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Adeogun AO, Ibor OR, Chukwuka AV, Asimakopoulos AG, Zhang J, Arukwe A. Role of niche and micro-habitat preferences in per- and polyfluoroalkyl substances occurrence in the gills of tropical lake fish species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 933:173245. [PMID: 38754512 DOI: 10.1016/j.scitotenv.2024.173245] [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: 02/22/2024] [Revised: 05/07/2024] [Accepted: 05/12/2024] [Indexed: 05/18/2024]
Abstract
The present study has investigated per- and poly-fluoroalkyl substances (PFAS) in the gill tissues of various fish species inhabiting different trophic levels within Eleyele Lake, a tropical freshwater lake in Nigeria. The mean concentrations of PFAS congeners were determined, and their trends and patterns were analyzed across different trophic species. The results revealed variations in congener abundance and species-specific patterns that was influenced by habitat and niche preferences. Multivariate associations using canonical-correlation analysis (CCA) revealed distinct trends in the relationships between gill concentrations of specific PFAS congeners and different trophic groups. The strongest congener relationships were observed in the pelagic omnivore (Oreochromic niloticus: ON) with positive associations for 4:2 FTS, 9CL-PF3ONS, PFTDA, MeFOSA and PFHxS. The differences in congener profiles for the two herbivorous fish (Sarotherodon melanotheron (SM) and Coptodon galilaeus (CG)) reflect possible divergence in microhabitat and niche preferences. Furthermore, the congener overlaps between the herbivore (CG), and benthic omnivore (Clarias gariepinus: ClG) indicate a possible niche and microhabitat overlap. Our study provides valuable insights into the congener dynamics of PFAS at Eleyele Lake. However, the dissimilarity and overlapping PFAS congener profile in fish gills reflects the interplay of species niche preference and microhabitat associations. The present study highlights the need for further research to assess ecological risks and develop effective PFAS management strategies.
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Affiliation(s)
- Aina O Adeogun
- Department of Zoology, University of Ibadan, Ibadan, Nigeria
| | - Oju R Ibor
- Department of Zoology and Environmental Biology, University of Calabar, Calabar, Nigeria
| | - Azubuike V Chukwuka
- National Environmental Standards and Regulations Enforcement Agency (NESREA), Nigeria
| | | | - Junjie Zhang
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Augustine Arukwe
- Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
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2
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Chukwuka AV, Jerome FC, Hassan A, Ebonwu B, Adeogun AO. Redox-active metals and oxidative stress-mediated myopathies in Callinectes amnicola, blue crab populations from impacted sites of the Lagos Lagoon: inferences for adverse ecological outcomes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:108565-108581. [PMID: 37752391 DOI: 10.1007/s11356-023-29912-9] [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: 05/04/2023] [Accepted: 09/12/2023] [Indexed: 09/28/2023]
Abstract
While oxidative stress pathways are associated with a wide variety of tissue pathologies, its applications for evaluating and discerning ecological risks are limited. This study seeks to associate trends of lipid peroxidation and oxidative stress to risks of muscle pathologies in blue crabs inhabiting regions of the Lagos Lagoon. Crab samples (n = 520) were selected from pollution-impacted sites of the lagoon at Iddo, Ajah, Okobaba, Makoko, and the mid-lagoon area (control site). Antioxidant enzyme capacity, i.e., superoxide dismutase, catalase, glutathione peroxidase (GPx), and glutathione-S-transferase, and lipid peroxidation were evaluated in the muscle tissue of the blue crabs. The study findings showed distinct patterns of metal uptake in muscle, with redox-active metals (Cu and Zn) and redox-inactive metals (Pb and Cd) exhibiting site-specific differences. Additionally, there were changes in antioxidant modulation, lipid peroxidation, and the presence of associated myopathies. Blue crabs from sites (Makoko and Ajah) with greater uptake of redox-active metals (Cu and Zn) in muscle tissue showed higher trends of lipid peroxidation and the most prevalence of severe regression-type myopathies. Sites with lower uptake of redox-active metals showed the predominance of circulatory-type myopathies. This study also provides evidence of severe necrosis and myositis associated with digenean parasite cysts in crab muscle. Pathological evidence of severe skeletal muscle deterioration in the presence of greater lipid peroxidation could have implications for motor-neuron activity and reduced force-generating capacity necessary for adaptive responses in the wild. We conclude that elevated uptake of redox metals could aggravate the onset of myopathies in wild populations.
