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  • Title: Effect of a novel ascorbic derivative, disodium isostearyl 2-O-L-ascorbyl phosphate, on normal human dermal fibroblasts against reactive oxygen species.
    Author: Shibayama H, Hisama M, Matsuda S, Kawase A, Ohtsuki M, Hanada K, Iwaki M.
    Journal: Biosci Biotechnol Biochem; 2008 Apr; 72(4):1015-22. PubMed ID: 18391439.
    Abstract:
    The novel amphiphilic vitamin C derivative disodium isostearyl 2-O-L-ascorbyl phosphate (VCP-IS-2Na), which has a C(18) alkyl chain attached to the stable ascorbate derivative sodium L-ascorbic acid 2-phosphate (VCP-Na), was evaluated for reduction of cell damage induced by oxidative stress, ultraviolet A (UVA), ultraviolet B (UVB), and H(2)O(2); stimulation of collagen synthesis against UVA irradiation; and inhibition of matrix metalloproteinase-1 (MMP-1) activity induced by UVA in human normal dermal fibroblasts. VCP-IS-2Na pretreatment resulted in significant protection against cell damage induced by UVB, UVA, and H(2)O(2). The amount of type I collagen following UVA irradiation was increased by treatment with VCP-IS-2Na in a concentration-dependent manner. These effects of VCP-IS-2Na were superior to those of L-ascorbic acid (vitamin C, VC) and VCP-Na. On the other hand, VCP-IS-2Na suppressed 65% of the excess MMP-1 irradiated UVA, and VC and VCP-Na slightly suppressed it.
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