An anti-inflammatory role of A20 zinc finger protein during trauma combined with endotoxin challenge.
J Surg Res
; 185(2): 717-25, 2013 Dec.
Article
en En
| MEDLINE
| ID: mdl-24055365
ABSTRACT
OBJECTIVE:
To investigate the anti-inflammatory role of A20 zinc finger protein during trauma combined with bacterial endotoxin challenge and explore the molecular mechanism underlying this process.METHODS:
Traumatic bone impact injury was induced in the hind limbs of mice. One hour after injury, mice were challenged with purified gram-negative bacterial endotoxins, lipopolysaccharides (LPSs), by tail vein injection. Effects on A20 messenger RNA and protein expressions were assessed by reverse transcription-polymerase chain reaction and Western blotting, respectively. A20 recombinant adenoviruses, full-length (pAdA20 1-775) and N-terminal mutant (pAdA20 1-367), were constructed and used to infect RAW264.7 macrophage cells or mice. Responses in the tumor necrosis factor α (TNF-α)-nuclear factor κB (NF-κB) signaling pathway were evaluated by enzyme-linked immunosorbent assay (for TNF-α) and electrophoretic mobility shift assay (for NF-κB).RESULTS:
Trauma combined with LPS challenge and LPS challenge alone dramatically promoted A20 expression in mouse liver tissues. LPS challenge increased A20 messenger RNA levels appreciably in RAW264.7 cells within 1 h. Full-length A20 recombinant adenoviruses (pAdA20 1-775) suppressed NF-κB activity and TNF-α expression and protected against liver damage and animal death otherwise induced by trauma combined with LPS challenge.CONCLUSIONS:
A20 zinc finger protein plays an anti-inflammatory role and protects against liver injury associated with trauma combined with LPS challenge.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Heridas y Lesiones
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Huesos
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Proteínas Nucleares
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Endotoxemia
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Ubiquitina-Proteína Ligasas
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Péptidos y Proteínas de Señalización Intracelular
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Proteínas de Unión al ADN
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Enfermedad Hepática Inducida por Sustancias y Drogas
Límite:
Animals
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Humans
Idioma:
En
Revista:
J Surg Res
Año:
2013
Tipo del documento:
Article
País de afiliación:
China