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Science News Archive July 2014 - Page 19


Page 19 of 34

Screening costs increased in older women without changing detection rates of ESBC

A new study published in JNCI: Journal of the National Cancer Institute found that breast cancer screening costs increased substantially among older women between 2001 and 2009, despite unchanged detection rates of early-stage tumors. The study analyzed data from the SEER-Medicare linked database and found a significant increase in scr...

SourceOxford University Press USA·JournalJNCI Journal of the National Cancer Institute·DateJul 16, 2014

Whale shark fringe migration

A 16-year study reveals that the Azore islands are becoming a crucial part of the Atlantic whale shark's habitat due to rising ocean temperatures. The researchers found that increased sightings were correlated with higher water temperatures and seafloor features, such as slopes and seamounts.

SourcePLOS·JournalPLOS ONE·DateJul 16, 2014

Expert guidance on hand hygiene in healthcare settings

The guidance emphasizes best practices for implementing and optimizing hand hygiene programs, including using soap and alcohol-based hand rubs, stressin' hand hygiene at critical moments, and empowering healthcare personnel. The updated evidence-based recommendations aim to clarify the state of the science behind recommended hand hygie...

SourceSociety for Healthcare Epidemiology of America·JournalInfection Control and Hospital Epidemiology·DateJul 16, 2014

Dispersant from Deepwater Horizon spill found to persist in the environment

A new study has found that the dispersant compound DOSS, used in the Deepwater Horizon spill, persists in the environment for up to four years, remaining associated with oil and affecting marine ecosystems. The persistence of DOSS in deep-sea sediments, corals, and sand patties on Gulf beaches indicates a need for further research into...

SourceWoods Hole Oceanographic Institution·JournalEnvironmental Science & Technology Letters·DateJul 16, 2014

Scientists find way to trap, kill malaria parasite

Researchers at Washington University School of Medicine have discovered a potential target for malaria drug development by identifying a key protein involved in the parasite's protein secretion process. Disrupting this protein, heat shock protein 101 (HSP101), prevents the parasite from secreting its proteins into the red blood cell.

SourceWashU Medicine·JournalNature·DateJul 16, 2014

Potassium supplements may increase survival in patients taking diuretics for heart failure

Researchers found that adding potassium supplementation to loop diuretics increases survival rates by 16 percent in patients receiving at least 40 mg/day of furosemide. The benefit is more pronounced with higher diuretic doses. While the study's findings are promising, further independent studies are needed to confirm these results.

Fair cake cutting gets its own algorithm

Mathematician Julius Barbanel and political scientist Steven Brams developed an algorithm to divide goods like cake and land between two people, ensuring equal pieces and no envy. The cut-and-choose method uses probability density functions to determine portions, making it efficient, equitable, and jealousy-free.

SourceSpringer Science+Business Media·JournalThe Mathematical Intelligencer·DateJul 16, 2014

Marginal life expectancy benefit from contralateral prophylactic mastectomy

A recent study published in JNCI: Journal of the National Cancer Institute found that contralateral prophylactic mastectomy (CPM) may confer only a marginal life expectancy benefit depending on the type and stage of cancer. The procedure was more beneficial for younger women and those with stage I and ER-negative breast cancer.

SourceOxford University Press USA·JournalJNCI Journal of the National Cancer Institute·DateJul 16, 2014

Does practice really make perfect?

A meta-analysis of 88 studies on deliberate practice found that it explains 26% of the variance in performance for games, 21% for music, and 18% for sports. While practice improves performance, other personal factors also play a role in predicting success.

SourceRice University·JournalPsychological Science·DateJul 16, 2014

When it comes to food, obese women's learning is impaired

A study by Yale University researchers found that obese women were impaired in learning associations between food cues and rewards, but normal-weight individuals and men did not show the same impairment. This suggests a specific behavioral intervention targeting food-specific learning impairments may be effective in treating obesity.

SourceYale University·JournalCurrent Biology·DateJul 16, 2014

Directly visualizing hydrogen bonds

Chemists have made a breakthrough in visualizing hydrogen bond interactions, which play a key role in biological molecules and pharmaceuticals. Using two-dimensional infrared spectroscopy techniques, researchers directly observed the coordinated vibrations between hydrogen-bonded molecules.

SourceAmerican Institute of Physics·JournalThe Journal of Chemical Physics·DateJul 15, 2014

Genetic testing for alcohol dependence risk in African Americans

A study examined the interest level of over 300 African American adults in genetic testing for alcohol dependence susceptibility, with some expressing concern over privacy and testing methods. The results suggest that more research is needed to address these concerns and establish effective genetic counseling strategies.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalGenetic Testing and Molecular Biomarkers·DateJul 15, 2014

Researchers find organic pollutants not factor in turtle tumor disease

A new study by researchers from NIST and the Hollings Marine Laboratory found that persistent organic pollutants (POPs) are not linked to fibropapillomatosis, a disease causing tumors in green sea turtles. The team detected halogenated phenols in turtle tissues, suggesting these compounds may be coming from algae in their diet.

SourceNational Institute of Standards and Technology (NIST)·JournalEnvironmental Science & Technology·DateJul 15, 2014

Rollout strategy for diagnostic test in India may impact TB

A new mathematical model suggests that implementing Xpert MTB/RIF as part of a more ambitious rollout strategy, including private sector engagement and referral networks, could reduce TB incidence by 14.1% in India. The current narrow implementation strategy is expected to only reduce incidence by 0.2%.

SourcePLOS·JournalPLOS Medicine·DateJul 15, 2014

SLU scientists hit 'delete': Removing regions of shape-shifting protein explains how blood clots

Researchers at Saint Louis University discovered that deleting disordered sections of a protein's structure reveals the molecular mechanism of blood clotting. By crystallizing prothrombin, they found that the deleted version is activated to thrombin faster and provides key information on the mechanism of prothrombin activation.

SourceSaint Louis University·JournalProceedings of the National Academy of Sciences·DateJul 15, 2014

Is it time to lock up those who commit research fraud?

Dr Zulfiqar Bhutta believes that criminal sanctions are necessary to deter research misconduct, citing high rates of scientific misconduct and significant human health consequences. However, Dr Julian Crane argues that criminalization would undermine trust in research and is not an effective deterrent.

SourceBMJ Group·JournalThe BMJ·DateJul 15, 2014

Telecare intervention improves chronic pain

A telephone-delivered telecare intervention improved chronic musculoskeletal pain compared to usual care, with nearly twice as many patients experiencing a 30% reduction in pain score. The intervention was associated with clinically meaningful improvements in pain and treatment satisfaction.

SourceJAMA Network·JournalJAMA·DateJul 15, 2014

Team studies immune response of Asian elephants infected with a human disease

A study by University of Illinois researchers found that TB-infected elephants have different immune responses to the infection compared to those without it. The team developed a new method to detect cytokine mRNA in elephants, which could lead to faster and more accurate diagnosis of tuberculosis in captive elephants.