Protective effects of anthocyanins against brain ischemic damage.

Journal of Bioenergetics and Biomembranes
Kristina SkemieneVilmante Borutaite

Abstract

Anthocyanins are considered as bioactive components of plant-based diets that provide protection against ischemic cardiovascular pathologies by mechanisms dependent on their antioxidant and reductive capacities. However, it is not clear whether similar anthocyanin-mediated mechanisms can provide protection against ischemia-induced brain mitochondrial injury and cell death. In this study, we compared effects of three cyanidin-3-glycosides - glucoside (Cy3G), galactoside (Cy3Gal) and rutinoside (Cy3R), with pelargonxidin-3-glucoside (Pg3G) and found that at 10-20 μM concentrations they have no direct effect on respiratory functions of mitochondria isolated from normal or ischemia-damaged rat brain slices. However, intravenous injection of Cy3Gal and Cy3G (0,025 mg/kg or 0,05 mg/kg what matches 10 μM or 20 μM respectively) but not Cy3R in rats protected against ischemia-induced caspase activation and necrotic cell death, and reduced infarct size in cerebral cortex and cerebellum. These effects correlated with cytochrome c reducing capacity of cyanidin-3-glycosides. In contrast, intravenous injection of 0,025 mg/kg Pg3G which has the lowest cytochrome c reducing capacity among investigated anthocyanins, had no effect on ischemia-in...Continue Reading

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Citations

Sep 6, 2020·Antioxidants·Vidmantas BendokasJulius Liobikas
Mar 7, 2021·International Journal of Molecular Sciences·Zhongxin LiangDong Yang
Nov 22, 2020·Neurochemistry International·Bharath Chelluboina, Raghu Vemuganti
May 1, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Raquel CostaDaniel O Carvalho

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