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Affiliation(s)
- Azubuike Victor Chukwuka
- Conservation Unit, Environmental Quality Control Department, National Environmental Standards and Regulations Enforcement Agency (NESREA), Osogbo, Osun, Nigeria.
| | - Fisayo C Jerome
- Fisheries Resources Department, Marine Biology Section, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria
- Department of Zoology, University of Ibadan, Ibadan, Nigeria
| | - Adesola Hassan
- Department of Zoology, University of Ibadan, Ibadan, Nigeria
| | - Benjamin Ebonwu
- Fisheries Resources Department, Aquaculture Section, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria
| | - Aina O Adeogun
- Department of Zoology, University of Ibadan, Ibadan, Nigeria
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Ribeiro EB, Lima IMA, Carvalho-Neto FCM, Bezerra ICS, Sodré LC, Carvalho-Neta RNF. Gill and hepatic histological alterations in Sciades herzbergii resulting from trace element contamination in the Port of São Luiz, Brazil. BRAZ J BIOL 2023; 83:e274069. [PMID: 37729212 DOI: 10.1590/1519-6984.274069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 06/17/2023] [Indexed: 09/22/2023] Open
Abstract
The objective of this study was to evaluate, through changes in the gills and livers of Sciades herzbergii, the environmental contamination to which estuarine organisms are exposed in two areas in São Marcos Bay - MA. Two collection areas located in São Marcos Bay were selected for this study: A1, an area close to the Port Complex, and A2, an area on Caranguejos Island (included in the Environmental Protection Area of Baixada Maranhense). Collections were carried out during rainy and dry periods. Sediments (for trace element analyses), surface water (for physico-chemical analyses), and specimens of S. herzbergii (for biometric measurements and identification of branchial and hepatic histopathology) were collected. Physico-chemical parameters (pH, dissolved oxygen, temperature and salinity) were within limits established by Brazilian legislation. Arsenic (in A1) and nickel (in A1 and A2) were above the legal standards in both periods. The highest percentage of histological alterations in the gills (aneurysms, lamellar fusion and detachment of the epithelium) occurred in the port area, in the rainy (93%) and dry (74%) periods. Liver alterations (melanomacrophage centers and necrosis) occurred only in specimens from the same area, in the rainy (41%) and dry (36%) periods. The highest histological indices of gill and liver changes were recorded in A1. This result was further supported by the total HI value of the lesions, which was higher in the port area compared to A2 (less impacted area), suggesting that the environmental conditions in that location are less favorable for the well-being of these organisms. Permanent environmental monitoring of the area is necessary to control environmental impacts efficiently.
