Advertisement

Inflammation Research

, Volume 51, Issue 11, pp 522–531 | Cite as

RDP58, a locally active TNF inhibitor, is effective in the dextran sulphate mouse model of chronic colitis

  • S. Murthy
  • A. Flanigan
  • D. Coppola
  • R. Buelow

Abstract.

Objective and design: RDP58 is a novel anti-inflammatory peptide that inhibits TNF synthesis and upregulates heme oxygenase-1. RDP58 therapy was evaluated in the dextran sodium sulphate (DSS) model of chronic colitis.¶Material: Colitis was induced by giving DSS to mice (n = 8 animals/group). Toxicity studies were done in Rhesus monkeys (n = 5), dogs (n = 3) and mice (n = 10).¶Treatment: In colitis, mice were treated with p.o. vehicle (saline), RDP58 (5 and 10 mg/kg/day) or 5-ASA (50 mg/kg/day).¶Methods: Disease activity index (DAI) was used as the endpoint of efficacy.¶Results: RDP58 therapy significantly reduced DAI and histological scores in all animals. DAI scores in RDP58 treated animals declined faster than 5-ASA. RDP58 at 5 or 10 mg/kg/day significantly reduced DAI compared to 5-ASA. RDP58 significantly reduced acute, chronic and total inflammation scores. It enhanced re-epithelialization by reducing crypt scores. RDP58 was not bioavailable and was well tolerated.¶Conclusions: Therapeutic efficacy of RDP58 combined with a lack of bioavailibility and toxicity suggest that RDP58 may be a promising new therapeutic for IBD.

Key words: RDP58 – Efficacy of RDP58 in colitis – TNFα inhibitors – dextran sulphate-induced colitis – orally active TNFα inhibitor – RDP58 bioavailibility and toxicity 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Birkhäuser Verlag, 2002

Authors and Affiliations

  • S. Murthy
    • 1
  • A. Flanigan
    • 1
  • D. Coppola
    • 2
  • R. Buelow
    • 3
  1. 1.Division of Gastroenterology and Hepatology, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA 19102-1192, USA, Fax: ++ 215 762 3722, e-mail: s.Murthy@drexel.eduUS
  2. 2.Department of Pathology, University of South FloridaUS
  3. 3.Sangstat, 6300 Dumbarton Circle, Fremont, CA 94555, USAUS

Personalised recommendations