Ethanolamine (MEA)

Ethanolamine, also known as 2-aminoethanol, is a primary amine and primary alcohol that serves as a vital building block in biological membranes, specifically as a precursor for phosphatidylethanolamine [PubChem, CID 700]. It is synthesized endogenously through the decarboxylation of serine or obtained through the diet, playing a central role in the Kennedy pathway for phospholipid production [PubMed, PMID 23506877]. While ethanolamine itself is a metabolite rather than a protein target, its metabolic derivatives and the enzymes regulating its concentration are critical for cellular homeostasis and signaling [UniProt, P35790]. In a clinical context, ethanolamine is most recognized in the form of ethanolamine oleate, an FDA-approved sclerosing agent used to treat bleeding esophageal varices by inducing local tissue inflammation and vascular occlusion [StatPearls, NBK557544]. Dysregulation of ethanolamine metabolism has been implicated in various pathological states, including Alzheimer's disease and certain cancers, where membrane lipid composition is significantly altered [PubMed, PMID 30256714]. Consequently, while not a direct drug target, monitoring and modulating ethanolamine levels remains a point of interest in metabolic and degenerative research.

Other names

2-aminoethanolMonoethanolamineColamineGlycinol2-Hydroxyethylamine

In its therapeutic form as ethanolamine oleate, it acts as a sclerosing agent by inducing a dose-related inflammatory response in the intimal endothelium of veins, leading to thrombus formation and subsequent fibrosis [StatPearls, NBK557544].