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- W4207025039 endingPage "109662" @default.
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- W4207025039 abstract "We previously reported that the Trichinella nematode showed higher parasite loads in one gender than another, but also the parasite molting rate decreased when it was cultivated in the presence of progesterone. In this study we explored the hypothesis that the direct effect of progesterone on Trichinella spiralis could be mediated by a steroid-binding parasite protein. We sequenced, cloned and amplified the Cyt-domain of the progesterone receptor membrane component-2 of Trichinella spiralis (PGRMC2-Ts). Furthermore, we expressed the protein and developed an antibody to perform confocal microscopy and flow cytometry. The expression of the PGRMC2-Ts protein was exclusively detected at the oocyte and the parasite's cuticle in cross-sections of the parasite, and this expression was confirmed by western blot and flow cytometry. Molecular modeling studies and computer docking for the PGRMC2-Ts protein showed that it is potentially able to bind to progesterone, estradiol, testosterone, and dihydrotestosterone with different affinities. Furthermore, phylogenetic analysis demonstrated that T. spiralis PGRMC2 is related to a steroid-binding protein of another platyhelminth. Progesterone probably acts upon Trichinella spiralis oocytes by binding to PGRMC2-Ts. Our data showed that the PGRMC2-Ts protein is present in the parasite's oocytes, a development step that is crucial for the life cycle of the parasite. Indeed, this research might have implications in the field of host-parasite co-evolution and the sex-associated susceptibility to this infection. In a more practical matter, these results may contribute to the design of new drugs with anti-parasite effects." @default.
- W4207025039 created "2022-01-26" @default.
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- W4207025039 date "2022-02-01" @default.
- W4207025039 modified "2023-10-18" @default.
- W4207025039 title "Molecular identification of a PGRMC-2 receptor in maturing oocytes of the zoonotic nematode parasite Trichinella spiralis" @default.
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- W4207025039 doi "https://doi.org/10.1016/j.vetpar.2022.109662" @default.
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