We have turned this theory on its head by proving that free radical
production increases during aging because free radicals
actually combat -- not cause -- aging.
Once a free radical
joins with an antioxidant, it is stable.
These thermodynamic properties can be used to predict a pecking order, or hierarchy, for free radical
When a free radical
becomes oxidized, it turns into a pro-oxidant.
present 17 articles by Asian researchers working in free radical
biology, gastroenterology, and hepatology who discuss the role of free radicals
in digestive diseases such as pancreatitis, cancer, liver disease, hepatitis C, inflammatory bowel disease, drug-induced small intestinal injury, gastric mucosal injury, and infection, as well as the biology of free radicals
, the role of biomarkers in monitoring the degree of disease and the design of new therapeutic strategies, and factors such as transition metal imbalance, lipid and glucose metabolic disturbance, mitochondria, oxidative stress and inflammation, and the interaction of gaseous molecules in producing free radicals
Research approaches for explaining the effects of free radical
exposure on protein structure are explored.
The content of this paper is to explore the effectiveness of tannins on the inhibition of free radicals
and to discover the free radical
scavenging abilities of tannins in unknown plant species.
Now, the free radicals
formed roam throughout the body looking for the needed electron, until they get it by oxidizing the nearest molecule, which--now having an unpaired electron--becomes a free radical
itself, starting a chain reaction that involves more free radicals
, more instability and more damage resulting in the disruption of the living cell.
Now researchers report in the August 2005 Journal of Clinical Investigation that even before the immune system cranks up, NADPH oxidases in pollen itself generate a type of free radical
known as reactive oxygen species (ROS), which interfere with cell signaling pathways and cause the immune system to overreact.
Some of the most common sources of free radical
stress in the body come from smoking, chronic stress, and obesity.
molecules can exist on their own, but they are sometimes found within the structure of certain enzymes or proteins, which have either attracted them or, in some cases, produced them themselves.
A free radical
is an atom or molecule that has at least one unpaired electron, causing it to be very chemically reactive.