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Caspase-3 expression and cell morphology of early endothelial progenitor cells exposed to N-epsilon-carboxymethyl lysine

Agus Yuwono, Nur Permatasari, Dian Nugrahenny, Djanggan Sargowo, Achmad Rudijanto, Djoko Wahono Soeatmadji.

The role of endothelial progenitor cells (EPCs) on vascular repair and neovasculogenesis is impaired in diabetes. This study aimed to investigate the effect of N-epsilon-carboxymethyl lysine (CML) on caspase-3 expression and morphology of early EPCs. After 7 days of culturing, primary cultures of early EPCs were randomly divided into four groups. One group is a normal group. Three groups were exposed to low (50 g/ml), medium (100 g/ml), and high (200 g/ml) doses of CML for an hour. The caspase-3 expression and morphology of early EPCs were evaluated by laser scanning confocal microscope. The caspase-3 expression of early EPCs increased in groups exposed to low and medium dose of CML, and decreased in group exposed to high dose of CML compared to normal. Exposure of CML changed the morphology of early EPCs including cells shrinkage, unclear margin between cytoplasm and nucleus, also oval-shape cells. Given that CML may contribute to the functional defects of the endothelium in diabetes by causing early EPCs apoptosis via increased caspase-3 expression.

Key words: Endothelial progenitor cells; Caspase-3; Morphology; N-epsilon-carboxymethyl lysine

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The articles in Bibliomed are open access articles licensed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.