TY  - JOUR
AU  - Gavrilović, Branka R.
AU  - Petrović, Tamara G.
AU  - Radovanović, Tijana B.
AU  - Despotović, Svetlana G.
AU  - Gavrić, Jelena P.
AU  - Krizmanić, Imre I.
AU  - Ćirić, Miloš
AU  - Prokić, Marko D.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3675
AB  - Although the long-term exposure of aquatic organisms to cyanobacterial blooms is a regular occurrence in the environment, the prooxidant and neurotoxic effects of such conditions are still insufficiently investigated in situ. We examined the temporal dynamics of the biochemical parameters in the liver of Pelophylax kl. esculentus frogs that inhabit the northern (N) side of Lake Ludaš (Serbia) with microcystins (MCs) produced in a cyanobacterial bloom over three summer months. The obtained data were compared with data on frogs that live on the southern (S), MC-free side of the same lake. Our results showed that the MC-producing bloom induced oxidative damage to proteins and lipids, observed as a decrease in the concentration of protein -SH groups and increased lipid peroxidation (LPO) in the liver of N frogs in comparison to S frogs. Glutathione (GSH) played a key role in the transient defense against the MC-induced development of LPO. The low glutathione peroxidase (GPx) activity detected in all groups of frogs from the N site was crucial for the observed prooxidant consequences. The bloom impaired cholinergic homeostasis as a result of a decrease in ChE activity. A delayed neurotoxic effect in relation to the prooxidant outcomes was observed. Our results also showed that even though the integrated biomarker response (IBR) of the antioxidant biomarkers increased during exposure, the individual biochemical parameters did not exhibit a well-defined time-dependent pattern because of specific adaptation dynamics and/or additional effects of the physicochemical parameters of the water. This comprehensive environmental ecotoxicological evaluation of the cyanobacterial bloom-induced biochemical alterations in the liver of frogs provides a new basis for further investigations of the prolonged, real-life ecotoxicity of the blooms.
PB  - Elsevier
T2  - Science of the Total Environment
T1  - Hepatic oxidative stress and neurotoxicity in Pelophylax kl. esculentus frogs: Influence of long-term exposure to a cyanobacterial bloom
VL  - 750
SP  - 141569
DO  - 10.1016/j.scitotenv.2020.141569
ER  - 

@article{
author = "Gavrilović, Branka R. and Petrović, Tamara G. and Radovanović, Tijana B. and Despotović, Svetlana G. and Gavrić, Jelena P. and Krizmanić, Imre I. and Ćirić, Miloš and Prokić, Marko D.",
year = "2021",
abstract = "Although the long-term exposure of aquatic organisms to cyanobacterial blooms is a regular occurrence in the environment, the prooxidant and neurotoxic effects of such conditions are still insufficiently investigated in situ. We examined the temporal dynamics of the biochemical parameters in the liver of Pelophylax kl. esculentus frogs that inhabit the northern (N) side of Lake Ludaš (Serbia) with microcystins (MCs) produced in a cyanobacterial bloom over three summer months. The obtained data were compared with data on frogs that live on the southern (S), MC-free side of the same lake. Our results showed that the MC-producing bloom induced oxidative damage to proteins and lipids, observed as a decrease in the concentration of protein -SH groups and increased lipid peroxidation (LPO) in the liver of N frogs in comparison to S frogs. Glutathione (GSH) played a key role in the transient defense against the MC-induced development of LPO. The low glutathione peroxidase (GPx) activity detected in all groups of frogs from the N site was crucial for the observed prooxidant consequences. The bloom impaired cholinergic homeostasis as a result of a decrease in ChE activity. A delayed neurotoxic effect in relation to the prooxidant outcomes was observed. Our results also showed that even though the integrated biomarker response (IBR) of the antioxidant biomarkers increased during exposure, the individual biochemical parameters did not exhibit a well-defined time-dependent pattern because of specific adaptation dynamics and/or additional effects of the physicochemical parameters of the water. This comprehensive environmental ecotoxicological evaluation of the cyanobacterial bloom-induced biochemical alterations in the liver of frogs provides a new basis for further investigations of the prolonged, real-life ecotoxicity of the blooms.",
publisher = "Elsevier",
journal = "Science of the Total Environment",
title = "Hepatic oxidative stress and neurotoxicity in Pelophylax kl. esculentus frogs: Influence of long-term exposure to a cyanobacterial bloom",
volume = "750",
pages = "141569",
doi = "10.1016/j.scitotenv.2020.141569"
}

