Impact of anthropic activities on eukaryotic cells in cytotoxic test

Kasper, Natan; Barcelos, Rodrigo Patera; Mattos, Maicol de; Baroni, Suzymeire

doi:10.4136/ambi-agua.2107

Cited by 7 publications

(6 citation statements)

References 17 publications

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“…Several researches are carried out in order to measure the damage caused by anthropization, as well as to propose mitigation methods. Strategies, such as physicalchemical and biological analyzes of surface waters, have been reported in order to determine the contaminants present and assess possible toxicity index 1,2 .…”

Section: Introductionmentioning

confidence: 99%

Hospital waste: impact on Allium cepa cells

Campos,

Eckert,

Intiche

et al. 2024

Rev. Cont. Saúde

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The dumping of chemical substances, from urban, industrial and hospital waste, is the main responsible for the high concentrations of toxic substances in the environment. The adverse effects and risks that these substances may cause to the ecosystem have become the target of research in the scientific environment. The chemical substances present in tailings can be metabolized, stored as well as interact directly with the DNA of eukaryotic cells promoting pre-oncogenic events. To assess the impact of so-called emerging contaminants (EDC's) on the genome of eukaryotes, it is possible to use micronucleus (MN) and nuclear abnormalities (NA) tests through onion root (Allium cepa) meristematic cells. The objective of this research was to investigate the cellular, genotoxic and clastogenic alterations in onion root meristematic cells, through exposure in three hospital waste sampling efforts at three different times. The collected samples were analyzed in a gas chromatograph coupled to a mass spectrometer (GC-MS QP 2010) in order to qualify the constituents present in the tailings. By analyzing semi-permanent slides stained by the Shiff method, the nuclear and micronucleus abnormalities were computed in 3000 Allium cepa meristematic cells exposed to hospital waste for 96 hours. The results obtained show that the calculated MI (Mitotic Index) of the cells submitted to the waste were significantly lower when compared to the negative control group. There is also an important correlation between mitotic index and MN appearance. In the GC-MS analysis, several main peaks were observed and different retention times were identified. In treatment 1 T (3.44) and treatment 2, T (3.47), Propoxur was one of the products found that offers clastogenic potential as it is a synthetic carbamate, composed of aromatic ether and acetylcholinesterase inhibitor, widely used as a pesticide. The results show that the waste from the hospital under study has cytotoxic and genotoxic potential.

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Section: Introductionmentioning

confidence: 99%

Hospital waste: impact on Allium cepa cells

Campos,

Eckert,

Intiche

et al. 2024

Rev. Cont. Saúde

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“…According to Spadotto et al (2004), leaching of pesticides tends to contaminate surface water and, in some cases, also groundwater. Therefore, these water resources are characterized as the final destination for some pesticides, which leads to contamination of springs (Kasper et al, 2018;Ramos et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Cell damage in Danio rerio erythrocytes subjected to anthropized water

Lassen¹,

Fröhlich²,

Barcelos³

et al. 2021

Rev. ambiente água

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Several factors can lead to alterations of water quality in aquatic environments, leading to numerous consequences for the organisms that inhabit it. The water bodies located in the northwest region of Rio Grande do Sul periodically receive pollutants that may have genotoxic, cytotoxic and mutagenic properties, which affect the genetic integrity of organisms living there. This research analyzed the cytological responses of Danio rerio exposed to anthropized fresh water from the Ijuí River by the micronucleus method as well as by observing nuclear abnormalities in their erythrocytes. The data collected demonstrated higher values of erythrocytes with NA than with MN, suggesting that the cells are efficient in the repair mechanisms required when facing genotoxic substances.

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“…The presence of pollutants can prevent the development of many organisms, compromising the food chain, besides affecting the health of the population, since industrial, domestic and agricultural wastes contain compounds that variously have mutagenic, cytotoxic and/or genotoxic potential that are often not eliminated during the treatment process (Nielsen and Rank, 1994;Oliveira et al, 2011;Kasper et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the cytotoxic and genotoxic potential of waters of the Paraíba do Sul River Basin - RJ through the Allium cepa test system

et al. 2020

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The public water supply of the Rio de Janeiro metropolitan region is highly dependent on transposition from the Paraíba do Sul River: 70% of the water is diverted to the Piraí River and then passes through a series of other rivers and reservoirs, finally discharging in the Guandu River. During this path, the water is exposed to many sources of pollution. This makes the quality of the raw water that reaches the Guandu Treatment Station (WTS) highly vulnerable. This article reports the analysis of the cytogenotoxic potential of water samples collected at four different points along the Piraí River downstream from the transposition point, utilizing the Allium cepa test system. The samples were collected in two periods, the dry and wet seasons. The water at all four collection points presented some level of cytogenotoxicity, with the presence in the test cells of large nucleoli, multiple nucleoli, nuclear buds, lagging chromosomes, sticky chromosomes, karyorrhexis, cytoplasmic shrinkage and changes of the mitotic index. The samples collected during the dry season had a larger number of cells with alterations, indicating that the cytogenotoxic potential varies in function of the time of year, depending on the volume of contaminated effluents. The results obtained along with data from the Rio de Janeiro State Environmental Institute (INEA) for the same period reveal the importance of monitoring along with proper sanitation and sewage treatment, and that the presence of pollutants not only hampers water treatment, but also poses risks to organisms at different trophic levels, including humans.

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Impact of anthropic activities on eukaryotic cells in cytotoxic test

Cited by 7 publications

References 17 publications

Hospital waste: impact on Allium cepa cells

Hospital waste: impact on Allium cepa cells

Cell damage in Danio rerio erythrocytes subjected to anthropized water

Evaluation of the cytotoxic and genotoxic potential of waters of the Paraíba do Sul River Basin - RJ through the Allium cepa test system

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