title: The syringe nitroxide free radical--Part II.
abstract: Some plastic syringes introduce a nitroxide free radical into the fluids they contain. The EPR spectrum shows a triplet with aN = 17.0 +/- 0.1 G in plasma. We report here that this nitroxide/hydroxylamine couple serves as an antioxidant system, whose redox potential appears to be between that of vitamin C and vitamin E. This adventitious antioxidant can alter the course of free radical processes.
authors.affiliation: ESR Center, College of Medicine, University of Iowa, Iowa City 52242.
authors.forename: G R
authors.initials: GR
authors.lastname: Buettner
authors.forename: M K
authors.initials: MK
authors.lastname: Sharma
mesh_terms: D001205:Ascorbic Acid / Q000737:chemistry; D005609:Free Radicals; D009589:Nitrogen Oxides / Q000737:chemistry*; D010969:Plastics / Q000737:chemistry*; D013594:Syringes
chemical_list: D005609:Free Radicals; D009589:Nitrogen Oxides; D010969:Plastics; D001205:Ascorbic Acid