Full-text resources of PSJD and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl
Preferences help
Polish version English version Language
enabled [disable] Abstract
Number of results

Results found: 11

Number of results on page
first rewind previous Page / 1 next fast forward last

Search results

Search:
in the keywords:  CADMIUM
help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1

Qualitative analysis of stress proteins induced by cadmium in the mussel Mytilus trossulus

100%
Radlowska M., Pempkowiak J.
Oceanological Studies
|
1996
|
vol. 25
|
issue 3
133-137
EN
The exposure of the blue mussel Mytilus trossulus to increased concentration of cadmium in seawater resulted in the synthesis of a new protein of the approximate molecular weight of 60 kDa. This protein is immunologically crossreactive with the 60 kDa heat shock protein of the moth Heliothis virescens. The latter one is a member of a highly conserved family of proteins found in animals at various levels of organization. This result indicates that changes in the abundance of stress proteins may prove useful as a biomarket of mussels exposure to specific toxicants.
2

Comparison of cadmium uptake from food and seawater by the blue mussel Mytilus edulis

100%
Kozuch J., Pempkowiak J.
Oceanological Studies
|
1994
|
issue 67/10
33-40
EN
The accumulation of cadmium from food and seawater by the blue mussels Mytilus edulis was studied in laboratory conditions.Cadmium uptake from food was found to be just a tenth of that from seawater.The accumulation rate was rather strongly modified by cadmium concentration in seawater.At higher concentration, both, gills and hepatopancreas were the target organs for cadmium, whereas low concentration - cadmium was stored in hepatopancreas only.Considerable fraction of the accumulated cadmium was adsorbed on shell.A distinct difference in the kinetics of cadmium adsorption on shells food and seawater was noticed.
3

Distribution of cadmium in the inner organs of Mytilus trossulus during Short-Term exposure of the mussels in the sea water containing different concentrations of metal

100%
Kozuch J.
Oceanological Studies
|
1996
|
vol. 25
|
issue 3
123-131
EN
The experiments of short-term exposure of Mytilus trossulus to cadmium in sea water were carried out in laboratory conditions. The mussels were picked up from the Gulf of Gda?sk and kept in the seawater of temperature 10oC and salinity 7%. The solution of CdCl2 containing radioactiwe isotope of cadmium 115mCd (T1/2 = 43 days) was added to the water and used as a metal tracer. The isotope's specific activity was in the range from 2000 to 10000 Bq115mCd?dm-3, which is equal to the range of 2-10 mgCd?dm-3 of stable cadmium in the water. The time of exposure varied from 10 minutes to 24 hours. A distinct increase in the specific activity of radiocadmium in the soft tissue of the analysed mussels was observed. Thin increase was proportional to the increase in the specific activity of cadmium in water and to the time of exposure. The distribution of the accumulated metal in various inner organs of mussels was not stable in time. At the beginning of exposure (first hour) the biggest concentration of the metal was noticed in gills, smaller in hepatopancreas and the smallest in the remaining soft tissue containing mostly mantle and muscles. After the sec-ond hour and during the remaining 23 hours of exposure the biggest amounts of the accumu-lated metal were found in hepatopancreas. The concentration of radiocadmium in the rest of the soft tissue remained the lowest throughout the exposure.
4

The long-term effect of cadmium exposure through food on the postnatal development of the bank vole (Clethrionomys glareolus Schreber 1780).

100%
Bialonska D., Zakrzewska M., Sawicka-Kapusta K., Konior M.
Folia Biologica
|
2002
|
vol. 50
|
issue 3-4
203-209
EN
Cadmium is well known for its toxicity to the animal body. However, its effect on pregnancy and the development of young animals is still not well understood. This study examined such effects, using bank voles captured from the wild to make the results closer to those which could be expected in the natural environment. One group of animals was fed 7mug g-1 cadmium in the food, a second 35 mug g-1, and a third no cadmium, as a control. The concentrations of cadmium in the whole bodies of young bank voles were determined on the 3rd, 5th, or 10th day of life. The cadmium level in the bodies of animals exposed to 35 mug g-1 of cadmium was significantly higher than in those from either the control group or the group receiving 7 mug g-1 of cadmium, which did not differ from each other. The cadmium level did not change with animal age in any of the study groups. Concentrations of Zn, Cu, and Fe were also determined in the whole body of young animals, as cadmium is known to disturb the metabolism of these essential metals through antagonistic activity. Both Cu and Fe levels were negatively correlated with cadmium concentrations, while a positive correlation was found between zinc and cadmium in the young animal bodies. Also found was higher offspring mortality in the group receiving 35 mug g-1 of cadmium in food. There was no difference in young animal body weight between the study groups.
5

Cadmium removal by alginate beads in an air-lift reactor

100%
Wojnowska-Baryla I., Babuchowski A.
Biotechnologia
|
1997
|
issue 2
186-194
EN
This paper presents the results of a research on cadmium removal by alginate beads from an aqueous solution in an air-lift reactor. The research focused on the ability of alginate to establish an unstable coupling between cadmium and ionogenic groups of this polysaccharide. Cadmium removal by the alginate beads took place in the air-lift reactor in two phases: sorption and desorption.. The efficiency of cadmium uptake by the alginate beads in the air-lift reactor was investigated in relation to the influent concentration of cadmium amounting to 5, 10, 50 mg Cd+2? dm 3 at flow rates of 2 and 4 L ? min-1. The efficiency varied from 48.5% to 91.9% depending on the sorption duration. Cadmium recovery from the alginate beads was achieved by reducing pH up to 1.8 by 0.5 M nitric acid. The efficiency of cadmium recovery amounted to 59.8 - 96.0 %.
6

