TY  - CONF
AU  - Kostić-Vuković, Jovana
AU  - Sunjog, Karolina
AU  - Kolarević, Stoimir
AU  - Smederevac-Lalić, Marija
AU  - Marković, Zoran
AU  - Skorić, Stefan
AU  - Jaćimović, Milica
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1694
AB  - Invasive alien fish species represent one of the greatest threats to the biodiversity and ecological status of freshwater ecosystems. Within their management, their application as bioindicators of pollution in monitoring programs should be considered. The aim of this study was to examine the
use of black bullhead Ameiurus melas (Rafinesque, 1820), invasive alien fish in Serbia, as a bioindicator of water genotoxicity by alkaline comet assay. Sampling was performed from June to September 2021 on Markovačko Lake, which is exposed to diffuse pollution from the application of pesticides on the surrounding agricultural land. Monitoring also included the assessment of water quality by basic physical and chemical parameters, as well as microbiological indicators of faecal pollution. Alkaline comet assay was performed on fish erythrocytes, on ten specimens per month. The study also included ten control fish from the recirculating aquaculture system (RAS), which were transferred from Markovačko Lake for breeding, and treatment of their erythrocytes with H2O2 as a positive control. Scoring of comets was performed by CometScore 2.0 software. The lowest level of DNA damage was recorded in the control group and the highest in the positive control group. August was the month with the lowest level of DNA damage, and September with the highest. Statistically significant differences were found between all groups indicating a high sensitivity of the alkaline comet assay to discriminate fine differences in the genotoxic potential of water. Knowing that black bullhead is highly abundant in stagnant waters and relatively easy to sample, this study draws additional attention to its use as a bioindicator of genotoxicity.
PB  - EUROPEAN ENVIRONMENTAL MUTAGENESIS & GENOMICS SOCIETY
C3  - 14th International Comet Assay Workshop (ICAW) & 50th meeting of the European Environmental Mutagen and Genomics Society (EEMGS)
T1  - Sensitivity of invasive alien fish in Serbia black bullhead Ameiurus melas (Rafinesque, 1820) as a bioindicator of genotoxicity
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1694
ER  - 

@conference{
author = "Kostić-Vuković, Jovana and Sunjog, Karolina and Kolarević, Stoimir and Smederevac-Lalić, Marija and Marković, Zoran and Skorić, Stefan and Jaćimović, Milica",
year = "2022",
abstract = "Invasive alien fish species represent one of the greatest threats to the biodiversity and ecological status of freshwater ecosystems. Within their management, their application as bioindicators of pollution in monitoring programs should be considered. The aim of this study was to examine the
use of black bullhead Ameiurus melas (Rafinesque, 1820), invasive alien fish in Serbia, as a bioindicator of water genotoxicity by alkaline comet assay. Sampling was performed from June to September 2021 on Markovačko Lake, which is exposed to diffuse pollution from the application of pesticides on the surrounding agricultural land. Monitoring also included the assessment of water quality by basic physical and chemical parameters, as well as microbiological indicators of faecal pollution. Alkaline comet assay was performed on fish erythrocytes, on ten specimens per month. The study also included ten control fish from the recirculating aquaculture system (RAS), which were transferred from Markovačko Lake for breeding, and treatment of their erythrocytes with H2O2 as a positive control. Scoring of comets was performed by CometScore 2.0 software. The lowest level of DNA damage was recorded in the control group and the highest in the positive control group. August was the month with the lowest level of DNA damage, and September with the highest. Statistically significant differences were found between all groups indicating a high sensitivity of the alkaline comet assay to discriminate fine differences in the genotoxic potential of water. Knowing that black bullhead is highly abundant in stagnant waters and relatively easy to sample, this study draws additional attention to its use as a bioindicator of genotoxicity.",
publisher = "EUROPEAN ENVIRONMENTAL MUTAGENESIS & GENOMICS SOCIETY",
journal = "14th International Comet Assay Workshop (ICAW) & 50th meeting of the European Environmental Mutagen and Genomics Society (EEMGS)",
title = "Sensitivity of invasive alien fish in Serbia black bullhead Ameiurus melas (Rafinesque, 1820) as a bioindicator of genotoxicity",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1694"
}

Kostić-Vuković, J., Sunjog, K., Kolarević, S., Smederevac-Lalić, M., Marković, Z., Skorić, S.,& Jaćimović, M.. (2022). Sensitivity of invasive alien fish in Serbia black bullhead Ameiurus melas (Rafinesque, 1820) as a bioindicator of genotoxicity. in 14th International Comet Assay Workshop (ICAW) & 50th meeting of the European Environmental Mutagen and Genomics Society (EEMGS)
EUROPEAN ENVIRONMENTAL MUTAGENESIS & GENOMICS SOCIETY..
https://hdl.handle.net/21.15107/rcub_rimsi_1694

Kostić-Vuković J, Sunjog K, Kolarević S, Smederevac-Lalić M, Marković Z, Skorić S, Jaćimović M. Sensitivity of invasive alien fish in Serbia black bullhead Ameiurus melas (Rafinesque, 1820) as a bioindicator of genotoxicity. in 14th International Comet Assay Workshop (ICAW) & 50th meeting of the European Environmental Mutagen and Genomics Society (EEMGS). 2022;.
https://hdl.handle.net/21.15107/rcub_rimsi_1694 .

Kostić-Vuković, Jovana, Sunjog, Karolina, Kolarević, Stoimir, Smederevac-Lalić, Marija, Marković, Zoran, Skorić, Stefan, Jaćimović, Milica, "Sensitivity of invasive alien fish in Serbia black bullhead Ameiurus melas (Rafinesque, 1820) as a bioindicator of genotoxicity" in 14th International Comet Assay Workshop (ICAW) & 50th meeting of the European Environmental Mutagen and Genomics Society (EEMGS) (2022),
https://hdl.handle.net/21.15107/rcub_rimsi_1694 .

