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Université de Fribourg

Ticagrelor, but not clopidogrel, reduces arterial thrombosis via endothelial tissue factor suppression

Reiner, Martin F. ; Akhmedov, Alexander ; Stivala, Simona ; Keller, Stephan ; Gaul, Daniel S. ; Bonetti, Nicole R. ; Savarese, Gianluigi ; Glanzmann, Martina ; Zhu, Cuicui ; Ruf, Wolfram ; Yang, Zhihong ; Matter, Christian M. ; Lüscher, Thomas F. ; Camici, Giovanni G. ; Beer, Juerg H.

In: Cardiovascular Research, 2017, vol. 113, no. 1, p. 61–69

The P2Y12 antagonist ticagrelor reduces mortality in patients with acute coronary syndrome (ACS), compared with clopidogrel, and the mechanisms underlying this effect are not clearly understood. Arterial thrombosis is the key event in ACS; however, direct vascular effects of either ticagrelor or clopidogrel with focus on arterial thrombosis and its key trigger tissue factor have not been...

Université de Fribourg

Identification of a SIRT1 Mutation in a Family with Type 1 Diabetes

Biason-Lauber, Anna ; Böni-Schnetzler, Marianne ; Hubbard, Basil P. ; Bouzakri, Karim ; Brunner, Andrea ; Cavelti-Weder, Claudia ; Keller, Cornelia ; Meyer-Böni, Monika ; Meier, Daniel T. ; Brorsson, Caroline ; Timper, Katharina ; Leibowitz, Gil ; Patrignani, Andrea ; Bruggmann, Remy ; Boily, Gino ; Zulewski, Henryk ; Geier, Andreas ; Cermak, Jennifer M. ; Elliott, Peter ; Ellis, James L. ; Westphal, Christoph ; Knobel, Urs ; Eloranta, Jyrki J. ; Kerr-Conte, Julie ; Pattou, François ; Konrad, Daniel ; Matter, Christian M. ; Fontana, Adriano ; Rogler, Gerhard ; Schlapbach, Ralph ; Regairaz, Camille ; Carballido, José M. ; Glaser, Benjamin ; McBurney, Michael W. ; Pociot, Flemming ; Sinclair, David A. ; Donath, Marc Y.

In: Cell Metabolism, 2013, vol. 17, no. 3, p. 448-455

Type 1 diabetes is caused by autoimmune-mediated β cell destruction leading to insulin deficiency. The histone deacetylase SIRT1 plays an essential role in modulating several age-related diseases. Here we describe a family carrying a mutation in the SIRT1 gene, in which all five affected members developed an autoimmune disorder: four developed type 1 diabetes, and one developed ulcerative...

Université de Fribourg

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...

Université de Fribourg

Dimethyl sulfoxide inhibits tissue factor expression, thrombus formation, and vascular smooth muscle cell activation: a potential treatment strategy for drug-eluting stents

Camici, Giovanni G. ; Steffel, Jan ; Akhmedov, Alexander ; Schafer, Nicola ; Baldinger, Jeannette ; Schulz, Urs ; Shojaati, Kushiar ; Matter, Christian M. ; Yang, Zhihong ; Lüscher, Thomas F. ; Tanner, Felix C.

In: Circulation, 2006, vol. 114, no. 14, p. 1512-1521

Background— Subacute stent thrombosis is a major clinical concern, and the search for new molecules to cover stents remains important. Dimethyl sulfoxide (DMSO) is used for preservation of hematopoietic progenitor cells and is infused into patients undergoing bone marrow transplantation. Despite its intravenous application, the impact of DMSO on vascular cells has not been assessed....