Key result
Bovine aortic valve interstitial cells cultured in osteogenic media exhibited approximately ten times greater alkaline phosphatase activity compared to human aortic valve interstitial cells.
Absolute Event Rate: 81.32% vs 6.85%
p-value: p=<0.0001
Bovine aortic valve interstitial cells exhibit significantly higher ALP activity and calcification compared to human cells, suggesting bovine models may not accurately reflect human aortic valve stenosis pathogenesis.
Caution against overinterpreting bovine aortic valve cell studies; leaves open whether these models accurately represent human valve stenosis pathogenesis.
Aortic valve stenosis (AVS) is one of the most common heart valve diseases, and surgical intervention remains the only viable treatment option. Thus, there is a need for novel and innovative treatments. One approach is to study the biological pathogenesis of this disease in hopes of finding new targets for drug therapy. Although this may be a viable option, it faces some methodological concerns. Many studies attempted to address the underlying mechanisms of this disease using aortic valves from bovine models. Although these may be viable models in certain diseased conditions, this may not be the case when studying calcification in AVS. Thus, the aim of our study was to assess the significance of drawing conclusions from bovine models to humans in the context of AVS, and investigate the role of alkaline phosphatase (ALP), an enzyme that increases calcium mineralization and deposition in aortic valve calcification. We also wanted to identify any differences in calcification when using different osteogenic media.
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Khan et al. (2017) studied Aortic valve stenosis (calcification). Osteogenic media (OSM) vs. Dulbecco's Modified Eagle's Medium (DMEM) was evaluated on Alkaline phosphatase (ALP) activity in BAVICs vs calcified HAVICs cultured in OSM (p=<0.0001). Bovine aortic valve interstitial cells cultured in osteogenic media exhibited approximately ten times greater alkaline phosphatase activity compared to human aortic valve interstitial cells.
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