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Pereira AC, Saraiva A, Oliva-Teles L, Guimarães L, Carvalho AP. Ecotoxicological Effects of Potassium Dichromate on the Tadpole Shrimp Triops longicaudatus. Animals (Basel) 2024; 14:358. [PMID: 38338000 PMCID: PMC10854805 DOI: 10.3390/ani14030358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/15/2024] [Accepted: 01/17/2024] [Indexed: 02/12/2024] Open
Abstract
The tadpole shrimp Triops longicaudatus is a freshwater crustacean with fast embryonic and larval development, short life cycle, and high fecundity. They are very active swimmers of a reasonable size, easy to spot and record. Such characteristics make it a promising candidate as an experimental model in ecotoxicology to evaluate the effects of aquatic pollutants, particularly using its locomotor behavior as an endpoint. To evaluate the sensitivity of T. longicaudatus and develop endpoints of interest, we conducted exposure experiments with lethal and sub-lethal concentrations of potassium dichromate, a compound known for its ecotoxicological importance and as a hexavalent chromium source. The endpoints evaluated were mortality, growth, sexual maturation, reproductive output, cholinesterase activity and locomotor/swimming behavior. The 96 h median lethal concentration was found to be 65 µg/L. Furthermore, exposure to potassium dichromate at higher concentrations had a significant negative impact on the growth rate of T. longicaudatus in terms of both body mass and length. The time for maturation was also delayed at higher concentrations. In addition, locomotor behavior allowed for the discrimination of all tested chromium concentrations and the control group and from each other, proving to be the most sensitive endpoint. Overall, the data support the potential of T. longicaudatus as a model for ecotoxicity testing, using apical endpoints with impact at the population level; in particular, results suggest that behavior assessments in this species might be useful for detecting hazardous compounds in environmental monitoring of freshwater ecosystems.
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Affiliation(s)
- André Carido Pereira
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Matosinhos, Portugal; (A.C.P.); (A.S.); (L.O.-T.)
- Biology Department, FCUP—Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- ICBAS—School of Medicine and Biomedical Sciences, University of Porto, 4050-313 Porto, Portugal
| | - Aurélia Saraiva
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Matosinhos, Portugal; (A.C.P.); (A.S.); (L.O.-T.)
- Biology Department, FCUP—Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Luís Oliva-Teles
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Matosinhos, Portugal; (A.C.P.); (A.S.); (L.O.-T.)
- Biology Department, FCUP—Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Laura Guimarães
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Matosinhos, Portugal; (A.C.P.); (A.S.); (L.O.-T.)
- Biology Department, FCUP—Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - António Paulo Carvalho
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Matosinhos, Portugal; (A.C.P.); (A.S.); (L.O.-T.)
- Biology Department, FCUP—Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
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Liao W, Zhu Z, Feng C, Yan Z, Hong Y, Liu D, Jin X. Toxicity mechanisms and bioavailability of copper to fish based on an adverse outcome pathway analysis. J Environ Sci (China) 2023; 127:495-507. [PMID: 36522080 DOI: 10.1016/j.jes.2022.06.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 05/30/2022] [Accepted: 06/01/2022] [Indexed: 06/17/2023]
Abstract
Copper (Cu) exists in a variety of forms in different aquatic environments, and affects their bioavailability. In this study we provide a systematic review on toxicity of Cu which focuses on identifying evidence in the mechanisms of Cu toxicity, and apply an adverse outcome pathway (AOP) analysis to identify multiple potential mechanisms and their interactions of Cu toxicity to fish. This analysis process included the mechanisms of behavior toxicant, oxidative toxicant, ion regulation disruption toxicity, as well as endocrine disruption toxicity. It was found that at low levels of Cu exposure, swimming, avoid predators, locating prey and other sensory functions will be impaired, and the organism will suffer from metabolic alkalosis and respiratory acidosis following the inhibition of the carbonic anhydrase active. The main pathway of acute toxicity of Cu to fish is the inhibition of the Na+/K+-ATPase enzyme, and lead to reduced intracellular sodium absorption, as well as Cu-induced increased cell permeability, in turn resulting in increased sodium ion loss, leading to cardiovascular collapse and respiratory insufficiency. The endocrine disruption toxicity of Cu to fish caused growth inhibition and reproductive reduction. In addition, there are several key pathways of Cu toxicity that are affected by hardness (e.g., Ca2+) and intracellular DOC concentrations, including inhibiting Cu-induction, improving branchial gas exchange, altering membrane transport functions, decreasing Na+ loss, and increasing Na+ uptake. The results of the AOP analysis will provide a robust framework for future directed research on the mechanisms of Cu toxicity.
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Affiliation(s)
- Wei Liao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Wetland Research Center, Jiangxi Academy of Forestry, Nanchang 330032, China; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China; Jiangxi Irrigation Experiment Central Station, Nanchang 330201, China
| | - Ziwei Zhu
- Wetland Research Center, Jiangxi Academy of Forestry, Nanchang 330032, China
| | - Chenglian Feng
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China.
| | - Zhenfei Yan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Yajun Hong
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Daqing Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xiaowei Jin
- China National Environmental Monitoring Centre, Beijing 100012, China.
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Ye H, Zhang Y, Wei L, Feng H, Fu Q, Guo Z. Waterborne Cr 3+ and Cr 6+ exposure disturbed the intestinal microbiota homeostasis in juvenile leopard coral grouper Plectropomus leopardus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 239:113653. [PMID: 35617900 DOI: 10.1016/j.ecoenv.2022.113653] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 04/30/2022] [Accepted: 05/12/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Chromium (Cr) mainly has two stable forms: Cr3+ and Cr6+. Cr and its compound are widely used in the printing, dyeing, leather making, and metallurgy industry. They are evitably released into the environment and pose a significant threat to creatures, for instance, the excessive chromium (Cr) burden in the marine ecosystem is often harmful to fish. Intestinal microbiota greatly affects fish performance, but how waterborne Cr affects fish intestinal microbiota is unclear. To test the hypothesis that the waterborne Cr exposure could significantly affect fish' intestinal microbiota homeostasis, and the effect was highly dependent on Cr concentration and speciation, the juvenile leopard coral grouper Plectropomus leopardus were exposed to waterborne Cr3+ and Cr6+ (0.1, 0.5 ppm) for 7 days, and the intestinal microbiota was determined by Amplicon sequencing of the 16S rRNA. RESULTS In all Cr treatment groups, the alpha diversity of intestinal microbiota communities of P. leopardus was decreased. The phyla Proteobacteria, Firmicutes, Actinobacteria, Chloroflexi and Bacteroidetes were the dominant intestinal microbiota. The Chao index diversity significantly declined in Cr treatment group, indicating the intestinal microbiota community structure was changed. Among the dominant intestinal microbiota, Proteobacteria was most sensitive to Cr exposure, and it increased after xposure. The PICRUSt predicted that 0.5 ppm Cr3+ expousure caused metabolism disordered in the intestinal of P. leopardus. CONCLUSIONS Waterborne Cr3+ and Cr6+ significantly disturbed intestinal microbiota homeostasis in P. leopardus, including their diversity, composition, and community structure. The metabolism level of intestinal microbiota in P. leopardus was decreased by Cr3+ exposure. High concentrations of Cr3+ may pose potential risks to the intestinal homeostasis of P. leopardus.
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Affiliation(s)
- Hengzhen Ye
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Life Sciences, College of Marine Science, Hainan University, Haikou 570228, China
| | - Yanjie Zhang
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Life Sciences, College of Marine Science, Hainan University, Haikou 570228, China
| | - Lu Wei
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Life Sciences, College of Marine Science, Hainan University, Haikou 570228, China
| | - Hao Feng
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Life Sciences, College of Marine Science, Hainan University, Haikou 570228, China
| | - Qiongyao Fu
- School of Tropical Medicine and Laboratory Medicine, Hainan Medical University, Haikou, Hainan 571199, China.
| | - Zhiqiang Guo
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Life Sciences, College of Marine Science, Hainan University, Haikou 570228, China.
