Abstract
Liver hydrolysate (LH) is used as a pharmaceutical agent in Japan, to enhance liver function. However, the effects of LH on sickness behavior are unknown. This study investigated the effect of LH on sickness behaviors, such as concanavalin A (ConA)-induced reduction of locomotor activity. ConA treatment significantly decreased locomotor activity. The striatal tyrosine hydroxylase (TH) levels were also significantly decreased following ConA treatment. The decreased locomotor activity and TH levels were significantly reversed by LH treatment. LH may prove beneficial for preventing sickness behavior following ConA treatment, at least in part, by activating TH in the striatum.
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