Acute effects of carprofen and meloxicam on canine gastrointestinal permeability and mucosal absorptive capacity

Melanie Craven, Marge L. Chandler, Jörg M. Steiner, Ashkan Farhadi, Elizabeth Welsh, Kathryn Pratschke, Darren J. Shaw, David A. Williams

Research output: Contribution to journalArticlepeer-review


Background: Nonsteroidal anti-inflammatory drugs (NSAIDs) are frequently prescribed to dogs for their analgesic, antipyretic, and anti-inflammatory properties. Their beneficial actions can be offset by gastrointestinal (GI) toxicosis. Endoscopy has traditionally been employed to detect GI lesions, but alterations in GI permeability precede the development of mucosal damage. Hypothesis: Carprofen and meloxicam alter GI permeability and mucosal absorptive capacity of dogs. Animals: Twenty adult dogs treated with an NSAID for >7 days were evaluated by permeability tests while receiving either carprofen (10 dogs) or meloxicam (10 dogs). Methods: Prospective, longitudinal observational study. A 6-sugar permeability test (sucrose, lactulose, rhamnose, 3-O-methyl-D-glucose, D-xylose, and sucralose) was performed on the day before NSAID treatment, and after 3 and 8 days of treatment. Results: There were no significant differences in the urinary recovery ratios of lactulose : rhamnose, D-xylose : 3-O-methyl-D-glucose, or sucralose recovery within either group at any time during the study. Sucrose permeability in the meloxicam group did not alter significantly over time. However, sucrose permeability in the carprofen group decreased significantly by day 3 (P = .049) and increased again by day 8 (P = .049), to a level that was not significantly different to permeability before treatment (P = .695). Conclusions and Clinical Importance: The absence of increased GI permeability and diminished mucosal absorptive capacity in this group of dogs does not support the development of acute GI toxicosis during treatment with either meloxicam or carprofen.

Original languageEnglish (US)
Pages (from-to)917-923
Number of pages7
JournalJournal of veterinary internal medicine
Issue number5
StatePublished - Sep 2007


  • Dogs
  • Intestinal function
  • Mucosal damage
  • Nonsteroidal
  • Sugar permeability

ASJC Scopus subject areas

  • General Veterinary


Dive into the research topics of 'Acute effects of carprofen and meloxicam on canine gastrointestinal permeability and mucosal absorptive capacity'. Together they form a unique fingerprint.

Cite this