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Science News for November 24, 2014


New treatments for cancer, diabetes, and heart disease -- you may have a pig to thank

Researchers use genetically engineered pig models to study human diseases and identify new drug targets for cancer, cardiovascular diseases, diabetes, neurodegenerative diseases, ophthalmology, and xenotransplantation. These models enable the development of novel cell therapies to restore diseased tissues and organs.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalBioResearch Open Access·DateNov 24, 2014

Starting treatment soon after HIV infection improves immune health, study finds

A new study suggests that starting HIV treatment within a year of seroconversion can improve immune health by increasing CD4+ T-cell count. Researchers found that an HIV-infected person's CD4+ T-cell count is more likely to return to normal if treatment starts within a year and at a CD4+ T-cell count of 500 or more.

Scientists do glass a solid -- with new theory on how it transitions from a liquid

Researchers propose a new theoretical framework to explain the transition of colloidal glasses from liquids to solids, highlighting the role of crowding effects and weak spots in the material. This work has significant implications for our understanding of glass behavior and its applications in consumer products and medical research.

SourceNew York University·JournalProceedings of the National Academy of Sciences·DateNov 24, 2014

Can stress management help save honeybees?

Honeybee populations are under stress due to various factors, leading to susceptibility to diseases. Researchers suggest that managing stress and improving nutrition could help improve bee immunity and health. They call for more basic science to understand the underlying immune responses and molecular mechanisms involved.

SourceCell Press·JournalTrends in Parasitology·DateNov 24, 2014

New method to determine antibiotic resistance fast

Researchers have created a new method to quickly identify bacteria causing infections and determine antibiotic resistance, which could lead to timely treatment and reduced antibiotic use. The innovative approach enables rapid identification of bacterial species and resistance patterns in under four hours.

SourceUppsala University·JournalJournal of Clinical Microbiology·DateNov 24, 2014

End to end 5G for super, superfast mobile

Researchers are exploring software-defined cellular networking to provide next-generation mobile broadband with speeds of up to 10 Gbits/s. The proposed end-to-end architecture offers flexibility, scalability, agility, and efficiency, while overcoming bandwidth shortages and improving quality of service.

SourceInderscience Publishers·JournalInternational Journal of Communication Networks and Distributed Systems·DateNov 24, 2014

The living, breathing ocean

Researchers find that climate change may affect the ratio of oxygen consumed to phosphorus released during organic matter respiration in the subsurface ocean. This shift could lead to more carbon being stored in the ocean, potentially offsetting the slowdown of the ocean's uptake of carbon dioxide from the atmosphere.

SourceUniversity of California - Santa Barbara·JournalNature Geoscience·DateNov 24, 2014

Football players found to have brain damage from mild 'unreported' concussions

A new MRI diagnostic approach has identified significant damage to the blood-brain barrier of professional football players following unreported trauma or mild concussions. The study showed that 40% of examined football players with unreported concussions had evidence of 'leaky BBB' compared to 8.3% of control athletes.

Ambulance risk

A new study by Harvard researchers found that advanced life support ambulances, which use sophisticated gear and staffed with highly trained paramedics, do not save lives but rather increase the risk of death compared to basic life support ambulances. BLS patients were nearly 50% more likely to survive than ALS patients at 90 days.

SourceHarvard Medical School·JournalJAMA Internal Medicine·DateNov 24, 2014

Narrow time window exists to start HIV therapy, study shows

Research shows that starting HIV therapy soon after infection significantly reduces the risk of developing AIDS and improves immune function, particularly when treatment is initiated within 12 months of seroconversion. A normal CD4+ T-cell count above 800 cells per cubic millimeter is crucial for reconstituting immune-fighting cells.

Experience with family verbal conflict as a child can help in stressful situations as an adult

A recent study found that individuals who experienced intense verbal aggression as children are more resilient to conflict as adults. The researchers measured cortisol levels in saliva samples from 50 romantically involved couples and found a weakened physiological stress response for those with higher childhood exposure.

SourceInternational Communication Association·JournalHuman Communication Research·DateNov 24, 2014

How does the brain react to virtual reality? Study by UCLA neuroscientists provides answer

A study published in Nature Neuroscience found that the hippocampus, a region involved in spatial learning and memory, reacts differently to virtual reality than it does to real-world environments. In the virtual world, hippocampal neurons fire randomly, whereas in the real world, they process activity with precision.

SourceUniversity of California - Los Angeles·JournalNature Neuroscience·DateNov 24, 2014

Study finds most older adults qualify for statin therapy under new cholesterol guidelines

The American College of Cardiology and American Heart Association guidelines now recommend statin therapy for individuals with an elevated estimated risk of a heart attack or stroke in the next 10 years. A study found that 97% of adults aged 66-75 qualify for statin therapy, with 100% of men in this age group being eligible.

SourceMinneapolis Heart Institute Foundation·JournalJAMA Internal Medicine·DateNov 24, 2014

Toxin targets discovered

Research identifies specific glycans on cell surfaces as key targets for bacterial toxins, offering new avenues for blocking toxin action and developing novel treatments. The discovery has major implications for the treatment of diseases caused by bacterial pathogens such as Streptococcus pneumoniae and group A streptococci.

SourceGriffith University·JournalProceedings of the National Academy of Sciences·DateNov 24, 2014

El Niño stunts children's growth in Peru

A study published in BMC found that children born during and after the 1997-98 El Niño event had lower height-for-age and lean mass, indicating chronic malnutrition. The researchers warn that climate change may increase the frequency of El Niño episodes, posing a significant risk to future generations.

