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Isolation of Rat Portal Fibroblasts by In situ Liver Perfusion
Published on: June 29, 2012
Mononuclear cells in liver fibrosis
Fabio Marra1, Sara Aleffi, Sara Galastri
1Dipartimento di Medicina Interna, University of Florence, Viale Morgagni, 85, 50134, Florence, Italy. f.marra@dmi.unifi.it
Seminars in Immunopathology
|June 18, 2009
Summary
Mononuclear cells, including macrophages and lymphocytes, play a dual role in liver fibrosis, promoting its development and resolution. Targeting these cells offers a promising therapeutic strategy for fibrosis.
Area of Science:
- Immunology
- Cell Biology
- Pathology
Background:
- Fibrosis is a complex wound healing response involving myofibroblasts and crosstalk with immune cells.
- Macrophages, T lymphocytes, and NK cells are key players in liver fibrosis development and resolution.
- The roles of NKT and B cells in fibrosis are increasingly recognized.
Purpose of the Study:
- To elucidate the multifaceted roles of mononuclear cells in liver fibrogenesis and resolution.
- To highlight the regulatory functions of immune cells in the fibrotic process.
- To identify mononuclear cells as potential therapeutic targets for liver fibrosis.
Main Methods:
- Review of existing literature on immune cell involvement in liver fibrosis.
- Analysis of cytokine profiles and cellular interactions in fibrotic liver models.
- Examination of immune cell-mediated matrix degradation and cell killing mechanisms.
Main Results:
- Macrophages and monocytes contribute to fibrosis through cytokine secretion and oxidative stress but also aid resolution via matrix degradation.
- T lymphocytes modulate fibrosis; Th2 responses promote it, while Th1 cytokines may inhibit it.
- NK cells limit fibrosis development and promote resolution by eliminating fibrogenic cells.
Conclusions:
- Mononuclear cells are critical regulators of liver fibrogenesis and resolution.
- Immune cell-mediated mechanisms, including cytokine signaling and direct cell interactions, are central to fibrosis.
- Targeting mononuclear cells presents a viable therapeutic avenue for treating liver fibrosis.
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