IL6 and schizophrenia: In turn, in a recent study by Y. Zhu et al. (2023) found that an increase in the concentration of inflammatory cytokines (IL-6, IL-1β, IL-18, IL-8) in the peripheral blood of patients with schizophrenia was associated with the perivascular accumulation of CD163+ macrophages, surrounding vessels of small, medium, and large diameter [109].