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Anti-inflammatory Therapy by Cholinergic and Purinergic Modulation in Multiple Sclerosis Associated with SARS-CoV-2 Infection.
Simões, Júlia Leão Batista; de Araújo, Julia Beatrice; Bagatini, Margarete Dulce.
  • Simões JLB; Medical School, Federal University of Fronteira Sul, Chapecó, SC, Brazil.
  • de Araújo JB; Medical School, Federal University of Fronteira Sul, Chapecó, SC, Brazil.
  • Bagatini MD; Graduate Program in Medical Sciences, Federal University of Fronteira Sul, Chapecó, SC, Brazil. margaretebagatini@yahoo.com.br.
Mol Neurobiol ; 58(10): 5090-5111, 2021 Oct.
Article in English | MEDLINE | ID: covidwho-1303372
ABSTRACT
The virus "acute respiratory syndrome coronavirus 2" (SARS-CoV-2) is the etiologic agent of coronavirus disease 2019 (COVID-19), initially responsible for an outbreak of pneumonia in Wuhan, China, which, due to the high level of contagion and dissemination, has become a pandemic. The clinical picture varies from mild to critical cases; however, all of these signs already show neurological problems, from sensory loss to neurological diseases. Thus, patients with multiple sclerosis (MS) infected with the new coronavirus are more likely to develop severe conditions; in addition to worsening the disease, this is due to the high level of pro-inflammatory cytokines, which is closely associated with increased mortality both in COVID-19 and MS. This increase is uncontrolled and exaggerated, characterizing the cytokine storm, so a possible therapy for this neuronal inflammation is the modulation of the cholinergic anti-inflammatory pathway, since acetylcholine (ACh) acts to reduce pro-inflammatory cytokines and acts directly on the brain for being released by cholinergic neurons, as well as acting on other cells such as immune and blood cells. In addition, due to tissue damage, there is an exacerbated release of adenosine triphosphate (ATP), potentiating the inflammatory process and activating purinergic receptors which act directly on neuroinflammation and positively modulate the inflammatory cycle. Associated with this, in neurological pathologies, there is greater expression of P2X7 in the cells of the microglia, which positively activates the immune inflammatory response. Thus, the administration of blockers of this receptor can act in conjunction with the action of ACh in the anticholinergic inflammatory pathway. Finally, there will be a reduction in the cytokine storm and triggered hyperinflammation, as well as the level of mortality in patients with multiple sclerosis infected with SARS-CoV-2 and the development of possible neurological damage.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Cytokine Release Syndrome / COVID-19 / Immunologic Factors / Multiple Sclerosis Type of study: Etiology study / Prognostic study Limits: Humans Language: English Journal: Mol Neurobiol Journal subject: Molecular Biology / Neurology Year: 2021 Document Type: Article Affiliation country: S12035-021-02464-0

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Cytokine Release Syndrome / COVID-19 / Immunologic Factors / Multiple Sclerosis Type of study: Etiology study / Prognostic study Limits: Humans Language: English Journal: Mol Neurobiol Journal subject: Molecular Biology / Neurology Year: 2021 Document Type: Article Affiliation country: S12035-021-02464-0