title: Detection of 3,4-dihydroxyphenylglycolaldehyde in human brain by high-performance liquid chromatography.
abstract: The monoamine oxidase A metabolite of noradrenaline, 3,4-dihydroxyphenylglycolaldehyde, is the precursor of 3,4-dihydroxymandelic acid, and 3,4-dihydroxyphenylglycol, metabolites of noradrenaline. Owing to difficulties in purifying this aldehyde, it has not been previously characterized or identified in biological sources. This paper describes an enzymatic synthesis, purification, and characterization of 3,4-dihydroxyphenylglycolaldehyde. The aldehyde metabolite is identified in postmortem human brain using high-performance liquid chromatography and electrochemical detection. We estimate the concentration in human hippocampus to be 0.164 +/- 0.05 nmol/g. The importance of this aldehyde metabolite of noradrenaline is discussed.
authors.affiliation: Department of Neurology, Veterans Administration Medical Center, St. Louis, Missouri.
authors.forename: W J
authors.initials: WJ
authors.lastname: Burke
authors.forename: M B
authors.initials: MB
authors.lastname: Mattammal
authors.forename: G L
authors.initials: GL
authors.lastname: Marshall
authors.forename: H
authors.initials: H
authors.lastname: Chung
mesh_terms: D000327:Adsorption; D000368:Aged; D000369:Aged, 80 and over; D000447:Aldehydes / Q000378:metabolism; D000537:Aluminum Oxide; D001923:Brain Chemistry; D002396:Catechols; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D006624:Hippocampus / Q000032:analysis; D006801:Humans; D008995:Monoamine Oxidase / Q000378:metabolism
chemical_list: D000447:Aldehydes; D002396:Catechols; C007431:3,4-dihydroxyphenylglycolaldehyde; D008995:Monoamine Oxidase; D000537:Aluminum Oxide