Mechanism of Isolevuglandin-Protein Adduct Formation in Persistent Immune Activation in Long COVID POTS
Vanderbilt University Medical Center
Summary
Long COVID is defined by a range of symptoms affecting multiple organs that persist for more than three months following an acute SARS-CoV-2 infection. Approximately 7% of individuals who recover from SARS-Cov-2 infection develop Long COVID. Long COVID Postural Orthostatic Tachycardia Syndrome (LCPOTS) symptoms include fatigue, exercise intolerance, orthostatic intolerance, syncope, and heightened orthostatic tachycardia. Research has found that decreased parasympathetic activity in LCPOTS increases the production of highly immunogenic neoantigens Isolevuglandins (IsoLG-adducts). IsoLG-adducts induce formation of circulating monocyte/T cell complexes(doublets) leading to the persistent and unresolved immune response that continues after the initial infection. The purpose of the this research, is to study the effects of 2-hydroxybenzylamine (2-HOBA), an Iso-LG-adduct scavenger, its effects in immune markers and compare it with Placebo
Description
Background: Decreased parasympathetic activity is present in LCPOTS; this system is an important modulator of NAPDH oxidase activity because the activation of NADPH oxidase in monocytes promotes superoxide (reactive oxygen species -ROS) production.Oxidative stress occurs when ROS are generated in excess of normal antioxidants. Oxidative stress occurs when reactive oxygen species (ROS) are generated in excess of normal antioxidantsOxidative stress occurs when reactive oxygen species (ROS) are generated in excess of normal antioxidants that can cause harm by having adverse effects on T cell fun…