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- W2038473189 abstract "cAMP-dependent signalling cascades regulate a number of CNS functions including brain inflammation processes. In this study, we characterized IL-1-induced IL-6 production in hippocampal cells using H19-7/IGF-IR cells and investigated the effect of changes in intracellular cAMP levels on IL-1 activity. IL-1 potently induced IL-6 mRNA expression with a corresponding increase in IL-6 release, in a time- and dose-dependent manner with a maximal at 24 h and with an EC50 value of 0.11 ng/ml. Cell pre-treatment with the IL-1sR antagonist produced a rightward shift of IL-1 dose-response effect with a corresponding decrease in IL-1 potency. IL-1-induced IL 6 release was attenuated in the presence of the p38 MAPK inhibitor SB203580 but was not significantly affected by the PKA inhibitor KT 5720. Western blotting analysis of phospho-CREB cell content showed a marked increase in CREB activation. Similar results were obtained by pharmacologically increasing cAMP using dibutyryl cyclic adenosine monophosphate (dbcAMP) or the cAMP-specific type-4 phosphodiesterase inhibitor rolipram. Both dbcAMP and rolipram increased IL-6 production to about 50% of IL-1 effect. However, in the presence of IL-1, IL-6 production was further potentiated by either dbcAMP and rolipram, reaching 300% and 500% IL-1-induced levels. These data implicate the role of cAMP-dependent pathways on IL-6 production in neuronal cells and suggest novel synergistic mechanisms of regulation of cytokine production in brain." @default.
- W2038473189 created "2016-06-24" @default.
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- W2038473189 date "2006-10-01" @default.
- W2038473189 modified "2023-10-11" @default.
- W2038473189 title "Synergistic effects of cAMP-dependent signalling pathways and IL-1 on IL-6 production by H19-7/IGF-IR neuronal cells" @default.
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- W2038473189 doi "https://doi.org/10.1016/j.cellsig.2006.01.006" @default.
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