title: STAT6 expression and IL-13 production in association with goblet cell hyperplasia and worm expulsion of Gymnophalloides seoi from C57BL/6 mice.
abstract: In intestinal helminth infections, Th2 immune respones are generally associated with mucin secretion for worm expulsion from the host intestine. In particular, IL-4 and IL-13 are the important cytokines related with intestinal mucus production via STAT6 signalling in nematode infections. However, this perspective has never been studied in Gymnophalloides seoi infection. The present study aimed to observe the STAT6 signalling and cytokine responses in C57BL/6 mice, a mouse strain resistant to infection with this trematode. The results showed that worm expulsion occurred actively during days 1-2 post-infection (PI), when goblet cells began to proliferate in the small intestine. The STAT6 gene expression in the mouse spleen became remarkable from day 2 PI. Moreover, G. seoi infection induced a significant increase of IL-13 from day 4 PI in the spleen of infected mice. Our results suggested that goblet cell hyperplasia and worm expulsion in G. seoi-infected mice should be induced by STAT6 signalling, in which IL-13 may be involved as a dominant triggering cytokine.
authors: Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul 110-799, Korea.
authors: Jin-Joo
authors: JJ
authors: Lee
authors: Donghee
authors: D
authors: Kim
authors: Kyoung-Ho
authors: KH
authors: Pyo
authors: Min-Ki
authors: MK
authors: Kim
authors: Hyo-Jin
authors: HJ
authors: Kim
authors: Jong-Yil
authors: JY
authors: Chai
authors: Eun-Hee
authors: EH
authors: Shin
mesh_terms: D000818:Animals; D049896:Crassostrea; D005260:Female; D020397:Goblet Cells / Q000473:pathology*; D006965:Hyperplasia / Q000473:pathology; D018793:Interleukin-13 / Q000378:metabolism*; D015847:Interleukin-4 / Q000378:metabolism*; D007421:Intestine, Small / Q000276:immunology; D058488:Metacercariae; D051379:Mice; D008810:Mice, Inbred C57BL; D050800:STAT6 Transcription Factor / Q000378:metabolism*; D015398:Signal Transduction; D013047:Specific Pathogen-Free Organisms; D013154:Spleen / Q000276:immunology; D014200:Trematoda / Q000276:immunology*; D014235:Trichinellosis / Q000276:immunology* / Q000469:parasitology
chemical_list: D018793:Interleukin-13; D050800:STAT6 Transcription Factor; C494100:Stat6 protein, mouse; D015847:Interleukin-4
keywords: Gymnophalloides seoi; IL-13; STAT6; goblet cell hyperplasia; intestinal trematode; worm expulsion