Antioxidant defense of the midgut epithelium by the peritrophic envelope in caterpillars.

@article{Barbehenn2004AntioxidantDO,
  title={Antioxidant defense of the midgut epithelium by the peritrophic envelope in caterpillars.},
  author={Raymond V Barbehenn and Jasmine N Stannard},
  journal={Journal of insect physiology},
  year={2004},
  volume={50 9},
  pages={
          783-90
        }
}
The peritrophic envelope (PE) is an extracellular matrix that is secreted by the midgut epithelium in most arthropods. In addition to protecting the midgut epithelium from abrasive food particles and microbial pathogens, in vitro experiments have suggested that the PE functions as a radical-scavenging antioxidant in caterpillars. This study tested the hypothesis that the PE is a "sacrificial antioxidant" in vivo in caterpillars. As a sacrificial antioxidant, the PE would (1) bind catalytic… CONTINUE READING

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