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Science News Archive February 2013


Page 20 of 28

Tumor blood vessels prevent the spread of cancer cells

Researchers at Karolinska Institutet discovered that a deficiency in the endoglin protein weakens tumor blood vessels, allowing cancer cells to spread more easily. This finding suggests that strengthening blood vessel protective function may prevent cancer spread.

Yearly rise in emergency admissions for kids in England since 2003

Research reveals a steady increase in UK children's emergency hospital admissions since 2003, primarily driven by common infections. The trend shows a particularly significant rise among under-5s, with projected population increases suggesting up to 230,000 more admissions by 2020.

1-2 punch strategy against bacteria and cancer

Researchers at Rice University propose combining synthetic and natural toxins to create a 'one-two punch' therapy against cancer and drug-resistant bacteria, potentially reducing side effects and preventing resistance. The approach targets the unique membranes of both cancer cells and Gram-negative bacteria.

Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

'Laborist' obstetrical care improves pregnancy outcomes

The study found that using the laborist model resulted in significant reductions in labor inductions (15% fewer), maternal length of stay (0.09 days less), and preterm delivery (17%). This improvement in pregnancy outcomes is attributed to continuous coverage without competing duties.

Comprehensive maternal hemorrhage protocols improve patient safety

Researchers found that implementing a standardized comprehensive maternal hemorrhage protocol significantly reduced blood product utilization, resulting in a 45% reduction in puerperal hysterectomy. The study also showed a significant decrease in morbidity, with reductions in red blood cells, platelets, and cryoprecipitate usage.

Kestrel 3000 Pocket Weather Meter

Kestrel 3000 Pocket Weather Meter measures wind, temperature, and humidity in real time for site assessments, aviation checks, and safety briefings.

Computerized 'Rosetta Stone' reconstructs ancient languages

Researchers have developed a sophisticated tool to reconstruct protolanguages, the precursors of modern languages, with high accuracy. The system analyzes sound changes at the phonetic level and has been applied to 142,000 word forms from 637 Austronesian languages, producing results that are 85% accurate compared to manual reconstruct...

Newly identified natural protein blocks HIV, other deadly viruses

Researchers at UCLA have identified a natural protein called cholesterol-25-hydroxylase (CH25H) that can block the entry of HIV and other deadly viruses into cells. The protein, which is activated by interferon, produces an oxysterol that can permeate cell walls and inhibit viral growth.

Meta Quest 3 512GB

Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.

Isotopic data show farming arrived in Europe with migrants

New isotopic data shows that Neolithic farmers introduced agriculture to Central Europe from the Near East through colonizers. This discovery sheds light on the spread of farming across Europe and challenges previous theories about its adoption.

Better outcome for frozen embryo replacement vs IVF

A study found that perinatal outcomes of frozen/thawed embryo replacement (FER) were better than those of fresh in vitro fertilization (IVF), but poorer than the general population. FER resulted in higher rates of low birth weight, preterm birth, and macrosomia compared to spontaneous conceptions.

CalDigit TS4 Thunderbolt 4 Dock

CalDigit TS4 Thunderbolt 4 Dock simplifies serious desks with 18 ports for high-speed storage, monitors, and instruments across Mac and PC setups.

Differences in obstetric outcomes and care related to race and ethnicity

Researchers found racial and ethnic disparities in adverse obstetric outcomes, including postpartum hemorrhage, peripartum infection, and severe perineal laceration. The study also revealed differences in types of intrapartum care, with certain groups receiving more intensive or less invasive treatments.

Researchers discover 'Achilles' heel' for lymphoid leukemia

Scientists have identified a molecule called Gfi1 that represents the disease's Achilles' heel and could be targeted to develop a new approach. This discovery has direct implications for the treatment of acute lymphoblastic leukemia, a cancer of the bone marrow and blood that progresses rapidly.

