Abstract
TJN-101, which is a lignan component isolated from schisandra fruits, inhibits hepatotoxic chemicals-induced liver injuries. In this study, effects of TJN-101 on immunologically induced liver injuries were investigated in vivo and in vitro. When a small dose of lipopolysaccharide was injected into mice previously injected with heat-killed Propionibacterium acnes, most of the animals died with acute hepatic failure which was produced by cytotoxic factors from activated adherent cells, and liver cells were injuried by antibody-dependent cell-mediated cytotoxic (ADCC) reaction or activated macrophages in vitro. TJN-101 reduced the mortality of the mice with acute hepatic failure dose-dependently. Histologically, necrosis was supressed by the treatment of TJN-101, but infiltration of nonspecific inflammatory cells was not. TJN-101 inhibited the isolated liver cell injuries induced by ADCC reaction or activated macrophages in vitro. These results suggest that TJN-101 can be markedly protective against immunological liver injuries.
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