Basic Research
Copyright ©2008 The WJG Press and Baishideng. All rights reserved.
World J Gastroenterol. Mar 28, 2008; 14(12): 1851-1857
Published online Mar 28, 2008. doi: 10.3748/wjg.14.1851
Effect of JIANPI HUOXUE decoction on inflammatory cytokine secretion pathway in rat liver with lipopolysaccharide challenge
Jing-Hua Peng, Yi-Yang Hu, Yang Cheng, Chong Han, Li-Li Xu, Qin Feng, Shao-Dong Chen, Qing Tao, Hong-Shan Li, Xue-Mei Li
Jing-Hua Peng, Yi-Yang Hu, Yang Cheng, Chong Han, Li-Li Xu, Qin Feng, Shao-Dong Chen, Qing Tao, Hong-Shan Li, Xue-Mei Li, Institute of Liver Diseases, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
Author contributions: Hu YY designed the research; Peng JH, Han C, Xu LL, Chen SD, Tao Q, Li HS and Li XM performed the research; Feng Q provided new reagents; Peng JH analyzed data; Peng JH and Yang C wrote the paper.
Correspondence to: Professor Yi-Yang Hu, Institute of Liver Disease, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, No. 528, Zhangheng Road, Shanghai 201203, China.
Telephone: +86-21-51328500
Fax: +86-21-51328500
Received: October 6, 2007
Revised: January 15, 2008
Published online: March 28, 2008

AIM: To evaluate the effect of Chinese traditional medicinal prescription, JIANPI HUOXUE decoction (JHD) on cytokine secretion pathway in rat liver induced by lipopolysaccharide (LPS).

METHODS: Twenty-four male SD rats were divided into normal group (n = 4), model group (n = 10) and JHD group (n = 10) randomly. Rats in model group and JHD group were administrated with normal saline or JHD via gastrogavage respectively twice a day for 3 d. One hour after the last administration, rats were injected with LPS via tail vein, 50 &mgr;g/kg. Simultaneously, rats in normal group were injected with equivalent normal saline. After LPS stimulation for 1.5 h, serum and liver tissue were collected. Pathological change of liver tissues was observed through hematoxylin-eosin (H.E.) staining. Tumor necrosis factor alpha (TNF-α) in serum were assayed by enzyme linked immunosorbent assay (ELISA). The protein expression of TNF-α, phosphorylated inhibit-κB (p-IκB) and CD68 in liver were assayed by Western blot. The distribution of CD68 protein in liver was observed through immunohistochemical staining. The mRNA expression of TNF-α, interleukin-6 (IL-6), CD14, toll-like receptor 2 (TLR2) and TLR4 in liver were assayed by real-time RT-PCR.

RESULTS: Predominant microvesicular change, hepatocyte tumefaction and cytoplasm dilution were observed in liver tissues after LPS administration as well as obvious CD68 positive staining in hepatic sinusoidal. After LPS stimulation, serum TNF-α (31.35 ± 6.06 vs 12 225.40 ± 9007.03, P < 0.05), protein expression of CD68 (1.13 ± 0.49 vs 3.36 ± 1.69, P < 0.05), p-IκB (0.01 ± 0.01 vs 2.07 ± 0.83, P < 0.01) and TNF-α (0.27 ± 0.13 vs 1.29 ± 0.37, P < 0.01) in liver and mRNA expression of TNF-α (1.96 ± 2.23 vs 21.45 ± 6.00, P < 0.01), IL-6 (4.80 ± 6.42 vs 193.50 ± 36.36, P < 0.01) and TLR2 (1.44 ± 0.62 vs 4.16 ± 0.08, P < 0.01) in liver were also increased significantly. These pathological changes were all improved in JHD group. On the other hand, TLR4 mRNA (1.22 ± 0.30 vs 0.50 ± 0.15, P < 0.05) was down-regulated and CD14 mRNA increased but not significantly after LPS stimulation.

CONCLUSION: JHD can inhibit cytokine secretion pathway induced by LPS in rat liver, which is probably associated with its regulation on CD68, p-IκB and endotoxin receptor TLR2.

Keywords: JIANPI HUOXUE decoction, Lipopolysaccharide, Kupffer cell, Cytokine, Endotoxin receptor