AQP1 is also involved in angiogenesis in other tissues such as in heart tissue after myocardial infarction (Ran et al., 2010), in neovascularization of the cirrhotic liver (Huebert et al., 2010; Yokomori et al., 2011), and in tube formation of human retinal vascular endothelial cells (Kaneko et al., 2008). Here, AQP1 is linked to myocardial infarction.