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Martins MF, Costa PG, Bianchini A. Assessing multigenerational exposure to metals in elasmobranchs: Maternal transfer of contaminants in a yolk-sac viviparous species. MARINE POLLUTION BULLETIN 2022; 175:113364. [PMID: 35093781 DOI: 10.1016/j.marpolbul.2022.113364] [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: 12/22/2021] [Revised: 01/13/2022] [Accepted: 01/16/2022] [Indexed: 06/14/2023]
Abstract
This study aimed to assess the maternal offloading of metals in the Brazilian guitarfishPseudobatos horkelii through determining essential (Cr, Cu, Fe) and non-essential (Cd, Hg, Pb) metal concentrations along two generations of this species: pregnant females and offspring. The maximum transfer capacity (ECER) and offspring/mother ratio were calculated to estimate the extent of offloading, as well as the proportion of contaminants presented in offspring related to the maternal concentrations. Transfer efficiency was element-dependent. Chromium had the highest ECER (99.7%), followed by Hg (67.7%). Other essential metals were less transferred (9.6-35.6%) and Cd and Pb were not detected in uterine content samples. The relationships between maternal length and concentration, as well as transfer capacity were not significant, indicating that females might be continuously exposed, and that offloading might not excrete metals efficiently. On the other hand, embryos are exposed to these elements which could impair embryonic development.
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Affiliation(s)
- Mariana F Martins
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Av. Itália Km 8, 96203-900, Rio Grande, Brazil.
| | - Patrícia G Costa
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Av. Itália Km 8, 96203-900, Rio Grande, Brazil
| | - Adalto Bianchini
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Av. Itália Km 8, 96203-900, Rio Grande, Brazil
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Mousavi A, Salamat N, Safahieh A. Phenanthrene disrupting effects on the thyroid system of Arabian seabream, Acanthopagrus arabicus: In situ and in vivo study. Comp Biochem Physiol C Toxicol Pharmacol 2022; 252:109226. [PMID: 34756986 DOI: 10.1016/j.cbpc.2021.109226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/18/2021] [Accepted: 10/27/2021] [Indexed: 11/18/2022]
Abstract
Phenanthrene, a polycyclic aromatic hydrocarbon (PAH), is one of the endocrine disrupting chemicals (EDCs). The present study aimed to evaluate the effects of phenanthrene on histophysiology of thyroid in Arabian seabream (Acanthopagrus arabicus). In this regards, different concentrations of phenanthrene (2, 20 and 40 pg/gbw) were injected to Acanthopagrus arabicus and changes in thyroid tissue structure and the serum levels of triiodothyronine (T3) and Thyroxine (T4) were assessed. The experiment lasted 21 days. Alterations in thyroid tissue structure and T3 and T4 serum levels also were assessed in Acanthopagrus arabicus caught from different stations of the Persian Gulf (Jafari, Samail, Arvand, Zangi, Bahrakan). In addition, the concentration of phenanthrene was measured in the fish muscle and sediment samples from the stations. Phenanthrene concentration reached the maximum level in the muscle of all injected fish after 4 days and then decreased by the end of the experiment. The highest and lowest concentrations of phenanthrene were recorded in the fish muscle and sediment samples collected from Jafari and Bahrakan, respectively. The levels of T3 and T4 decreased dose dependently in phenanthrene-injected fish up to day 7 and then increased by the end of the experiment. The serum level of T3 and T4 in fish collected from different stations was as follows: Jafari<Samail<Arvand<Zangi≤Bahrakan. Some tissue changes observed in fish included decrease in the thickness of thyroid follicle epithelium and increase in follicle diameter. In conclusion, according to the results, phenanthrene significantly affected thyroid function in fish.
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Affiliation(s)
- Asieh Mousavi
- Department of Marine Biology, Faculty of Marine Science, Khorramshahr University of Marine Science and Technology, Khorramshahr, Khuzestan, Iran
| | - Negin Salamat
- Department of Marine Biology, Faculty of Marine Science, Khorramshahr University of Marine Science and Technology, Khorramshahr, Khuzestan, Iran.
| | - Alireza Safahieh
- Department of Marine Biology, Faculty of Marine Science, Khorramshahr University of Marine Science and Technology, Khorramshahr, Khuzestan, Iran
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Hajirezaee S, Ajdari A, Azhang B. Metabolite profiling, histological and oxidative stress responses in the grey mullet, Mugil cephalus exposed to the environmentally relevant concentrations of the heavy metal, Pb (NO3) 2. Comp Biochem Physiol C Toxicol Pharmacol 2021; 244:109004. [PMID: 33609749 DOI: 10.1016/j.cbpc.2021.109004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/03/2021] [Accepted: 02/11/2021] [Indexed: 12/13/2022]
Abstract
In this study, a metabolomics approach was applied to investigate the metabolic responses of grey mullet, Mugil cephalus to toxicity induced by heavy metal, Pb (NO3)2. In addition, the study was followed by assessing the peroxidation index and histology of liver as supplementary data. Pb (NO3)2 exposure affected the plasma metabolome, especially four group metabolites including amino acids, methylated metabolites, energetic metabolites and citric acid intermediates. Pb (NO3)2 in medium and high concentrations (15 and 25 μg/l) increased the levels of plasma amino acids compared to control (P < 0.01). In contrast, Pb (NO3)2 decreased the plasma levels of methylated metabolites (P < 0.01). The ketogenic metabolites and glycerol levels significantly elevated in fish exposed to 25 μg/l Pb (NO3)2 (P < 0.01). The plasma glucose levels increased in treatment, 5 μg/l Pb (NO3)2 and after a decline in treatment 15 μg/l Pb (NO3)2 elevated again in treatment 25 μg/l Pb (NO3)2 (P < 0.01).The plasma levels of lactate significantly increased in fish exposed to 5 and 15 μg/l Pb (NO3)2 and then declined to initial levels in treatment, 25 μg/l Pb (NO3)2 (P < 0.01). The plasma levels of TCA cycle intermediates significantly elevated in treatments 15 and 25 μg/l Pb (NO3)2 (P < 0.01). As a biomarker of oxidative stress, the plasma levels of malondialdehyde (MDA) showed significant increases in Pb (NO3)2 exposed fish (P < 0.01). During exposure period, wide ranges of liver tissue damages were also observed in Pb (NO3)2 exposed fish. In conclusion, exposure to Pb (NO3)2 affected the metabolome content of blood in grey mullet, mainly through inducing the biochemical pathways related to the metabolism of the amino acids, energetic metabolites and methylated metabolites. Our results may help to understand the effects of heavy metals on fish hematology from a molecular point of view.
