PMID- 36585647 OWN - NLM STAT- MEDLINE DCOM- 20230103 LR - 20230103 IS - 2662-7671 (Electronic) IS - 2662-7671 (Linking) VI - 22 IP - 1 DP - 2022 Dec 30 TI - The ethanolic extract of Curcuma longa grown in Korea exhibits anti-neuroinflammatory effects by activating of nuclear transcription factor erythroid-2-related factor 2/heme oxygenase-1 signaling pathway. PG - 343 LID - 10.1186/s12906-022-03825-5 [doi] LID - 343 AB - BACKGROUND: Curcuma longa has been used as spices, food preservative, coloring material, and traditional medicine. This plant also has long been used for a variety of diseases including dyslipidemia, stomach disorders, arthritis, and hepatic diseases. The aim of the present investigation was to examine the anti-neuroinflammatory effects of the 50% ethanolic extract of C. longa in lipopolysaccharide (LPS)-induced BV2 microglial cells. METHODS: Griess reaction was employed to measure the production of nitric oxide (NO), and the levels of prostaglandin E2 (PGE(2)) and pro-inflammatory cytokines such as interleukin 1-beta (IL-1beta), IL-6 and tumor necrosis factor-alpha (TNF-alpha) were determined by using profit ELISA kits. Western blotting was used to determine the expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), nuclear factor kappa B (NF-kappaB), mitogen activated protein kinases (MAPKs), heme oxygenase-1 (HO-1) and nuclear factor erythroid-2-related factor 2 (Nrf2). RESULTS: Pre-treatment with CLE inhibited the overproduction and overexpression of pro-inflammatory mediators including NO, PGE(2), iNOS, COX-2, and pro-inflammatory cytokines such as IL-1beta, IL-6 and TNF-alpha in LPS-induced BV2 cells. In addition, CLE suppressed the activation of the NF-kappaB and three MAPK signaling pathways. Treatment with CLE induced HO-1 protein expression by activating Nrf2 pathway, and inhibiting the HO-1 expression reversed the anti-inflammatory effect of CLE. CONCLUSION: CLE showed anti-neuroinflammatory effects against LPS-induced microglial cells activation through the inhibition of production and expression of pro-inflammatory mediators by negative regulation of the NF-kappaB and MAPK signaling pathways. These anti-neuroinflammatory effects of CLE were mediated by HO-1/Nrf2 signaling pathway. Taken together, the present study suggests a potent effect of CLE to prevent neuroinflammatory diseases. It is necessary to perform additional efficacy evaluation through in vivo experiments. CI - (c) 2022. The Author(s). FAU - Kim, Kwan-Woo AU - Kim KW AD - Department of Herbal Crop Research, National Institute of Horticultural and Herbal Sciences, Rural Development Administration, 27709, Eumseong, Republic of Korea. FAU - Lee, Young-Seob AU - Lee YS AD - Department of Herbal Crop Research, National Institute of Horticultural and Herbal Sciences, Rural Development Administration, 27709, Eumseong, Republic of Korea. youngseoblee@korea.kr. FAU - Yoon, Dahye AU - Yoon D AD - Department of Herbal Crop Research, National Institute of Horticultural and Herbal Sciences, Rural Development Administration, 27709, Eumseong, Republic of Korea. FAU - Kim, Geum-Soog AU - Kim GS AD - Department of Herbal Crop Research, National Institute of Horticultural and Herbal Sciences, Rural Development Administration, 27709, Eumseong, Republic of Korea. FAU - Lee, Dae Young AU - Lee DY AD - Department of Herbal Crop Research, National Institute of Horticultural and Herbal Sciences, Rural Development Administration, 27709, Eumseong, Republic of Korea. dylee0809@gmail.com. LA - eng GR - PJ01497501/Cooperative Research Program for Agricultural Science & Technology Development/ GR - PJ01497501/Cooperative Research Program for Agricultural Science & Technology Development/ GR - PJ01497501/Cooperative Research Program for Agricultural Science & Technology Development/ GR - PJ01497501/Cooperative Research Program for Agricultural Science & Technology Development/ GR - PJ01497501/Cooperative Research Program for Agricultural Science & Technology Development/ PT - Journal Article DEP - 20221230 PL - England TA - BMC Complement Med Ther JT - BMC complementary medicine and therapies JID - 101761232 RN - 0 (NF-kappa B) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (Interleukin-6) RN - EC 1.14.14.18 (Heme Oxygenase-1) RN - 0 (Lipopolysaccharides) RN - 0 (NF-E2-Related Factor 2) RN - EC 1.14.99.1 (Cyclooxygenase 2) RN - 0 (Cytokines) RN - 0 (Inflammation Mediators) SB - IM MH - *NF-kappa B/metabolism MH - *Tumor Necrosis Factor-alpha/metabolism MH - Interleukin-6/metabolism MH - Neuroinflammatory Diseases MH - Heme Oxygenase-1/metabolism MH - Lipopolysaccharides/pharmacology MH - Curcuma MH - NF-E2-Related Factor 2/metabolism MH - Cyclooxygenase 2/metabolism MH - Cell Line MH - Signal Transduction MH - Cytokines/metabolism MH - Inflammation Mediators MH - Republic of Korea PMC - PMC9804997 OTO - NOTNLM OT - Anti-neuroinflammation OT - BV2 microglial cells OT - Curcuma longa OT - Heme oxigenase-1 OT - Mitogen-activated protein kinases OT - Nuclear factor kappa B COIS- The authors declare that they have no conflict of interest. EDAT- 2022/12/31 06:00 MHDA- 2023/01/04 06:00 PMCR- 2022/12/30 CRDT- 2022/12/30 23:46 PHST- 2022/09/07 00:00 [received] PHST- 2022/12/20 00:00 [accepted] PHST- 2022/12/30 23:46 [entrez] PHST- 2022/12/31 06:00 [pubmed] PHST- 2023/01/04 06:00 [medline] PHST- 2022/12/30 00:00 [pmc-release] AID - 10.1186/s12906-022-03825-5 [pii] AID - 3825 [pii] AID - 10.1186/s12906-022-03825-5 [doi] PST - epublish SO - BMC Complement Med Ther. 2022 Dec 30;22(1):343. doi: 10.1186/s12906-022-03825-5.