Tag Archives: domino effect

Breast Cancer DNA Mutator Found

Masonic Cancer Center researchers discover a virus-fighting enzyme

It’s well known that sunlight and chemical carcinogens can mutate DNA, and that mutations are essential for cancer to develop.

One big mystery was what causes the thousands of mutations evident in most breast cancers.

Now researcher Reuben Harris, Masonic Cancer Center, University of Minnesota, and his colleagues have found evidence that one of our own proteins is a major source of these mutations. The researchers have just published evidence implicating the protein—an enzyme called APOBEC3B—in the international journal Nature. (more…)

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For Some Medical Residents, Empathy Declines With Long-Call

*In a newly published study, researchers found the majority of medical residents surveyed experienced a decline in empathy over the course of the oft-used “long-call” shift.*

Fatigue and sleep deprivation are undisputed job descriptors for medical residents, but results from a new study indicate the common “long-call” shift may have adverse effects not only for residents, but also their patients.

University of Arizona alumna Stacey Passalacqua, now a visiting assistant professor at James Madison University’s School of Communication, surveyed nearly 100 medical residents at several different hospitals. (more…)

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Fossil Bird Study Describes Ripple Effect of Extinction in Animal Kingdom

GAINESVILLE, Fla. — A University of Florida study demonstrates extinction’s ripple effect through the animal kingdom, including how the demise of large mammals 20,000 years ago led to the disappearance of one species of cowbird.

The study shows the trickle-down effect the loss of large mammals has on other species, and researchers say it is a lesson from the past that should be remembered when making conservation, game and land-use decisions today. (more…)

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