abstract：:The metabolic significance of Se in plants is not well documented, though the presence of many selenoenzymes in bacteria and the essentiality of Se in higher animals is established. Since germination is an active process in plant growth and metabolism, the effect of Se was investigated in germinating Vigna radiata L, ...

journal_title：Biological trace element research

authors： Easwari K,Lalitha K

更新日期：1995-05-01 00:00:00

abstract：:We investigated the effects of zinc supplementation in case of moderate growth retardation in which GH treatment could not be used. Zamic (ZA, an association containing arginine, L-methionine, and zinc; from Aguettant pharmaceuticals) was compared with arginine aspartate (AA) (5 g) in a crossover randomized trial (6 m...

journal_title：Biological trace element research

authors： Fons C,Brun JF,Fedou C,Fussellier M,Bardet L,Orsetti A

更新日期：1995-04-01 00:00:00

abstract：:The zinc content in the hair of 654 children living in various rural and industrial areas in southern Poland was assayed by means of the atomic absorption spectrometry, following the dry digestion procedure. The hair of girls exhibited statistically significant higher level of Zn than the boys' hair, although in the s...

journal_title：Biological trace element research

authors： Zachwieja Z,Chlopicka J,Schlegel-Zawadzka M,Zagrodzki P,Wypchlo J,Krośniak M

更新日期：1995-01-01 00:00:00

abstract：:In this experimental study, the effect of cadmium on cold and restraint stress-induced gastric lesions has been studied. Rats received 15 micrograms/mL cadmium-containing water for 30 d, and at the end of this period, they were subjected to cold and restraint stress. Cadmium accumulation in gastric mucosa was associat...

journal_title：Biological trace element research

authors： Oner G,Izgüt VN,Sentürk UK

更新日期：1995-01-01 00:00:00

abstract：:Quin2, a fluorescent calcium probe, has a low affinity for calcium in comparison to its affinities for transition metal ions. Chelation of ferric ion with quin2 strongly enhanced the formation of oxidizing species in the presence of bolus H2O2 as detected with four assays, electron spin resonance with the spin-trap DM...

journal_title：Biological trace element research

authors： Sandström BE,Granström M,Vezin H,Bienvenu P,Marklund SL

更新日期：1995-01-01 00:00:00

abstract：:The effect of increased selenium uptake on serum selenium in diabetic children was investigated during the first 9 yr of the Finnish nationwide selenium fertilization program, which started in 1984. Serum selenium concentrations were followed in 237 diabetic children (mean age 8.1 yr) and 214 controls from 1984 to 199...

journal_title：Biological trace element research

authors： Wang WC,Mäkelä AL,Näntö V,Mäkelä P

更新日期：1995-01-01 00:00:00

abstract：:Descriptions of the effects of paraquat (P2+) on the peroxidation of liver microsomes are very divergent. Therefore, the presence of ferric iron in the medium and the activity of microsomal mixed-function oxidase system are two factors that we have taken into consideration to explain the discrepancies. The results sho...

journal_title：Biological trace element research

authors： Fernandez Y,Subirade I,Anglade F,Periquet A,Mitjavila S

更新日期：1995-01-01 00:00:00

abstract：:In a controlled animal experiment the effects of dietary subacute Zn deficiency on growth, Zn concentration, and tissue 42-K distribution were studied. Growth retardation caused lower body weight because both skeletal and heart muscle showed a reduction in cell mass. Zn concentrations were reduced in most tissues, how...

journal_title：Biological trace element research

authors： Wouwe JP,Veldhuizen M

更新日期：1994-12-01 00:00:00

abstract：:The new range of sealed-tube neutron generators developed by SODERN appears to be appropriate for the industrial environment. The main characteristics are the high emission stability during the very long lifetime of the tube, flexible pulsed mode capability, safety in operation with no radiation in "off" state, and th...

journal_title：Biological trace element research

authors： Bach P,Cluzeau S,Lambermont C

更新日期：1994-10-01 00:00:00

abstract：:Samples of Evernia prunastri, collected in a mountainous zone, were exposed in urban and highly industrialized areas in order to monitor the atmospheric pollution. Amounts of Cr, Mn, Fe, Ni, Cu, Zn, and Pb were determined by EDXRF spectrometry in secondary target excitation mode and in the thin film approach. An incre...

