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Cellular events associated with inflammatory angiogenesis in the mouse cornea
C Sunderkötter1, W Beil, J Roth
1Institute of Experimental Dermatology, University of Münster, Federal Republic of Germany.
The American Journal of Pathology
|April 1, 1991
Summary
Angiogenesis, or new blood vessel growth, is preceded by early granulocyte and inflammatory monocyte influx, not mature macrophages or T lymphocytes. This study identifies key early cellular events in non-specific inflammation-induced angiogenesis.
Area of Science:
- Immunology
- Vascular Biology
- Ophthalmology
Background:
- Angiogenesis is crucial for development and disease.
- Understanding the cellular precursors of angiogenesis is vital for therapeutic targeting.
- Nonspecific inflammation can induce angiogenesis, but the initiating cell types are not fully defined.
Purpose of the Study:
- To establish a murine corneal angiogenesis model.
- To immunohistochemically identify the cellular events preceding neovascularization.
- To determine the role of specific immune cell types in early angiogenesis.
Main Methods:
- Chemical cauterization of the murine cornea to induce neovascularization.
- Immunohistochemical analysis using antibodies on corneal sections.
- Histochemical staining for mast cells.
- Detection of infiltrating cells using an antibody against MRP14.
Main Results:
- Neovascularization was observed within 36 hours post-cauterization.
- Early infiltrating cells (from 3 hours) were identified as granulocytes and inflammatory monocytes (MRP14+).
- Mature macrophages, T lymphocytes, and mast cells were not found in the early infiltrate preceding blood vessel ingrowth.
Conclusions:
- The induction of angiogenesis in nonspecific inflammation is associated with the early influx of myelomonocytic cells.
- Mature macrophages, T lymphocytes, and mast cells do not appear to initiate this angiogenic process.
- Immunohistochemical analysis of cauterized corneas is a valuable model for studying angiogenesis.