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] |