journal_title：Biological trace element research

authors： Caniglia G,Calliari I,Celin L,Tollardo AM

更新日期：1994-10-01 00:00:00

abstract：:Microbeam X-ray spectrometry, energy-dispersive X-ray fluorescence analysis, and neutron activation analysis were evaluated for the detection of selenium contained in the selenoprotein glutathione peroxidase. The glutathione peroxidase had been previously separated using polyacrylamide gel electrophoresis. The use of ...

journal_title：Biological trace element research

authors： Stone SF,Bernasconi G,Haselberger N,Makarewicz M,Ogris R,Wobrauschek P,Zeisler R

更新日期：1994-10-01 00:00:00

abstract：:The trace elements antimony, bromine, cesium, cobalt, iron, rubidium, scandium, strontium and zinc were determined by instrumental neutron activation analysis in breast tissue samples with fibrocystic disease and in samples with fibroadenoma tumors. The histological lesions of each breast sample with fibrocystic disea...

journal_title：Biological trace element research

authors： Kanias GD,Kouri E,Arvaniti H,Karaiosifidi H,Kouneli S

更新日期：1994-10-01 00:00:00

abstract：:Elemental concentrations in head hair and blood (whole-blood, erythrocytes and plasma) of 28 Nigerian subjects were determined using instrumental neutron activation analysis (INAA) and proton-induced X-ray emission (PIXE) techniques. Correlations found between different elements in hair and blood are reported. Hair le...

journal_title：Biological trace element research

authors： Ojo JO,Oluwole AF,Durosinmi MA,Asubiojo OI,Akanle OA,Spyrou NM

更新日期：1994-10-01 00:00:00

abstract：:After considering the need for quality control in NAA, the concept of quality in NAA procedures themselves is discussed, and some important factors identified. Two approaches to improve quality are then described in more detail. The first concerns the unique ability of NAA using different isotopic reactions and differ...

journal_title：Biological trace element research

authors： Byrne AR

更新日期：1994-10-01 00:00:00

abstract：:Neutron activation analysis (NAA) methodology was applied for the certification of eight trace elements (As, Co, Cr, Cu, Hg, Mn, Se, and Zn) in a plankton reference material (CRM 414) prepared by the BCR of the Commission of the European Communities. Average concentrations (micrograms/g dry wt) and standard deviations...

journal_title：Biological trace element research

authors： Grimanis AP,Vassilaki-Grimani M

更新日期：1994-10-01 00:00:00

abstract：:The contribution of gamma-ray scattering to the total efficiency for point-source geometries in a gamma spectrometer was measured. Scattering of gamma-rays on the shield and in the sample was considered. For a 25% efficiency detector in a small shield, about a 1% contribution to the total efficiency was measured, wher...

journal_title：Biological trace element research

authors： Korun M,Martincic R

更新日期：1994-10-01 00:00:00

abstract：:A working analytical procedure for selenium determinations by INAA, using gamma spectrometry with a germanium well-type detector, is presented. The spectral line at 400.7 keV is employed, enhanced with the effect of energy summing in true coincidence of cascade photons. The main advantage of the method is high efficie...

journal_title：Biological trace element research

authors： Makarewicz M,Zeisler R

更新日期：1994-10-01 00:00:00

abstract：:The humoral immune response was evaluated in male CD-1 mice fed the iron deficient (7 ppm Fe), iron sufficient (120 ppm Fe), and high-iron diets (3000 or 5000 ppm Fe) for 54 d. The IgM and IgG antibody responses against sheep erythrocytes (SRBC) determined by hemolytic plaque assay were suppressed by 65.4 and 51.2%, r...

journal_title：Biological trace element research

authors： Omara FO,Blakley BR

更新日期：1994-10-01 00:00:00

abstract：:The interaction of VO2+ with the muchopolysaccharide chondroitin sulfate A (CSA) has been investigated by electron absorption spectroscopy and infrared measurements in aqueous solutions at different pH-values and ligand to metal ratios up to 6:1. The generation of a VO(CSA)2 species could be demonstrated. Coordination...

journal_title：Biological trace element research

authors： Etcheverry SB,Williams PA,Baran EJ

更新日期：1994-07-01 00:00:00

abstract：:Antagonistic interactions between silicon and aluminum occur in living organisms. Thus, an experiment was performed to ascertain whether high dietary aluminum would accentuate the signs of silicon deprivation in rats and conversely whether silicon deprivation would accentuate the response to high dietary aluminum. The...

