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• W2537471102 startingPage "1957" @default.
• W2537471102 abstract "Pancreatic dysfunction during diabetes is linked to the induction of endoplasmic reticulum (ER) stress on pancreatic beta (β) cells. Our laboratory recently discovered that p21 protects from diabetes by modifying the outcome of ER stress response. In the present study, we explored the antidiabetic activity of ciclopirox (CPX), an iron chelator and recently described activator of p21 expression. The effects of CPX in beta cell survival and function were assessed in cultured islets in vitro as well as in diabetic mice in vivo. The consequences of CPX in high glucose-induced insulin release and reactive oxygen species (ROS) production were also evaluated. Islet survival assays confirmed the significance of p21 in the regulation of glucotoxicity and suggested that CPX counteracts glucotoxicity in a manner that depends on p21. In vivo, administration of CPX in wild-type (WT) diabetic mice restored glucose homeostasis. In WT-cultured islets, CPX suppressed the expression of ER stress markers BiP, GRP94, and CHOP and reduced the levels of ROS during culture at high glucose. This reduction of ER stress may be associated with the ability of CPX to inhibit insulin release. Iron citrate stimulated insulin release, which was inhibited by CPX that functions as an iron chelator. It is conceivable that inhibition of insulin production constrains ER stress in islets promoting their survival and thus protecting from diabetes in vivo. This unfolded protein response (UPR)-antagonizing activity of CPX suggests application for the management not only of diabetes but also of other conditions related to ER stress." @default.
• W2537471102 created "2016-10-28" @default.
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• W2537471102 date "2016-10-19" @default.
• W2537471102 modified "2023-10-18" @default.
• W2537471102 title "Ciclopirox enhances pancreatic islet health by modulating the unfolded protein response in diabetes" @default.
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• W2537471102 doi "https://doi.org/10.1007/s00424-016-1887-5" @default.
• W2537471102 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5161347" @default.
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• W2537471102 hasPublicationYear "2016" @default.
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