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Transitional reactive oxygen species (ROS) production in fertilized egg embryos of devil stinger (Inimicus japonicus), a marine fish species.

Bioscience, biotechnology, and biochemistry

Animals, Aquaculture, Embryo, Nonmammalian, drug effects, metabolism, Embryonic Development, Fishes, embryology, Larva, growth & development, Luminescent Measurements, Reactive Oxygen Species, Tetradecanoylphorbol Acetate, pharmacology, Zygote

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      A time-course analysis of reactive oxygen species (ROS) generation in fertilized eggs of the devil stinger (Inimicus japonicus) from 0 h post-fertilization (hpf) to the early larval stage indicated that the ROS level was highest in the 22 hpf embryo, and declined thereafter. Phorbol myristate acetate (PMA) had no effect on ROS generation by the 22 hpf embryo, whereas PMA significantly increased larval ROS generation, suggesting that the ROS generation mechanisms of the 22 hpf embryo and larva are different at least in terms of PMA-responsiveness. Our results suggest the presence of a specific ROS generation system in devil stinger embryo which can be transitionally activated during embryogenesis.

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