TY  - JOUR
AU  - Pirković, Andrea
AU  - Vilotić, Aleksandra
AU  - Borozan, Sunčica
AU  - Nacka-Aleksić, Mirjana
AU  - Bojić-Trbojević, Žanka
AU  - Jovanović-Krivokuća, Milica
AU  - Battino, Maurizio
AU  - Giampieri, Francesca
AU  - Dekanski, Dragana
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2539
AB  - Olive-derived bioactive compound oleuropein was evaluated against damage induced by hydrogen peroxide in human trophoblast cells in vitro, by examining the changes in several markers implicated in oxidative stress interactions in the placenta. Trophoblast HTR-8/SVneo cells were preincubated with OLE at 10 and 100 µM and exposed to H2O2, as a model of oxidative stress. Protein and lipid peroxidation, as well as antioxidant enzymes’ activity, were determined spectrophotometrically, and DNA damage was evaluated by comet assay. iNOS protein expression was assessed by Western blot, while the mRNA expression of pro- and anti-apoptotic genes BAX and BCL2 and transcription factor NFE2L2, as well as cytokines IL-6 and TNF α were determined by qPCR. Oleuropein demonstrated cytoprotective effects against H2O2 in trophoblast cells by significantly improving the antioxidant status and preventing protein and lipid damage, as well as reducing the iNOS levels. OLE reduced the mRNA expression of IL-6 and TNF α, however, it did not influence the expression of NFE2L2 or the BAX/BCL2 ratio after H2O2 exposure. Oleuropein per se did not lead to any adverse effects in HTR-8/SVneo cells under the described conditions, confirming its safety in vitro. In conclusion, it significantly attenuated oxidative damage and restored antioxidant functioning, confirming its protective role in trophoblast. © 2023 by the authors.
PB  - MDPI
T2  - Antioxidants
T1  - Oleuropein Attenuates Oxidative Stress in Human Trophoblast Cells
VL  - 12
VL  - 1
SP  - 197
DO  - 10.3390/antiox12010197
ER  - 

@article{
author = "Pirković, Andrea and Vilotić, Aleksandra and Borozan, Sunčica and Nacka-Aleksić, Mirjana and Bojić-Trbojević, Žanka and Jovanović-Krivokuća, Milica and Battino, Maurizio and Giampieri, Francesca and Dekanski, Dragana",
year = "2023",
abstract = "Olive-derived bioactive compound oleuropein was evaluated against damage induced by hydrogen peroxide in human trophoblast cells in vitro, by examining the changes in several markers implicated in oxidative stress interactions in the placenta. Trophoblast HTR-8/SVneo cells were preincubated with OLE at 10 and 100 µM and exposed to H2O2, as a model of oxidative stress. Protein and lipid peroxidation, as well as antioxidant enzymes’ activity, were determined spectrophotometrically, and DNA damage was evaluated by comet assay. iNOS protein expression was assessed by Western blot, while the mRNA expression of pro- and anti-apoptotic genes BAX and BCL2 and transcription factor NFE2L2, as well as cytokines IL-6 and TNF α were determined by qPCR. Oleuropein demonstrated cytoprotective effects against H2O2 in trophoblast cells by significantly improving the antioxidant status and preventing protein and lipid damage, as well as reducing the iNOS levels. OLE reduced the mRNA expression of IL-6 and TNF α, however, it did not influence the expression of NFE2L2 or the BAX/BCL2 ratio after H2O2 exposure. Oleuropein per se did not lead to any adverse effects in HTR-8/SVneo cells under the described conditions, confirming its safety in vitro. In conclusion, it significantly attenuated oxidative damage and restored antioxidant functioning, confirming its protective role in trophoblast. © 2023 by the authors.",
publisher = "MDPI",
journal = "Antioxidants",
title = "Oleuropein Attenuates Oxidative Stress in Human Trophoblast Cells",
volume = "12, 1",
pages = "197",
doi = "10.3390/antiox12010197"
}

Pirković, A., Vilotić, A., Borozan, S., Nacka-Aleksić, M., Bojić-Trbojević, Ž., Jovanović-Krivokuća, M., Battino, M., Giampieri, F.,& Dekanski, D.. (2023). Oleuropein Attenuates Oxidative Stress in Human Trophoblast Cells. in Antioxidants
MDPI., 12, 197.
https://doi.org/10.3390/antiox12010197

Pirković A, Vilotić A, Borozan S, Nacka-Aleksić M, Bojić-Trbojević Ž, Jovanović-Krivokuća M, Battino M, Giampieri F, Dekanski D. Oleuropein Attenuates Oxidative Stress in Human Trophoblast Cells. in Antioxidants. 2023;12:197.
doi:10.3390/antiox12010197 .

Pirković, Andrea, Vilotić, Aleksandra, Borozan, Sunčica, Nacka-Aleksić, Mirjana, Bojić-Trbojević, Žanka, Jovanović-Krivokuća, Milica, Battino, Maurizio, Giampieri, Francesca, Dekanski, Dragana, "Oleuropein Attenuates Oxidative Stress in Human Trophoblast Cells" in Antioxidants, 12 (2023):197,
https://doi.org/10.3390/antiox12010197 . .

