
Cognitive symptoms persisting beyond the acute phase of COVID-19 infection are commonly described for up to 2 years after infection. The relationship between cognitive performance, in particular episodic memory processes observed chronically after infection, and cytokine levels in the acute phase of COVID-19 has not yet been identified in humans. To determine whether the levels of cytokines IL1β, IL-6 and TNFα secreted in the acute phase of SARS-CoV-2 infection are associated and predict verbal and visuospatial episodic memory performance in humans 6 to 9 months and 12 to 15 months post-infection. The associations and predictive value of the concentration of cytokines measured in acute phase (IL-1β, IL-6, TNFα) from plasma samples of N = 33 hospitalized COVID-19 patients (mean age 61 years, 39-78, 65% in intensive care) in relation to their verbal and visuospatial episodic memory performance measured at 6-9 months and 12-15 months post-infection were analyzed. To do this, we used Spearman correlations and generalised linear mixed models. IL-1β levels were associated with verbal episodic memory total recall scores 6-9 months post-infection. At 12-15 months post-infection IL-6 predicted verbal episodic memory score. This study demonstrated that the severity of inflammatory reaction at acute phase of SARS-CoV-2 infection predicts verbal episodic memory performance in the long-term post-infection.
Male, Adult, COVID-19 / blood, 616.8, Long COVID, Science, Memory, Episodic, Interleukin-1beta, 150, 613, Article, Interleukin-6 / blood, Humans; COVID-19/blood; COVID-19/immunology; Middle Aged; Male; Female; Aged; Adult; SARS-CoV-2; Cytokines/blood; Interleukin-1beta/blood; Interleukin-6/blood; Memory, Episodic; Tumor Necrosis Factor-alpha/blood; COVID-19; Cognition; Immunity; Long COVID; Memory; Post-COVID, Tumor Necrosis Factor-alpha / blood, Cognition, Memory, COVID-19 / immunology, 616, 617, Humans, Aged, 616.0757, SARS-CoV-2, Interleukin-6, Tumor Necrosis Factor-alpha, Q, Immunity, R, COVID-19, Cytokines / blood, Middle Aged, 616.89, Post-COVID, Interleukin-1beta / blood, Medicine, Cytokines, Female
Male, Adult, COVID-19 / blood, 616.8, Long COVID, Science, Memory, Episodic, Interleukin-1beta, 150, 613, Article, Interleukin-6 / blood, Humans; COVID-19/blood; COVID-19/immunology; Middle Aged; Male; Female; Aged; Adult; SARS-CoV-2; Cytokines/blood; Interleukin-1beta/blood; Interleukin-6/blood; Memory, Episodic; Tumor Necrosis Factor-alpha/blood; COVID-19; Cognition; Immunity; Long COVID; Memory; Post-COVID, Tumor Necrosis Factor-alpha / blood, Cognition, Memory, COVID-19 / immunology, 616, 617, Humans, Aged, 616.0757, SARS-CoV-2, Interleukin-6, Tumor Necrosis Factor-alpha, Q, Immunity, R, COVID-19, Cytokines / blood, Middle Aged, 616.89, Post-COVID, Interleukin-1beta / blood, Medicine, Cytokines, Female
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