Key Points
- To examine the temporal and spatial roles of matrix metalloproteinases (MMPs) and their endogenous inhibitors (TIMPs) across distinct wound repair and ventricular remodeling phases following myocardial infarction.
- Reviewed literature mapping time-dependent MMP and TIMP expression patterns during inflammation, granulation, and scar formation post-myocardial infarction.
- Analyzed wound healing phenotypes and ventricular remodeling alterations reported in genetically modified mouse models.
- Evaluated outcomes, limitations, and mechanistic insights from preclinical and clinical pharmacological MMP inhibition trials.
- MMP and TIMP activities fluctuate in distinct temporal and spatial patterns that dictate extracellular matrix degradation and cardiac tissue remodeling.
- Genetic ablation or overexpression of specific MMPs and TIMPs in mice leads to divergent post-infarction healing responses and altered chamber geometry.
- Broad or poorly timed therapeutic MMP inhibition shows limited efficacy, underscoring the need for targeted intervention during specific reparative phases.
Structured PICO
PPopulationPost-myocardial infarction models (including genetically modified mice) and patients
IInterventionMatrix metalloproteinases (MMPs) and their inhibitors (TIMPs) / therapeutic MMP-inhibition
OOutcomePost-MI wound healing and left ventricular remodeling
The review outlines the critical temporal and spatial roles of matrix metalloproteinases and their inhibitors in wound healing and left ventricular remodeling after myocardial infarction.