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Protein Sulfhydryl Group Oxidation and Mixed-Disulfide Modifications in Stable and Unstable Human Carotid Plaques
Joint Authors
Zinellu, Angelo
Nieddu, Gabriele
Formato, Marilena
Zinellu, Elisabetta
Carru, Ciriaco
Spirito, Rita
De Muro, Pierina
Guarino, Anna
Lepedda, Antonio Junior
Source
Oxidative Medicine and Cellular Longevity
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-02-04
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Biology
Abstract EN
Objectives.
Oxidative stress has been implicated in the outcome of atherosclerotic plaques.
However, at present, no data are available neither on the degree of plaque protein sulfhydryl groups oxidation nor on its relationship with plaque vulnerability.
We investigated the entity of protein-SH oxidative modifications, focusing on low molecular weight thiols adduction, in human carotid plaque extracts in relation to plaque stability/instability.
Methods.
Plaque stability/instability was histologically assessed.
The extent of protein-SH oxidative modifications was established by a differential proteomic approach on fluorescein-5-maleimide-labeled plaque extracts and corresponding plasma samples from 48 endarterectomized patients.
The analysis on protein thiolation was performed by capillary zone electrophoresis.
Results.
We observed a higher protein-SH oxidation of both plasma-derived and topically expressed proteins in unstable plaques, partly due to higher levels of S-thiolation.
Conversely, in plasma, none of the investigated parameters discriminated among patients with stable and unstable plaques.
Conclusions.
Our results suggest the presence of a more pronounced oxidative environment in unstable plaques.
Identifying specific oxidative modifications and understanding their effects on protein function could provide further insight into the relevance of oxidative stress in atherosclerosis.
American Psychological Association (APA)
Lepedda, Antonio Junior& Zinellu, Angelo& Nieddu, Gabriele& Zinellu, Elisabetta& Carru, Ciriaco& Spirito, Rita…[et al.]. 2013. Protein Sulfhydryl Group Oxidation and Mixed-Disulfide Modifications in Stable and Unstable Human Carotid Plaques. Oxidative Medicine and Cellular Longevity،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-469342
Modern Language Association (MLA)
Lepedda, Antonio Junior…[et al.]. Protein Sulfhydryl Group Oxidation and Mixed-Disulfide Modifications in Stable and Unstable Human Carotid Plaques. Oxidative Medicine and Cellular Longevity No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-469342
American Medical Association (AMA)
Lepedda, Antonio Junior& Zinellu, Angelo& Nieddu, Gabriele& Zinellu, Elisabetta& Carru, Ciriaco& Spirito, Rita…[et al.]. Protein Sulfhydryl Group Oxidation and Mixed-Disulfide Modifications in Stable and Unstable Human Carotid Plaques. Oxidative Medicine and Cellular Longevity. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-469342
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-469342