Abstract
Objective and design: To clarify the molecular mechanism of polyenylphosphatidylcholine (PPC), we examined the involvement of reactive oxygen species (ROS) and NADPH oxidase 4 (Nox4) in human hepatic stellate cells (HSCs). Material: Using human LX-2 HSC cells, we examined the effects of PPC on expression of α-smooth muscle actin (α-SMA) and collagen 1, generation of ROS, Nox4 expression, p38 activation and cell proliferation, induced by transforming growth factor β1 (TGFβ1). Results: PPC suppressed ROS which are induced by TGFβ1, phosphorylation of p38MAPK, and expression levels of α-SMA and collagen 1 in a dose-dependent manner. Higher concentrations of PPC also suppressed Nox4 levels. Conclusion: These results suggest that ROS and Nox4 induced by TGFβ1 are the therapeutic targets of PPC in the suppression of human hepatic stellate cell activation.
| Original language | English |
|---|---|
| Pages (from-to) | 597-604 |
| Number of pages | 8 |
| Journal | Inflammation Research |
| Volume | 60 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2011 |
Keywords
- Hepatic stellate cells
- NADPH oxidase 4
- Oxidative stress
- Polyenylphosphatidylcholine