title: Isoprostanes in dystrophinopathy: Evidence of increased oxidative stress.
abstract: Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) are degenerative disorders of muscle. Although the mechanisms underlying muscle degeneration are still uncertain, oxidative-damage has been proposed to play a key role. Isoprostanes are markers of free radical-catalyzed lipid peroxidation; the aim of our study was to evaluate plasma isoprostane levels in group of patients affected by Duchenne and Becker muscular dystrophies. PF(2)-isoprostane levels were measured by colorimetric enzyme immunoassay in the plasma of 17 patients with DMD and 24 with BMD. When compared to a group of healthy controls, affected patients showed significantly higher plasma levels of isoprostanes (p=0.001). When patients were stratified according to the clinical diagnosis, isoprostane levels were not statistically different between DMD and BMD patients. In conclusion whether the condition of oxidative stress found in plasma depends on the degenerative process occurring in muscles or on different mechanisms, such as the release of myoglobin in the blood, should be ascertained. However, our study confirms that oxidative stress findings in DMD/BMD patients are effectively present at the plasma levels. The condition of oxidative stress might act as an adjunctive cause of extra-muscular cell damage to which these patients are exposed for their entire life.
authors.affiliation: Department of Pediatrics, Obstetrics and Reproductive Medicine, Viale Mario Bracci 36, 53100 Siena, Italy.
authors.forename: Salvatore
authors.initials: S
authors.lastname: Grosso
authors.forename: Serafina
authors.initials: S
authors.lastname: Perrone
authors.forename: Mariangela
authors.initials: M
authors.lastname: Longini
authors.forename: Carlo
authors.initials: C
authors.lastname: Bruno
authors.forename: Claudio
authors.initials: C
authors.lastname: Minetti
authors.forename: Diego
authors.initials: D
authors.lastname: Gazzolo
authors.forename: Paolo
authors.initials: P
authors.lastname: Balestri
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Buonocore
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D028421:Isoprostanes / Q000097:blood*; D008297:Male; D020388:Muscular Dystrophy, Duchenne / Q000097:blood*; D018384:Oxidative Stress / Q000502:physiology*
chemical_list: D028421:Isoprostanes