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• W2120743908 abstract "Glycemic memory of endothelial cells is an effect of long-lasting hyperglycemia and is a cause of various diabetics complications, that arises despite of the treatment targeted towards returning low glucose level in blood system. On the other hand, endothelial dysfunction, which is believed to be a main cause of cardiovascular complications, is exhibited in the changes of mechanical properties of cells. Although formation of the glycemic memory was widely investigated, its impact on the mechanical properties of endothelial cells has not been studied yet.In this study, nanoindentaion with a tip of an atomic force microscope was used to probe the long-term changes (through 26 passages, c.a. 80 days) in mechanical properties of EA.hy926 endothelial cells cultured in hyperglycemic conditions. As a complementary method, alterations in the structure of actin cytoskeleton were visualized by fluorescent staining of F-actin.We observed a gradual stiffening of the cells up to 20th passage for cells cultured in high glucose (25 mM). Fluorescence imaging has revealed that this behavior resulted from systematic remodeling of the actin cytoskeleton. In further passages, a drop in stiffness had occurred. The most interesting finding was recorded for cells transferred after 14 passages from high glucose to normal glucose conditions (5mM). After the transfer, the initial drop in stiffness was followed by a return of the cell stiffness to the value previously observed for cells cultured constantly in high glucoseOur results indicate that glycemic memory causes irreversible changes in stiffness of endothelial cells. The formation of the observed stiffness memory could be important in the context of vascular complications which develop despite the normalization of the glucose level." @default.
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• W2120743908 date "2013-06-27" @default.
• W2120743908 modified "2023-10-10" @default.
• W2120743908 title "Stiffness memory of EA.hy926 endothelial cells in response to chronic hyperglycemia" @default.
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• W2120743908 doi "https://doi.org/10.1186/1475-2840-12-96" @default.
• W2120743908 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3707738" @default.
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