journal_title：Biological trace element research

authors： Seaborn CD,Nielsen FH

更新日期：1994-06-01 00:00:00

abstract：:In the present study, aluminum (Al) accumulation has been examined after aluminum loading in mice. The kidney, liver, and brain aluminum levels for mice that had been treated orally with aluminum hydroxide for 105 d and for the control group were determined using graphite furnace atomic absorption spectrophotometry (G...

journal_title：Biological trace element research

authors： Sahin G,Varol I,Temizer A,Benli K,Demirdamar R,Duru S

更新日期：1994-04-01 00:00:00

abstract：:The hypothesis that oxygen-derived free radicals play an important role in myocardial ischemic and reperfusion injury has received a lot of support. In the presence of catalytic amounts of transition metals such as iron, superoxide anions, and hydrogen peroxide can be transformed into a highly reactive hydroxyl radica...

journal_title：Biological trace element research

authors： Coudray C,Pucheu S,Boucher F,Arnaud J,de Leiris J,Favier A

更新日期：1994-04-01 00:00:00

abstract：:The association between serum copper and zinc concentrations and age, sex, and other risk factors of cardiovascular disease in randomly selected adult volunteers aged 19-59 were investigated. There was a positive relationship between copper and age in both sexes, but zinc was negatively correlated with age in males on...

journal_title：Biological trace element research

authors： Magalova T,Brtkova A,Bederova A,Kajaba I,Puchonova I

更新日期：1994-03-01 00:00:00

abstract：:In this study, hair levels of Cu and Zn were determined in healthy male and female individuals (n = 192) ages 3.6-14.5 yr and the correlations with Cu and Zn daily intakes were examined. Determinations of Cu and Zn concentrations were performed by way of atomic absorption spectrometry and X-ray fluorescence. Nutrition...

journal_title：Biological trace element research

authors： Contiero E,Folin M

更新日期：1994-02-01 00:00:00

abstract：:Electron energy loss spectroscopy (EELS) is a high spatial resolution electron microscopic technique with the potential to quantify elements at the subcellular level. The presence of each element is demonstrated by the electron energy loss edge at the energy characteristic of that element. The area of the edge may ind...

journal_title：Biological trace element research

authors： Xie X,Yokel RA,Markesbery WR

更新日期：1994-01-01 00:00:00

abstract：:The concentrations of cadmium, lead, selenium, and zinc in blood and seminal plasma were determined in 76 Singapore males. Except for zinc, the concentrations were generally higher in blood than in seminal plasma (cadmium, 1.31 micrograms/L vs 0.61 micrograms/L; lead, 82.6 micrograms/L vs 12.4 micrograms/L, and seleni...

journal_title：Biological trace element research

authors： Xu B,Chia SE,Ong CN

更新日期：1994-01-01 00:00:00

abstract：:It was determined if the sensitivity in macular mutant mouse to copper-induced toxicity was affected by sex or age. The sensitivity in 6-8-d-old or 3-4-wk-old macular mutant mouse to copper-induced toxicity was not affected by sex. However, 8-9-wk-old mutant females were more sensitive to copper-induced toxicity than ...

journal_title：Biological trace element research

authors： Shiraishi N,Taguchi T,Kinebuchi H

更新日期：1993-11-01 00:00:00

abstract：:The objective was to determine if a mammary cell line shows glucocorticoid stimulation of Zn uptake, and to determine whether polyamines mediate this stimulation. 65Zn uptake by COMMA-1D mouse mammary epithelial cells over a 24-h period increased significantly in cells administered 10(-7) or 10(-6) M hydrocortisone. I...

journal_title：Biological trace element research

authors： Allen JC,Vaillancourt SJ,Haedrich L

更新日期：1993-11-01 00:00:00

abstract：:Soaking of a rat diet, high in both plant phytate and phytase, progressively degraded the phytate content with time of soaking. This dephytinization in turn enhanced the digestion of feed organic matter in the animals, and it significantly improved the absorption and retention of minerals and trace elements as observe...

journal_title：Biological trace element research

authors： Larsen T

更新日期：1993-10-01 00:00:00

abstract：:Plasma molybdenum concentrations were determined in children, ages two to 12 yr, with and without phenylketonuria (PKU). Mean plasma molybdenum concentrations did not differ significantly between the children with PKU (1.33 +/- 0.5 microgram/L) and without PKU (1.75 +/- 0.8 microgram/L). Plasma molybdenum concentratio...

