Gypenosides, the main functional component from the vine Gynostemma pentaphyllum, display potential as a treatment for Retinitis Pigmentosa by protecting photoreceptor cells from degeneration.
In this study, researchers used zebrafish carrying a specific mutation that leads to early retinal degeneration like in Retinitis Pigmentosa, a group of genetic retinal disorders. The mutation, present in the retinitis pigmentosa GTPase regulator interacting protein 1 gene, was exposed to Gypenosides. The substance was sourced from Gynostemma pentaphyllum, a climbing vine, and previously found to combat oxidative stress and inflammation in optic neuritis cells.
The results suggest significant benefits from the application of Gypenosides to retinitis pigmentosa. Treatment of the mutated zebrafish resulted in a notable decrease in the death rate of photoreceptor cells. The reaction of antioxidant genes typically associated with oxidative stress was also significantly reduced. Furthermore, there were marked reductions in reactive oxygen species and malondialdehyde production, along with diminished expression of pro-inflammatory cytokines. Overall, the outcome indicates that Gypenosides effectively counteracted the harmful effects of the mutation, protecting the photoreceptors from degeneration.
