The search for longer, healthier lives has led scientists to investigate many potential anti-aging treatments.
One of the most widely studied approaches combines two compounds, dasatinib and quercetin, often called D+Q. Supporters of the treatment believe it may help remove aging cells that contribute to chronic inflammation and age-related disease.
Over the past decade, the drug combination has become a major focus in longevity research. Scientists have explored its potential for conditions such as diabetes, Alzheimer’s disease, and other disorders linked to aging. Some health enthusiasts have even taken the treatment outside clinical studies in hopes of slowing the aging process.
But a new study from researchers at the University of Connecticut has raised serious concerns about the possible effects of the treatment on the brain.
The study, published in PNAS, found that D+Q caused substantial damage to myelin in mice. Myelin is one of the most important components of the nervous system. It forms a protective layer around nerve fibers and helps electrical signals travel rapidly throughout the brain and body.
When myelin is damaged, nerve communication becomes less efficient. This can lead to a wide range of symptoms, including weakness, numbness, chronic pain, walking difficulties, memory problems, and cognitive decline. Severe myelin damage is a hallmark of neurological diseases such as multiple sclerosis.
The researchers did not initially expect to find harmful effects. In fact, they were studying whether the drug combination might actually help repair neurological damage. Their goal was to better understand how D+Q affects oligodendrocytes, the cells responsible for creating and maintaining myelin.
To investigate, the team treated both young adult mice and older mice with the drug combination. They also examined oligodendrocytes grown in laboratory conditions.
The results were striking. The protective myelin coating surrounding nerve fibers became dramatically thinner following treatment. The damage was especially severe in younger animals, which surprised the researchers because younger brains are generally expected to be more resilient.
Further examination revealed changes in the corpus callosum, one of the brain’s most important communication highways. This structure allows information to travel between the left and right sides of the brain. Damage to this area has been linked to cognitive difficulties and reduced mental performance.
One of the most fascinating discoveries came when scientists looked closely at the oligodendrocytes themselves. Rather than dying, the cells appeared to change into a more primitive and immature form. Although the cells remained alive, they were no longer functioning normally.
Researchers believe the drugs may disrupt how these cells generate and use energy. In response, the cells seem to simplify their structure and lose some of their ability to support healthy myelin.
The altered cells closely resembled unusual cell populations previously identified in patients with multiple sclerosis. This unexpected similarity could provide important clues about how myelin-related diseases develop and progress.
The findings have implications beyond anti-aging research. They suggest that stress affecting oligodendrocytes may trigger a process in which cells become less mature and less effective, contributing to neurological disease. If scientists can understand this process better, they may eventually learn how to reverse it.
The researchers are now investigating whether these altered cells can recover and resume normal function. If successful, this line of research could potentially lead to new treatments aimed at restoring myelin and repairing damage in diseases such as multiple sclerosis.
At the same time, the study highlights the need for caution. Anti-aging therapies often receive significant attention before their long-term risks are fully understood. The results suggest that treatments designed to improve one aspect of health may sometimes create unexpected problems elsewhere in the body.
Review and analysis: The study is important because it challenges the assumption that D+Q is universally beneficial. The researchers uncovered a potentially serious neurological side effect that had received little attention previously.
The work also provides a possible new explanation for how myelin damage occurs in certain diseases. However, the findings were observed in mice and laboratory cells rather than human patients.
Further studies are essential before conclusions can be drawn about human risk. Even so, the results highlight the importance of carefully evaluating anti-aging treatments before they are widely adopted.
Source: University of Connecticut.
