Montani Jean‐Pierre - Search Results

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Hyperactive S6K1 mediates oxidative stress and endothelial dysfunction in aging: inhibition by resveratrol

Rajapakse, Angana Gupta ; Yepuri, Gautham ; Carvas, João M. ; Stein, Sokrates ; Matter, Christian M. ; Scerri, Isabelle ; Ruffieux, Jean ; Montani, Jean-Pierre ; Ming, Xiu-Fen ; Yang, Zhihong

In: PLoS ONE, 2011, vol. 6, no. 4, p. e19237

Mammalian target of rapamycin (mTOR)/S6K1 signalling emerges as a critical regulator of aging. Yet, a role of mTOR/S6K1 in aging-associated vascular endothelial dysfunction remains unknown. In this study, we investigated the role of S6K1 in aging-associated endothelial dysfunction and effects of the polyphenol resveratrol on S6K1 in aging endothelial cells. We show here that senescent endothelial...

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Thrombin Stimulates Human Endothelial Arginase Enzymatic Activity via RhoA/ROCK Pathway

Ming, Xiu-Fen ; Barandier, Christine ; Viswambharan, Hema ; Kwak, Brenda R. ; Mach, François ; Mazzolai, Lucia ; Hayoz, Daniel ; Ruffieux, Jean ; Rusconi, Sandro ; Montani, Jean-Pierre ; Yang, Zhihong

In: Circulation, 2004, vol. 110, p. 3708-3714

Background— Arginase competes with endothelial nitric oxide synthase (eNOS) for the substrate L-arginine and decreases NO production. This study investigated regulatory mechanisms of arginase activity in endothelial cells and its role in atherosclerosis. Methods and Results— In human endothelial cells isolated from umbilical veins, thrombin concentration- and time-dependently stimulated...

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