SourceBMC (BioMed Central)·JournalClimate Change Responses·DateNov 24, 2014

News from Annals of Internal Medicine Supplement

The US Preventive Services Task Force concludes that current evidence is insufficient to assess the benefits and harms of routine screening for vitamin D deficiency. Researchers found no direct evidence on the effects of screening versus no screening, but treating patients with low serum levels may help prevent adverse outcomes.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateNov 24, 2014

Wireless electronic implants stop staph, then dissolve

Researchers at Tufts University have developed a resorbable electronic implant that eliminates bacterial infection by delivering heat to infected tissue via wireless signals. The devices were found to be safe and effective in mice, dissolving completely after 15 days without causing harm.

SourceTufts University·JournalProceedings of the National Academy of Sciences·DateNov 24, 2014

Two studies, 2 editorials put focus on school breakfasts, lunches

Two studies published in JAMA Pediatrics examine the impact of school breakfast programs on children's eating habits and academic performance. One study found that schools offering Breakfast in the Classroom (BIC) had higher participation in the national school breakfast program and attendance, but no differences in math or reading ach...

SourceJAMA Network·JournalJAMA Pediatrics·DateNov 24, 2014

Study finds way to conserve soil and water in world's driest wheat region

Researchers at Washington State University identified summer fallow management practices that can help farmers conserve soil, prevent sky-darkening dust storms, and improve air quality. Undercutter-tillage or no-till fallow systems were found to be the most effective options for reducing wind erosion in the Horse Heaven Hills region.

SourceWashington State University·JournalSoil Science Society of America Journal·DateNov 24, 2014

Preconception care for diabetic women could potentially save $5.5 billion

Researchers estimate that universal preconception care for pregnant women with diabetes can avert an estimated $5.5 billion in health expenditures and lost employment productivity over their children's lifetimes. Effective care could also help mitigate significant complications such as preterm deliveries, birth defects, and perinatal d...

SourceElsevier Health Sciences·JournalAmerican Journal of Obstetrics and Gynecology·DateNov 24, 2014

New volume documents the science at the legendary snowmastodon fossil site in Colorado

The Snowmastodon Project Science Volume provides a new benchmark for understanding climate change in the American West, revealing dramatic ecosystems changes in response to climate shifts. The nearly continuous 85,000-year time span of the site offers the best-known record of life and climate at high elevation anywhere in North America.

SourceDenver Museum of Nature & Science·JournalQuaternary Science Reviews·DateNov 24, 2014

Pain and itch in a dish

Researchers at Scripps Research Institute have developed a method to convert human skin cells into sensory neurons, allowing for the study of pain and itch in a laboratory setting. This breakthrough enables the examination of neurodegenerative diseases such as Friedreich's ataxia and the testing of potential therapies.

SourceScripps Research Institute·JournalNature Neuroscience·DateNov 24, 2014

Educating on sickle cell risk

Sickle cell disease carriers in sub-Saharan Africa require aggressive public health education to raise awareness of the risks of having children with the disease. The disorder causes significant physical and emotional challenges, as well as potential life-threatening complications.

SourceInderscience Publishers·JournalInternational Journal of Medical Engineering and Informatics·DateNov 24, 2014

Mimics do not substitute for the 'real thing' for bomb-sniffing dogs

Researchers at Indiana University-Purdue University Indianapolis found that bomb-sniffing dogs trained on pseudo-explosives could not reliably detect real explosives and vice versa. The study suggests that the exceptional sensitivity of a dog's nose and its temperament cannot be replicated with pseudo-explosive training.

SourceSpringer·JournalAnalytical and Bioanalytical Chemistry·DateNov 24, 2014

Pain in a dish

Researchers at Harvard University successfully converted mouse and human skin cells into pain sensing neurons that respond to various stimuli, including acute and inflammatory pain. The 'disease in a dish' model may lead to improved drug development for chronic pain treatment.

SourceHarvard University·JournalNature Neuroscience·DateNov 24, 2014

Cooling with the coldest matter in the world

Researchers cool membrane vibrations to less than 1 degree above absolute zero, opening up possibilities for novel studies of quantum physics and precision measurement devices. The technique harnesses the unique features of ultracold atomic gases, enabling fundamental quantum physics experiments with macroscopic mechanical systems.

SourceUniversity of Basel·JournalNature Nanotechnology·DateNov 24, 2014

Cell's skeleton is never still

Researchers developed computer models that match experimental results, explaining the dynamic processes behind essential cell components. Microtubule stability is crucial for cell survival, and the study provides new insights into how cells maintain or dismantle these structures.

SourceRice University·JournalThe Journal of Physical Chemistry B·DateNov 24, 2014

Boy moms more social in chimpanzees

Research on Tanzanian chimpanzees reveals that the mothers of sons are 25% more social than those of daughters. They spend more time with other adults and associate with more kin, which helps their young males develop social skills. This finding suggests a potential link between early social exposure and gender-typical behavior in humans.

SourceDuke University·JournalProceedings of the National Academy of Sciences·DateNov 24, 2014

Avoiding ecosystem collapse

Three studies published in Philosophical Transactions of the Royal Society Biological Science hold promise for resource managers to predict and avoid ecosystem collapse. Successful management depends on consistent monitoring, incorporation of tipping points data into actions, and local-scale management.

SourceStanford University·JournalPhilosophical Transactions of the Royal Society of London·DateNov 24, 2014