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Science News for April 19, 2002


Clinical depression may have negative effect on periodontal treatment

A study found that patients with depression experience lower disease improvement rates (4.7%) compared to mentally healthy patients (7.4%). Depressed individuals may be more likely to continue smoking and have impaired immune systems, leading to slower wound healing and poorer treatment outcomes.

SourceAmerican Academy of Periodontology·JournalJournal of Periodontology·DateApr 19, 2002

National consortium proposes 20-mile-long collider

A national consortium led by Cornell University is proposing a 20-mile-long linear collider to detect the Higgs boson and explore supersymmetry and antimatter. The collider would accelerate beams of electrons and positrons at high energies, providing fundamental details about the origin of the universe.

SourceCornell University·DateApr 19, 2002

American Thoracic Society Journal news tips for April (second issue)

A recent study found that stress increases anxiety and depression scores in college students with mild allergic asthma, leading to enhanced airway inflammation. In contrast, intravenous sildenafil reversed vascular resistance in an animal model of neonatal pulmonary hypertension, offering new hope for treating this serious condition.

SourceAmerican Thoracic Society·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateApr 19, 2002

UNC scientist finds chief AIDS cancer needs trauma and virus to get started

A UNC scientist found that trauma and human herpesvirus 8 (HHV8) contribute to the development of Kaposi's sarcoma, a cancer linked to HIV. The researcher also discovered that HHV8 can be detected in saliva prior to disease development, suggesting new treatment possibilities for high-risk individuals.

SourceUniversity of North Carolina at Chapel Hill·JournalNew England Journal of Medicine·DateApr 19, 2002
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.

Ultrapermeable, reverse-selective membranes developed

NC State researchers create polymers that allow larger molecules to pass through, improving both permeability and selectivity. The 'reverse-selective' membranes have potential applications in natural-gas suppliers and petroleum processors.

SourceNorth Carolina State University·JournalScience·DateApr 19, 2002

USC researchers find ozone lowers sperm counts

Researchers at USC found a significant correlation between decreased sperm count and motility and increased ozone levels in the air, especially in Southern California. The study analyzed over 8,000 sperm samples from men in Los Angeles and Northern California and suggests that air pollution may be affecting male fertility.

SourceUniversity of Southern California·DateApr 19, 2002

Adult sleepwalking may be genetic disorder

A study of 74 adult patients with sleepwalking found a strong association with the HLA DQB1*05 genetic susceptibility, which also increases muscle activity during REM sleep. Researchers believe treating underlying health issues may help improve or resolve sleepwalking.

SourceAmerican Academy of Neurology·DateApr 19, 2002
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.

Findings give insight into how colon cells transform into precancerous polyps

Researchers at Vanderbilt University Medical Center have identified a key signaling pathway involved in the development of precancerous polyps. The study found that blocking this pathway can prevent polyp formation and potentially colon cancer. By understanding how this pathway works, scientists hope to develop targeted treatments.

SourceVanderbilt University Medical Center·JournalProceedings of the National Academy of Sciences·DateApr 19, 2002

Cooking tomatoes boosts disease-fighting power

Research at Cornell University found that cooking tomatoes enhances nutritional value by increasing lycopene content, a powerful antioxidant. Vitamin C levels decrease with heat, but antioxidants in cooked tomatoes increase, potentially reducing chronic disease risk.

SourceCornell University·JournalJournal of Agricultural and Food Chemistry·DateApr 19, 2002

Widespread amphibian deformities caused by parasite

Researchers found a strong link between amphibian deformities and parasites, particularly those carried by snails, which thrive in human-altered habitats. The study surveyed over 60% of sites in Oregon, where deformities were linked to the presence of Ribeiroia parasite.

SourceOregon State University·JournalEcological Monographs·DateApr 19, 2002