Andrographolide inhibits expression of TNF-α and IL-12 in activated macrophages
10.3724/SP.J.1008.2011.00717
- Author:
Lin-Hua QIN
1
Author Information
1. Department of Gastroenterology
- Publication Type:Journal Article
- Keywords:
Andrographis paniculata;
Andrographolide;
Interleukin-12;
Tumor necrosis factor-α
- From:
Academic Journal of Second Military Medical University
2011;32(7):717-720
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To observe the effect of andrographolide on the expression of TNF-α and IL-12 in activated macrophages. Methods: The peritoneal macrophages were harvested from mice intraperitoneally injected with thioglycollate. The macrophages were pretreated with andrographolide and then stimulated with lipopolysaccharide. RT-PCR was used to examine the expression of TNF-α, IL-12a, and IL-12b in the macrophages, and ELISA was used to measure the protein levels of TNF-α and IL-12 in the supernatant. Results: Andrographolide inhibited the mRNA levels of TNF-α, IL-12a, and IL-12b, and the protein levels of TNF-α and IL-12 in activated macrophages, and the inhibition increased with the increase of andrographolide concentration. Andrographolide at 12 μg/ml (P<0.05) and 25 μg/ml (P<0.01) significantly inhibited TNF-α mRNA level in macrophages; andrographolide at 1 μg/ml (P<0.05) and 12 μg/ml (P< 0.01) significantly inhibited TNF-α protein level (P<0.01). Andrographolide at 1 μg/ml significantly inhibited IL-12b mRNA level and at 12 μg/ml significantly inhibited IL-12a mRNA level (P<0.01); and andrographolide at 1 μg/ml also significantly inhibited IL-12 protein level (P<0.01). Conclusion: Andrographolide can inhibit both the expression of TNF-α and IL-12 in activated macrophages.
