Nature Study Links Myeloid Cells to Long COVID Brain Symptoms in Mice
Updated
Updated · BIOENGINEER.ORG · Aug 1
Nature Study Links Myeloid Cells to Long COVID Brain Symptoms in Mice
2 articles · Updated · BIOENGINEER.ORG · Aug 1
Summary
A Nature Communications study found myeloid cells help drive neuroPASC in mice, tying long-lasting neurological symptoms after SARS-CoV-2 infection to immune activity beyond the acute respiratory phase.
Using a longitudinal design, the researchers tracked how myeloid populations changed over time to show when inflammatory states emerged relative to neuroPASC-like pathology, rather than relying on a single snapshot.
The work centers on microglia, monocytes and macrophages, which can disrupt neuronal function through prolonged activation, inflammatory mediators and blood-brain barrier-related signaling even without high levels of replicating virus in the brain.
Those immune signatures could guide biomarker discovery and more targeted treatments aimed at damping harmful inflammation while preserving protective myeloid functions.
The authors caution that mouse findings do not fully replicate human disease, but say the timeline offers a framework for testing mechanism-based diagnosis and therapy in long COVID patients.