Antioxidant and anti-ageing activities of citrus-based juice mixture.

Dan-Bi Kim, Gi-Hae Shin, Jae-Min Kim, Young-Hyun Kim, Jin-Ha Lee, Jong Seok Lee, Hye-Jin Song, Soo Young Choe, In-Jae Park, Ju-Hyun Cho, Ok-Hawn Lee

Index: Food Chem. 194 , 920-7, (2015)

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Abstract

The production of excessive reactive oxygen species by exposure to oxidative stress and solar radiation are primary factors in skin damage. We examined the effects of a citrus-based juice mixture and its bioactive compounds on antioxidant and anti-ageing activities in human dermal fibroblasts and hairless mice via the regulation of antioxidant enzymes and the mitogen-activated protein kinase pathway. The citrus-based juice mixture reduced H2O2-induced cell damage and intracellular reactive oxygen species production in human dermal fibroblasts. Citrus-based juice mixture pretreatment suppressed the activation of the H2O2-mediated mitogen-activated protein kinase pathway by activating the expression of activator protein 1 and matrix metalloproteinases. Moreover, it increased the expression levels of antioxidant enzymes such as glutathione reductase, catalase and manganese superoxide dismutase. In addition, oral administration of the citrus-based juice mixture decreased skin thickness and wrinkle formation and increased collagen content on an ultraviolet light B-exposed hairless mouse. These results indicate that the citrus-based juice mixture is a potentially healthy beverage for the prevention of oxidative stress-induced premature skin ageing.Copyright © 2015 Elsevier Ltd. All rights reserved.