Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 23, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/ijms23084275
Keywords
SARS-CoV-2; post-COVID-19; astrocytes; microglia; hypothalamus; kisspeptin; ME; CFS
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Many survivors of COVID-19 are experiencing persistent symptoms, known as post-COVID-19 syndrome or long COVID, which significantly impact their quality of life. Understanding the mechanisms behind this syndrome is crucial for diagnosis, biomarker development, and potential treatments. This article discusses the prevalence and manifestations of post-COVID-19 syndrome, as well as the molecular mechanisms underlying its neurological features, highlighting potential targets for pharmacological intervention.
Many of the survivors of the novel coronavirus disease (COVID-19) are suffering from persistent symptoms, causing significant morbidity and decreasing their quality of life, termed post-COVID-19 syndrome or long COVID. Understanding the mechanisms surrounding PCS is vital to developing the diagnosis, biomarkers, and possible treatments. Here, we describe the prevalence and manifestations of PCS, and similarities with previous SARS epidemics. Furthermore, we look at the molecular mechanisms behind the neurological features of PCS, where we highlight important neural mechanisms that may potentially be involved and pharmacologically targeted, such as glutamate reuptake in astrocytes, the role of NMDA receptors and transporters (EAAT2), ROS signaling, astrogliosis triggered by NF-kappa B signaling, KNDy neurons, and hypothalamic networks involving Kiss1 (a ligand for the G-protein-coupled receptor 54 (GPR54)), among others. We highlight the possible role of reactive gliosis following SARS-CoV-2 CNS injury, as well as the potential role of the hypothalamus network in PCS manifestations.
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