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Oliveira ICCS, Marinsek GP, Gonçalves ARN, Lopes BS, Correia LVB, Da Silva RCB, Castro IB, Mari RB. Investigating tributyltin's toxic effects: Intestinal barrier and neuroenteric disruption in rat's jejunum. Neurotoxicology 2024; 105:208-215. [PMID: 39396746 DOI: 10.1016/j.neuro.2024.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 09/24/2024] [Accepted: 10/08/2024] [Indexed: 10/15/2024]
Abstract
The expansion of economic activities in coastal areas has significantly increased chemical contamination, leading to major environmental challenges. Contaminants enter the human body through the food chain, particularly via seafood and water consumption, triggering biomagnification and bioaccumulation processes. The gastrointestinal tract (GIT) acts as a selective barrier, protecting against chemical pollutants and maintaining homeostasis through a complex network of cells and immune responses. This study assessed impact of tributyltin (TBT), a highly toxic organometallic compound used in antifouling coatings for ships, on the GIT and myenteric neural plasticity in young rats. TBT exposure leads to histopathological changes, including epithelial detachment and inflammatory foci, especially at lower environmental doses. The study found that TBT causes significant reductions in villi height, increases in goblet cells and intraepithelial lymphocytes, and disrupts the myenteric plexus, with higher densities of extraganglionic neurons in exposed animals.
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Affiliation(s)
- I C C S Oliveira
- UNESP, São Paulo State University, Institute of Biosciences, Paulista Coast Campus (CLP), São Vicente, SP, Brazil.
| | - G P Marinsek
- UNESP, São Paulo State University, Institute of Biosciences, Paulista Coast Campus (CLP), São Vicente, SP, Brazil
| | - A R N Gonçalves
- UNESP, São Paulo State University, Institute of Biosciences, Paulista Coast Campus (CLP), São Vicente, SP, Brazil
| | - B S Lopes
- UNESP, São Paulo State University, Institute of Biosciences, Paulista Coast Campus (CLP), São Vicente, SP, Brazil
| | - L V B Correia
- UNIFESP, Federal University of São Paulo, Institute of Health and Society, Baixada Santista Campus, Santos, SP, Brazil
| | - R C B Da Silva
- UNIFESP, Federal University of São Paulo, Institute of Health and Society, Baixada Santista Campus, Santos, SP, Brazil
| | - I B Castro
- UNIFESP, Federal University of São Paulo, Institute of Marine Science, Baixada Santista Campus, Santos, SP, Brazil
| | - R B Mari
- UNESP, São Paulo State University, Institute of Biosciences, Paulista Coast Campus (CLP), São Vicente, SP, Brazil
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Oliveira ICCS, Marinsek GP, Correia LVB, da Silva RCB, Castro IB, Mari RB. Tributyltin (TBT) toxicity: Effects on enteric neuronal plasticity and intestinal barrier of rats' duodenum. Auton Neurosci 2024; 253:103176. [PMID: 38669866 DOI: 10.1016/j.autneu.2024.103176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 03/20/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024]
Abstract
Tributyltin (TBT) is a biocide used in the formulation of antifouling paints and it is highly harmful. Despite the ban, the compound persists in the environment, contaminating marine foodstuffs and household products. Therefore, considering the route of exposure to the contaminant, the gastrointestinal tract (GIT) acts as an important barrier against harmful substances and is a potential biomarker for understanding the consequences of these agents. This work aimed to evaluate histological and neuronal alterations in the duodenum of male Wistar rats that received 20 ng/g TBT and 600 ng/g via gavage for 30 consecutive days. After the experimental period, the animals were euthanized, and the duodenum was intended for neuronal histochemistry (total and metabolically active populations) and histological routine (morphometry and histopathology). The results showed more severe changes in neuronal density and intestinal morphometry in rats exposed to 20 ng/g, such as total neuronal density decrease and reduction of intestinal layers. In rats exposed to 600 ng/g of TBT, it was possible to observe only an increase in intraepithelial lymphocytes. We conclude that TBT can be more harmful to intestinal homeostasis when consumed in lower concentrations.
