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Science News for September 15, 1999


Blueberries: New thrills for those over the hill

A new research study found that animals fed a blueberry extract diet showed fewer age-related motor changes and outperformed their counterparts on memory tests. The antioxidants in blueberries may help protect the body against oxidative stress, a process implicated in aging and neurodegenerative diseases.

SourceNIH/National Institute on Aging·DateSep 15, 1999

Fluorescent signaling by immune cells

Researchers have successfully engineered CD4+ T cells to carry a fluorescent marker, allowing for the first time the tracking of autoimmune cells in vivo. The technique enables the study of physiological processes and inflammatory diseases, opening new avenues for therapeutic approaches.

SourceMax-Planck-Gesellschaft·JournalNature Medicine·DateSep 15, 1999
Apple iPhone 17 Pro

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

Cancer tumors shown to consume large amounts of vitamin C

Researchers at Memorial Sloan-Kettering Cancer Center found that cancer tumors acquire and retain large amounts of vitamin C. This discovery highlights the nutritional needs of tumors, similar to healthy cells. Further studies are needed to determine how tumor cells utilize vitamin C once it is acquired.

SourceMemorial Sloan Kettering Cancer Center·JournalCancer Research·DateSep 15, 1999

Brain chemical mellows male mice, but makes mouse moms tough

Scientists at Johns Hopkins University discovered that the brain chemical nitric oxide makes female mice more aggressive when defending their pups, while reducing aggression in male mice. The study also found that brain cells producing citrulline significantly correlated with female mouse aggressiveness.

SourceJohns Hopkins University·DateSep 15, 1999

Some HIV patients show no viral rebound after stopping drugs

Researchers found that six HIV-infected patients who stopped taking antiviral drugs yet continued to suppress HIV replication had strong immune responses. The study suggests that temporarily discontinuing drugs may help maintain the virus at a low level, paving the way for vaccine development.

SourceRockefeller University·JournalJournal of Clinical Investigation·DateSep 15, 1999
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.

New findings point to new target to block angiogenesis

Scientists at Vanderbilt University Medical Center have identified a new target for drugs that inhibit tumor angiogenesis. Thromboxane A2 receptor antagonists show promise in blocking endothelial cell migration and preventing blood vessel formation associated with tumors.

SourceVanderbilt University Medical Center·JournalCancer Research·DateSep 15, 1999

Alcohol consumption triggers free-radical damage in the body

A new study found that heavy alcohol consumption initiates free-radical mediated processes associated with heart disease, stroke, cirrhosis of the liver, and other chronic diseases. Vitamin C may help quell this activity, potentially limiting organ injury.

SourceUniversity of Pennsylvania School of Medicine·JournalJournal of Clinical Investigation·DateSep 15, 1999
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.

Hormone linked to body weight may help regulate blood pressure

Researchers have found a potential link between leptin and high blood pressure in a study of over 300 healthy adults. Higher levels of leptin were associated with higher diastolic blood pressure, suggesting that leptin may play a role in regulating blood pressure.

SourceAmerican Heart Association·DateSep 15, 1999

UMass engineer receives grant to study high-speed wireless communicatione

Dennis L. Goeckel, an assistant professor of electrical engineering at the University of Massachusetts, has received a $200,000 grant from the National Science Foundation to continue his research on high-speed wireless communication. He uses mathematical models to optimize signals and improve reception quality.

SourceUniversity of Massachusetts Amherst·DateSep 15, 1999

Microbial hydrocarbon 'cracking'

Researchers discover microbes convert saturated hydrocarbon hexadecane to methane and carbon dioxide, leading to potential methane formation in old sediments. This process, known as microbial hydrocarbon 'cracking,' sheds light on slow yet globally relevant microbial processes in deep subsurface environments.

SourceMax-Planck-Gesellschaft·JournalNature·DateSep 15, 1999