TY  - JOUR
AU  - Kostić, Sanja
AU  - Vilotić, Aleksandra
AU  - Pirković, Andrea
AU  - Dekanski, Dragana
AU  - Borozan, Sunčica
AU  - Nacka-Aleksić, Mirjana
AU  - Vrzić-Petronijević, Svetlana
AU  - Jovanović Krivokuća, Milica
PY  - 2022
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2842
AB  - Caffeic acid is highlighted as one of the major phenolic compounds present in foods with known antioxidant activity. This phenolic is among commonly consumed substances in everyday diet of pregnant women. However, there is not enough information on its effects during pregnancy, especially the most vulnerable early stage. Extravillous trophoblast cells are specific cells of the placenta that come in direct contact with maternal uterine tissue. Through this study we investigated the cytoprotective effects of caffeic acid on H2O2-induced oxidative damage in first trimester extravillous trophoblast cell line HTR-8/SVneo. Investigated concentrations (1–100 μM) of caffeic acid showed neither cytotoxic nor genotoxic effects on HTR-8/SVneo cells. The treatment with caffeic acid 100 μM significantly increased the percentage of cells in G2/M phase of the cell cycle, compared to non-treated cells. Pretreatment with caffeic acid (10 and 100 μM) attenuated oxidative DNA damage significantly, reduced cytotoxicity, protein and lipid peroxidation, and restored antioxidant capacity in trophoblast cells following H2O2 exposure. This beneficial outcome is probably mediated by the augmentation of GSH and effective ROS scavenging by caffeic acid. These promising results require further investigations to reveal the additional mechanisms/pathways and confirmation through studies in vivo.
PB  - Elsevier
T2  - Food and Chemical Toxicology
T1  - Caffeic acid protects human trophoblast HTR-8/SVneo cells from H2O2-induced oxidative stress and genotoxicity
VL  - 163
SP  - 112993
DO  - 10.1016/j.fct.2022.112993
ER  - 

@article{
author = "Kostić, Sanja and Vilotić, Aleksandra and Pirković, Andrea and Dekanski, Dragana and Borozan, Sunčica and Nacka-Aleksić, Mirjana and Vrzić-Petronijević, Svetlana and Jovanović Krivokuća, Milica",
year = "2022",
abstract = "Caffeic acid is highlighted as one of the major phenolic compounds present in foods with known antioxidant activity. This phenolic is among commonly consumed substances in everyday diet of pregnant women. However, there is not enough information on its effects during pregnancy, especially the most vulnerable early stage. Extravillous trophoblast cells are specific cells of the placenta that come in direct contact with maternal uterine tissue. Through this study we investigated the cytoprotective effects of caffeic acid on H2O2-induced oxidative damage in first trimester extravillous trophoblast cell line HTR-8/SVneo. Investigated concentrations (1–100 μM) of caffeic acid showed neither cytotoxic nor genotoxic effects on HTR-8/SVneo cells. The treatment with caffeic acid 100 μM significantly increased the percentage of cells in G2/M phase of the cell cycle, compared to non-treated cells. Pretreatment with caffeic acid (10 and 100 μM) attenuated oxidative DNA damage significantly, reduced cytotoxicity, protein and lipid peroxidation, and restored antioxidant capacity in trophoblast cells following H2O2 exposure. This beneficial outcome is probably mediated by the augmentation of GSH and effective ROS scavenging by caffeic acid. These promising results require further investigations to reveal the additional mechanisms/pathways and confirmation through studies in vivo.",
publisher = "Elsevier",
journal = "Food and Chemical Toxicology",
title = "Caffeic acid protects human trophoblast HTR-8/SVneo cells from H2O2-induced oxidative stress and genotoxicity",
volume = "163",
pages = "112993",
doi = "10.1016/j.fct.2022.112993"
}

Kostić, S., Vilotić, A., Pirković, A., Dekanski, D., Borozan, S., Nacka-Aleksić, M., Vrzić-Petronijević, S.,& Jovanović Krivokuća, M.. (2022). Caffeic acid protects human trophoblast HTR-8/SVneo cells from H2O2-induced oxidative stress and genotoxicity. in Food and Chemical Toxicology
Elsevier., 163, 112993.
https://doi.org/10.1016/j.fct.2022.112993

Kostić S, Vilotić A, Pirković A, Dekanski D, Borozan S, Nacka-Aleksić M, Vrzić-Petronijević S, Jovanović Krivokuća M. Caffeic acid protects human trophoblast HTR-8/SVneo cells from H2O2-induced oxidative stress and genotoxicity. in Food and Chemical Toxicology. 2022;163:112993.
doi:10.1016/j.fct.2022.112993 .

Kostić, Sanja, Vilotić, Aleksandra, Pirković, Andrea, Dekanski, Dragana, Borozan, Sunčica, Nacka-Aleksić, Mirjana, Vrzić-Petronijević, Svetlana, Jovanović Krivokuća, Milica, "Caffeic acid protects human trophoblast HTR-8/SVneo cells from H2O2-induced oxidative stress and genotoxicity" in Food and Chemical Toxicology, 163 (2022):112993,
https://doi.org/10.1016/j.fct.2022.112993 . .

