Chelates can inhibit the iron- and copper-catalyzed autoxidation of ascorbate at pH 7.0. Diethylenetriaminepentaacetic acid (DTPA or DETAPAC) and Desferal (deferoximane mesylate) slow the iron-catalyzed oxidation of ascorbate as effectively as reducing the trace levels of contaminating iron in buffers with Chelex resin. DETAPAC, EDTA and HEDTA (N-(2-hydroxyethyl)-ethylenediaminetriacetic acid) ...

U s e of chelating agents--especially the new compound Fe 1 3 8 t o correct iron chlorosis by effectively supplying iron to plants has proved promising in a series of experiments. All plant species tested-but not all individual plants-responded to treatment, and some of the individuals within species did respond with retreatment. Treatment responses in the field have lasted from two to six mont...

BACKGROUND AND OBJECTIVES Mucormycoses are a group of invasive infections caused by filamentous fungi of the Mucoraceae family, with the rhinocerebral form of the disease being the most common in large case series. In the present paper we review the characteristics of the rhinocerebral form of the disease. EVIDENCE AND INFORMATION SOURCES The present review is based on the analysis of the cur...

Crystals of the title compound, [Fe(C(8)H(7)N(3))(3)](2)[PMo(12)O(40)]·6H(2)O, prepared under hydro-thermal conditions, are isotypic with the Mn(2+) and Cd(2+) analogues. The Fe(2+) cation is in a distorted octa-hedral coordination by six N atoms from three chelating 3-(2-pyrid-yl)-1H-pyrazole ligands. The heteropoly-anion [PMo(12)O(40)](4-) is a one-electron reduced species in which two O atom...

Synthesis and Characterization of SecondGeneration Iron Pro-chelators by Lissette Perez Department of Chemistry Duke University Date:_______________________ Approved: ___________________________ Katherine J. Franz, Supervisor ___________________________ Alivn Crumbliss ___________________________ Richard MacPhail An abstract of a thesis submitted in partial fulfillment of the requirements for t...

Killing of intracellular Penicillium marneffei conidia is demonstrated in gamma interferon-lipopolysaccharide-activated human THP1 and mouse J774 cells. Iron overload significantly reduces the antifungal activity of macrophages. Likewise, exogenous iron enhances and iron chelators inhibit the extracellular growth of P. marneffei. These results suggest that iron availability critically affects i...

The title compound, [Fe4(C10H15)2(C8H10O4S2)2S4], contains a twisted Fe4S4 cubane-like core. A twofold rotation axis passes through the Fe4S4 core, completing the coordination of the four Fe atoms with two penta-methyl-cyclo-penta-dienyl ligands and two chelating dithiol-ate ligands. There are three short Fe-Fe and three long Fe⋯Fe contacts in the Fe4S4 core, suggesting bonding and non-bonding ...

water repellents, antioxidants, and chelators for specific elements, including metals required by wood-decaying fungi such as iron or manganese. Selected laboratory and field exposure results obtained by combining organic biocides with one or more non-biocidal additives are presented in this chapter. Future wood preservative systems, either based on this chapter’s concept or other possible tech...

The title ligand ('L') in crystalline [CuBrL(2)]Br.CH(3)OH and [Cu(OH(2))L(2)]SO(4).H(2)O.CH(3)OH chelates to both the copper(II) cations and the charge-balancing anions.