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1.
The concentrations of 55 elements in the millipede, Oxidus gracilis, soil and plant in the habitat were examined using inductively coupled plasma atomic emission spectrometry (ICP-AES) and
inductively coupled plasma mass spectrometry (ICP-MS). In all the millipedes, Ca concentration derived from calcium carbonate
in the exoskeleton was the highest at average 94 μ/mg-weight. The other major elements were the following: Mg, K, Na, Zn,
Fe, Al, Cu, Sr, Ba, Mn and Ti (> 1 ng/mg-body weight), whereas Se, Mo, Ag, Cd, Co, Li and Ce etc. were in trace levels. Interestingly,
the various 15 elements such as Ca, Na, Zn, Al, Ba, Ga, Ag, Cd, Co and Y in environmental habitats were well reflected in
the body of the millipede. Although the heavy metal contents, in the order of Cu>Pb>Cd, were similar to those of other invertebrates,
Cu in the millipede was remarkably high concentration. Zn was maintained in a range of 72–394 ng/mg-weight as essential element
in the body and no difference was found in the sexes. The C1 chondrite normalization pattern for lanthanoid series elements
in the millipede, soil and plant indicated that the environmental habitats were well protected from pollution. These characteristics
of internal elements and metal accumulation in the millipede or relation to their habitats would be useful information for
the environmental pollution studies. 相似文献
2.
Ki Hyun Kim Masayuki Funaba Munehiro Yoshida Tohru Matsui 《Biological trace element research》2013,151(1):100-104
Our previous report indicated that magnesium (Mg) deficiency increased molybdenum (Mo) concentration in the rat liver, suggesting the possibility that Mg deficiency affects Mo metabolism. Growing male rats were given a control diet or a Mg-deficient diet for 4 weeks. Urine and feces were collected during the second and fourth weeks of the feeding trial. The liver, kidney, spleen, skeletal muscle, and blood were collected at the end of the feeding trial. Mg deficiency did not affect the apparent absorption of Mo, but it reduced urinary excretion of Mo. The retention of Mo tended to be higher in the Mg-deficient group than in the control group. Hepatic Mo concentration was higher in the Mg-deficient group than in the control group, but Mg deficiency did not affect Mo concentration in other tissues and plasma. Mg deficiency downregulated the mRNA expression of Mo transporter 2 (MOT2) in the liver, but not in the kidney. These results suggest that Mg deficiency decreases urinary Mo excretion, which is too slight to affect plasma Mo concentration, and that Mg deficiency selectively disturbs the homeostatic mechanism of Mo in the liver, which is not related to the mRNA expression of MOT2 in the liver. 相似文献
3.
This study reports effects on soil solution chemistry and plant uptake of 55 elements (Ag, Al, As, B, Ba, Be, Bi, Br, Ca, Cd, Ce, Co, Cr, Cs, Cu, Dy, Er, Eu, Fe, Gd, Ge, Hf, Hg, Ho, K, La, Li, Lu, Mg, Mn, Mo, Na, Nb, Nd, Ni, P, Pb, Pr, Rb, S, Sb, Sc, Se, Si, Sm, Sr, Tb, Th, Tl, U, V, W, Y, Yb, Zn, Zr) by raising the pH using addition of fine-grained precipitated calcium carbonate at 20 rates (yielding a soil solution pH range of 5.2 – 7.8) to A horizon samples of an acid Cambisol, cultivating a common grass (Agrostis capillaris L.) and determining the soil solution, root and shoot concentrations of these elements at the end of the experiment. For many of these elements, there is little or no previous information about concentrations in soil solutions, or in plant biomass, as related to soil pH/acidity or addition of calcium carbonate. Soil solutions were obtained by high speed centrifugation and ultrafiltration (0.2 m) of samples at 60% water-holding capacity. Concentrations of elements were determined by ICP-ES or (in most elements) ICP-MS, using isotopes specified. Soil solution pH, HCO3 and organic C were also determined.Concentrations of elements in the biomass of A. capillaris were usually inversely related to soil solution pH. The most apparent (p<0.001) inverse, though often curvilinear, relationships between pH and concentrations in shoot biomass were measured for Ag, As, B, Ba, Eu, Ge, Li, Mn, Ni, P and Sr. Positive relationships (p<0.05) were only measured in Ca, Hg, Mg, Mo and S. For concentrations in root biomass, relationships were mostly, but not always, of the same sign and of a similar strength. Though soil solution pH and concentrations of elements were usually quite closely correlated, pH and/or HCO–
3 concentration more often accounted for a higher share of the variability in biomass concentration of elements than did soil solution concentration of the same element. 相似文献
4.
