| 1. |
- Barany, E, et al.
(author)
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Mercury and selenium in whole blood and serum in relation to fish consumption and amalgam fillings in adolescents
- 2003
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In: Journal of Trace Elements in Medicine and Biology. - 1878-3252 .- 0946-672X. ; 17:3, s. 165-170
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Journal article (peer-reviewed)abstract
- Mercury and selenium in whole blood and serum of 245 17-year old Swedish adolescents were analysed. The relationships between these elements' concentrations and the consumption of fish as well as the number of dental amalgam fillings were studied. The geometric means (GM) of the mercury concentrations were 1.1 mug/L in blood and 0.43 mug/L in serum. The mean selenium concentration in blood was 110 mug/L and the GM of the serum selenium concentration 110 mug/L. Fish species with dietary restrictions due to elevated mercury Levels (i.e. pike, perch, pikeperch, burbot, eel and halibut) were consumed on average 0.7 times/month and fish species without such restrictions 4.1 times/month. Despite this comparatively Low fish consumption, the adolescents' blood mercury concentrations were positively correlated with fish consumption. Of the adolescents, 39% had amalgam fillings (mean 2 +/- 1.5). Serum mercury was influenced by the number of amalgam fittings, by fish consumption, blood and serum levels of selenium and the residential area. Blood and serum selenium concentrations were not influenced by fish consumption, but were positively associated with the serum mercury concentration.
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| 3. |
- Rodushkin, Ilya, et al.
(author)
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Assessment of the contamination from devices used for sampling and storage of whole blood and serum for element analysis
- 2001
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In: Journal of Trace Elements in Medicine and Biology. - 0946-672X .- 1878-3252. ; 15:1, s. 40-45
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Journal article (peer-reviewed)abstract
- An assessment of potential contamination risk associated with devices routinely used in hospitals and clinical laboratories for sampling and storage of whole blood and serum was made by analysis of leachates from the devices. The devices checked were disposable stainless steel needles, different types of blood collection tubes; serum separation tubes, disposable plastic pipettes and plastic vials used for serum storage. Concentrations of about 70 elements in solution after leaching with 0.05 mol l(-1) HNO3 were determined by double focusing sector field inductively coupled plasma mass spectrometry (sector field ICP-MS). For the elements present in blood/serum at concentrations higher than 10 ng ml(-1) (Na, Ca, Mg, P, Fe, Br, Si, Zn, Cu, Rb, Se and I) contribution from devices was as a rule negligible (less than 1% of expected concentrations in the body fluids), but for the majority of trace and ultra-trace elements it may significantly affect or even prevent accurate determination. The highest trace element contribution was found to derive from commercially available blood collection and serum separation tubes. Apparent concentrations of Al, Ba, Th, rare earth, and some other elements resulting from contamination were higher than normal serum concentrations all types of tubes tested for.
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| 4. |
- Gerhardsson, Lars, et al.
(author)
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Cadmium, copper and zinc in tissues of deceased copper smelter workers
- 2002
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In: Journal of Trace Elements in Medicine and Biology. - 1878-3252. ; 16:4, s. 261-266
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Journal article (peer-reviewed)abstract
- Workers at a copper and lead smelter in northern Sweden have a multifactorial exposure to a number of heavy metals. The concentrations of cadmium, copper and zinc in Liver, Lung, kidney and brain tissues have been deters mined by atomic absorption spectrometry in 32 deceased tong-term exposed male lead smelter workers, and compared with those of 10 male controls. Furthermore, copper and zinc Levels in hair and nails were determined by energy-dispersive X-ray fluorescence. The highest cadmium concentrations among both workers and controls were observed in kidney, followed in order by liver, lung and brain. The levels in kidney, Liver and Lung were all significantly higher in the workers than in the controls (p < 0.03). Among the workers relatively strong positive correlations (p < 0.03) were observed between cadmium concentrations in liver and lung, liver and kidney, liver and brain, and lung and brain. In the exposed workers a positive correlation was observed between cadmium and zinc concentrations in the kidney (r(s) = 0.38; p = 0.034). This is probably mainly due to the protein metallothionein, which is stored in the kidney, binding equimolar amounts of these two metals. The highest concentrations of copper were found in hair and nails among both workers and controls, followed in order by liver, brain, kidney and Lung. The tissue concentrations of copper in brain, Lung and kidney were all significantly higher among the smelter workers than in the controls (p less than or equal to 0.036). Copper Levels in lung and age at time of death were positively correlated among the exposed workers (r(s) = 0.39; p = 0.029). In the same group, positive correlations between copper and zinc concentrations in kidney (r(s) = 0.45; p = 0.009) and nails (r(s) = 0.68; p < 0.001) were also observed, reflecting possible biological interactions between these two metals. Among both workers and controls, the highest zinc concentrations were found in hair, followed in order by nails, liver, kidney, brain and lung. Significantly higher tissue concentrations among the workers as compared with the reference group were noted in kidney, liver and brain (p &LE; 0.033). Neither copper nor zinc concentrations in hair and nails seemed to provide a useful measure of the trace element status of the smelter workers.Workers at a copper and lead smelter in northern Sweden have a muttifactodal exposure to a number of heavy metals. The concentrations of cadmium, copper and zinc in Liver, Lung, kidney and brain tissues have been deters mined by atomic absorption spectrometry in 32 deceased tong-term exposed male lead smelter workers, and compared with those of 10 male controls. Furthermore, copper and zinc Levels in hair and nails were determined by energy-dispersive X-ray fluorescence. The highest cadmium concentrations among both workers and controls were observed in kidney, followed in order by liver, lung and brain. The levels in kidney, Liver and Lung were all significantly higher in the workers than in the controls (p < 0.03). Among the workers reLativety strong positive correlations (p < 0.03) were observed between cadmium concentrations in liver and lung, liver and kidney, liver and brain, and lung and brain. In the exposed workers a positive correlation was observed between cadmium and zinc concentrations in the kidney (r, = 0.38; p = 0.034). This is probably mainly due to the protein meta llothionei n, which is stored in the kidney, binding equimolar amounts of these two metals. The highest concentrations of copper were found in hair and nails among both workers and controls, followed in order by liver, brain, kidney and Lung. The tissue concentrations of copper in brain, Lung and kidney were all significantLy higher among the smelter workers than in the controls (p &LE;0.036). Copper Levels in lung and age at time of death were positively correlated among the exposed workers (r(s) = 0.39; p = 0.029). In the same group, positive correlations between copper and zinc concentrations in kidney (r(s) = 0.45; p = 0.009) and nails (r(x) = 0.68; p < 0.001) were also observed, reflecting possible biological interactions between these two metals. Among both workers and controls, the highest zinc concentrations were found in hair, followed in order by naits, liver, kidney, brain and lung. Significantly higher tissue concentrations among the workers as compared with the reference group were noted in kidney, liver and brain (p < 0.033). Neither copper nor zinc concentrations in hair and nails seemed to provide a useful measure of the trace element status of the smelter workers.
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