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October 2021

Cancer Invest. 1998 ; 16(3): 166-9.

Anticarcinogenic effects of shikaron, a preparation of eight Chinese herbs in mice treated with a carcinogen, N-butyl-N'-butanolnitrosoamine.

Kurashige S, Jin R, Akuzawa Y, Endo F.

Department of Medical Technology, College of Medical Care and Technology, Gunma University, Japan.

We studied the effects of Shikaron, which is composed of 8 Chinese herb extracts, on carcinogenesis and the cytotoxic activity and cytokine production of lymphocytes in mice treated with a carcinogen, N-butyl-N'-butanolnitrosoamine (BBN). We found a significantly lower incidence of urinary bladder carcinoma in mice treated with BBN plus Shikaron 200 mg/kg/day (5 of 20 mice, 25%), than in mice treated with BBN alone (16 of 20 mice, 80%). Shikaron protected the cytotoxic activity of lymphocytes against YAC-1 cells from suppression by BBN. Cytotoxic activity against P-815 cells significantly increased in mice treated with BBN plus Shikaron, as compared with normal mice and BBN-treated mice. Shikaron also protected production of interleukin-2 and interferon-gamma by lymphocytes from suppression by BBN. These findings strongly suggest that Shikaron exerted an anticarcinogenic effect in carcinogen-treated mice through activation of NK and LAK cells and cytokine production by T lymphocytes.


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