Gavrilović, B. R., Petrović, T. G., Radovanović, T. B., Despotović, S. G., Gavrić, J. P., Krizmanić, I. I., Ćirić, M.,& Prokić, M. D.. (2021). Hepatic oxidative stress and neurotoxicity in Pelophylax kl. esculentus frogs: Influence of long-term exposure to a cyanobacterial bloom. in Science of the Total Environment
Elsevier., 750, 141569.
https://doi.org/10.1016/j.scitotenv.2020.141569

Gavrilović BR, Petrović TG, Radovanović TB, Despotović SG, Gavrić JP, Krizmanić II, Ćirić M, Prokić MD. Hepatic oxidative stress and neurotoxicity in Pelophylax kl. esculentus frogs: Influence of long-term exposure to a cyanobacterial bloom. in Science of the Total Environment. 2021;750:141569.
doi:10.1016/j.scitotenv.2020.141569 .

Gavrilović, Branka R., Petrović, Tamara G., Radovanović, Tijana B., Despotović, Svetlana G., Gavrić, Jelena P., Krizmanić, Imre I., Ćirić, Miloš, Prokić, Marko D., "Hepatic oxidative stress and neurotoxicity in Pelophylax kl. esculentus frogs: Influence of long-term exposure to a cyanobacterial bloom" in Science of the Total Environment, 750 (2021):141569,
https://doi.org/10.1016/j.scitotenv.2020.141569 . .

TY  - JOUR
AU  - Gavrilović, Branka R.
AU  - Petrović, Tamara G.
AU  - Radovanović, Tijana B.
AU  - Despotović, Svetlana G.
AU  - Gavrić, Jelena P.
AU  - Krizmanić, Imre I.
AU  - Ćirić, Miloš
AU  - Prokić, Marko D.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3677
AB  - Although the long-term exposure of aquatic organisms to cyanobacterial blooms is a regular occurrence in the environment, the prooxidant and neurotoxic effects of such conditions are still insufficiently investigated in situ. We examined the temporal dynamics of the biochemical parameters in the liver of Pelophylax kl. esculentus frogs that inhabit the northern (N) side of Lake Ludaš (Serbia) with microcystins (MCs) produced in a cyanobacterial bloom over three summer months. The obtained data were compared with data on frogs that live on the southern (S), MC-free side of the same lake. Our results showed that the MC-producing bloom induced oxidative damage to proteins and lipids, observed as a decrease in the concentration of protein -SH groups and increased lipid peroxidation (LPO) in the liver of N frogs in comparison to S frogs. Glutathione (GSH) played a key role in the transient defense against the MC-induced development of LPO. The low glutathione peroxidase (GPx) activity detected in all groups of frogs from the N site was crucial for the observed prooxidant consequences. The bloom impaired cholinergic homeostasis as a result of a decrease in ChE activity. A delayed neurotoxic effect in relation to the prooxidant outcomes was observed. Our results also showed that even though the integrated biomarker response (IBR) of the antioxidant biomarkers increased during exposure, the individual biochemical parameters did not exhibit a well-defined time-dependent pattern because of specific adaptation dynamics and/or additional effects of the physicochemical parameters of the water. This comprehensive environmental ecotoxicological evaluation of the cyanobacterial bloom-induced biochemical alterations in the liver of frogs provides a new basis for further investigations of the prolonged, real-life ecotoxicity of the blooms.
PB  - Elsevier
T2  - Science of the Total Environment
T1  - Hepatic oxidative stress and neurotoxicity in Pelophylax kl. esculentus frogs: Influence of long-term exposure to a cyanobacterial bloom
VL  - 750
SP  - 141569
DO  - 10.1016/j.scitotenv.2020.141569
ER  - 

