Journal
FRONTIERS IN NEUROLOGY
Volume 13, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fneur.2022.882905
Keywords
COVID-19; immunology; neurological complications; cytokine release syndrome; autoantibodies
Categories
Funding
- UKRI/MRC [MR/V03605X/1]
- MRC/UKRI [MR/V007181//1]
- MRC [MR/T028750/1]
- Wellcome [ISSF201902/3]
- NIHR BioResource
- MRC [MR/V03605X/1, MR/T028750/1, MR/V007181/1] Funding Source: UKRI
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Neurological complications are common in COVID-19 patients caused by SARS-CoV-2, but the mechanisms and treatments are not well understood. The immune system plays a critical role in these complications, but dysregulation can also lead to pathology.
Although SARS-CoV-2 causes a respiratory viral infection, there is a large incidence of neurological complications occurring in COVID-19 patients. These range from headaches and loss of smell to encephalitis and strokes. Little is known about the likely diverse mechanisms causing these pathologies and there is a dire need to understand how to prevent and treat them. This review explores recent research from the perspective of investigating how the immune system could play a role in neurological complications, including cytokines, blood biomarkers, immune cells, and autoantibodies. We also discuss lessons learnt from animal models. Overall, we highlight two key points that have emerged from increasing evidence: (1) SARS-CoV-2 does not invade the brain in the majority of cases and so the associated neurological complications might arise from indirect effects, such as immune activation (2) although the immune system plays a critical role in controlling the virus, its dysregulation can cause pathology.
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