Autoantibodies Drive Neurological Symptoms in Long COVID Patients

AI Insight

Researchers demonstrated that immunoglobulin G (IgG) antibodies from patients with long COVID can directly cause neurological symptoms when transferred to mice. The transferred antibodies induced pain-related behaviors and caused measurable damage to nerve fibers in the skin of the recipient mice. This provides causal evidence that autoantibodies may be responsible for at least some neurological manifestations of long COVID.

Why it matters

This finding suggests that long COVID neurological symptoms may be treatable with existing therapies that target or remove pathogenic antibodies, such as plasmapheresis or immunomodulatory drugs. It also provides a potential biomarker for identifying which long COVID patients might benefit from antibody-targeted treatments.