in present study we determine the zinc and lead levels in human blood samples by differential pulse polarography under optimum experimental conditions (ph=7.5, scan rate=5mv/s and pulse amplitude=50mv) the polarographic reduction peaks of zn and pb were examinedin the -0.72 v and-0.15 respectively. the zinc and lead content can be determined by in comparison with their standard solutions. accor...

To study the zinc concentration differential in diabetic patients compared with non-diabetics and borderline subjects in a sample of two hundred individuals under investigation, we gathered information on history and duration of diabetes as well as type of treatment and diet. In addition, capillary blood glucose and serum zinc concentrations were measured.The serum zinc level was higher in...

Most Kenyan diets are composed of cereals and legumes that have a high content of zinc inhibitors, whose levels may be reduced through appropriate food processing technologies at the household level. Indigenous food processing methods like soaking, germination, drying, fermentation, boiling, and roasting, and diet combinations usually reduce the levels of zinc antagonists in the plant diets, th...

Few studies have evaluated iron absorption in small children after the first year of life. Our objectives were to examine the relations among iron intake, iron absorption, and iron status in a group of healthy children. We studied 28 children, ages 12 to 48 mo, after a 7-d home adaptation to a diet representative of their usual daily mineral intake. A multi-tracer stable isotope study was perfo...

aim : this study evaluated serum levels of zinc in patient with cd compare to healthy subjects. background : celiac disease (cd) is characterized by small intestinal malabsorption of nutrients as a consequence of ingestion of wheat gluten. zinc is an essential trace element that it has vital biological functions. patients and methods : sera of 30 celiac cases and 30 healthy normal cohorts as co...

Small-molecule fluorescent sensors are versatile agents for detecting mobile zinc in biology. Capitalizing on the abundance of validated mobile zinc probes, we devised a strategy for repurposing existing intensity-based sensors for quantitative applications. Using solid-phase peptide synthesis, we conjugated a zinc-sensitive Zinpyr-1 derivative and a zinc-insensitive 7-hydroxycoumarin derivativ...

Knowledge of the uptake mechanisms and metabolism of metals is essential for understanding the factors governing metal toxicity, discerning means by which acclimation and homeostasis may be achieved and characterising interactions between the metal of interest and other environmental moieties. Zinc is both an important aquatic contaminant and a vital micronutrient. The physiological characteris...

The two-photon absorption properties of a self-organized dimer of a free-base and zinc(II) porphyrins tandem linked with an ethynylene group and terminated by imidazolyl and phenylethynyl groups were investigated. The self-organized dimer was found to exhibit strong two-photon absorption and furthermore the saturation of the two-photon absorption owing to the intense transition.

The ileostomy model is considered to be a reliable model to reflect small bowel absorption. Studies in ileostomy subjects have shown that inulin and oligofructose pass through the small bowel without degradation and without influencing the absorption of nitrogen, fat, starch, calcium, magnesium or zinc. Inulin and oligofructose do not have any considerable effect on cholesterol absorption or bi...

A protected S-acetylthio porphyrin was synthesized and attached to the Au38(2-phenylethanethiolate)24 cluster in a ligand exchange reaction. Chiral high performance liquid chromatography of the functionalized cluster yielded enantiomeric pairs of clusters probably differing in the binding site of the porphyrin. As proven by circular dichroism, the chirality was maintained. Exciton coupling betw...