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Valproic acid attenuates inflammation in experimental autoimmune neuritis

  • Z. ZhangEmail author
  • Z. Y. Zhang
  • U. Fauser
  • H. J. Schluesener
Research Article

Abstract.

Valproic acid (VPA) is a short-chain branched fatty with anti-inflammatory, neuro-protective and axon-remodeling effects. We investigated the effects of VPA in rats in which experimental autoimmune neuritis (EAN) had been induced (EAN rats). VPA (300 mg/kg, intraperitoneally) administration to EAN rats once daily immediately following immunization significantly suppressed mRNA levels of interferon-γ, tumor necrosis factor-α, interleukin (IL)-1β, IL-4, IL-6 and IL-17 in the lymph nodes of EAN rats. In peripheral blood and sciatic nerves of EAN rats, Foxp3+ cells were increased but IL-17+ cells were decreased during VPA treatment. Furthermore, suppressive and therapeutic treatment with VPA greatly attenuated both accumulation of macrophages, T cells and B cells, and demyelination in sciatic nerves, and greatly reduced the severity and duration of EAN. In summary, our data demonstrated that VPA could effectively suppress inflammation in EAN, suggesting that VPA could be a potent candidate for treatment of autoimmune neuropathies.

Keywords.

Experimental autoimmune neuritis valproic acid T helper type 17 cells regulatory T cells Guillain-Barré syndrome 

Copyright information

© Birkhäuser Verlag, Basel 2008

Authors and Affiliations

  • Z. Zhang
    • 1
    Email author
  • Z. Y. Zhang
    • 1
  • U. Fauser
    • 1
  • H. J. Schluesener
    • 1
  1. 1.Institute of Brain ResearchUniversity of TuebingenTuebingenGermany

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