In order to determine any possible relation between chemical composition of a person’s blood to formation of dental caries,
whole blood was analyzed for 35 inorganic elements (Si, Al, Fe, Ca, Mg, K, Mn, Ti, P, Li, Be, B, V, Cr, Co, Ni, Cu, Zn, As,
Sr, Y, Nb, Mo, Ag, Cd, Sn, Sb, Ba, La, Ce, W, Pb, Bi, Zr, and F) in the 15 people having sound teeth as well as an equal number
of those having multiple caries. The results showed the absence of 13 elements (Si, Al, Mn, Ti, Be, Co, As, Y, Cd, Ba, La,
Ce, and Zr) in the blood of both groups. Of the remaining 22 elements, the results of only seven elements (Fe, P, B, V, Sr,
Sn, and F) were significantly different between the two groups. The most remarkable finding of this study was significantly
decreased amount of phosphorus, strontium, and fluorine and perhaps increased boron in the blood of persons with caries. 相似文献
5.
Nose Yasuhiro Enomoto Shuichi Ambe Shizuko Ambe Fumitoshi Yamaguchi Isamu 《Biological trace element research》1999,(1):639-639
To estimate the applicability of yeastSaccharomyces cerevisiae as a radioisotope accumulator, biosorption of 18 radionuclides (isotopes of Be, Na, Sc, V, Cr, Mn, Fe, Co, Zn, As, Se, Rb,
Sr, Y, Zr, Tc, Ru, and Rh) by the cells was tested using a multitracer technique. This technique enables us to examine the
uptake of various elements under an identical condition. We showed that the yeast has ability to take up radioactive tracers
of Be, Sc, V, Cr, Mn, Fe, Co, Zn, As, Se, Sr, Y, Zr, Ru, and Rh from an aqueous environment. Tracers of Be, Sc, Mn, Co, Zn,
Se, Sr, Y, and Zr were distributed in both cell walls and other cell parts. Moreover, tracers of Sc, Mn, Co, Zn, Se, Sr, and
Y were present as soluble and insoluble forms, and most of the Be and Zr were present as an insoluble form in the cells. 相似文献
6.
Reference values for trace and ultratrace elements in human serum determined by double-focusing ICP-MS 总被引:3,自引:0,他引:3
Cristina Sariego Muñiz José Luis Fernández-Martin Juan Manuel Marchante-Gayón José Ignacio García Alonso Jorge B. Cannata-Andía Alfredo Sanz-Medel 《Biological trace element research》2001,82(1-3):259-272
Reference values for trace and ultratrace elements concentrations in healthy human serum, measured by double-focusing inductively
coupled plasma-mass spectrometry (ICP-MS), are presented. Blood donors from Asturias (Spain) were selected as the reference
population (n=59). Blood samples were collected, after donation, taking the necessary precautions to avoid contamination. All subjects
analyzed had normal renal function and nutritional status, as shown from their creatinine and albumin levels. A total number
of 14 elements (Al, Ca, Cr, Mn, Fe, Co, Cu, Zn, Rb, Sr, Mo, Cd, Pb, and U) were monitored almost simultaneously. Serum samples
were diluted 1+4 with ultrapure water and matrix interferences were corrected using Sc, Ga, Y, and Tl as internal standards.
Fe, Cu, and Zn were also determined by isotope dilution analysis (IDA).
Reference trace element concentrations intervals observed containing 95% of the reference distribution after excluding outliers
are presented. Fourteen serum samples from hemodialysis patients were also analyzed for comparison. High levels of Al, Cr,
Sr, Mo, Mn, Pb, U, Co, and Cu and low levels of Fe, Zn, and Rb were found in the serum samples from hemodialysis patients
compared to the corresponding reference values observed in this work. 相似文献
7.
