نتایج جستجو برای: کادمیم cadmium
تعداد نتایج: 24850 فیلتر نتایج به سال:
Environmental pollution with the nephrotoxic metal cadmium is considered a potential health risk for the general population. In 1976 it was reported that the cadmium concentration in human kidney cortex in Sweden had increased in parallel with increasing levels in soil and grain during the twentieth century. Since the cadmium concentration in farming lands is still increasing, the present study...
The toxicity of dissolved cadmium to a variety of marine animals has been found to be related to salinity, with decreased toxicity observed at higher salinities. Recent data from our laboratory have demonstrated that the toxicity of cadmium to estuarine shrimp and larval fish is a function of free cadmium ion concentration, which in turn is controlled by the chloride concentration of the water....
To elucidate the influence of cadmium exposure on bone metabolism, associations between urinary/blood cadmium and bone resorption/formation markers were investigated in older cadmium exposed men and women. Increased urinary cross-linked N-telopeptide of type I collagen (NTx), a bone resorption marker, was found to be associated with increased levels of parathyroid hormone, fractional excretion ...
INTRODUCTION This study investigated whether heavy metal levels were higher in people from Taiwan as compared to those from Western countries. METHODS We measured the level of heavy metals (lead, mercury, arsenic and cadmium) in the blood of 40 apparently healthy adults. Since mercury does not respond to ethylenediaminetetraacetic acid (EDTA) infusion, only urine lead, arsenic and cadmium lev...
Cadmium is a major environmental toxicant that is released into the atmosphere, water and soil in the form of cadmium oxide, cadmium chloride, or cadmium sulfide via industrial activities, such as the manufacturing of batteries and pigments, metal smelting and refining and municipal waste incineration. In the present study, we investigated the effects of cadmium exposure on sperm quality parame...
A life table response experiment (LTRE) was used to quantify the population-level effects of continuous, multigeneration cadmium exposure on two strains of the freshwater gastropod, Biomphalaria glabrata: the parasite-resistant BS90 and parasite-susceptible NMRI strains. Snails were exposed to waterborne cadmium for three consecutive generations. Survival, growth, and reproduction were measured...
We investigated the physiological and biochemical mechanisms by which H2S mitigates the cadmium stress in rice. Results revealed that cadmium exposure resulted in growth inhibition and biomass reduction, which is correlated with the increased uptake of cadmium and depletion of the photosynthetic pigments, leaf water contents, essential minerals, water-soluble proteins, and enzymatic and non-enz...
Datura innoxia cells from suspension cultures were selected for their ability to grow and divide rapidly in normally lethal concentrations of cadmium. Cells resistant to 12.5, 25, 50, 100, 160, 200, and 250 micromolar cadmium chloride were isolated and utilized to initiate cell suspension cultures resistant to this toxic metal ion. Variant cell lines retained their ability to grow in cadmium af...
سابقه و هدف: امروزه به حذف و پالایش محیطهای آلوده به فلزهای سنگین توجه زیادی میشود. جذب زیستی یک روش موثر برای حذف فلزهای سنگین از محلولهای آبی میباشد. در این پژوهش جذب زیستی کادمیم توسط پوست میگو مورد بررسی قرار گرفت. مواد وروشها: مطالعات جذب سطحی کادمیم توسط پوست میگو به عنوان تابعی از pH در محدودهی pH 3 تا 8 در یک غلظت کادمیم 8 میلیگرم در لیتر انجام گردید. همدماهای جذب سطحی در محدود...
The mechanism of cellular uptake of cadmium, a highly toxic metal ion, is not known. We have studied cadmium uptake and toxicity in an established secretory cell line, GH4C1, which has well characterized calcium channels. Nimodipine, an antagonist of voltage-sensitive calcium channels, protected cells against cadmium toxicity by increasing the LD50 for CdCl2 from 15 to 45 microM, whereas the ca...
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