title: Analysis of medium-chain acyl-coenzyme A esters in mouse tissues by liquid chromatography-electrospray ionization mass spectrometry.
abstract: Medium-chain acyl-coenzyme A (CoA) esters are key metabolites in lipid metabolism. Liquid chromatography-electrospray ionization mass spectrometry analysis of medium-chain acyl-CoA esters is described. Eight medium-chain acyl-CoA esters were well separated on a C(8)-MS reversed-phase column using a linear gradient of ammonium acetate buffer (pH 5.3)-acetonitrile. The positive-ion mass spectra of all the saturated and unsaturated medium-chain acyl-CoA esters gave dominant [M+H](+) ions, whereas their negative-ion mass spectra showed abundant [M-H](-) and [M-2H](2-) ions. The positive-ion mode of operation was slightly less sensitive than the negative-ion detection mode. Five medium-chain acyl-CoA esters of C(6:0), C(8:0), C(8:1), C(10:0), and C(10:1) in liver, heart, kidney, and brain from the mouse were identified. The predominant acyl-CoA peaks were C(6:0), C(8:0), and C(10:0). Small amounts of medium-chain acyl-CoAs of C(8:1) and C(10:1) were detected only in heart and kidney. The analytical method is very useful for the analysis of medium-chain acyl-CoA esters in the tissues.
authors.affiliation: Faculty of Pharmaceutical Sciences, Kobe-gakuin University, 518, Arise, Ikawadani, Nishiku, 651-2180, Kobe, Japan.
authors.forename: Fumiyo
authors.initials: F
authors.lastname: Kasuya
authors.forename: Yusaku
authors.initials: Y
authors.lastname: Oti
authors.forename: Takao
authors.initials: T
authors.lastname: Tatsuki
authors.forename: Kazuo
authors.initials: K
authors.lastname: Igarashi
mesh_terms: D000214:Acyl Coenzyme A / Q000032:analysis / Q000737:chemistry* / Q000378:metabolism; D000818:Animals; D001921:Brain / Q000378:metabolism; D002851:Chromatography, High Pressure Liquid; D007668:Kidney / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D051379:Mice; D009206:Myocardium / Q000378:metabolism; D009928:Organ Specificity; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D000214:Acyl Coenzyme A