it is stronger, can withstand higher pressure and crumbles less. At the same time, energy is saved and pollution from cement production is reduced.

Feeling small: Fingers can detect nano-scale wrinkles even on a seemingly smooth surface Posted: 16 Sep 2013 08:08 AM PDT In a ground-breaking study, Swedish scientists have shown that people can detect nano-scale wrinkles while running their fingers upon a seemingly smooth surface. The findings could lead such advances as touch screens for the visually impaired and other products.

Doing research in the pub Posted: 16 Sep 2013 08:08 AM PDT A research team has analysed how the body language of the potential customer helps the bartenders to identify who would like to place an order and who does not. The team found that real-life observations were at odds with the widespread belief that customers wave for signalling that they would like to order a drink.

Lake Erie: Warmest in summer, coldest in winter Posted: 16 Sep 2013 08:08 AM PDT Dr. Michael Twiss, professor at Clarkson University, on examining Lake Erie, the Great Lake most impacted by summer hypoxia (the loss of oxygen at the bottom that affects fish and other living communities): "Lake Erie, the shallowest of the Great Lakes, is warmest in summer and coldest in winter," he says. "These extremes make it a good environment to predict how the lakes will change with global climate change."

Tracking drug's ability to prevent type 1 diabetes Posted: 16 Sep 2013 08:08 AM PDT Researchers will examine the ability of the drug abatacept to prevent type 1 diabetes (T1D), observing the effects of the drug in people at high risk to develop T1D.

White blood cell levels tied to meal time Posted: 16 Sep 2013 07:36 AM PDT A new link between meal times and daily changes in the immune system has been identified, and has led them to question assumptions about the roles of specific immune cells in infection and allergy.

High rate of spinal injuries among troops deployed to Iraq and Afghanistan Posted: 16 Sep 2013 07:36 AM PDT Spinal injuries are present in 1 out of 9 US military personnel sustaining combat injuries in Iraq or Afghanistan -- a much higher rate than in previous wars.

Weather affects crop yield, especially hot days Posted: 16 Sep 2013 07:36 AM PDT A study has determined the relationship between long-term weather and yield of 11 horticultural crops and one field crop in Wisconsin. The number of hot days during the growing season was determined to be the most important factor among the weather conditions examined. Results revealed the importance of the amount and frequency of seasonal precipitation, showed the negative effects of extreme temperatures on vegetable crop yields, and emphasized the importance of breeding vegetables for heat tolerance.

Strategies for improved management of fresh market spinach Posted: 16 Sep 2013 07:36 AM PDT To provide California's spinach growers with new management strategies for nitrogen fertilizer and irrigation practices, researchers performed experiments in the Salinas and San Juan Valleys of California. They determined that, to mitigate environmentally negative nitrogen losses, the nitrogen use efficiency can be increased by the use of soil testing at two critical points: at-planting and before the first midseason fertilizer application.

Studying dating abuse in the Internet age Posted: 16 Sep 2013 07:36 AM PDT Non-physical abuse by a dating partner such as threats, controlling behavior and harassing text messages can have a serious effect on a teenager's health and well-being, finds new research.

Specific sugar molecule causes growth of cancer cells Posted: 16 Sep 2013 07:36 AM PDT The process of glycosylation, where sugar molecules are attached to proteins, has long been of interest to scientists, particularly because certain sugar molecules are present in very high numbers in cancer cells. It now turns out that these sugar molecules are not only present but actually aid the growth of the malignant cells. In the long term this discovery is an important step towards a cure that can stop the growth of cancer cells.

Chemistry magic promises better medicine with fewer side-effects Posted: 16 Sep 2013 07:36 AM PDT A gentler new chemistry promises cleaner and subsequently far safer pharmaceuticals.

Potential treatment for a specific kind of pancreatic cancer Posted: 16 Sep 2013 07:35 AM PDT Researchers have identified a potentially treatable subtype of pancreatic cancer, which accounts for about 2 percent of new cases. This subtype expresses high levels of the HER2 gene. HER2-amplified breast and gastric cancers are currently treated with Herceptin.

Diet is associated with risk of depression Posted: 16 Sep 2013 07:35 AM PDT A healthy diet may reduce the risk of severe depression, according to a prospective follow-up study of more than 2,000 men. In addition, weight loss in the context of a lifestyle intervention was associated with a reduction in depressive symptoms.

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