Brownlee 2003 J Clin Invest

Brownlee M (2003) A radical explanation for glucose-induced beta cell dysfunction. J Clin Invest 112:1788-90. https://doi.org/10.1172/JCI20501

» PMID: 14679173 Open Access

Brownlee M (2003) J Clin Invest

Abstract: The development of type 2 diabetes requires impaired beta cell function. Hyperglycemia itself causes further decreases in glucose-stimulated insulin secretion. A new study demonstrates that hyperglycemia-induced mitochondrial superoxide production activates uncoupling protein 2, which decreases the ATP/ADP ratio and thus reduces the insulin-secretory response. These data suggest that pharmacologic inhibition of mitochondrial superoxide overproduction in beta cells exposed to hyperglycemia could prevent a positive feed-forward loop of glucotoxicity that drives impaired glucose tolerance toward frank type 2 diabetes.

• Bioblast editor: Gnaiger E

Correction: FADH₂ and Complex II

FADH₂ is shown as the substrate feeding electrons into Complex II (CII). This is wrong and requires correction - for details see Gnaiger (2024).

Gnaiger E (2024) Complex II ambiguities ― FADH₂ in the electron transfer system. J Biol Chem 300:105470. https://doi.org/10.1016/j.jbc.2023.105470 - »Bioblast link«

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Enzyme: Complex II;succinate dehydrogenase