The Anti-Inflammatory Effect of Arginine-Vasopressin on Lipopolysaccharide-Induced IkappaBalpha/Nuclear Factor-kappaB Cascade / 대한구급학회지
The Korean Journal of Critical Care Medicine
;
: 151-157, 2015.
Article
Dans Anglais
| WPRIM
| ID: wpr-770888
ABSTRACT
BACKGROUND:
Arginine vasopressin (AVP) is widely used as a vasopressor agent. Some recent studies have suggested that AVP may exert an immunomodulatory effect. However, the mechanism about the anti-inflammatory effect of AVP is not well known. We investigated the effect of AVP on the ihibitor of kappa B (IkappaBalpha)/nuclear factor-kappa B (NF-kappaB) pathway in RAW 264.7 cells.METHODS:
Cultured RAW 264.7 cells were pretreated with AVP and stimulated with lipopolysaccharide (LPS). To evaluate the effect of AVP on inflammatory cytokines, the concentration of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha) were assessed by an enzyme-linked immunosorbent assay technique. The expression of IkappaBalpha and nuclear translocation of NF-kappaB p65 were measured by Western blotting, and IkappaB kinase (IKK) activity was analyzed by an in vitro immune complex kinase assay. To confirm the AVP effect on IkappaBalpha/NF-kappaB cascade and via V2 receptor, we added tolvaptan (V2 receptor antagonist) after AVP pretreatment.RESULTS:
The increase of IL-6 and TNF-alpha in LPS-stimulated RAW 264.7 cells was suppressed by a treatment with AVP. Pretreatment of AVP inhibited increasing of IKK activity and IkappaBalpha degradation induced by LPS in RAW 264.7 cells. Furthermore, LPS induced and NF-kappaB transcription was inhibited by AVP pretreatment. The observed changes in IKK activity, IkappaBalpha degradation and NF-kappaB transcription by AVP was abolished by tolvaptan treatment.CONCLUSIONS:
Our results suggest that AVP showed anti-inflammatory effect on LPS-induced IkappaBalpha/NF-kappaB cascade in mouse macrophages via V2 receptors.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Phosphotransferases
/
Arginine vasopressine
/
Test ELISA
/
Technique de Western
/
Cytokines
/
Facteur de transcription NF-kappa B
/
Interleukine-6
/
Facteur de nécrose tumorale alpha
/
Récepteurs à la vasopressine
/
I-kappa B Kinase
Limites du sujet:
Animaux
langue:
Anglais
Texte intégral:
The Korean Journal of Critical Care Medicine
Année:
2015
Type:
Article
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