Abstract
The effect of Xiao-Chai-Hu-Tang (Sho-saiko-to, TJ-9), the extract of a mixture of 7 herbs, on hepatic macrophage function was studied using rats. Hepatic macrophages were activated by injection of Corynebacterium parvum or 70% partial hepatectomy. Oral administration of TJ-9 for 3 weeks did not affect the ability of these macrophages to produce superoxide anions evaluated in situ by liver perfusion with nitro blue tetrazolium (NBT) and phorbol myristate acetate (PMA). However, the similar administration of TJ-9 attenuated the blocking of the activation after partial hepatectomy produced by pretreatment with gum arabic, a polysaccharide of high molecular weight. When gum arabic was added to the medium of rat hepatic macrophages cultured with normal rat sera, their ability to produce superoxide anions was reduced in a dose-related manner. This reduction was attenuated by changing the sera to the sera obtained from rats given oral doses of TJ-9 for 3 weeks. These results suggest that TJ-9 may improve the blocked function of hepatic macrophages in activation.
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