Protective effect of a polysaccharide isolated from a cultivated Cordyceps mycelia on hydrogen peroxide-induced oxidative damage in PC12 cells

Wenbin Shen, Dan Song, Jianyong Wu, Weiyun Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

28 Citations (Scopus)

Abstract

Cordyceps sinensis as a well-known traditional Chinese tonic has many therapeutic functions. In the present study, an acid polysaccharide (APS) was isolated from cultivated Cordyceps mycelia by ion-exchange and sizing chromatography. The protective capacity of APS against H 2O 2-induced oxidative damage in rat pheochromocytoma PC12 cells was investigated by measuring cell viability, lactate dehydrogenase (LDH) release, antioxidant enzyme activity, malondialdehyde (MDA) levels and intracellular accumulation of reactive oxygen species (ROS) and Ca 2+. The results demonstrated that pretreatment of PC12 cells with APS, prior to H 2O 2 exposure, significantly increased the survival of cells and the activities of glutathione peroxidase (GSH-Px), catalase (CAT) and superoxide dismutase (SOD), and reduced the levels of LDH and MDA. Intracellular accumulation of reactive oxygen species (ROS) and Ca 2+ were also inhibited by APS treatment. In conclusion, APS was found to increase the cellular antioxidant defence capacity, thereby protecting PC12 cells against oxidative stress.
Original languageEnglish
Pages (from-to)675-680
Number of pages6
JournalPhytotherapy Research
Volume25
Issue number5
DOIs
Publication statusPublished - 1 May 2011

Keywords

  • antioxidation
  • Cordyceps sinensis
  • pheochromocytoma PC12 cell
  • polysaccharide

ASJC Scopus subject areas

  • Pharmacology

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