Brain has a mechanismfor dehydration
The human brain can preserve oxygen to protect itself from the effects of dehydration, a new study finds.
Although dehydration significantly reduces blood flow to the brain, researchers in
"This research has helped us understand a lot more about how the human brain responds to extreme exercise in extreme conditions," study first author
"We can now see that blood flow to this vital organ is significantly affected by dehydration. But we can also see that this is when the brain kicks in, preserving its own oxygen consumption to ensure it sustains its function."
This coping mechanism is likely what enables athletes who become dehydrated during exercise to keep going. The study authors cautioned, however, that their findings should serve as a reminder of the importance of proper hydration, noting that getting enough fluids is essential for athletes who want to maintain peak performance.
"These findings show that the brain has remarkable ways of protecting itself from extreme circumstances, however they also clearly substantiate the recommendation that people should ingest fluids during exercise to help optimize physiological function and performance,"
Nanoparticle alarm clock
to awaken immune systems
One pioneering approach uses nanoparticles to jumpstart the body's ability to fight tumors, Nanowerk? said.
Nanoparticles are too small to imagine. This makes them stealthy enough to penetrate cancer cells with therapeutic agents such as antibodies, drugs, vaccine type viruses, or even metallic particles. Though small, nanoparticles can pack large payloads of a variety of agents that have different effects that activate and strengthen the body's immune system response against tumors.
"Our lab's approach differs from most in that we use nanoparticles to stimulate the immune system to attack tumors and there are a variety of potential ways that can be done," said
The immune therapy methods limit a tumor's ability to trick the immune system. It helps it to recognize the threat and equip it to effectively attack the tumor with more 'soldier' cells. These approaches are still early in development in the laboratory or clinical trials.
Most Popular Stories
- Paniagua Wins Grand Prize in Young Artists Program
- Yaris Adds French Flair for US Market
- Cable TV Not Going Away, Says Cable TV
- German Intelligence Blames Ukraine Rebels for MH17
- IBM to Pay Big to Unload Chip Division
- Sub Hunt Brings Cold War Chill Back to Baltic
- Turkey to Help Kurds Reach Fight in Kobani
- Perez Leads Push for Obama's Job Proposals
- Cowboys Turn Back Clock to Glory Days
- Kerry Cites Moral Need in Weapons Air Drop