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  • Title: Pancreatic beta-cell replication and amelioration of surgical diabetes by Reg protein.
    Author: Watanabe T, Yonemura Y, Yonekura H, Suzuki Y, Miyashita H, Sugiyama K, Moriizumi S, Unno M, Tanaka O, Kondo H.
    Journal: Proc Natl Acad Sci U S A; 1994 Apr 26; 91(9):3589-92. PubMed ID: 8170952.
    Abstract:
    We previously isolated from a rat regenerating islet cDNA library a gene named Reg, which is expressed in regenerating islets but is not expressed in normal islets. Here we examined the effect of rat Reg protein on pancreatic beta-cell replication using both 90% depancreatized rats and isolated islets. The depancreatized rats that received i.p. administration of recombinant rat Reg protein (1 mg/kg per day) for 2 months showed amelioration of the surgical diabetes, as evidenced by a significant decrease in blood glucose with an increased beta-cell mass in the residual pancreas. In isolated rat islets, Reg protein (18-180 nM: 0.3-3 micrograms/ml) significantly increased [3H]thymidine incorporation into the nuclei of beta cells. These results indicate that Reg protein is a growth factor for pancreatic beta cells and also suggest that the administration of Reg protein could be used as another therapeutic approach for diabetes mellitus.
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