Abstract
Acute kidney injury (AKI) induced by ischemia/reperfusion (I/R) injury is a major challenge in critical care medicine. The purpose of this study is to determine the therapeutic effects of the adipose-tissue-derived stromal vascular fraction (SVF) and the optimal route for SVF delivery in a rat model of AKI induced by I/R injury. Fifty male Sprague–Dawley rats were randomly divided into five groups (10 animals per group): sham, nephrectomy control, I/R injury control, renal arterial SVF infusion and subcapsular SVF injection. To induce AKI by I/R injury, the left renal artery was clamped with a nontraumatic vascular clamp for 40 min, and the right kidney was removed. Rats receiving renal arterial infusion of SVF had a significantly reduced increase in serum creatinine compared with the I/R injury control group at 4 days after I/R injury. The glomerular filtration rate of the renal arterial SVF infusion group was maintained at a level similar to that of the sham and nephrectomy control groups at 14 days after I/R injury. Masson’s trichrome staining showed significantly less fibrosis in the renal arterial SVF infusion group compared with that in the I/R injury control group in the outer stripe (P < 0.001). TUNEL labeling showed significantly decreased apoptosis in both the renal arterial SVF infusion and subcapsular SVF injection groups compared with the I/R injury control group in the outer stripe (P < 0.001). Thus, renal function is effectively rescued from AKI induced by I/R injury through the renal arterial administration of SVF in a rat model.
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Abbreviations
- AKI:
-
Acute kidney injury
- DMEM:
-
Dulbecco’s modified Eagle’s medium
- FBS:
-
Fetal bovine serum
- GFR:
-
Glomerular filtration rate
- GPx:
-
Glutathione peroxidase
- GR:
-
Glutathione reductase
- I/R:
-
Ischemia/reperfusion
- PBS:
-
Phosphate-buffered saline
- SVF:
-
Stromal vascular fraction
- TUNEL:
-
Terminal-deoxynucleotidyl-transferase-mediated dUTP nick-end labeling
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Lee, C., Jang, M.J., Kim, B.H. et al. Recovery of renal function after administration of adipose-tissue-derived stromal vascular fraction in rat model of acute kidney injury induced by ischemia/reperfusion injury. Cell Tissue Res 368, 603–613 (2017). https://doi.org/10.1007/s00441-017-2585-0
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DOI: https://doi.org/10.1007/s00441-017-2585-0