title: Cytokine mRNA expression in mucosal biopsies from German shepherd dogs with small intestinal enteropathies.
abstract: German shepherd dogs (GSD) are predisposed to enteropathies such as inflammatory bowel disease (IBD) and small intestinal bacterial overgrowth (SIBO). The present study examined the role of cytokines in the immunopathogenesis of both conditions. Duodenal mucosal biopsies were taken from GSDs with small intestinal enteropathies (group 1; N = 16) or control dogs (group 2, N = 12). IL-2, IL-4, IL-5, IL-10, IL-12p40, IFN-gamma, TNF-alpha, and TGF-beta1 mRNA expression was determined by semiquantitative reverse transcriptase polymerase chain reaction. IL-2, IL-5, IL-12p40, TNF-alpha, and TGF-beta1 mRNA expression in group 1 dogs was significantly greater than in group 2 dogs (all P<0.01), but there were no significant differences between dogs with IBD or SIBO. Further, antibiotic treatment in five dogs with SIBO, resulted in reduced TNF-alpha and TGF-beta1 mRNA expression (P<0.05). Such alterations in cytokine mRNA expression suggest heightened immune responses within the duodenal mucosa in GSDs with either SIBO or IBD.
authors.affiliation: Department of Clinical Veterinary Science, University of Bristol, UK.
authors.forename: A J
authors.initials: AJ
authors.lastname: German
authors.forename: C R
authors.initials: CR
authors.lastname: Helps
authors.forename: E J
authors.initials: EJ
authors.lastname: Hall
authors.forename: M J
authors.initials: MJ
authors.lastname: Day
mesh_terms: D000818:Animals; D001424:Bacterial Infections / Q000276:immunology / Q000473:pathology / Q000662:veterinary*; D001706:Biopsy; D016207:Cytokines / Q000096:biosynthesis*; D004283:Dog Diseases / Q000276:immunology* / Q000473:pathology; D004285:Dogs; D004378:Duodenal Diseases / Q000276:immunology / Q000473:pathology / Q000662:veterinary*; D005260:Female; D015870:Gene Expression; D015212:Inflammatory Bowel Diseases / Q000276:immunology / Q000473:pathology / Q000662:veterinary*; D007413:Intestinal Mucosa / Q000276:immunology* / Q000473:pathology; D008297:Male; D012333:RNA, Messenger / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000379:methods
chemical_list: D016207:Cytokines; D012333:RNA, Messenger