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Affiliation(s)
- E B Ribeiro
- Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação em Biodiversidade e Biotecnologia - BIONORTE, São Luís, MA, Brasil
- Universidade Estadual do Maranhão - UEMA, Laboratório de Biomarcadores em Organismos Aquáticos, São Luís, MA, Brasil
| | - I M A Lima
- Universidade Estadual do Maranhão - UEMA, Laboratório de Biomarcadores em Organismos Aquáticos, São Luís, MA, Brasil
- Universidade Federal do Maranhão - UFMA, Programa de Pós-graduação em Biodiversidade e Biotecnologia - BIONORTE, São Luís, MA, Brasil
| | - F C M Carvalho-Neto
- Universidade Estadual do Maranhão - UEMA, Laboratório de Biomarcadores em Organismos Aquáticos, São Luís, MA, Brasil
| | - I C S Bezerra
- Universidade Estadual do Maranhão - UEMA, Laboratório de Biomarcadores em Organismos Aquáticos, São Luís, MA, Brasil
| | - L C Sodré
- Universidade Estadual do Maranhão - UEMA, Laboratório de Biomarcadores em Organismos Aquáticos, São Luís, MA, Brasil
| | - R N F Carvalho-Neta
- Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação em Biodiversidade e Biotecnologia - BIONORTE, São Luís, MA, Brasil
- Universidade Estadual do Maranhão - UEMA, Laboratório de Biomarcadores em Organismos Aquáticos, São Luís, MA, Brasil
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Saha S, Banerjee P, Saha NC, Chukwuka AV. Triazophos-induced Respiratory and Behavioral Effects and Development of Adverse Outcome Pathway (AOP) for short-term Exposed Freshwater Snail, Bellamya Bengalensis. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2023; 110:94. [PMID: 37171504 DOI: 10.1007/s00128-023-03734-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 05/01/2023] [Indexed: 05/13/2023]
Abstract
The physiological effects of triazophos were examined using respiratory and behavioral endpoints in Bellamya bengalensis under a 96-hour acute exposure regime. Physiological manifestation of respiratory stress was measured using the rate of oxygen consumption while behavioral toxicity was measured using crawling reflexes, touch response, and mucus production. The threshold effect values for LOEC (Lowest Observed Effect Concentration), NOEC (No Observed Effect Concentration), and MATC (Maximum Acceptable Toxicant Concentration) at 96 h were 0.40, 0.60, and 0.075 mg/l, respectively. Definitive 96 h acute exposures for both respiratory and behavioral endpoints tests were determined using a control group and concentrations ranging from 0.40 to 1.60 mg/l monitored for 24, 48, 72, and 96 h. Test organisms irrespective of exposure concentration demonstrated an initial rise in oxygen consumption rate after 24 h, followed by a progressive decrease in toxicant concentration and exposure period. The in silico structural analysis presents triazophos as having an electrophilic toxic structure similar to choline esterase inhibitors, and also capable of inducing oxidative stress. The AOP highlighted neurotoxicity and oxidative stress as plausible pathways of triazophos toxicity in mollusk species.
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Affiliation(s)
- Shubhajit Saha
- Department of Zoology, Sundarban Hazi Desarat College, South 24 Parganas-743611, Pathankhali, West Bengal, India
| | - Priyajit Banerjee
- Fishery and Ecotoxicology Research Laboratory, Department of Zoology, University of Burdwan, Purba Barddhaman, West Bengal, India
| | - Nimai Chandra Saha
- Fishery and Ecotoxicology Research Laboratory, Department of Zoology, University of Burdwan, Purba Barddhaman, West Bengal, India
| | - Azubuike V Chukwuka
- National Environmental Standards and Regulations Enforcement Agency (NESREA), Osogbo, Nigeria.
