PMID- 14569059 OWN - NLM STAT- MEDLINE DCOM- 20040211 LR - 20171116 IS - 0022-3565 (Print) IS - 0022-3565 (Linking) VI - 308 IP - 1 DP - 2004 Jan TI - Oral treatment with recombinant human interleukin-11 improves mucosal transport in the colon of human leukocyte antigen-B27 transgenic rats. PG - 206-13 AB - Recombinant human interleukin (IL)-11 is a pleiotropic cytokine with anti-inflammatory activity. The objective of the study was to investigate whether oral treatment with rhIL-11 improves colonic epithelial dysfunction in the human leukocyte antigen (HLA)-B27 transgenic rat model of spontaneous chronic inflammation. Experiments were performed using adult male HLAB27 rats, whereas healthy nontransgenic F344 rats served as controls. Enteric-coated rhIL-11 multi-particles (equivalent to 500 microg/kg rhIL11) or placebo (formulation lacking rhIL-11) were administrated orally on alternate days for 2 weeks to HLA-B27 or F344 rats. Stool character was observed daily during the treatment period. Animals were euthanized at the end of treatment and colonic inflammation was evaluated be measuring tissue myeloperoxidase (MPO) activity. Epithelial transport in isolated colonic mucosal sheets was studied in modified Ussing chambers. Oral treatment of HLA-B27 rats with rhIL-11 reduced MPO activity in the colon and suppressed the clinical signs of diarrhea. The electrophysiological characteristics of mucosal transport were improved in the HLA-B27 rats treated with rhIL-11 compared with placebo. After rhIL-11 treatment the basal transepithelial resistance and the estimated paracellular resistance were significantly increased, neurally mediated secretory responses to electrical field stimulation were improved, and cholinoceptor sensitivity was normalized. Treatment with rhIL-11 had no significant effect on basal short circuit current and the maximal secretory response to carbachol or substance P. Our data demonstrate that oral rhIL-11 therapy is associated with suppression of mucosal inflammation and a concomitant improvement of epithelial resistance and neurally mediated secretion in a model of chronic HLA-B27 colitis. FAU - Venkova, Kalina AU - Venkova K AD - Oklahoma Foundation for Digestive Research Basic Science Laboratories, Veterans Affairs Medical Center, Oklahoma City, Oklahoma 73104, USA. FAU - Keith, James C Jr AU - Keith JC Jr FAU - Greenwood-Van Meerveld, Beverley AU - Greenwood-Van Meerveld B LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20031020 PL - United States TA - J Pharmacol Exp Ther JT - The Journal of pharmacology and experimental therapeutics JID - 0376362 RN - 0 (HLA-B27 Antigen) RN - 0 (Interleukin-11) RN - 0 (Recombinant Proteins) RN - 33507-63-0 (Substance P) RN - 8Y164V895Y (Carbachol) RN - EC 1.11.1.7 (Peroxidase) RN - HM5641GA6F (oprelvekin) SB - IM MH - Animals MH - Biological Transport MH - Carbachol/pharmacology MH - Colon/*drug effects/enzymology/metabolism MH - Drug Interactions MH - HLA-B27 Antigen/genetics/*immunology MH - Humans MH - Interleukin-11/*pharmacology MH - Intestinal Mucosa MH - Male MH - Mucous Membrane MH - Peroxidase/metabolism MH - Rats MH - Rats, Inbred F344 MH - Recombinant Proteins/*pharmacology MH - Substance P/pharmacology EDAT- 2003/10/22 05:00 MHDA- 2004/02/12 05:00 CRDT- 2003/10/22 05:00 PHST- 2003/10/22 05:00 [pubmed] PHST- 2004/02/12 05:00 [medline] PHST- 2003/10/22 05:00 [entrez] AID - jpet.103.058701 [pii] AID - 10.1124/jpet.103.058701 [doi] PST - ppublish SO - J Pharmacol Exp Ther. 2004 Jan;308(1):206-13. doi: 10.1124/jpet.103.058701. Epub 2003 Oct 20.