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Rutkoski CF, Grott SC, Israel NG, Guerreiro FDC, Carneiro FE, Bitschinski D, Warsneski A, Horn PA, Lima D, Bastolla CLV, Mattos JJ, Bainy ACD, da Silva EB, de Albuquerque CAC, Alves TC, de Almeida EA. Prednisone and prednisolone effects on development, blood, biochemical and histopathological markers of Aquarana catesbeianus tadpoles. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 268:106869. [PMID: 38387247 DOI: 10.1016/j.aquatox.2024.106869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/31/2024] [Accepted: 02/17/2024] [Indexed: 02/24/2024]
Abstract
Synthetic glucocorticoids are often found in surface waters and can cause harmful effects to aquatic organisms such as amphibians. In this work we evaluated the effects of the drugs prednisone (PD) and prednisolone (PL) on developmental, molecular, blood, biochemical and histological markers. Aquarana catesbeianus tadpoles were exposed for 16 days to environmentally relevant concentrations of 0, 0.1, 1 and 10 µg/L of both drugs. PD increased the transcript levels of the enzyme deiodinase III (Dio3), the hormones cortisol and T4 and delayed development. Changes in the thyroid gland occurred after tadpoles were exposed to both drugs, with a reduction in the diameter and number of follicles and an increase/or decrease in area. Also, both drugs caused a decrease in lymphocytes (L) and an increase in neutrophils (N), thrombocytes, the N:L ratio and lobed and notched erythrocytes. Increased activity of the enzymes superoxide dismutase, glutathione S-transferase and glucose 6-phosphate dehydrogenase was observed after exposure to PD. Furthermore, both drugs caused an increase in the activity of the enzymes catalase and glutathione peroxidase. However, only PD caused oxidative stress in exposed tadpoles, evidenced by increased levels of malondialdehyde and carbonyl proteins. Both drugs caused an increase in inflammatory infiltrates, blood cells and melanomacrophages in the liver. Our results indicate that PD was more toxic than PL, affecting development and causing oxidative stress.
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Affiliation(s)
- Camila Fatima Rutkoski
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Suelen Cristina Grott
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Nicole Grasmuk Israel
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | | | | | - Daiane Bitschinski
- Biodiversity Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Aline Warsneski
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Priscila Aparecida Horn
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Daína Lima
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry, Department of Biochemistry, Federal University of Santa Catarina, UFSC, Florianópolis, SC, Brazil
| | - Camila Lisarb Velasquez Bastolla
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry, Department of Biochemistry, Federal University of Santa Catarina, UFSC, Florianópolis, SC, Brazil
| | - Jacó Joaquim Mattos
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry, Department of Biochemistry, Federal University of Santa Catarina, UFSC, Florianópolis, SC, Brazil
| | - Afonso Celso Dias Bainy
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry, Department of Biochemistry, Federal University of Santa Catarina, UFSC, Florianópolis, SC, Brazil
| | | | | | - Thiago Caique Alves
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
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2
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Warsneski A, Bitschinski D, Rutkoski CF, Israel NG, Pereira Gonçalves GH, Lã L, Guerreiro F, Menta Giasson LO, Coelho de Albuquerque CA, Hasckel RP, Barbosa da Silva E, Alves TC, Alves de Almeida E. Fungicides from rice cultivation (tebuconazole and azoxystrobin) alters biochemical and histological markers of hammertoad tadpoles (Boanafaber). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 341:122900. [PMID: 37952920 DOI: 10.1016/j.envpol.2023.122900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/18/2023] [Accepted: 11/07/2023] [Indexed: 11/14/2023]
Abstract
Tebuconazole (TBZ) and azoxystrobin (AZX) are fungicides frequently used in rice cultivation. Despite protecting crops against fungal diseases, these compounds can contaminate the natural environments close to the crops, exerting negative effects on non-target organisms, the present study aimed to characterize the contamination by fungicides of a river that flows in an area dominated by rice cultivation in the north of the state of Santa Catarina, SC, Brazil. Concentrations of TBZ and AZX found in the field were used to evaluate their negative effects on development, biochemical biomarkers and histopatology of the liver of a native tadpole species, the hammerfrog (Boana faber). Tadpoles were exposed for 16 days to the lowest (1.20 μg/L) and highest (2.60 μg/L) concentration of TBZ, lowest (0.70 μg/L) and highest (1.60 μg/L) concentration of AZX, and the mix of both fungicides at lowest and highest concentration of each found in field analyses. Exposure to the lower TBZ concentration and both concentrations of the Mix accelerated the development of tadpoles. AZX caused an increase in the activities of glutathione S-transferase (GST), carboxylesterase (CbE) and glucose-6-phosphate dehydrogenase (G6PDH) in the liver, an increase in the levels of protein carbonyls (PC) in the liver and an increase in the activity of acetylcholinesterase (AChE) in muscle of tadpoles. TBZ, on the other hand, generated an increase in GST, G6PDH, PC and histopathological severity scores in liver and in muscle AChE activity. The effects were more intense in the groups exposed to the Mix of contaminants. No treatment altered brain AChE. The data showed that the fungicides from in rice cultivation found in natural aquatic environments around the crops pose risks to the health of the animals, compromising their metabolism and development.