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Affiliation(s)
- Saeed Hajirezaee
- Department of Fisheries Sciences and Engineering, Faculty of Natural Resources, University of Jiroft, Jiroft, Kerman, Iran.
| | - Ashkan Ajdari
- Offshore Fisheries Research Center, Iranian Fisheries Sciences Institute, Agricultural Research, Education & Extension Organization (AREEO), Chabahar, Iran
| | - Bizhan Azhang
- Offshore Fisheries Research Center, Iranian Fisheries Sciences Institute, Agricultural Research, Education & Extension Organization (AREEO), Chabahar, Iran
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Aguilar L, Dzul-Caamal R, Rendón-von Osten J, da Cruz AL. Effects of Polycyclic Aromatic Hydrocarbons inGambusia yucatana, an Endemic Fish from Yucatán Peninsula, Mexico. Polycycl Aromat Compd 2020. [DOI: 10.1080/10406638.2020.1755322] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Letícia Aguilar
- Laboratory of Animal Physiology, Institute of Biology, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Ricardo Dzul-Caamal
- Laboratory of Ecotoxicology, Institute of Ecology, Fisheries and Oceanography of the Gulf of Mexico, Autonomus University of Campeche, San Francisco de Campeche, Campeche, Mexico
| | - Jaime Rendón-von Osten
- Laboratory of Ecotoxicology, Institute of Ecology, Fisheries and Oceanography of the Gulf of Mexico, Autonomus University of Campeche, San Francisco de Campeche, Campeche, Mexico
| | - André Luis da Cruz
- Laboratory of Animal Physiology, Institute of Biology, Federal University of Bahia, Salvador, Bahia, Brazil
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Abstract
In all vertebrates, the thyroid axis is an endocrine feedback system that affects growth, differentiation, and reproduction, by sensing and translating central and peripheral signals to maintain homeostasis and a proper thyroidal set-point. Fish, the most diverse group of vertebrates, rely on this system for somatic growth, metamorphosis, reproductive events, and the ability to tolerate changing environments. The vast majority of the research on the thyroid axis pertains to mammals, in particular rodents, and although some progress has been made to understand the role of this endocrine axis in non-mammalian vertebrates, including amphibians and teleost fish, major gaps in our knowledge remain regarding other groups, such as elasmobranchs and cyclostomes. In this review, we discuss the roles of the thyroid axis in fish and its contributions to growth and development, metamorphosis, reproduction, osmoregulation, as well as feeding and nutrient metabolism. We also discuss how thyroid hormones have been/can be used in aquaculture, and potential threats to the thyroid system in this regard.
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Fagbenro OS, Alimba CG, Bakare AA. Experimental modeling of the acute toxicity and cytogenotoxic fate of composite mixtures of chromate, copper and arsenate oxides associated with CCA preservative using Clarias gariepinus (Burchell 1822). Environ Anal Health Toxicol 2019; 34:e2019010. [PMID: 31771319 PMCID: PMC7014949 DOI: 10.5620/eaht.e2019010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 09/19/2019] [Indexed: 01/04/2023] Open
Abstract
Concurrent occurrence of chromium (Cr), copper (Cu) and arsenic (As) from chromated copper arsenate (CCA) wood preservative in aquatic ecosystems demands that their joint-actions in eliciting toxic effects be assessed for adequate understanding of the health risk they may pose to biota. Clarias gariepinus was exposed to As2O3 , CrO3 and CuO and their composite mixtures (1:1 and 1:1:1) at various concentrations (0 – 600 mg/L) for 96-h to determine the acute toxicity using OECD (1992) protocol. C. gariepinus was then exposed to sub-lethal concentrations corresponding to 6.25, 12.5, 25.0, 50.0 and 100% of the 96-h LC50 for 7 days to assess the cytogenotoxic effects using piscine micronucleus (MN) test. The 96-h LC50 showed that the metals/metalloid demonstrated differential interactions in a concentration dependent pattern. The 96-h LC50 showed that Cr was the most toxic while Cu and As:Cu were indeterminate (Cr > Cr:Cu > As:Cr > As > As:Cr:Cu > Cu = As:Cu indeterminate). Isobologram and synergistic ratio (SR) models predicted antagonistic interaction between Cu:Cr and As:Cr and synergism between As:Cu in the causation of morbidity and mortality of C. gariepinus. Interaction factor model predicted antagonism as common interactive mechanism among the metal/metalloid mixtures in the induction of MN and abnormal nuclear erythrocytes in C. gariepinus. Predicted interactions among the three metals/ metalloid were largely antagonism and synergism towards the induction of acute toxicity and cytogenotoxicity. The models employed herein may be useful in establishing environmental safe limits for mixtures of metals/metalloids against the induction of acute toxicity and DNA damage in lower aquatic vertebrates.
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Affiliation(s)
- Olukunle S Fagbenro
- Cell Biology and Genetics Unit, Department of Zoology, University of Ibadan, Ibadan, Nigeria, Germany
| | - Chibuisi G Alimba
- Cell Biology and Genetics Unit, Department of Zoology, University of Ibadan, Ibadan, Nigeria, Germany.,Leibniz Research Centre for Working Environment and Human Factors (IfADo), Technical University of Dortmund, 44139 Dortmund, Germany
| | - Adekunle A Bakare
- Cell Biology and Genetics Unit, Department of Zoology, University of Ibadan, Ibadan, Nigeria, Germany
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Bakshi A, Panigrahi A. A comprehensive review on chromium induced alterations in fresh water fishes. Toxicol Rep 2018; 5:440-447. [PMID: 29854615 PMCID: PMC5977408 DOI: 10.1016/j.toxrep.2018.03.007] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 02/20/2018] [Accepted: 03/05/2018] [Indexed: 11/21/2022] Open
Abstract
Chromium is considered as one of the most common ubiquitous pollutants in the aquatic environment, but the pure metallic form is absent naturally. There are three oxidation states in case of Chromium viz., Cr (II), Cr (III), Cr (VI). Among which Cr (II) is most unstable. Cr (III) and Cr (VI) are the stable oxidation state of Chromium in the environment. Being one of the commonly used metals Chromium and its particulates enter the aquatic medium through effluents discharged from different industries like textiles, tanneries, electroplating workshops, ore mining, dyeing, printing-photographic and medical industries. Among these, hexavalent chromium is considered as the most toxic form because it readily passes cellular membranes and then reduced to trivalent form. This trivalent chromium combines with several macromolecules including genetic material inside the cytosol, and is ultimately exposes the toxic and mutagenic alterations due of chromium toxicity. Chromium is taken up either through gastrointestinal tract or respiratory tract. The amount varies depending upon the medium and the form of chromium. In this review, an attempt has been made to accumulate the mammoth available data regarding impact of chromium on fresh water fishes into a systematic representation. The main objective of the review is to provide a future guideline for the scientific community and public officials involved in health risk assessment and management ensuring a better environmental condition for human health.
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Affiliation(s)
- A. Bakshi
- Ecotoxicology, Fisheries and Aquaculture Extension Laboratory, Department of Zoology, University of Kalyani, Kalyani, 741235, India
| | - A.K. Panigrahi
- Department of Zoology, University of Kalyani, Kalyani, 741235, India
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Effects of the environmental endocrine disrupting compound benzo[a]pyrene on thyroidal status of abu mullet ( Liza abu) during short-term exposure. Toxicol Rep 2018; 5:377-382. [PMID: 29854607 PMCID: PMC5977374 DOI: 10.1016/j.toxrep.2018.02.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/19/2018] [Accepted: 02/28/2018] [Indexed: 11/23/2022] Open
Abstract
The half-life of BaP is 3–4 days and then it metabolized in the liver. BaP concentration in the muscle of treated fish reached a maximum level after 4 days. Exposure of fish to BaP resulted in a decrease in T3 and T4 plasma levels up to day 4. Exposure of fish to BaP resulted in an increase in TSH plasma level up to day 4.
Benzo[a]Pyrene (BaP) is a ubiquitous polycyclic aromatic hydrocarbon (PAH) that has been shown to disrupt the metabolism of thyroid hormone. Then, the present investigation aimed to study the effects of BaP on thyroid function in Liza abu. Fish were injected with 2, 10 and 25 mg/kg-bw of BaP. Samples were taken from blood, thyroid and muscle tissues at days 1, 2, 4, 7, and 14. Blood was evaluated for changes in the plasma levels of TSH, T3 and T4. Also, BaP bioaccumulation in the fish muscle was measured. Thyroid tissues were processed for routine histology. BaP concentration in the muscle of treated fish reached a maximum level after 4 days. Exposure of fish to BaP resulted in a significant decrease in T3 and T4 plasma level and increase in TSH concentration up to day 4. Also some pathological alterations were observed in BaP-exposed fish such as hemorrhage and increased number of large follicles with squamous epithelium. In conclusion, according to the results of the present investigation, short term exposure to sublethal concentrations of BaP significantly affected thyroid function in fish. The results revealed BaP ability to alter thyroid function.
