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Science News Archive 2002


Page 59 of 93

Molecular 'motor' drives rotavirus replication

Researchers describe atomic structure of rotavirus protein NSP2, which drives viral genome replication and packaging. Identifying this protein as a potential target for anti-viral drugs could help combat rotavirus infections.

Alcohol may hasten the progression of cancer

Research found that chronic alcohol consumption led to a decrease in survival of melanoma-bearing mice due to body fat loss, suggesting potential risks for human cancer patients. The study also highlights the role of leptin in modulating immune function and cancer progression.

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.

Mayo Clinic researchers find useful test for identifying patients

Mayo Clinic researchers have found a renewed use for a test to identify patients at risk of long QT syndrome, a genetic condition that can cause sudden death. The study used epinephrine infusion and electrocardiogram monitoring to detect a specific response in people with long QT syndrome 1, a subtype of the condition.

Blocking gene may reduce lung scarring caused by radiation therapy

Researchers suggest that drugs blocking the ICAM1 gene could reduce lung scarring caused by radiation therapy, potentially improving patients' breathing and exercise abilities. In a study, mice lacking this gene showed improved pulmonary function tests and reduced fibrosis, indicating inflammation's role in lung scarring.

Other highlights in the May 15 issue of JNCI

Research findings link insulin-like growth factor I (IGF-I) to decreased lung cancer risk when bound by IGFBP-3. Environmental factors influence DNA methylation patterns in tumor suppressor genes, which may impact cancer incidence. Electro-gene therapy enhances IL-12 protein delivery, triggering long-lasting antitumor responses.

Why is cloning so hard?

Researchers analyzed cloned mouse embryos for Oct4 gene expression to evaluate genetic reprogramming. Most cumulus-cloned embryos failed to properly reprogram their Oct4 gene pattern, resulting in low developmental potential and viability.

AmScope B120C-5M Compound Microscope

AmScope B120C-5M Compound Microscope supports teaching labs and QA checks with LED illumination, mechanical stage, and included 5MP camera.

Jonathon Knight receives ASM Communications Award

Wohlbachia bacteria can convert males to females through sex changes or kill them in eggs, sparking defensive tactics in infected insects. Jonathon Knight's award-winning Nature article shed light on this common parasitic microbe's impact worldwide.

Apple iPhone 17 Pro

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

University of South Florida team conducts trial for HIV vaccine

The USF team, led by Dr. Jeffrey Nadler, is conducting a national study to assess the safety and ability of an HIV vaccine to stimulate immunity in healthy adults. The vaccine, developed by Merck & Co., uses a prime boost regimen and boosts the activity of killer cells in the immune system to target and kill HIV-infected cells.

GlaxoSmithKline Drug Discovery and Development Award 2002

The GlaxoSmithKline Drug Discovery and Development Award provides funding for innovative HIV/AIDS research, including therapies aimed at treating infection and preventing transmission. The award is intended to further the development of inventive treatments for HIV/AIDS.

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.

Study raises questions on widespread prescribing of diabetic footwear

A recent study found that ulcer rates were similarly low in patients with diabetes and prior foot ulcers, regardless of the type of shoes they wore. The researchers suggest that careful attention by healthcare professionals may be more effective in preventing ulcers than therapeutic footwear.

Research suggests diabetes drug being prescribed even when contraindicated

A University of North Carolina at Chapel Hill study found that nearly one in four metformin prescriptions were given to patients with contraindications. The study suggests that providers may not be adequately documenting the risks of lactic acidosis and should consider counseling patients on metformin use.

Geologists show how wetlands can clean up acid mine drainage

Researchers found that certain wetlands were successful in cleaning up acid mine drainage due to factors such as low water acidity and minimal destruction of native plants. However, clogging of limestone drains was a common issue, highlighting the need for regular maintenance and larger constructed wetlands.

Key powerhouse enzyme linked to cancer development

Researchers discovered PRDX3, a key powerhouse enzyme, plays a crucial role in controlling tumor growth. By manipulating PRDX3 activation, tumors can be halted or accelerated. Understanding this pathway could lead to new cancer treatments.

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.

