Preprint Review Version 1 This version is not peer-reviewed

Methylglyoxal: A Key Factor for Diabetic Retinopathy and Its Effects on Retinal Damage

Version 1 : Received: 10 October 2024 / Approved: 11 October 2024 / Online: 11 October 2024 (11:02:25 CEST)

How to cite: Klochkov, V.; Chan, C.-M.; Lin, W.-W. Methylglyoxal: A Key Factor for Diabetic Retinopathy and Its Effects on Retinal Damage. Preprints 2024, 2024100871. https://doi.org/10.20944/preprints202410.0871.v1 Klochkov, V.; Chan, C.-M.; Lin, W.-W. Methylglyoxal: A Key Factor for Diabetic Retinopathy and Its Effects on Retinal Damage. Preprints 2024, 2024100871. https://doi.org/10.20944/preprints202410.0871.v1

Abstract

Diabetic retinopathy is the most common retinal vascular disease, affecting the retina's blood vessels and causing chronic inflammation, oxidative stress, and ultimately, vision loss. Diabetes-induced elevated glucose levels increase glycolysis, the main pathway for methylglyoxal (MGO) formation. MGO is a highly reactive dicarbonyl and the most rapid glycation compound to form endogenous advanced glycation end products (AGEs). MGO can act both intra- and extracellularly by glycating molecules and activating the RAGE pathway. This review summarizes the sources of MGO formation and its actions on various cell pathways in retinal cells such as oxidative stress, glycation, autophagy, ER stress, and mitochondrial dysfunction. Finally, the detoxification of MGO by glyoxalases is discussed.

Keywords

Methylglyoxal; diabetic retinopathy; oxidative stress; inflammation; autophagy; ER stress; glyoxalase

Subject

Medicine and Pharmacology, Medicine and Pharmacology

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