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International Journal of Morphology

On-line version ISSN 0717-9502

Abstract

DE LA FUENTE E, Raúl et al. Effect of Aliskiren on Angiogenesis in Chick Embryo Chorioallantoic Membrane (CAM) Assay. Int. J. Morphol. [online]. 2016, vol.34, n.4, pp.1191-1196. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022016000400002.

Angiogenesis is the formation of new blood vessels from pre-existing ones. Antiangiogenic effect of angiotensin receptor blockers has been reported, however, the relationship between direct renin inhibitors and angiogenesis has not been well described. To assess the antiangiogenic effect of aliskiren, a direct renin inhibitor, on chick embryo chorioallantoic membrane (CAM) assay. Aliskiren and enalapril were instilled in different concentrations and compared. In serial histological sections, the number of blood vessels per 9000 µm2 area under observation through optical microscope using maximum zoom, was registered. Statistical analysis using Anova and Tukey test in order to show possible differences, was performed. Receptors treated with aliskiren presented lower vascular density, which was statistically significant when a higher concentration was administered. High concentrations of aliskiren have an antiangiogenic effect on CAM assay. This finding means further studies are needed, because of the usefulness direct renin inhibitors could have. These results, also, might enhance the possibility of using aliskiren for regulating angiogenesis in the context of non-transmissible chronic diseases.

Keywords : Angiogenesis; Chorioallantoic membrane; Aliskiren; Enalapril.

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