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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

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.

Metal's toxicity for microorganisms - studies with the use of fluorogenic substrate

100%

Grabowski J., Scully P. P., Edwards R., El S. S., Latosinska M.

Biotechnologia

1997

issue 1

25-36

The paper shows advantages of fluorogenic substrate in toxicity studies:(1) - the evaluation of the pure metal effect; (2) - the determination of antagonistic effects; (3) - the mechanism of inhibition (Hg, Pb and Cd were characterized by competitive, noncompetitive and ancompetitive, approprately).

Microorganisms resistant to heavy metals and toxic chemicals as indicators of environmental pollution and their use in bioremediation

75%

Haq R. U., Shakoori A. R., Haq R. U., Shakoori a. R.

Folia Biologica

2000

vol. 48

issue 3-4

143-147

Microorganisms present in water samples from various industrial effluents were analysed for their resistance to lead, chromium, and cadmium. The ability of these microorganisms to grow on or metabolize toxic hydrocarbons and pesticides was also checked. Microorganisms in samples from the steel and tanning industries were generally resistant to metal ions but were not capable of metabolizing toxic hydrocarbons. Conversely, microorganisms found in samples of pesticide and from the chemical industry were capable of metabolizing hydrocarbons and pesticides but were not much resistant to metal ions. Microorganisms from effluents of the paint industry and urban wastes were resistant to lead. A correlation between the population of microorganisms and the type of pollution was observed. Indigenous microorganism could be regarded as indicators of pollution and be used in various operations to resist, process, metabolize, and detoxify toxic industrial wastes.

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2 Folia Biologica

1 Biotechnologia

1 2002

1 2000

1 1997

1 Bialonska D.

1 Edwards R.

1 El S. S.

1 Grabowski J.

1 Haq R. U.

1 Konior M.

1 Latosinska M.

1 Sawicka-Kapusta K.

1 Scully P. P.

1 Shakoori A. R.

1 Shakoori a. R.

1 Zakrzewska M.

Search results

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

Metal's toxicity for microorganisms - studies with the use of fluorogenic substrate

Microorganisms resistant to heavy metals and toxic chemicals as indicators of environmental pollution and their use in bioremediation