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• W2107331489 abstract "SUMMARY Benznidazole (BZL) is a nitroheterocyclic drug employed in the chemotherapy of Chagas’ disease, a protozoan disease caused by Trypanosoma cruzi. Because this parasite mostly replicates in macrophages, we investigated whether BZL was likely to modify the synthesis of macrophage mediators such as nitrite, tumour necrosis factor-alpha (TNF-α), IL-1β, IL-6 and IL-10. Control and stimulated murine macrophages (lipopolysaccharide (LPS) and/or interferon-gamma (IFN-γ)) were treated with BZL and measurements were carried out in culture supernatants collected 24 h later. Synthesis of nitrite, IL-6 and IL-10 was maximal upon combined stimulation with LPS + IFN-γ, whereas lower amounts of the three mediators were detected when both stimuli were given alone. BZL treatment significantly reduced nitrite, IL-6 and IL-10 production, to undetectable levels in some cases, particularly IL-6 and IL-10. LPS was the most potent stimulus of IL-1β and TNF-α production, followed by LPS + IFN-γ and IFN-γ in decreasing order. BZL partly inhibited TNF-α synthesis, but this effect was smaller than that observed for nitrite, IL-6 and IL-10. LPS-induced production of IL-1β was also affected by BZL. Semiquantification of gene expression for inducible nitric oxide synthase (iNOS) showed that BZL completely inhibited iNOS gene induction by IFN-γ, and resulted in respective inhibitions of 30% and 50% with LPS- and LPS + IFN-γ-stimulated cells. BZL was not cytotoxic on macrophage cultures, as shown by the lactate dehydrogenase activity. Besides its trypanocidal activity, BZL may also alter the balance between pro- and anti-inflammatory mediators with important consequences for the course of T. cruzi infection." @default.
• W2107331489 created "2016-06-24" @default.
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• W2107331489 date "1999-11-01" @default.
• W2107331489 modified "2023-09-30" @default.
• W2107331489 title "Benznidazole, a drug employed in the treatment of Chagas’ disease, down-regulates the synthesis of nitrite and cytokines by murine stimulated macrophages" @default.
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• W2107331489 doi "https://doi.org/10.1046/j.1365-2249.1999.01053.x" @default.
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