TY  - JOUR
AU  - Sjakste, Nikolajs
AU  - Đelić, Ninoslav
AU  - Dzintare, Maija
AU  - Živković, Lada
PY  - 2020
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1817
AB  - The review summarizes literature data on the DNA-binding, DNA-protecting and DNA-damaging activities of a range of natural human endogenous and exogenous compounds. Small natural organic molecules bind DNA in a site-specific mode, by arranging tight touch with the structure of the major and minor grooves, as well as individual bases in the local duplex DNA. Polyphenols are the best-studied exogenous compounds from this point of view. Many of them demonstrate hormetic effects, producing both beneficial and damaging effects. An attempt to establish the dependence of DNA damage or DNA protection on the concentration of the compound turned out to be successful for some polyphenols, daidzein, genistein and resveratrol, which were DNA protecting in low concentrations and DNA damaging in high concentrations. There was no evident dependence on concentration for quercetin and kaempferol. Probably, the DNA-protecting effect is associated with the affinity to DNA. Caffeine and theophylline are DNA binders; at the same time, they favor DNA repair. Although most alkaloids damage DNA, berberine can protect DNA against damage. Among the endogenous compounds, hormones belonging to the amine class, thyroid and steroid hormones appear to bind DNA and produce some DNA damage. Thus, natural compounds continue to reveal beneficial or adverse effects on genome integrity and provide a promising source of therapeutic activities.
PB  - Elsevier Ireland Ltd, Clare
T2  - Chemico-Biological Interactions
T1  - DNA-binding and DNA-protecting activities of small natural organic molecules and food extracts
VL  - 323
SP  - 109030
DO  - 10.1016/j.cbi.2020.109030
ER  - 

@article{
author = "Sjakste, Nikolajs and Đelić, Ninoslav and Dzintare, Maija and Živković, Lada",
year = "2020",
abstract = "The review summarizes literature data on the DNA-binding, DNA-protecting and DNA-damaging activities of a range of natural human endogenous and exogenous compounds. Small natural organic molecules bind DNA in a site-specific mode, by arranging tight touch with the structure of the major and minor grooves, as well as individual bases in the local duplex DNA. Polyphenols are the best-studied exogenous compounds from this point of view. Many of them demonstrate hormetic effects, producing both beneficial and damaging effects. An attempt to establish the dependence of DNA damage or DNA protection on the concentration of the compound turned out to be successful for some polyphenols, daidzein, genistein and resveratrol, which were DNA protecting in low concentrations and DNA damaging in high concentrations. There was no evident dependence on concentration for quercetin and kaempferol. Probably, the DNA-protecting effect is associated with the affinity to DNA. Caffeine and theophylline are DNA binders; at the same time, they favor DNA repair. Although most alkaloids damage DNA, berberine can protect DNA against damage. Among the endogenous compounds, hormones belonging to the amine class, thyroid and steroid hormones appear to bind DNA and produce some DNA damage. Thus, natural compounds continue to reveal beneficial or adverse effects on genome integrity and provide a promising source of therapeutic activities.",
publisher = "Elsevier Ireland Ltd, Clare",
journal = "Chemico-Biological Interactions",
title = "DNA-binding and DNA-protecting activities of small natural organic molecules and food extracts",
volume = "323",
pages = "109030",
doi = "10.1016/j.cbi.2020.109030"
}

Sjakste, N., Đelić, N., Dzintare, M.,& Živković, L.. (2020). DNA-binding and DNA-protecting activities of small natural organic molecules and food extracts. in Chemico-Biological Interactions
Elsevier Ireland Ltd, Clare., 323, 109030.
https://doi.org/10.1016/j.cbi.2020.109030

Sjakste N, Đelić N, Dzintare M, Živković L. DNA-binding and DNA-protecting activities of small natural organic molecules and food extracts. in Chemico-Biological Interactions. 2020;323:109030.
doi:10.1016/j.cbi.2020.109030 .

Sjakste, Nikolajs, Đelić, Ninoslav, Dzintare, Maija, Živković, Lada, "DNA-binding and DNA-protecting activities of small natural organic molecules and food extracts" in Chemico-Biological Interactions, 323 (2020):109030,
https://doi.org/10.1016/j.cbi.2020.109030 . .

