Emodin effects on renal ischemia/reperfusion injury after bone marrow mesenchymal stem cell transplantation
10.3969/j.issn.2095-4344.2016.14.011
- VernacularTitle:大黄素对骨髓间充质干细胞移植治疗缺血性再灌注肾损伤的影响
- Author:
Zhong LI
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2016;20(14):2052-2058
- CountryChina
- Language:Chinese
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Abstract:
BACKGROUND:Studies have shown that emodin protects against intestinal ischemia-reperfusion injury by inhibiting the release of inflammatory factors. OBJECTIVE:To investigate the effect of emodin on renal ischemia/reperfusion injury after bone marrow mesenchymal stem cel transplantation. METHODS:Forty Sprague-Dawley rats were randomized into five groups (n=8 per group):sham group, model group (renal ischemia/reperfusion injury group), bone marrow mesenchymal stem cel group (cel transplantation group), low-dose emodin group, high-dose emodin group. Rats in the latter four groups were pretreated with or without different concentrations (30 and 60 mg/kg) of emodin for 7 days, and then were subjected to clamping bilateral renal pedicles for 45 minutes, fol owed by injection of 1 mL bone marrow mesenchymal stem cel suspension. Six hours after reperfusion, the pathological changes of renal tissues were examined by hematoxylin-eosin staining;the mRNA levels of tumor necrosis factorα, interleukin-6, interleukin-18, TLR2 and TLR4 detected by real-time fluorescence quantitative PCR;and the protein expression of COX-2, ICAM-1 and iNOS determined by western blot. RESULTS AND CONCLUSION:Compared with the sham group, rats in the model group showed obvious features of severe acute tubular damage and inflammatory cel infiltration. In the cel transplantation group, tubular epitheliael cel s were partial y lost with some inflammatory cel s infiltrated in the renal interstitium. In the emodin groups, the tubular lumen was practical y intact with little renal interstitial inflammatory cel s. Compared with the sham group, a significant increase in the mRNA levels of tumor necrosis factorα, interleukin-6, interleukin-18, TLR2 and TLR4 as wel as in the protein levels of COX-2, ICAM-1 and iNOS was found in the model group (both P<0.05). However, bone marrow mesenchymal stem cel transplantation attenuated this ischemia/reperfusion-induced increase in the expression of the above-mentioned factors (P<0.05). Furthermore, the effects of bone marrow mesenchymal stem cel transplantation were further augmented by pretreatment with emodin in a dose-dependent manner. These findings suggest that emodin can enhance the protective effects of bone marrow mesenchymal stem cel s on renal ischemia/reperfusion injury.
