Adreno-leukodystrophy: Oxidative stress of mice and men

James M. Powers, Zhengtong Pei, Ann K. Heinzer, Rebecca Deering, Ann B. Moser, Hugo W. Moser, Paul A Watkins, Kirby D. Smith

Research output: Contribution to journalArticle

Abstract

X-linked adreno-leukodystrophy is a progressive, systemic peroxisomal disorder that affects primarily nervous system myelin and axons as well as the adrenal cortex. Several divergent clinical phenotypes can occur in the same family; thus, there is no correlation between the clinical phenotype and the mutation in the ABCD1 gene in this disease. The most urgent and unresolved clinical issue is the fulminant inflammatory (immune) demyelination of the central nervous system in which a variety of cellular participants, cytokines, and chemokines are noted. A knockout mouse model exhibits mitochondrial deficits and axonal degeneration, but not inflammatory demyelination. To determine whether oxidative stress and damage might play a pathogenic role, we assessed standard biochemical and immunohistochemical markers of such activity both in our knockout mouse model and patients. We find that oxidative stress, as judged by increased immunoreactivity for the mitochondrial manganese-superoxide dismutase, is present in the knockout mouse liver, adrenal cortex, and renal cortex, tissues that normally express high levels of ABCD1 but no evidence of oxidative damage. The brain does not exhibit either oxidative stress or damage. On the other hand, both the human adrenal cortex and brain show evidence of oxidative stress (e.g. hemoxygenase-1 and manganese-superoxide dismutase) and oxidative damage, particularly from lipid peroxidation (4-hydroxynonenal and malondialdehyde). The presence of nitrotyrosylated proteins is strong circumstantial evidence for the participation of the highly toxic peroxynitrite molecule, whereas the demonstration of interferon gamma and interleukin-12 is indicative of a TH1 response in the inflammatory demyelinative lesions of the cerebral phenotype. These differences between the adreno-leukodystrophy mouse and human patients are intriguing and may provide a clue to the phenotypic divergence in this disease.

Original languageEnglish (US)
Pages (from-to)1067-1079
Number of pages13
JournalJournal of Neuropathology and Experimental Neurology
Volume64
Issue number12
DOIs
StatePublished - Dec 2005

Fingerprint

Adrenal Cortex
Oxidative Stress
Knockout Mice
Demyelinating Diseases
Phenotype
Superoxide Dismutase
Peroxisomal Disorders
Peroxynitrous Acid
Poisons
Brain
Interleukin-12
Myelin Sheath
Malondialdehyde
Chemokines
Nervous System
Lipid Peroxidation
Interferon-gamma
Axons
Central Nervous System
Biomarkers

Keywords

  • Fatty acids
  • Knockout
  • Mitochondria
  • Oxidative stress
  • Peroxisome
  • X-linked adreno-leukodystrophy

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Neuroscience(all)

Cite this

Adreno-leukodystrophy : Oxidative stress of mice and men. / Powers, James M.; Pei, Zhengtong; Heinzer, Ann K.; Deering, Rebecca; Moser, Ann B.; Moser, Hugo W.; Watkins, Paul A; Smith, Kirby D.

In: Journal of Neuropathology and Experimental Neurology, Vol. 64, No. 12, 12.2005, p. 1067-1079.

Research output: Contribution to journalArticle

Powers, James M. ; Pei, Zhengtong ; Heinzer, Ann K. ; Deering, Rebecca ; Moser, Ann B. ; Moser, Hugo W. ; Watkins, Paul A ; Smith, Kirby D. / Adreno-leukodystrophy : Oxidative stress of mice and men. In: Journal of Neuropathology and Experimental Neurology. 2005 ; Vol. 64, No. 12. pp. 1067-1079.
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