Table 3:
The cellular and biochemical events associated with reparative, proliferative and maturation phases of the remodeling of IZ following MI.
| Reparative and proliferative phase | ||
|---|---|---|
| Biochemical events |
Pathological effects | References |
| Suppression of inflammation | Decrease in pro-inflammatory cytokines, hypoxia, acidosis and neutrophil density and increase in anti-inflammatory cytokines, M2 macrophages, lipid-derived pro-resolving mediators and pro-fibrosis mediators | [11] |
| Fibroblast activation and scarring | Transdifferentiation of cardiac fibroblasts to the synthetic phenotype called myofibroblast | [22] |
| ECM remodeling |
Formation of mechanically weak provisional matrix comprising fibrin and fibronectin is formed at IZ which matures by collagen deposition | [23] |
| Maturation phase | ||
| Biochemical events |
Pathological effects | References |
| Scar maturation | ECM cross linking, deactivation of reparative cells, withdrawal of fibrogenic growth factors, clearance of matricellular proteins, and reduction in ECM synthesis and myofibroblast density | [24] |