title: Proton Spectroscopy in a Cross-Section of HIV-Positive Asymptomatic Patients Receiving Immediate Compared with Deferred Zidovudine (Concorde Study).
abstract: The purpose of this study was to examine by proton spectroscopy for any difference in cerebral metabolites in patients taking part in the Concorde study (comparing the efficacy of immediate versus deferred treatment with zidovudine on asymptomatic HIV infected individuals). Forty seven HIV positive male patients [29 immediate, 18 deferred zidovudine] were examined in the last 9 months of the therapeutic trial. Magnetic resonance imaging and proton spectroscopy were performed at 1.5 Tesla using a single voxel placed in the parieto-occipital white matter. No significant difference was found in metabolite ratios comparing immediate versus deferred zidovudine (NA/NA+Cho+Cr 0.52 vs. 0.52). High quality spectra were acquired in relatively large numbers of patients and logistically spectroscopy may be applied to clinical therapeutic studies.
authors.affiliation: , Mortimer Street, London, W1N 8AA, UK.
authors.forename: M A
authors.initials: MA
authors.lastname: Hall-Craggs
authors.forename: I G
authors.initials: IG
authors.lastname: Williams
authors.forename: I D
authors.initials: ID
authors.lastname: Wilkinson
authors.forename: M
authors.initials: M
authors.lastname: Paley
authors.forename: R J
authors.initials: RJ
authors.lastname: Chinn
authors.forename: W K
authors.initials: WK
authors.lastname: Chong
authors.forename: B E
authors.initials: BE
authors.lastname: Kendall
authors.forename: M J
authors.initials: MJ
authors.lastname: Harrison
authors.forename: T
authors.initials: T
authors.lastname: Baldeweg
authors.forename: K
authors.initials: K
authors.lastname: Pugh
authors.forename: M
authors.initials: M
authors.lastname: Riccio
authors.forename: J
authors.initials: J
authors.lastname: Catalan
authors.forename: I V
authors.initials: IV
authors.lastname: Weller
mesh_terms: D015658:HIV Infections / Q000188:drug therapy; D006679:HIV Seropositivity / Q000188:drug therapy; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D011522:Protons; D013057:Spectrum Analysis; D015215:Zidovudine / Q000627:therapeutic use
chemical_list: D011522:Protons; D015215:Zidovudine