journal_title：Biological trace element research

authors： Gropper SS,Yannicelli S

更新日期：1993-09-01 00:00:00

abstract：:Plasma and liver selenium of Wistar rats were determined after 1, 3, and 6 mo supplementation with 0.5, 2, 6, or 15 ppm selenium as sodium selenite in drinking water. Plasma selenium was not different from control values at additional intake of 0.5 ppm but increased above usual levels at higher intakes. A highly signi...

journal_title：Biological trace element research

authors： Crespo AM,Neve J,Pinto RE

更新日期：1993-08-01 00:00:00

abstract：:Because nickel may have a biological function in a pathway in which vitamin B12 is important, an experiment was performed to determine the effects of nitrous oxide exposure in rats deprived of nickel. Exposure to nitrous oxide (N2O) causes inactivation of cobalamin and a subsequent decrease in the vitamin B12-dependen...

journal_title：Biological trace element research

authors： Uthus EO,Poellot RA

更新日期：1993-07-01 00:00:00

abstract：:Experiments were conducted to determine whether the increased glutathione S-transferase (GSH-T) activity associated with selenium (Se) deficiency is necessarily related to losses in the activity of Se-dependent glutathione peroxidase (SeGSHpx) in chicks. Nutritional Se status was altered in two ways: by treatment with...

journal_title：Biological trace element research

authors： Kim YS,Combs GF Jr

更新日期：1993-05-01 00:00:00

abstract：:Comparison of the clastogenic effects of antimony and bismuth used as trioxides, when administered orally by gavaging to laboratory bred male mice, showed that the former was more strongly clastogenic than the latter. Three doses of each chemical (400, 666.67, and 1000 mg/kg body wt), corresponding to 1/50, 1/30, and ...

journal_title：Biological trace element research

authors： Gurnani N,Sharma A,Talukder G

更新日期：1993-05-01 00:00:00

abstract：:In order to study the metabolism of mercury (Hg), its affinity to metallothionein (MT), and its influence on levels of the essential metals copper and zinc in the brain tissue of rats exposed to elemental mercury (HgO) vapor was investigated. The major findings were: 1. After long-term exposure, about 40% of mercury w...

journal_title：Biological trace element research

authors： Falnoga I,Kregar I,Skreblin M,Tusek-Znidaric M,Stegnar P

更新日期：1993-04-01 00:00:00

abstract：:Metallothionein (MT) is a low-mol-wt protein. The essential trace elements copper and zinc and the potentially toxic elements, such as cadmium, can induce the synthesis of and bind to MT. The major functions of MT are related to metal metabolism. This paper reported and evaluated a new method for determination of hepa...

journal_title：Biological trace element research

authors： Jin N,Kimura M,Yokoi K,Itokawa Y

更新日期：1993-02-01 00:00:00

abstract：:The control of metallothionein (MT) synthesis was investigated in freshly prepared rat hepatocytes in experiments of short-term duration. Viability and metabolic function were maintained in incubations of 6-h duration. MT synthesis was measurable in hepatocytes from fed rats at Zn concentrations down to 1 microM. Zn a...

journal_title：Biological trace element research

authors： Coyle P,Philcox JC,Rofe AM

更新日期：1993-01-01 00:00:00

abstract：:Two experiments were performed to confirm that boron interacts with calcium, and that this interaction can be modified by dietary magnesium and potassium in the rat. Upon manipulating the dietary variables listed above, it was found that under certain conditions, boron and calcium deprivation similarly affected severa...

journal_title：Biological trace element research

authors： Nielsen FH,Shuler TR

更新日期：1992-12-01 00:00:00

abstract：:In zinc deficiency, the function of leukocytes is impaired. However, the results of studies on the zinc concentration of blood cells in zinc deficiency are conflicting, probably in part because of technical and analytical problems. The aim of this study was to investigate, under standard conditions, the uptake of 65Zn...

journal_title：Biological trace element research

authors： Naber TH,van den Hamer CJ,van den Broek WJ,van Tongeren JH

更新日期：1992-11-01 00:00:00

abstract：:The hypothesis was tested that marginal copper deficiency affects iron status. Copper restriction (1 vs 5 mg Cu/kg diet) significantly lowered iron concentrations and transferrin saturation in plasma and reduced blood hemoglobin, hematocrit, and iron concentrations in tibia and femur, but raised iron concentrations in...

journal_title：Biological trace element research

authors： Van Den Berg GJ,Van Houwelingen F,Lemmens AG,Beynen AC

更新日期：1992-10-01 00:00:00