Protective effect of bone marrow mesenchymal stem cells in intestinal barrier permeability after heterotopic intestinal transplantation
| Autor: | Tao Liu, Hong-Li Song, Ben-Juan Wu, Yang Yang, Wen Zhang, Nan-Nan Fu, Zhong-yang Shen |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Male
Pathology medicine.medical_specialty Time Factors Transplantation Heterotopic medicine.medical_treatment Biology Mesenchymal Stem Cell Transplantation Occludin Permeability Tight Junctions Flow cytometry Andrology Microscopy Electron Transmission Intestinal mucosa Rats Inbred BN Intestine Small medicine Animals Lactic Acid RNA Messenger Intestinal Mucosa Cells Cultured Bone Marrow Transplantation Tight junction medicine.diagnostic_test Graft Survival Gastroenterology General Medicine Transplantation Cytokine Rats Inbred Lew Zonula Occludens-1 Protein Cytokines Original Article Tumor necrosis factor alpha Amine Oxidase (Copper-Containing) Inflammation Mediators Diamine oxidase |
| Zdroj: | World Journal of Gastroenterology. 20:7442 |
| ISSN: | 1007-9327 |
| DOI: | 10.3748/wjg.v20.i23.7442 |
| Popis: | AIM: To explore the protective effect of bone marrow mesenchymal stem cells (BM MSCs) in the small intestinal mucosal barrier following heterotopic intestinal transplantation (HIT) in a rat model. METHODS: BM MSCs were isolated from male Lewis rats by density gradient centrifugation, cultured, and analyzed by flow cytometry. The HIT models were divided into a non-rejection group, saline-treated rejection group (via penile vein), and BM MSC–treated group (via penile vein). Intestinal mucosal barrier injury was estimated by diamine oxidase (DAO) and D-lactic acid (D-LA) expression levels. Tumor necrosis factor-α (TNF-α), interferon-γ (INF-γ), interleukin-10 (IL-10), and transforming growth factor-β (TGF-β) were detected by enzyme-linked immunosorbent assay. Ultrastructural change of tight junctions (TJs) was observed under transmission electron microscope. Expression levels of the TJ proteins occludin and zona occludens (ZO)-1, affected by the inflammatory factors, were measured using real-time polymerase chain reaction and Western blotting. RESULTS: The pathological score at each time point after surgery indicated significantly less serious injury in the BM MSCs-treated group than in the rejection group (P < 0.05). In the former, graft levels of DAO and D-LA were reduced, and TNF-α and INF-γ production was inhibited (at day 7: 10.6473 ± 0.0710 vs 17.2128 ± 0.4991, P < 0.05; 545.1506 ± 31.9416 vs 810.2637 ± 25.1175, P < 0.05). IL-10 and TGF-β production was increased greatly (at day 7: 125.7773 ± 4.7719 vs 80.3756 ± 2.5866, P < 0.05; 234.5273 ± 9.3980 vs 545.1506 ± 31.9416, P < 0.05). There was increased expression of occludin and ZO-1 protein (at day 7: 0.2674 ± 0.0128 vs 0.1352 ± 0.0142, P < 0.05; at day 5: 0.7189 ± 0.0289 vs 0.4556 ± 0.0242, P < 0.05) and mRNA (at day 7: 0.3860 ± 0.0254 vs 0.1673 ± 0.0369, P < 0.05; at day 5: 0.5727 ± 0.0419 vs 0.3598 ± 0.0242, P < 0.05). CONCLUSION: BM MSCs can improve intestinal barrier permeability, repair TJs, and increase occludin and ZO-1 protein expression. With altered cytokine levels, they can protect the intestinal mucosa after transplantation. |
| Databáze: | OpenAIRE |
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