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Affiliation(s)
- I C C S Oliveira
- UNESP- São Paulo State University, Institute of Biosciences, Paulista Coast Campus (CLP), São Vicente, SP, Brazil.
| | - G P Marinsek
- UNESP- São Paulo State University, Institute of Biosciences, Paulista Coast Campus (CLP), São Vicente, SP, Brazil.
| | - L V B Correia
- UNIFESP- Federal University of São Paulo, Institute of Health and Society, Baixada Santista Campus, Santos, SP, Brazil
| | - R C B da Silva
- UNIFESP- Federal University of São Paulo, Institute of Health and Society, Baixada Santista Campus, Santos, SP, Brazil
| | - I B Castro
- UNIFESP- Federal University of São Paulo, Institute of Marine Science, Baixada Santista Campus, Santos, SP, Brazil.
| | - R B Mari
- UNESP- São Paulo State University, Institute of Biosciences, Paulista Coast Campus (CLP), São Vicente, SP, Brazil.
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Marinsek GP, de Oliveira ICCDS, Ribeiro CC, Gusso-Choueri PK, Choueri RB, Abessa DMDS, Mari RDB. Multiple biomarkers in pufferfish as a proxy of environmental health in brazilian marine protected areas. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169742. [PMID: 38163587 DOI: 10.1016/j.scitotenv.2023.169742] [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: 07/06/2023] [Revised: 12/23/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
Marine Protected Areas (MPAs) are designed to conserve biodiversity and vulnerable ecosystems. This study aimed to assess the environmental quality of three Brazilian MPAs, based on the integrated analysis of biomarkers in pufferfish. The MPAs are differentiated by the degree of anthropogenic influences. The Barra do Una Estuary sustainable reserve (JUR) is a reference area due to its low levels of contamination and species diversity. The Cananéia Estuarine System (CAN) has been recognized as a biosphere reserve by UNESCO, as well as a Ramsar wetland. This MPA was influenced by upstream mining activities, resulting in the introduction of metals in the estuarine waters and the discharge of untreated urban sewage. The São Vicente estuary (SSV) lacks proper sanitation infrastructure. All collections were conducted during winter season, and, after collection, the animals were euthanized, their soft tissues were removed, and multiple biomarkers were analyzed in the gills and liver, as biometric, genotoxic, biochemical, and morphological. A one-factor multivariate analysis was applied to evaluate the differences between the data sets, and the matrices were analyzed using PERMANOVA to evaluate the "estuary" factor. The results were integrated using PCA with a 0.4 cut value and an Enhanced Integrated Biomarker Response (EIBR) was calculated. PCA was correlated with biochemical, genotoxic, and morphological biomarkers. In general, SVV differed from CAN and JUR as shown by both univariate and multivariate analyses. SVV also showed the highest EIBR, followed by CAN. Organisms from SSV showed greater gill pathology, elevated AChE activity and lipoperoxidation (LPO), and micronuclei frequency. CAN present intermediate EIBR, with severe pathologies in the liver. CAN seems to present an intermediate environmental quality between SSV and JUR indicating the importance of the existence of MPAs for environmental conservation and the need to monitor such areas, to maintain their suitable environmental quality.