TY  - JOUR
AU  - Montag, Gracia
AU  - Bankoglu, Ezgi Eylul
AU  - Bolte, Annika
AU  - Hintzsche, Henning
AU  - Đelić, Ninoslav
AU  - Stopper, Helga
PY  - 2019
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1789
AB  - The aim of this study was to investigate the effect of the cell differentiation status on the sensitivity to genotoxic insults. For this, we utilized the comet assay to test the DNA damage after treatment with 5 different substances with different mechanism of action in human promyelocytic HL60 cells with or without cell differentiation. A 4-hour MMS treatment induced a significant and concentration-dependent increase in DNA damage for both differentiated and undifferentiated cells, but the difference in sensitivity was only significant at the highest concentration. A 4-hour doxorubicin treatment did not induce DNA damage in differentiated HL60 cells, while it did in undifferentiated cells with its highest tested concentration. A one-hour etoposide treatment caused significant increase in DNA damage concentration dependently in both cell variants. This DNA damage was significantly higher in undifferentiated HL60 cells with several tested concentrations of etoposide. The treatment with the oxidizing substances hydrogen peroxide and potassium bromate yielded significant DNA damage induction in both undifferentiated and differentiated cells with no difference according to the differentiation status. Doxorubicin and etoposide are known to inhibit topoisomerase II. The activity of this enzyme has been shown to be higher in undifferentiated actively proliferating cells than in differentiated cells. This may be of relevance when exposures to topoisomerase-inhibiting compounds or the genotoxicity of compounds with unknown mechanism of action are assessed in routine testing.
PB  - Elsevier, Amsterdam
T2  - Mutation Research-Genetic Toxicology and Environmental Mutagenesis
T1  - Differentiated and exponentially growing HL60 cells exhibit different sensitivity to some genotoxic agents in the comet assay
VL  - 845
SP  - UNSP 402972
DO  - 10.1016/j.mrgentox.2018.10.004
ER  - 

@article{
author = "Montag, Gracia and Bankoglu, Ezgi Eylul and Bolte, Annika and Hintzsche, Henning and Đelić, Ninoslav and Stopper, Helga",
year = "2019",
abstract = "The aim of this study was to investigate the effect of the cell differentiation status on the sensitivity to genotoxic insults. For this, we utilized the comet assay to test the DNA damage after treatment with 5 different substances with different mechanism of action in human promyelocytic HL60 cells with or without cell differentiation. A 4-hour MMS treatment induced a significant and concentration-dependent increase in DNA damage for both differentiated and undifferentiated cells, but the difference in sensitivity was only significant at the highest concentration. A 4-hour doxorubicin treatment did not induce DNA damage in differentiated HL60 cells, while it did in undifferentiated cells with its highest tested concentration. A one-hour etoposide treatment caused significant increase in DNA damage concentration dependently in both cell variants. This DNA damage was significantly higher in undifferentiated HL60 cells with several tested concentrations of etoposide. The treatment with the oxidizing substances hydrogen peroxide and potassium bromate yielded significant DNA damage induction in both undifferentiated and differentiated cells with no difference according to the differentiation status. Doxorubicin and etoposide are known to inhibit topoisomerase II. The activity of this enzyme has been shown to be higher in undifferentiated actively proliferating cells than in differentiated cells. This may be of relevance when exposures to topoisomerase-inhibiting compounds or the genotoxicity of compounds with unknown mechanism of action are assessed in routine testing.",
publisher = "Elsevier, Amsterdam",
journal = "Mutation Research-Genetic Toxicology and Environmental Mutagenesis",
title = "Differentiated and exponentially growing HL60 cells exhibit different sensitivity to some genotoxic agents in the comet assay",
volume = "845",
pages = "UNSP 402972",
doi = "10.1016/j.mrgentox.2018.10.004"
}

Montag, G., Bankoglu, E. E., Bolte, A., Hintzsche, H., Đelić, N.,& Stopper, H.. (2019). Differentiated and exponentially growing HL60 cells exhibit different sensitivity to some genotoxic agents in the comet assay. in Mutation Research-Genetic Toxicology and Environmental Mutagenesis
Elsevier, Amsterdam., 845, UNSP 402972.
https://doi.org/10.1016/j.mrgentox.2018.10.004

Montag G, Bankoglu EE, Bolte A, Hintzsche H, Đelić N, Stopper H. Differentiated and exponentially growing HL60 cells exhibit different sensitivity to some genotoxic agents in the comet assay. in Mutation Research-Genetic Toxicology and Environmental Mutagenesis. 2019;845:UNSP 402972.
doi:10.1016/j.mrgentox.2018.10.004 .

Montag, Gracia, Bankoglu, Ezgi Eylul, Bolte, Annika, Hintzsche, Henning, Đelić, Ninoslav, Stopper, Helga, "Differentiated and exponentially growing HL60 cells exhibit different sensitivity to some genotoxic agents in the comet assay" in Mutation Research-Genetic Toxicology and Environmental Mutagenesis, 845 (2019):UNSP 402972,
https://doi.org/10.1016/j.mrgentox.2018.10.004 . .

