Cytokine profile in multiple sclerosis patients with and without Covid-19.

OBJECTIVE: Aim: To investigate the possible effect of COVID-19 disease on cytokine profile and some circulating growth factors in patients with multiple sclerosis (MS). PATIENTS AND METHODS: Materials and Methods: Serum cytokine levels as well as growth factors content were assessed be means of a solid phase enzyme linked­immunosorbent assay in 97 MS patients of which 41 had and 56 did not have confirmed COVID-19 in the past 4-6-month period, and 30 healthy individuals who were age­, and gender­matched. RESULTS: Results: Some proinflammatory cytokine (such as TNFα, IFNγ) levels were higher while anti-inflammatory cytokine, namely IL­4, was lower in MS patients compared to controls indicating Th1/Th2 imbalance. Our findings revealed that the imbalance of circulating Th1/Th2 cytokines in MS patients after SARS-CoV-2 infection became even more pronounced, thus, might be a reason for the disease deterioration. Furthermore, nuclear factor κB level in MS patients after COVID-19 was found significantly elevated from that with no history of SARS-CoV-2 infection, and could be the cause of proinflammatory cytokines overexpression. CONCLUSION: Conclusions: Our findings revealed that immunopathology of MS is associated with a Th1/Th2 imbalance, furthermore, SARS-CoV-2 infection can lead to the deterioration of this condition in MS patients, causing even more pronounced overexpression of proinflammatory cytokines and decrease in anti-inflammatory cytokines. Our results also indicated that studied growth factors can be involved in MS development but exact mechanism is not clearly understood and requires further research.