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Affiliation(s)
| | | | - Caio César Ribeiro
- São Paulo State University (Unesp), Institute of Biosciences, São Vicente, Brazil
| | | | | | | | - Renata de Britto Mari
- São Paulo State University (Unesp), Institute of Biosciences, São Vicente, Brazil; São Paulo State University (Unesp), Institute for Advanced Studies of Ocean, São Vicente, Brazil
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Liu S, Luo L, Zuo F, Huang X, Zhong L, Liu S, Geng Y, Ou Y, Chen D, Cai W, Deng Y. Ammonia nitrogen stress damages the intestinal mucosal barrier of yellow catfish ( Pelteobagrus fulvidraco) and induces intestinal inflammation. Front Physiol 2023; 14:1279051. [PMID: 37791345 PMCID: PMC10542119 DOI: 10.3389/fphys.2023.1279051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 09/04/2023] [Indexed: 10/05/2023] Open
Abstract
Nitrogen from ammonia is one of the most common pollutants toxics to aquatic species in aquatic environment. The intestinal mucosa is one of the key mucosal defenses of aquatic species, and the accumulation of ammonia nitrogen in water environment will cause irreversible damage to intestinal function. In this study, histology, immunohistochemistry, ultrastructural pathology, enzyme activity analysis and qRT-PCR were performed to reveal the toxic effect of ammonia nitrogen stress on the intestine of Pelteobagrus fulvidraco. According to histological findings, ammonia nitrogen stress caused structural damage to the intestine and reduced the number of mucous cells. Enzyme activity analysis revealed that the activity of bactericidal substances (Lysozyme, alkaline phosphatase, and ACP) had decreased. The ultrastructure revealed sparse and shortened microvilli as well as badly degraded tight junctions. Immunohistochemistry for ZO-1 demonstrated an impaired intestinal mucosal barrier. Furthermore, qRT-PCR revealed that tight junction related genes (ZO-1, Occludin, Claudin-1) were downregulated, while the pore-forming protein Claudin-2 was upregulated. Furthermore, as ammonia nitrogen concentration grew, so did the positive signal of Zap-70 (T/NK cell) and the expression of inflammation-related genes (TNF, IL-1β, IL-8, IL-10). In light of the above findings, we conclude that ammonia nitrogen stress damages intestinal mucosal barrier of Pelteobagrus fulvidraco and induces intestinal inflammation.
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Affiliation(s)
- Senyue Liu
- Fisheries Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, China
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Lin Luo
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Fengyuan Zuo
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xiaoli Huang
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Liang Zhong
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
- State Key Lab of Marine Pollution, Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Sha Liu
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yi Geng
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yangping Ou
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Defang Chen
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Wenlong Cai
- State Key Lab of Marine Pollution, Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Yongqiang Deng
- Fisheries Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, China
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Makowska K, Fagundes KRC, Gonkowski S. Influence of bisphenol A and its analog bisphenol S on cocaine- and amphetamine-regulated transcript peptide-positive enteric neurons in the mouse gastrointestinal tract. Front Mol Neurosci 2023; 16:1234841. [PMID: 37675141 PMCID: PMC10477371 DOI: 10.3389/fnmol.2023.1234841] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 08/08/2023] [Indexed: 09/08/2023] Open
Abstract
Introduction Bisphenol A (BPA) is used in large quantities for the production of plastics and is present in various everyday objects. It penetrates living organisms and shows multidirectional adverse influence on many internal organs. For this reason, BPA is often replaced in plastic production by other substances. One of them is bisphenol S (BPS), whose effects on the enteric nervous system (ENS) have not been explained. Methods Therefore, the present study compares the influence of BPA and BPS on the number of enteric neurons immunoreactive to cocaine-and amphetamine-regulated transcript (CART) peptide located in the ENS of the stomach, jejunum and colon with the use of double immunofluorescence method. Results The obtained results have shown that both bisphenols studied induced an increase in the number of CART-positive enteric neurons, and the severity of changes depended on the type of enteric ganglion, the dose of bisphenols and the segment of the digestive tract. The most visible changes were noted in the myenteric ganglia in the colon. Moreover, in the colon, the changes submitted by BPS are more noticeable than those observed after BPA administration. In the stomach and jejunum, bisphenol-induced changes were less visible, and changes caused by BPS were similar or less pronounced than those noted under the impact of BPA, depending on the segment of the gastrointestinal tract and ganglion type studied. Discussion The results show that BPS affects the enteric neurons containing CART in a similar way to BPA, and the BPS impact is even stronger in the colon. Therefore, BPS is not neutral for the gastrointestinal tract and ENS.