Older adults can exercise just once a week to maintain muscle strength

A study by researchers at Ball State found that older adults who performed low-volume, high-intensity resistance training once a week maintained their muscle strength over time. In contrast, those who stopped exercising after three months experienced significant declines in thigh muscle strength and size.

Scientists discover protein identifies damage to DNA

Researchers at the University of North Carolina at Chapel Hill have identified a protein called ATR that senses damaged DNA and triggers the body's natural repair system. This discovery is significant as it highlights a crucial step in maintaining genome stability and preventing mutations that can lead to cancer.

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.

Jury’s still out on use of marijuana derivative for MS

A large randomized clinical trial found that synthetic THC and plant-extract marijuana derivatives were safe but showed no improvement in spasticity symptoms for multiple sclerosis patients. Side effects, particularly with the plant-extract, were common and may limit potential dosages.

Opening up research ethics boards

Research ethics boards involved in industry-sponsored pharmaceutical trials are under investigation due to concerns of secrecy and lack of transparency. Industry sponsorship can create conflicts of interest, compromising the integrity of clinical trials and patient safety.

Twelve new coral and fish species discovered off Madagascar

A recent marine expedition off Madagascar has doubled the number of described corals in the area, highlighting the importance of protecting this region's biodiversity. The team also found nine new coral species and three new fish species, shedding light on the need for sustainable conservation efforts.

Rigol DP832 Triple-Output Bench Power Supply

Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.

Asian immigrants likely to see blood pressure rise

A study of nearly 2,000 Asian immigrants found that hypertension rates rise with duration of residence in North America. Immigrants who lived for four or fewer years had a prevalence below 3%, while those living ten or more years had over 13%.

Meta Quest 3 512GB

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

No greater risk if physician delivers fewer babies

A Canadian study divided physicians into low-, medium- and high-volume groups and found no significant differences in maternal complications or newborn outcomes. Family physicians in lower volumes were more likely to consult obstetricians and perform inductions.

Mathematical model provides new tool to assess mail-borne spread of anthrax

The model simulates the mail-borne anthrax outbreak in the US, demonstrating that six original letters contaminated up to 5,000 other pieces of mail, primarily affecting elderly recipients. The analysis highlights the greatest risk to society came from postal workers and recipients of cross-contaminated letters.

The role of phytochromes in bacteria revealed

Researchers have discovered that phytochromes regulate the synthesis of bacterial photosynthetic apparatus, essential for symbiotic relationships with leguminous plants. The discovery provides new insights into the operational mechanisms of light sensors in plants and has potential applications in molecular biology.

Another cascade range volcano may be coming to life

Scientists have detected a bulge in the Earth's crust near South Sister volcano, caused by slow accumulation of molten rock. This has led to an increase in gas emissions and swelling of the ground, raising concerns about potential eruptions.

Metal-eating algae, spartina eradication, horseshoe crabs

Researchers are enhancing genetically altered algae to maximize its ability to pick up trace metals in Lake Erie, a potential game-changer for Great Lakes bio-remediation. Meanwhile, efforts to eradicate invasive Spartina anglica in Puget Sound aim to support native birds and the seafood industry.

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.

Parasite or partner? Study suggests new role for junk DNA

Scientists discovered that some human LINE-1 elements, known as junk DNA, can jump into chromosomes with broken strands and repair the damage. This finding raises questions about the potential benefits of these ancient genetic elements to human cells.

Family history of hypertension is related to maladaptive behavioral responses

Research reveals that family history of hypertension is associated with exaggerated physiological responses to stress and learned maladaptive behavioral patterns. Offspring of hypertensive parents exhibit higher resting heart rates, increased blood pressure, and more negative verbal and nonverbal behaviors during stressful tasks.

New partnerships set to reshape NASA science modeling

NASA is investing $22.8 million in 11 research teams to develop software infrastructure for climate and space science modeling. The partnerships aim to create a framework that enables seamless sharing, reuse, and comparison of scientific approaches from multiple sources.

Researchers seek new hope in old asthma treatment

The LODO study investigates whether low-dose theophylline can improve asthma symptoms and reduce airway inflammation. The therapy may also be more affordable, costing as little as one-fifth of popular asthma medications.

