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Effect of a complex lutein formula in an animal model for light-induced retinal degeneration.
Chinese Journal of Physiology 2016 August 32
Several retinal degenerative diseases cause vision loss and retinal cell death. Currently, people face prolonged exposure to digital screens, rendering vision protection from light exposure a critical topic. In this study, we designed a complex lutein formula (CLF) by combining several natural compounds: Calendula officinalis, Lycium barbarum, Vaccinium myrtillus, Cassia obtusifolia, and Rhodiola rosea. In addition, we evaluated the protective effects of the formula on retinal functions in an animal model for light-induced retinal degeneration. We employed electroretinography to analyse retinal function, and conducted a histological examination of the morphological changes in the retina treated under various conditions. We revealed that the retinal function in animals exposed to light for 7 days decreased significantly; however, the retinal function of animals that had received the CLF exhibited superior performance, despite light exposure. In addition, a greater portion of the outer nuclear layer (ONL) (i.e. the nuclei of photoreceptors) in these animals was preserved compared with the animals that had not received the formula after 7 days of light exposure. These results revealed that our dietary CLF supplement attenuated retinal function loss resulting from long-term light exposure.
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