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Abstract Title:

Parthenolide, a feverfew-derived phytochemical, ameliorates obesity and obesity-induced inflammatory responses via the Nrf2/Keap1 pathway.

Abstract Source:

Pharmacol Res. 2019 Jul ;145:104259. Epub 2019 May 9. PMID: 31078744

Abstract Author(s):

Chae Young Kim, Bobin Kang, Hyung Joo Suh, Hyeon-Son Choi

Article Affiliation:

Chae Young Kim

Abstract:

Parthenolide (PL) is one of the most abundant sesquiterpene lactones found in the plant feverfew (Tanacetum parthenium (L.) Sch.Bip.). PL was investigated for its effect on obesity and obesity-induced inflammatory/oxidant responses in vitro and in vivo. An obesity-induced inflammatory response was induced in various co-culture systems using adipocytes (3T3-L1) and macrophages (RAW264.7) in vitro and the effect of PL and its mechanism of action were determined. PL effectively suppressed the adiposity-induced inflammatory responses by downregulating IL-6 (40-42%) and MCP-1 (26-37%) in 3T3-CM-cultured macrophages and contact co-culture system. PL also favorably regulated the dysregulations of adiponectin and resistin in macrophage-conditioned medium (RAW-CM)-cultured adipocytes. In transwell system of adipocyte and macrophage, PL was shown to upregulated Nrf2 and its target molecule, HO-1 by promoting nuclear translocation of Nrf2. In particular, in siRNA knockdown study, the PL-mediated anti-inflammatory response was exerted via the Nrf2/Keap1 pathway. In animal study using high-fat diet (HFD)-fed mice, PL-administered mice showed a significant reduction in body weight and white adipose tissues (WATs). This PL-mediated anti-obese effect was connected to anti-inflammatory responses with the regulation of inflammatory cytokines, and the downregulation of NF-κB and MAPKs. Furthermore, PL differentially modulated CD11c and CD206, which are pro-/anti-inflammatory phenotypes of ATMs, in stroma vascular fraction (SVF) and immunohistochemistry (IHC) staining analyses. PL also regulated the level of (anti)oxidant molecules with the activation of Nrf2/Keap1signaling. Taken together, PL inhibited obesity and obesity-induced inflammatory responses via the activation of Nrf2/Keap1 signaling, indicating a potential of PL as a functional agent to control obesity-related diseases.

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Sayer Ji
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