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- W4250402783 abstract "We studied the effects on total thiols glutathione (GSH) and cysteine contents in Plasmodium falciparum in vitro when treated with four steroid derivatives and a sapogenin (Diosgenone) extracted from Solanum nudum. We also determined their capacity to inhibit β-hematin formation. We showed that SN-1 (16α-acetoxy-26-hydroxycholest-4-ene-3,22-dione) increased total glutathione and cysteine concentrations while SN-4 (26-O-β-d-glucopyranosyloxy-16α-acetoxycholest-4-ene-3,22-dione) decreased the concentration of both thiols. Acetylation in C16 was crucial for the effect of SN-1 while type furostanol and terminal glucosidation were necessary for the inhibitory properties of SN-4. The combination of steroids and buthionine sulfoximine, a specific inhibitor of a step-limiting enzyme in GSH synthesis, did not modify the glutathione contents. Finally, we found that SN-1 inhibited more than 80% of β-hematin formation at 5.0 mM, while the other steroids did not show any effect." @default.
- W4250402783 created "2022-05-12" @default.
- W4250402783 date "1991-04-01" @default.
- W4250402783 modified "2023-09-27" @default.
- W4250402783 title "Structures of powders and coatings of iron-base eutectic alloys" @default.
- W4250402783 doi "https://doi.org/10.1016/0026-0657(91)90583-m" @default.
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