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Saha S, Dhara K, Chukwuka AV, Pal P, Saha NC, Faggio C. Sub-lethal acute effects of environmental concentrations of inorganic mercury on hematological and biochemical parameters in walking catfish, Clarias batrachus. Comp Biochem Physiol C Toxicol Pharmacol 2023; 264:109511. [PMID: 36396087 DOI: 10.1016/j.cbpc.2022.109511] [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: 08/07/2022] [Revised: 11/05/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022]
Abstract
The acute toxicity of mercury to the air-breathing fish Clarias batrachus (Linn.) was determined in this study using hematological (including hemoglobin, hematocrit, total erythrocyte count, total leukocyte count, and mean corpuscular hemoglobin concentration) and biochemical (including total serum protein, serum glucose, triglyceride, cholesterol, albumin) biomarkers at predetermined exposure concentrations (0.069 and 0.139 mg/L). Although significant differences were observed between exposure groups for all hematological and biochemical variables, a distinctive reduction in hemoglobin levels, hematocrit, and total erythrocyte count in the mercury-exposed fish compared to the control was observed from 24 h-96 h. Similarly, marked differences in serum globulin, total serum protein and cholesterol levels were observed across exposure groups from 24 h-96 h. While the marked hematological responses strongly suggestive of toxicant-related anemia, the marked biochemical responses suggest immune-modulation and metabolic disruption. The magnitude of toxic effects under graded toxicant exposures for weighted scores of combined biomarker response index (IBR) indicated an approximately 3-fold deterioration in overall health of mercury-exposed fish compared to control group. Depictions of hematological and biochemical effects in hardy species like Clarias batrachus indicate an imminent onset of anemia, immune-modulation and metabolic disruption within 24hs of exposure to inorganic mercury. Such observations for portends greater deleterious effects to less hardy aquatic biota under acute inorganic mercury environmental exposures.
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Affiliation(s)
- Shubhajit Saha
- Department of Zoology, Sundarban Hazi Desarat College, Pathankhali, South 24 Parganas, 743611, West Bengal, India
| | - Kishore Dhara
- Freshwater Fisheries Research & Training Centre, Directorate of Fisheries, Kulia, Kalyani, Nadia 741 235, West Bengal, India
| | - Azubuike V Chukwuka
- National Environmental Standards and Regulations Enforcement Agency, Osogbo, Osun State, Nigeria.
| | - Prasenjit Pal
- College of Fisheries, Central Agricultural University (I), Lembucherra, Tripura 799210, India
| | - Nimai Chandra Saha
- Fishery and Ecotoxicology Research Laboratory, Department of Zoology, University of Burdwan, Purba Barddhaman, West Bengal, India
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, Messina, Italy.
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Chukwuka AV, Saha S, Mukherjee D, Banerjee P, Dhara K, Saha NC. Deltamethrin-Induced Respiratory and Behavioral Effects and Adverse Outcome Pathways (AOP) in Short-Term Exposed Mozambique Tilapia, Oreochromis mossambicus. TOXICS 2022; 10:701. [PMID: 36422909 PMCID: PMC9695016 DOI: 10.3390/toxics10110701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/02/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
Disrupted behavior and respiratory distress effects of 96-h acute deltamethrin exposures in adult Mozambique tilapia, Oreochromis mossambicus, were investigated using behavioral indices and opercular movement, respectively. Deltamethrin concentrations were found to be associated with toxicological (lethal and sublethal) responses. At 24, 48, 72, and 96 h, the LC50 values and 95% confidence limits were 12.290 (11.174-14.411 µg/L), 12.671 (11.334-15.649 µg/L), 10.172 (9.310-11.193 µg/L), and 8.639 (7.860-9.417 µg/L), respectively. The GUTS-model analysis showed that GUTS-SD (stochastic death) with a narrow tolerance distribution in deltamethrin exposed O. mossambicus populations was more sensitive than the GUTS-IT (individual tolerance) model. Prior to death, exposed fish demonstrated concentration-dependent mortality and disturbed behavioral responses, including uncoordinated swim motions, increased mucus secretion, unbalanced and unpredictable swimming patterns, and inactivity. The altered behavioral patterns and increased opercular movement with increased deltamethrin levels and exposure time are strongly suggestive of neurotoxicity and respiratory distress, respectively. Adverse Outcome Pathways (AOPs), describing biological mechanisms and plausible pathways, highlighted oxidative stress and cholinergic effects as intermediate steps linked to respiratory distress and behavioral toxicity.
