Search Results for: mutations

2,468 results for: mutations

1. 

   Tech

   Gene Screen: Ultrasensitive nanowires catch mutations

   Researchers have devised a nanowire sensor that binds to DNA molecules and produces an electrical signal almost instantaneously.

   By Alexandra GohoDecember 23, 2003

2. 

   Brain gene is tied to obesity

   A gene involved in brain chemistry influences whether a person is thin or fat.

   By John TravisJanuary 7, 2004

3. 

   Health & Medicine

   Could refrigeration explain Crohn’s rise?

   Crohn's disease, marked by inflammation of the small intestine, could be caused by refrigeration of meats, a process that selects for hardy bacteria that handle cold temperatures well, researchers hypothesize.

   By Nathan SeppaJanuary 11, 2004

4. 

   Human genes take evolutionary turns

   Researchers have identified a set of genes that has evolved an extensive pattern of alterations unique to people.

   By Bruce BowerJanuary 11, 2004

5. 

   Health & Medicine

   Cluster Buster: Might a simple sugar derail Huntington’s?

   A study in mice with a disease resembling Huntington's shows that a simple sugar impedes the protein aggregation that kills brain cells.

   By Nathan SeppaJanuary 21, 2004

6. 

   Anthropology

   Humanity’s pedestal lowered again?

   A new genetic study reaches the controversial conclusion that chimpanzees belong to the genus Homo, just as people do.

   By Bruce BowerMay 28, 2003

7. 

   Health & Medicine

   MRI detects missed breast cancers

   Magnetic resonance imaging detects breast cancer better than does mammography and might be preferable for certain women at high risk.

   By Nathan SeppaJune 18, 2003

8. 

   A Matter of Taste: Mutated fruit flies bypass the salt

   By creating mutant fruit flies with an impaired capacity to taste salt, researchers have identified several genes that contribute to this sensory system in insects.

   By John TravisJuly 1, 2003

9. 

   Health & Medicine

   DNA Differences Add Risk: Altered genes show up in Lou Gehrig’s disease

   People with amyotrophic lateral sclerosis (ALS) are more likely than healthy people to have certain variations in the vascular endothelial growth factor (VEGF) gene, suggesting variant VEGF contributes to the disease.

   By Nathan SeppaJuly 9, 2003

10. 

    Health & Medicine

    Split Ends: Cancers follow shrinkage of chromosomes’ tips

    Genetic tabs called telomeres, which normally protect the ends of chromosomes, become undersized in many tissues that later turn cancerous, new studies in people show.

    By Ben HarderJuly 16, 2003

11. 

    Health & Medicine

    Metal’s Mayhem: Cadmium mimics estrogen’s effects, thwarts DNA repair

    Cadmium causes endocrine disruption by mimicking estrogen in rats and also thwarts routine DNA repair, causing mutations, two studies show.

    By Nathan SeppaJuly 16, 2003

12. 

    Down the Tubes: Amino acid proves key to plant reproduction

    An amino acid that human brain cells communicate with also has a role in plant sex.

    By John TravisJuly 16, 2003