title: Determination of intracellular glutathione and cysteine using HPLC with a monolithic column after derivatization with monobromobimane.
abstract: An optimized high-performance liquid chromatography (HPLC) method is used to show that, as myoblasts differentiate into multinucleated muscle fibers, there is a shift to a more oxidized cell redox state. The HPLC method incorporated derivatization with monobromobimane for the determination of the reduced (GSH) and oxidized (GSSG) forms of glutathione and the reduced (Cys) and oxidized (CysSS) forms of cysteine. The derivatization was optimized to improve the sensitivity of the approach; the limits of detection for glutathione and cysteine were 3 x 10(-8) and 5 x 10(-8) M, respectively.
authors.affiliation: Institute for Technology Research and Innovation, Deakin University, Geelong, Victoria, Australia. xavier@deakin.edu.au <xavier@deakin.edu.au>
authors.forename: Xavier A
authors.initials: XA
authors.lastname: Conlan
authors.forename: Nicole
authors.initials: N
authors.lastname: Stupka
authors.forename: Geoffrey P
authors.initials: GP
authors.lastname: McDermott
authors.forename: Paul S
authors.initials: PS
authors.lastname: Francis
authors.forename: Neil W
authors.initials: NW
authors.lastname: Barnett
mesh_terms: D000368:Aged; D001643:Bridged Bicyclo Compounds; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D003545:Cysteine / Q000032:analysis*; D003593:Cytoplasm / Q000737:chemistry; D005260:Female; D005978:Glutathione / Q000032:analysis*; D019803:Glutathione Disulfide / Q000032:analysis*; D006801:Humans; D042541:Intracellular Space / Q000737:chemistry*; D057230:Limit of Detection; D008297:Male; D018482:Muscle, Skeletal / Q000166:cytology*; D032446:Myoblasts / Q000737:chemistry; D010084:Oxidation-Reduction
chemical_list: D001643:Bridged Bicyclo Compounds; D005978:Glutathione; D003545:Cysteine; D019803:Glutathione Disulfide; C028381:monobromobimane