TY  - JOUR
AU  - Milanović, Ziko
AU  - Dimic, Dusan
AU  - Žižić, Milan
AU  - Milenković, Dejan
AU  - Marković, Zoran
AU  - Avdović, Edina
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1504
AB  - Coumarin derivatives have proven beneficial biological activities, but the mechanism of their radical scavenging potency is not fully understood. In this study, the antiradical capacity of two newly synthesized 4,7-dihydroxycoumarin derivatives: (E)-3-(1-((3-hydroxy-4-methoxyphenyl)amino)-ethylidene)-2,4-dioxochroman-7-yl acetate (A-3OH) and (E)-3-(1-((4-hydroxy-3-methoxyphenyl)amino)ethylidene)-2,4-dioxochroman-7-yl acetate (A-4OH) towards HO center dot were examined by Electron Paramagnetic Resonance (EPR) Spectroscopy and Density Functional Theory (DFT). The compounds were fully characterized by the elemental microanalysis, IR, and NMR spectroscopies. The effect of pH on the acid-base equilibria is separately discussed and the predominant species at the physiological pH were determined. Several common mechanisms (Hydrogen Atom Transfer (HAT), Single-Electron Transfer followed by Proton Transfer (SET-PT), Sequential Proton Loss followed by Electron Transfer (SPLET), Radical Adduct Formation (RAF), and Intramolecular Hydrogen Atom Abstraction (iHAA)) of radical scavenging were investigated based on thermodynamic and kinetic parameters. EPR results indicated that both compounds significantly reduce the amount of present HO center dot. The results of the kinetic DFT study demonstrated that both compounds predominantly exhibit antiradical capacity through HAT and SPLET mechanisms. The estimated overall rate constants (k(overall)) proved that A-4OH shows better antioxidant capacity than A-3OH which is well-correlated with the results obtained by EPR measurement.
PB  - MDPI, Basel
T2  - International Journal of Molecular Sciences
T1  - Mechanism of Antiradical Activity of Newly Synthesized 4,7-Dihydroxycoumarin Derivatives-Experimental and Kinetic DFT Study
IS  - 24
VL  - 22
DO  - 10.3390/ijms222413273
ER  - 

@article{
author = "Milanović, Ziko and Dimic, Dusan and Žižić, Milan and Milenković, Dejan and Marković, Zoran and Avdović, Edina",
year = "2021",
abstract = "Coumarin derivatives have proven beneficial biological activities, but the mechanism of their radical scavenging potency is not fully understood. In this study, the antiradical capacity of two newly synthesized 4,7-dihydroxycoumarin derivatives: (E)-3-(1-((3-hydroxy-4-methoxyphenyl)amino)-ethylidene)-2,4-dioxochroman-7-yl acetate (A-3OH) and (E)-3-(1-((4-hydroxy-3-methoxyphenyl)amino)ethylidene)-2,4-dioxochroman-7-yl acetate (A-4OH) towards HO center dot were examined by Electron Paramagnetic Resonance (EPR) Spectroscopy and Density Functional Theory (DFT). The compounds were fully characterized by the elemental microanalysis, IR, and NMR spectroscopies. The effect of pH on the acid-base equilibria is separately discussed and the predominant species at the physiological pH were determined. Several common mechanisms (Hydrogen Atom Transfer (HAT), Single-Electron Transfer followed by Proton Transfer (SET-PT), Sequential Proton Loss followed by Electron Transfer (SPLET), Radical Adduct Formation (RAF), and Intramolecular Hydrogen Atom Abstraction (iHAA)) of radical scavenging were investigated based on thermodynamic and kinetic parameters. EPR results indicated that both compounds significantly reduce the amount of present HO center dot. The results of the kinetic DFT study demonstrated that both compounds predominantly exhibit antiradical capacity through HAT and SPLET mechanisms. The estimated overall rate constants (k(overall)) proved that A-4OH shows better antioxidant capacity than A-3OH which is well-correlated with the results obtained by EPR measurement.",
publisher = "MDPI, Basel",
journal = "International Journal of Molecular Sciences",
title = "Mechanism of Antiradical Activity of Newly Synthesized 4,7-Dihydroxycoumarin Derivatives-Experimental and Kinetic DFT Study",
number = "24",
volume = "22",
doi = "10.3390/ijms222413273"
}

Milanović, Z., Dimic, D., Žižić, M., Milenković, D., Marković, Z.,& Avdović, E.. (2021). Mechanism of Antiradical Activity of Newly Synthesized 4,7-Dihydroxycoumarin Derivatives-Experimental and Kinetic DFT Study. in International Journal of Molecular Sciences
MDPI, Basel., 22(24).
https://doi.org/10.3390/ijms222413273

Milanović Z, Dimic D, Žižić M, Milenković D, Marković Z, Avdović E. Mechanism of Antiradical Activity of Newly Synthesized 4,7-Dihydroxycoumarin Derivatives-Experimental and Kinetic DFT Study. in International Journal of Molecular Sciences. 2021;22(24).
doi:10.3390/ijms222413273 .

Milanović, Ziko, Dimic, Dusan, Žižić, Milan, Milenković, Dejan, Marković, Zoran, Avdović, Edina, "Mechanism of Antiradical Activity of Newly Synthesized 4,7-Dihydroxycoumarin Derivatives-Experimental and Kinetic DFT Study" in International Journal of Molecular Sciences, 22, no. 24 (2021),
https://doi.org/10.3390/ijms222413273 . .