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- Kun-Chen Lin, Hon-Kan Yip, Pei-Lin Shao, Shun-Cheng Wu, Kuan-Hung Chen, Yen-Ta Chen, Chih-Chao Yang, Cheuk-Kwan Sun, Gour-Shenq Kao, Sheng-Yi Chen, Han-Tan Chai, Chia-Lo Chang, Chih-Hung Chen, and Mel S Lee.
- Department of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan.
- Int. J. Cardiol. 2016 Aug 1; 216: 173-85.
BackgroundIn this study, we tested the hypothesis that a combined adipose-derived mesenchymal stem cell (ADMSC) and ADMSC-derived exosome therapy protected rat kidney from acute ischemia-reperfusion (IR) injury (i.e., ligation of both renal arteries for 1h and reperfusion for 72h prior to euthanization).Methods And ResultsAdult-male SD rats (n=40) were equally categorized into group 1 (sham control), group 2 (IR), group 3 [IR+exosome (100μg)], group 4 [IR+ADMSC (1.2×10(6) cells)], and group 5 (IR-exosome-ADMSC). All therapies were performed at 3h after IR procedure from venous administration. By 72h, the creatinine level and kidney injury score were the lowest in group 1 and the highest in group 2, significantly higher in group 3 than in groups 4 and 5, and significantly higher in group 4 than in group 5 (all P<0.0001). The protein expression of inflammatory (TNF-α/NF-κB/IL-1β/MIF/PAI-1/Cox-2), oxidative-stress (NOX-1/NOX-2/oxidized protein), apoptotic (Bax/caspase-3/PARP), and fibrotic (Smad3/TGF-β) biomarkers showed an identical pattern, whereas the anti-apoptotic (Smad1/5, BMP-2) and angiogenesis (CD31/vWF/angiopoietin) biomarkers and mitochondrial cytochrome-C showed an opposite pattern of creatinine level among the five groups (all P<0.001). The microscopic findings of glomerular-damage (WT-1), renal tubular-damage (KIM-1), DNA-damage (γ-H2AX), inflammation (MPO/MIF/CD68) exhibited an identical pattern, whereas the podocyte components (podocin/p-cadherin/synaptopodin) displayed a reversed pattern of creatinine level (all P<0.0001).ConclusionCombined exosome-ADMSC therapy was superior to either one for protecting kidney from acute IR injury.Copyright © 2016. Published by Elsevier Ireland Ltd.
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