TY  - JOUR
AU  - Pirković-Čabarkapa, Andrea
AU  - Živković, Lada
AU  - Zlatković-Švenda, M.
AU  - Borozan, Sunčica
AU  - Topalović, Dijana
AU  - Dekanski, Dragana
AU  - Bruić, Marija
AU  - Bajić, Vladan
AU  - Radak-Perović, Marija
AU  - Spremo-Potparević, Biljana
PY  - 2020
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1849
AB  - Oxidative stress and inflammation are DNA instability factors for rheumatoid arthritis (RA) patients. The aims of this study were to evaluate cytogenetic alterations in Peripheral Blood Lymphocytes (PBL) in two groups of RA patients: the early and the long-term RA group; and to examine potential of concomitant treatment with Methotrexate (MTX) and Dry olive leaf extract (DOLE) against cytogenetic damage in RA patients after a 3-weeks treatment. A total of 32 RA patients and 10 healthy individuals were included. RA patients were equally divided into four groups: two groups with early phase RA (one treated with MTX alone, the other in combination with DOLE); and two long-term phase RA groups (group with active disease and group with low disease activity)-both treated with MTX and DOLE combination. PBL cultures were screened for chromosome aberrations and micronuclei frequencies. Significantly increased frequencies of micronuclei were shown in active phase RA disease (both early and long-term) but not in the group with low disease activity, as compared to controls. Chromosome aberrations were detected for all 4 RA groups. The highest frequencies of micronuclei and chromosome aberrations were found in the long-term active RA group. After 3 weeks-treatment, there were no significant decrease of the micronuclei frequencies compared to baseline, although they were reduced in all RA groups, except for the group with the long-term active disease. High level of cytogenetic damage in RA patients was concordant with duration and activity of the RA disease. At 3 weeks of therapy, neither the combined treatment (MTX+DOLE), nor MTX alone did not affect the frequency of micronuclei formation.
T2  - Genetika
T1  - Cytogenetic alterations in rheumatoid arthritis patients treated with methotrexate and dry olive leaf extract
VL  - 52
IS  - 1
SP  - 67
EP  - 80
DO  - 10.2298/GENSR2001067P
ER  - 

@article{
author = "Pirković-Čabarkapa, Andrea and Živković, Lada and Zlatković-Švenda, M. and Borozan, Sunčica and Topalović, Dijana and Dekanski, Dragana and Bruić, Marija and Bajić, Vladan and Radak-Perović, Marija and Spremo-Potparević, Biljana",
year = "2020",
abstract = "Oxidative stress and inflammation are DNA instability factors for rheumatoid arthritis (RA) patients. The aims of this study were to evaluate cytogenetic alterations in Peripheral Blood Lymphocytes (PBL) in two groups of RA patients: the early and the long-term RA group; and to examine potential of concomitant treatment with Methotrexate (MTX) and Dry olive leaf extract (DOLE) against cytogenetic damage in RA patients after a 3-weeks treatment. A total of 32 RA patients and 10 healthy individuals were included. RA patients were equally divided into four groups: two groups with early phase RA (one treated with MTX alone, the other in combination with DOLE); and two long-term phase RA groups (group with active disease and group with low disease activity)-both treated with MTX and DOLE combination. PBL cultures were screened for chromosome aberrations and micronuclei frequencies. Significantly increased frequencies of micronuclei were shown in active phase RA disease (both early and long-term) but not in the group with low disease activity, as compared to controls. Chromosome aberrations were detected for all 4 RA groups. The highest frequencies of micronuclei and chromosome aberrations were found in the long-term active RA group. After 3 weeks-treatment, there were no significant decrease of the micronuclei frequencies compared to baseline, although they were reduced in all RA groups, except for the group with the long-term active disease. High level of cytogenetic damage in RA patients was concordant with duration and activity of the RA disease. At 3 weeks of therapy, neither the combined treatment (MTX+DOLE), nor MTX alone did not affect the frequency of micronuclei formation.",
journal = "Genetika",
title = "Cytogenetic alterations in rheumatoid arthritis patients treated with methotrexate and dry olive leaf extract",
volume = "52",
number = "1",
pages = "67-80",
doi = "10.2298/GENSR2001067P"
}

Pirković-Čabarkapa, A., Živković, L., Zlatković-Švenda, M., Borozan, S., Topalović, D., Dekanski, D., Bruić, M., Bajić, V., Radak-Perović, M.,& Spremo-Potparević, B.. (2020). Cytogenetic alterations in rheumatoid arthritis patients treated with methotrexate and dry olive leaf extract. in Genetika, 52(1), 67-80.
https://doi.org/10.2298/GENSR2001067P

Pirković-Čabarkapa A, Živković L, Zlatković-Švenda M, Borozan S, Topalović D, Dekanski D, Bruić M, Bajić V, Radak-Perović M, Spremo-Potparević B. Cytogenetic alterations in rheumatoid arthritis patients treated with methotrexate and dry olive leaf extract. in Genetika. 2020;52(1):67-80.
doi:10.2298/GENSR2001067P .

Pirković-Čabarkapa, Andrea, Živković, Lada, Zlatković-Švenda, M., Borozan, Sunčica, Topalović, Dijana, Dekanski, Dragana, Bruić, Marija, Bajić, Vladan, Radak-Perović, Marija, Spremo-Potparević, Biljana, "Cytogenetic alterations in rheumatoid arthritis patients treated with methotrexate and dry olive leaf extract" in Genetika, 52, no. 1 (2020):67-80,
https://doi.org/10.2298/GENSR2001067P . .

