ArticleRheumatology international2004
Interleukin-18 is regulated by G protein pathways and protein kinase signals in human fibroblasts.
Article in Rheumatology international, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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0 citing papers in PubMed, 3 citations in OpenAlex.
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2 authors at 1 institution in 1 country.
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Abstract
Interleukin-18 (IL-18) is a member of the IL-1 cytokine family and has proinflammatory activity. It has been detected in osteoarthritic (OA) and at higher levels in rheumatoid arthritic (RA) synovial tissue. Therefore we investigated major signal transduction pathways for their contribution to IL-18 expression. Here we report that cyclic adenosine monophosphate reduced and ionomycin increased IL-18 mRNA in RA synovial fibroblasts (SF) but not in OA SF. Moreover, activation of G-proteins by Mas-7 augmented IL-18 reverse transcriptase polymerase chain reaction signals in OA SF but not in RA SF. Specific protein kinase C activator phorbol myristate acetate reduced transcription and secretion of IL-18 in RA SF and OA SF. Staurosporine changed spontaneous IL-18 mRNA levels and increased the secretion of IL-18 protein. We conclude that G-protein activation and protein kinase C activation might partially be responsible for elevated IL-18 levels during RA.
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