USC researchers find possible genetic clues to organ development, birth defects

Researchers at USC have identified two molecular signaling pathways that control the formation of head and face structures, shedding light on certain birth defects. The study used time-lapse photography to study organ development at the single-cell level in zebrafish embryos, providing insights into human health and disease.

Davis Instruments Vantage Pro2 Weather Station

Davis Instruments Vantage Pro2 Weather Station offers research-grade local weather data for networked stations, campuses, and community observatories.

AGU Journal Highlights -- Feb. 11, 2013

Recent AGU journal publications explore the global climatology of explosive cyclones and their impact on U.S. biomes under climate change. A study found that extreme precipitation patterns decrease vegetative productivity by 20% in some regions, while others show neutral or negative effects.

Garmin GPSMAP 67i with inReach

Garmin GPSMAP 67i with inReach provides rugged GNSS navigation, satellite messaging, and SOS for backcountry geology and climate field teams.

Visualizing biological networks in 4-D

Scientists at Caltech have developed a unique microscope that captures the motion of DNA structures in both space and time, allowing them to directly measure stiffness and map its variation. This breakthrough technique has far-reaching implications for understanding biological nanomaterials and their properties.

Online or off, bullying proves harmful

A Michigan State University study suggests that physical bullying, cyberbullying, and mobile phone bullying have similar effects on students' behavior and suicidal thoughts. Parents and policymakers are urged to consider both online and offline forms of bullying when creating anti-bullying policies.

GoPro HERO13 Black

GoPro HERO13 Black records stabilized 5.3K video for instrument deployments, field notes, and outreach, even in harsh weather and underwater conditions.

ADHD symptoms persist for most young children despite treatment

A federally funded study found that nearly 90% of preschoolers with ADHD continue to struggle with symptoms six years after diagnosis, regardless of medication use. Children with co-occurring oppositional defiant disorder or conduct disorder were more likely to experience persistent symptoms.

Strokes associated with surgery can be devastating

Prompt identification and treatment of perioperative strokes can significantly improve neurologic outcomes. The article reviews management options for perioperative stroke, including blood thinners, clot-busting drugs, mechanical devices, ultrasound, and hemicraniectomy.

Community health workers help type 2 diabetes care

A randomized controlled trial found that community health workers led by a nurse case-manager improved blood sugar levels among Samoans with type 2 diabetes. The intervention, which included culturally tailored education and home visits, resulted in clinically significant improvements in HbA1c levels.

SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

Prostate-specific antigen screening: Values and techniques shape decisions

A study published in JAMA Internal Medicine found that men's decisions to undergo prostate-specific antigen (PSA) screening are influenced by how information is presented. The researchers discovered that men who were given a balance sheet with relevant features of PSA screening were more likely to choose the screening option, while tho...

Protein 'filmed' while unfolding at atomic resolution

Scientists have successfully observed protein unfolding at atomic resolution, revealing the intermediate forms that occur during folding. The study may contribute to a better understanding of how proteins misfold in diseases like Alzheimer's, Parkinson's, and Huntington's Chorea.

Tree die-off triggered by hotter temperatures

A recent study found that hotter temperatures triggered a widespread die-off of Colorado trembling aspen trees, with the drought from 2000-2003 exacerbating the damage. The researchers used oxygen isotope analysis to determine that summer temperatures were the key factor in drying out surface soil and stressing the trees' water-transpo...

Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

Synthetic circuit allows dialing gene expression up or down in human cells

Researchers at the University of Texas M.D. Anderson Cancer Center have developed a synthetic gene circuit that can dial up or down gene expression in human cells, enabling refined research for drug resistance and cancer treatment. The circuit's precision will allow scientists to test the boundaries of genes known to confer resistance ...

Researchers find Asian needle ants displacing other aggressive invaders

Researchers found Asian needle ant successfully displacing Argentine ants in an urban environment, suggesting it may be the next dominant invasive species. The Asian needle ant's ability to tolerate cooler temperatures gives it a head start over Argentine ants, allowing it to reproduce and build nests earlier.