TY  - JOUR
AU  - Topalović, Dijana
AU  - Dekanski, Dragana
AU  - Spremo-Potparević, Biljana
AU  - Pirković, Andrea
AU  - Borozan, Sunčica
AU  - Bajić, Vladan
AU  - Stojanović, Danilo
AU  - Giampieri, Francesca
AU  - Gasparrini, Massimiliano
AU  - Živković, Lada
PY  - 2019
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1791
AB  - Phenolic groups of steroidal or nonsteroidal estrogens can redox cycle, leading to oxidative stress, where creation of reactive oxygen species are recognized as the main mechanism of their DNA damage properties. Dry olive (Olea europaea L.) leaf extract is known to contain bioactive and antioxidative components and to have an ability to modulate the effects of various oxidants in cells. The main goal of this study was to investigate antigenotoxic potential of a standardized dry olive leaf extract on DNA damage induced by 17 beta-estradiol and diethylstilbestrol in human whole blood cells in vitro, using comet assay. Our results indicated that both hormones showed a genotoxic effect at a concentration of 100 mu M (P < 0.05, n = 6). Dry olive leaf extract was efficient in reducing number of cells with estrogen-induced DNA damage at tested concentrations (0.125, 0.5 and 1 mg/mL) (P < 0.05, n = 6) and under two experimental protocols, pre-treatment and post-treatment, exhibiting antigenotoxic properties. Analysis of antioxidant properties of the extract revealed moderate ABTS radical scavenging properties and reducing power. Overall, our results suggested that the protective potential of dry olive leaf extract could arise from the synergistic effect of its scavenging activity and enhancement of the cells antioxidant capacity.
PB  - Elsevier, Amsterdam
T2  - Mutation Research-Genetic Toxicology and Environmental Mutagenesis
T1  - Dry olive leaf extract attenuates DNA damage induced by estradiol and diethylstilbestrol in human peripheral blood cells in vitro
VL  - 845
SP  - UNSP 402993
DO  - 10.1016/j.mrgentox.2018.12.001
ER  - 

@article{
author = "Topalović, Dijana and Dekanski, Dragana and Spremo-Potparević, Biljana and Pirković, Andrea and Borozan, Sunčica and Bajić, Vladan and Stojanović, Danilo and Giampieri, Francesca and Gasparrini, Massimiliano and Živković, Lada",
year = "2019",
abstract = "Phenolic groups of steroidal or nonsteroidal estrogens can redox cycle, leading to oxidative stress, where creation of reactive oxygen species are recognized as the main mechanism of their DNA damage properties. Dry olive (Olea europaea L.) leaf extract is known to contain bioactive and antioxidative components and to have an ability to modulate the effects of various oxidants in cells. The main goal of this study was to investigate antigenotoxic potential of a standardized dry olive leaf extract on DNA damage induced by 17 beta-estradiol and diethylstilbestrol in human whole blood cells in vitro, using comet assay. Our results indicated that both hormones showed a genotoxic effect at a concentration of 100 mu M (P < 0.05, n = 6). Dry olive leaf extract was efficient in reducing number of cells with estrogen-induced DNA damage at tested concentrations (0.125, 0.5 and 1 mg/mL) (P < 0.05, n = 6) and under two experimental protocols, pre-treatment and post-treatment, exhibiting antigenotoxic properties. Analysis of antioxidant properties of the extract revealed moderate ABTS radical scavenging properties and reducing power. Overall, our results suggested that the protective potential of dry olive leaf extract could arise from the synergistic effect of its scavenging activity and enhancement of the cells antioxidant capacity.",
publisher = "Elsevier, Amsterdam",
journal = "Mutation Research-Genetic Toxicology and Environmental Mutagenesis",
title = "Dry olive leaf extract attenuates DNA damage induced by estradiol and diethylstilbestrol in human peripheral blood cells in vitro",
volume = "845",
pages = "UNSP 402993",
doi = "10.1016/j.mrgentox.2018.12.001"
}

Topalović, D., Dekanski, D., Spremo-Potparević, B., Pirković, A., Borozan, S., Bajić, V., Stojanović, D., Giampieri, F., Gasparrini, M.,& Živković, L.. (2019). Dry olive leaf extract attenuates DNA damage induced by estradiol and diethylstilbestrol in human peripheral blood cells in vitro. in Mutation Research-Genetic Toxicology and Environmental Mutagenesis
Elsevier, Amsterdam., 845, UNSP 402993.
https://doi.org/10.1016/j.mrgentox.2018.12.001

Topalović D, Dekanski D, Spremo-Potparević B, Pirković A, Borozan S, Bajić V, Stojanović D, Giampieri F, Gasparrini M, Živković L. Dry olive leaf extract attenuates DNA damage induced by estradiol and diethylstilbestrol in human peripheral blood cells in vitro. in Mutation Research-Genetic Toxicology and Environmental Mutagenesis. 2019;845:UNSP 402993.
doi:10.1016/j.mrgentox.2018.12.001 .

Topalović, Dijana, Dekanski, Dragana, Spremo-Potparević, Biljana, Pirković, Andrea, Borozan, Sunčica, Bajić, Vladan, Stojanović, Danilo, Giampieri, Francesca, Gasparrini, Massimiliano, Živković, Lada, "Dry olive leaf extract attenuates DNA damage induced by estradiol and diethylstilbestrol in human peripheral blood cells in vitro" in Mutation Research-Genetic Toxicology and Environmental Mutagenesis, 845 (2019):UNSP 402993,
https://doi.org/10.1016/j.mrgentox.2018.12.001 . .

