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Science News Archive April 2006 - Page 6


Page 6 of 15

Other highlights in the April 19 JNCI

Researchers found that BRCA1 and BRCA2 mutation carriers experience a similar reduction in breast cancer risk with increasing number of pregnancies carried to full-term, parallel to that in the general population. Additionally, they discovered that first childbirth at age 20 years or older is associated with increased risk of breast ca...

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateApr 18, 2006

Are you getting your money's worth in health care?

A new study finds that health care spending generates significant health benefits, with a return on investment of $1.55 to $1.94 for every dollar spent. The research demonstrates the value of estimating the impact of health care investments and challenges policymakers to consider cost-effectiveness in their decision-making.

SourceBlackwell Publishing Ltd.·JournalValue in Health·DateApr 18, 2006

Crystal sieves, born anew

Researchers have discovered how certain zeolites form, enabling targeted methods to create crystals with precise sizes and shapes. The study reveals a step-by-step process, including silicon-oxygen nanoparticles forming first, which can be used to develop tailored designs for specific applications.

Single microRNA causes cancer in transgenic mouse

A study published in the Proceedings of the National Academy of Sciences found that overexpression of microRNA miR155 leads to the development of a neoplastic disease in transgenic mice. The researchers believe that miR155 acts as an oncogene, promoting abnormal cell growth and cancerous transformations.

SourceOhio State University·JournalProceedings of the National Academy of Sciences·DateApr 17, 2006

Study points toward alternatives for Vioxx and Celebrex

Researchers found that blocking microsomal prostaglandin E synthase (mPGES)-1 in mice reduces cardiovascular risk, while retaining the benefit of Vioxx and Celebrex. The study suggests a promising alternative for patients with arthritis, conserving clinical benefits while managing cardiovascular risks.

SourceQueen's University·JournalJournal of Clinical Investigation·DateApr 17, 2006

Recurrent melanoma may be more common than previously thought

Researchers found that 20% of participants developed additional melanoma within one year and 27% within two years after initial diagnosis. Those with atypical moles had a higher risk of developing additional melanomas, with those having three or more atypical moles being four times more likely to develop multiple tumors.

SourceJAMA Network·JournalArchives of Dermatology·DateApr 17, 2006

Smoking may cause far more cancer deaths in Asian Americans than previously recognized

A new study by UC Davis Cancer Center researchers reveals that smoking is a significant contributor to cancer death rates among Asian Americans and Pacific Islanders. The study found that non-lung cancer death rates correlate closely with smoke exposures, suggesting that eliminating smoking could lead to very low cancer mortality rates.

SourceUniversity of California - Davis Health·JournalPreventive Medicine·DateApr 17, 2006

How the octopus forms an elbow

Researchers discovered that octopuses generate two waves of muscle contraction to create joint-like bends in their arms, allowing for precise point-to-point movements. This human-like strategy suggests that articulated limbs controlled by joints are the optimal solution for achieving such movements.

SourceCell Press·JournalCurrent Biology·DateApr 17, 2006

Mammography screenings for breast cancer show racial and ethnic disparities

A six-year study analyzing data from 1 million mammograms reveals racial and ethnic disparities in breast cancer screenings. African-American women are more likely to have inadequate screening before diagnosis, whereas Asian and Native American women tend to underutilize mammography, leading to higher advanced-stage tumor rates.

SourceUniversity of California - San Francisco·JournalAnnals of Internal Medicine·DateApr 17, 2006

'Can you hear me now?'

A randomized controlled trial found that telephone support from bilingual prevention care managers significantly increased cancer screening rates among low-income and minority women. The intervention resulted in a 12% increase in mammography screenings, a 7% increase in Papanicolaou tests, and a 13% increase in colorectal screenings.

SourceThe Geisel School of Medicine at Dartmouth·JournalAnnals of Internal Medicine·DateApr 17, 2006