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Key Words
- BaP, benzo[a]pyrene
- EDC, endocrine disrupting chemical
- Fish
- PAH, polycyclic aromatic hydrocarbon
- PCB, polychlorinated biphenyl
- Polycyclic aromatic hydrocarbon
- ROPME, Regional Organization for the Protection of the Marine Environment
- RSA, ROPME sea area
- T3, triiodothyronine (3,5,3-triiodo-l-thyroinine)
- T4, thyroxine (3,5,3,5-tetraiodo-l-thyronine)
- TSH, thyroid-stimulating hormone
- Thyroxine
- Triiodothyronine
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12
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Mirghaed AT, Ghelichpour M, Hoseini SM, Amini K. Hemolysis interference in measuring fish plasma biochemical indicators. FISH PHYSIOLOGY AND BIOCHEMISTRY 2017; 43:1143-1151. [PMID: 28293862 DOI: 10.1007/s10695-017-0359-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 03/01/2017] [Indexed: 06/06/2023]
Abstract
The present study aimed to determine hemolysis interference in measurement of plasma biochemical parameters in fish specimens. For this purpose, blood samples were harvested from 24 Huso huso juveniles. After centrifugation, each plasma sample was divided into seven portions to make seven levels of hemolysis. Hemolysis was induced by addition of different percentages of the corresponding whole blood [0 (non-hemolyzed control group), 1, 3, 5, 10, 15, and 20% of whole blood]. Albumin, total protein, calcium, phosphorus, glucose, sodium, potassium, chloride, alkaline phosphatase (ALP), aspartate transaminase (AST), and alanine transaminase (ALT) were measured in different samples. Results showed that plasma albumin, ALP, potassium, and AST significantly increased (more than 200% at the highest hemolysis level) in the hemolyzed samples. Also, plasma total protein and phosphorus showed significant elevation in the hemolyzed samples (more than 70% at the highest hemolysis level). Plasma glucose, calcium, chloride, and ALT showed narrow but significant increase in hemolyzed samples (11.8-35.2% at the highest hemolysis level). Plasma sodium showed no significant changes in the hemolyzed samples. In conclusion, the present results show that hemolysis markedly affects plasma parameters levels, which interferes with plasma results interpretation. Therefore, analysis of hemolyzed samples should be avoided or the results should be interpreted with caution. This study encourages further investigations to develop methods for omitting the effects of hemolysis by sample blanking and/or presenting correction coefficients for measurement of plasma parameters in samples with different levels of hemolysis.
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Affiliation(s)
- Ali Taheri Mirghaed
- Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Melika Ghelichpour
- Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Seyyed Morteza Hoseini
- Inland Waters Aquatic Stocks Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Gorgan, Iran.
| | - Kourosh Amini
- Inland Waters Aquatic Stocks Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Gorgan, Iran
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Hoseini SM, Hedayati A, Taheri Mirghaed A, Ghelichpour M. Toxic effects of copper sulfate and copper nanoparticles on minerals, enzymes, thyroid hormones and protein fractions of plasma and histopathology in common carp Cyprinus carpio. ACTA ACUST UNITED AC 2016; 68:493-503. [DOI: 10.1016/j.etp.2016.08.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Revised: 06/22/2016] [Accepted: 08/08/2016] [Indexed: 02/05/2023]
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14
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Atli G, Ariyurek SY, Kanak EG, Canli M. Alterations in the serum biomarkers belonging to different metabolic systems of fish (Oreochromis niloticus) after Cd and Pb exposures. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 40:508-515. [PMID: 26310509 DOI: 10.1016/j.etap.2015.08.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 07/24/2015] [Accepted: 08/04/2015] [Indexed: 06/04/2023]
Abstract
The serum of vertebrates including human gives sufficient data about the current health status of organism in concern. Biomarkers have gained importance in evaluation of data from biological monitoring studies. In this study, freshwater fish Oreochromis niloticus were individually exposed Cd or Pb using acute (10μM, 2 d) and chronic (20μM, 20 d) exposure protocols to investigate the alterations in serum parameters (ALP, ALT, AST, LDH, lipase, glucose, protein, cholesterol and triglyceride) and response of the endocrine system functioning in different axis, namely HPI (cortisol), HPT (TSH, T3, T4), gonadal (LH, FSH) and prolactin. Data showed that except LH, the levels of all hormones decreased significantly following exposure to Cd and Pb both in acute and chronic exposures. In acute exposures, the activity of ALP and levels of cholesterol and triglyceride decreased significantly following both Cd and Pb exposures, while glucose levels increased only after Cd exposure. In chronic exposures, both metal exposures caused significant decreases in ALP activity and levels of cholesterol and triglyceride, though there were increases in glucose level after Cd exposure and AST, ALT and LDH levels after Pb exposure. Data emphasized the importance of biomarker selection and multiparameter usage of relevant systems in ecotoxicological research to achieve proper evaluation of environmental data.
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Affiliation(s)
- Gülüzar Atli
- Çukurova University, Vocational School of Imamoglu, Adana, Turkey
| | | | - Esin G Kanak
- Çukurova University, Faculty of Science and Letters, Department of Biology, Adana, Turkey
| | - Mustafa Canli
- Çukurova University, Faculty of Science and Letters, Department of Biology, Adana, Turkey.
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15
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Mishra AK, Mohanty B. Effect of acute hexavalent chromium exposure on pituitary-thyroid axis of a freshwater fish, Channa punctatus (Bloch). ENVIRONMENTAL TOXICOLOGY 2015; 30:621-627. [PMID: 24347048 DOI: 10.1002/tox.21939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 12/02/2013] [Accepted: 12/05/2013] [Indexed: 06/03/2023]
Abstract
Acute exposure to hexavalent chromium (10 mg L(-1) , 20 mg L(-1) , and 40 mg L(-1) potassium dichromate for 96 h) dose-dependently affected the pituitary-thyroid axis of teleost, Channa punctatus. Significant hypertrophy of the thyroid follicle was observed in 20 mg L(-1) and 40 mg L(-1) groups; the follicular epithelium was however hypertrophied only in 40 mg L(-1) group. The colloid depletion in the lumen of thyroid follicle was evident in 20 mg L(-1) and 40 mg L(-1) groups. Serum thyroid hormones (thyroxine/T4 and triiodothyronine/T3) level increased significantly at both the higher doses. Increased immunointensity and significant hypertrophy of the pituitary thyrotrophs (anti TSHβ-immunoreactive cells) was observed in both 20 mg L(-1) and 40 mg L(-1) chromium-exposed fish. The increased thyroid hormones secretion observed in this study might be an adaptive response of the pituitary-thyroid axis under acute chromium-induced stress condition to maintain homeostasis. The long-term Cr(VI) exposures, however, may lead to attenuation/exhaustion of the pituitary-thyroid axis and pose serious threat to fish health and affect their population.
