title: CSF isoprostane levels are a biomarker of oxidative stress in multiple sclerosis.
abstract: OBJECTIVE
  To investigate the potential of 8-iso-prostaglandin F2α (8-iso-PGF2α) as a biomarker for disease activity and oxidative stress in the CSF of patients with multiple sclerosis (MS).
  
  
  METHODS
  The isoprostane 8-iso-PGF2α is an established biomarker for in vivo oxidative stress and lipid peroxidation. We measured CSF 8-isoPGF2α levels in 231 patients with MS (74 with relapsing-remitting MS, 67 with primary progressive MS, and 90 with secondary progressive MS [SPMS]) and 40 controls using a competition ELISA.
  
  
  RESULTS
  We found increased CSF levels of 8-iso-PGF2α in patients with MS compared to controls, with the most striking values in a subgroup of patients with SPMS. Furthermore, the increase in 8-iso-PGF2α correlated with other parameters of lipid peroxidation as well as with a decrease in the total antioxidant status in the MS CSF samples.
  
  
  CONCLUSIONS
  Our study demonstrates that CSF levels of 8-iso-PGF2α may serve as a biomarker of oxidative stress in MS. Further investigation will help establish the pathologic and clinical significance of our preliminary findings.
authors.affiliation: Tisch MS Research Center of New York, New York, NY.
authors.forename: Fozia
authors.initials: F
authors.lastname: Mir
authors.affiliation: Tisch MS Research Center of New York, New York, NY.
authors.forename: Donald
authors.initials: D
authors.lastname: Lee
authors.affiliation: Tisch MS Research Center of New York, New York, NY.
authors.forename: Hetal
authors.initials: H
authors.lastname: Ray
authors.affiliation: Tisch MS Research Center of New York, New York, NY.
authors.forename: Saud A
authors.initials: SA
authors.lastname: Sadiq