Skip to Content
Medical Term:

lipoic acid

Pronunciation: li-po'ik as'id


A bacterial growth factor present in yeast and liver extracts; may be useful in the treatment of mushroom poisoning. Functions as the amide (lipoamide) cofactor in the disulfide (—S—S—) form in the transfer of “active aldehyde” (acetyl), the two-carbon fragment resulting from decarboxylation of pyruvate from a-hydroxyethylthiamin pyrophosphate to acetyl-CoA, itself being reduced to the dithiol form (dihydrolipoic acid) in the process. Lipoic acid is also an essential component of other a-keto acid dehydrogenase complexes.

Synonym(s): acetate replacement factor, ovoprotogen, protogen, protogen A, pyruvate oxidation factor, thioctic acid

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.