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Science News for October 30, 2000


The horrible impact of war on health

War has a profound impact on the environment and human health, causing widespread destruction of infrastructures, displacement of populations, and ongoing presence of radioactivity and toxins. Medical personnel working in conflicts must recognize and document sexual violence, provide necessary care, and advocate for justice to prevent ...

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateOct 30, 2000

Refugee health compromised by stress

A recent study highlights the significant impact of stress on refugee health, revealing that psychological factors such as anxiety, depression, and financial worries contribute to physical illness and mental health issues. The study found that only 6% of refugees suffered from PTSD, suggesting that a medical diagnosis may not fully cap...

SourceCenter for Advancing Health·JournalJournal of Traumatic Stress·DateOct 30, 2000

Transplanted human stem cells develop into broad range of tissues, persist over a year in research at The Children's Hospital of Philadelphia

Researchers induced human adult stem cells to develop into various tissues, including bone, cartilage, and muscle, when transplanted into fetal sheep. The transplanted cells persisted for over a year without rejection, suggesting potential for tissue repair and regeneration.

SourceChildren's Hospital of Philadelphia·JournalNature Medicine·DateOct 30, 2000

Irradiation, refrigeration can add to beneficial effects of wine grapes

Researchers found that low-level ultraviolet irradiation and refrigeration can significantly increase the antioxidant compound resveratrol in grapes, potentially leading to reduced risk of high cholesterol, heart disease, and Alzheimer's. The treatment has no known side effects and may be beneficial for other grape varieties.

SourceAmerican Chemical Society·JournalJournal of Agricultural and Food Chemistry·DateOct 30, 2000

Mammography programs show benefit

Randomized trials demonstrate the effectiveness of mammography programs in reducing breast cancer mortality. The studies showed that recall rates after first and subsequent screens were 9.5% and 4.6%, respectively. Additionally, organized breast cancer screening programs can provide more comprehensive monitoring for at-risk populations.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateOct 30, 2000

Tracking a microscopic "rocket" by its tail

Biomedical engineers at Johns Hopkins University use a laser device to view microscopic movement and detect stutter-step motions in Listeria tails. This contradicts the widely held belief that filaments grow and push in a smooth continuous motion, suggesting a new mechanism for bacterial locomotion.

SourceJohns Hopkins University·JournalNature·DateOct 30, 2000