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Affiliation(s)
- Ashish K Mishra
- Department of Zoology, University of Allahabad, Allahabad, 211002, Uttar Pradesh, India
| | - Banalata Mohanty
- Department of Zoology, University of Allahabad, Allahabad, 211002, Uttar Pradesh, India
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16
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Zhu QL, Luo Z, Zhuo MQ, Tan XY, Zheng JL, Chen QL, Hu W. In vitro effects of selenium on copper-induced changes in lipid metabolism of grass carp (Ctenopharyngodon idellus) hepatocytes. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2014; 67:252-260. [PMID: 24854705 DOI: 10.1007/s00244-014-0041-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 04/21/2014] [Indexed: 06/03/2023]
Abstract
The present study was performed to evaluate the in vitro effects of selenium (Se) supplementation to prevent copper (Cu)-induced changes in lipid metabolism of hepatocytes from grass carp (Ctenopharyngodon idellus). Four groups (control and 100 μM Cu in combination with 0, 5, and 10 μM Se, respectively) were chosen. Compared with the control, activities of glucose 6-phosphatedehydrogenase, 6-phosphogluconate dehydrogenase, malic enzyme, and carnitine palmitoyltransferase I (CPT I) of all three Cu-exposed groups at 24 and 48 h were significantly greater. However, among three Cu-exposed groups, increasing Se concentration tended to increase activities of G6PD and ME at 24 h and 6PGD activity at 24 and 48 h but decreased CPT I activity at 24 h. Compared with the control, Cu exposure alone, or in combination with Se, downregulated mRNA levels of sterol regulatory element-binding protein-1 (SREBP-1c), fatty acid synthase (FAS), acetyl-CoA carboxylase, peroxisome proliferator activated receptor alpha (PPARα), CPT I, and hormone-sensitive lipase (HSL) at 24 h as well as SREBP-1c, FAS, and ACC mRNA levels at 48 h. However, upregulated mRNA levels of PPARα, CPT I, and HSL, as well as decreased triglyceride content, were recorded at 48 h. Thus, although toxic at greater levels, lower levels of Se provided significant protection against Cu-induced changes in lipid metabolism. For the first time, our study indicates the dose- and time-dependent effects of Se addition on changes in lipid metabolism induced by Cu in fish hepatocytes and provides new insights into Se-Cu interaction at both enzymatic and molecular levels.
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Affiliation(s)
- Qing-Ling Zhu
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Fishery College, Huazhong Agricultural University, Wuhan, 430070, China
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17
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Zhu QL, Luo Z, Zhuo MQ, Tan XY, Sun LD, Zheng JL, Chen QL. In vitro exposure to copper influences lipid metabolism in hepatocytes from grass carp (Ctenopharyngodon idellus). FISH PHYSIOLOGY AND BIOCHEMISTRY 2014; 40:595-605. [PMID: 24078222 DOI: 10.1007/s10695-013-9869-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Accepted: 09/23/2013] [Indexed: 06/02/2023]
Abstract
In the present study, three different copper (Cu) concentrations (control, 10 and 100 lM, respectively) and three incubation times (24, 48 and 96 h) were chosen to assess in vitro effect of Cu on lipid metabolism in hepatocytes of grass carp Ctenopharyngodon idellus. Increased glucose 6-phosphate dehydrogenase, 6-phosphogluconate dehydrogenase and carnitine palmitoyltransferase I activities were observed in hepatocytes with increasing Cu concentration and exposure duration. Cu decreased mRNA levels of several lipogenic and lipolytic genes at 24 h. However, at 48 h, Cu down-regulated the process of lipogenesis but up-regulated that of lipolysis. The Cudriven up-regulation of lipolytic genes was maintained after 96 h and accompanied by a decreased intracellular triglyceride accumulation, while no effect on lipogenic genes was shown. Thus, 96-h Cu exposure induced lipid depletion, possibly due to the upregulation of lipolysis. Although in this process, lipogenesis might be up-regulated, it was not enough to compensate lipid consumption. Our study represents the first approach to concentration- and time-dependent in vitro effects of Cu on lipid metabolism of fish hepatocytes and provides new insights into Cu toxicity in fish at both enzymatic and molecular levels.
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18
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Kong X, Jiang H, Wang S, Wu X, Fei W, Li L, Nie G, Li X. Effects of copper exposure on the hatching status and antioxidant defense at different developmental stages of embryos and larvae of goldfish Carassius auratus. CHEMOSPHERE 2013; 92:1458-1464. [PMID: 23623536 DOI: 10.1016/j.chemosphere.2013.04.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 03/30/2013] [Accepted: 04/01/2013] [Indexed: 06/02/2023]
Abstract
This study aims to assess the effects of copper exposure on hatching status and antioxidant defense at different stages of embryos and larvae of goldfish Carassius auratus. In this study, day-old embryos were randomly grouped after fertilization and then exposed to copper concentrations of 0, 0.1, 0.4, 0.7, and 1.0mgL(-1). Copper-exposed fish embryos were sampled every 24h to determine superoxide dismutase (SOD), and catalase (CAT) activities, as well as malondialdehyde (MDA) content. In addition, cumulative mortality and larval deformity were also investigated. The findings showed that cumulative mortality and larval deformity rate increased gradually with copper concentration increase. SOD and CAT activities were inhibited at higher copper concentrations. At a lower concentration (0.1mgL(-1)), SOD activity increased in larvae, whereas CAT activity showed no significant change (p>0.05). MDA, as the lipid peroxidation product, gradually accumulated in embryos and larvae with increasing copper concentration and the extension of exposure time. At 0.4mgL(-1) and more, copper toxicity was shown in embryos and larvae. In conclusion, copper-exposed effects on hatching status and antioxidant defense in C. auratus embryos and larvae showed concentration- and time-dependent patterns. The biochemical parameters in this study can be used as effective indicators for evaluating the responses of copper-exposed fish embryos. In addition, this study demonstrates that 0.4mgL(-1) copper (corresponding to 1mgL(-1) copper sulfate), used to kill parasites in aquaculture, is not safe concentration, because it can result in toxicity to larvae. Therefore, the copper concentration to kill pathogen should be less than 0.4mgL(-1) for C. auratus.
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Affiliation(s)
- Xianghui Kong
- College of Fisheries, Henan Normal University, Xinxiang 453007, PR China.
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19
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Pacheco M, Santos MA, Pereira P, Martínez JI, Alonso PJ, Soares MJ, Lopes JC. EPR detection of paramagnetic chromium in liver of fish (Anguilla anguilla) treated with dichromate(VI) and associated oxidative stress responses-contribution to elucidation of toxicity mechanisms. Comp Biochem Physiol C Toxicol Pharmacol 2013; 157:132-40. [PMID: 23142145 DOI: 10.1016/j.cbpc.2012.10.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 10/29/2012] [Accepted: 10/30/2012] [Indexed: 11/20/2022]
Abstract
The impact of chromium (Cr) on fish health has been the subject of numerous investigations, establishing a wide spectrum of toxicity, attributed particularly to the hexavalent form [Cr(VI)]. However, reports on the simultaneous assessment of Cr toxicity in fish and its toxico-kinetics, namely involving metal speciation, are scarce. Therefore, keeping in view the understanding of the mechanisms of Cr(VI) toxicity, this work intended to detect the formation of paramagnetic Cr species in liver of Anguilla anguilla following short-term dichromate(VI) intraperitoneal treatment (up to 180 min), assessing simultaneously the pro-oxidant properties. The formation of Cr(V) and Cr(III) was examined by electron paramagnetic resonance (EPR), as an innovative approach in the context of fish toxicology, and related with the levels of total Cr. Cr(V) was successfully detected and quantified by EPR spectrometry, showing a transient occurrence, mostly between 15 and 90 min post-injection, with a peak at 30 min. The limitations of EPR methodology towards the detection and quantification of Cr(III) were confirmed. Although Cr(VI) exposure induced the antioxidant system in the eel's liver, the oxidative deterioration of lipids was not prevented. Overall, the results suggested that Cr(V), as a short-lived species, did not appear to be directly and primarily responsible for the cellular damaging effects observed, since stress responses persisted up to the end of exposure regardless Cr(V) drastic decay. Though further research is needed, ROS mediated pathways (suggested by superoxide dismutase and catalase activity induction) and formation of Cr(III) complexes emerged as the most plausible mechanisms involved in Cr(VI) toxicity.
