This simulation demonstrates the dynamic balance between reactive oxygen species production and the cell's layered antioxidant defenses, including enzymatic relays (superoxide dismutase, catalase, glutathione peroxidase), non-enzymatic scavengers (glutathione, vitamin C, vitamin E), and the adaptive Nrf2/Keap1 gene-activation response, showing how the system shifts from healthy homeostasis into oxidative stress and molecular damage.
Adjust the sliders controlling ROS sources, such as mitochondrial leakage, immune respiratory burst activity, and environmental exposure, alongside sliders for antioxidant enzyme levels and small-molecule antioxidant availability. Watch how the Nrf2 pathway activates as ROS rises, and observe the point at which lipid, protein, and DNA damage indicators begin climbing once antioxidant capacity is exceeded. Try lowering micronutrient cofactor availability to see how it weakens enzymatic defenses even when enzyme levels appear normal.
Sliders for ROS sources (mitochondrial leakage, immune respiratory burst, environmental exposure), enzymatic antioxidant levels (SOD, catalase, glutathione peroxidase), non-enzymatic antioxidant availability (glutathione, vitamin C, vitamin E), micronutrient cofactor sufficiency, and Nrf2 pathway sensitivity, with live readouts of net oxidative balance and lipid, protein, and DNA damage indicators.
Catalase is one of the fastest enzymes known in nature, capable of breaking down millions of hydrogen peroxide molecules every second, and a single mitochondrion can leak a meaningful stream of superoxide radicals even during normal, healthy respiration.
This simulation demonstrates the dynamic balance between reactive oxygen species production and the cell's layered antioxidant defenses, including enzymatic relays (superoxide dismutase, catalase, glutathione peroxidase), non-enzymatic scavengers (glutathione, vitamin C, vitamin E), and the adaptive Nrf2/Keap1 gene-activation response, showing how the system shifts from healthy homeostasis into oxidative stress and molecular damage.
This simulation demonstrates the dynamic balance between reactive oxygen species production and the cell's layered antioxidant defenses, including enzymatic relays (superoxide dismutase, catalase, glutathione peroxidase), non-enzymatic scavengers (glutathione, vitamin C, vitamin E), and the adaptive Nrf2/Keap1 gene-activation response, showing how the system shifts from healthy homeostasis into oxidative stress and molecular damage.
Adjust the sliders controlling ROS sources, such as mitochondrial leakage, immune respiratory burst activity, and environmental exposure, alongside sliders for antioxidant enzyme levels and small-molecule antioxidant availability. Watch how the Nrf2 pathway activates as ROS rises, and observe the point at which lipid, protein, and DNA damage indicators begin climbing once antioxidant capacity is exceeded. Try lowering micronutrient cofactor availability to see how it weakens enzymatic defenses even when enzyme levels appear normal.
Catalase is one of the fastest enzymes known in nature, capable of breaking down millions of hydrogen peroxide molecules every second, and a single mitochondrion can leak a meaningful stream of superoxide radicals even during normal, healthy respiration.