ISSN:
1432-2277
Schlagwort(e):
Key words Geranylgeranylacetone
;
Heat-shock protein 72
;
Liver transplantation
;
Warm ischemic injury
;
Ischemia reperfusion injury
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Medizin
Notizen:
Abstract It is well known that heat-shock proteins (HSPs) have a cytoprotective function as “molecular chaperones” when cells are exposed to several stress conditions. Geranylgeranylacetone (GGA) is an antiulcer drug that was developed in Japan and it has recently been reported to induce HSP72 in rat gastric mucosa. In this experiment, we investigated the induction of HSP72 in rat liver in response to oral administration of GGA and assessed its ability to induce tolerance to warm ischemic injury by this approach. We prepared donor rats by orally administering GGA to them and compared HSP72 expression in graft liver, survival rates, and serum TNF-α concentrations after liver transplantation with the findings in controls. The survival rates were significantly increased when the livers were obtained from donor rats given GGA. Western blotting revealed expression of HSP72 in graft livers given GGA, and the serum TNF-α levels were significantly suppressed in the rats given GGA. Oral administration of GGA induced HSP72 in graft livers, and they were better able to tolerate warm ischemic injury. Oral administration of GGA appears to provide a promising new strategy for preventing ischemia-reperfusion injury.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/s001470050341
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