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Affiliation(s)
- M Pacheco
- Biology Department of the University of Aveiro & CESAM, 3810-193 Aveiro, Portugal.
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20
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Subhash Peter MC. Understanding the adaptive response in vertebrates: the phenomenon of ease and ease response during post-stress acclimation. Gen Comp Endocrinol 2013; 181:59-64. [PMID: 23063668 DOI: 10.1016/j.ygcen.2012.09.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 09/09/2012] [Accepted: 09/10/2012] [Indexed: 10/27/2022]
Abstract
Vertebrates have evolved mechanisms to perceive stressors that arise either from their body or from the environment. Consequently, a state of stress and stress response occur in fish which is characterized by a disturbed physiological homeostasis. The pattern of stress response becomes complex as a result of neuroendocrine involvement and shows varied magnitudes in fishes depending on the nature and the severity of stressors. The integrated and compensatory physiological modifications in fishes during their early phase of adaptive response favor them to accommodate the imposed stressor through the process of stress acclimation. In contrast, with the direction of neuroendocrine signals, a phase of recovery often called post-stress acclimation occurs if the animal gets away from the stressor exposure. During this late phase of adaptive response, physiological modifications operate in favor of the animal that reduces the magnitude of stress response and finally to a phase of normality as animals possess the urge to correct its disrupted homeostasis. The phenomenon of ease and its response thus reduces the allostatic load, resets the homeostatic state through physiologic processes and corrects the stress-induced homeostatic disturbance with the aid of neuroendocrine signals. Ample evidences are now available to support this novel concept of ease and ease response where mitigation of the intensity of stress response occurs physiologically. Treatment of fish with melatonin or serotonin precursor tryptophan can modify the magnitude of stress response as evident in the pattern of tested physiological indices. In addition to cortisol, thyroid hormone as a major stress modifier hormone is involved in the regulation of ease response in fish probably due to the mechanisms involving inter-hormonal interference. Understanding the mechanisms of adaptive responses in vertebrates thus warranties more studies on the physiology of ease and its response.
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Affiliation(s)
- M C Subhash Peter
- Department of Zoology, University of Kerala, Kariavattom 695581, Thiruvananthapuram, Kerala, India.
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21
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Endocrine disruptions induced by artificial induction of mercury chloride on sea bream. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s00580-012-1465-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Esteve C, Alcaide E, Ureña R. The effect of metals on condition and pathologies of European eel (Anguilla anguilla): in situ and laboratory experiments. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2012; 109:176-184. [PMID: 22030412 DOI: 10.1016/j.aquatox.2011.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 09/26/2011] [Accepted: 10/03/2011] [Indexed: 05/31/2023]
Abstract
Forty-nine wild eels (Anguilla anguilla) caught in the Albufera Lake (Spain), measuring 24.0-75.0 cm in length and 25.0-637.7 g in weight, were examined for metals (Cd, Co, Cr, Cu, Fe, Hg, Mn, Pb, Se and Zn), condition (CI and HSI indices), as well as for diseases (Anguillicola infestation; bacterial infections). Total metal load significantly increased in eel liver tissue parallel to total length and body weight (log), while silvering females (W(B) > 200 g; L ≥ 500 mm) exhibited the highest amounts of Co, Cu, Hg, Se and Zn. Diverse effects may be expected in these big eels due to long-term metal exposure. In fact, IMBI (individual mean (multi-metal) bioaccumulation index) and copper load (Ln) in particular, were significantly related with a decrease in the HSI, reflecting lower eel fitness. In addition, most silvering females (75%) showed a CI below 0.2, and this size group presented the highest prevalence of chronic diseases, at significant levels, that are non-lethal in the short term, but degenerative in the long term. Amounts of hepatic iron were not correlated with eel size; however, a significant, strong negative correlation between this metal (Ln) and HSI and CI was found for wild eels suffering from diseases of any aetiology. This also included small eels (W(B) <67 g; L < 350 mm), as this size group presented a significant prevalence of acute diseases caused by single virulent bacterial pathogens (i.e. Edwardsiella tarda and Vibrio vulnificus biotype 2). To assess the effect of metals on susceptibility to disease, yellow eels were maintained and exposed to iron, copper, and pathogens, in captivity under laboratory conditions. Co-exposure of eels to iron (9 μg of Fe/g of fish) and bacterial pathogens by intraperitoneal injection (IP), yielded a hundred-fold reduction in the LD50 of all bacteria assayed (i.e. E. tarda, V. vulnificus, and motile Aeromonas), and also the time taken to cause eel death. Short-term aqueous exposure of eels to 0.4, 0.7, 1.7 and 3.9 μM of copper, yielded increasing mortality among eels IP challenged by a single dose of 1.90 × 10(6) E. tarda cells, and this effect was significant for 1.7 μM of copper. These results suggest a synergistic interaction among copper and iron, and bacterial disease agents, with respect to their effect on eel health, considering sublethal levels of metals that are currently found in natural waters.
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Affiliation(s)
- Consuelo Esteve
- Departamento de Microbiología y Ecología, Universidad de Valencia, E-46100 Burjassot, Valencia, Spain.
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23
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Peter VS, Peter MCS. The interruption of thyroid and interrenal and the inter-hormonal interference in fish: does it promote physiologic adaptation or maladaptation? Gen Comp Endocrinol 2011; 174:249-58. [PMID: 22001502 DOI: 10.1016/j.ygcen.2011.09.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Revised: 09/27/2011] [Accepted: 09/29/2011] [Indexed: 11/20/2022]
Abstract
Endocrines, the chief components of chemical centers which produce hormones in tune with intrinsic and extrinsic clues, create a chemical bridge between the organism and the environment. In fishes also hormones integrate and modulate many physiologic functions and its synthesis, release, biological actions and metabolic clearance are well regulated. Consequently, thyroid hormones (THs) and cortisol, the products of thyroid and interrenal axes, have been identified for their common integrative actions on metabolic and osmotic functions in fish. On the other hand, many anthropogenic chemical substances, popularly known as endocrine disrupting chemicals, have been shown to disrupt the hormone-receptor signaling pathways in a number fish species. These chemicals which are known for their ability to induce endocrine disruption particularly on thyroid and interrenals can cause malfunction or maladaptation of many vital processes which are involved in the development, growth and reproduction in fish. On the contrary, evidence is presented that the endocrine interrupting agents (EIAs) can cause interruption of thyroid and interrenals, resulting in physiologic compensatory mechanisms which can be adaptive, though such hormonal interactions are less recognized in fishes. The EIAs of physical, chemical and biological origins can specifically interrupt and modify the hormonal interactions between THs and cortisol, resulting in specific patterns of inter-hormonal interference. The physiologic analysis of these inter-hormonal interruptions during acclimation and post-acclimation to intrinsic or extrinsic EIAs reveals that combinations of anti-hormonal, pro-hormonal or stati-hormonal interference may help the fish to fine-tune their metabolic and osmotic performances as part of physiologic adaptation. This novel hypothesis on the phenomenon of inter-hormonal interference and its consequent physiologic interference during thyroid and interrenal interruption thus forms the basis of physiologic acclimation. This interfering action of TH and cortisol during hormonal interruption may subsequently promote ecological adaptation in fish as these physiologic processes ultimately favor them to survive in their hostile environment.