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Affiliation(s)
- Azubuike V. Chukwuka
- National Environmental Standards and Regulations Enforcement Agency (NESREA), Osogbo 234, Osun State, Nigeria
| | - Shubhajit Saha
- Department of Zoology, Sundarban Hazi Desarat College, Canning 743611, West Bengal, India
| | - Dip Mukherjee
- Department of Zoology, S.B.S. Government College, Hili 733126, West Bengal, India
| | - Priyajit Banerjee
- Fisheries Ecotoxicology Research Laboratory, Department of Zoology, University of Burdwan, Bardhhaman 713104, West Bengal, India
| | - Kishore Dhara
- Directorate of Fisheries, Government of West Bengal, Kolkata 700091, West Bengal, India
| | - Nimai Chandra Saha
- Fisheries Ecotoxicology Research Laboratory, Department of Zoology, University of Burdwan, Bardhhaman 713104, West Bengal, India
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Mukherjee D, Saha S, Chukwuka AV, Ghosh B, Dhara K, Saha NC, Pal P, Faggio C. Antioxidant enzyme activity and pathophysiological responses in the freshwater walking catfish, Clarias batrachus Linn under sub-chronic and chronic exposures to the neonicotinoid, Thiamethoxam®. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 836:155716. [PMID: 35526629 DOI: 10.1016/j.scitotenv.2022.155716] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/27/2022] [Accepted: 05/01/2022] [Indexed: 06/14/2023]
Abstract
The hydrophilic nature and resultant persistence of neonicotinoids in aquatic systems increase the exposure duration for non-target organisms. The sublethal toxicity of the neonicotinoid Thiamethoxam® spanning sub-chronic and chronic durations was investigated in Clarias batrachus, a non-target freshwater fish species. 96 h LC50 value of Thiamethoxam® on Clarias batrachus was 138.60 mg L-1. Pre-determined exposure concentrations of Thiamethoxam® (6.93 and 13.86 mg L-1) were used and effects were assessed at days 15, 30, and 45 exposure intervals. Biomarker effects were evaluated using antioxidant enzyme responses (CAT, SOD) neurotransmission (acetylcholinesterase activity), haematological and serum biochemistry changes (including haemoglobin content, total erythrocyte count, and serum albumin total leukocyte count, total serum protein, serum globulin, triglyceride, cholesterol, high-density lipoprotein, very low-density lipoprotein, low-density lipoprotein, phospholipid, and total serum glucose), histopathological alterations (gill and liver). Thiamethoxam®-exposed fish showed a marked reduction in haemoglobin content, total erythrocyte count, and serum albumin levels compared to control fish. Similarly, gill and liver antioxidant enzyme activity (CAT, SOD) and neurotransmission (acetylcholinesterase) also showed altered responses between sub-chronic exposure on day-15 and chronic responses on day-45. Histopathological observations in gill tissue revealed alterations ranging from vacuolation, hypertrophy, disruption of primary lamellar architecture, haemorrhage, the fusion of secondary lamella, and sloughing of outer epithelia. For liver tissue of exposed fish histopathological observations included increased sinusoidal spaces (ISS), necrosis of hepatocytes (NOH), nuclear degeneration (ND), disruption of architecture (DOA), macrophage infiltration of the central vein, vacuolation (V), hypertrophied hepatocytes, and haemorrhages. The gradients of toxic responses across exposure concentrations and depictions of impaired fish health with increasing thiamethoxam® exposure duration portend lowered physiological capacity for survival in the wild.
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Affiliation(s)
- Dip Mukherjee
- Department of Zoology, S.B.S. Government College, Hili, Dakshin Dinajpur, 733126 West Bengal, India
| | - Shubhajit Saha
- Department of Zoology, Sundarban Hazi Desarat College, South 24 Parganas, 743 611 West Bengal, India
| | - Azubuike V Chukwuka
- National Environmental Standards and Regulations Enforcement Agency (NESREA), Osogbo, Nigeria.
| | - Biswatosh Ghosh
- Post Graduate Department of Zoology, Bidhannagar College, Kolkata 700 064, West Bengal, India
| | - Kishore Dhara
- Freshwater Fisheries Research & Training Centre, Directorate of Fisheries, Nadia 741 251, West Bengal, India
| | - Nimai Chandra Saha
- Department of Zoology, The University of Burdwan, Purba Barddhaman, 713 104 West Bengal, India
| | - Prasenjit Pal
- College of Fisheries, Central Agricultural University (I), Lembucherra, Tripura 799 210, India
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy.
