Polysaccharide isolated from wax apple suppresses ethyl carbamate-induced oxidative damage in human hepatocytes

Polysaccharide isolated from wax apple suppresses ethyl carbamate-induced oxidative damage in human hepatocytes

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Bibliographic Details
Published in:Journal of Zhejiang University-SCIENCE B. - Zhejiang University Press, 2005. - 24(2023), 7 vom: Juli, Seite 574-586
Main Author: Bao, Tao (Author)
Other Authors: Karim, Naymul (Author) Ke, Huihui (Author) Tangpong, Jitbanjong (Author) Chen, Wei (Author)
Format: electronic Article
Language:English
Published: 2023
ISSN:1862-1783
External Sources:lizenzpflichtig
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245 1 0 |a Polysaccharide isolated from wax apple suppresses ethyl carbamate-induced oxidative damage in human hepatocytes 
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520 |a Abstract Wax apple (Syzygium samarangense) has received growing research interest for its high nutritional and medicinal value due to its constituents such as polysaccharide, organic acids, flavonoids, minerals, and other substances. In this study, wax apple polysaccharide (WAP) was isolated from this plant and its protective effect against ethyl carbamate (EC)-induced oxidative damage was evaluated in human hepatocytes (L02 cells). Firstly, a series of analyses such as high-performance liquid chromatography (HPLC), high-performance gel permeation chromatography (HPGPC), Fourier transform infrared spectroscopy (FT-IR), gas chromatography/mass spectrometry (GC/MS), and 1H and 13C nuclear magnetic resonance (NMR) were conducted to identify the structure of WAP. Thereafter, in vitro cell experiments were performed to verify the protective effects of WAP against EC-induced cytotoxicity, genotoxicity, and oxidative damage in L02 cells. Our results revealed that WAP is composed of mannose, rhamnose, glucuronic acid, galacturonic acid, glucose, galactose, arabinose, and fucose in a molar ratio of 2.20:3.94:4.45: 8.56:8.86:30.82:39.78:1.48. Using a combination of methylation and NMR spectroscopic analysis, the primary structure of WAP was identified as Araf-(1→, Glcp-(1→, →2)-Araf-(1→, →3)-Galp-(1→, →3)-Araf-(1→, and →6)-Galp-(1→. Cell experiments indicated that WAP exhibited significant protective effects on EC-treated L02 cells via suppressing cytotoxicity and genotoxicity, reducing reactive oxygen species (ROS) and $ O_{2} $•− formation, as well as improving mitochondrial membrane potential (MMP) and glutathione (GSH). In a nutshell, WAP has the potential as an important therapeutic agent or supplement for hepatic oxidative damage. Meanwhile, further studies are needed to prove the above effects in vivo at the biological and clinical levels. 
700 1 |a Karim, Naymul  |4 aut 
700 1 |a Ke, Huihui  |4 aut 
700 1 |a Tangpong, Jitbanjong  |4 aut 
700 1 |a Chen, Wei  |0 (orcid)0000-0002-2373-2437  |4 aut 
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