TY  - JOUR
AU  - Topalović, Dijana
AU  - Dekanski, Dragana
AU  - Spremo-Potparević, Biljana
AU  - Đelić, Ninoslav
AU  - Bajić, Vladan
AU  - Živković, Lada
PY  - 2018
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1619
AB  - Harmful effects of elevated levels of catecholamines are mediated by various mechanisms, including gene transcription and formation of oxidation products. The aim of this study was to see whether the molecular mechanisms underlying the damaging action of adrenaline on DNA are mediated by reactive oxygen species (ROS). To do that, we exposed human whole blood cells to 10 mu mol L-1 adrenaline or 50 mu mol L-1 H2O2 (used as positive control) that were separately pre-treated or post-treated with 500 mu mol L-1 of quercetin, a scavenger of free radicals. Quercetin significantly reduced DNA damage in both pre- and post-treatment protocols, which suggests that adrenaline mainly acts via the production of ROS. This mechanism is also supported by gradual lowering of adrenaline and H2O2-induced DNA damage 15, 30, 45, and 60 min after treatment. Our results clearly show that DNA repair mechanisms are rather effective against ROS-mediated DNA damage induced by adrenaline.
PB  - Inst Medical Research & Occupational Health, Zagreb
T2  - Arhiv Za Higijenu Rada I Toksikologiju-Archives of Industrial Hygiene and Toxicology
T1  - Assessment of adrenaline-induced DNA damage in whole blood cells with the comet assay
VL  - 69
IS  - 4
SP  - 304
EP  - 308
DO  - 10.2478/aiht-2018-69-3154
ER  - 

@article{
author = "Topalović, Dijana and Dekanski, Dragana and Spremo-Potparević, Biljana and Đelić, Ninoslav and Bajić, Vladan and Živković, Lada",
year = "2018",
abstract = "Harmful effects of elevated levels of catecholamines are mediated by various mechanisms, including gene transcription and formation of oxidation products. The aim of this study was to see whether the molecular mechanisms underlying the damaging action of adrenaline on DNA are mediated by reactive oxygen species (ROS). To do that, we exposed human whole blood cells to 10 mu mol L-1 adrenaline or 50 mu mol L-1 H2O2 (used as positive control) that were separately pre-treated or post-treated with 500 mu mol L-1 of quercetin, a scavenger of free radicals. Quercetin significantly reduced DNA damage in both pre- and post-treatment protocols, which suggests that adrenaline mainly acts via the production of ROS. This mechanism is also supported by gradual lowering of adrenaline and H2O2-induced DNA damage 15, 30, 45, and 60 min after treatment. Our results clearly show that DNA repair mechanisms are rather effective against ROS-mediated DNA damage induced by adrenaline.",
publisher = "Inst Medical Research & Occupational Health, Zagreb",
journal = "Arhiv Za Higijenu Rada I Toksikologiju-Archives of Industrial Hygiene and Toxicology",
title = "Assessment of adrenaline-induced DNA damage in whole blood cells with the comet assay",
volume = "69",
number = "4",
pages = "304-308",
doi = "10.2478/aiht-2018-69-3154"
}

Topalović, D., Dekanski, D., Spremo-Potparević, B., Đelić, N., Bajić, V.,& Živković, L.. (2018). Assessment of adrenaline-induced DNA damage in whole blood cells with the comet assay. in Arhiv Za Higijenu Rada I Toksikologiju-Archives of Industrial Hygiene and Toxicology
Inst Medical Research & Occupational Health, Zagreb., 69(4), 304-308.
https://doi.org/10.2478/aiht-2018-69-3154

Topalović D, Dekanski D, Spremo-Potparević B, Đelić N, Bajić V, Živković L. Assessment of adrenaline-induced DNA damage in whole blood cells with the comet assay. in Arhiv Za Higijenu Rada I Toksikologiju-Archives of Industrial Hygiene and Toxicology. 2018;69(4):304-308.
doi:10.2478/aiht-2018-69-3154 .

Topalović, Dijana, Dekanski, Dragana, Spremo-Potparević, Biljana, Đelić, Ninoslav, Bajić, Vladan, Živković, Lada, "Assessment of adrenaline-induced DNA damage in whole blood cells with the comet assay" in Arhiv Za Higijenu Rada I Toksikologiju-Archives of Industrial Hygiene and Toxicology, 69, no. 4 (2018):304-308,
https://doi.org/10.2478/aiht-2018-69-3154 . .

TY  - JOUR
AU  - Čabarkapa, Andrea
AU  - Živković, Lada
AU  - Borozan, Sunčica
AU  - Zlatkovic-Svenda, Mirjana
AU  - Dekanski, Dragana
AU  - Jancić, Ivan
AU  - Radak-Perović, Marija
AU  - Bajić, Vladan
AU  - Spremo-Potparević, Biljana
PY  - 2016
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1418
AB  - The effects of co-administration of dry olive leaf extract (DOLE) with standard methotrexate (MTX) therapy on the parameters of cell damage and inflammation in patients with early and long-term rheumatoid arthritis (RA) were evaluated at baseline, 3 and 6weeks. Patients were assigned to groups: the early phase RA group on MTX monotherapy (E MTX), and the two RA groups that received co-treatment with DOLE and MTX: early (E MTX+DOLE) and long-term phase patients (L-t MTX+ DOLE). Baseline values indicated increased parameters of cell damage and disruption of redox balance in all groups. After three weeks the E MTX+DOLE group maintained high catalase activity, exhibited decrease of lipid peroxidation and protein damage indicatorsthiols and nitrites, while levels of DNA damage and pro-inflammatory interleukin-6 were significantly reduced. In E MTX group catalase activity remained unaltered while significant lipid peroxidation and DNA damage reductions were seen only after six weeks. L-t MTX+DOLE group showed only modest alterations of cell damage parameters during six weeks. Combined administration of DOLE with MTX contributes to faster reduction of cell damage, restores oxidative balance and improves interleukin-6 suppression during high disease activity in early phase RA, but not in long term patients. Copyright
PB  - Wiley-Blackwell, Hoboken
T2  - Phytotherapy Research
T1  - Dry Olive Leaf Extract in Combination with Methotrexate Reduces Cell Damage in Early Rheumatoid Arthritis PatientsA Pilot Study
VL  - 30
IS  - 10
SP  - 1615
EP  - 1623
DO  - 10.1002/ptr.5662
ER  - 

