Ontology highlight
ABSTRACT: Background
There is evidence that chemosensory dysfunctions, including smell and taste disorders, are common findings in patients with SARS-CoV-2 infection. However, the underlying biological mechanisms and the role of inflammatory markers are still poorly understood.Aim
To investigate the inflammatory biomarkers levels in patients with COVID-19 presenting chemosensory dysfunctions.Methods
This review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline. A systematic literature search was performed from January 1, 2020, to May 12, 2022. Observational studies that provided data on hematological, biochemical, infection-related indices and cellular immunity, and coagulation function in patients with COVID-19 experiencing smell and/or taste disorders were considered eligible. Effect sizes were reported as standardized mean difference (SMD) with 95% confidence intervals (CI). A negative effect size indicated that the inflammatory biomarker levels were lower among patients with chemosensory dysfunctions.Results
Eleven studies were included. Patients with chemosensory disturbances had lower levels of leukocytes (SMD - 0.18, 95% CI - 0.35 to - 0.01, p = 0.04), lactate dehydrogenase (SMD - 0.45, 95% CI - 0.82 to - 0.09, p = 0.01), IL-6 (SMD - 0.25, 95% CI - 0.44 to - 0.06, p < 0.01), and C-reactive protein (SMD - 0.33, 95% CI - 0.58 to - 0.08, p < 0.01) than patients without chemosensory disturbances.Conclusion
Patients with SARS-CoV-2 infection who have olfactory and gustatory disorders have a lower inflammatory response than patients who do not have chemosensory alterations. The presence of these symptoms may indicate a more favorable clinical course for COVID-19.
SUBMITTER: de Melo EGM
PROVIDER: S-EPMC9467422 | biostudies-literature | 2022 Dec
REPOSITORIES: biostudies-literature
de Melo Elisama Gomes Magalhães EGM Andrade Rayle Monteiro RM de Abreu de Vasconcellos Sara Juliana SJ Dos Santos Priscila Lima PL Tanajura Diego Moura DM Quintans-Júnior Lucindo José LJ Quintans Jullyana de Souza Siqueira JSS Martins-Filho Paulo Ricardo PR
Inflammopharmacology 20220912 6
<h4>Background</h4>There is evidence that chemosensory dysfunctions, including smell and taste disorders, are common findings in patients with SARS-CoV-2 infection. However, the underlying biological mechanisms and the role of inflammatory markers are still poorly understood.<h4>Aim</h4>To investigate the inflammatory biomarkers levels in patients with COVID-19 presenting chemosensory dysfunctions.<h4>Methods</h4>This review was conducted according to the Preferred Reporting Items for Systematic ...[more]