NOX4 Decline Drives Muscle Loss in Mice as Exercise Restores Protein Levels
Updated
Updated · Fox News · Jun 14
NOX4 Decline Drives Muscle Loss in Mice as Exercise Restores Protein Levels
3 articles · Updated · Fox News · Jun 14
Summary
Scientists reported that NOX4 levels fall with age and inactivity, and that drop tracked with frailty, muscle loss, insulin resistance and liver disease in mice.
Mouse experiments showed how the protein may work: removing NOX4 from muscle made animals weaker and reduced muscle mass, suggesting it helps muscles repair and adapt to exercise stress.
Exercise raised NOX4 levels again in older mice, offering a possible biological explanation for why regular physical activity helps preserve strength and resilience with age.
Human evidence remains preliminary: researchers saw similar NOX4 declines in muscle samples from younger and older men, but said more studies are needed to confirm its role in aging.