Galaxy's snacking habits revealed
2015-05-21
A team of Australian and Spanish astronomers have caught a greedy galaxy gobbling on its neighbours and leaving crumbs of evidence about its dietary past.
Galaxies grow by churning loose gas from their surroundings into new stars, or by swallowing neighbouring galaxies whole. However, they normally leave very few traces of their cannibalistic habits.
A study published today in Monthly Notices of the Royal Astronomical Society (MNRAS) not only reveals a spiral galaxy devouring a nearby compact dwarf galaxy, but shows evidence of its past galactic snacks in unprecedented ...
Surviving harsh environments becomes a death-trap for specialist corals
2015-05-21
The success of corals that adapt to survive in the world's hottest sea could contribute to their demise through global warming, according to new research.
Researchers from the University of Southampton and the New York University Abu Dhabi found that local adaptation to high salinity levels in the southern Persian/Arabian Gulf (PAG) may prevent coral escaping their fate, as they lose their superior heat tolerance in waters with normal salinity levels.
The research is published this week in The ISME Journal, a world leading publication platform for ecological research, ...
New antibody insecticide targets malaria mosquito
2015-05-21
Malaria is a cruel and disabling disease that targets victims of all ages. Even now, it is estimated to kill one child every minute. Recent progress in halting the spread of the disease has hinged on the use of insecticide-treated bed nets and spraying programmes that target the insect that spreads the disease, the African malaria mosquito (Anopheles gambiae). However, the insects are fighting back, developing resistance to insecticides such as pyrethroid that control their numbers, forcing Brian Foy and Jacob Meyers from Colorado State University to think of alternative ...
BMJ investigation reveals how big tobacco is able to woo parliamentarians
2015-05-21
Report shows 38 MPs have accepted over £60,000 of industry hospitality since 2010
More than half of these MPs are from constituencies where the number of smoking related deaths exceeds the national average
20 of the 38 MPs who accepted hospitality voted against plain packaging
An investigation by The BMJ today asks to what extent is the tobacco industry able to reach out and influence parliamentarians?
It shows that since 2010, 38 MPs -- 29 Conservatives, eight Labour, and one independent -- have accepted over £60,000 worth of tobacco industry hospitality, ...
The Lancet: International study reveals that cold weather kills far more people than hot weather
2015-05-21
Cold weather kills 20 times as many people as hot weather, according to an international study analysing over 74 million deaths in 384 locations across 13 countries [1]. The findings, published in The Lancet, also reveal that deaths due to moderately hot or cold weather substantially exceed those resulting from extreme heat waves or cold spells.
"It's often assumed that extreme weather causes the majority of deaths, with most previous research focusing on the effects of extreme heat waves," says lead author Dr Antonio Gasparrini from the London School of Hygiene & Tropical ...
COPD is independent risk factor for cardiovascular death, but not risk of stroke
2015-05-20
ATS 2015, DENVER -- Chronic obstructive pulmonary disease, or COPD, is associated with increased risk of dying from a cardiovascular disease such as heart failure or a heart attack, as well as diseases not associated with the heart. However, COPD is not by itself associated with increased likelihood of having a stroke or a systemic embolism, according to a new research study.
Researchers from Duke University and the Mayo Clinic reached this conclusion after analyzing data from a large randomized trial of patients with atrial fibrillation, a condition that produces ...
People with depression may be more likely to develop Parkinson's disease
2015-05-20
MINNEAPOLIS - People with depression may be more likely to develop Parkinson's disease, according to a large study published in the May 20, 2015, online issue of Neurology®, the medical journal of the American Academy of Neurology.
"We saw this link between depression and Parkinson's disease during over a timespan of more than two decades, so depression may be a very early symptom of Parkinson's disease or a risk factor for the disease," said study author Peter Nordström, PhD, at Umeå University in Umeå, Sweden.
The researchers also examined siblings, ...
Support group, home exercise improves mobility for PAD patients
2015-05-20
DALLAS, May 20, 2015 -- Group behavioral therapy that encouraged walking at home significantly improved and prevented mobility loss among patients with clogged arteries in the legs, according to research in the Journal of the American Heart Association.
Known as peripheral artery disease (PAD), clogged arteries in the legs can cause pain and fatigue while walking. Maintaining mobility is integral to preserving functional independence, social interactions and daily activities.
Although studies have shown that supervised exercise on a treadmill improves walking endurance ...
Metabolic abnormalities may increase cardiovascular risk more in black women than white women
2015-05-20
DALLAS, May 20, 2015 -- Large waistline, cholesterol disorders and other metabolic abnormalities may increase the risk of cardiovascular disease more among black women than among white women, according to new research in Journal of the American Heart Association.
