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Expression of Egr1 and p53 in human carotid plaques and apoptosis induced by 7-oxysterol or p53.
Linköping University, Department of Clinical and Experimental Medicine, Experimental Pathology. Linköping University, Faculty of Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Experimental Pathology. Linköping University, Faculty of Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Experimental Pathology. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Heart and Medicine Center, Occupational and Environmental Medicine Center.
Linköping University, Department of Clinical and Experimental Medicine, Experimental Pathology. Linköping University, Faculty of Health Sciences.
2013 (English)In: Experimental and Toxicological Pathology, ISSN 0940-2993, E-ISSN 1618-1433, Vol. 65, no 5, 677-682 p.Article in journal (Refereed) Published
Abstract [en]

Egr-1 and p53 are involved in pathology of both atherosclerosis and cancer. However, it is unknown whether p53 and Egr1 are interactively involved in apoptosis in atherosclerosis. We found that in human carotid plaques, the expression of p53 was inversely correlated with Egr1. In U937 cells, 7 beta-hydroxycholesterol and 7-ketocholesterol induced production of reactive oxygen species (ROS), transient up-regulation of Egr1 followed by late induction of p53 and apoptosis. Cells with nuclear fragmentation induced by 7-oxysterol or p53 showed increased levels of p53, but decreased levels of Egr1. In conclusion, ROS induced by 7-oxysterols may function as an early initiator of Egr1 expression. The late induced p53 by 7-oxysterols contributes to apoptotic cell death and is linked to the reduction of Egr1 levels, which resembles the differential expression of p53 and Egr1 in human atheroma progression.

Place, publisher, year, edition, pages
2013. Vol. 65, no 5, 677-682 p.
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Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-90234DOI: 10.1016/j.etp.2012.08.002ISI: 000322292700028PubMedID: 22999639OAI: oai:DiVA.org:liu-90234DiVA: diva2:612461
Available from: 2013-03-21 Created: 2013-03-21 Last updated: 2017-12-06

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Yuan, Xi-MingLi, Wei

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