Volume 123, Issue 11 pp. 2503-2511
Carcinogenesis

Protective effect of Juzen-taiho-to on hepatocarcinogenesis is mediated through the inhibition of Kupffer cell-induced oxidative stress

Masato Tsuchiya

Masato Tsuchiya

Department of Environmental Sciences and Engineering, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC

First Department of Surgery, University of Yamanashi, Chuo, Yamanashi Prefecture, Japan

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Hiroshi Kono

Corresponding Author

Hiroshi Kono

First Department of Surgery, University of Yamanashi, Chuo, Yamanashi Prefecture, Japan

Fax: +055-273-7390.

First Department of Surgery, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi 409-3898, JapanSearch for more papers by this author
Masanori Matsuda

Masanori Matsuda

First Department of Surgery, University of Yamanashi, Chuo, Yamanashi Prefecture, Japan

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Hideki Fujii

Hideki Fujii

First Department of Surgery, University of Yamanashi, Chuo, Yamanashi Prefecture, Japan

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Ivan Rusyn

Ivan Rusyn

Department of Environmental Sciences and Engineering, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC

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First published: 10 September 2008
Citations: 58

Abstract

Traditional herbal formulations, such as Juzen-taiho-to (TJ-48), are used extensively in medical practice in Asia even though their mechanism of action remains elusive. This study tested a hypothesis that TJ-48 is protective against hepatocarcinogenesis by impeding Kupffer cell-induced oxidative stress. Forty-eight patients were randomly assigned to receive TJ-48 (n = 10), or no supplementation (n = 38) for up to 6 years after surgical treatment for hepatocellular carcinoma (HCC). In addition, to investigate the mechanism of protective action of TJ-48, diethylnitrosamine-containing water was administered for 22 weeks to male mice that were fed regular chow or TJ-48-containing diet. Liver tumor incidence, cell proliferation, number of 8-hydroxy-2′-deoxyguanosine- or F4/80-positive cells, and cytokine expression were evaluated. Although most of the patients experienced recurrence of HCC, a significantly longer intrahepatic recurrence-free survival was observed in the TJ-48 group. In mice, TJ-48 inhibited the development of liver tumors, reduced oxidative DNA damage, inflammatory cell infiltration and cytokine expression. Administration of TJ-48 improves intrahepatic recurrence-free survival after surgical treatment of hepatocellular carcinoma. On the basis of animal experiments, we reason that the protective mechanism of TJ-48 involves inhibition of Kupffer cells. This leads to lower levels of pro-inflammatory cytokines and oxidants in liver which may slow down the process of hepatocarcinogenesis and improves hepatic recurrence-free survival in patients with HCC. © 2008 Wiley-Liss, Inc.

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