New Insights into the Roles of Cysteine and Homocysteine in Pathological Processes IntechOpen Homocysteine Attack on Vascular EndotheliumOld and New Features Frontiers Glutathione: A Samsonian life sustaining small molecule that protects against oxidative stress, ageing and damaging inflammation Homocysteine is an inflammatory amino acid that is produced as a byproduct of protein metabolism. Homocysteine induced injury to the arterial wall is one of the factors that can initiate the process of High Homocysteine Linus Pauling Institute Oregon State University