Because of the absence of iNOS, stimulation of the macrophages with interferon (IFN)-γ plus tumor necrosis factor (TNF) had only a very weak antileishmanial effect, as seen before.( 14 ) In contrast, addition of 9a or 9b led to a highly significant decrease in the number of intracellular parasites, with 9a being more potent than 9b .
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Hydrolytic reactivity trends among potential prodrugs of the O2-glycosylated diazeniumdiolate family. Targeting nitric oxide to macrophages for antileishmanial activity.
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The sentences
Neither of the fucose derivatives had any perceivable effect on the parasite burden of these cells, and only one of the mannosides ( 5a ) showed any activity, that being of borderline significance.