Sofia Zaichick Vladimir Zaichick Vasilii K. Karandashev Irina R. Moskvina 《Biological trace element research》2011,143(1):41-57
The effect of age and gender on 59 trace-element contents in rib bone of 80 apparently healthy 15–55-year-old women (n?=?38) and men (n?=?42) was investigated by inductively coupled plasma mass spectrometry. Mean values (M?±?SΕΜ) for the mass fraction (milligrams per kilogram, on dry-weight basis) of Ba, Bi, Cd, Ce, Cu, Dy, Er, Gd, La, Li, Mn, Mo, Nd, Pb, Pr, Rb, Sm, Sr, Tb, Tl, U, Yb, and Zn for both female and male taken together were: Ba 2.5?±?0.2, Bi 0.015?±?0.002, Cd 0.044?±?0.005, Ce 0.029?±?0.002, Cu 1.05?±?0.06, Dy 0.0020?±?0.0003, Er 0.0011?±?0.0002, Gd 0.0015?±?0.0001, La 0.020?±?0.002, Li 0.040?±?0.002, Mn 0.354?±?0.004, Mo 0.052?±?0.006, Nd 0.011?±?0.001, Pb 2.24?±?0.14, Pr 0.0032?±?0.0004, Rb 1.51?±?0.06, Sm 0.0014?±?0.0001, Sr 291?±?20, Tb 0.00041?±?0.00005, Tl 0.00050?±?0.00003, U 0.0013?±?0.0001, Yb 0.00072?±?0.00007, and Zn 92.8?±?1.5, respectively. The upper limit of mean contents of Ag, Al, B, Be, Br, Cr, Cs, Hg, Ho, Lu, Ni, Sb, Te, Th, Ti, Tm, and Y were: Ag?≤?0.011, Al?≤?7.2, B?≤?0.65, Be?≤?0.0032, Br?≤?3.9, Cr?≤?0.25, Cs?≤?0.0077, Hg?≤?0.018, Ho?≤?0.00053, Lu?≤?0.00024, Ni?≤?1.05, Sb?≤?0.0096, Te?≤?0.0057, Th?≤?0.0030, Ti?≤?2.8, Tm?≤?0.00006, and Y?≤?0.0047, respectively. In all bone samples, the contents of As, Au, Co, Eu, Ga, Hf, Ir, Nb, Pd, Pt, Re, Rh, Sc, Se, Sn, Ta, V, W, and Zr were under detection limits. The Ce, Dy, Er, Gd, La, Nd, Pr, Sm, Tb, and Yb contents increase with age. Higher Sr mass fraction is typical of female rib as compared to those in male bone. 相似文献
8.
Richard F. Puchyr Dean A. Bass Rob Gajewski Mishelle Calvin William Marquardt Karen Urek Mary Ellen Druyan David Quig 《Biological trace element research》1998,62(3):167-182
The preparation of hair for the determination of elements is a critical component of the analysis procedure. Open-beaker,
closedvessel microwave, and flowthrough microwave digestion are methods that have been used for sample preparation and are
discussed. A new digestion method for use with inductively coupled plasma-mass spectrometry (ICP-MS) has been developed. The
method uses 0.2 g of hair and 3 mL of concentrated nitric acid in an atmospheric pressurelow-temperature microwave digestion
(APLTMD) system. This preparation method is useful in handling a large numbers of samples per day and may be adapted to hair
sample weights ranging from 0.08 to 0.3 g. After digestion, samples are analyzed by ICP-MS to determine the concentration
of Li, Be, B, Na, Mg, Al, P, S, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Se, Rb, Sr, Zr, Mo, Pd, Ag, Cd, Sn, Sb,
I, Cs, Ba, Pt, Au, Hg, Tl, Pb, Bi, Th, and U. Benefits of the APLTMD include reduced contamination and sample handling, and
increased precision, reliability, and sample throughput. 相似文献
9.
