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Science News Archive June 2013 - Page 19


Page 19 of 30

Screening fails to affect breast cancer mortality statistics

New research published by the University of Oxford found that breast cancer screening programs do not reduce mortality rates, contradicting previous findings. The study analyzed data from England over nearly 40 years and concluded that there is no evidence of a benefit from mammographic screening on breast cancer mortality.

SourceSAGE·JournalJournal of the Royal Society of Medicine·DateJun 11, 2013

Do parasites upset food web theory?

Researchers found that including parasites in food web models changes the distribution of feeding links per species, average shortest feeding chain between pairs of species, and proportion of omnivores or cannibals. Most changes occur due to increased diversity and complexity, rather than parasite-specific effects.

SourcePLOS·JournalPLOS Biology·DateJun 11, 2013

Fetal neuromaturation associated with mother's exposure to ddt and other environmental contaminants

A Johns Hopkins study of 50 pregnant women found associations between higher exposure to DDT and other contaminants and increased fetal motor activity, as well as reduced fetal heart rate accelerations. The findings suggest the developing fetus is susceptible to environmental exposures, highlighting the need for prenatal protection.

SourceJohns Hopkins Bloomberg School of Public Health·JournalJournal of Exposure Science & Environmental Epidemiology·DateJun 11, 2013

You're so vain: U-M study links social media and narcissism

A new U-M study explores the relationship between social media use and narcissism levels, finding that college students who score higher in narcissism tend to post more on Twitter, while middle-aged adults use Facebook to boost their self-image. The study sheds light on how social media platforms can amplify narcissistic tendencies.

SourceUniversity of Michigan·JournalComputers in Human Behavior·DateJun 11, 2013

Video gamers really do see more

Research at Duke University found that gamers excel in extracting information from visual scenes, recalling letters in a flash of light, and tracking multiple items. Gamers' brains appear to be trained for better decision-making with more available information, potentially due to improved visual sensitivity.

Sleep apnea increases risk of sudden cardiac death

A large study published in the Journal of the American College of Cardiology found that moderate obstructive sleep apnea can significantly increase a person's risk for sudden cardiac death. The study revealed that patients with low oxygen saturation levels during sleep had an 80% increased risk of sudden cardiac death.

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateJun 11, 2013

Females fend off gut diseases

A Michigan State University study found that female mice are protected from severe symptoms of colitis and bone deterioration, suggesting a reduced gut inflammation response. The findings could aid in understanding and treating the 1.4 million Americans suffering from inflammatory bowel diseases.

SourceMichigan State University·JournalInflammatory Bowel Diseases·DateJun 11, 2013

Painting by numbers

Researchers at the University of Veterinary Medicine, Vienna discovered that 17 single-nucleotide polymorphisms are associated with female abdominal pigmentation in Drosophila melanogaster. These SNPs were found to lie in or near genes involved in pigment synthesis, suggesting a complex regulation mechanism controlling pigmentation var...

Hearing loss clue uncovered

Researchers have discovered a novel genetic mutation in the SERPINB6 gene that causes malfunction of an inhibitor enzyme, leading to accelerated hearing loss. In humans, individuals with this mutation typically lose their hearing from 20 years of age, while mice with the condition start losing their hearing at three weeks old.

SourceUniversity of Melbourne·JournalAmerican Journal Of Pathology·DateJun 11, 2013

Hyundai Hope on Wheels awards grant to UCLA's Children's Discovery and Innovation Institute

Hyundai Hope on Wheels has awarded a $75,000 Hyundai Scholar Grant to Dr. Vivian Chang at UCLA's Children's Discovery and Innovation Institute to support her research on DNA sequencing technology for identifying cancerous genes in children. The grant will enable oncologists to design personalized surveillance programs using advanced to...

Wood not so green a biofuel

A Dartmouth-led study finds that logging can release large amounts of carbon stored in deep forest soils, potentially offsetting the benefits of using wood for energy. The research suggests that increased reliance on forest biomass may actually increase atmospheric carbon dioxide levels.

SourceDartmouth College·JournalGlobal Change Biology·DateJun 11, 2013

Perfect pitch may not be absolute after all

Researchers discovered that people with absolute pitch can be misled by gradual changes in pitch while listening to music. The study, led by Stephen Hedger and Howard Nusbaum, found that exposure to detuned music affects how individuals identify notes as being in or out of tune.

SourceUniversity of Chicago·JournalPsychological Science·DateJun 11, 2013

1 in 6 women at fracture clinics report domestic violence

A large international study led by McMaster researchers found that one in six women arriving at orthopedic fracture clinics have been victims of physical, emotional, or sexual violence within the past year. This highlights the need for healthcare professionals to identify and support victims of intimate partner violence, who are often ...

SourceMcMaster University·JournalThe Lancet·DateJun 11, 2013

New archaeogenetic research refutes earlier findings

A new article in Proceedings of the National Academy of Sciences refutes a theory that modern humans settled in southern Asia before the Mount Toba eruption. The research uses mitochondrial DNA evidence and other data to conclude that modern humans arrived in India no earlier than 60,000 years ago.

SourceUniversity of Huddersfield·JournalProceedings of the National Academy of Sciences·DateJun 11, 2013

Study builds dossier on JC polyomavirus

Researchers have found that common mutant forms of the JC polyomavirus are not infectious, but may still contribute to disease. The mutants appear to be up to no good by only being found in immunocompromised patients and possibly helping the main virus evade the immune system.

SourceBrown University·JournalmBio·DateJun 11, 2013