Inhibitory effects of bisbenzylisoquinolines on synthesis of inflammatory cytokines
Author Information
Author(s): W. Kim Seow, Kazuhiro Nakamura, Yukio Sugimura, Yukihiro Sugimoto, Yasuyuki Yamada, David P. Fairlie, Y.H. Thong
Primary Institution: The University of Queensland
Hypothesis
The bisbenzylisoquinoline compounds inhibit the synthesis of IL-1 and TNF by human monocytes-macrophages.
Conclusion
The study found that eleven bisbenzylisoquinoline compounds significantly inhibited the synthesis of IL-1 and TNF, suggesting their potential therapeutic value in inflammatory diseases.
Supporting Evidence
- All eleven bisbenzylisoquinoline compounds showed dose-dependent inhibition of IL-1 and TNF production.
- IC50 values for the compounds ranged from 4-26 µM for IL-1 and 2-18 µM for TNF.
- Tetrandrine, a bisbenzylisoquinoline, has shown therapeutic efficacy in animal models of human diseases.
Takeaway
This study shows that certain plant compounds can help reduce inflammation in the body by stopping the production of specific proteins that cause it.
Methodology
The study involved isolating monocytes-macrophages from human blood and treating them with various bisbenzylisoquinoline compounds to measure the production of IL-1 and TNF.
Limitations
The exact mechanism of action of bisbenzylisoquinolines is not well understood, and further studies are needed to explore their effects in vivo.
Participant Demographics
Three healthy non-smoking adults not on any medication for at least 2 weeks.
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