alterations in the plasma thyroid and cortisol hormones in yellowfin sea bream, acanthopagrus latus, following exposure to benzo(α)pyrene

the goal of this research is to study the effect of benzo-alpha-pyrene (bαp) as a pollutant on the plasma levels of cortisol, thyroxin (t4), and triiodothyronine (t3) hormones, and the t3/t4 ratio in the yellowfin sea bream, acanthopagrus latus. the bαp (50 mg kg-1) in vegetable oil was peritoneally injected. blood samples were obtained from the treated and control groups after 3 and 72 hr, respectively. the amounts of cortisol, t3, and t4 were measured using the elisa techniques. the results showed that during both the 3 and 72 hr bαp exposures, the t4 hormone levels significantly decreased, although the cortisol levels increased (p