Field and laboratory studies on the influence of humic substances on the accumulation of cadmiun by Mytilus edulis

100%
Pempkowiak J., Kozuch J.
Oceanological Studies
|
1993
|
issue 64/3
245-251
7

Characteristics of the ability to uptake cadmium by free and immobilized bacteria Kliebsiella pneumoniae

88%
Wojnowska-Baryla I., Stolarczyk E., Gredzinska A.
Biotechnologia
|
1997
|
issue 4
103-112
EN
The ability to uptake cadmium of the following biosorbents: alginate gel, free and immobilized in alginate bacteria Kliebsiella pneumoniae was characterized. An average efficiency of cadmium removal from solution with initial cadmium concentration range from 1 to 200 mg Cd2+?dm-3 was 78,6% by alginate gel and immobilized bacteria Kliebsiella pneumoniae and 60% by free bacteria. The maximum efficiency of cadmium removal from solution with initial concentration 1 mg Cd2+? dm-3 was obtained for bacteria immobilized in alginate gel.
8

The effect of cadmium and lead ions on microbial decomposition of organic biopolimers in an eutropic lake

88%
Gajewski A. J., Chrost R. J.
Biotechnologia
|
1994
|
issue 3
71-81
EN
The effects of cadmium and lead ions on bacterial ectoenzymatic activities and on the rates of organic substrates uptake were investigated in short-period experments.Both the acivitiees of ectoenzymes and rates of organic substrates uptake by bacteria were strongly inhibited by studied metal ions even in their low concentrations.Three types of inhibition: competitive (aminopeptidase) ,noncompetitive (lipase) and mixed (alkaline phosphatse) due to Pb and Cd ions were observed.The potential mechanisms of changes of the physical and chemical properties of studied enzymes by cadmium and lead were discussed.
9

Characteristics of the ability to uptake cadmium by bacteria biosorbents

75%
Wojnowska-Baryla I., Stolarczyk E., Gredzinska A.
Biotechnologia
|
1997
|
issue 4
113-124
EN
The ability of the following bacteria: Escherichia coli, Kliebsiella pneumoniae, Proteus mirabilis, Proteus vulgaris, Pseudomonas sp. to uptake cadmium from water solution was investigated. Based on the parameters of Freundlich and Langmuir equations it was found that the kind of equation describing cadmium uptake by bacteria cells depended on the range of initial cadmium concentration in solution. Cadmium uptake by the investigated strains of bacteria from solution with low initial concentration of cadmium proceeded according to the Freundlich model. Increasing of the initial cadmium concentration above 30 mg Cd2+? dm-3 resulted in a change of the cadmium uptake mechanism and sorption was according to the Langmuir model. The best biosorbents were Pseudomonas sp. and Proteus vulgaris which showed high sorption ability in a wide range of initial concentrations (1-200 mg Cd2+ ? dm-3). In the range of low initial cadmium concentration (1-30 mg Cd2+? dm-3), the most effective biosorbent was Kliebsiella pneumoniae.
10

Evaluation of nephrotoxicity of cadmium in laboratory animals and humans

63%
Halatek T., Chmielnicka J.
Postępy Higieny i Medycyny Doświadczalnej
|
1993
|
vol. 47
|
issue 5
375-401
EN
available
11

The geochemical profile of bottom sediments in the Domiaza (Oder river estuary, northwest Poland)

51%
Piotrowski S., Laba-Mydlowska E.
Oceanological and Hydrobiological Studies
|
2003
|
issue 4
79-115
EN
The Domiaza is a fragment of the Oder river estuary situated north of Szczecin. This area is exposed to complex hydrological processes and strong anthropogenic pressure. Key physical and chemical parameters of the Domiaza sediments (fraction < 2mm), e.g., dry residue (Ds), ignition loss (Iz), CaCO3 and organic carbon content, show high coefficients of variation (over 60%). Similar variation is typical of the heavy metal concentrations (Cu, Zn, Pb, Co, Cd and Hg) and the organic carbon content in the fraction smaller than 0.20 mm. The spatial distribution of the examined parameters in the Domiaza sediments results from the dynamics of this environment, especially the heavy watercraft traffic and the continuous dredging of the Szczecin-Swinoujscie water lane. Concentrations of Cd, Cu, Zn, Pb and Co found in the Domiaza sediments are higher than those found in the geochemical background of Poland, while concentrations of mercury are comparable. Moreover, the concentrations of Cu, Zn, Pb and Cd found in the Domiaza sediments are higher than the average concentrations of these metals in adjacent areas (Oder River, Dabie Lake, Szczecin Lagoon), but the concentrations of Hg and Co are comparable or lower depending on the area of reference. A survey of heavy metals concentrations conducted in 1999 detected higher than average concentrations of Cu, Zn, Pb, and particularly Co (twice) and Hg (over thirty times), and lower concentrations of Cd in comparison with the average levels of 1996. The reason for these differences was the selective inflow of heavy metals to the Domiaza area after the disastrous flood of 1997.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.