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001-es BibID:	BIBFORM098758
035-os BibID:	(Scopus)85107909516 (WOS)000666688500001
Első szerző:	Georgieva, Elenka
Cím:	Which Is More Toxic? Evaluation of the Short-Term Toxic Effects of Chlorpyrifos and Cypermethrin on Selected Biomarkers in Common Carp (Cyprinus carpio, Linnaeus 1758) / Elenka Georgieva, Vesela Yancheva, Stela Stoyanova, Iliana Velcheva, Ilia Iliev, Tonka Vasileva, Veselin Bivolarski, Eleonora Petkova, Brigitta László, Krisztián Nyeste, László Antal
Dátum:	2021
ISSN:	2305-6304
Megjegyzések:	The general aim of this study was to investigate the negative short-term effects of different concentrations of chlorpyrifos (CPF) and cypermethrin (CYP), based on the EU legislation (MAC-EQS) in common carp (Cyprinus carpio Linnaeus, 1758) under laboratory conditions and to compare their toxicity. The fish were exposed to the pesticides for 96 h and then different histological and biochemical biomarkers were investigated in the gills and liver, and bioaccumulation analyses were conducted. The chemical studies showed increased pesticide concentrations in the gills as the first site for pollutants compared to the liver at the 96th hour. In addition, the histological analyses showed severe alterations in the gills and liver after exposure to both tested pesticides. In the gills, we found mainly intense proliferative and, to a lesser extent, degenerative changes and alterations in the circulatory system, such as necrosis and vasodilation. In the liver, regressive and progressive lesions, as well as circulatory disturbances and inflammation, were observed. The regressive lesions showed a higher degree of expression compared to the other changes. Furthermore, we found altered enzymatic activities?catalase, glutathione reductase, and glutathione peroxidase?in the liver, compared to the control. Overall, both tested pesticides impacted the studied biomarkers in common carp, even at concentrations lower than those permitted by law. However, the results of the comparative analysis showed a relatively higher toxicity of CYP compared to CPF in the fish. Still, questions persist as to whether the observed changes are adaptive or entirely destructive. To avoid any danger or risk, these pesticides must be applied cautiously, especially near water bodies.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk pesticides water contamination fish biomarkers
Megjelenés:	Toxics. - 9 : 6 (2021), p. 125-. -
További szerzők:	Yancheva, Vesela Stoyanova, Stela Velcheva, Iliana Iliev, Ilia Vasileva, Tonka Bivolarski, Veselin Petkova, Eleonora László Brigitta (1983-) (molekuláris biológus, mikrobiológus) Nyeste Krisztián József (1993-) (hidrobiológus) Antal László (1984-) (hidrobiológus, biológus-ökológus)
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001-es BibID:	BIBFORM125839
035-os BibID:	(Scopus)85213345638 (WoS)001383704000001
Első szerző:	Parvez, Md Sohel
Cím:	Accumulation of Microplastics and Potentially Toxic Elements in Plant Leaves Along an Urbanization Gradient in Bangladesh / Md Sohel Parvez, Herta Czédli, Imdadul Hoque, Mohammad Mizanur Rahman, Armin Anwar, Abu Hena Mohammad Mezbah Uddin, Siddiq Hasan, Dina Bibi, Béla Tóthmérész, Tibor Magura, Edina Simon
Dátum:	2024
ISSN:	2305-6304
Megjegyzések:	Potentially toxic elements (PTEs) and microplastics (MPs) in the atmosphere raise widespread apprehension due to their association with the ecosystem and public health. The accumulation of airborne MPs and PTEs was analyzed in Polyalthia longifolia leaves, and the Pollution Index (PI) was calculated along an industrial, residential, and rural gradient in Bangladesh. Only polyethylene terephthalate (PET) was found in the highest concentration in industrial areas compared to other areas. In leaves, a significantly higher Cd, Pb, and Zn concentration was found in industrial regions compared to residential and rural areas. For Cd, the PI was observed to be higher than 1 in rural areas, indicating a moderate level of pollution; it was higher than 3 in residential areas, showing considerable pollution; and it was found to be more than 6 in industrial areas. The higher concentration of both MPs and PTEs with increasing urbanization reflects the influence of anthropogenic activities. The findings of the study demonstrate the fascinating potential of P. longifolia tree leaves as a promising bioindicator for air quality biomonitoring.
