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Science News for November 4, 2003


Direct link found between chronic inflammation, colon cancer

Chronic inflammation has been linked to an increased risk of colon cancer, with oxidative stress playing a key role in the development of genetic mutations. Researchers found that DNA damage caused by malondialdehye can lead to frameshift mutations, which may contribute to colorectal cancer.

SourceVanderbilt University Medical Center·JournalProceedings of the National Academy of Sciences·DateNov 4, 2003

Whole tomato powder effective in preventing prostate cancer

A study published in the Journal of the National Cancer Institute found that rats fed whole tomato powder had a 26% lower risk of prostate cancer death compared to those on control diets. The researchers suggest that whole tomato products and energy balance may offer independent benefits against prostate cancer.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateNov 4, 2003
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Exercise, not diet, may be best defense against heart disease

A study of 9,790 participants found that exercising more and eating a balanced diet reduced cardiovascular mortality rates by over half. Those who were overweight or obese but exercised less faced increased cardiovascular risks, even if they ate fewer calories.

SourceCenter for Advancing Health·JournalAmerican Journal of Preventive Medicine·DateNov 4, 2003

Explanation offered for Antarctica's 'blood falls'

Researchers from Ohio State University discovered that Blood Falls is the last remnant of an ancient salt-water lake, formed when sea levels were higher. The lake probably existed 5 million years ago, and its remains are being slowly pushed out by the glacier.

SourceOhio State University·DateNov 4, 2003

Study explores safety of low-dose radiation

Researchers are studying the effects of low doses of radiation on zebrafish embryos to understand DNA damage and repair mechanisms. The study aims to determine the threshold for damage and whether certain genes and proteins can prevent or repair damage, with potential implications for human health.

SourceMedical College of Georgia at Augusta University·DateNov 4, 2003
Sony Alpha a7 IV (Body Only)

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Lycopene's anti-cancer effect linked to other tomato components

A recent study suggests that lycopene's anti-cancer effect is enhanced by other compounds in tomatoes, such as phytochemicals. Whole tomato consumption was found to offer a lower risk of prostate cancer death compared to dietary supplements.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalJNCI Journal of the National Cancer Institute·DateNov 4, 2003

Summa Health System improves stroke care using ace model of care

Summa Health System's ACE model of care enhances stroke care by focusing on comprehensive assessment, function-oriented patient-centered care, and interdisciplinary team management. The system's dedicated 34-bed stroke unit discharges nearly 1,000 patients annually, making it the largest provider of stroke care in Northeast Ohio.

SourceSumma Health System·JournalJournal of the American Geriatrics Society·DateNov 4, 2003

Gender differences in brain response to pain

Researchers found that men's brains showed greater activity in cognitive regions when given pain stimuli, while women's brains responded more strongly in limbic regions. These differences may have evolved due to distinct roles of men and women in stress responses, with women's brains being more nurturing and protective.

SourceUniversity of California - Los Angeles·DateNov 4, 2003

La Niña influences Amazon flooding

A recent study published in Nature announces a major advance in the study of Amazon Basin's hydrology and geochemistry dynamics. The research partnership has yielded precise measurements of water, sediment, and geochemical inputs contributed by the Amazon's main tributaries.

SourceInstitut de recherche pour le développement·JournalNature·DateNov 4, 2003
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Natural disasters illuminated by B-movie clips

The Penn State Earth 101 course uses B-movie clips to engage students in learning about natural disasters, promoting critical thinking and science-based decision-making. Students work on projects such as public affairs manuals for cities with earthquake histories, debating topics like government response to natural disasters.

SourcePenn State·DateNov 4, 2003

Dietary supplement many not lower prostate cancer risk

Researchers at Ohio State University Comprehensive Cancer Center found that a diet rich in whole tomatoes, but not supplements, was associated with longer survival rates and reduced risk of prostate cancer. The study also showed that energy restriction did not offer additional benefits over a balanced diet.

SourceOhio State University·JournalJNCI Journal of the National Cancer Institute·DateNov 4, 2003

Red sea urchins found to live up to 200 years

Researchers from Oregon State University and Lawrence Livermore National Laboratory found red sea urchins can live for over 200 years, defying previous seven-15 year lifespan estimates. The study used two techniques to determine ages, producing consistent results that show no signs of senescence until death.

SourceOregon State University·DateNov 4, 2003