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Quaternary alkaloid, pseudocoptisine isolated from tubers of Corydalis turtschaninovi inhibits LPS-induced nitric oxide, PGE(2), and pro-inflammatory cytokines production via the down-regulation of NF-kappaB in RAW 264.7 murine macrophage cells.
Yun KJ, Shin JS, Choi JH, Back NI, Chung HG, Lee KT. Yun KJ, et al. Among authors: back ni. Int Immunopharmacol. 2009 Oct;9(11):1323-31. doi: 10.1016/j.intimp.2009.08.001. Epub 2009 Aug 7. Int Immunopharmacol. 2009. PMID: 19666143