The conditions of voltammetric determination of zinc in compound pharmaceutical preparations were established and validated. The three investigated preparations (Organic zinc (A), Calcium, zinc, copper with vitamin C (B), Vigor complete (V) contained different salts of zinc (II) and increasing number of other components. The samples of powdered tablets of each preparation were undergone mineral...

abstract heavy metals are the important pollution which there is in the aquatic ecosystems. today, with advances in technology have increased the pollution therefore it is important to assessment the risks. the aim of this study was acute toxicity effects of mercury chloride, lead chloride and zinc chloride in silver carp fish. in this study there were 5 treatments for lead chloride and mercury...

background: contamination of the environment due to heavy metals is a major concern to human life and the environment. this study was conducted to investigate and quantify the copper and zinc concentrations in industrial estates soil in arak, iran. methods: four industrial estates were considered for the experimental design, including arak 1, arak 2, arak 3, and ghotbe sanaati. for preliminary ...

Metal ion homeostasis and heavy metal detoxification systems are regulated by certain genes associated with metal ion transport. Metallothionein (MT) and metal response element binding transcription factor 1 (MTF‑1) are important regulatory proteins involved in the mediation of intracellular metal ion balance. Differences in the zinc‑binding affinities of the zinc fingers of MTF‑1 and the α‑ an...

The use of high energy x-ray fluorescence as a trace metal probe offers scientists an innovative tool for research. One application is the study of heavy metal accumulation in plant systems. The test species Thlaspi caerulescens has the ability to accumulate massive amounts of zinc, cadmium, and lead from contaminated soils as a form of bioremediation. In order to understand the efficiency of t...

AIM To assess serum Hepatocyte Growth Factor (HGF) levels in individuals with anxiety and to test the hypothesis that there is a relationship between HGF levels and zinc therapy. SUBJECTS AND METHODS Serum from 19 individuals with anxiety and 19 controls were tested for serum HGF using ELISAs. HGF serum concentration in individuals with anxiety before zinc and anti-oxidant therapy was compare...

In this study bio-hydrogen and bioethanol were produced from dry biomass of water hyacinth by microbial fermentation under influence of zinc oxide nanoparticles. For fermentative bio-hydrogen production biomass was first pretreated and then saccharified into fermentable sugars by enzymes. Sugars of enzymatic hydrolysis were xylose and glucose with concentration of 9.0% and 8.0% respectively. Fo...

One hundred thirty-four putative Bacillus isolates were recovered from soybean rhizosphere soils of Nimar region to select effective zinc solubilizers for increased assimilation of zinc (Zn) in soybean seeds. These isolates were screened in vitro for zinc-solubilization ability on Tris-minimal agar medium supplemented separately with 0.1% zinc in the form of zinc oxide, zinc phosphate, and zinc...

We examined effects of heat, zinc, ion, and dithiothreitol in restoring the activity of lead-inhibited-5-aminolevulinate dehydratase (EC 4.2.1.24). The ratio of non-activated to activated activity produced by dithiothreitol correlated well with blood lead concentration among 35 lead workers. The individual effects of heat, zinc, or dithiothreitol differ from each other in the shift of pH optimu...

1. Distribution of zinc between the metalloprotein alpha 2-macroglobulin and albumin was determined in samples of serum obtained from twenty-three women in their third trimester of pregnancy and eighteen women who were not pregnant. 2. The decrease observed in total serum zinc in the group of pregnant women could be accounted for in large part by a decreased concentration of albumin-bound zinc....