Impact of COVID-19 on Gognitive change

We hypothesize that cognitive impairment in humans after COVID-19 is due to a change in the epigenetic regulation of brain neurons due to the activation of retroelements under the influence of SARS-CoV-2 virus. In order to confirm the role of transposons in changing the functioning of the brain in patients with COVID-19, the scientific literature and the results of meta-analyses over the past 3 years were studied. As a result, we found that SARS-CoV-2 affects the brain not only through its direct effect, induction of inflammation and coagulopathy, but also through the activation of retroelements, the transcripts of which are processed into microRNAs. This is reflected in changes in the epigenetic regulation of genes in brain neurons, which is reflected in cognitive functions. The mechanisms of integration of the cDNA of SARS-CoV-2 virus into the human genome with the help of retroelement enzymes are described, which is reflected in the development of long-term changes in cognitive functions after COVID-19.