Breakthrough in Understanding Multiple Sclerosis

Researchers at the University of California, San Francisco have made significant progress in understanding multiple sclerosis by analyzing thousands of proteins present in the blood. The findings suggest that the immune system begins attacking the brain’s protective sheath, known as myelin, earlier than scientists previously thought.

Analyzing Early Disease Attacks

By studying thousands of proteins in the blood, researchers discovered that myelin, the fatty sheath that insulates nerve fibers, is subject to immune attacks at very early stages. This analysis enabled them to identify the sequence of biological events that ultimately lead to the onset of multiple sclerosis.

They measured fragments of myelin and other molecules left behind after immune attacks, along with chemical signals that trigger the immune system’s response. This study opens the door to early diagnosis and may make prevention possible in the future.

Early Warning Signs for the Body

Research has shown that multiple sclerosis initially targets the myelin sheath. About a year later, evidence of damage to the nerve fibers themselves begins to appear.

Among the elevated immune proteins during this initial phase, the protein IL-3 emerged as a central element in the early stage of the disease, playing a key role in recruiting immune cells to the brain and spinal cord to initiate attacks on nerve tissue.

Tracking Blood Signals Years Before Diagnosis

Researchers analyzed over 5,000 different proteins in blood samples from 134 individuals who eventually developed multiple sclerosis. These samples were sourced from the U.S. Department of Defense serum repository, which maintains blood samples from military service applicants.

Seven years before diagnosis, researchers discovered an increase in a protein known as MOG, indicating damage to the myelin insulation around nerve fibers. About a year later, they observed an increase in neurofilament chains, a marker of injury to the nerve fibers themselves.

Laying the Foundation for a Predictive Blood Test

The team identified around 50 proteins that could serve as early indicators of multiple sclerosis. They have applied for a patent for a diagnostic blood test based on the 21 most reliable markers.

Dr. Ari Green, head of Neuroimmunology and Glial Biology at the Department of Neurology, University of California, San Francisco, and lead author of the study, stated that these discoveries could reshape how doctors approach prevention and treatment.

Conclusion

Recent research has shown that multiple sclerosis begins much earlier than the onset of clinical symptoms. These discoveries not only open the door to early diagnosis but also enable the possibility of future prevention. With a better understanding of the biological mechanisms leading to the disease, doctors can develop new strategies to protect against multiple sclerosis and mitigate the damage it causes.