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Arginase‐II induces vascular smooth muscle cell senescence and apoptosis through p66Shc and p53 independently of its l‐arginine ureahydrolase activity: implications for atherosclerotic plaque vulnerability

Xiong, Yuyan ; Yu, Yi ; Montani, Jean‐Pierre ; Yang, Zhihong ; Ming, Xiu‐Fen

In: Journal of the American Heart Association, 2013, vol. 2, no. 4, p. e000096

Background Vascular smooth muscle cell (VSMC) senescence and apoptosis are involved in atherosclerotic plaque vulnerability. Arginase‐II (Arg‐II) has been shown to promote vascular dysfunction and plaque vulnerability phenotypes in mice through uncoupling of endothelial nitric oxide synthase and activation of macrophage inflammation. The function of Arg‐II in VSMCs with respect to plaque...

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Different vascular smooth muscle cell apoptosis in the human internal mammary artery and the saphenous vein: implications for bypass graft disease

Frischknecht, Karin ; Greutert, Helen ; Weisshaupt, Christian ; Kaspar, Mathias ; Yang, Zhihong ; Lüscher, Thomas F. ; Carrel, Thierry P. ; Tanner, Felix C.

In: Journal of Vascular Research, 2006, vol. 43, no. 4, p. 338-346

The remarkable patency of internal mammary artery (MA) grafts compared to saphenous vein (SV) grafts has been related to different biological properties of the two blood vessels. We examined whether proliferation and apoptosis of vascular smooth muscle cells (VSMC) from human coronary artery bypass vessels differ according to patency rates. Methods and Results: Proliferation rates to serum...

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