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Depression: 21st Century Solutions + The Dark Side of Wheat

Abstract Title:

Leishmania amazonensis: xylitol as inhibitor of macrophage infection and stimulator of macrophage nitric oxide production.

Abstract Source:

Exp Parasitol. 2008 May;119(1):74-9. Epub 2007 Dec 28. PMID: 18316079

Abstract Author(s):

Aline Siqueira Ferreira, Maria Aparecida de Souza, Nádia Rezende Barbosa, Silvio Silvério da Silva

Abstract:

Xylitol is a sugar alcohol being explored for clinical uses. The aim was to evaluate the effects of xylitol on Leishmania amazonensis-infected J774A.1 macrophages. Macrophages were infected with L. amazonensis for 3h, washed and incubated with 2.5 or 5.0% xylitol for 24, 48, and 72 h at 37 degrees C. Infection indexes for macrophages incubated only in medium were compared to those treated with xylitol. Cell viability and nitric oxide production were determined each time. Xylitol did not affect L. amazonensis or J774A.1 cell viabilities. Xylitol at 5.0% stimulated nitric oxide production by macrophages at 72 h (p<0.01). At 2.5 and 5.0%, xylitol inhibited nitric oxide production by L. amazonensis at 48 h (p<0.05) when compared to control. Infection indexes were significantly lower at 72 h (p<0.05), (16.9% and 9.6%) in cells cultivated with 2.5 and 5.0% xylitol, respectively, compared to control (38.4%). Results suggest a potential leishmanicidal action of the xylitol on infected macrophages.

Study Type : In Vitro Study
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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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