@article{
author = "Čabarkapa, Andrea and Živković, Lada and Borozan, Sunčica and Zlatkovic-Svenda, Mirjana and Dekanski, Dragana and Jancić, Ivan and Radak-Perović, Marija and Bajić, Vladan and Spremo-Potparević, Biljana",
year = "2016",
abstract = "The effects of co-administration of dry olive leaf extract (DOLE) with standard methotrexate (MTX) therapy on the parameters of cell damage and inflammation in patients with early and long-term rheumatoid arthritis (RA) were evaluated at baseline, 3 and 6weeks. Patients were assigned to groups: the early phase RA group on MTX monotherapy (E MTX), and the two RA groups that received co-treatment with DOLE and MTX: early (E MTX+DOLE) and long-term phase patients (L-t MTX+ DOLE). Baseline values indicated increased parameters of cell damage and disruption of redox balance in all groups. After three weeks the E MTX+DOLE group maintained high catalase activity, exhibited decrease of lipid peroxidation and protein damage indicatorsthiols and nitrites, while levels of DNA damage and pro-inflammatory interleukin-6 were significantly reduced. In E MTX group catalase activity remained unaltered while significant lipid peroxidation and DNA damage reductions were seen only after six weeks. L-t MTX+DOLE group showed only modest alterations of cell damage parameters during six weeks. Combined administration of DOLE with MTX contributes to faster reduction of cell damage, restores oxidative balance and improves interleukin-6 suppression during high disease activity in early phase RA, but not in long term patients. Copyright",
publisher = "Wiley-Blackwell, Hoboken",
journal = "Phytotherapy Research",
title = "Dry Olive Leaf Extract in Combination with Methotrexate Reduces Cell Damage in Early Rheumatoid Arthritis PatientsA Pilot Study",
volume = "30",
number = "10",
pages = "1615-1623",
doi = "10.1002/ptr.5662"
}

Čabarkapa, A., Živković, L., Borozan, S., Zlatkovic-Svenda, M., Dekanski, D., Jancić, I., Radak-Perović, M., Bajić, V.,& Spremo-Potparević, B.. (2016). Dry Olive Leaf Extract in Combination with Methotrexate Reduces Cell Damage in Early Rheumatoid Arthritis PatientsA Pilot Study. in Phytotherapy Research
Wiley-Blackwell, Hoboken., 30(10), 1615-1623.
https://doi.org/10.1002/ptr.5662

Čabarkapa A, Živković L, Borozan S, Zlatkovic-Svenda M, Dekanski D, Jancić I, Radak-Perović M, Bajić V, Spremo-Potparević B. Dry Olive Leaf Extract in Combination with Methotrexate Reduces Cell Damage in Early Rheumatoid Arthritis PatientsA Pilot Study. in Phytotherapy Research. 2016;30(10):1615-1623.
doi:10.1002/ptr.5662 .

Čabarkapa, Andrea, Živković, Lada, Borozan, Sunčica, Zlatkovic-Svenda, Mirjana, Dekanski, Dragana, Jancić, Ivan, Radak-Perović, Marija, Bajić, Vladan, Spremo-Potparević, Biljana, "Dry Olive Leaf Extract in Combination with Methotrexate Reduces Cell Damage in Early Rheumatoid Arthritis PatientsA Pilot Study" in Phytotherapy Research, 30, no. 10 (2016):1615-1623,
https://doi.org/10.1002/ptr.5662 . .

TY  - JOUR
AU  - Žukovec-Topalović, Dijana
AU  - Živković, Lada
AU  - Čabarkapa, Andrea
AU  - Đelić, Ninoslav
AU  - Bajić, Vladan
AU  - Dekanski, Dragana
AU  - Spremo-Potparević, Biljana
PY  - 2015
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1177
AB  - The thyroid hormones change the rate of basal metabolism, modulating the consumption of oxygen and causing production of reactive oxygen species, which leads to the development of oxidative stress and DNA strand breaks. Olive (Olea europaea L.) leaf contains many potentially bioactive compounds, making it one of the most potent natural antioxidants. The objective of this study was to evaluate the genotoxicity of L-thyroxine and to investigate antioxidative and antigenotoxic potential of the standardized oleuropein-rich dry olive leaf extract (DOLE) against hydrogen peroxide and L-thyroxine-induced DNA damage in human peripheral blood leukocytes by using the comet assay. Various concentrations of the extract were tested with both DNA damage inducers, under two different experimental conditions, pretreatment and posttreatment. Results indicate that L-thyroxine exhibited genotoxic effect and that DOLE displayed protective effect against thyroxine-induced genotoxicity. The number of cells with DNA damage, was significantly reduced, in both pretreated and posttreated samples (P < 0.05). Comparing the beneficial effect of all tested concentrations of DOLE, in both experimental protocols, it appears that extract was more effective in reducing DNA damage in the pretreatment, exhibiting protective role against L-thyroxine effect. This feature of DOLE can be explained by its capacity to act as potent free radical scavenger.
PB  - Hindawi Ltd, London
T2  - Oxidative Medicine and Cellular Longevity
T1  - Dry Olive Leaf Extract Counteracts L-Thyroxine-Induced Genotoxicity in Human Peripheral Blood Leukocytes In Vitro
VL  - 2015
SP  - 762192
DO  - 10.1155/2015/762192
ER  - 

