Abstract
Chlorella has a variety of biological activities, and it is worth further exploring its pharmacological effects. In this study, we investigated the antioxidant and anti-ageing activities of Chlorella polysaccharide extract (CPE). Further studies revealed that CPE exhibited anti-ageing, and antioxidant activities in vivo, including an extended Caenorhabditis elegans stress resistance, decreased deposition of lipofuscin, and reduced effects of amyloid β protein on mobility, decreased levels of reactive oxygen species and increased activity of antioxidant enzymes. Moreover, it dramatically increased the expression of anti-stress and longevity genes and reduced the expression of ageing-related genes; therefore, it was hypothesised that the mechanism of the age-delaying effect of CPE was related to the insulin signalling pathway. In summary, CPE could delay ageing and provide a new avenue for the application and development of CPE.
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