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Science News Archive May 2012 - Page 5


Page 5 of 31

Why chemotherapy fails

A study by Weizmann Institute scientists reveals that leukemia recurrence is often caused by 'cancer stem cells' that divide slowly, evading chemotherapy drugs. These cells can give rise to new rapidly-dividing cancer cells, making them a key target for new treatment approaches.

Study finds emissions from widely used cookstoves vary with use

A new study found that emissions from cookstoves are highly dependent on how they are used, and laboratory tests do not accurately reflect real-world operations. The research team developed a real-time analysis technique called Patterns of Real-Time Emissions Data (PaRTED) to measure emissions under different operating conditions.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalEnvironmental Science & Technology·DateMay 29, 2012

Better urban planning is essential to improve health of the 60 percent of the global population that will be living in cities by 2030

The Lancet Commission on Healthy Cities highlights the need for active planning to address urban health issues, with examples from Mumbai, London, and Bogota. The report recommends five key recommendations to improve urban health, including building political alliances and experimenting with diverse urban health projects.

SourceThe Lancet_DELETED·JournalThe Lancet·DateMay 29, 2012

World's largest release of comprehensive human cancer genome data helps speed discoveries

The St. Jude Children's Research Hospital has released the world's largest comprehensive human cancer genome data, exceeding volume of all other sources combined. This valuable information is available for free access by researchers, accelerating disease research and potentially leading to new treatment options for childhood cancers.

SourceSt. Jude Children's Research Hospital·JournalNature Genetics·DateMay 29, 2012

Why do Scots die younger?

A study published in Public Health found that Scotland's higher mortality rates may be linked to the political direction of past decades, rather than single factors like smoking or poor diet. The researchers identified a range of potential explanations, including climate change and economic inequality.

SourceElsevier·JournalPublic Health·DateMay 29, 2012

New federal disclosure law may have little impact on drugs prescribed

A Colorado School of Public Health researcher found that a new federal disclosure law has little effect on the prescribing of certain medications, including statins and SSRIs. The study suggests that transparency is important but may not be enough to deter physicians from accepting payments from pharmaceutical companies.

SourceUniversity of Colorado Anschutz Medical Campus·JournalArchives of Internal Medicine·DateMay 29, 2012

Short movies stored in an atomic vapor

Researchers at Joint Quantum Institute store and replay two separate images, a feat of cinematography, using a room-temperature vapor of atoms. The new storage process has great promise for quantum information and may lead to the development of a random access memory for continuous variable quantum information.

SourceJoint Quantum Institute·JournalOptics Express·DateMay 29, 2012

OHSU Oregon National Primate Research Center develops new, safer method for making vaccines

Researchers at Oregon Health & Science University's ONPRC have discovered a new method for creating vaccines that is thought to be safer and more effective than current approaches. The approach uses hydrogen peroxide to inactivate viruses for use as vaccines, showing protective vaccine-induced immunity against three diseases: West Nile...

SourceOregon Health & Science University·JournalNature Medicine·DateMay 29, 2012

PCB can increase risk of abdominal fat

A new study published in Obesity found a correlation between PCB exposure and increased distribution of body fat to the abdomen. Researchers analyzed data from over 1,000 70-year-olds and found that high levels of PCB189 were related to a high proportion of visceral fat.

SourceUppsala University·JournalObesity·DateMay 28, 2012

Aggressively controlling glucose levels may not reduce kidney failure in Type 2 diabetes

Researchers at Yale University found that intensively controlling glucose levels did not definitively reduce the risk of impaired kidney function, dialysis, or death from kidney disease. The study suggests that patients may not be better off with this approach and questions the benefits of aggressive glycemic control in Type 2 diabetes

SourceYale University·JournalArchives of Internal Medicine·DateMay 28, 2012

Policy of including smokers in donor pool improves survival rates for patients on lung transplant waiting lists and should be continued

Research shows that lung transplant patients receiving organs from smokers tend to survive longer than those waiting on the list, with significant benefits for patients with septic lung disease and fibrosis. The UK's current selection policy of including both smoking and non-smoking donors improves survival rates and should be continued.

SourceThe Lancet_DELETED·JournalThe Lancet·DateMay 28, 2012

Family values

A new study demonstrates that female choice and faithfulness played a crucial role in human evolution, leading to the emergence of the modern family. The transition from promiscuity to pair-bonding was characterized by a reduction in male-to-male competition in favor of providing for females and close parental involvement.

SourceNational Institute for Mathematical and Biological Synthesis (NIMBioS)·JournalProceedings of the National Academy of Sciences·DateMay 28, 2012

Inequality dates back to the Stone Age

A new study by archaeologists from the Universities of Bristol, Cardiff and Oxford found that Neolithic farmers buried with distinctive stone adzes had access to better land than those without. The analysis revealed sex-biased mobility patterns and status differences among early European populations.

SourceUniversity of Bristol·JournalProceedings of the National Academy of Sciences·DateMay 28, 2012

Climate change led to collapse of ancient Indus civilization, study finds

A new study combines archaeology and geoscience to reveal that climate change was a key factor in the collapse of the ancient Indus civilization around 4000 years ago. The research suggests that weakened monsoon rains led to reduced river dynamics, contributing to the decline of cities and the shift towards small farming communities.

SourceWoods Hole Oceanographic Institution·JournalProceedings of the National Academy of Sciences·DateMay 28, 2012

Less couch time equals fewer cookies

A Northwestern University study found that simply changing one bad habit, such as spending less time on the couch, can have a domino effect on other unhealthy behaviors. The most effective way to rehab a delinquent lifestyle requires two key behavior changes: cutting time spent in front of screens and eating more fruits and vegetables.

SourceNorthwestern University·JournalArchives of Internal Medicine·DateMay 28, 2012

Earlier detection of bone loss may be in future

Researchers at Arizona State University and NASA have developed a new technique for detecting bone loss using isotope analysis. This method is more sensitive than current X-ray methods and poses less risk to patients, making it a promising tool for early detection of diseases such as osteoporosis.

SourceArizona State University·JournalProceedings of the National Academy of Sciences·DateMay 28, 2012

Meta-analysis examines intensive glycemic control, renal disease in patients with type 2 diabetes

A meta-analysis of seven clinical trials found that intensive glucose control reduces microalbuminuria and macroalbuminuria in type 2 diabetes patients, but lacks evidence for reduced risk of significant clinical renal outcomes. The study suggests a reevaluation of the benefits of intensive glycemic control in preventing renal disease.

SourceJAMA Network·JournalArchives of Internal Medicine·DateMay 28, 2012

Powerful new approach to attack flu virus

A new protein-based antiviral approach has been developed to combat deadly flu epidemics, neutralizing vulnerable sites on H1N1 and H5N1 viruses. This innovative method uses manufactured genes as therapeutics, designed using computer-aided design and optimized through DNA deep sequencing.

SourceMichigan State University·JournalNature Biotechnology·DateMay 27, 2012

Timing is everything

Researchers found that modern birds are living dinosaurs with skulls similar to those of their juvenile ancestors. By analyzing fossil evidence and CT scans, they discovered that a change in developmental timing led to the evolution of birds, enabling them to retain physical characteristics of baby dinosaurs into adulthood.

SourceHarvard University·JournalNature·DateMay 27, 2012