PMID- 18725324 OWN - NLM STAT- MEDLINE DCOM- 20081203 LR - 20161124 IS - 1567-5769 (Print) IS - 1567-5769 (Linking) VI - 8 IP - 12 DP - 2008 Dec 10 TI - Wogonin inhibits microglial cell migration via suppression of nuclear factor-kappa B activity. PG - 1658-62 LID - 10.1016/j.intimp.2008.07.018 [doi] AB - Previously, we and others have demonstrated that wogonin, an active component from the root of Scutellaria baicalensis Georgi, has a neuroprotective effect in cerebral ischemic insult. The neuroprotective effect of wogonin may at least in part be due to its anti-inflammatory properties. Microglial cells, well-known residential macrophages in the central nervous system, migrate to the ischemic lesion and play a pivotal role in the development of chronic inflammation. In the present study, we observed that wogonin potently inhibited microglial migration toward a chemokine, monocyte chemoattractant protein-1 (MCP-1). The anti-migratory effect of wogonin was provoked at nanomolar concentrations, at which wogonin did not significantly inhibit the production of cytokines and chemokines. NF-kappaB has previously shown to regulate microglial cell migration, and activation of cAMP-signaling pathway has also been associated with inhibition of microglial cell motility. In the present study, wogonin at low micromolar concentrations completely suppressed the activity of NF-kappaB in MCP-1-stimulated microglia, and NF-kappaB inhibitors such as N-acetyl cysteine and pyrrolidinedithiocarbamate inhibited the MCP-1-induced migration of microglial cells. However, wogonin did not stimulate the production of cAMP in microglial cells. Our results indicate that the anti-inflammatory activity of wogonin is exerted at least in part by suppressing microglial cell motility via inhibition of NF-kappaB activity. FAU - Piao, Hua Zi AU - Piao HZ AD - Department of Pharmacology, College of Medicine, Yanbian University, Yanji, China. FAU - Choi, In Young AU - Choi IY FAU - Park, Jin-Sun AU - Park JS FAU - Kim, Hee-Sun AU - Kim HS FAU - Cheong, Jae Hoon AU - Cheong JH FAU - Son, Kun Ho AU - Son KH FAU - Jeon, Su Jin AU - Jeon SJ FAU - Ko, Kwang Ho AU - Ko KH FAU - Kim, Won-Ki AU - Kim WK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080824 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CCL5) RN - 0 (Drugs, Chinese Herbal) RN - 0 (Flavanones) RN - 0 (NF-kappa B) RN - E0399OZS9N (Cyclic AMP) RN - POK93PO28W (wogonin) SB - IM MH - Animals MH - Cell Movement/drug effects MH - Chemokine CCL2/antagonists & inhibitors MH - Chemokine CCL5/antagonists & inhibitors MH - Cyclic AMP/biosynthesis MH - Drugs, Chinese Herbal/*pharmacology MH - Flavanones/*pharmacology MH - Microglia/*drug effects/physiology MH - NF-kappa B/*antagonists & inhibitors MH - Rats MH - Rats, Sprague-Dawley MH - Scutellaria/*chemistry EDAT- 2008/08/30 09:00 MHDA- 2008/12/17 09:00 CRDT- 2008/08/30 09:00 PHST- 2008/04/30 00:00 [received] PHST- 2008/07/29 00:00 [accepted] PHST- 2008/08/30 09:00 [pubmed] PHST- 2008/12/17 09:00 [medline] PHST- 2008/08/30 09:00 [entrez] AID - S1567-5769(08)00237-3 [pii] AID - 10.1016/j.intimp.2008.07.018 [doi] PST - ppublish SO - Int Immunopharmacol. 2008 Dec 10;8(12):1658-62. doi: 10.1016/j.intimp.2008.07.018. Epub 2008 Aug 24.