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Affiliation(s)
- Valsa S Peter
- Department of Zoology, University of Kerala, Kariavattom, Thiruvananthapuram 695 581, Kerala, India
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24
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The ribosomal protein L19 mRNA is induced by copper exposure in the swordtail fish, Xiphophorus helleri. Mol Biol Rep 2011; 39:4823-9. [PMID: 21956757 DOI: 10.1007/s11033-011-1275-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2010] [Accepted: 09/15/2011] [Indexed: 10/17/2022]
Abstract
Teleosts are useful vertebrate model species for understanding copper toxicity due to the dual entry route for copper intake via the gills and intestine. In this present study, we utilized the differential display reverse transcription-polymerase chain reaction to isolate potential novel hepatic genes induced by sublethal copper exposure in the freshwater swordtail fish, Xiphophorus helleri. Full length cloning of a cDNA fragment induced by copper exposure to 1 μg/ml during 24 h resulted in the positive identification of a hepatic ribosomal protein L19 (RPL19) gene. Further characterization of this gene revealed that its transcriptional expression was dependent on dosage and time of copper exposure. This study describes for the first time the involvement of RPL19 in copper toxicity, probably as a result of increase in ribosome synthesis rate to support activities such as cellular protein translation, transcriptional activation and mRNA stabilization during sublethal copper exposure.
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25
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Oliveira M, Pacheco M, Santos MA. Fish thyroidal and stress responses in contamination monitoring--an integrated biomarker approach. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2011; 74:1265-1270. [PMID: 21463897 DOI: 10.1016/j.ecoenv.2011.03.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2009] [Revised: 03/03/2011] [Accepted: 03/05/2011] [Indexed: 05/30/2023]
Abstract
Xenobiotics may affect fish endocrine system, making endocrine responses relevant in pollution monitoring. Five critical sites in Ria de Aveiro (Portugal), having different contamination profiles, were assessed in comparison to a reference site (Torreira), focusing on Liza aurata stress (plasma cortisol, glucose and lactate) and thyroidal (plasma thyroid stimulating hormone-TSH, thyroxine-T4 and triiodothyronine-T3) responses. L. aurata at Vagos (PAHs contaminated) and Laranjo (mercury contaminated), respectively, displayed, low cortisol and high glucose as well as lactate levels. Considering thyroidal responses, high TSH levels were found at Laranjo; low T4 levels were found at Barra (subject to naval traffic) and low T3 levels were found at Rio Novo do Principe (near a former bleached kraft pulp mill effluent), Laranjo and Vagos. The integrated biomarker index ranked impacted sites as: Laranjo>Vagos>Gafanha>Rio Novo do Principe>Barra>Torreira. Endocrine responses reflected xenobiotics exposure suggesting environmental risk to fish at Ria de Aveiro. However no clear relation was found between stress and thyroidal responses.
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Affiliation(s)
- M Oliveira
- CESAM & Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal.
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26
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27
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Eyckmans M, Tudorache C, Darras VM, Blust R, De Boeck G. Hormonal and ion regulatory response in three freshwater fish species following waterborne copper exposure. Comp Biochem Physiol C Toxicol Pharmacol 2010; 152:270-8. [PMID: 20488257 DOI: 10.1016/j.cbpc.2010.05.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2010] [Revised: 05/12/2010] [Accepted: 05/12/2010] [Indexed: 11/18/2022]
Abstract
We evaluated effects of sublethal copper exposure in 3 different freshwater fish: rainbow trout (Oncorhynchus mykiss), common carp (Cyprinus carpio) and gibel carp (Carassius auratus gibelio). In a first experiment we exposed these fishes to an equally toxic Cu dose, a Cu level 10 times lower than their 96 h LC50 value: 20, 65, and 150 microg/L Cu. In a second series we exposed them to the same Cu concentration (50 microg/L). Na+/K+-ATPase activity in gill tissue was disturbed differently in rainbow trout then in common and gibel carp. Rainbow trout showed a thorough disruption of plasma ion levels at the beginning of both exposures, whereas common carp and gibel carp displayed effects only after 3 days. Rainbow trout and common carp thyroid hormones experienced adverse effects in the beginning of the exposure. The involvement of prolactin in handling metal stress was reflected in changes of mRNA prolactin receptor concentrations in gill tissue, with an up regulation of this mRNA in rainbow trout and a down regulation in gibel carp, which was more pronounced in the latter. Overall, rainbow trout appeared more sensitive in the beginning of the exposure, however, when it overcame this first challenge, it handled copper exposure in a better manner then common and gibel carp as they showed more long term impacts of Cu exposure.
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Affiliation(s)
- Marleen Eyckmans
- Laboratory for Ecophysiology, Biochemistry and Toxicology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium.
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28
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Geeraerts C, Belpaire C. The effects of contaminants in European eel: a review. ECOTOXICOLOGY (LONDON, ENGLAND) 2010; 19:239-266. [PMID: 19806452 DOI: 10.1007/s10646-009-0424-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/18/2009] [Indexed: 05/28/2023]
Abstract
European eel (Anguilla anguilla (L.)) stocks are in decline in most of their geographical distribution and their status is considered below safe biological limits. Recently, there is an increasing awareness that spawner quality might be an essential element in the decline of the species since pollution by bioaccumulating chemical substances may have a large impact on the reproduction success of the eel. This review gives an overview of the literature on the effects of contaminants on the European eel and on the consequences on the biology and fitness of the eel in order to document the role of pollution in its decline. A variety of contaminants have been found to affect the eel. These contaminants may cause disturbance of the immune system, the reproduction system, the nervous system and the endocrine system and effects were reported on several levels of biological organization, from subcellular, organ, individual up to even population level. More extensive research is needed in order to evaluate how pollutants are detrimental to eel populations. Getting a comprehensive overview of the quality (including contamination levels, biomarker responses, lipid content and condition) of the silver eel population all over Europe seems to be an essential and urgent objective for the European eel management.
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Affiliation(s)
- Caroline Geeraerts
- Research Institute for Nature and Forest, Duboislaan 14, 1560, Groenendaal-Hoeilaart, Belgium.
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29
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Velma V, Vutukuru S, Tchounwou PB. Ecotoxicology of hexavalent chromium in freshwater fish: a critical review. REVIEWS ON ENVIRONMENTAL HEALTH 2009; 24:129-45. [PMID: 19658319 PMCID: PMC2860883 DOI: 10.1515/reveh.2009.24.2.129] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Chromium (Cr) is a naturally occurring element found in rocks, animals, plants, and soil, predominantly in its insoluble trivalent form [Cr(III)]. Intense industrialization and other anthropogenic activities have led to the global occurrence of soluble hexavalent chromium Cr(VI), which is readily leached from soil to groundwater or surface water, in concentrations above permissible levels. The ecotoxicology of Cr(VI) is linked to its environmental persistence and the ability to induce a variety of adverse effects in biologic systems, including fish. In aquatic ecosystems, Cr(VI) exposure poses a significant threat to aquatic life. This paper reviews the fate and transport of Cr(VI) in the environment and its acute and chronic effects on fish. We also discuss Cr(VI) toxicity at the cellular, biochemical, and genetic levels. An attempt is made in this review to comprehend the staggered data on the toxic effects of Cr(VI) to various species of fish. Such data are extremely useful to the scientific community and public officials involved in health risk assessment and management of environmental contaminants as a guide to the best course of action to restore ecosystems and, in turn, to preserve human health.
