Serial cardiac MRI of young and aged mice after permanent coronary ligation found no age-related worsening of post-infarction left ventricular remodeling. Aged animals began with larger chamber volumes, greater diastolic mass, and reduced deformation capacity, while young animals underwent proportionally larger geometric change relative to their own baseline alongside faster histological healing. The results complicate the assumption that advancing age uniformly amplifies adverse ventricular remodeling after myocardial infarction.
Key Points
- Aged mice showed no amplified post-infarction ventricular remodeling versus young mice
- Young hearts changed more proportionally from baseline, yet healed faster histologically
- Aged baseline hearts had larger volumes, greater mass, reduced deformation
Longevity Analysis
Baseline cardiac geometry, not injury response alone, distinguishes the aging heart — meaning the damage attributed to age may partly reflect a structurally altered starting point rather than a compromised capacity to repair. Interpreting post-infarction imaging in absolute terms can obscure this, since proportional change relative to an individual's own pre-event state tells a different story than population comparisons. For anyone tracking cardiovascular function over decades, serial measurement against personal baseline carries more interpretive weight than cross-sectional norms, and protecting chamber geometry and contractile reserve before an event becomes the operative target.
Original published by Wiley Aging Cell, by Heiko Lemcke, Paul Wörner, Antonia Dalmer, Ralf Gäbel, Praveen Vasudevan, Matti Raitza, Moritz Schweins, Tobias Lindner, Hüseyin Ince, Bernd Joachim Krause, Brigitte Vollmar, Robert David, Felix G. Meinel, Cajetan Immanuel Lang .