The chemical characteristics of the surface sediment (0–5 cm) in a lake which formed in an opencast sulphur mine have been analysed. Generally, the concentration of major elements (N, P, S, Ca, K, Mg, Cl, Fe, Si, and Al) and trace elements (Ag, As, Ba, Cd, Co, Cr, Cu, Ga, Hg, I, Mn, Mo, Ni, Pb, Rb, Sr, Ti, Y, and Zn) in the lake sediment reflected the natural regional background. The sediment was characterised by low amounts of organic matter (LOI ca. 5%). MANOVA indicated that the concentrations of 60% of the elements differed significantly between transects and 32% with respect to depths, whereas the seasonal differentiations were not found. The relationships between the studied elements calculated using factor analysis and correlation matrix are discussed. The bottom sediment show considerable heterogeneity, which is probably connected to their allochthonous origins and the young age of the lake. 相似文献
10.
Malpuech-Brugère C Nowacki W Daveau M Gueux E Linard C Rock E Lebreton J Mazur A Rayssiguier Y 《Biochimica et biophysica acta》2000,1501(2-3):91-98
The importance of inflammatory processes in the pathology of Mg deficiency has been recently reconsidered but the sequence of events leading to the inflammatory response remains unclear. Thus, the purpose of the present study was to characterize more precisely the acute phase response following Mg deficiency in the rat. Weaning male Wistar rats were pair-fed either a Mg-deficient or a control diet for either 4 or 8 days. The characteristic allergy-like crisis of Mg-deficient rats was accompanied by a blood leukocyte response and changes in leukocytes subpopulations. A significant increase in interleukin-6 (IL-6) plasma level was observed in Mg-deficient rats compared to rats fed a control diet. The inflammatory process was accompanied by an increase in plasma levels of acute phase proteins. The concentrations of alpha2-macroglobulin and alpha1-acid glycoprotein in the plasma of Mg-deficient rats were higher than in control rats. This was accompanied in the liver by an increase in the level of mRNA coding for these proteins. Moreover, Mg-deficient rats showed a significant increase in plasma fibrinogen and a significant decrease in albumin concentrations. Macrophages found in greater number in the peritoneal cavity of Mg-deficient rats were activated endogenously and appeared to be primed for superoxide production following phorbol myristate acetate stimulation. A high plasma level of IL-6 could be detected as early as day 4 for the Mg-deficient diet. Substance P does not appear to be the initiator of inflammation since IL-6 increase was observed without plasma elevation of this neuropeptide. The fact that the inflammatory response was an early consequence of Mg deficiency suggests that reduced extracellular Mg might be responsible for the activated state of immune cells. 相似文献
11.
Tadashi Shimamura Satoe Iijima Mitsuhiro Hirayama Masato Iwashita Shigeru Akiyama Yuichi Takaku Sakae Yumoto 《Journal of trace elements in medicine and biology》2013,27(4):286-294
The concentrations of 22 major and trace elements in livers from rats aging from 5 to 113 weeks old were determined. The rats investigated were the same rats previously reported with respect to 29 elements in bones (femur) and 26 elements in kidneys. The samples were decomposed with high-purity nitric acid and hydrogen peroxide. Seven elements (Na, Mg, P, K, Ca, Fe and Zn) were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES), and 15 elements (Mn, Co, Cu, As, Se, Rb, Sr, Mo, Cd, Sn, Sb, Cs, Ba, Pb and Bi) were determined by inductively coupled plasma mass spectrometry (ICP-MS). Analysis of variance (ANOVA) for age variations indicated that the concentrations of many elements, such as Mg, P, K, Mn, Fe, Cu, Zn, Sr, Mo and Cd, were almost constant across the ages of the rats with the exception of 5 weeks old (p > 0.05). Arsenic, Pb and Bi showed significant increasing trends, while Na and Co showed decreasing trends (p < 0.01). Selenium showed a decreasing trend except at the initial stage of 5–9 weeks old. Calcium, Rb, Sn, Sb, Cs and Ba showed significant age-related variations, but their patterns were not monotonic. The liver clearly contrasts with the kidneys, in which many elements showed significant age-related variations with increasing trends. The concentration ranges of Mg, P, K, Mn, Cu, Zn, and Mo were controlled within 15% across all ages of rats. The homeostasis of the aforementioned elements may be well established in the liver. The toxic elements, such as Cd, Pb and Bi, showed a narrow concentration range among age-matched rats. 相似文献
12.
