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Science News for May 31, 2011


Good guy or bad guy? Diagnosing stomach disease in pet reptiles

A DNA-based test can identify whether a cryptosporidium is of mammalian or snake origin, with prevalence figures revealing widespread infection in popular pets like corn snakes and leopard geckos. Reptile owners must be aware of the risk of cross-species infection and the importance of regular testing to prevent the spread of disease.

SourceUniversity of Veterinary Medicine -- Vienna·JournalJournal of Veterinary Diagnostic Investigation·DateMay 31, 2011

Scientists crack the spiders' web code

Researchers observed that spiders increase decorating activity in response to severe web damage but not light damage, suggesting the purpose of silk decorations is to make webs more visible to predators. This study helps unravel the mystery of why orb-weaving spiders decorate their webs.

SourceUniversity of Melbourne·JournalBehavioral Ecology and Sociobiology·DateMay 31, 2011

People with mental illness have higher mortality after heart attacks but receive inferior care

Research reveals that individuals with significant mental ill health experience higher than expected mortality rates following acute coronary events such as heart attacks. The study found that these patients receive inferior care, including fewer life-saving interventions and lower rates of essential coronary care procedures.

SourceUniversity of Leicester·JournalThe British Journal of Psychiatry·DateMay 31, 2011

Big city holds empty promise for bats

Researchers at the University of Calgary discovered that urban life is far from ideal for Prairie bats, contrary to expectations. Despite the presence of roosts and food sources in cities, bat populations exhibit poor body condition, reproductive rates, and juvenile survival.

SourceUniversity of Calgary·JournalPLOS ONE·DateMay 31, 2011

Searching the web for dengue

A study shows that web search queries can be used to detect and monitor outbreaks of dengue, a mosquito-borne virus, in near real-time. The research team developed an online tool that tracks epidemics using Google search results, which was found to be a viable source of information for early detection and monitoring.

SourceBoston Children's Hospital·JournalPLOS Neglected Tropical Diseases·DateMay 31, 2011

Noninvasive wireless near-infrared device provides reliable diagnosis of bladder dysfunction

A new non-invasive wireless near-infrared device has been shown to be as reliable as current invasive tests in determining bladder disease. The device uses light shone through the skin to monitor changes in bladder physiology, revealing consistent patterns of normal oxygen availability and blood supply in healthy subjects during urinat...

SourceUniversity of British Columbia·JournalInternational Journal of Spectroscopy·DateMay 31, 2011

Similarities cause protein misfolding

Studies using single-molecule fluorescence reveal that neighboring protein domains with similar amino acid sequences are more prone to misfold, potentially leading to neurodegenerative diseases. This finding suggests that proteins have evolved to limit similarity between domains to prevent misfolding and maintain functionality.

SourceUniversity of Zurich·JournalNature·DateMay 31, 2011

Online advertising waters down impact of offline ad bans

A study by University of Toronto researchers found that online advertising can reduce the effectiveness of offline ad bans on certain products, such as alcohol and tobacco. The study showed that when consumers with limited knowledge of a product were exposed to online ads, it made online ads more effective substitutes for offline ads.

SourceUniversity of Toronto, Rotman School of Management·JournalJournal of Marketing Research·DateMay 31, 2011

PLoS NTDs press release -- cholera in Haiti

A coalition of researchers and policymakers argue that a universal vaccination campaign is essential to ending the crisis. The authors recommend increasing vaccine availability through advance purchase commitments and scaling up efforts to prevent similar shortages during future outbreaks.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateMay 31, 2011

Drug can reverse overgrown hearts to help prevent heart failure, UT Southwestern researchers find

Researchers at UT Southwestern Medical Center have found that a promising cancer treatment drug can restore function of a heart en route to failure from high blood pressure. The drug has been shown to reverse the harmful effects of autophagy in heart muscle cells of mice, leading to regression of heart disease.

SourceUT Southwestern Medical Center·JournalProceedings of the National Academy of Sciences·DateMay 31, 2011

Why childhood obesity? It's so much more than what kids eat

The study examines various factors that contribute to childhood obesity, such as genetic predisposition, breastfeeding, TV watching, neighborhood environment, and cultural influences. The researchers have collected data from approximately 400 families and are beginning a third wave of data collection.

Embargoed news from Annals of Internal Medicine

A new article suggests changes to compassionate release guidelines to address medical-related flaws, including the development of standardized guidelines and the assignment of advocates to help navigate the system. The authors propose palliative care for critically-ill prisoners awaiting decision on compassionate release or approval.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateMay 31, 2011

The alcohol industry needs more scrutiny

A new editorial in PLoS Medicine calls for greater scrutiny of the alcohol industry's impact on health research, government policy, and public perceptions. The authors highlight questionable behavior by the industry, including promoting health benefits while downplaying harms, and suggest stricter regulation to protect public health.

SourcePLOS·JournalPLOS Medicine·DateMay 31, 2011

Harvard scientists 'see' the early cellular cause of dry eye disease for the first time

Researchers discovered that natural killer cells contribute to dry eye disease development by inducing inflammatory responses in ocular surface and lymph nodes. This breakthrough offers hope for new treatments targeting the cellular cause of the disease, improving quality of life for millions affected.

SourceFederation of American Societies for Experimental Biology·JournalJournal of Leukocyte Biology·DateMay 31, 2011

California scientists discover how vitamins and minerals may prevent age-related diseases

A new study published in the FASEB Journal reveals how moderate selenium and vitamin K deficiency can lead to age-related diseases. Researchers found that damaging effects accumulate over time due to vitamin and mineral loss, highlighting the need for public health initiatives to address modest deficiencies.