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Freitas LC, Silva JLC, Pinheiro-Sousa DB, Santos DMS, Benjamin LA, Oliveira SRS, Moreno LCGAI, Carvalho-Neta RNF. Histological biomarkers and biometric data on trahira Hoplias malabaricus (Pisces, Characiformes, Erythrinidae): a bioindicator species in the Mearim river, Brazilian Amazon. BRAZ J BIOL 2022; 82:e263047. [PMID: 35920465 DOI: 10.1590/1519-6984.263047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/27/2022] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to evaluate the levels of environmental contamination in a protected area in the Brazilian Amazon. For this, two areas were chosen along the Mearim River: the reference area (A1) and the potentially contaminated area (A2), where water samples were collected, for physicochemical and microbiological analyses, as well as specimens of Hoplias malabaricus, for the evaluation of biometric data and incidence of branchial lesions. The physicochemical analyzes of the water from both areas showed contamination (low levels of dissolved oxygen, tubidity and high iron concentrations, especially in A2). The microbiological analyzes showed that all water samples showed total coliform values higher than those acceptable by CONAMA and WHO (with higher values in A2), in addition to E. coli values higher than those allowed by legislation in A2. Regarding biometric data, male and female fishes were significantly longer and heavier in A1 during the dry and rain seasons and the gonadosomatic index also showed higher values in A1 than in A2 in both seasons. H. malabaricus showed gill lesions of minimal to moderate pathological importance in A1 and A2, indicating that specimens from both areas of the Mearim River showed biological responses to contamination. The observed changes in the water quality, bimetic parameters and the histological analyzes of the specimens of H. malabaricus directly reflect on the quality and health of the fishes in the Mearim River, and point to the urgent need for prevention and remediation of contamination in these ecosystems.
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Affiliation(s)
- L C Freitas
- Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, São Luís, MA, Brasil
| | - J L C Silva
- Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, São Luís, MA, Brasil
| | - D B Pinheiro-Sousa
- Universidade Federal do Maranhão - UFMA, Coordenação do Curso de Engenharia Ambiental. Centro de Ciências de Balsas, Balsas, MA, Brasil
| | - D M S Santos
- Universidade Estadual do Maranhão - UEMA, Departamento de Biologia, São Luís, MA, Brasil
| | - L A Benjamin
- Universidade Federal de Viçosa - UFV, Departamento de Medicina Veterinária, Viçosa, MG, Brasil
| | - S R S Oliveira
- Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação em Biodiversidade e Biotecnologia, São Luís, MA, Brasil
| | - L C G A I Moreno
- Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, São Luís, MA, Brasil
| | - R N F Carvalho-Neta
- Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, São Luís, MA, Brasil
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Liang Z, Mahmoud Abdelshafy A, Luo Z, Belwal T, Lin X, Xu Y, Wang L, Yang M, Qi M, Dong Y, Li L. Occurrence, detection, and dissipation of pesticide residue in plant-derived foodstuff: A state-of-the-art review. Food Chem 2022; 384:132494. [DOI: 10.1016/j.foodchem.2022.132494] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 02/14/2022] [Accepted: 02/15/2022] [Indexed: 12/25/2022]
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Dogan D, Deveci HA, Nur G. Manifestations of oxidative stress and liver injury in clothianidin exposed Oncorhynchus mykiss. Toxicol Res (Camb) 2021; 10:501-510. [PMID: 34141164 DOI: 10.1093/toxres/tfab027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 01/15/2021] [Accepted: 02/19/2021] [Indexed: 12/25/2022] Open
Abstract
This investigation was conducted to evaluate the effects of clothianidin, a neonicotinoid insecticide, on hepatic oxidative stress biomarkers, biochemical indices of blood serum and liver integrity in juvenile Oncorhynchus mykiss following 7, 14 and 21 days of application to environmentally relevant concentrations of 3, 15 and 30 μg/l. The observed hypertrophy caused elevation in hepatosomatic index, a significant increase in serum glucose and a decrease in tissue protein level with extended period of exposure were determined. The treatment resulted in a marked induction in the activities of antioxidant enzymes which were accompanied with simultaneous elevation in MDA and protein carbonyl level reflecting loss of membrane integrity and protein function. Histopathological examination showed liver injury manifested as hepatocellular degeneration, fibrosis, vacuolation, congestion, necrosis, steatosis and pyknosis proceding with the concentration. The stressful condition triggered hyperglycemic and hypoproteinemic conditions which might be proposed as general adaptive response. Moreover, altered liver histology reveals the hepatotoxic potential of clothianidin via oxidative stress as a common pathological mechanism leading to liver injury.