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Affiliation(s)
- Aline Warsneski
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Daiane Bitschinski
- Biodiversity Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Camila Fátima Rutkoski
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Nicole Grasmuk Israel
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | | | - Luiza Lã
- Department of Natural Science, University of Blumenau, Blumenau, SC, Brazil
| | - Fernando Guerreiro
- Biodiversity Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | | | | | | | | | - Thiago Caíque Alves
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Eduardo Alves de Almeida
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil; Biodiversity Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil; Department of Natural Science, University of Blumenau, Blumenau, SC, Brazil.
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3
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Mattos JJ, Siebert MN, Bainy ACD. Integrated biomarker responses: a further improvement of IBR and IBRv2 indexes to preserve data variability in statistical analyses. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:871-881. [PMID: 38032530 DOI: 10.1007/s11356-023-31255-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 11/22/2023] [Indexed: 12/01/2023]
Abstract
In biomonitoring and laboratory studies, it is typical to measure a battery of molecular, biochemical, and cytogenetic biomarkers to evaluate the effects of xenobiotics in biota. However, summarizing the results of several biomarkers to inform laypersons and environmental agencies is still a challenge for researchers and environmental specialists. To address this issue, researchers have developed indexes such as the Integrated Biomarker Responses (IBR) and Integrated Biomarker Response version 2 (IBRv2) to summarize all biomarkers responses into a single value. Unfortunately, these indexes do not preserve the original biological variability, which hampers subsequent statistical analyses. In this study, we created new versions of IBR and IBRv2, which preserve individual data variability and can be used in typical statistical analyses. The new Integrated Biomarker Responses individual (IBRi), Integrated Biomarker Responses version 2 individual (IBRv2i) and Weighted Integrated Biomarker Responses version 2 individual (Weighted IBRv2i) indexes correlated with the original IBR and IBRv2 indexes and were able to detect differences among experimental groups in a simulated and case studies. Using the IBRi, IBRv2i, or Weighted IBRv2i indexes is advantageous because they maintain the data variability of the experimental groups and can be analyzed using hypothesis testing statistics like any other parameter. Additionally, this approach can help translate technical scientific terminology into a more accessible language suitable for environmental governmental agencies and decision-makers.
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Affiliation(s)
- Jacó Joaquim Mattos
- AQUOS, Department of Aquaculture, Center of Agrarian Sciences, Federal University of Santa Catarina, Servidão Caminho do Porto, Itacorubi, Florianópolis, Santa Catarina, 88.034-257, Brazil
| | - Marília Nardelli Siebert
- Department of Language, Technology, Education and Science - DALTEC, Federal Institute of Santa Catarina, Campus Florianópolis, Florianópolis, Santa Catarina, 88.020-300, Brazil
| | - Afonso Celso Dias Bainy
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry - LABCAI, Department of Biochemistry, Center of Biological Sciences, Federal University of Santa Catarina, Florianópolis, Santa Catarina, 88.037-000, Brazil.
