We identified a Cu-accumulating structure with a dynamic role in intracellular Cu homeostasis. During Zn limitation, Chlamydomonas reinhardtii hyperaccumulates Cu, a process dependent on the nutritional Cu sensor CRR1, but it is functionally Cu deficient. Visualization of intracellular Cu revealed major Cu accumulation sites coincident with electron-dense structures that stained positive for lo...

1a [K(P3C2Mes2)] 1b [K(P3C2Bu2)] 2 [(μ,η:η:η-P3C2Mes2)2{Cu(CH3CN)}2{Cu(CH3CN)2}]x[Cl]x 3 [(μ,η:η:η-P3C2Mes2){Cu(CH3CN)(μ2-Cl)}4{K(μ2-dme)}{Cu(CH3CN)0.5(μ2-Cl)}]x 4 [(μ,η:η:η-P3C2Mes2){Cu(CH3CN)(μ2-Br)}4{K(μ2-thf)}{Cu(μ2-Br)}]x 5 [(μ,η:η:η-P3C2Mes2){Cu(CH3CN)(μ2-I)}2{Cu(CH3CN)(μ3-I)}2Cu]x 6 [(μ,η:η:η-P3C2Mes2){Cu(CH3CN)(μ3-I)}2{Cu(CH3CN)(μ4-I)}2Cu2{Cu(CH3CN)}(μ3-I)(μ2-I)]x 7 [(μ,η:η:η-P3C2tBu2)(...

An experiment was conducted to investigate the effects of dietary supplementation of copper chelates in the form of methionine, chitosan and yeast on the performance of laying hens. Four hundred ISA Brown layers, 84 wks old, were assigned to 4 treatments: control, 100 ppm Cu in methionine chelate (Met-Cu), 100 ppm Cu as chitosan chelate (Chitosan-Cu) and 100 ppm Cu as yeast chelate (Yeast-Cu). ...

Performance and Cu status were measured in growing and finishing steers supplemented with different copper (Cu) concentrations and sources. Sixty Angus (n = 36) and Angus x Hereford (n = 24) steers were stratified by weight and initial liver Cu concentration within a breed and randomly assigned to treatments. Treatments consisted of 1) control (no supplemental Cu); 2) 20 mg Cu/kg DM from Cu sul...

we aimed to investigate igg antibody levels specific to toxocara canis (t. canis), a parasite which subsists in dog’s intestine, on serum samples obtained from patients with chronic urticaria (cu) to evaluate effective risk in cu etiopathogenesis.in this study, 73 patients diagnosed with cu and 109 healthy individuals as control group, were included. various factors such as sex, age, education ...

The mechanism underlying the reduced Cu status in rats fed on a high-Sn diet was investigated. Male rats aged 4 weeks were fed ad lib. on purified diets containing either 1 or 100 mg Sn/kg and demineralized water for a period of 4 weeks. The high-Sn diet had no effect on feed intake, body-weight gain or weight of liver and kidney but significantly reduced Cu concentrations in plasma, liver and ...

To solve the main problems of existing coarse grained copper (CG Cu) intrauterine devices (IUD)-namely burst release and a low transfer efficiency of the cupric ions during usage-ultra-fine grained copper (UFG Cu) and single crystal copper (SC Cu) have been investigated as potential substitutes. Their corrosion properties with CG Cu as a control have been studied in simulated uterine fluid (SUF...

Copper concentrations were measured in naturally Cu-deficient and Cu-supplemented yearling Hereford heifers fed tall fescue (Festuca arundinacea Schreb.) or quackgrass (Agropyron repens [L] Beauv.) forage. The data were used to establish a relationship between dietary Cu supplementation and accumulation of liver Cu, and to test the influence of diet and Cu supplementation on blood plasma Cu and...

The multidentate ligands tris[(N'-tert-butylureayl)-N-ethyl)]amine (H(6)1) and 1-(tert-butylaminocarbonyl)-2,2-dimethylaminoethane (H(2)2) have been used to investigate the assembly and properties of complexes with Cu(1.5)Cu(1.5) units. The complexes [Cu(H(5)1)](2)(+) and [Cu(H2)](2)(+) have been isolated and structurally characterized by X-ray diffraction methods. [Cu(H(5)1)](2)(+) has a Cu(1....