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  - Živković, Lada
AU  - Bajić, Vladan
AU  - Bruić, Marija
AU  - Borozan, Sunčica
AU  - Popić, Kristina
AU  - Topalović, Dijana
AU  - Santibanez, Juan Francisco
AU  - Spremo-Potparević, Biljana
PY  - 2019
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1790
AB  - Immune Assist (IA) is produced from extract of six species of medical mushrooms: Agaricus blazei - Cordyceps sinensis - Grifola frondosa - Ganoderma lucidum - Coriolus versicolor - Lentinula edodes. The genoprotective potential of IA was evaluated for the first time. Significant antigenotoxic effects were detected in human peripheral blood cells against H2O2 induced DNA damage, in the pretreatment and in the posttreatment. The most efficient concentration of IA in pretreatment was 500 mu g/mL, while in posttreatment it was the concentration of 250 mu g/mL. Kinetics of attenuation of H2O2 induced DNA damage in posttreatment with the optimal concentration of IA showed significant decrease in the number of damaged cells at all time periods (15-60 min), reaching the greatest reduction after 15 and 45 min. Remarkable center dot OH scavenging properties and moderate reducing power, together with the modest DPPH scavenging activity, could be responsible for the great attenuation of DNA damage after 15 min of exposure to IA, while reduction of DNA damage after 45 min could be the result in additional stimulation of the cells repair machinery. Our results suggest that IA displayed antigenotoxic and antioxidant properties. A broader investigation of its profile in biological systems is needed.
PB  - Elsevier, Amsterdam
T2  - Mutation Research-Genetic Toxicology and Environmental Mutagenesis
T1  - Antigenotoxic and antioxidant potential of medicinal mushrooms (Immune Assist) against DNA damage induced by free radicals-an in vitro study
VL  - 845
SP  - UNSP 403078
DO  - 10.1016/j.mrgentox.2019.06.008
ER  - 

@article{
author = "Živković, Lada and Bajić, Vladan and Bruić, Marija and Borozan, Sunčica and Popić, Kristina and Topalović, Dijana and Santibanez, Juan Francisco and Spremo-Potparević, Biljana",
year = "2019",
abstract = "Immune Assist (IA) is produced from extract of six species of medical mushrooms: Agaricus blazei - Cordyceps sinensis - Grifola frondosa - Ganoderma lucidum - Coriolus versicolor - Lentinula edodes. The genoprotective potential of IA was evaluated for the first time. Significant antigenotoxic effects were detected in human peripheral blood cells against H2O2 induced DNA damage, in the pretreatment and in the posttreatment. The most efficient concentration of IA in pretreatment was 500 mu g/mL, while in posttreatment it was the concentration of 250 mu g/mL. Kinetics of attenuation of H2O2 induced DNA damage in posttreatment with the optimal concentration of IA showed significant decrease in the number of damaged cells at all time periods (15-60 min), reaching the greatest reduction after 15 and 45 min. Remarkable center dot OH scavenging properties and moderate reducing power, together with the modest DPPH scavenging activity, could be responsible for the great attenuation of DNA damage after 15 min of exposure to IA, while reduction of DNA damage after 45 min could be the result in additional stimulation of the cells repair machinery. Our results suggest that IA displayed antigenotoxic and antioxidant properties. A broader investigation of its profile in biological systems is needed.",
publisher = "Elsevier, Amsterdam",
journal = "Mutation Research-Genetic Toxicology and Environmental Mutagenesis",
title = "Antigenotoxic and antioxidant potential of medicinal mushrooms (Immune Assist) against DNA damage induced by free radicals-an in vitro study",
volume = "845",
pages = "UNSP 403078",
doi = "10.1016/j.mrgentox.2019.06.008"
}

Živković, L., Bajić, V., Bruić, M., Borozan, S., Popić, K., Topalović, D., Santibanez, J. F.,& Spremo-Potparević, B.. (2019). Antigenotoxic and antioxidant potential of medicinal mushrooms (Immune Assist) against DNA damage induced by free radicals-an in vitro study. in Mutation Research-Genetic Toxicology and Environmental Mutagenesis
Elsevier, Amsterdam., 845, UNSP 403078.
https://doi.org/10.1016/j.mrgentox.2019.06.008

Živković L, Bajić V, Bruić M, Borozan S, Popić K, Topalović D, Santibanez JF, Spremo-Potparević B. Antigenotoxic and antioxidant potential of medicinal mushrooms (Immune Assist) against DNA damage induced by free radicals-an in vitro study. in Mutation Research-Genetic Toxicology and Environmental Mutagenesis. 2019;845:UNSP 403078.
doi:10.1016/j.mrgentox.2019.06.008 .

Živković, Lada, Bajić, Vladan, Bruić, Marija, Borozan, Sunčica, Popić, Kristina, Topalović, Dijana, Santibanez, Juan Francisco, Spremo-Potparević, Biljana, "Antigenotoxic and antioxidant potential of medicinal mushrooms (Immune Assist) against DNA damage induced by free radicals-an in vitro study" in Mutation Research-Genetic Toxicology and Environmental Mutagenesis, 845 (2019):UNSP 403078,
https://doi.org/10.1016/j.mrgentox.2019.06.008 . .