Endothelin-1 stimulates human monocytes in vitro to release TNF-, IL-1/ and IL-6
1993
Endothelin-1 Stimulates Cytokine Release from Monocytes and Macrophages
publication
Evidence: moderate
Author Information
Author(s): E. Helset, T. Sildnes, R. Seljelid, Z.S. Konopski
Primary Institution: University of Tromsø
Hypothesis
ET-1 might play a role in the pathophysiology of inflammatory reactions.
Conclusion
ET-1 stimulates monocytes and macrophages to release cytokines, indicating its potential role in regulating inflammatory responses.
Supporting Evidence
- ET-1 increased secretion of TNF-, IL-1, and IL-6 in a dose- and time-dependent manner.
- The maximal response was a 200 to 400% increase in cytokine release.
- Monocytes secreted generally more TNF- and IL-1 than macrophages in response to ET-1 stimulation.
Takeaway
Endothelin-1 helps certain immune cells release important substances that can cause inflammation.
Methodology
Human monocytes and macrophages were stimulated with ET-1 in vitro, and the secretion of TNF-, IL-1, and IL-6 was measured.
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