Olfactory transmucosal SARS-CoV-2 invasion as a port of central nervous system entry in individuals with COVID-19.
Nat Neurosci
; 24(2): 168-175, 2021 02.
Article
in English
| MEDLINE | ID: covidwho-1060446
ABSTRACT
The newly identified severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes COVID-19, a pandemic respiratory disease. Moreover, thromboembolic events throughout the body, including in the CNS, have been described. Given the neurological symptoms observed in a large majority of individuals with COVID-19, SARS-CoV-2 penetrance of the CNS is likely. By various means, we demonstrate the presence of SARS-CoV-2 RNA and protein in anatomically distinct regions of the nasopharynx and brain. Furthermore, we describe the morphological changes associated with infection such as thromboembolic ischemic infarction of the CNS and present evidence of SARS-CoV-2 neurotropism. SARS-CoV-2 can enter the nervous system by crossing the neural-mucosal interface in olfactory mucosa, exploiting the close vicinity of olfactory mucosal, endothelial and nervous tissue, including delicate olfactory and sensory nerve endings. Subsequently, SARS-CoV-2 appears to follow neuroanatomical structures, penetrating defined neuroanatomical areas including the primary respiratory and cardiovascular control center in the medulla oblongata.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Brain
/
Olfactory Mucosa
/
SARS-CoV-2
/
COVID-19
Limits:
Humans
Language:
English
Journal:
Nat Neurosci
Journal subject:
Neurology
Year:
2021
Document Type:
Article
Affiliation country:
S41593-020-00758-5
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