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Adipose-Derived Mesenchymal Stromal Cells Co-Cultured with Primary Mixed Glia to Reduce Prion-Induced Inflammation
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Chunghyuldan attenuates brain microglial inflammatory response.

Kyong Nyon Nam1, Hoon-Ji Jung, Mi-Hyun Kim

  • 1Department of Medical Science, Graduate School of East-West Medical Science, East-West Integrated Medical Science Research Center, Kyung Hee University, 1 Seochun, Yongin-si 446-701, Korea.

Canadian Journal of Physiology and Pharmacology
|June 16, 2009
PubMed
Summary

Chunghyuldan, a herbal medicine, effectively reduces inflammation in activated brain microglia. This suggests its potential for neuroprotection against conditions like stroke and neurodegenerative diseases.

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Area of Science:

  • Neuroscience
  • Immunology
  • Pharmacology

Background:

  • Microglial cells are key players in central nervous system (CNS) inflammation.
  • Chronic microglial activation can harm neurons, making them targets for treating stroke and neurodegenerative diseases.
  • Chunghyuldan is a herbal formula with anti-inflammatory properties, potentially beneficial for CNS disorders.

Purpose of the Study:

  • To investigate the effects of Chunghyuldan on microglial activation.
  • To determine if Chunghyuldan can suppress the release of inflammatory mediators from activated microglia.

Main Methods:

  • Rat brain microglia were treated with lipopolysaccharide (LPS) to induce activation.
  • Chunghyuldan's effect on nitric oxide (NO) release was measured.
  • Real-time reverse transcriptase PCR analyzed the expression of key inflammatory genes (iNOS, TNF-alpha, IL-1beta, COX-2).
  • Production of TNF-alpha and prostaglandin E2 was quantified.
  • Western blotting assessed the phosphorylation of ERK1/2 and p38 signaling pathways.

Main Results:

  • Chunghyuldan significantly inhibited LPS-induced nitric oxide release.
  • It attenuated the expression of mRNAs for inducible NO synthase, tumor necrosis factor-alpha, interleukin-1beta, and cyclooxygenase-2.
  • Chunghyuldan reduced the production of TNF-alpha and prostaglandin E2.
  • It decreased the phosphorylation of ERK1/2 and p38 signaling proteins.

Conclusions:

  • Chunghyuldan suppresses microglial activation by reducing the release of pro-inflammatory molecules.
  • These findings support Chunghyuldan's potential as a therapeutic agent for neuroprotection in CNS diseases.