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Grott SC, Israel NG, Lima D, Velasquez Bastolla CL, Carneiro F, Alves TC, Bitschinski D, Dias Bainy AC, Barbosa da Silva E, Coelho de Albuquerque CA, Alves de Almeida E. Effects of the herbicide ametryn on development and thyroidogenesis of bullfrog tadpoles (Aquarana catesbeiana) under different temperatures. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 322:121159. [PMID: 36716946 DOI: 10.1016/j.envpol.2023.121159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/09/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
Thyroid hormones (TH) are essential for the metamorphosis of amphibians and their production can be influenced by environmental stressors, such as temperature fluctuations, and exposure to aquatic pollutants, such as herbicides. In the present study we evaluated the influence of different temperatures (25 and 32 °C) on the effects of the herbicide ametryn (AMT, 0 - control, 10, 50 and 200 ng.L-1) for 16 days on thyroidogenesis of bullfrog tadpoles. Higher temperature and AMT exposure caused a delay in the development of tadpoles, despite no differences were noted in weight gain and total length of the animals. Levels of triiodothyronine (T3) and thyroxine (T4) were not altered neither by AMT nor by temperature, but the highest temperature caused a decrease in total area and number of follicles in the thyroid gland. Transcript levels of thyroid hormone receptors alpha and beta (TRα and TRβ) and iodothyronine deiodinase 3 (DIO3) were lower at 32 °C, which is consistent with developmental delay at the higher temperature. Tadpoles exposed to 200 ng.L-1 of AMT at 25 °C also presented delayed development, which was consistent with lower TRα and DIO3 transcript levels. Lower levels of estradiol were noted in tadpoles exposed to AMT at the higher temperature, being also possibly related to a developmental delay. This study demonstrates that higher temperature and AMT exposure impair thyroidgenesis in bullfrog tadpoles, disrupting metamorphosis.
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Affiliation(s)
- Suelen Cristina Grott
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Nicole Grasmuk Israel
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Daína Lima
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry, Department of Biochemistry, Federal University of Santa Catarina, UFSC, Florianópolis, SC, Brazil
| | - Camila Lisarb Velasquez Bastolla
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry, Department of Biochemistry, Federal University of Santa Catarina, UFSC, Florianópolis, SC, Brazil
| | - Francisco Carneiro
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Thiago Caique Alves
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Daiane Bitschinski
- Biodiversity Post-graduate Program, University of Blumenau, Blumenau, SC, Brazil
| | - Afonso Celso Dias Bainy
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry, Department of Biochemistry, Federal University of Santa Catarina, UFSC, Florianópolis, SC, Brazil
| | | | | | - Eduardo Alves de Almeida
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil.
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Motta AGC, Guerra V, do Amaral DF, da Costa Araújo AP, Vieira LG, de Melo E Silva D, Rocha TL. Assessment of multiple biomarkers in Lithobates catesbeianus (Anura: Ranidae) tadpoles exposed to zinc oxide nanoparticles and zinc chloride: integrating morphological and behavioral approaches to ecotoxicology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:13755-13772. [PMID: 36138291 DOI: 10.1007/s11356-022-23018-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 09/09/2022] [Indexed: 06/16/2023]
Abstract
The ecotoxicological risk to vertebrates posed by zinc oxide nanoparticles (ZnO NPs) is still poorly understood, especially in animals with a biphasic life cycle, which have aquatic and terrestrial phases, such as amphibians. In the present study, we investigated whether acute exposure (7 days) to ZnO NPs and zinc chloride (ZnCl2) at three environmentally relevant concentrations (0.1, 1.0, and 10 mg L-1) induces changes in the morphology, chondrocranium, and behavior of the tadpoles of Lithobates catesbeianus (Anura: Ranidae). Tadpoles exposed to both forms of Zn did not undergo any morphological or behavioral changes at the lowest concentrations (0.1 and 1.0 mg L-1). However, the animals exposed to the highest concentration (10 mg L-1) lacked oral disc structures, were smaller in size, had a longer tail, and presented changes in the position and coiling of the intestine and malformations of the chondrocranium in comparison with the control group. This indicates that ZnO NPs and ZnCl2 altered the development of the tadpoles, causing delays in their metamorphosis and even reducing individual fitness. The tadpoles exposed to both forms of Zn at 10 mg L-1 also had reduced mobility, especially in the presence of conspecifics. Based on these findings, we emphasize the importance of studying morphological, skeletal, and behavioral biomarkers to evaluate the toxic effects of metal-based nanoparticles in amphibians.
