Affiliation:
1. Military Medical Academy named after S.M. Kirov
2. Military Medical Academy named after S.M. Kirov; Children’s Research and Clinical Center for Infectious Diseases
3. Children’s Research and Clinical Center for Infectious Diseases
Abstract
Since the description of the first clinical cases of the most common neurodegenerative diseases, numerous hypotheses have been proposed for their development. At the same time, the failure of therapeutic strategies in various directions of clinical research indicates the fallacy of most theories. In this regard, in recent years, various infectious agents are increasingly considered as a trigger of neuronal inflammation and a factor inducing the onset of the neurodegenerative process. Infectious agents differ in their mechanisms of invasion into the central nervous system and can even enter the brain perineurally. Reactivation of latent viral infection induces the production of viral proteins and the accumulation of abnormal proteins that are markers of Alzheimer’s disease and Parkinson’s disease. Both bacterial (chlamydia, causative agents of chronic periodontitis, E. coli) and viral (herpes viruses, noroviruses) infectious agents are considered. However, for the development of neurodegeneration, it is not enough just a simple invasion and reactivation of the infectious process: the genetic characteristics of the main histocompatibility complex also play a huge role. Currently, several studies have been initiated on the possible efficacy of antibacterial and antiviral drugs in Alzheimer’s disease. Data obtained over the past year suggests that the brain may act as a target for SARS-CoV-2. Neurological manifestations of COVID-19 can occur as a result of both the direct cytopathic action of the pathogen and the activation of neuroinflammation, accompanied by a violation of the integrity of the blood-brain barrier. Further study of the molecular and cellular mechanisms of neuroinflammation and neurodegeneration in COVID-19 will form the basis for the development of treatments for neurological complications.
Publisher
Medical Informational Agency Publishers
Subject
Psychiatry and Mental health,Neurology (clinical),Neurology
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