TY - EJOU AU - Loreto, Silvia Di AU - Maccarone, Rita AU - Corvetti, Luigi AU - Sebastiani, Pierluigi AU - Piancatelli, Daniela AU - Adorno, Domenico TI - Differential modulation of interleukin-6 expression by interleukin-1β in neuronal and glial cultures T2 - European Cytokine Network PY - 2003 VL - 14 IS - 2 SN - 1952-4005 AB - We analysed the specific effects of IL-1β immunoneutralization on the expression of IL-6 in different pure cultures of neurones and glia after both experimental subliminal hypoxia and recovery. Whereas the IL-1β-deprivation signal induced a decrease in IL-6 expression and release of normoxic neurones, it provoked an increase in IL-6 protein in hypoxic neurones. Moreover, the direct correlation between IL-1β and IL-6, observed in normal and recovering neuronal cultures, was reversed in hypoxic conditions. These reversals were not observed in glial cells, in which IL-1β immunosuppression led to a decrease in IL-6 under all conditions considered. In conclusion, the IL-1β modulates IL-6 in different ways according to the ambient physiological or pathological conditions, and also acts via different mechanisms, depending on the cellular phenotype. KW - IL-1β KW - IL-6 KW - neurones KW - glia KW - hypoxia DO -