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Science News for December 2, 2009


Researchers demonstrate a better way for computers to 'see'

Researchers from Harvard and MIT demonstrate a new method to build better artificial visual systems by combining genetic screening techniques with high-performance gaming hardware. The approach enables the analysis of thousands of candidate models in parallel, resulting in significant improvements over traditional methods.

SourceHarvard University·JournalPLOS Computational Biology·DateDec 2, 2009

New CRC screening combination increases detection by 10 percent

A new study published in Clinical Gastroenterology and Hepatology found that combining sigmoidoscopy and fecal immunochemical test (FIT) improves CRC detection by 10 percent. This combination is particularly useful for communities with limited colonoscopy access, as it allows for more effective screening of advanced proximal tumors.

SourceAmerican Gastroenterological Association·JournalClinical Gastroenterology and Hepatology·DateDec 2, 2009

The hidden lives of proteins

A Brandeis study directly visualizes protein structures crucial for enzyme catalysis at high-energy states, suggesting new molecular sites for potential drug targets. The research reveals the importance of protein dynamics in enzyme function, offering insights into protein function and potential avenues for targeted drug design.

SourceBrandeis University·JournalNature·DateDec 2, 2009

Music and speech based on human biology

Research at Duke University reveals that music scales are based on the physics of the human voice, mirroring speech's emotional content. This study provides new insights into why humans appreciate music, suggesting it mimics speech's emotional expression.

SourceDuke University·JournalPLOS ONE·DateDec 2, 2009

Ecstasy may be linked to sleep apnea

Recreational ecstasy users may be at a higher risk for sleep apnea due to the damage caused by the drug on brain neurons related to serotonin. The study found that ecstasy users had over eight times the risk of sleep apnea compared to non-users, with longer use associated with increased episodes.

SourceAmerican Academy of Neurology·JournalNeurology·DateDec 2, 2009

Waterpipe tobacco smokers inhale same toxicants as cigarette smokers

A study led by Virginia Commonwealth University researcher found that waterpipe tobacco smokers are exposed to the same toxicants as cigarette smokers, including carbon monoxide and nicotine. The study, which compared waterpipe and cigarette smoking under controlled conditions, showed that waterpipe smokers inhale more smoke than cigar...

SourceVirginia Commonwealth University·JournalAmerican Journal of Preventive Medicine·DateDec 2, 2009

Obesity will snuff out health benefits gained by smoking declines

A study by University of Michigan and Harvard researchers found that despite declines in smoking rates, the US population is experiencing a rise in obesity, which is overtaking the health benefits gained from quitting smoking. The study suggests that if current trends continue, nearly half of the population will be obese by 2020.

SourceMichigan Medicine - University of Michigan·JournalNew England Journal of Medicine·DateDec 2, 2009

Hope for patients with type 2 diabetes

A new Saint Louis University research suggests that individuals with type 2 diabetes and coronary artery disease have a more favorable prognosis when properly managed with medical care. The BARI 2D trial found significant improvements in treatment outcomes for patients receiving intensive medical therapy or bypass surgery.

Ecstasy use may lead to sleep apnea

A recent study by Johns Hopkins scientists suggests that repeated ecstasy use significantly raises the risk of developing sleep apnea in otherwise healthy young adults. The researchers found that the more participants had used MDMA in the past, the more severe their apnea was likely to be.

SourceJohns Hopkins Medicine·JournalNeurology·DateDec 2, 2009

Distrust of men doesn't stall low-income mothers' romantic unions

Despite general distrust of men, low-income mothers in a study found they can form trusting relationships by compartmentalizing or suspending their trust behaviors. However, these alternative forms of trust often lead to unhealthy partnerships with serious implications for women and their children.

SourceWiley·JournalJournal of Marriage and Family·DateDec 2, 2009

Brandeis studies evaluate visionary approach to improving eyesight

A novel scleral lens has been shown to improve vision and quality of life for patients with severe cornea or ocular surface disease. The Boston Ocular Surface Prosthesis (BOS-P) was found to be clinically beneficial in a study conducted by Brandeis University researchers, who assessed 69 patients before and after fitting them with the ...

SourceBrandeis University·JournalAmerican Journal of Ophthalmology·DateDec 2, 2009

Why we outlive our ape ancestors

Humans uniquely susceptible to aging diseases due to genetic adaptations to inflammation and high cholesterol diets. The 'meat-adaptive gene' ApoE3 may contribute to human lifespan, while ApoE4 impairs neuronal development and shortens lifespan by four years.

SourceUniversity of Southern California·JournalProceedings of the National Academy of Sciences·DateDec 2, 2009

Scent signals stop incest in lemurs

Researchers identified scent secretions in lemurs that encode markers of relatedness, preventing inbreeding and facilitating nepotism. The study reveals a complex olfactory mechanism allowing lemurs to recognize family ties and avoid unfamiliar kin.

SourceBMC (BioMed Central)·JournalBMC Evolutionary Biology·DateDec 2, 2009

A cell's 'cap' of bundled fibers could yield clues to disease

Researchers at Johns Hopkins University discovered a fibrous structure that holds the nucleus in place, which could provide clues to diseases such as cancer, muscular dystrophy, and progeria. The perinuclear actin cap is a domed structure of bundled filaments that sits above the nucleus, controlling its shape and potentially affecting ...

SourceJohns Hopkins University·JournalProceedings of the National Academy of Sciences·DateDec 2, 2009

Newly explored bacteria reveal some huge RNA surprises

Yale researchers discovered exceptionally large RNAs in previously unstudied bacteria, suggesting many more remain to be found as scientists explore more bacterial species. These RNAs rank among the largest and most sophisticated yet discovered, potentially acting like enzymes or carrying out complex functions.

SourceYale University·JournalNature·DateDec 2, 2009

Hope for men with nonobstructive infertility

A recent study published in Reproductive Biology and Endocrinology found that sperm from men with non-obstructive azoospermia are equally capable of producing embryos through intracytoplasmic sperm injection (ICSI). The study also showed that there were no significant differences in implantation rates or clinical pregnancy rates betwee...

SourceBMC (BioMed Central)·JournalReproductive Biology and Endocrinology·DateDec 2, 2009

2009 winner of the Manpei Suzuki international prize for diabetes research announced

Dr. Donald F. Steiner has made significant contributions to understanding insulin secretion and glucose metabolism, including the discovery of proinsulin and clinical applications of C-peptide radioimmunoassay. He will receive a Certificate of Honor and US$150,000 in recognition of his outstanding research achievements.