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ceramide CCN

F Vogl, J Humpolícková, M Amaro, D Koller, H Köfeler, E Zenzmaier, M Hof, A Hermetter
The oxidized phospholipids (oxPl) 1-palmitoyl-2-glutaroyl-sn-glycero-3-phosphocholine (PGPC) and 1-palmitoyl-2-(5-oxovaleroyl)-sn-glycero-3-phosphocholine (POVPC) are cytotoxic components of oxidized LDL (oxLDL). Sustained exposure to oxLDL or isolated oxPl induces apoptotic signaling in vascular cells, which is a hallmark of the late phase of atherosclerosis. Activation of sphingomyelinase, the coordinate formation of ceramide and activation of caspase 3/7 as well as the activation of stress-associated kinases are causally involved in this process...
April 2016: Biochimica et Biophysica Acta
Alessia Frati, Barbara Ricci, Federica Pierucci, Silvia Nistri, Daniele Bani, Elisabetta Meacci
The initiation and progression of heart failure is linked to adverse cardiac remodeling of the extracellular matrix (ECM) during disease mainly through the deregulation of myocardial metalloproteinases (MMPs). Relaxin (RLX), a peptide hormone acting as a physiological cardiac effector, is a key regulator of ECM remodeling in reproductive and nonreproductive tissues. Studying primary cultures of mouse cardiac muscle cells and rat H9c2 cardiomyoblasts, we have obtained evidence for a new signaling pathway activated by RLX to induce ECM remodeling that involves the bioactive sphingolipids sphingosine-1-phosphate (S1P) and ceramide...
January 2015: Molecular Endocrinology
Jonathan D Moore, Nancy J Rothwell, Rosemary M Gibson
1. Caspases and calpains are mediators of apoptotic cell death. The objective of this study was to determine the role of caspases and calpains in primary cerebrocortical neuronal (CCN) death in response to a range of stimuli which reportedly induce neuronal apoptosis. 2. Cell death of primary cultures of rat CCN was induced by staurosporine (STS), C2-ceramide (CER), camptothecin (CMT), hydrogen peroxide (H(2)O(2)) or N-methyl-D-aspartate (NMDA). Caspase and calpain activity were assessed by cleavage of alpha-fodrin or fluorogenic substrates...
February 2002: British Journal of Pharmacology
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