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Science News for April 3, 2012


New hormone for lowering blood sugar

Researchers have discovered a hormone that can be produced by fat stem cells to lower blood sugar levels and improve metabolism. The hormone appears to bypass the need for insulin, sending glucose out of the bloodstream and into muscle cells.

SourceCell Press·JournalCell Metabolism·DateApr 3, 2012

Arteries under pressure early on

Researchers found that small arteries showed signs of artery damage and reduced compliance after just six weeks on a high-fat diet, while large arteries remained unaffected. This early stage of damage may be the first step in developing high blood pressure.

SourceSpringer·JournalJournal of Cardiovascular Translational Research·DateApr 3, 2012

Serious complications after esophageal surgery cause lasting health problems in long-term survivors

A new study from Karolinska Institutet found that patients who suffered serious post-operative complications after esophageal cancer surgery had more symptoms of breathlessness, fatigue and eating problems, with impairments lasting for five years. Patients require long-term monitoring to identify and target any problems quickly.

SourceKarolinska Institutet·JournalJournal of Clinical Oncology·DateApr 3, 2012

New compound targets key mechanism behind lymphoma

Researchers at Fox Chase Cancer Center have identified a new compound that targets a key pathway in lymphoma, suggesting it could be the first to hit this critical mechanism. The study found that certain types of lymphoma cells are more vulnerable to the effects of the compound, making them potential candidates for early clinical trials.

Pollen can protect mahogany from extinction

Researchers from the University of Adelaide have discovered that pollen diversity is limited in mahogany forests due to extensive exploitation, affecting seedling growth and forest re-growth rates. The study suggests that collecting high-quality seeds from healthy trees could improve restoration efforts.

SourceUniversity of Adelaide·JournalEcology Letters·DateApr 3, 2012

Are we really a nation of animal lovers?

A new study by the University of Bristol estimated that over 260,000 cats and dogs entered UK rescue organizations in 2009. The majority of these animals were not rehomed but instead cared for until space became available, revealing a significant need for animal adoption and welfare support.

SourceUniversity of Bristol·JournalVeterinary Record·DateApr 3, 2012

Algae biofuels: the wave of the future

Researchers at Virginia Tech have assembled the draft genome of marine algae Nannochloropis gaditana to discover optimal species for producing biodiesel fuel. Genetic modification reveals the algae's potential for industrial-scale biofuel production, a game-changer in fuel research and production.

SourceVirginia Tech·JournalNature Communications·DateApr 3, 2012

Love it or leave it?

A recent study from Concordia University found that employees who feel obligated to stay with their employer are more likely to experience emotional exhaustion. This type of commitment can lead to feelings of indebtedness and loss of autonomy, ultimately contributing to turnover.

SourceConcordia University·JournalHuman Relations·DateApr 3, 2012

'Positive stress' helps protect eye from glaucoma

Scientists at Washington University School of Medicine have devised a treatment that prevents optic nerve injury in glaucoma by exposing mice to low levels of oxygen. The study found that preconditioning induced tolerance protects against neurodegenerative disease, with mice losing only 3% of retinal ganglion cell bodies after 10 weeks.

SourceWashU Medicine·JournalMolecular Medicine·DateApr 3, 2012

New immune defense enzyme discovered

Scientists at Max Planck Institute of Neurobiology have discovered a new serine protease, neutrophil serine protease 4 (NSP4), which forms part of the antibacterial defense arsenal of neutrophil granulocytes. NSP4 could provide a new target for treating diseases involving an overactive immune system.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateApr 3, 2012

How a cancer drug leads to diabetes

Rapamycin, a widely used cancer and transplant drug, leads to diabetes in 15% of patients due to its effect on muscle cells' insulin signal. Researchers discovered that a single transcription factor, YY1, plays a key role in this process. Mice lacking YY1 are protected from diabetes when taking rapamycin.

SourceCell Press·JournalCell Metabolism·DateApr 3, 2012

Is bioenergy expansion harmful to wildlife?

Research suggests that bioenergy crop expansion can harm farmland bird populations like the Skylark. However, integrating small natural areas into landscapes with diverse crop types and maintaining low field sizes may help conserve these species.

SourceWiley·JournalGCB Bioenergy·DateApr 3, 2012

Being ignored online or in person, it's still exclusion

Studies show people experience similar emotional reactions to online and face-to-face exclusion, with participants feeling numb and distancing after being ignored. The findings challenge the assumption that online interactions are less meaningful than in-person ones.

SourcePenn State·JournalComputers in Human Behavior·DateApr 3, 2012

Older subjects who regularly practice Tai Chi found to have better arterial compliance

A study found that experienced Tai Chi practitioners have better arterial compliance and knee muscle strength than their non-practitioner counterparts. This suggests that Tai Chi may be a suitable exercise for older people to improve both cardiovascular function and body strength, without compromising arterial health.

SourceEuropean Society of Cardiology·JournalEuropean Journal of Preventive Cardiology·DateApr 3, 2012

Credible medical evidence of widespread torture in Darfur

A study published in PLOS Medicine analyzed medical records of 325 patients attending a clinic in Darfur, finding consistent evidence of torture, including beatings, gunshot wounds, and sexual assault. The research enhances the credibility of patient claims, but lacks data to corroborate assailant identities or genocidal intent.

SourcePLOS·JournalPLOS Medicine·DateApr 3, 2012

4 works better than 3

A new intranasal flu vaccine with four weakened influenza strains shows promise in protecting children from the flu. The vaccine demonstrates a robust immune response and is well-tolerated, offering improved protection against the flu.

SourceSaint Louis University·JournalThe Pediatric Infectious Disease Journal·DateApr 3, 2012

Strong and consistent evidence supports low-energy-density diets for weight loss

A systematic review of 17 studies found that low-energy-density diets improve weight loss and maintenance in adults. In children and adolescents, moderately strong evidence shows a relationship between higher energy density diets and increased weight. Lowering energy density is associated with enhanced satiety and reduced calorie intake.

SourceElsevier Health Sciences·JournalJournal of the Academy of Nutrition and Dietetics·DateApr 3, 2012

How do cancers become resistant to chemotherapy?

Researchers propose that non-genetic resistance can occur before genetic mutations, changing the approach to designing combination therapies. This new perspective aims to improve outcomes by understanding how cancers evolve and adapt to extreme challenges.

SourcePLOS·JournalPLOS Biology·DateApr 3, 2012