@article{
author = "Žukovec-Topalović, Dijana and Živković, Lada and Čabarkapa, Andrea and Đelić, Ninoslav and Bajić, Vladan and Dekanski, Dragana and Spremo-Potparević, Biljana",
year = "2015",
abstract = "The thyroid hormones change the rate of basal metabolism, modulating the consumption of oxygen and causing production of reactive oxygen species, which leads to the development of oxidative stress and DNA strand breaks. Olive (Olea europaea L.) leaf contains many potentially bioactive compounds, making it one of the most potent natural antioxidants. The objective of this study was to evaluate the genotoxicity of L-thyroxine and to investigate antioxidative and antigenotoxic potential of the standardized oleuropein-rich dry olive leaf extract (DOLE) against hydrogen peroxide and L-thyroxine-induced DNA damage in human peripheral blood leukocytes by using the comet assay. Various concentrations of the extract were tested with both DNA damage inducers, under two different experimental conditions, pretreatment and posttreatment. Results indicate that L-thyroxine exhibited genotoxic effect and that DOLE displayed protective effect against thyroxine-induced genotoxicity. The number of cells with DNA damage, was significantly reduced, in both pretreated and posttreated samples (P < 0.05). Comparing the beneficial effect of all tested concentrations of DOLE, in both experimental protocols, it appears that extract was more effective in reducing DNA damage in the pretreatment, exhibiting protective role against L-thyroxine effect. This feature of DOLE can be explained by its capacity to act as potent free radical scavenger.",
publisher = "Hindawi Ltd, London",
journal = "Oxidative Medicine and Cellular Longevity",
title = "Dry Olive Leaf Extract Counteracts L-Thyroxine-Induced Genotoxicity in Human Peripheral Blood Leukocytes In Vitro",
volume = "2015",
pages = "762192",
doi = "10.1155/2015/762192"
}

Žukovec-Topalović, D., Živković, L., Čabarkapa, A., Đelić, N., Bajić, V., Dekanski, D.,& Spremo-Potparević, B.. (2015). Dry Olive Leaf Extract Counteracts L-Thyroxine-Induced Genotoxicity in Human Peripheral Blood Leukocytes In Vitro. in Oxidative Medicine and Cellular Longevity
Hindawi Ltd, London., 2015, 762192.
https://doi.org/10.1155/2015/762192

Žukovec-Topalović D, Živković L, Čabarkapa A, Đelić N, Bajić V, Dekanski D, Spremo-Potparević B. Dry Olive Leaf Extract Counteracts L-Thyroxine-Induced Genotoxicity in Human Peripheral Blood Leukocytes In Vitro. in Oxidative Medicine and Cellular Longevity. 2015;2015:762192.
doi:10.1155/2015/762192 .

Žukovec-Topalović, Dijana, Živković, Lada, Čabarkapa, Andrea, Đelić, Ninoslav, Bajić, Vladan, Dekanski, Dragana, Spremo-Potparević, Biljana, "Dry Olive Leaf Extract Counteracts L-Thyroxine-Induced Genotoxicity in Human Peripheral Blood Leukocytes In Vitro" in Oxidative Medicine and Cellular Longevity, 2015 (2015):762192,
https://doi.org/10.1155/2015/762192 . .

TY  - JOUR
AU  - Čabarkapa, Andrea
AU  - Živković, Lada
AU  - Žukovec, Dijana
AU  - Đelić, Ninoslav
AU  - Bajić, Vladan
AU  - Dekanski, Dragana
AU  - Spremo-Potparević, Biljana
PY  - 2014
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1104
AB  - Excessive release of stress hormone adrenaline is accompanied by generation of reactive oxygen species which may cause disruption of DNA integrity leading to cancer and age-related disorders. Phenolic-rich plant product dry olive leaf extract (DOLE) is known to modulate effects of various oxidants in human cells. The aim was to evaluate the effect of commercial DOLE against adrenaline induced DNA damage in human leukocytes by using comet assay. Peripheral blood leukocytes from 6 healthy subjects were treated in vitro with three final concentrations of DOLE (0.125, 0.5, and 1 mg/mL) for 30 min at 37 degrees C under two different protocols, pretreatment and post-treatment. Protective effect of DOLE was assessed from its ability to attenuate formation of DNA lesions induced by adrenaline. Compared to cells exposed only to adrenaline, DOLE displayed significant reduction (P < 0.001) of DNA damage at all three concentrations and under both experimental protocols. Pearson correlation analysis revealed a significant positive association between DOLE concentration and leukocytes DNA damage (P < 0.05). Antigenotoxic effect of the extract was more pronounced at smaller concentrations. Post-treatment with 0.125 mg/mL DOLE was the most effective against adrenaline genotoxicity. Results indicate genoprotective and antioxidant properties in dry olive leaf extract, strongly supporting further explorations of its underlying mechanisms of action.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Toxicology in Vitro
T1  - Protective effect of dry olive leaf extract in adrenaline induced DNA damage evaluated using in vitro comet assay with human peripheral leukocytes
VL  - 28
IS  - 3
SP  - 451
EP  - 456
DO  - 10.1016/j.tiv.2013.12.014
ER  - 