Previous studies have focused primarily on white participants and found that obesity without a clustering of at least three metabolic disorders (metabolic syndrome) was not associated with increased cardiovascular disease risk. The metabolic abnormalities included in the definition of the metabolic syndrome are ...
Nicotinoid and fungal disease team up to break down termites' tough defenses
2015-05-20
WEST LAFAYETTE, Ind. - Purdue University research shows that a small amount of nicotinoid pesticide substantially weakens termites' ability to fight off fungal diseases, a finding that could lead to more effective methods of pest control.
The study also provides clues into termites' robust defense systems and how nicotinoids affect social insects.
A team led by Michael Scharf, the O.W. Rollins/Orkin Chair and professor of entomology, found that a sublethal dose of imidacloprid knocked out key microbes in the termite gut and suppressed the social hygiene habits that ...
Bat-inspired sonar system unveiled at Acoustical Society meeting
2015-05-20
Rolf Mueller, an associate professor of mechanical engineering in the College of Engineering at Virginia Tech, has developed a prototype of a dynamic sonar system inspired by horseshoe bats.
The prototype was presented Wednesday (May 20) at the Acoustical Society of America meeting in Pittsburgh, Pennsylvania. The principles used in its design could eventually lead to sonar systems much more effective than the best arrays available today.
Because bats use a form of biological sonar called echolocation to navigate and hunt in the dark, they are natural models for man-made ...
Analysis compares stent expansion achieved with guidance from OCT versus IVUS
2015-05-20
Paris, France - May 20, 2015 - Data from the ILUMIEN II trial found that guidance from optimal coherence tomography (OCT) was associated with comparable stent expansion as guidance from intravascular ultrasound (IVUS) in patients undergoing percutaneous coronary intervention (PCI). Results from the study were presented today at EuroPCR 2015, the official annual meeting of the European Association for Percutaneous Cardiovascular Interventions.
Coronary stents must be optimally deployed with full lesion coverage and complete stent expansion to optimize outcomes. Less than ...
Online safety: If you want something done right, do it yourself
2015-05-20
When it comes to keeping online information safe from hackers and other criminals, it's up to the individual user to keep his or her data secure.
Unfortunately, many Internet users don't take that responsibility seriously, thinking that's the job of the Internet provider or even the company that manufactured their computer.
The end-user is often the "weakest link" in the Internet safety chain, said Saleem Alhabash, a Michigan State University faculty member who is part of a team that researches ways of making the Web safer for its users.
The team's conclusion: Internet ...
Common mutation linked to heart disease
2015-05-20
A common mutation in a gene that regulates cholesterol levels may raise the risk of heart disease in carriers, according to a new UConn Health study.
Researchers examined a mutation called the missense rs4238001 variant, which alters the type of protein made by the gene SCARB1, and thereby the body's cholesterol regulation.
The study, led by Annabelle Rodriguez-Oquendo, an endocrinologist at UConn Health, was based on information about more than 5,000 people who participated in the Multi-Ethnic Study of Artherosclerosis in major American cities from 2000 to 2002. ...
Paleontologists discover the first dinosaur fossil in Washington State
2015-05-20
The fossils of the first dinosaur fossil from Washington State were collected along the shores of Sucia Island State Park in the San Juan Islands, and described in a study published May 20, 2015 in the open-access journal PLOS ONE by Brandon Peecook and Christian Sidor from the Burke Museum of Natural History and Culture at the University of Washington.
The fossils were discovered while collecting ammonite fossils (a nautilus-like creature) from a marine rock unit known as the Cedar District Formation. The authors of the study describe the fossil as the partial left ...
Burke Museum paleontologists discover the first dinosaur fossil in Washington state
2015-05-20
Burke Museum paleontologists have published a description of the first dinosaur fossil from Washington state. The fossil was collected by a Burke Museum research team along the shores of Sucia Island State Park in the San Juan Islands.
Burke Museum researchers discovered the fossil while collecting ammonite fossils (a creature with a spiral shell) from a marine rock unit known as the Cedar District Formation. The researchers first noticed a small section of exposed bone on the surface of the rocks, then returned with a team of paleontologists to help excavate the fossil ...
Paracetamol in pregnancy may lower testosterone in unborn boys
2015-05-20
Prolonged paracetamol use by pregnant women may reduce testosterone production in unborn baby boys, research has found.
Researchers say their findings could help to explain reported links between paracetamol use in pregnancy and reproductive health problems in young boys.