Wang X Tian J Yin XM Zhang X Qin ZH Li ZW Wang QZ Li SB 《Biological trace element research》2001,81(2):177-183
A multitracer solution obtained from the nuclear reaction of selenium with 25-MeV/nucleon 40Ar ions was orally administered to normal and tumor-bearing Balb/c male mice. After 96 h, the mice were sacrificed and the
elemental distribution was determined in various tissues, organs, and blood. The uptake of Na, Rb, Ga, Sc, V, Cr, Mn, Co,
Fe, Zn, Y, Zr, Tc, Ru, Ag, and In in normal and, except for zinc, in tumor-bearing mice was simultaneously detected. Most
elements were distributed in about the same manner in the skin and liver of animals in both groups. The distribution of Rb,
Ga, V, Cr, Tc, and In showed little or no significant differences between the two study groups. The distribution of Na, Mn,
Fe, Ag, Sc, and Co showed significant differences between normal and tumor-bearing mice. In the blood, spleen, and kidney
of the normal mice, there was good absorption of Na, Mn, Fe, Ag, Co, and Zn. In the heart, these elements were well absorbed,
except for Na and Mn. 相似文献
13.
14.
Asano K Suzuki K Chiba M Sera K Asano R Sakai T 《Biological trace element research》2005,107(2):135-140
The concentrations of 28 elements (Al, Br, Ca, Cl, Co, Cu, Cr, Fe, Ga, Hg, K, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Rb, S, Se, Si,
Sr, Ti, V, Y, and Zn) were measured in mane hair by the particle-induced X-ray emission method. Except for Br, Cl, K, S, and
P, the trace element concentrations in mane hair of horses are similar to literature values for human hair. The values obtained
are not dependent on the horse's age, breed, and sex and could be used as reference values in the assessment of diseases and
nutritional status in equines. 相似文献
15.
Because there is a paucity of information on the mineral requirements of free-ranging deer, data are needed from clinically healthy deer to provide a basis for the diagnosis of mineral deficiencies. To our knowledge, no reports are available on baseline hepatic mineral concentrations from sympatric white-tailed deer (Odocoileus virginianus) and mule deer (Odocoileus hemionus) using different habitats in the Northern Great Plains. We assessed variation in hepatic minerals of female white-tailed deer (n = 42) and mule deer (n = 41). Deer were collected in February and August 2002 and 2003 from study areas in Custer and Pennington Counties, South Dakota, in and adjacent to a wildfire burn. Hepatic samples were tested for levels (parts per million; ppm) of aluminum (Al), antimony (Sb), arsenic (As), barium (Ba), boron (B), cadmium (Cd), calcium (Ca), chromium (Cr), cobalt (Co), copper (Cu), iron (Fe), lead (Pb), magnesium (Mg), manganese (Mn), mercury (Hg), molybdenum (Mo), nickel (Ni), phosphorus (P), potassium (K), selenium (Se), sodium (Na), sulfur (S), thalium (Tl), and zinc (Zn). We predicted that variability in element concentrations would occur between burned and unburned habitat due to changes in plant communities and thereby forage availability. We determined that Zn, Cu, and Ba values differed (P 相似文献
16.
Planells E Sánchez-Morito N Montellano MA Aranda P Llopis J 《Journal of physiology and biochemistry》2000,56(3):217-222
In previous studies based on indirect procedures, we reported that Mg deficit increased the bioavailability of a number of elements such as calcium, zinc, iron, copper, manganese and decreased selenium absorption. The present study was designed to verify these findings by direct methods. We investigated the effect of dietary magnesium deficiency on enterocyte Ca, Fe, Zn, Cu, Mn and Se concentrations. Male Wistar rats were fed a Mg-deficient diet (129 mg Mg/kg food) for 70 days. Whole enterocytes from the upper jejunum were isolated and Ca, Fe, Zn, Cu, Mn and Se were determined. The results were compared with findings in a control group that was pair-fed with an identical diet except that it covered this species's nutritional requirements for Mg (480 mg Mg/kg food). The Mg-deficient diet significantly increased enterocyte content of Ca, Fe, Zn, Cu and Mn; however, we found no significant changes in the Se content of these cells. These data support the results obtained by indirect methods. 相似文献
17.
