PMID- 16270277 OWN - NLM STAT- MEDLINE DCOM- 20060216 LR - 20161124 IS - 1613-4125 (Print) IS - 1613-4125 (Linking) VI - 49 IP - 11 DP - 2005 Nov TI - 4-Hydroxynonenal and cholesterol oxidation products in atherosclerosis. PG - 1044-9 AB - 4-Hydroxynonenal (HNE) is by far the most investigated aldehydic end-product of oxidative breakdown of membrane n-6 polyunsaturated fatty acids. Its potential involvement in the pathogenesis of atherosclerosis has been corroborated by its consistent detection in both oxidized LDL and fibrotic plaque in humans. HNE has been shown to activate both macrophage and smooth muscle cells, i.e. the two key cell types in chronic inflammatory processes characterized by excessive fibrogenesis. By signalling to the nucleus, the aldehyde may up-regulate in these cells both expression and synthesis of monocyte chemotactic protein 1 (MCP-1) and transforming growth factor beta1 (TGFbeta1). Oxysterols, namely 27 carbon atoms oxidation products of cholesterol, are found in relatively high amount in LDL from hypercholesterolemic individuals and are consistently detectable in foam cells and necrotic core of human atherosclerotic lesion. As for HNE, the challenge of cells of the macrophage lineage with a mixture of oxysterols like that detectable in hypercholesterolemic individuals led to a marked overexpression of TGFbeta1 and MCP-1. Both HNE and oxysterols then appear to be candidates for a primary role in the progression of the atherosclerotic process. FAU - Leonarduzzi, Gabriella AU - Leonarduzzi G AD - Department of Clinical and Biological Sciences, University of Turin, Turin, Italy. FAU - Chiarpotto, Elena AU - Chiarpotto E FAU - Biasi, Fiorella AU - Biasi F FAU - Poli, Giuseppe AU - Poli G LA - eng PT - Journal Article PT - Review PL - Germany TA - Mol Nutr Food Res JT - Molecular nutrition & food research JID - 101231818 RN - 0 (Aldehydes) RN - 0 (Lipoproteins, LDL) RN - 0 (Sterols) RN - 0 (Transcription Factors) RN - 0 (oxidized low density lipoprotein) RN - 97C5T2UQ7J (Cholesterol) RN - K1CVM13F96 (4-hydroxy-2-nonenal) SB - IM MH - Aldehydes/analysis/chemistry/*metabolism/pharmacology MH - Animals MH - Apoptosis/drug effects MH - Atherosclerosis/*metabolism MH - Cell Nucleus/metabolism MH - Cholesterol/*metabolism MH - Gene Expression/drug effects MH - Humans MH - Inflammation MH - Lipoproteins, LDL/chemistry MH - Macrophage Activation/drug effects MH - Molecular Structure MH - Myocytes, Smooth Muscle/drug effects/physiology MH - Oxidation-Reduction MH - Signal Transduction MH - Sterols/chemistry/pharmacology MH - Transcription Factors/physiology RF - 36 EDAT- 2005/11/05 09:00 MHDA- 2006/02/17 09:00 CRDT- 2005/11/05 09:00 PHST- 2005/11/05 09:00 [pubmed] PHST- 2006/02/17 09:00 [medline] PHST- 2005/11/05 09:00 [entrez] AID - 10.1002/mnfr.200500090 [doi] PST - ppublish SO - Mol Nutr Food Res. 2005 Nov;49(11):1044-9. doi: 10.1002/mnfr.200500090.