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Science News Archive May 2011 - Page 4


Page 4 of 28

Cognitive decline incidence higher in Southern stroke belt

A new study published in Annals of Neurology found that residents of the Stroke Belt, a southern region of the US, have a higher incidence of cognitive decline than other regions. The research team believes shared risk factors are to blame and suggests investigating regional patterns contributing to modifiable risk factors.

SourceWiley·JournalAnnals of Neurology·DateMay 26, 2011

Counting on bigger mining returns

A new study developed by McGill Professor Roussos Dimitrakopoulos has created more accurate mine planning models that take into account uncertainty in the supply of minerals. This results in higher return on investment for mining companies while increasing metal production from the same asset.

People with body-image disorders process 'big picture' visual information abnormally

A new UCLA study reveals that individuals with body dysmorphic disorder (BDD) exhibit abnormal brain activity when processing holistic visual elements, such as the overall shape of an object. This finding suggests that BDD patients have general abnormalities in visual processing, which may contribute to the development of the disorder.

SourceUniversity of California - Los Angeles·JournalPsychological Medicine·DateMay 26, 2011

Diabetes can be predicted 7 years before pregnancy with blood sugar and body weight

A Kaiser Permanente study found that women's risk of gestational diabetes mellitus (GDM) can be identified up to seven years before pregnancy based on routine measures of blood sugar and body weight. The study revealed a strong correlation between adverse cardio-metabolic risk factors, including high blood sugar, hypertension, and bein...

SourceKaiser Permanente·JournalAmerican Journal of Obstetrics and Gynecology·DateMay 26, 2011

Estimating landfill gas potential

Research suggests that implementing landfill gas-recovery projects quickly can maximize methane gas retrieval from organic waste. Landfill gas (LFG) has the potential to be used as an alternative fuel, with half the caloric value of natural gas.

SourceInderscience Publishers·JournalInternational Journal of Environment and Waste Management·DateMay 26, 2011

Nuclear radiation affects baby gender

A new study by Hagen Scherb and Kristina Voigt found a significant gender gap in human populations exposed to nuclear radiation, with increases in male births relative to female births. The study reveals a long-term, dose-dependent impact of radiation exposure on human sex odds.

SourceSpringer·JournalEnvironmental Science and Pollution Research·DateMay 26, 2011

Several abstracts on gout reveal true burden of disease and highlight promising new treatments

A pan-European study found gout prevalence highest in the UK and lowest in France, with lower quality of life scores and more comorbidities. New treatments like pegloticase demonstrated long-term efficacy and safety, with up to 90% complete resolution of tophi and improved patient-reported outcomes.

SourceEuropean Alliance of Associations for Rheumatology (EULAR)·JournalAnnals of the Rheumatic Diseases·DateMay 26, 2011

Why caffeine can reduce fertility in women

Research found that caffeine inhibits specialized pacemaker cells in the Fallopian tubes, which coordinate muscle contractions and egg movement. This discovery provides a possible explanation for why women with high caffeine consumption take longer to conceive.

SourceWiley·JournalBritish Journal of Pharmacology·DateMay 26, 2011

8 hours of resistance

Researchers discovered that cancerous cells quickly divide after receiving a growth factor signal because their p53 gene is defective. Healthy cells, on the other hand, wait eight continuous hours before dividing to ensure they receive necessary signals.

SourceWeizmann Institute of Science·JournalMolecular Cell·DateMay 25, 2011

Rethinking extinction

A recent study by McGill biologist Jonathan Davies and colleagues suggests that the criteria for assessing risk of extinction in plants should be revised. The researchers found that species with small population sizes, even if not limited to a specific geographical range, can also be at high risk of extinction due to their youth.

SourceMcGill University·JournalPLOS Biology·DateMay 25, 2011

Immune system release valve

Researchers discovered that caspase-8, an enzyme previously thought to only prevent inflammation through apoptosis, can also control inflammation by destroying a protein called RIP1. This new mechanism could lead to the development of effective therapies for inflammatory disorders like rheumatoid arthritis and inflammatory bowel disease.

SourceWeizmann Institute of Science·JournalImmunity·DateMay 25, 2011

Monkeys can play Monday morning quarterback too

A Yale University study found that monkeys can imagine different outcomes, a process linked to the brain's prefrontal cortex. This discovery may help researchers develop treatments for diseases such as depression and schizophrenia, which often involve obsessive thoughts about past choices.

SourceYale University·JournalNeuron·DateMay 25, 2011