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Affiliation(s)
- Andreya Gonçalves Costa Motta
- Mutagenesis Laboratory, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Rua 235, Goiânia, GoiâniaGoiás, Brazil
| | - Vinicius Guerra
- Graduate Program in Ecology and the Management of Natural Resources, Federal University of Acre, Rio Branco, Acre, Brazil
- Boitatá Institute of Ethnobiology and Conservation of the Fauna, Goiânia, Goiás, Brazil
| | - Diogo Ferreira do Amaral
- Mutagenesis Laboratory, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Rua 235, Goiânia, GoiâniaGoiás, Brazil
| | - Amanda Pereira da Costa Araújo
- Biological Research Laboratory, Graduate Program in the Conservation of Natural Resources in the Cerrado, Goiás Federal Institute - Urutaí Campus, Urutaí, Goiás, Brazil
| | - Lucélia Gonçalves Vieira
- Ontogeny and Morphology Research Laboratory, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Daniela de Melo E Silva
- Mutagenesis Laboratory, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Thiago Lopes Rocha
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Rua 235, Goiânia, GoiâniaGoiás, Brazil.
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Grott SC, Israel NG, Bitschinski D, Abel G, Carneiro F, Alves TC, Alves de Almeida E. Influence of temperature on biomarker responses of bullfrog tadpoles (Lithobates catesbeianus) exposed to the herbicide ametryn. CHEMOSPHERE 2022; 308:136327. [PMID: 36087723 DOI: 10.1016/j.chemosphere.2022.136327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 08/23/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
The S-triazine herbicide ametryn (AMT) is relatively low adsorbed in soils and has high solubility in water, thus believed to affect non-target aquatic organisms such as amphibians. Temperature increases can intensify the effects of herbicides, possibly increasing the susceptibility of amphibians to these compounds. The aim of this study was to evaluate the influence of temperature (25 and 32 °C) on the responses of biochemical biomarkers in bullfrog tadpoles (Lithobates catesbeianus) exposed to different concentrations of AMT (0, 10, 50 and 200 ng.L-1) for a period of 16 days. The antioxidant enzymes catalase (CAT) and superoxide dismutase (SOD) and the biotransformation enzyme glutathione S-transferase (GST) had their activity decreased at the highest temperature (32 °C). SOD activity was reduced at 200 ng.L-1 and 32 °C compared to the control at the same temperature. AMT exposure also decreased the activities of alanine aminotransferase and gamma glutamyl transferase. On the other hand, the activities of acetylcholinesterase, carboxylesterase, alkaline phosphatase, levels of lipid peroxidation and protein carbonyl, as well genotoxic markers (micronucleus and nuclear abnormalities frequencies) were unchanged. The evaluation of integrated biomarker response index (IBR) indicated highest variations at the concentration of 200 ng.L-1 at 32 °C, suggesting that the combination of high AMT concentrations and temperatures generate more pronounced negative effects to tadpoles.
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Affiliation(s)
- Suelen Cristina Grott
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil.
| | - Nicole Grasmuk Israel
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil.
| | - Daiane Bitschinski
- Biodiversity Post-graduate Program, University of Blumenau, Blumenau, SC, Brazil.
| | - Gustavo Abel
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Francisco Carneiro
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil.
| | - Thiago Caique Alves
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil.
| | - Eduardo Alves de Almeida
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil.
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7
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Rutkoski CF, Grott SC, Israel NG, Carneiro FE, de Campos Guerreiro F, Santos S, Horn PA, Trentini AA, Barbosa da Silva E, Coelho de Albuquerque CA, Alves TC, Alves de Almeida E. Hepatic and blood alterations in Lithobates catesbeianus tadpoles exposed to sulfamethoxazole and oxytetracycline. CHEMOSPHERE 2022; 307:136215. [PMID: 36041517 DOI: 10.1016/j.chemosphere.2022.136215] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/10/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
In this study the effects of environmentally realistic concentrations of the antibiotics sulfamethoxazole (SMX) and oxytetracyclyne (OTC) on Lithobates catesbeianus tadpoles were evaluated, through the analyzes of the frequencies of micronucleus and nuclear abnormalities in erythrocytes, alterations in leucocytes, liver histopathology, and changes in hepatic esterase activities and oxidative stress biomarkers. The animals were exposed for 16 days at concentrations of 0 (control), 20, 90 and 460 ng L-1. No significant difference was found in the frequencies of micronucleus and nuclear abnormalities. The two highest concentrations of SMX and all concentrations of OTC caused a significant increase in the number of lymphocytes. A significant decrease in the number of neutrophils compared to the control group was observed for all concentrations tested of both antibiotics. Also, decrease in the activity of glutathione S-transferase and high histopathological severity scores, indicating liver damage, were found in tadpoles exposed to the two highest concentrations of SMX and all concentrations of OTC. The main changes in the liver histopathology were the presence of inflammatory infiltrate, melanomacrophages, vascular congestion, blood cells and eosinophils. Esterase activities were unchanged. Indeed, the two highest concentrations of OTC caused a reduction in the activities of superoxide dismutase and glucose 6-phosphate dehydrogenase, while the highest concentration inhibited the activity of glutathione peroxidase and increased protein carbonyl levels. These results evidences that environmentally realistic concentrations of SMX and OTC in aquatic environments are capable to significantly disrupt tadpoles' physiology, possibly affecting negatively their survival rate in natural environments.