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C)

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C) keeps Macs, tablets, and meters powered during extended observing runs and remote surveys.

Ominous signs of cryptic marine invasions

Researchers suspect that a six-armed brittlestar, common in shallow coral reefs, may have invaded the western Atlantic via ships over the past two centuries. Genetic markers indicate massive long-distance dispersal and recent mixing of populations from the Pacific and Indian Ocean, raising concerns about ecological consequences.

Electronic ‘tongue’ for environmental monitoring

The Cardiff University team has successfully fabricated a tiny chromatographic extraction cartridge on a silicon chip, enabling easy and inexpensive mass production. The system can be integrated into rivers or factory processes to monitor mixtures flowing through it.

NCAR to build software infrastructure in new collaboration

The National Center for Atmospheric Research (NCAR) has won a $3.8 million NASA grant to develop the core software for an Earth System Modeling Framework. The framework will enable models to work together, assimilate observational data, and produce more realistic simulations of weather and climate.

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.

As bodies age, disease-fighting cells lose punch

As bodies age, B cells lose potency due to accumulation of antigen-experienced cells. These cells, which were initially effective against previous infections, become less responsive and bind weakly to new pathogens.

Archaeologists help restore precious pigments on rare sarcophagus

A team of archaeologists, led by Professor C. Brian Rose, has successfully restored the most colorful surviving example of Classical Greek antiquity - a 400-375 B.C. marble coffin with vibrant pigments. The Can sarcophagus, discovered in Turkey, boasts more preserved paint than other ancient Greek artifacts.

First report of stem cell signal of intention to become specific neuron

Researchers at Rush University Medical Center have identified the signal that instructs stem/progenitor cells to become dopamine neurons, a key step in treating Parkinson's disease. By cloning and transplanting these specific cells, the team hopes to develop new treatments for Parkinson's, Alzheimer's, and other diseases.

Study indicates no natural limit to life expectancy

A study led by James W. Vaupel and Jim Oeppen found that life expectancy in developed countries is steadily increasing by three months a year, with no apparent natural limit. This has major implications for social issues such as pension and healthcare planning.

GQ GMC-500Plus Geiger Counter

GQ GMC-500Plus Geiger Counter logs beta, gamma, and X-ray levels for environmental monitoring, training labs, and safety demonstrations.

Scientists find new markers for anthrax isolates

Researchers have identified 60 new genomic markers that can help distinguish between various anthrax isolates, enabling faster identification of outbreak strains and potentially deterring future biological attacks. The discovery is part of a comprehensive database project aimed at analyzing natural variation in all major pathogens.

Outstanding scholars set to improve geriatric social work in U.S.

The Hartford Geriatric Social Work Faculty Scholars Program aims to train and research specialists in geriatric social work, addressing the growing needs of an aging population. The program supports ten faculty scholars over two years, providing institutes, workshops, and research projects focused on improving healthcare outcomes.

Researchers unravel anthrax genomes

Scientists have sequenced the whole genome of Bacillus anthracis, revealing areas of genetic variability between different isolates. The study suggests that a Florida anthrax strain is derived from the Ames strain and has not been genetically modified.

No association between ageing gametes and birth defects

Researchers studied over 1000 pregnant women from diverse countries and found no significant link between optimal timing of conception and lower birth defect rates. The findings are reassuring for natural family planning users and those with infrequent or sporadic sexual activity.

Commonly prescribed antibiotic ineffective for treating bronchitis

A study published in The Lancet found that azithromycin, a commonly prescribed antibiotic, is no more effective than low-dose vitamin C in treating acute bronchitis. Patients who received azithromycin had similar improvements in quality-of-life scores as those who received vitamin C.

Fluke 87V Industrial Digital Multimeter

Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.

Memory isn't 'lost,' just out of sync

The study suggests that objects are recalled by uniting different brain regions, with the thalamus regulating electrical rhythms to connect these areas. This theory may help explain why some memories are clear while others are fuzzy.

Waiting to have a baby

A recent study published in the American Journal of Human Biology found that women who reproduce later in life have a lower chance of having their descendants survive and thrive. In contrast, women who start families earlier tend to have more lineage success. The researchers used statistical models to analyze the impact of education, i...