Birds evolved ultraviolet vision several times

Researchers sequenced genes responsible for light-sensitive pigment in 40 bird species, revealing at least 14 shifts between violet and ultraviolet color vision. This evolution is driven by single nucleotide changes in DNA, resulting in unique visual adaptations among birds.

Apple Watch Series 11 (GPS, 46mm)

Apple Watch Series 11 (GPS, 46mm) tracks health metrics and safety alerts during long observing sessions, fieldwork, and remote expeditions.

New genes for short-sightedness identified

An international team of scientists has discovered 24 new genes associated with refractive errors and myopia, a major cause of blindness worldwide. The findings could lead to new treatments or prevention strategies for this condition.

Old drug may point the way to new treatments for diabetes and obesity

A team of researchers at the University of Michigan's Life Sciences Institute has found that amlexanox, an off-patent drug, can reverse obesity, diabetes, and fatty liver in mice. The study suggests that the drug works by inhibiting two genes involved in metabolic balance, leading to increased metabolism and weight loss.

Nikon Monarch 5 8x42 Binoculars

Nikon Monarch 5 8x42 Binoculars deliver bright, sharp views for wildlife surveys, eclipse chases, and quick star-field scans at dark sites.

Comparing mechanical clot removal and standard medical therapy for severe stroke

A new randomized controlled trial compared the effectiveness of mechanical clot removal with standard medical therapy in treating severe strokes. The study, led by Georgetown University Medical Center, found that removing blood clots within eight hours of stroke symptoms improved survival outcomes and reduced disability levels.

Physicians' belief about obesity causes impacts advice and care

A study by Johns Hopkins Bloomberg School of Public Health found that physicians who believe overconsumption of food contributes to obesity are more likely to advise patients to modify nutritional habits. The study analyzed data from 500 US primary care physicians and found a significant correlation between physician beliefs and counse...

Scientists using holiday snaps to identify whale sharks

Researchers successfully identified individual whale sharks in 85% of cases using public photographs, comparable to professional photographer identification rates. The study suggests that citizen-sourced photos can be a valuable tool for tracking whale shark populations and monitoring conservation efforts.

Aranet4 Home CO2 Monitor

Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.

Rooting out recurrent breast cancer

A study published in the Journal of Clinical Investigation found that TGF-β is highly expressed in triple negative breast cancer cells after chemotherapy. In a mouse model, blocking TGF-β prevented tumor recurrence and enhanced chemotherapy action against triple negative breast cancer.

DJI Air 3 (RC-N2)

DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.

New insight on relationship between parents, preschoolers and obesity

A new study from Washington State University finds that mothers' eating habits at the dinner table can significantly impact their preschoolers' obesity risk. The researchers analyzed surveys of low-income African-American and Latino Head Start preschoolers and caregivers, discovering that moms who exhibit high levels of control while f...

New insight into RASopathy-associated lymphatic defects

Researchers used transgenic mice to study the effects of RAS pathway alterations on lymphatic system development. They found that excess ERK activation leads to lymphatic defects in RASopathies, which can be reversed by ERK inhibitor treatment.

Villain stomach bug may have a sweet side

Researchers at Virginia Tech discovered that Helicobacter pylori, a bacterium blamed for health issues like gastritis and gastric cancer, helps balance the stomach's ecosystem and control body weight and glucose tolerance in mice. The findings suggest that H. pylori may provide important metabolic traits required to combat diabetes.

JCI early table of contents for Feb. 8, 2013

Studies reveal that blocking TGF-β can prevent tumor recurrence in mice with triple negative breast cancer. Additionally, targeting specific subsets of immune cells, such as CD8+ regulatory T-cells, may provide a new approach to treating rheumatoid arthritis.

Apple MacBook Pro 14-inch (M4 Pro)

Apple MacBook Pro 14-inch (M4 Pro) powers local ML workloads, large datasets, and multi-display analysis for field and lab teams.