Progressive nuclear factor-κB activation resistant to inhibition by contraction and curcumin in mdx mice

William J. Durham, Sandrine Arbogast, Eric Gerken, Yi Ping Li, Michael B. Reid

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

Skeletal muscle of patients with Duchenne-type muscular dystrophy and mdx mice exhibits elevated activity of the transcription factor NF-κB (nuclear factor-κB), which may play a role in muscle catabolism. We measured skeletal muscle NF-κB activity in mdx mice at three ages (10 days, 4 weeks, and 8 weeks) to test the hypothesis that NF-κB activity is elevated in an age-dependent manner in these mice. In addition, we tested the hypothesis that NF-κB activity could be reduced in mdx skeletal muscle by dietary supplementation with curcumin (1% w/v) or by fatiguing muscle contractions. We found that NF-κB activity was elevated at 4 and 8 weeks of age but not at 10 days, and was resistant to inhibition by either fatiguing contractions or dietary curcumin. We conclude that NF-κB activity is elevated in dystrophic skeletal muscle in an age-related manner and is resistant to inhibition by physiological and pharmacological means. These findings are consistent with a role for NF-κB activation in dystrophic muscle wasting but suggest that predicted interventions such as exercise or inhibitors of the early steps in the NF-κ activation pathway may not be effective and that targeted research is needed to identify novel therapeutic strategies.

Original languageEnglish (US)
Pages (from-to)298-303
Number of pages6
JournalMuscle and Nerve
Volume34
Issue number3
DOIs
StatePublished - Sep 1 2006

Keywords

  • Muscle damage
  • Muscular dystrophy
  • Supplement
  • Transcription factor

ASJC Scopus subject areas

  • Physiology
  • Clinical Neurology
  • Cellular and Molecular Neuroscience
  • Physiology (medical)

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