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Anopheles dirus is refractory to a rodent malaria parasite, Plasmodium yoelii, and melanized oocysts are manifested in infected mosquitoes. Prophenoloxidase (PPO) is a zymogen whose active form mediates melanotic encapsulation of invading pathogens in mosquitoes. In this study, we cloned cDNA fragments of four An. dirus PPOs, that are orthologs of Anopheles gambiae PPO2, PPO4, PPO5 and PPO6. AdPPO4...
Although knowledge of the mosquito immune response has recently improved, less is known about the impact of antimalarial drugs on mosquito immunity. In the present study, we found that nitroquine, an effective antimalaria drug, could also induce melanotic encapsulation of Plasmodium by Anopheles stephensi. The melanization rate of the nitroquine treated group was 60.8%. To explore the effect of nitroquine...
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