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Pyrrolidine Dithiocarbamate Inhibits Nuclear Factor kappaB and Toll-Like Receptor 4 Expression in Rats with Acute Necrotizing Pancreatitis
Gut and Liver ; : 411-416, 2015.
Artigo em Inglês | WPRIM | ID: wpr-142461
ABSTRACT
BACKGROUND/

AIMS:

To investigate the expression of Toll-like receptor 4 (TLR4) in the pancreases of rats with acute necrotizing pancreatitis (ANP) and any changes upon treatment with pyrrolidine dithiocarbamate (PDTC), an inhibitor of nuclear factor kappaB (NF-kappaB), as well as to determine the relationship between TLR4 and NF-kappaB in ANP pathogenesis.

METHODS:

A total of 72 SD rats were randomly divided into three groups, namely, the control (sham-operation), ANP, and ANP with PDTC pretreatment groups. The PDTC-pretreated group was intraperitoneally injected with PDTC at a dose of 100 mg/kg 1 hour before the induction of ANP. The expressions of TLR4 and NF-kappaB in pancreatic tissue were evaluated by immunohistochemistry and Western blot analysis. The mRNA levels of cytokines tumor necrosis factor alpha, interleukin (IL)-1beta, and IL-6 were measured by reverse transcription polymerase chain reaction.

RESULTS:

The expressions of TLR4, NF-kappaB, and cytokine (NF-kappaB target) genes in the pancreatic tissue increased more significantly in the ANP groups than in the sham-operation group at 3, 6, and 12 hours. Pretreatment with PDTC alleviated the inflammatory activation in the pancreas with ANP, causing a significant decrease in the expressions of TLR4, NF-kappaB, and cytokine genes in the pancreatic tissue.

CONCLUSIONS:

The expressions of TLR4 and NF-kappaB were increased in the pancreases of rats with ANP. PDTC not only inhibits NF-kappaB but also suppresses the expression of TLR4 and downregulates the expression of the related cytokine genes.
Assuntos

Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Pâncreas / Pirrolidinas / Tiocarbamatos / RNA Mensageiro / Distribuição Aleatória / NF-kappa B / Interleucina-6 / Fator de Necrose Tumoral alfa / Ratos Sprague-Dawley / Pancreatite Necrosante Aguda Limite: Animais Idioma: Inglês Revista: Gut and Liver Ano de publicação: 2015 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Pâncreas / Pirrolidinas / Tiocarbamatos / RNA Mensageiro / Distribuição Aleatória / NF-kappa B / Interleucina-6 / Fator de Necrose Tumoral alfa / Ratos Sprague-Dawley / Pancreatite Necrosante Aguda Limite: Animais Idioma: Inglês Revista: Gut and Liver Ano de publicação: 2015 Tipo de documento: Artigo