<i>Grifola frondosa</i> (Maitake) Extract Reduces Fat Accumulation and Improves Health Span in <i>C. elegans</i> through the <i>DAF-16/FOXO</i> and <i>SKN-1/NRF2</i> Signalling Pathways
In recent years, food ingredients rich in bioactive compounds have emerged as candidates to prevent excess adiposity and other metabolic complications characteristic of obesity, such as low-grade inflammation and oxidative status. Among them, fungi have gained popularity for their high polysaccharid...
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| Auteurs principaux: | , , , , , , , , , , |
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| Format: | article |
| Langue: | EN |
| Publié: |
MDPI AG
2021
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| Accès en ligne: | https://doaj.org/article/4c65e559474345b980bee60a65cbea8c |
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| Résumé: | In recent years, food ingredients rich in bioactive compounds have emerged as candidates to prevent excess adiposity and other metabolic complications characteristic of obesity, such as low-grade inflammation and oxidative status. Among them, fungi have gained popularity for their high polysaccharide content and other bioactive components with beneficial activities. Here, we use the <i>C. elegans</i> model to investigate the potential activities of a <i>Grifola frondosa</i> extract (GE), together with the underlying mechanisms of action. Our study revealed that GE represents an important source of polysaccharides and phenolic compounds with in vitro antioxidant activity. Treatment with our GE extract, which was found to be nongenotoxic through a <i>SOS/umu</i> test, significantly reduced the fat content of <i>C. elegans</i>, decreased the production of intracellular ROS and aging–lipofuscin pigment, and increased the lifespan of nematodes. Gene expression and mutant analyses demonstrated that the in vivo anti-obesity and antioxidant activities of GE were mediated through the <i>daf-2/daf-16</i> and <i>skn-1/nrf-2</i> signalling pathways, respectively. Taken together, our results suggest that our GE extract could be considered a potential functional ingredient for the prevention of obesity-related disturbances. |
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