Display Settings:

Format

Send to:

Choose Destination
Int J Neuropsychopharmacol. 2011 Aug;14(7):899-911. doi: 10.1017/S1461145711000046. Epub 2011 Feb 8.

Plasma proteomic alterations in non-human primates and humans after chronic alcohol self-administration.

Author information

  • 1Department of Pharmacology, Penn State College of Medicine, Hershey, PA 17033-0850, USA.

Abstract

Objective diagnostics of excessive alcohol use are valuable tools in the identification and monitoring of subjects with alcohol use disorders. A number of potential biomarkers of alcohol intake have been proposed, but none have reached widespread clinical usage, often due to limited diagnostic sensitivity and specificity. In order to identify novel potential biomarkers, we performed proteomic biomarker target discovery in plasma samples from non-human primates that chronically self-administer high levels of ethanol. Two-dimensional difference in-gel electrophoresis (2D-DIGE) was used to quantify plasma proteins from within-subject samples collected before exposure to ethanol and after 3 months of excessive ethanol self-administration. Highly abundant plasma proteins were depleted from plasma samples to increase proteomic coverage. Altered plasma levels of serum amyloid A4 (SAA4), retinol-binding protein, inter-alpha inhibitor H4, clusterin, and fibronectin, identified by 2D-DIGE analysis, were confirmed in unmanipulated, whole plasma from these animals by immunoblotting. Examination of these target plasma proteins in human subjects with excessive alcohol consumption (and control subjects) revealed increased levels of SAA4 and clusterin and decreased levels of fibronectin compared to controls. These proteins not only serve as targets for further development as biomarker candidates or components of biomarker panels, but also add to the growing understanding of dysregulated immune function and lipoprotein metabolism with chronic, excessive alcohol consumption.

PMID:
21303580
[PubMed - indexed for MEDLINE]
PMCID:
PMC3107900
Free PMC Article

Images from this publication.See all images (5)Free text

Fig 1
Fig 2
Fig 3
Fig 4
Fig 5
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for Cambridge University Press Icon for PubMed Central
    Loading ...
    Write to the Help Desk