Paracetamol is the primary medicine used for managing pain and fever during pregnancy.
The authors recommend that expectant mothers should follow existing guidelines that the painkiller be taken at the lowest effective dose for the shortest possible time.
Testosterone, produced in the testicles, ...
Public not being informed about dangers of medical overdiagnosis
2015-05-20
A national survey reveals that only one in ten Australians report being told about the risk of overdiagnosis by their doctors, according to research published today in the scientific journal PLOS ONE.
The increasingly recognised problem of overdiagnosis happens when someone is diagnosed with a disease that will never cause them any harm, often as a result of healthy people being screened for diseases such as breast or prostate cancer. Overdiagnosis can be harmful due to unnecessary labelling and treatment.
The telephone survey (mobile and landline) of 500 Australians ...
American College of Cardiology registry aims to improve cardiovascular care in India
2015-05-20
WASHINGTON (May 20, 2015) - Despite challenges, it is feasible to collect and study the quality of outpatient cardiovascular care in a resource-limited environment like India, according to a pilot study published today in the Journal of the American Heart Association. Researchers used the American College of Cardiology's PINNACLE India Quality Improvement Program registry to examine performance measures and outline areas for further improvement in cardiovascular care delivery.
There is a growing burden of cardiovascular disease in India, but only limited data is available ...
Re-engineered antibiotic shows potential for treatment of drug-resistant bacteria
2015-05-20
(MEMPHIS, Tenn. - May 20, 2015) Researchers led by St. Jude Children's Research Hospital scientists have developed a second-generation antibiotic that shows early effectiveness against common bacterial infections that pose a serious health threat to children and adults. The findings appear today in the scientific journal Science Translational Medicine.
The study marks the second time in recent years that St. Jude researchers have created promising antibiotics by changing the chemical structure of an old antibiotic named spectinomycin. Spectinomycin is a safe, but weak ...
New music strategy shows 70 per cent increase in exercise adherence
2015-05-20
TORONTO, May 20, 2015 - The use of personalized music playlists with tempo-pace synchronization increases adherence to cardiac rehab by almost 70 per cent--according to a study published in Sports Medicine -Open.
"Cardiac rehab has been proven to improve long-term survival for someone who's had a heart event by 20 per cent," said Dr. David Alter, Senior Scientist, Toronto Rehab, University Health Network, and Institute for Clinical Evaluative Sciences. "Our challenge is there is a high drop-out rate for these programs and suboptimal adherence to the self-management of ...
New studies contradict earlier findings on Rett syndrome
2015-05-20
Independent reproduction of other scientists' results is a cornerstone of solid research, but scientists are rarely recognized for successfully reproducing published findings, much less for demonstrating that scientific findings cannot be reproduced. However, failure to reproduce a finding may suggest doubt about the robustness of the original work, which carries implications for anyone looking to build on those findings.
University of Iowa neuroscientist Andrew Pieper unexpectedly found himself in the position of contradicting seemingly promising results published in ...
With one false tweet, computer-based Hack Crash led to real panic
2015-05-20
BUFFALO, N.Y. - A false tweet from a hacked account owned by the Associated Press (AP) in 2013 sent financial markets into a tailspin. The Dow Jones Industrial Average dropped 143.5 points and the Standard & Poor's 500 Index lost more than $136 billion of its value in the seconds that immediately followed the post.
Once the nature of the tweet was discovered, the markets corrected themselves almost as quickly as they were skewed by the bogus information, but the event, known as Hack Crash, demonstrates the need to better understand how social media data is linked to decision ...
Mothers of sons more likely to develop diabetes during pregnancy
2015-05-20
Washington, DC--An unborn child's gender can affect the mother's risk of developing gestational diabetes or Type 2 diabetes later in life, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism.
Gestational diabetes occurs when a pregnant woman has higher levels of glucose, or blood sugar, in the bloodstream than normal. Women who have been diagnosed with gestational diabetes face a greater risk of developing Type 2 diabetes in the future. As many as 9 percent of pregnant women develop gestational diabetes, according ...
People with metabolic syndrome face higher cardiovascular death risk
2015-05-20
Washington, DC--People who have metabolic syndrome are more likely to die from cardiovascular disease than people who do not have the condition, and having diabetes or high blood pressure worsens the risk, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism.
Metabolic syndrome is a cluster of risk factors that raise the chances of developing heart disease, stroke and diabetes, according to the Hormone Health Network. The risk factors include abdominal obesity, high levels of fats in the blood called triglycerides, ...
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