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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Journal of Molecular...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Journal of Molecular Medicine
Article . 2009 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
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In vivo role(s) of the iron regulatory proteins (IRP) 1 and 2 in aseptic local inflammation

Authors: Hermann Josef Gröne; Lydie Viatte; Matthias W. Hentze; Bruno Galy;

In vivo role(s) of the iron regulatory proteins (IRP) 1 and 2 in aseptic local inflammation

Abstract

The maintenance of iron homeostasis is critical as both iron deficiency and iron excess are deleterious. In mammals, iron homeostasis is regulated systemically by the iron-hormone hepcidin, an acute-phase protein secreted by the liver which inhibits iron absorption and recycling. Cellularly, the interaction of iron regulatory proteins (IRP) 1 and 2 with iron-responsive elements controls the expression of target mRNAs encoding proteins of iron acquisition, storage, utilization, and export. These processes critically affect iron levels, which in turn impact on numerous aspects of inflammation. To explore the role of IRP1 and IRP2 in inflammation, IRP-deficient mice, i.e., mice with total and constitutive deficiency of either IRP, were subjected to acute aseptic local inflammation. Turpentine oil injection increases the expression of acute phase proteins in the liver and interleukin 6 levels in the serum of control mice. Both IRP-deficient mouse models mount the same responses, indicating that the treatment was efficient in all animals and that the acute phase response does not require expression of both IRPs. As expected, turpentine oil treatment enhances hepcidin mRNA expression in the liver of wild-type mice, associated with decreased serum iron levels. Importantly, Irp1 (-/-) and Irp2 (-/-) animals, respectively, display quantitatively similar hepcidin mRNA induction and the appropriate reduction of the serum iron values. Our data indicate that the response of Irp1 (-/-) and Irp2 (-/-) mice to acute local inflammation is largely preserved.

Keywords

Inflammation, Mice, Knockout, Turpentine, Iron, Mice, Gene Expression Regulation, Hepcidins, Animals, Iron Regulatory Protein 1, RNA, Messenger, Acute-Phase Reaction, Iron Regulatory Protein 2, Acute-Phase Proteins, Antimicrobial Cationic Peptides

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
10
Average
Average
Top 10%
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