EGCG Reduces IL-6 Synthesis in Osteoblasts
Author Information
Author(s): Shinji Takai, Rie Matsushima-Nishiwaki, Seiji Adachi, Hideo Natsume, Chiho Minamitani, Jun Mizutani, Takanobu Otsuka, Haruhiko Tokuda, Osamu Kozawa
Primary Institution: Gifu University Graduate School of Medicine
Hypothesis
Does (-)-epigallocatechin gallate (EGCG) affect the synthesis of IL-6 in osteoblasts stimulated by PDGF-BB?
Conclusion
EGCG significantly inhibits the PDGF-BB-stimulated synthesis of IL-6 in osteoblasts by suppressing the SAPK/JNK pathway.
Supporting Evidence
- EGCG significantly reduced IL-6 synthesis in both MC3T3-E1 cells and primary-cultured osteoblasts.
- EGCG had no effect on osteocalcin and osteoprotegerin levels in MC3T3-E1 cells.
- EGCG suppressed the PDGF-BB-induced phosphorylation of SAPK/JNK.
Takeaway
EGCG, a compound found in green tea, helps reduce a substance that can cause bone loss in cells that build bones.
Methodology
The study involved treating osteoblast-like MC3T3-E1 cells and primary-cultured osteoblasts with EGCG and measuring IL-6 synthesis and mRNA expression after PDGF-BB stimulation.
Limitations
The study primarily focused on in vitro models, which may not fully represent in vivo conditions.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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