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Antioxidant and Neuroprotective Effects of KM-34, A Novel Synthetic Catechol, Against Oxidative Stress-Induced Neurotoxicity.

Drug Research 2018 May
Free radicals are important mediators in a number of neurodegenerative diseases and molecules capable of scavenging reactive oxygen species (ROS) may be a feasible strategy for protecting neuronal cells. In this sense, polyphenols have been studied for their antioxidant effects, KM-34 (5-(3, 4-dydroxyl-benzylidene)-2, 2-dimethyl-1, 3-dioxane-4, 6-Dione) is a novel synthetic catechol with potential neuroprotective and antioxidant properties. We have assessed the antioxidant (as scavenging and iron-chelating compound) and neuroprotectant in vitro (in PC12 cell injury induced by H2 O2 , glutamate or FeSO4 /AA) of KM-34. KM-34 was found to be a potent antioxidant, as shown by (i) inhibition of iron induced-brain lipid peroxidation, (ii) inhibition of 2-deoxyribose degradation, (iii) inhibition of superoxide radicals generation (IC50 =11.04 μM) and (iv) inhibition of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical reduction (IC50 =16.26 μM). The overall anti-oxidant action of KM-34 appears to be a combination of a direct reaction with free radicals and chelating the metal ions responsible for the production of ROS. Our work suggests that the antioxidant properties of KM-34 may provide future therapeutic approaches for neurodegenerative disorders.

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