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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 682 - 693 (12page)
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Background/Aims: Intestinal barrier dysfunction is a hallmark of inflammatory bowel diseases (IBDs) such as ulcerative colitis. This dysfunction is caused by increased permeability and the loss of tight junctions in intestinal epithelial cells. The aim of this study was to investigate whether estradiol treatment reduces colonic permeability, tight junction disruption, and inflammation in an azoxymethane (AOM)/dextran sodium sulfate (DSS) colon cancer mouse model. Methods: The effects of 17β-estradiol (E2) were evaluated in ICR male mice 4 weeks after AOM/DSS treatment. Histological damage was scored by hematoxylin and eosin staining and the levels of the colonic mucosal cytokine myeloperoxidase (MPO) were assessed by enzyme-linked immunosorbent assay (ELISA). To evaluate the effects of E2 on intestinal permeability, tight junctions, and inflammation, we performed quantitative real-time polymerase chain reaction and Western blot analysis. Furthermore, the expression levels of mucin 2 (MUC2) and mucin 4 (MUC4) were measured as target genes for intestinal permeability, whereas zonula occludens 1 (ZO-1), occludin (OCLN), and claudin 4 (CLDN4) served as target genes for the tight junctions. Results: The colitis-mediated induced damage score and MPO activity were reduced by E2 treatment (p<0.05). In addition, the mRNA expression levels of intestinal barrier-related molecules (i.e., MUC2, ZO-1, OCLN, and CLDN4) were decreased by AOM/DSS-treatment; furthermore, this inhibition was rescued by E2 supplementation. The mRNA and protein expression of inflammation-related genes (i.e., KLF4, NF-κB, iNOS, and COX-2) was increased by AOM/DSS-treatment and ameliorated by E2. Conclusions: E2 acts through the estrogen receptor β signaling pathway to elicit anti-inflammatory effects on intestinal barrier by inducing the expression of MUC2 and tight junction molecules and inhibiting pro-inflammatory cytokines.
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참고문헌 (43)
참고문헌 신청
정규원 / 2017 / Cancer Statistics in Korea: Incidence, Mortality, Survival, and Prevalence in 2014 / Cancer Research and Treatment 49(2):292~305
Wehkamp J / 2008 / Barrier dysfunction due to distinct defensin deficiencies in small intestinal and colonic Crohn’s disease / Mucosal Immunol 1(Suppl 1):S67~S74
이성희 / 2015 / Intestinal Permeability Regulation by Tight Junction: Implication on Inflammatory Bowel Diseases / Intestinal research 13(1):11~18
Yoo Jin Lee / 2018 / Inflammation, Impaired Motility, and Permeability in a Guinea Pig Model of Postoperative Ileus / Journal of Neurogastroenterology and Motility (JNM) 24(1):147~158
Kim JJ / 2016 / Increased TRPV1 and PAR2 mRNA expression levels are associated only with the esophageal reflux symptoms, but not with the extraesophageal reflux symptoms / Medicine (Baltimore) 95:e4387
Wehkamp J / 2008 / Barrier dysfunction due to distinct defensin deficiencies in small intestinal and colonic Crohn’s disease / Mucosal Immunol 1(Suppl 1):S67~S74
이성희 / 2015 / Intestinal Permeability Regulation by Tight Junction: Implication on Inflammatory Bowel Diseases / Intestinal research 13(1):11~18
Yoo Jin Lee / 2018 / Inflammation, Impaired Motility, and Permeability in a Guinea Pig Model of Postoperative Ileus / Journal of Neurogastroenterology and Motility (JNM) 24(1):147~158
Kim JJ / 2016 / Increased TRPV1 and PAR2 mRNA expression levels are associated only with the esophageal reflux symptoms, but not with the extraesophageal reflux symptoms / Medicine (Baltimore) 95:e4387
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