Journal of environmental biology · 2008
Changes in activity of hepatic xenobiotic-metabolizing enzymes of tiger puffer (Takifugu rubripes) exposed to paralytic shellfish poisoning toxins.
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Jeon J K, Lee J S, Shim W J, Aarakawa O, Takatani T, Honda S, Noguchi T
Аннотация
Attempts were made to examine the effect of paralytic shellfish poisoning toxins (PSP) on hepatic xenobiotic-metabolizing enzymes (XMEs) of tiger puffer (Takifugu rubripes). Two groups of nontoxic tiger fish were analyzed, and one group was fed with a PSP-containing diet (PSP group), and another with a PSP-free diet (control group). After 60 days of feeding, they were compared to each other mainly in terms of the activity of XMEs. Both groups did not differ from each other significantly in body weight gain, hepatosomatic index, and condition factor Hepatic level of cytochrome P450 was lower in PSP group than control group. NADPH-cytochrome P450 reductase, NADH-cytochrome b5 reductase, and ethoxyresorufin-O-deethylase (EROD) exhibited a reduced activity in PSP group than control group. Statistical analysis found that the activity or concentration of those enzymes correlated with the hepatic level of PSR with r2=0.497-0.611.