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Abstract Title:

Structural characterization of corn silk polysaccharides and its effect in HOinduced oxidative damage in L6 skeletal muscle cells.

Abstract Source:

Carbohydr Polym. 2019 Mar 15 ;208:161-167. Epub 2018 Dec 19. PMID: 30658787

Abstract Author(s):

Qingwen Guo, Leilei Xu, Yue Chen, Qiqi Ma, Ramesh Kumar Santhanam, Zihan Xue, Xudong Gao, Haixia Chen

Article Affiliation:

Qingwen Guo

Abstract:

To evaluate the antioxidant activity of polysaccharides from corn silk in HOinduced oxidative damage in L6 skeletal muscle cells. A polysaccharide (CSP2) was isolated from corn silk. Structure analysis of CSP2 with 1D and 2D NMR indicated that CSP2 was composed of (1→6)-linked α-d-glucose. The substituent of the α-d-glucose is composed of (1→3)-linked α-l-arabinose, (1→4)-linked β-d-galactose and (1→3,5)-linked β-d-mannose, with β-d-xylose and α-l-rhamnose as terminal unit. CSP2 had the potential to scavenge DPPH and hydroxyl radical and inhibithemolysis in vitro. CSP2 was found to suppress oxidant stress by improving the enzyme activities of SOD, CAT, and GPX. Rodamine 123 staining results showed that the pretreatment of CSP2 prevented changes in the mitochondrial membrane potential and increased the fluorescence intensity in L6 cells inthe presence of HO. These results suggested that CSP2 could be utilized as a potential antioxidant supplement to prevent oxidative stress.

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