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- W2085995029 abstract "Squalene synthase (SQS) catalyses the first committed step of sterol biosynthesis; a blockade of this enzyme does not affect the production of other essential isoprenoids. In the present study, 3-(biphenyl-4-yl)-3-hydroxyquinuclidine (BPQ-OH) and ER27856, two specific inhibitors of SQS, were tested against epimastigote forms of Trypanosoma cruzi. Both compounds inhibited parasite multiplication with IC(50) values of 24.3 and 4.5 microM, respectively and induced marked morphological changes. These changes included: (a) detachment of the plasma membrane from the cell body, forming blebs; (b) detachment of the membrane lining the cell body and the flagellum from the sub-pellicular and axonemal microtubules; (c) enlargement of the flagellar pocket; (d) enlargement of a vacuole localised close to the flagellar pocket, which may correspond to a contractile vacuole; (e) mitochondrial swelling, with the appearance of concentric structures formed by invaginations of the inner mitochondrial membrane; (f) alterations in the nucleus of some cells, where the chromatin appears in clumps, as described for apoptotic cells; and (g) blockage of cytokinesis. These alterations are interpreted as a consequence of the depletion of essential parasite sterols induced by the experimental compounds and the concomitant alteration of the physical properties of the parasite membranes." @default.
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- W2085995029 date "2004-07-01" @default.
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- W2085995029 title "Effects of squalene synthase inhibitors on the growth and ultrastructure of Trypanosoma cruzi" @default.
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- W2085995029 doi "https://doi.org/10.1016/j.ijantimicag.2003.12.009" @default.
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