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Affiliation(s)
- Camila Fatima Rutkoski
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Suelen Cristina Grott
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Nicole Grasmuk Israel
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | | | | | - Sabrina Santos
- Department of Natural Science, University of Blumenau, Blumenau, SC, Brazil
| | - Priscila Aparecida Horn
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Amanda Alves Trentini
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | | | | | - Thiago Caique Alves
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil
| | - Eduardo Alves de Almeida
- Environmental Engineering Post-Graduation Program, University of Blumenau, Blumenau, SC, Brazil; Department of Natural Science, University of Blumenau, Blumenau, SC, Brazil.
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8
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Radovanović TB, Gavrilović BR, Petrović TG, Despotović SG, Gavrić JP, Kijanović A, Mirč M, Tomašević Kolarov N, Faggio C, Prokić MD. Impact of desiccation pre-exposure on deltamethrin-induced oxidative stress in Bombina variegata juveniles. Comp Biochem Physiol C Toxicol Pharmacol 2021; 250:109191. [PMID: 34536572 DOI: 10.1016/j.cbpc.2021.109191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/25/2021] [Accepted: 09/11/2021] [Indexed: 12/27/2022]
Abstract
Global warming represents a severe threat to existing ecosystems, especially for anuran tadpoles who encounter significant fluctuations in their habitats. Decreasing water levels in permanent and temporary water bodies is a significant risk for larval survival or fitness. On the other hand, the natural environment of amphibians is extremely polluted by various xenobiotics. This study evaluated how pre-exposure of Bombina variegata tadpoles to chronic environmental stress (desiccation) modulates the biochemical response of juvenile individuals to following acute chemical stressor (pesticide deltamethrin). Our results demonstrated that individually applied pesticide changed the thiol and lipid status of the treated juveniles but animals subjected solely to desiccation pressure were more tolerant to free radicals and showed no induction of lipid peroxidation. Comparison of juveniles exposed to deltamethrin revealed that desiccation pretreatment during the larval stage of development modified cellular protection in the juveniles. Higher activities of CAT, GSH-Px and GR were recorded in the pre-exposed group, as well as a lower degree of lipid peroxidation relative to the group that was not pre-exposed to low water stress. Pre-desiccated groups displayed the greatest range of coordination of investigated antioxidant parameters, supported by Pearson's correlations. Activation of the GSH-redox system is a significant marker in juveniles against stress caused by desiccation and a chemical stressor. The stressful environment experienced during tadpole development produced an adaptive reaction to subsequent exposure to another stressor in juveniles. To develop relevant management and conservation strategies, more studies of the interactive effects of environmental and chemical stressors are necessary.
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Affiliation(s)
- Tijana B Radovanović
- Department of Physiology, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.
| | - Branka R Gavrilović
- Department of Physiology, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia
| | - Tamara G Petrović
- Department of Physiology, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia
| | - Svetlana G Despotović
- Department of Physiology, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia
| | - Jelena P Gavrić
- Department of Physiology, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia
| | - Ana Kijanović
- Department of Evolutionary Biology, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia
| | - Marko Mirč
- Department of Evolutionary Biology, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia
| | - Nataša Tomašević Kolarov
- Department of Evolutionary Biology, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy
| | - Marko D Prokić
- Department of Physiology, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia
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