18.
The radioactive multitracer technique was applied to the simultaneous determination of the uptake of 17 trace elements (Be,
Na, Sc, V, Cr, Mn, Fe, Co, Zn, As, Se, Rb, Sr, Y, Zr, Nb, and Ru) in the liver, kidney, and blood of hypercholesterolemic
model mice. The uptakes of Be, Sc, V, Cr, Fe, As, Rb, Y, Zr, Nb, and Ru in liver increased with an increasing feeding period
of a cholesterol-rich diet, whereas the uptakes of Zn and Se decreased. Feeding of the diet resulted in a marked increase
in serum total cholesterol, triglycerides, and low-density lipoprotein cholesterol. The metabolism of trace elements between
cholesterolemic and normal mice was compared with respect to their serum cholesterol levels. A significant positive correlation
was found between the concentration of serum triglycerides and liver uptakes of Cr, Fe, and As and a negative correlation
for the uptake of Zn. A significant positive correlation was found between the concentrations of serum high- and low-density
lipoprotein cholesterols and kidney uptakes of Cr and Rb. A negative correlation was found between the uptake of Be in the
blood and the concentration of serum triglycerides. These results suggest that cholesterolemia have some specific effects
on the metabolism of some elements. 相似文献
19.
《Epigenetics》2013,8(5):573-578
Prenatal under-nutrition involves changes in the epigenetic regulation of specific genes. Maternal magnesium (Mg) deficiency affects maternal glucocorticoid metabolism, but the mechanisms underlying changes in glucocorticoid homeostasis of offspring are not well understood. In this study, we investigated the effects of feeding pregnant rats a Mg-deficient diet (0.003% magnesium) on the methylation of cytosine-guanine (CpG) dinucleotides in hepatic glucocorticoid genes of neonatal offspring, compared with controls (0.082% magnesium). Methylation of CpG dinucleotides in the peroxisome proliferator-activated receptor α (Ppara), glucocorticoid receptor (Nr3c1) and 11β-hydroxysteroid dehydrogenase-2 (Hsd11b2) promoters in the liver were measured by pyrosequencing. Quantitative real-time PCR was used to assess hepatic mRNA expression of each gene. Mean methylation of the Hsd11b2 promoter in the Mg-deficient offspring (33.2%) was higher than in controls (10.4%). This was due to a specific increase at CpG dinucleotides 1 (20.0% vs. control 10.1%), 2 (58.8% vs. 17.0%), 3 (29.7% vs. 6.2%) and 4 (38.7% vs. 8.8%) (p < 0.05). Ppara and Nr3c1 methylation status and expression did not differ between the groups. No significant difference was noted between male and female pups, which were equally represented. Therefore, a Mg-deficient diet alters glucocorticoid metabolism, predicting higher hepatic intracellular glucocorticoid concentrations, and is possibly a key mechanism that induces the metabolic complications of Mg deficiency. 相似文献
20.
《生物化学与生物物理学报:疾病的分子基础》1999,1453(1):35-40
Magnesium (Mg) plays an essential role in fundamental cellular reactions and the importance of the immuno-inflammatory processes in the pathology of Mg deficiency has been recently reconsidered. The purpose of the present study was to assess the effect of different stages of Mg deficiency on endotoxin response and tumor necrosis factor-α (TNFα) production. Weaning male Wistar rats were pair fed either a Mg-deficient or a control diet. At day 7, lipopolysaccharide (LPS) induced no lethal effects in control rats but resulted in 70% mortality in Mg-deficient rats within 3 h. The vulnerability of Mg-deficient rats to LPS was associated with higher TNFα plasma values. Mg-deficient animals that received magnesium supplementation before endotoxin challenge had significantly increased survival. At day 2, control and Mg-deficient rats were also subjected to endotoxin challenge with or without magnesium pre-treatment. A significant increase in TNFα plasma level was observed in Mg-deficient rats compared to rats fed the control diet. Mg-deficient rats that received magnesium replacement therapy before endotoxin challenge had significantly lower TNFα plasma values than those receiving saline before endotoxin. Thus, the results of this experiment suggest that the activated or primed state of immune cells is an early event occurring in Mg deficiency. 相似文献