Filbertone Protects Obesity-induced Hypothalamic Inflammation by Reduction of Microglia-mediated Inflammatory Responses

Luthfiyyah Mutsnaini, Jihyeon Yang, Jiye Kim, Chu Sook Kim, Chan Hee Lee, Min Seon Kim, Taesun Park, Tsuyoshi Goto, Rina Yu

Research output: Contribution to journalArticlepeer-review

Abstract

Microglial activation is critical for obesityinduced hypothalamic inflammation and is closely associated with pathologies of metabolic complications. In this study, we investigated the effect of filbertone, a main aroma compound of hazelnuts, on microglia-mediated inflammatory responses in vitro and obesity-induced hypothalamic inflammation in vivo. BV2 microglial cells were stimulated with lipopolysaccharide (LPS) in the presence or absence of filbertone. Meanwhile, C57BL/6 mice were fed for 10- weeks on a high-fat diet (HFD) supplemented with 0.2% filbertone. Levels of inflammatory mediators in microglia or hypothalamus were measured using enzyme-linked immunosorbent assays or quantitative real-time PCR. Filbertone significantly inhibited nitrite oxide production, inducible nitric oxide synthase expression, and inflammatory cytokine production in LPS-stimulated microglia. Filbertone also inhibited LPS-stimulated activation of inflammatory signaling molecules, mitogen-activated protein kinases (MAPK) such as extracellular signal-regulated kinases and p38, and the degradation of inhibitory nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) in microglia. Moreover, filbertone supplementation markedly suppressed the expression of inflammatory cytokines and microglia activation marker in the hypothalamus of obese mice fed a HFD. These results suggest that filbertone reduces HFD-induced microglial activation through inhibition of the MAPK and NF-κB pathways, and thus protects obesityinduced hypothalamic inflammation. Filbertone may be useful for protection of microglia-mediated hypothalamic inflammation in obese condition and related metabolic complications.

Original languageEnglish
Pages (from-to)86-92
Number of pages7
JournalBiotechnology and Bioprocess Engineering
Volume26
Issue number1
DOIs
Publication statusPublished - 2021 Jan

Bibliographical note

Funding Information:
This work was supported by Basic Science Research Program through the NRF funded by the Ministry of Education (2018R1D1A1B07041643).

Publisher Copyright:
© 2021, The Korean Society for Biotechnology and Bioengineering and Springer.

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology
  • Biomedical Engineering

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