Ficus virens Review Highlights Nrf2/Keap1 Activation and NF-κB Inhibition for Neuroprotection

Neurodegenerative diseases like Alzheimer's and Parkinson's are characterized by progressive neuronal loss driven by oxidative stress, mitochondrial dysfunction, and chronic neuroinflammation. Current therapeutic strategies often fall short, failing to effectively target these intertwined pathological processes. Ethnomedicine, with its rich history of plant-derived compounds, offers a promising avenue for identifying novel neurotherapeutics. Ficus virens, a traditionally used medicinal plant, has garnered attention due to its diverse pharmacological activities and high phytochemical content, making it a candidate for addressing these complex neurodegenerative pathways.

This comprehensive review synthesized existing literature on Ficus virens, focusing on its botanical properties, ethnomedicinal applications, phytochemical composition, and pharmacological functions. Researchers specifically highlighted its neuroprotective properties by examining experimental results from both in vivo and in vitro studies. The review explored how the plant's bioactive constituents, such as flavonoids, phenolics, and terpenoids, contribute to its antioxidant and anti-inflammatory effects, with a particular emphasis on its mechanisms of action in neuroprotection. It also considered advanced delivery systems like nanotechnology for improving therapeutic efficacy.

The review found that Ficus virens exerts significant neuroprotective effects primarily through the modulation of key cellular signaling pathways. Its main mechanism involves the regulation of the Nrf2/Keap1 signaling pathway, which leads to increased expression of endogenous antioxidant enzymes and restoration of redox homeostasis. Furthermore, Ficus virens actively inhibits neuroinflammatory responses by suppressing the major NF-κB signaling pathway, thereby reducing the production of pro-inflammatory cytokines and mediators. This dual action against oxidative stress and inflammation is crucial for neuronal health. Experimental evidence cited within the review consistently demonstrated that Ficus virens has the capacity to inhibit oxidative damage, mediate apoptotic mechanisms, and significantly enhance neuronal survival across various models. The plant's rich composition of flavonoids, phenolics, and terpenoids are identified as key bioactive constituents responsible for these beneficial properties.

Ficus virens primarily mediates neuroprotection by upregulating the Nrf2/Keap1 pathway to boost antioxidant defenses and by suppressing the NF-κB pathway to mitigate neuroinflammation.