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Science News for May 7, 2009


4-in-1

Researchers have developed a four-in-one agent that can detect, target, and disable tumor cells while also making them visible through MRI and microscopic imaging. The agent uses siRNAs to suppress specific genes in cancer cells, providing a new approach to targeted gene suppression in cancer treatment.

SourceWiley·JournalAngewandte Chemie·DateMay 7, 2009

Too much of a good thing

Researchers at Temple University discovered that women who perceive their bodies as ideal, even if they are obese or overweight, can still experience health issues. The study found that African-American and Hispanic women underestimated their current body size more often than white women.

SourceTemple University·JournalAmerican Journal of Obstetrics and Gynecology·DateMay 7, 2009

Transmission of MRSA and Clostridium difficile through dogs

A study found that pet therapy dogs can transfer MRSA and C. difficile to patients through contact, highlighting the need for hand sanitation procedures among both handlers and animals. The transmission of these pathogens poses a new avenue for spread, potentially impacting influenza and norovirus as well.

SourceElsevier·JournalJournal of Hospital Infection·DateMay 7, 2009

Patients with mild to moderate OSA may benefit from exercise

A recent study suggests that exercises can improve symptoms of mild to moderate obstructive sleep apnea (OSA) by promoting remodeling of the upper airways. After three months, patients in the exercise group showed significant improvements in oxygen saturation levels, snoring symptoms, and quality of sleep scores.

SourceAmerican Thoracic Society·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateMay 7, 2009

New look at Facebook and grades

Researchers from Northwestern University found no evidence that Facebook use correlates with lower academic achievement. Instead, they suggest that the impact of social networking sites on students depends on how they are used, with cultivating relationships potentially leading to positive outcomes.

SourceNorthwestern University·JournalFirst Monday·DateMay 7, 2009

Global monsoon drives long-term carbon cycles in the ocean

A new review reveals that global monsoons have been driving the long-term cyclicity of oceanic carbon reservoirs for at least 600 million years. The study found a 400,000-year cycle related to the 'long eccentricity' of Earth's orbit, which is linked to changes in oceanic carbon reservoirs and has implications for climate prediction.

SourceScience China Press·JournalChinese Science Bulletin·DateMay 7, 2009

Creating the astro-comb to locate Earth-like planets

Researchers at Harvard-Smithsonian Center for Astrophysics have created an 'astro-comb' to help detect lighter planets around distant stars. The technique sharpens spectroscopy, enabling more accurate pinpointing of planet locations and opening possibilities for detecting more Earth-like planets.

SourceOptica·DateMay 7, 2009

Is dephytinization from infant cereals beneficial to the nutrition absorption?

The study found that dephytinization significantly increased mineral cell uptake efficiency, retention, and transport efficiency of iron and zinc. Calcium bioavailability also showed a significant increase after phytate removal from most samples. This research provides valuable insights for infant nutrition and mineral absorption.

SourceWorld Journal of Gastroenterology·JournalWorld Journal of Gastroenterology·DateMay 7, 2009

'Gecko vision': Key to the multifocal contact lens of the future?

Researchers have discovered a series of distinct concentric zones in gecko eyes that enable exceptional night vision, leading to potential advancements in camera technology and multifocal contact lenses. The study, published in the Journal of Vision, also introduces a new method for gathering optical data from live animals without harm.

OHSU researchers study the idling brain

Researchers use MRI to identify brain regions that activate while at rest, potentially leading to new diagnostic tools for ADHD and other mental health disorders. By analyzing brain activity in typically developing subjects versus those with disorders, the team aims to pinpoint distinct functional differences.

SourceOregon Health & Science University·JournalPLOS Computational Biology·DateMay 7, 2009

Why silkworms find mulberries attractive

A new study reveals the source of silkworms' attraction to mulberry leaves is a jasmine-scented chemical called cis-jasmone. The potent attractant triggers a highly tuned olfactory receptor in the silkworms' antennae, guiding them towards the food source.

SourceCell Press·JournalCurrent Biology·DateMay 7, 2009