ScienceDaily: Top Health News |
- Smelling a skunk after a cold: Brain changes after a stuffed nose protect the sense of smell
- How stress and depression can shrink the brain
- New genetic regions influencing blood glucose traits revealed
- Mutations disrupt cellular recycling, cause a childhood genetic disease
- Stem cells may prevent post-injury arthritis
| Smelling a skunk after a cold: Brain changes after a stuffed nose protect the sense of smell Posted: 12 Aug 2012 12:17 PM PDT Once our nostrils clear after a cold, we take for granted that our sniffers will dependably rebound. That dependability is no accident. It turns out the brain is working behind the scenes to make sure the sense is just as sharp after the nose recovers. A new study shows that after the human nose has been blocked for a week, brain activity rapidly changes in the regions connected to the olfactory system.  |
| How stress and depression can shrink the brain Posted: 12 Aug 2012 12:16 PM PDT Major depression or chronic stress can cause the loss of brain volume, a condition that contributes to both emotional and cognitive impairment. Now scientists have discovered one reason why this occurs -- a single genetic switch that triggers loss of brain connections in humans and depression in animal models.  |
| New genetic regions influencing blood glucose traits revealed Posted: 12 Aug 2012 12:16 PM PDT Researchers have used a specially designed DNA chip, the MetaboChip array, to identify 38 new genetic regions that are associated with glucose and insulin levels in the blood. This brings the total number of genetic regions associated with glucose and insulin levels to 53, over half of which are associated with type 2 diabetes.  |
| Mutations disrupt cellular recycling, cause a childhood genetic disease Posted: 12 Aug 2012 12:15 PM PDT Researchers have identified a key gene that, when mutated, causes the rare multisystem disorder Cornelia deLange syndrome. Mutations in the HDAC8 gene disrupt genetic transcripton, impairing early development.  |
| Stem cells may prevent post-injury arthritis Posted: 10 Aug 2012 08:28 AM PDT Researchers may have found a promising stem cell therapy for preventing osteoarthritis after a joint injury.  |
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