Dicarbonyl scavenging (isoketal/isolevuglandin)

Class

Dicarbonyl scavenger

Dicarbonyl scavenging refers to a therapeutic strategy aimed at neutralizing highly reactive byproducts of lipid oxidation known as isoketals (also called isolevuglandins). These molecules form spontaneously when polyunsaturated fatty acids, particularly arachidonic acid, are oxidized under conditions of oxidative stress, without requiring any enzyme. Isoketals are unusually reactive dicarbonyl compounds that rapidly attach to lysine residues on nearby proteins, forming stable adducts that can impair protein function, alter immune recognition, and promote inflammation. Because this damage accumulates wherever oxidative stress is chronic, isoketal formation has been implicated in a broad range of conditions, including atherosclerosis, hypertension, heart failure, and neurodegenerative disease. The therapeutic rationale is to intercept these reactive dicarbonyls before they can modify proteins, using small nucleophilic molecules that react preferentially with isoketals rather than with cellular proteins. This scavenging approach does not target a single receptor or enzyme in the classical sense; instead, it addresses a chemical byproduct of oxidative metabolism that contributes to tissue injury across multiple organ systems. By reducing protein adduct formation, scavengers aim to limit downstream inflammatory signaling and preserve normal cellular function in settings where oxidative stress is persistently elevated.