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Science News for November 1, 1999


UC researchers use Doppler ultrasound

Researchers at UC have developed a novel method for detecting early signs of artery blockages using Doppler ultrasound, which can accurately predict turbulence intensity and detect atherosclerosis. This non-invasive technique is safer than current methods requiring ionizing radiation or pressure transducer insertion.

Research challenges conventional thinking on ways to treat prostate cancer

Researchers at Memorial Sloan-Kettering Cancer Center challenge current understanding of prostate cancer treatment by showing that testosterone withdrawal triggers a dormant state in tumor cells, rather than causing widespread cell death. This study offers new hope for developing targeted therapies to combat recurrent prostate cancer.

SourceMemorial Sloan Kettering Cancer Center·JournalJNCI Journal of the National Cancer Institute·DateNov 1, 1999

Chromosome changes predict more deadly prostate tumors

Men with specific chromosome 8 abnormalities have a 30% survival rate after 10 years, compared to 78% for those with normal chromosomes. The findings could help identify patients who require closer follow-up and more aggressive early treatment.

SourceMayo Clinic·JournalJNCI Journal of the National Cancer Institute·DateNov 1, 1999

Duke study: Poured sand sifts, but showered sand doesn't

A Duke study reveals that the pressures under poured sandpiles are highest at their peripheries due to unbalanced distributions of stresses. In contrast, showered sand piles concentrate stresses at their centers like medieval cathedrals' flying buttresses. This research has practical importance for structures prone to self-destruction.

SourceDuke University·JournalPhysical Review E·DateNov 1, 1999

Traumatic brain injury hastens onset of Alzheimer's disease

A recent Mayo Clinic study found that traumatic brain injuries increase the risk of Alzheimer's Disease, with a median observed time from injury to onset of 10 years. The study suggests that traumatic brain injury interacts with other factors to hasten the onset of Alzheimer's in susceptible individuals.

SourceMayo Clinic·JournalAmerican Journal of Epidemiology·DateNov 1, 1999

Challenges of welfare reform

Researchers find substance use and dependence are significant problems among welfare recipients, but academic skill deficits are a greater barrier to self-sufficiency. Effective services addressing mental health needs and providing support for work barriers are crucial for successful fulfillment of family roles.