Journal of Molecular Neuroscience

, Volume 42, Issue 1, pp 80–88 | Cite as

The Role of Transient Receptor Potential Vanilloid 1 (Trpv1) Receptors in Dextran Sulfate-Induced Colitis in Mice

  • Istvan Szitter
  • Gabor Pozsgai
  • Katalin Sandor
  • Krisztian Elekes
  • Agnes Kemeny
  • Aniko Perkecz
  • Janos Szolcsanyi
  • Zsuzsanna Helyes
  • Erika PinterEmail author


The aim of this study was to investigate the involvement of transient receptor potential vanilloid 1 (TRPV1) receptors in oral dextran sulfate sodium-induced (DSS) colitis using TRPV1 knockout mice and their wild-type C57BL/6 counterparts. DSS (2% or 5%) was administered orally ad libitum for 7 days; the controls received tap water. Animal weight, stool consistency, and blood content were scored every day to calculate the disease activity index (DAI). After sacrificing the mice on day 7, the colons were cut into three equal segments (proximal, intermediate, and distal) for histology, myeloperoxidase (MPO), and cytokine measurements. In the 2% DSS-treated group, the lack of TRPV1 receptors decreased the DAI. Each colon segment of wild-type animals showed more than two-fold increase of MPO activity and more severe histological changes compared to the knockouts. This difference was not observed in case of 5% DSS, when extremely severe inflammation occurred in both groups. IL-1β production was not altered by the absence of TRPV1. In conclusion, activation of TRPV1 channels enhances the clinical symptoms, histopathological changes, and neutrophil accumulation induced by 2% DSS. Elucidating the modulator role of TRPV1 channels in inflammatory bowel diseases may contribute to the development of novel anti-inflammatory drugs for their therapy.


Capsaicin-sensitive sensory nerves Disease activity index Histopathological scoring IL-1β Myeloperoxidase (MPO) activity Neurogenic inflammation 



This work was supported by grants OTKA K73044 and NK78059 of Science Please! and the Research Teams on Innovation program (SROP-4.2.2/08/1/2008-0011) grants ETT 03-380/2009 and 04-364/2009.

Z. Helyes was supported by the Janos Bolyai Postdoctoral Research Fellowship.


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Istvan Szitter
    • 1
  • Gabor Pozsgai
    • 1
  • Katalin Sandor
    • 1
  • Krisztian Elekes
    • 1
  • Agnes Kemeny
    • 1
  • Aniko Perkecz
    • 1
  • Janos Szolcsanyi
    • 1
  • Zsuzsanna Helyes
    • 1
  • Erika Pinter
    • 1
    Email author
  1. 1.Department of Pharmacology and Pharmacotherapy, Faculty of MedicineUniversity of PécsPécs, Szigeti u. 12Hungary

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