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Science News for October 3, 2010


Newly discovered DNA repair mechanism

Researchers have discovered a new way that DNA-repair enzymes detect and fix damage to the chemical bases in the genetic code. The newly discovered mechanism detects and repairs a common form of DNA damage called alkylation, which is caused by environmental toxins and chemotherapy drugs.

SourceVanderbilt University·JournalNature·DateOct 3, 2010

Identifying enzymes to explode superbugs

Researchers have developed a method to identify lytic enzymes with optimal bacteria-killing characteristics, which can target superbugs while leaving beneficial bacteria intact. The discovery aims to hasten the development of engineered enzymes for clinical use and offer a 'push button technology' solution.

SourceIOP Publishing·JournalPhysical Biology·DateOct 3, 2010

The secret life of Ireland's smooth-hound sharks

Researchers reveal starry smooth-hounds grow twice as slowly and only reproduce every two years, sparking concern over slow reproductive rate and potential impact on population. The findings provide a unique opportunity to conserve the enigmatic species.

SourceWiley·JournalJournal of Fish Biology·DateOct 3, 2010

Can telemedicine improve geriatric depression?

A telemedicine-based depression care protocol was successfully implemented in home health care, with high patient satisfaction and significant improvement in depression severity. The pilot study's findings offer encouragement for expanding this program to reach elderly individuals who can experience a better quality of life.