@article{
author = "Gavrilović, Branka R. and Petrović, Tamara G. and Radovanović, Tijana B. and Despotović, Svetlana G. and Gavrić, Jelena P. and Krizmanić, Imre I. and Ćirić, Miloš and Prokić, Marko D.",
year = "2021",
abstract = "Although the long-term exposure of aquatic organisms to cyanobacterial blooms is a regular occurrence in the environment, the prooxidant and neurotoxic effects of such conditions are still insufficiently investigated in situ. We examined the temporal dynamics of the biochemical parameters in the liver of Pelophylax kl. esculentus frogs that inhabit the northern (N) side of Lake Ludaš (Serbia) with microcystins (MCs) produced in a cyanobacterial bloom over three summer months. The obtained data were compared with data on frogs that live on the southern (S), MC-free side of the same lake. Our results showed that the MC-producing bloom induced oxidative damage to proteins and lipids, observed as a decrease in the concentration of protein -SH groups and increased lipid peroxidation (LPO) in the liver of N frogs in comparison to S frogs. Glutathione (GSH) played a key role in the transient defense against the MC-induced development of LPO. The low glutathione peroxidase (GPx) activity detected in all groups of frogs from the N site was crucial for the observed prooxidant consequences. The bloom impaired cholinergic homeostasis as a result of a decrease in ChE activity. A delayed neurotoxic effect in relation to the prooxidant outcomes was observed. Our results also showed that even though the integrated biomarker response (IBR) of the antioxidant biomarkers increased during exposure, the individual biochemical parameters did not exhibit a well-defined time-dependent pattern because of specific adaptation dynamics and/or additional effects of the physicochemical parameters of the water. This comprehensive environmental ecotoxicological evaluation of the cyanobacterial bloom-induced biochemical alterations in the liver of frogs provides a new basis for further investigations of the prolonged, real-life ecotoxicity of the blooms.",
publisher = "Elsevier",
journal = "Science of the Total Environment",
title = "Hepatic oxidative stress and neurotoxicity in Pelophylax kl. esculentus frogs: Influence of long-term exposure to a cyanobacterial bloom",
volume = "750",
pages = "141569",
doi = "10.1016/j.scitotenv.2020.141569"
}

Gavrilović, B. R., Petrović, T. G., Radovanović, T. B., Despotović, S. G., Gavrić, J. P., Krizmanić, I. I., Ćirić, M.,& Prokić, M. D.. (2021). Hepatic oxidative stress and neurotoxicity in Pelophylax kl. esculentus frogs: Influence of long-term exposure to a cyanobacterial bloom. in Science of the Total Environment
Elsevier., 750, 141569.
https://doi.org/10.1016/j.scitotenv.2020.141569

Gavrilović BR, Petrović TG, Radovanović TB, Despotović SG, Gavrić JP, Krizmanić II, Ćirić M, Prokić MD. Hepatic oxidative stress and neurotoxicity in Pelophylax kl. esculentus frogs: Influence of long-term exposure to a cyanobacterial bloom. in Science of the Total Environment. 2021;750:141569.
doi:10.1016/j.scitotenv.2020.141569 .

Gavrilović, Branka R., Petrović, Tamara G., Radovanović, Tijana B., Despotović, Svetlana G., Gavrić, Jelena P., Krizmanić, Imre I., Ćirić, Miloš, Prokić, Marko D., "Hepatic oxidative stress and neurotoxicity in Pelophylax kl. esculentus frogs: Influence of long-term exposure to a cyanobacterial bloom" in Science of the Total Environment, 750 (2021):141569,
https://doi.org/10.1016/j.scitotenv.2020.141569 . .

