Artikel
Renoprotective effects of progenitor cell therapy in renal ischemia-reperfusion injury: decompression required
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Veröffentlicht: | 17. Mai 2010 |
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Gliederung
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Introduction: Cell therapy represents a promising therapeutic approach in kidney transplantation. This study examines the precise potentials and limits of cell therapy in renal ischemia-reperfusion injury.
Materials and methods: The effects of endothelial progenitor cell therapy following a 45 min warm ischemia were investigated in a murine model of renal ischemia-reperfusion injury alone and in combination with surgical decompression of the renal compartment. Renal function was measured by 99mTc-MAG3 scintigraphy and laser Doppler perfusion. Structural damage was assessed by histological/ immunohistochemical analysis.
Results: Warm ischemia of 45 min was associated with severe tissue damage and led to a significant decrease in tubular excretion rate (46.4%±12.5%, p<0.05) and renal perfusion (67.7%±3.9%, p<0.001). Cell therapy potently enhanced vascular regeneration with increased perfusion (112.5%±3.1%, p<0.001) and excellent tissue vitality, while tubular excretion remained impaired (33.3%±8.8%, p<0.001). Most importantly, combination of cell-based and decompression therapy enabled significant recovery of renal function (103.3%±16.0%, p<0.05) and perfusion (116.7%±2.5%; p<0.001) and preserved the integrity of renal structures.
Conclusion: Progenitor cell therapy alone promotes vascular regeneration and preserves organ integrity following renal ischemia-reperfusion injury, but lacks beneficial effects on renal function. Combining cellular and decompressive therapy results in enhanced functional recovery and may improve the outcome of renal allografts.