| Erythropoietin protects intestinal epithelial barrier function and lowers the incidence of experimental neonatal necrotizing enterocolitis. | |
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MedLine Citation:
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PMID: 21262973 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The impermeant nature of the intestinal barrier is maintained by tight junctions (TJs) formed between adjacent intestinal epithelial cells. Disruption of TJs and loss of barrier function are associated with a number of gastrointestinal diseases, including neonatal necrotizing enterocolitis (NEC), the leading cause of death from gastrointestinal diseases in preterm infants. Human milk is protective against NEC, and the human milk factor erythropoietin (Epo) has been shown to protect endothelial cell-cell and blood-brain barriers. We hypothesized that Epo may also protect intestinal epithelial barriers, thereby lowering the incidence of NEC. Our data demonstrate that Epo protects enterocyte barrier function by supporting expression of the TJ protein ZO-1. As immaturity is a key factor in NEC, Epo regulation of ZO-1 in the human fetal immature H4 intestinal epithelial cell line was examined and demonstrated Epo-stimulated ZO-1 expression in a dose-dependent manner through the PI3K/Akt pathway. In a rat NEC model, oral administration of Epo lowered the incidence of NEC from 45 to 23% with statistical significance. In addition, Epo treatment protected intestinal barrier function and prevented loss of ZO-1 at the TJs in vivo. These effects were associated with elevated Akt phosphorylation in the intestine. This study reveals a novel role of Epo in the regulation of intestinal epithelial TJs and barrier function and suggests the possible use of enteral Epo as a therapeutic agent for gut diseases. |
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Authors:
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Sheng-Ru Shiou; Yueyue Yu; Sangzi Chen; Mae J Ciancio; Elaine O Petrof; Jun Sun; Erika C Claud |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't Date: 2011-01-24 |
Journal Detail:
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Title: The Journal of biological chemistry Volume: 286 ISSN: 1083-351X ISO Abbreviation: J. Biol. Chem. Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-04-04 Completed Date: 2011-07-19 Revised Date: 2012-04-09 |
Medline Journal Info:
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Nlm Unique ID: 2985121R Medline TA: J Biol Chem Country: United States |
Other Details:
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Languages: eng Pagination: 12123-32 Citation Subset: IM |
Affiliation:
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Department of Pediatrics, Section of Neonatology, University of Chicago, Chicago, IL 60637, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Animals, Newborn Cell Line, Tumor Disease Models, Animal Electric Impedance Enterocolitis, Necrotizing / drug therapy* Enterocytes / cytology, drug effects, metabolism Erythropoietin / pharmacology*, therapeutic use Fluorescent Antibody Technique Humans Immunoblotting Intestinal Mucosa / cytology, metabolism* Intestines / cytology*, drug effects*, metabolism Membrane Proteins / genetics, metabolism Phosphatidylinositol 3-Kinases / antagonists & inhibitors, metabolism Phosphoproteins / genetics, metabolism Proto-Oncogene Proteins c-akt / antagonists & inhibitors, metabolism RNA Interference Rats Tight Junctions / drug effects, metabolism |
| Grant Support | |
ID/Acronym/Agency:
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DK42086/DK/NIDDK NIH HHS; F32 HD062144-01A1/HD/NICHD NIH HHS; HD055237/HD/NICHD NIH HHS; HD062144-01A1/HD/NICHD NIH HHS; R01 HD059123/HD/NICHD NIH HHS; R21 AT004044/AT/NCCAM NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Membrane Proteins; 0/Phosphoproteins; 0/zonula occludens-1 protein; 11096-26-7/Erythropoietin; EC 2.7.1.-/Phosphatidylinositol 3-Kinases; EC 2.7.11.1/Proto-Oncogene Proteins c-akt |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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