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To evaluate the effects of ECM composition on cardiac aging, we developed a mathematical model to predict LV dimension and wall stiffness changes in aging mice by integrating mechanical laws and our experimental results. We measured LV dimension, wall thickness, LV mass, and collagen content for wild type (WT) C57\/BL6J mice of ages ranging from 7.3 months to those of 34.0 months. The model was established using the thick wall theory and stretch-induced tissue growth to an isotropic and homogeneous elastic composite with mixed constituents. The initial conditions of the simulation were set based on the data from the young mice. Matlab simulations of this mathematical model demonstrated that the model captured the major features of LV remodeling with age and closely approximated experimental results. Specifically, the temporal progression of the LV interior and exterior dimensions demonstrated the same trend and order-of-magnitude change as our experimental results. In conclusion, we present here a validated mathematical model of cardiac aging that applies the thick-wall theory and stretch-induced tissue growth to LV remodeling with age.<\/jats:p>","DOI":"10.1186\/1752-0509-6-s3-s10","type":"journal-article","created":{"date-parts":[[2012,12,17]],"date-time":"2012-12-17T13:14:53Z","timestamp":1355750093000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Mathematical modeling of left ventricular dimensional changes in mice during aging"],"prefix":"10.1186","volume":"6","author":[{"given":"Tianyi","family":"Yang","sequence":"first","affiliation":[]},{"given":"Ying Ann","family":"Chiao","sequence":"additional","affiliation":[]},{"given":"Yunji","family":"Wang","sequence":"additional","affiliation":[]},{"given":"Andrew","family":"Voorhees","sequence":"additional","affiliation":[]},{"given":"Hai-Chao","family":"Han","sequence":"additional","affiliation":[]},{"given":"Merry L","family":"Lindsey","sequence":"additional","affiliation":[]},{"given":"Yu-Fang","family":"Jin","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2012,12,17]]},"reference":[{"issue":"4","key":"995_CR1","doi-asserted-by":"publisher","first-page":"e18","DOI":"10.1161\/CIR.0b013e3182009701","volume":"123","author":"VL Roger","year":"2011","unstructured":"Roger VL, et al: Heart disease and stroke statistics--2011 update. 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