Comparative in vitro study examined the osteogenic potential of interstitial cells of aortic valve obtained from the patients with aortic stenosis and from control recipients of orthotopic heart transplantation with intact aortic valve. The osteogenic inductors augmented mineralization of aortic valve interstitial cells (AVIC) in patients with aortic stenosis in comparison with the control level. Native AVIC culture of aortic stenosis patients demonstrated overexpression of osteopontin gene (OPN) and underexpression of osteoprotegerin gene (OPG) in comparison with control levels. In both groups, AVIC differentiation was associated with overexpression of RUNX2 and SPRY1 genes. In AVIC of aortic stenosis patients, expression of BMP2 gene was significantly greater than the control level. The study revealed an enhanced sensitivity of AVIC to osteogenic inductors in aortic stenosis patients, which indicates probable implication of OPN, OPG, and BMP2 genes in pathogenesis of aortic valve calcification.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 164, No. 9, pp. 356-360, September, 2017
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Zhiduleva, E.V., Irtyuga, O.B., Shishkova, A.A. et al. Cellular Mechanisms of Aortic Valve Calcification. Bull Exp Biol Med 164, 371–375 (2018). https://doi.org/10.1007/s10517-018-3992-2
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DOI: https://doi.org/10.1007/s10517-018-3992-2