Tárgyszavak:	Műszaki tudományok Bio-, környezet- és vegyészmérnöki tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk microplastics leaf dust pollution index bioindicator air pollution
Megjelenés:	Toxics. - 12 : 12 (2024), p. 1-18. -
További szerzők:	Czédli Herta (1977-) (környezetvédelmi ökológus, fizikus) Hoque, Imdadul Rahman, Mohammad Mizanur Anwar, Armin Uddin, Abu Hena Mohammad Mezbah Hasan, Siddiq Bibi, Dina (1999-) (Ecologist) Tóthmérész Béla (1960-) (ökológus) Magura Tibor (1969-) (ökológus) Simon Edina (1981-) (ökológus)
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001-es BibID:	BIBFORM130818
Első szerző:	Stoyanova, Stela
Cím:	Kidneys Under Siege: Pesticides Impact Renal Health in the Freshwater Fish Common Carp (Cyprinus carpio Linnaeus, 1758) / Stela Stoyanova, Elenka Georgieva, Eleonora Kovacheva, László Antal, Dóra Somogyi, Ifeanyi Emmanuel Uzochukwu, László Nagy, Krisztián Nyeste, Vesela Yancheva
Dátum:	2025
ISSN:	2305-6304
Megjegyzések:	This study evaluated the histopathological impact of three commonly used pesticides- pirimiphos-methyl, propamocarb hydrochloride, and 2,4-dichlorophenoxyacetic acid (2,4-D)-on the kidneys of common carp (Cyprinus carpio Linnaeus, 1758) after 96-h acute exposure. The histopathological analysis demonstrated that all three tested pesticides induced structural changes. The histopathological changes were assessed using a semiquantitative scoring system and categorised into circulatory, degenerative, proliferative, and inflammatory alterations. While circulatory alterations were absent in all treatments, clear and statistically significant degenerative, proliferative, and inflammatory responses were recorded, which escalated with increasing pesticide concentrations. Additionally, various statistical analyses were conducted to evaluate the lesions in kidney structure and function. Before the statistical analysis, normality and variance homogeneity were assessed using the Shapiro?Wilk and Levene's tests, respectively. Due to non-normal data distribution, non-parametric methods were applied. Hence, the non-parametric statistical methods showed distinct group-level differences in the kidney damage indices. The Kruskal?Wallis test revealed significant differences across treatments (p < 0.001), and Mann?Whitney U tests identified specific pairwise differences. The degenerative and proliferative lesions were most prominent in fish exposed to 2,4-D at 100 ?g/L (IK = 34), followed by pirimiphos-methyl and propamocarb hydrochloride. Inflammatory changes were mainly observed in the pirimiphos-methyl groups. The histopathological lesions were concentration-dependent, with 2,4-D causing irreversible renal damage at higher concentrations. These findings highlight the nephrotoxic risks posed by common pesticides and validate that the use of histopathological indices, combined with robust non-parametric testing, provides a reliable approach to evaluating organ-specific pesticide toxicity. These biomarkers offer sensitive early warning indicators of environmental risk, reinforcing the suitability of common carp as a model species for ecotoxicological assessment.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk common carp kidney histological biomarkers pesticides pollution
Megjelenés:	Toxics. - 13 : 7 (2025), p. 1-25. -
További szerzők:	Georgieva, Elenka Kovacheva, Eleonora Antal László (1984-) (hidrobiológus, biológus-ökológus) Somogyi Dóra (1996-) (hidrobiológus) Uzochukwu, Ifeanyi Emmanuel (1989-) (Environmental Scientist/Animal Scientist) Nagy László (2000-) (hidrobiológus) Nyeste Krisztián József (1993-) (hidrobiológus) Yancheva, Vesela
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