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  • Title: Midgut specific immune response of vector mosquito Anopheles stephensi to malaria parasite Plasmodium.
    Author: Gakhar SK, Shandilya HK.
    Journal: Indian J Exp Biol; 2001 Mar; 39(3):287-90. PubMed ID: 11495292.
    Abstract:
    Innate immune-related polypeptides expression in midgut in the ageing vector mosquito A. stephensi following infection by malaria parasite, Plasmodium yoelii yoelii has been studied. Twenty polypeptides were induced by an infected blood meal during various stages of adult life. A 24 kDa polypeptide was induced generally in most of the stages. Maximum parasite induced polypeptides i.e. 22, 33, 111, 122, 127, 140, 143 and 146 kDa were found in 5 days of post blood feeding (PBF) which coincides with the presence of oocysts on the midgut. However, in addition, three polypeptides in 11 days PBF and 8 polypeptides in 20 days PBF were also induced due to parasite infection in aged mosquitoes. Quantitatively, the amount of soluble proteins in the midgut in oocyst-sporozoite-positive mosquitoes was always less as compared to their normal counterparts. The parasite evidently elicits defined immune responses by inducing specific polypeptides in the midgut of the mosquito.
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