PMID- 30747999 OWN - NLM STAT- MEDLINE DCOM- 20200413 LR - 20211204 IS - 1528-1167 (Electronic) IS - 0013-9580 (Linking) VI - 60 IP - 4 DP - 2019 Apr TI - Curcumin reduces development of seizurelike events in the hippocampal-entorhinal cortex slice culture model for epileptogenesis. PG - 605-614 LID - 10.1111/epi.14667 [doi] AB - OBJECTIVE: Inhibition of the mammalian target of rapamycin (mTOR) pathway could be antiepileptogenic in temporal lobe epilepsy (TLE), possibly via anti-inflammatory actions. We studied effects of the mTOR inhibitor rapamycin and the anti-inflammatory compound curcumin-also reported to inhibit the mTOR pathway-on epileptogenesis and inflammation in an in vitro organotypic hippocampal-entorhinal cortex slice culture model. METHODS: Brain slices containing hippocampus and entorhinal cortex were obtained from 6-day-old rat pups and maintained in culture for up to 3 weeks. Rapamycin or curcumin was added to the culture medium from day 2 in vitro onward. Electrophysiological recordings revealed epileptiformlike activity that developed over 3 weeks. RESULTS: In week 3, spontaneous seizurelike events (SLEs) could be detected using whole cell recordings from CA1 principal neurons. The percentage of recorded CA1 neurons displaying SLEs was lower in curcumin-treated slice cultures compared to vehicle-treated slices (25.8% vs 72.5%), whereas rapamycin did not reduce SLE occurrence significantly (52%). Western blot for phosphorylated-S6 (pS6) and phosphorylated S6K confirmed that rapamycin inhibited the mTOR pathway, whereas curcumin only lowered pS6 expression at one phosphorylation site. Real-time quantitative polymerase chain reaction results indicated a trend toward lower expression of inflammatory markers IL-1beta and IL-6 and transforming growth factor beta after 3 weeks of treatment with rapamycin and curcumin compared to vehicle. SIGNIFICANCE: Our results show that curcumin suppresses SLEs in the combined hippocampal-entorhinal cortex slice culture model and suggest that its antiepileptogenic effects should be further investigated in experimental models of TLE. CI - Wiley Periodicals, Inc. (c) 2019 International League Against Epilepsy. FAU - Drion, Cato M AU - Drion CM AUID- ORCID: 0000-0002-3926-3110 AD - Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands. FAU - Kooijman, Lieneke AU - Kooijman L AD - Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands. FAU - Aronica, Eleonora AU - Aronica E AD - Amsterdam UMC, University of Amsterdam, Department of (Neuro) Pathology, Amsterdam Neuroscience, Amsterdam, The Netherlands. AD - Stichting Epilepsie Instellingen Nederland (SEIN), The Netherlands. FAU - van Vliet, Erwin A AU - van Vliet EA AUID- ORCID: 0000-0001-5747-3202 AD - Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands. AD - Amsterdam UMC, University of Amsterdam, Department of (Neuro) Pathology, Amsterdam Neuroscience, Amsterdam, The Netherlands. FAU - Wadman, Wytse J AU - Wadman WJ AD - Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands. FAU - Chameau, Pascal AU - Chameau P AD - Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands. FAU - Gorter, Jan A AU - Gorter JA AD - Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands. LA - eng GR - EF 14-08/Epilepsie Fonds/International GR - 602102/European Union's Seventh Framework Program (FP7, Epitarget)/International GR - 602391/EPISTOP/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190212 PL - United States TA - Epilepsia JT - Epilepsia JID - 2983306R RN - 0 (Antioxidants) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - IT942ZTH98 (Curcumin) SB - IM MH - Animals MH - Antioxidants/*pharmacology MH - Curcumin/*pharmacology MH - Entorhinal Cortex/*drug effects/metabolism MH - Hippocampus/*drug effects/metabolism MH - Organ Culture Techniques MH - Rats MH - Rats, Sprague-Dawley MH - Seizures/*metabolism MH - TOR Serine-Threonine Kinases/antagonists & inhibitors OTO - NOTNLM OT - antiepileptogenesis OT - inflammation OT - mammalian target of rapamycin OT - mitogen-activated protein kinase OT - rat OT - seizurelike event EDAT- 2019/02/13 06:00 MHDA- 2020/04/14 06:00 CRDT- 2019/02/13 06:00 PHST- 2018/10/31 00:00 [received] PHST- 2019/01/17 00:00 [revised] PHST- 2019/01/17 00:00 [accepted] PHST- 2019/02/13 06:00 [pubmed] PHST- 2020/04/14 06:00 [medline] PHST- 2019/02/13 06:00 [entrez] AID - 10.1111/epi.14667 [doi] PST - ppublish SO - Epilepsia. 2019 Apr;60(4):605-614. doi: 10.1111/epi.14667. Epub 2019 Feb 12.