Effects of Ginkgo biloba extract on expressions of IL-1beta, TNF-alpha, and IL-10 in U937 foam cells / 药学学报
Acta Pharmaceutica Sinica
;
(12): 930-934, 2007.
Artigo
em Inglês
| WPRIM
| ID: wpr-268552
ABSTRACT
This study is to investigate the protein and mRNA expressions of pro-inflammatory and anti-inflammatory cytokines in U937 foam cells and effects of Ginkgo biloba extract (GbE) on the cytokines. U937 cells were cultured with different concentrations of GbE (0.1, 1, and 10 microg x L(-1)), and stimulated by 100 mg x L(-1) oxidized low density lipoprotein (ox-LDL) for 24 h. The expressions of interleukin-1beta (IL-1beta), tumor necrosis factor-alpha (TNF-alpha) and interleukin-10 (IL-10) in culture solution were detected by enzyme-linked immunosorbant assay (ELISA) and reverse transcriptase polymerase chain reaction (RT-PCR). The results showed that incubated with 100 mg x L(-1) ox-LDL for 24 h, the U937 cells became foam cells, the protein or mRNA expressions of IL-1beta, TNF-alpha, IL-10, and its receptor IL-10R in U937 foam cells were higher markedly than those in normal U937 cells. When the cells were pretreated with GbE (0.1, 1, and 10 microg x L(-1)), the increases of IL-1beta and TNF-alpha in U937 foam cells were remarkably inhibited, but IL-10 expression increased greatly. Especially when cells were pretreated with 10 microg x L(-1) GbE, the protein and mRNA expressions of IL-1beta and TNF-alpha were markedly lower than those in U937 foam cells. The protein expression of IL-10 and mRNA expressions of IL-10 and its receptor IL-10R were markedly higher than those in U937 foam cells. GbE inhibited production of pro-inflammatory cytokines IL-1beta and TNF-alpha, but up-regulated the production of anti-inflammatory cytokine IL-10 and its receptor IL-10R in U937 foam cells, which might be related with its anti-atherosclerotic actions.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Farmacologia
/
Plantas Medicinais
/
RNA Mensageiro
/
Medicamentos de Ervas Chinesas
/
Química
/
Fator de Necrose Tumoral alfa
/
Interleucina-10
/
Células U937
/
Ginkgo biloba
/
Interleucina-1beta
Limite:
Humanos
Idioma:
Inglês
Revista:
Acta Pharmaceutica Sinica
Ano de publicação:
2007
Tipo de documento:
Artigo
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