Abstract
Plants produce promising chemicals called secondary metabolites in response to stress, which protect against oxidative damage in both plants and humans. Reactive oxygen species (ROS) levels combined with an imbalance in the antioxidant responses can trigger oxidative stress that is related to many conditions such as Alzheimer's disease, diabetes, and cancer. One way to counteract or avoid the stress excess is by flavonoid administration, a class of plant metabolites with a consistent antioxidant action and the ability to inactivate the free radical excess. The mechanisms, as well as the benefits and toxicity of antioxidant products, can be tested in alternative animal models. The mechanisms, as well as the benefits and toxicity of antioxidant products, can be tested in alternative animal models. In this review, we explored how Caenorhabditis elegans, a nematode with high genetic similarity to human genes and the antioxidant response pathway conserved, can be considered an attractive model organism for testing flavonoid compounds. Here, we emphasize the crucial results regarding C. elegans and the flavonoid quercetin, focusing on oxidative stress and aging investigations. Also, this review highlights the quercetin benefits in C. elegans lifespan, healthspan, neurodegeneration, and impacts on insulin/IGF-1 signaling (IIS).
Graphical Abstract
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