α MSH Blunts Endotoxin-Induced MuRF1 and Atrogin-1 Upregulation in Skeletal Muscle by Modulating NF-κB and AktFoxO1 Pathway
Joint Authors
Martín, Ana Isabel
Gómez-SanMiguel, Ana Belén
Gómez-Moreira, Carolina
Villanúa, María Ángeles
López-Calderón, Asunción
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-09-09
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Alpha melanocyte stimulating hormone (αMSH) has been shown to have anti-inflammatory and anticachectic actions.
We hypothesized that αMSH administration could attenuate the effect of lipopolysaccharide (LPS) on the skeletal muscle through modifications in IGF-Akt-FoxO1 pathway, or/and in serum corticosterone.
Adult male Wistar rats were injected with LPS and/or αMSH.
αMSH administration reduced LPS-induced increase in liver TNFα and serum nitrites as well as NF-κB activation in skeletal muscle.
In contrast, αMSH was not able to prevent the stimulatory effect of LPS on serum concentration of ACTH and corticosterone.
LPS decreased serum levels of IGF-I and IGFBP3 and their expression in the liver (P<0.01).
However IGFBP3 expression in the gastrocnemius was increased by LPS.
Treatment with αMSH prevented the effects of LPS on IGFBP3 but not on IGF-I.
In the gastrocnemius αMSH blocked LPS-induced decrease in pAkt as well as the increase in pNF-κB(p65), FoxO1, atrogin-1, and MuRF1 levels.
These results suggest that αMSH blunts skeletal muscle response to endotoxin by downregulating atrogenes and FoxO1 at least in part by controlling NF-κB activation and Akt signalling, but not through modifications in the secretion of corticosterone or IGF-I.
American Psychological Association (APA)
Martín, Ana Isabel& Gómez-SanMiguel, Ana Belén& Gómez-Moreira, Carolina& Villanúa, María Ángeles& López-Calderón, Asunción. 2014. α MSH Blunts Endotoxin-Induced MuRF1 and Atrogin-1 Upregulation in Skeletal Muscle by Modulating NF-κB and AktFoxO1 Pathway. Mediators of Inflammation،Vol. 2014, no. 2014, pp.1-14.
https://search.emarefa.net/detail/BIM-1043360
Modern Language Association (MLA)
Martín, Ana Isabel…[et al.]. α MSH Blunts Endotoxin-Induced MuRF1 and Atrogin-1 Upregulation in Skeletal Muscle by Modulating NF-κB and AktFoxO1 Pathway. Mediators of Inflammation No. 2014 (2014), pp.1-14.
https://search.emarefa.net/detail/BIM-1043360
American Medical Association (AMA)
Martín, Ana Isabel& Gómez-SanMiguel, Ana Belén& Gómez-Moreira, Carolina& Villanúa, María Ángeles& López-Calderón, Asunción. α MSH Blunts Endotoxin-Induced MuRF1 and Atrogin-1 Upregulation in Skeletal Muscle by Modulating NF-κB and AktFoxO1 Pathway. Mediators of Inflammation. 2014. Vol. 2014, no. 2014, pp.1-14.
https://search.emarefa.net/detail/BIM-1043360
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1043360