title: Increased intestinal epithelial cell turnover and intestinal motility in Gymnophalloides seoi-infected C57BL/6 mice.
abstract: The changing patterns of goblet cell hyperplasia, intestinal epithelial cell turnover, and intestinal motility were studied in ICR and C57BL/6 mice infected with Gymnophalloides seoi (Digenea: Gymnophallidae). Whereas ICR mice retained G. seoi worms until day 7 post-infection (PI), C57BL/6 mice showed a rapid worm expulsion within day 3 PI. Immunosuppression with Depo-Medrol significantly delayed the worm expulsion in C57BL/6 mice. Goblet cell counts were increased in both strains of mice, peaking at day 1 PI in C57BL/6 mice and slowly increasing until day 7 PI in ICR mice. In C57BL/6 mice infected with G. seoi, newly proliferating intestinal epithelial cells were remarkably increased in the crypt, and the increase was the highest at day 1 PI. However, in ICR mice, newly proliferating intestinal epithelial cells increased slowly from day 1 to day 7 PI. Intestinal motility was increased in G. seoi-infected mice, and its chronological pattern was highly correlated with the worm load in both strains of mice. Meanwhile, immunosuppression of C57BL/6 mice abrogated the goblet cell proliferation, reduced the epithelial cell proliferation, and suppressed the intestinal motility. Goblet cell hyperplasia, increased intestinal epithelial cell turnover, and increased intestinal motility should be important mucosal defense mechanisms in G. seoi-infected C57BL/6 mice.
authors.affiliation: Department of Internal Medicine and Liver research Institute, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 110-744, Korea.
authors.forename: Sang Hyub
authors.initials: SH
authors.lastname: Lee
authors.affiliation: Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea.
authors.forename: Bong-Kwang
authors.initials: BK
authors.lastname: Jung
authors.affiliation: Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea.
authors.forename: Jae-Hwan
authors.initials: JH
authors.lastname: Park
authors.affiliation: Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea. ; Department of Parasitology and Tropical Medicine, Seoul National University Bundang Hospital, Seongnam 463-707, Korea.
authors.forename: Eun-Hee
authors.initials: EH
authors.lastname: Shin
authors.affiliation: Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea.
authors.forename: Jong-Yil
authors.initials: JY
authors.lastname: Chai
mesh_terms: D000818:Animals; D049109:Cell Proliferation; D004195:Disease Models, Animal; D004847:Epithelial Cells / Q000502:physiology*; D005769:Gastrointestinal Motility; D006373:Helminthiasis / Q000503:physiopathology*; D006965:Hyperplasia; D007411:Intestinal Diseases, Parasitic / Q000503:physiopathology*; D007413:Intestinal Mucosa / Q000503:physiopathology*; D008297:Male; D008810:Mice, Inbred C57BL; D008813:Mice, Inbred ICR; D014201:Trematode Infections / Q000503:physiopathology*
keywords: Gymnophalloides seoi; epithelial cell turnover; intestinal motility; worm expulsion