Results 171 to 180 of about 22,877 (208)
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Interactions of methylmercury with rat primary astrocyte cultures: methylmercury efflux
Brain Research, 1991Methylmercury (MeHg) efflux from rat astrocyte cultures was studied to complement our previous studies on uptake of MeHg in these cells. Exchange with extracellular MeHg was not obligatory for the efflux of [203Hg]MeHg into the extracellular media, because efflux occurred into MeHg-free extracellular media, but stimulation of [203Hg]MeHg net efflux was
M, Aschner, N B, Eberle, H K, Kimelberg
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Pharmacokinetics of methylmercury in sheep
Journal of Applied Toxicology, 1983AbstractA preliminary study of the pharmacokinetics of methylmercury was performed in sheep after a single intravenous dose of 203 Hg‐labeled methylmercury. Blood samples were taken periodically, and plasma and whole blood 203Hg were determined. Blood and plasma 203Hg concentrations exhibited a biphasic exponential decline.
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The uptake of methylmercury and methylmercury cysteine by the rainbow trout (Salmo gairdneri) kidney
General Pharmacology: The Vascular System, 1977Abstract 1. 1. In the rainbow trout ( Salmo gairdneri ), methylmercury (MeHg) cysteine (Cys) is preferentially taken-up by the kidney while unliganded MeHg is preferentially taken-up by the RBC. 2. 2. It appears that MeHg must be dissociated from Cys before it can cross the RBC membrane and that a portion of the total renal mercury uptake is ...
F J, Giblin, E J, Massaro
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Biliary transport of glutathione and methylmercury
American Journal of Physiology-Gastrointestinal and Liver Physiology, 1983The hepatobiliary transport of glutathione (GSH) and methylmercury (MM) was investigated in male and female rats anesthetized with pentobarbital sodium. When bile flow was altered with either sodium dehydrocholate (DHC), hypertonic sucrose infusion, or by hypothermia, the absolute rates of GSH and MM secretion into bile were not affected, resulting in
N, Ballatori, T W, Clarkson
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Toxicity of methylmercury in neonatal cats
Teratology, 1974AbstractKittens, 4–9 days old, from untreated mothers, received oral daily doses of 0.25–1 mg/kg Hg (as CH3HgCl) for various periods. Those given 0.25 and 0.37 mg/kg exhibited no clinical toxicity. At 0.5 mg/kg one of 3 kittens developed toxicity signs after 77 days of treatment whereas the others appeared healthy after 111 and 184 days of dosing ...
K S, Khera +4 more
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2014
Recently, twin sisters Jennie Gunhammar, a photographer, and, her sister, Jessie, a lecturer at the London School of Economics, both died within a year of each other of the autoimmune disease, systemic lupus erythematosus (SLE or lupus) aged just 35 (Jennie and Jessie pictured right). The story hit the UK headlines because Jennie’s long-term boyfriend,
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Recently, twin sisters Jennie Gunhammar, a photographer, and, her sister, Jessie, a lecturer at the London School of Economics, both died within a year of each other of the autoimmune disease, systemic lupus erythematosus (SLE or lupus) aged just 35 (Jennie and Jessie pictured right). The story hit the UK headlines because Jennie’s long-term boyfriend,
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Formation of methylmercury in a terrestrial environment
Nature, 1974WOOD et al.1 demonstrated that the mercury from inorganic chemicals can be methylated by aquatic organisms and also, enzymatically, by extracts of methanogenic bacteria. Since the organic forms of mercury are reported to be more biologically available, these methylation processes in aquatic or sedimentary environments, together with the tendency of ...
W F, Beckert +4 more
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Methylmercury photodegradation in paddy water: An overlooked process mitigating methylmercury risks
Water ResearchPhotodegradation is critical to reduce the potent neurotoxic methylmercury (MeHg) in water and its subsequent accumulation along food chains. However, this process has been largely ignored in rice paddies, which are hotspots of MeHg production and receive about a quarter of the world's developed freshwater resources.
Huan Zhong +10 more
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The effects of methylmercury on the developing brain
Progress in Neurobiology, 1989In an attempt to elucidate the mechanisms of methylmercury (MeHg) action on the developing brain, MeHg effects on neuronal migration and on proliferative neuroepithelial germinal cells within the ventricular zone of telencephalic vesicles were investigated in C57BL/6J mice.
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2014
Mercury is a naturally occurring element found in the Earth’s crust, air, soil, and water. Since the Earth’s formation, volcanic eruptions, weathering of rocks, and burning coal have caused mercury to be released into the environment. Once released, certain types of bacteria in the environment can change mercury into methylmercury.
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Mercury is a naturally occurring element found in the Earth’s crust, air, soil, and water. Since the Earth’s formation, volcanic eruptions, weathering of rocks, and burning coal have caused mercury to be released into the environment. Once released, certain types of bacteria in the environment can change mercury into methylmercury.
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