Match!
Agnieszka J. Bednarska
Polish Academy of Sciences
ChemistryToxicokineticsGround beetleCadmiumBiology
34Publications
13H-index
449Citations
What is this?
Publications 34
Newest
#1Zuzanna M. Świątek (Jagiellonian University)H-Index: 4
#2Olga Woźnicka (Jagiellonian University)H-Index: 4
Last. Agnieszka J. Bednarska (PAN: Polish Academy of Sciences)H-Index: 13
view all 3 authors...
Abstract A major uptake route of nanoparticles (NPs) occurs via the gastrointestinal (GI) tract. When GI tract cells are exposed, NPs cytotoxic effects are observed that subsequently adversely affect the GI tract morphology and have consequences for the whole organism. The aim of this study was to understand the mechanism of effects caused by ZnO-NPs compared to Zn ions on the earthworm Eisenia andrei. The following aspects of individually exposed earthworms were investigated: 1) qualitative str...
1 CitationsSource
The aim of the study was to determine the course and outcome of bacterial meningitis (BM) in patients with cancer. We retrospectively reviewed files of patients with community-acquired BM, hospitalized in a single neuroinfection center between January 2010 and December 2017. There were 209 patients included in the analysis: 28 had cancer (9 women, 19 men; median age 76, IQR 67–80 years) and 181 were cancer-free (76 women, 105 men; median age 52, IQR 33–65 years) and constituted the control group...
Source
#1Zuzanna M. Świątek (Jagiellonian University)H-Index: 4
#2Agnieszka J. Bednarska (PAN: Polish Academy of Sciences)H-Index: 13
The energy budget is an indicator of an organism’s overall condition. Changes in energy reserves and/or energy consumption have been used as biomarkers of toxic stress. To understand the effects of different forms and concentrations of Zn and the costs of effective Zn regulation by the earthworm Eisenia andrei, we performed a toxicokinetic experiment in which individuals were sampled over time to determine the available energy reserves (total carbohydrate, protein, and lipid content), energy con...
Source
#1Agnieszka J. Bednarska (PAN: Polish Academy of Sciences)H-Index: 13
#2Zuzanna M. Świątek (Jagiellonian University)H-Index: 4
Last. Anna Maria Labecka (Jagiellonian University)H-Index: 7
view all 3 authors...
In most laboratory studies with oral exposure of terrestrial invertebrates to metals an artificial food, which is easy to handle, is used. The bioavailability of metals from this artificial food may, however, be much higher than from more field relevant food sources. Such differences may affect toxicokinetic processes in different tissues. To test the effect of bioavailability of Cd in food on Cd toxicokinetics and internal distribution in terrestrial invertebrates, we performed the experiment u...
1 CitationsSource
#1Marcin Paciorek (Medical University of Warsaw)H-Index: 3
Last. Andrzej HorbanH-Index: 44
view all 13 authors...
Background: The aim of the study was to determine the effect of chronic alcohol abuse on the course and outcome of bacterial meningitis (BM). Materials/methods: We analyzed records of patients with BM who were hospitalized between January 2010 and December 2017 in the largest neuroinfection center in Poland. Results: 340 adult patients (211 men and 129 women) were analyzed. Forty-five (13.2%) patients were alcoholics (39 men and 6 women). Compared to non-alcoholics, alcoholics were more likely t...
Source
#1Agnieszka J. Bednarska (PAN: Polish Academy of Sciences)H-Index: 13
#2Bartłomiej Wyżga (PAN: Polish Academy of Sciences)H-Index: 23
Last. Renata Kędzior (H.I., S.I.: University of Agriculture, Faisalabad)H-Index: 3
view all 4 authors...
Abstract Effects of passive restoration of mountain rivers on the organisms inhabiting exposed riverine sediments are considerably less understood than those concerning aquatic biota. Thus, the effects of a recovery of the Raba River after abandonment of maintenance of its channelization scheme on ground beetle ( Coleoptera : Carabidae) communities were investigated by comparing 6 unmanaged cross-sections and 6 cross-sections from adjacent channelized reaches. In each cross-section, ground beetl...
5 CitationsSource
#1Agnieszka J. Bednarska (PAN: Polish Academy of Sciences)H-Index: 13
#2Zuzanna M. Świątek (Jagiellonian University)H-Index: 4
Last. Natalia Kubińska (Jagiellonian University)H-Index: 1
view all 4 authors...
Metals assimilated by organisms are sequestered in various compartments and some forms are more stable than others. Sequestration mechanisms used by invertebrates to detoxify metals and prevent interaction with important biomolecules include metal binding to proteins and other ligands, and storage in inorganic granules. The rate and extent at which metal concentrations in different compartments respond to metal concentrations in food and food characteristics has not received much attention, desp...
3 CitationsSource
#1Zuzanna M. Świątek (Jagiellonian University)H-Index: 4
#2Cornelis A.M. van Gestel (VU: VU University Amsterdam)H-Index: 44
Last. Agnieszka J. Bednarska (PAN: Polish Academy of Sciences)H-Index: 13
view all 3 authors...
Abstract The toxicokinetics of zinc in the earthworm Eisenia andrei was investigated following exposure for 21 days to ionic zinc (ZnCl 2 ) or zinc oxide nanoparticles (ZnO-NPs) in Lufa 2.2 soil, followed by 21 days elimination in clean soil. Two concentrations were tested for both ZnCl 2 (250 and 500 μg Zn g −1 ) and ZnO-NPs (500 and 1000 μg Zn g −1 ), corresponding to EC 25 and EC 50 for effects on reproduction. Based on the measured internal Zn concentrations in the earthworms over time of ex...
12 CitationsSource
#1Marta PopielH-Index: 4
#2Karol PerlejewskiH-Index: 7
Last. Tomasz LaskusH-Index: 35
view all 15 authors...
: Encephalitis is a severe neurological syndrome associated with high morbidity and mortality as well as long-term neurological sequelae. Despite being an important public health problem, very few extensive population-based studies were conducted so far in the world and none in Central Europe. Altogether 114 consecutive patients meeting the initial criteria for encephalitis were enrolled at the Warsaw Hospital for Infectious Diseases between June 2012 and July 2015. Eighteen patients were second...
4 CitationsSource
#1Agnieszka J. Bednarska (PAN: Polish Academy of Sciences)H-Index: 13
#2Maciej Choczyński (Jagiellonian University)H-Index: 3
Last. Marcin Walczak (Jagiellonian University)H-Index: 1
view all 4 authors...
Abstract In polluted environments organisms are commonly exposed to a combination of chemicals with different modes of action, and their effects can be additionally modified by natural abiotic conditions. One possible mechanism for interactions in mixtures is via toxicokinetics, as chemicals may alter the uptake, distribution, biotransformation and/or elimination of each other, and all these processes can be affected by temperature. In this study, the effect of temperature (T) on the toxicokinet...
12 CitationsSource
1234