TY  - JOUR
AU  - Gavrilović, Branka R.
AU  - Prokić, Marko D.
AU  - Petrović, Tamara G.
AU  - Despotović, Svetlana G.
AU  - Radovanović, Tijana B.
AU  - Krizmanić, Imre I.
AU  - Ćirić, Miloš
AU  - Gavrić, Jelena P.
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3343
AB  - There is little information in scientific literature as to how conditions created by a microcystin (MC) producing cyanobacterial bloom affect the oxidant/antioxidant, biotransformation and neurotoxicity parameters in adult frogs in situ. We investigated biochemical parameters in the skin and muscle of Pelophylax kl. esculentus from Lake Ludaš (Serbia) by comparing frogs that live on the northern bloom side (BS) of the lake with those that inhabit the southern no-bloom side (NBS). A higher protein carbonylation level and lower antioxidant defense system capability in the skin of frogs living in conditions of the cyanobacterial bloom were observed. Inhibition of glutathione-dependent machinery was the major mechanism responsible for the induction of cyanobacterial bloom-mediated oxidative stress in frog skin. On the other hand, the detected higher ability of muscle to overcome bloom prooxidant toxicity was linked to a higher efficiency of the biotransformation system through glutathione-S-transferase activity and/or was the consequence of indirect exposure of the tissue to the bloom. Our results have also revealed that the cyanobacterial bloom conditions induced the cholinergic neurotransmitter system in both tissues. This study provides a better understanding of the ecotoxicological impact of the MC producing cyanobacterial bloom on frogs in situ. However, further investigations of the complex mechanism involved in cyanobacterial bloom toxicity in real environmental conditions are required.
PB  - Elsevier
T2  - Aquatic Toxicology
T1  - Biochemical parameters in skin and muscle of Pelophylax kl. esculentus frogs: Influence of a cyanobacterial bloom in situ
VL  - 220
SP  - 105399
DO  - 10.1016/j.aquatox.2019.105399
ER  - 

@article{
author = "Gavrilović, Branka R. and Prokić, Marko D. and Petrović, Tamara G. and Despotović, Svetlana G. and Radovanović, Tijana B. and Krizmanić, Imre I. and Ćirić, Miloš and Gavrić, Jelena P.",
year = "2020",
abstract = "There is little information in scientific literature as to how conditions created by a microcystin (MC) producing cyanobacterial bloom affect the oxidant/antioxidant, biotransformation and neurotoxicity parameters in adult frogs in situ. We investigated biochemical parameters in the skin and muscle of Pelophylax kl. esculentus from Lake Ludaš (Serbia) by comparing frogs that live on the northern bloom side (BS) of the lake with those that inhabit the southern no-bloom side (NBS). A higher protein carbonylation level and lower antioxidant defense system capability in the skin of frogs living in conditions of the cyanobacterial bloom were observed. Inhibition of glutathione-dependent machinery was the major mechanism responsible for the induction of cyanobacterial bloom-mediated oxidative stress in frog skin. On the other hand, the detected higher ability of muscle to overcome bloom prooxidant toxicity was linked to a higher efficiency of the biotransformation system through glutathione-S-transferase activity and/or was the consequence of indirect exposure of the tissue to the bloom. Our results have also revealed that the cyanobacterial bloom conditions induced the cholinergic neurotransmitter system in both tissues. This study provides a better understanding of the ecotoxicological impact of the MC producing cyanobacterial bloom on frogs in situ. However, further investigations of the complex mechanism involved in cyanobacterial bloom toxicity in real environmental conditions are required.",
publisher = "Elsevier",
journal = "Aquatic Toxicology",
title = "Biochemical parameters in skin and muscle of Pelophylax kl. esculentus frogs: Influence of a cyanobacterial bloom in situ",
volume = "220",
pages = "105399",
doi = "10.1016/j.aquatox.2019.105399"
}

Gavrilović, B. R., Prokić, M. D., Petrović, T. G., Despotović, S. G., Radovanović, T. B., Krizmanić, I. I., Ćirić, M.,& Gavrić, J. P.. (2020). Biochemical parameters in skin and muscle of Pelophylax kl. esculentus frogs: Influence of a cyanobacterial bloom in situ. in Aquatic Toxicology
Elsevier., 220, 105399.
https://doi.org/10.1016/j.aquatox.2019.105399

Gavrilović BR, Prokić MD, Petrović TG, Despotović SG, Radovanović TB, Krizmanić II, Ćirić M, Gavrić JP. Biochemical parameters in skin and muscle of Pelophylax kl. esculentus frogs: Influence of a cyanobacterial bloom in situ. in Aquatic Toxicology. 2020;220:105399.
doi:10.1016/j.aquatox.2019.105399 .

Gavrilović, Branka R., Prokić, Marko D., Petrović, Tamara G., Despotović, Svetlana G., Radovanović, Tijana B., Krizmanić, Imre I., Ćirić, Miloš, Gavrić, Jelena P., "Biochemical parameters in skin and muscle of Pelophylax kl. esculentus frogs: Influence of a cyanobacterial bloom in situ" in Aquatic Toxicology, 220 (2020):105399,
https://doi.org/10.1016/j.aquatox.2019.105399 . .