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Older Adults Who Maintained a Regular Physical Exercise Routine before the Pandemic Show Better Immune Response to Vaccination for COVID-19. | LitMetric

AI Article Synopsis

Article Abstract

Background: In this study, we aimed to investigate the specific-antibody response to the COVID-19 vaccination and the immunophenotyping of T cells in older adults who were engaged or not in an exercise training program before the pandemic.

Methods: Ninety-three aged individuals (aged between 60 and 85 years) were separated into 3 groups: practitioners of physical exercise vaccinated with CoronaVac (PE-Co, = 46), or vaccinated with ChadOx-1 (PE-Ch, = 23), and non-practitioners vaccinated with ChadOx-1 (NPE-Ch, = 24). Blood samples were collected before (pre) and 30 days after vaccination with the second vaccine dose.

Results: Higher IgG levels and immunogenicity were found in the PE-Ch and NPE-Ch groups, whereas increased IgA levels were found only in the PE-Ch group post-vaccination. The PE-Co group showed a positive correlation between the IgA and IgG values, and lower IgG levels post-vaccination were associated with age. Significant alterations in the percentage of naive (CD28+CD57-), double-positive (CD28+CD57+), and senescent (CD28-CD57+) CD4+ T and CD8+ T cells were found post-vaccination, particularly in the PE-Ch group.

Conclusions: The volunteers vaccinated with the ChadOx-1 presented not only a better antibody response but also a significant modulation in the percentage of T cell profiles, mainly in the previously exercised group.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9915291PMC
http://dx.doi.org/10.3390/ijerph20031939DOI Listing

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