Studies on the role of antioxidants in the cryptobiotic cysts of the brine shrimp, Artemia parthenogenetica

G. K. Shanmugasundaram, K. Rani, N. Munuswamy

Research output: Contribution to journalArticlepeer-review

Abstract

The desiccated and non-desiccated cysts of the brine shrimp, Artemia parthenogenetica showed the occurrence of lipid peroxidation. Further investigation of the cellular response to the peroxides revealed the presence and role of both enzymic and non-enzymic antioxidants. Glutath one peroxidase showed higher activity than catalase, although both the enzymes manifested an increasing trend in activity in desiccated cysts compared with the non-desiccated cysts. Among the non-enzymic antioxidants, sulphydryl groups seemed to play an indirect role in protecting the reversibly denatured molecules from the deleterious effects of peroxides. The decreased content of other antioxidants, such as ascorbic acid and reduced glutathione, in the desiccated cysts reflected their direct utilization by peroxides in order to mitigate the influence of free-radicals on the encysted embryo.

Original languageEnglish (US)
Pages (from-to)17-22
Number of pages6
JournalBiomedical Letters
Volume53
Issue number209
StatePublished - Dec 1 1996
Externally publishedYes

Keywords

  • Antioxidants
  • Artemia parthenogenetica
  • Catalase
  • Cryptobiosis
  • Glutathione peroxidase
  • Lipid peroxidation

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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