作者: Garry R. Buettner , Freya Q. Schafer , Fred E. Samson
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摘要: Free radicals, you can't live with them and without them. Appreciation is growing that free radicals related oxidants are ubiquitous they involved in common pathways lead to tissue damage from a wide variety of insults. Some combination reactive oxygen species (ROS) nitrogen (RNS) implicated an array neuro-degenerative diseases (including amyotrophic lateral sclerosis Parkinson's disease) many other human health problems ranging the toxicity some xenobiotics cataractogenesis, carcinogenesis, atherosclerosis, diabetes mellitus, ischemia/reperfusion injury, cancer, aging process itself. This has created impression all highly damaging biological systems—in short, bad. But more informed examination chemistry reveals range unique advantages may have as regulators normal physiological functions components information processing brain. Furthermore, ROS RNS biochemical properties permit role intercellular communication, operating extracellular microenvironment, "parasynaptic" manner. Nitric oxide (NO