PMID- 9106265 OWN - NLM STAT- MEDLINE DCOM- 19970724 LR - 20190831 IS - 0197-0186 (Print) IS - 0197-0186 (Linking) VI - 30 IP - 4-5 DP - 1997 Apr-May TI - Protein tyrosine kinase inhibitors decrease lipopolysaccharide-induced proinflammatory cytokine production in mixed glia, microglia-enriched or astrocyte-enriched cultures. PG - 491-7 AB - Proinflammatory cytokines, tumor necrosis factor-alpha (TNF alpha), interleukin-1 (IL-1), and interleukin-6 (IL-6), produced by glial cells have been implicated in the neuropathogenesis of various diseases. However, the signal transduction pathway(s) for the production of these cytokines in glial cells are not well understood. This study examined the effects of two potent protein tyrosine kinase inhibitors, genistein and tyrphostin A25, on lipopolysaccharide (LPS)-induced production of TNF alpha, IL-1 alpha, and IL-6 in mouse primary mixed glia, microglia- or astrocyte-enriched cultures. LPS dose-dependently increased the production of TNF alpha, IL-1 alpha, and IL-6 from the mixed glia cultures. Genistein or tyrphostin A25 significantly inhibited the LPS-induced production of these cytokines. The LPS-induced TNF alpha, IL-1 alpha, and IL-6 production in microglia- or astrocyte-enriched cultures were also inhibited by tyrphostin A25. These results demonstrate that protein tyrosine kinases are involved in the signaling events of the LPS-induced production of TNF alpha, IL-1 alpha, or IL-6 in microglia or astrocytes, which may provide insights into therapeutic interventions in the pathway for cytokine production in the brain. FAU - Kong, L Y AU - Kong LY AD - Section of Neuropharmacology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA. FAU - Lai, C AU - Lai C FAU - Wilson, B C AU - Wilson BC FAU - Simpson, J N AU - Simpson JN FAU - Hong, J S AU - Hong JS LA - eng PT - Journal Article PL - England TA - Neurochem Int JT - Neurochemistry international JID - 8006959 RN - 0 (Cytokines) RN - 0 (Enzyme Inhibitors) RN - 0 (Inflammation Mediators) RN - 0 (Interleukin-6) RN - 0 (Isoflavones) RN - 0 (Lipopolysaccharides) RN - 0 (Nitriles) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (Tyrphostins) RN - 118409-58-8 (tyrphostin 25) RN - DH2M523P0H (Genistein) RN - EC 2.7.10.1 (Protein-Tyrosine Kinases) SB - IM MH - Animals MH - Astrocytes/drug effects/enzymology/metabolism MH - Cells, Cultured MH - Coculture Techniques MH - Cytokines/*biosynthesis MH - Enzyme Inhibitors/*pharmacology MH - Genistein MH - Inflammation Mediators MH - Interleukin-6/biosynthesis MH - Isoflavones/*pharmacology MH - Lipopolysaccharides/*pharmacology MH - Mice MH - Microglia/drug effects/enzymology/metabolism MH - Neuroglia/drug effects/enzymology/*metabolism MH - Nitriles/*pharmacology MH - Protein-Tyrosine Kinases/*antagonists & inhibitors MH - Signal Transduction MH - Tumor Necrosis Factor-alpha/biosynthesis MH - *Tyrphostins EDAT- 1997/04/01 00:00 MHDA- 1997/04/01 00:01 CRDT- 1997/04/01 00:00 PHST- 1997/04/01 00:00 [pubmed] PHST- 1997/04/01 00:01 [medline] PHST- 1997/04/01 00:00 [entrez] AID - 10.1016/s0197-0186(96)00086-1 [doi] PST - ppublish SO - Neurochem Int. 1997 Apr-May;30(4-5):491-7. doi: 10.1016/s0197-0186(96)00086-1.