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Affiliation(s)
- Demet Dogan
- Department of Veterinary Medicine, Vocational School of Araban, University of Gaziantep, Araban-Gaziantep 27650, Turkey
| | - Haci Ahmet Deveci
- Faculty of Health and Sciences, Department of Nutrition and Dietetics, University of Gaziantep, Gaziantep 27310, Turkey
| | - Gokhan Nur
- Faculty of Medicine, Department of Histology and Embryology, University of Gaziantep, Gaziantep 27310, Turkey
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Başimoğlu Koca Y, Kara N. Alterations in gills and intestine of Danio rerio after exposure to acaricide yoksorrun-5EC (hexythiazox): histopathologic and morphometric evaluation. Drug Chem Toxicol 2021; 45:1808-1817. [PMID: 33541158 DOI: 10.1080/01480545.2021.1880428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
In this study, histopathological and morphological changes in gill and intestinal tissue of zebra fish exposed to acaricide yoksorrun were aimed to determine. Yoksorrun was applied to the experimental groups as 0.01 mL/L, 0.02 mL/L, and 0.03 mL/L. Histopathological findings which showed a parallel increase with the amount of exposure in the gill were determined. In the gills, disruption of lamellae shape, shortening and breakage of primary and secondary lamellae, edema, fusion, and separation in the secondary lamellae epithelium, hyperplasia were observed. In the intestine tissue of some groups, advanced necrosis at the tip of the villi and deterioration of the overall integrity of the villi in these regions, epithelial hyperplasia, increasing in eosinophilic cells in the submucosa, and dissolution in muscle fibers of tunica muscularis were observed. In the morphometric analysis of the gills, a significant decrease in gas exchange (PAGE) percentages (p < 0.0001) was observed in the experiment group compared to the control group. Compared to the control group, a significant decrease in the interlamellar distance and secondary lamellar length measurements of the gills and a significant increase in the secondary lamellar width measurement were observed. In basal epithelial thickness measurement, the result was insignificant between the groups. According to the results of the morphometric analysis of the intestine, a significant decrease in musculus externa was observed only in the group 2. In total wall thickness, there was a significant thinning (p < 0.0001) in all experimental groups. There was a significant shortening of the villi length (p < 0.0001) and a significant increase (p < 0.0001) in the villus width only in the group 2 and group 3. A significant increase in epithelial thickness after application was observed (p < 0.0001) in all groups compared to the control group. Based on the findings, it was decided that the living in the aquatic ecosystem would be adversely affected by this acaricide if exposed.
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Affiliation(s)
- Yücel Başimoğlu Koca
- Department of Biology, Zoology Section, Faculty of Science and Art, Adnan Menderes University, Aydin, Turkey
| | - Nazlı Kara
- Department of Biology, Zoology Section, Faculty of Science and Art, Adnan Menderes University, Aydin, Turkey
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