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Affiliation(s)
- Venkatramreddy Velma
- Environmental Toxicology Research Laboratory, NIH-RCMI-Center for Environmental Health, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Jackson, Mississippi, USA
| | - S.S. Vutukuru
- Department of Biotechnology, Sreenidhi Institute of Science and Technology, Ghatkesar, Hyderabad, Andhra Pradesh, India
| | - Paul B. Tchounwou
- Environmental Toxicology Research Laboratory, NIH-RCMI-Center for Environmental Health, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Jackson, Mississippi, USA
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Animal welfare aspects of husbandry systems for farmed fish ‐ European eel ‐ Scientific Opinion of the Panel on Animal Health and Welfare. EFSA J 2008. [DOI: 10.2903/j.efsa.2008.809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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31
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Oliveira M, Serafim A, Bebianno MJ, Pacheco M, Santos MA. European eel (Anguilla anguilla L.) metallothionein, endocrine, metabolic and genotoxic responses to copper exposure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2008; 70:20-26. [PMID: 18192012 DOI: 10.1016/j.ecoenv.2007.10.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2007] [Revised: 09/20/2007] [Accepted: 10/13/2007] [Indexed: 05/25/2023]
Abstract
This study investigated Anguilla anguilla (European eel) physiological and genotoxic responses to copper (Cu) and their relation with metallothionein (MT) protection. Eels were exposed during 7 days to Cu 0.2 micromol/L. MT induction was assessed in gill and liver, revealing significant response only in liver. Endocrine responses displayed a plasma free triiodothyronine (T3) and cortisol significant decrease, though the thyroid-stimulating hormone (TSH) and free thyroxine (T4) concentrations were unaltered. A significant plasma glucose increase was observed whereas lactate was significantly decreased. Despite the absence of DNA integrity decrease in blood, gill, liver and kidney, erythrocytic nuclear abnormalities (ENA) frequency significantly increased in Cu exposed group. MT induction was insufficient to prevent endocrine and metabolic alterations as well as genotoxicity/clastogenicity in blood. However, MT protection was evident in liver by preventing DNA integrity loss. Globally, it was demonstrated that Cu environmentally realistic levels may pose a serious ecological risk to fish.
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Affiliation(s)
- M Oliveira
- CESAM & Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal.
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Pérez-Cadahía B, Laffon B, Porta M, Lafuente A, Cabaleiro T, López T, Caride A, Pumarega J, Romero A, Pásaro E, Méndez J. Relationship between blood concentrations of heavy metals and cytogenetic and endocrine parameters among subjects involved in cleaning coastal areas affected by the 'Prestige' tanker oil spill. CHEMOSPHERE 2008; 71:447-455. [PMID: 18221981 DOI: 10.1016/j.chemosphere.2007.10.053] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2007] [Revised: 10/18/2007] [Accepted: 10/28/2007] [Indexed: 05/25/2023]
Abstract
The sinking of the 'Prestige' oil tanker in front of the Galician coast (NW of Spain) in November 2002 offered a unique opportunity to analyze intermediate cytogenetic and endocrine effects among people exposed to the complex mixture of substances that oil constitutes, including several toxic heavy metals. In this work we evaluated the relationship between exposure to heavy metals (blood concentrations of aluminium, cadmium, nickel, lead and zinc) and genotoxic parameters (sister chromatid exchanges, micronucleus test and comet assay) or endocrine parameters (plasmatic concentrations of prolactin and cortisol) in subjects exposed to 'Prestige' oil during cleaning tasks developed after the spillage. Concentrations of lead were significantly related to the comet assay even after adjusting by age, sex and smoking. Cortisol concentrations were significantly influenced by aluminium, nickel (both, inversely) and cadmium (positively). Women had clearly higher concentrations of prolactin and cortisol, even when adjusting by age, smoking, cadmium, aluminium or nickel. Plasmatic cortisol was jointly influenced by gender, smoking and aluminium or nickel (all p<0.05). In women there was a strong relationship between concentrations of cadmium and prolactin (beta=0.37, p=0.031). When the effects of cadmium, aluminium and nickel on cortisol were simultaneously assessed, only the latter two metals remained statistically significant. Among parameters analysed, cortisol appeared to be the most sensitive to the effects of metal exposure. Plasma levels of cortisol deserve further evaluation as a potentially relevant biomarker to assess the effects of exposure to heavy metals.
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Affiliation(s)
- Beatriz Pérez-Cadahía
- Toxicology Unit, University of A Coruña, Edificio de Servicios Centrales de Investigación, Campus Elviña s/n, E-15071 A Coruña, Spain
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Craig PM, Wood CM, McClelland GB. Oxidative stress response and gene expression with acute copper exposure in zebrafish (Danio rerio). Am J Physiol Regul Integr Comp Physiol 2007; 293:R1882-92. [PMID: 17855494 DOI: 10.1152/ajpregu.00383.2007] [Citation(s) in RCA: 174] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In fish, environmental pollution is one factor that induces oxidative stress, and this can disturb the natural antioxidant defense system. Oxidative stress has been well characterized in vitro, yet the in vivo effects of metal-induced oxidative stress have not been extensively studied. In two experiments we examined the impacts of copper (Cu) on gene expression, oxidative damage, and cell oxidative capacity in liver and gill of zebrafish. In the first experiment, soft water-acclimated zebrafish were exposed to 8 and 15 mug/l Cu for 48 h. This exposure resulted in significant increases in gene expression of cytochrome c oxidase subunit 17 (COX-17) and catalase, associated with both increased Cu load and protein carbonyl concentrations in the gill and liver after 48 h. In addition, we examined the potential protective effects of increased waterborne Ca(2+) (3.3 mM) and Na(+) (10 mM) on acute Cu toxicity. While both treatments were effective at reducing liver and/or gill Cu loads and attenuating oxidative damage at 48 h, 10 mM Na(+) was more protective than 3.3 mM Ca(2+). There were variable changes in the maximal activities of COX and citrate synthase (CS), indicating possible alterations in cell oxidative capacity. Moreover, Cu affected COX-to-CS ratios in both gill and liver, suggesting that Cu alters normal mitochondrial biogenic processes, possibly though metallochaperones like COX-17. Overall, this study provides important steps in determining the transcriptional and physiological endpoints of acute Cu toxicity in a model tropical species.
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Affiliation(s)
- Paul M Craig
- Dept. of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1 Canada.
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Youson JH. Peripheral Endocrine Glands. I. The Gastroenteropancreatic Endocrine System and the Thyroid Gland. FISH PHYSIOLOGY 2007. [DOI: 10.1016/s1546-5098(07)26008-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Gagnon A, Jumarie C, Hontela A. Effects of Cu on plasma cortisol and cortisol secretion by adrenocortical cells of rainbow trout (Oncorhynchus mykiss). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2006; 78:59-65. [PMID: 16564581 DOI: 10.1016/j.aquatox.2006.02.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2005] [Revised: 02/13/2006] [Accepted: 02/15/2006] [Indexed: 05/08/2023]
Abstract
Fish are exposed to multiple stressors, often acting concurrently, in their environment. To evaluate the potential of Cu to act as a chemical stressor, rainbow trout (Oncorhynchus mykiss) were exposed to Cu (30 or 80 microg/l) for 30 days in the laboratory and they were subjected to a physical stressor (1 min air exposure) before sampling. Physiological stress indicators in the whole fish as well as cortisol secretion by adrenocortical cells in vitro were measured. Fish exposed to Cu had a lower condition factor, hepatosomatic index, plasma glucose, hepatic glycogen and gill Na(+)/K(+)-ATPase activity compared to controls. Exposure to Cu did not have an effect on basal plasma cortisol (fish sampled without air exposure stress) however, the air exposure-induced increase in plasma cortisol was lower in fish exposed to Cu. Cortisol secretion stimulated by ACTH in vitro was greater in adrenocortical cells isolated from fish exposed to Cu in vivo but in vitro exposure to Cu consistently impaired cortisol secretion. Our results indicate that Cu at high concentrations disrupts cortisol secretion through a direct toxic effect on adrenocortical cells while low concentrations resulting from a 30-day exposure to environmentally relevant Cu concentrations enhances cortisol secretion in response to ACTH in vitro.
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Affiliation(s)
- Alexandra Gagnon
- Département des Sciences Biologiques, TOXEN Research Centre, Université du Québec à Montréal, C.P. 8888, Suc. Centre-ville, Montréal, Que., Canada H3C 3P8
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