@article{
author = "Čabarkapa, Andrea and Živković, Lada and Žukovec, Dijana and Đelić, Ninoslav and Bajić, Vladan and Dekanski, Dragana and Spremo-Potparević, Biljana",
year = "2014",
abstract = "Excessive release of stress hormone adrenaline is accompanied by generation of reactive oxygen species which may cause disruption of DNA integrity leading to cancer and age-related disorders. Phenolic-rich plant product dry olive leaf extract (DOLE) is known to modulate effects of various oxidants in human cells. The aim was to evaluate the effect of commercial DOLE against adrenaline induced DNA damage in human leukocytes by using comet assay. Peripheral blood leukocytes from 6 healthy subjects were treated in vitro with three final concentrations of DOLE (0.125, 0.5, and 1 mg/mL) for 30 min at 37 degrees C under two different protocols, pretreatment and post-treatment. Protective effect of DOLE was assessed from its ability to attenuate formation of DNA lesions induced by adrenaline. Compared to cells exposed only to adrenaline, DOLE displayed significant reduction (P < 0.001) of DNA damage at all three concentrations and under both experimental protocols. Pearson correlation analysis revealed a significant positive association between DOLE concentration and leukocytes DNA damage (P < 0.05). Antigenotoxic effect of the extract was more pronounced at smaller concentrations. Post-treatment with 0.125 mg/mL DOLE was the most effective against adrenaline genotoxicity. Results indicate genoprotective and antioxidant properties in dry olive leaf extract, strongly supporting further explorations of its underlying mechanisms of action.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Toxicology in Vitro",
title = "Protective effect of dry olive leaf extract in adrenaline induced DNA damage evaluated using in vitro comet assay with human peripheral leukocytes",
volume = "28",
number = "3",
pages = "451-456",
doi = "10.1016/j.tiv.2013.12.014"
}

Čabarkapa, A., Živković, L., Žukovec, D., Đelić, N., Bajić, V., Dekanski, D.,& Spremo-Potparević, B.. (2014). Protective effect of dry olive leaf extract in adrenaline induced DNA damage evaluated using in vitro comet assay with human peripheral leukocytes. in Toxicology in Vitro
Pergamon-Elsevier Science Ltd, Oxford., 28(3), 451-456.
https://doi.org/10.1016/j.tiv.2013.12.014

Čabarkapa A, Živković L, Žukovec D, Đelić N, Bajić V, Dekanski D, Spremo-Potparević B. Protective effect of dry olive leaf extract in adrenaline induced DNA damage evaluated using in vitro comet assay with human peripheral leukocytes. in Toxicology in Vitro. 2014;28(3):451-456.
doi:10.1016/j.tiv.2013.12.014 .

Čabarkapa, Andrea, Živković, Lada, Žukovec, Dijana, Đelić, Ninoslav, Bajić, Vladan, Dekanski, Dragana, Spremo-Potparević, Biljana, "Protective effect of dry olive leaf extract in adrenaline induced DNA damage evaluated using in vitro comet assay with human peripheral leukocytes" in Toxicology in Vitro, 28, no. 3 (2014):451-456,
https://doi.org/10.1016/j.tiv.2013.12.014 . .

TY  - CONF
AU  - Žukovec, Dijana
AU  - Čabarkapa, Andrea
AU  - Živković, Lada
AU  - Đelić, Ninoslav
AU  - Dekanski, Dragana
AU  - Bajić, Vladan
AU  - Spremo-Potparević, Biljana
PY  - 2013
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/985
PB  - Karger, Basel
C3  - Annals of Nutrition and Metabolism
T1  - Protective Potential of Dry Olive Leaf Extract Against Oxidative Stress in Human Lymphocytes Induced by Thyroxin
VL  - 62
SP  - 51
EP  - 51
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_985
ER  - 

@conference{
author = "Žukovec, Dijana and Čabarkapa, Andrea and Živković, Lada and Đelić, Ninoslav and Dekanski, Dragana and Bajić, Vladan and Spremo-Potparević, Biljana",
year = "2013",
publisher = "Karger, Basel",
journal = "Annals of Nutrition and Metabolism",
title = "Protective Potential of Dry Olive Leaf Extract Against Oxidative Stress in Human Lymphocytes Induced by Thyroxin",
volume = "62",
pages = "51-51",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_985"
}

Žukovec, D., Čabarkapa, A., Živković, L., Đelić, N., Dekanski, D., Bajić, V.,& Spremo-Potparević, B.. (2013). Protective Potential of Dry Olive Leaf Extract Against Oxidative Stress in Human Lymphocytes Induced by Thyroxin. in Annals of Nutrition and Metabolism
Karger, Basel., 62, 51-51.
https://hdl.handle.net/21.15107/rcub_veterinar_985

Žukovec D, Čabarkapa A, Živković L, Đelić N, Dekanski D, Bajić V, Spremo-Potparević B. Protective Potential of Dry Olive Leaf Extract Against Oxidative Stress in Human Lymphocytes Induced by Thyroxin. in Annals of Nutrition and Metabolism. 2013;62:51-51.
https://hdl.handle.net/21.15107/rcub_veterinar_985 .

Žukovec, Dijana, Čabarkapa, Andrea, Živković, Lada, Đelić, Ninoslav, Dekanski, Dragana, Bajić, Vladan, Spremo-Potparević, Biljana, "Protective Potential of Dry Olive Leaf Extract Against Oxidative Stress in Human Lymphocytes Induced by Thyroxin" in Annals of Nutrition and Metabolism, 62 (2013):51-51,
https://hdl.handle.net/21.15107/rcub_veterinar_985 .