Add BrightSurf on Google Email

Science News Archive 2002 - Page 65


Page 65 of 93

Angry young men prone to premature heart disease

A study published in Archives of Internal Medicine found that young men who express or conceal their anger are five times more likely to experience an early heart attack. The researchers analyzed data from over 1,000 medical students and found that those with the highest level of anger were more likely to develop cardiovascular disease.

SourceJohns Hopkins Medicine·JournalArchives of Internal Medicine·DateApr 21, 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

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

Amphibians and crippling parasites

A new study found a striking connection between malformed amphibians and the presence of Ribeiroia, a parasitic infection. The parasite was linked to limb malformations in over 12,000 amphibians across 11 species, with Pacific treefrogs exhibiting the greatest number of abnormalities.

SourceEcological Society of America·JournalEcological Monographs·DateApr 18, 2002

Let them sleep!

A study of 729 teenagers aged 12-17 found they slept an average of 8.5 hours during the week and 9.5 hours on weekends, with nearly half reporting daytime sleepiness. The later wake times among older teens suggest starting school later may improve attendance and academic performance.

New report explains ice-age mystery

Researchers at UC Davis and UC Santa Barbara have discovered a link between rapid changes in ocean carbon chemistry during the last ice age and shifts in ocean circulation. The study sheds light on how human-induced global warming may affect ocean currents, weather patterns, and climate worldwide.

Gene mutation influences filtering of blood by kidneys

A study using mice found that mutations in the Lmx1b gene cause a reduction in two proteins necessary for mature podocytes to function properly. This disruption leads to immature podocytes and impaired kidney filtering, increasing the risk of kidney problems associated with nail-patella syndrome.

SourceWashU Medicine·JournalJournal of Clinical Investigation·DateApr 18, 2002

New treatment option for children with malaria

A new treatment combination of amodiaquine and artesunate has shown high cure rates for uncomplicated malaria in children under 11 years old. The study found that the treatment was more effective than amodiaquine alone, with higher cure rates in Gabon compared to Kenya and Senegal.

SourceThe Lancet_DELETED·JournalThe Lancet·DateApr 18, 2002