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Evaluation of circulating leucocyte populations both in subjects with previous SARS-COV-2 infection and in healthy subjects after vaccination.
Grimaldi, Vincenzo; Benincasa, Giuditta; Moccia, Giusi; Sansone, Annunziata; Signoriello, Giuseppe; Napoli, Claudio.
  • Grimaldi V; U.O.C. Division of Clinical Immunology, Immunohematology, Transfusion Medicine and Transplant Immunology. Clinical Department of Internal Medicine and Specialistic Units, University of Campania "L. Vanvitelli", 80138 Naples, Italy. Electronic address: vincenzo.grimaldi@policliniconapoli.it.
  • Benincasa G; Department of Advanced Medical and Surgical Sciences (DAMSS), University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
  • Moccia G; U.O.C. Division of Clinical Immunology, Immunohematology, Transfusion Medicine and Transplant Immunology. Clinical Department of Internal Medicine and Specialistic Units, University of Campania "L. Vanvitelli", 80138 Naples, Italy.
  • Sansone A; U.O.C. Division of Clinical Immunology, Immunohematology, Transfusion Medicine and Transplant Immunology. Clinical Department of Internal Medicine and Specialistic Units, University of Campania "L. Vanvitelli", 80138 Naples, Italy.
  • Signoriello G; Statistical Unit, Department of Mental Health and Preventive Medicine, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
  • Napoli C; U.O.C. Division of Clinical Immunology, Immunohematology, Transfusion Medicine and Transplant Immunology. Clinical Department of Internal Medicine and Specialistic Units, University of Campania "L. Vanvitelli", 80138 Naples, Italy; Department of Advanced Medical and Surgical Sciences (DAMSS), Univer
J Immunol Methods ; 502: 113230, 2022 03.
Article in English | MEDLINE | ID: covidwho-1720358
ABSTRACT
Innate immune mechanisms are central players in response to the binding of pathogens to pattern-recognition receptors providing a crucial initial block on viral replication. Moreover, innate immune response mobilizes cells of the cellular-mediated immune system, which develop into effector cells that promote viral clearance. Here, we observed circulating leukocyte T cell response in healthy subjects, COVID-19 infected, and in healthy vaccinated subjects. We found a significant CD8+ T cells (p < 0,05) decrease and an augmented CD4+/CD8+ ratio (p < 0,05) in COVID-19 infected group compared with vaccinated subjects. In addition, healthy vaccinated subjects have a significant increased expression of CD8+ T cells, and a reduction of CD4+/CD8+ ratio with respect to subjects previously COVID-19 infected. Central Memory and Terminal Effector Memory cells (TEMRA) increased after vaccine but not among groups.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: CD4-Positive T-Lymphocytes / CD8-Positive T-Lymphocytes / COVID-19 Vaccines / COVID-19 / Memory T Cells Type of study: Experimental Studies / Observational study / Randomized controlled trials Topics: Vaccines Limits: Adult / Aged / Female / Humans / Male / Middle aged Language: English Journal: J Immunol Methods Year: 2022 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: CD4-Positive T-Lymphocytes / CD8-Positive T-Lymphocytes / COVID-19 Vaccines / COVID-19 / Memory T Cells Type of study: Experimental Studies / Observational study / Randomized controlled trials Topics: Vaccines Limits: Adult / Aged / Female / Humans / Male / Middle aged Language: English Journal: J Immunol Methods Year: 2022 Document Type: Article