Phytoremediation is a relatively new method in agricultural science for removing soil contaminants to some extent through cultivating some plants with the least cost. This research was conducted to examine the role of nickel as a heavy metal in catalase and peroxidase activities and also to study uptake and transfer ability of nickel in the organs of Persian clover. Experiment was done as rando...

The uptake, toxicity, and morphological transformation efficacy of various water-insoluble nickel compounds were examined in tissue culture. Particles (2.2 to 4.8 micrometers) of crystalline Ni3S2, crystalline NiS, and crystalline Ni3Se2 were actively phagocytized by cultured cells as determined by light and electron microscopy. However, particles of similar size consisting of amorphous NiS and...

Nickel compounds induce cell transformation in cell culture models and tumor formation in experimental animals. However, the molecular mechanisms by which nickel compounds induce tumors are not yet well understood. The present study found that exposure of cells to either Ni3S2 or NiCl2 could result in specific transactivation of nuclear factor of activated T cells (NFAT), although it did not sh...

BACKGROUND AND OBJECTIVE Nickel is one of the most prevalent causes of contact allergy in the general population. This study focuses on human exposure to airborne nickel and its potential to induce allergic sensitization. MATERIALS AND METHODS The study group consisted of 309 children at school-starter age living in the West of Germany in the vicinity of two industrial sources and in a rural ...

Nickel acquisition is necessary for urease activity, a major virulence factor of the human gastric pathogen Helicobacter pylori. NixA was identified as a specific nickel uptake system in this organism. Addition of small amounts of nickel to media strongly stimulates urea hydrolysis. On the other hand, high nickel concentrations are deleterious to cell growth. As a possible protective reaction, ...

Intracellular nickel ions (Ni2+) have been shown to cause single-strand breaks in DNA, that were rapidly repaired, and DNA-protein cross-links, that persisted for at least 24 h following removal of extracellular ionic nickel. In this study, we have used the techniques of alkaline elution, chromatin fractionation, and sodium dodecyl sulfate:polyacrylamide gel electrophoresis to examine the DNA-p...

INTRODUCTION Contact with nickel-releasing coins as a cause of hand dermatitis has been debated. AIM Studying a hand dermatitis risk from handling Kuwaiti cupronickel coins among nickel-allergic and nickel non-allergic subjects. MATERIAL AND METHODS One hundred hand dermatitis patients (group I: nickel-allergic) and 100 matched patients (group II: nickel non-allergic) were selected from ove...

Nickel in urine and in air from the breathing zone of 18 male workers in a battery factory was determined weekly during 11 consecutive weeks. The study started immediately following three weeks of Christmas vacation. The nickel levels in air varied but did not increase with time. The average urinary excretion of nickel showed an increase during the first weeks, after which a steady state seemed...

Fig. 1. Allergic nickel dermatitis caused by nickel release from an electric shaver. Nickel allergy is frequent in adult Danes and dermatitis patients (1, 2). The high prevalence is mostly explained by consumer exposure to products that release nickel, e.g. watches, jewellery, buttons, zips, rivets and mobile phones (3–8). It has been debated whether classic dry electric shavers may cause nicke...