Researchers linked Long COVID "brain fog" to a systemic increase of AMPA receptors in the brain using PET imaging. Higher receptor density correlated directly with more severe cognitive symptoms and inflammation. This discovery provides a potential biomarker for diagnosis and a new therapeutic target, suggesting drugs that suppress AMPA receptor activity could be an effective treatment.
https://scitechdaily.com/scientists-finally-reveal-biological-basis-of-long-covid-brain-fog/