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Affiliation(s)
- Krystyna Makowska
- Department of Clinical Diagnostics, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Kainã R. C. Fagundes
- Laboratório de Morfofisiologia Animal, Instituto de Biociências, Universidade Estadual Paulista, São Paulo, Brazil
| | - Sławomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
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Santos SG, Souza MCO, Barbosa-Junior F, Prodocimo MM, Marcondes FR, Almeida W, Cestari MM, Souza-Bastos LR, Martino-Andrade AJ, Guiloski IC. Evaluation of the toxicity of di-iso-pentyl-phthalate (DiPeP) using the fish Danio rerio as an experimental model. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:27996-28009. [PMID: 36385344 DOI: 10.1007/s11356-022-24071-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
The presence of phthalates constitutes a risk to the health of aquatic environments and organisms. This work aimed to evaluate the toxic effects of di-iso-pentyl-phthalate (DiPeP) at environmentally relevant concentrations of 5, 25, and 125 µg/L in Danio rerio after subchronic exposure for 14 days. DiPeP altered the antioxidant system in the liver (125 μg/L), intestine (25 μg/L), brain, and gills in all concentrations tested. In animals exposed to 125 μg/L, DNA damage was identified in the gills. In addition, loss of cell boundary of hepatocytes, vascular congestion, necrosis in the liver, and presence of immune cells in the intestinal lumen were observed. Erythrocytic nuclear alterations in the blood occurred in animals exposed to 25 μg/L. DiPeP was quantified in muscle tissue at all exposure concentrations, appearing in a concentration-dependent manner. Contaminants such as DiPeP will still be used for a long time, mainly by industries, being a challenge for industry versus environmental health.
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Affiliation(s)
- Sheila Gabriel Santos
- Instituto de Pesquisa Pelé Pequeno Príncipe, Avenida Silva Jardim, Água Verde, 80.250-200, 1632, Curitiba, PR, Brasil
- Faculdades Pequeno Príncipe, Curitiba, PR, Brasil
| | - Marília Cristina Oliveira Souza
- Laboratório de Toxicologia Analítica e de Sistemas (ASTox), Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brasil
| | - Fernando Barbosa-Junior
- Laboratório de Toxicologia Analítica e de Sistemas (ASTox), Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brasil
| | - Maritana Mela Prodocimo
- Departamento de Biologia Celular e Molecular, Universidade Federal Do Paraná (UFPR), Setor de Ciências Biológicas, Curitiba, PR, Brasil
| | - Fellip Rodrigues Marcondes
- Departamento de Genética, Universidade Federal do Paraná (UFPR), Setor de Ciências Biológicas, Curitiba, PR, Brasil
| | - William Almeida
- Departamento de Genética, Universidade Federal do Paraná (UFPR), Setor de Ciências Biológicas, Curitiba, PR, Brasil
| | - Marta Margarete Cestari
- Departamento de Genética, Universidade Federal do Paraná (UFPR), Setor de Ciências Biológicas, Curitiba, PR, Brasil
| | | | - Anderson Joel Martino-Andrade
- Departamento de Fisiologia, Universidade Federal do Paraná (UFPR), Setor de Ciências Biológicas, Curitiba, PR, Brasil
| | - Izonete Cristina Guiloski
- Instituto de Pesquisa Pelé Pequeno Príncipe, Avenida Silva Jardim, Água Verde, 80.250-200, 1632, Curitiba, PR, Brasil.
- Faculdades Pequeno Príncipe, Curitiba, PR, Brasil.
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Ren H, Zhao L. Demonstration and Suggestion on the Communication Efficiency of New Media of Environmental Education Based on Ideological and Political Education. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1569. [PMID: 36674324 PMCID: PMC9863358 DOI: 10.3390/ijerph20021569] [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: 12/17/2022] [Revised: 12/31/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
With the rapid development of the economy, we are facing more and more problems, and the construction of ecological civilization has become the focus of our national concern. With the rapid development of network technology, the immediacy of the new media and the huge audience have brought new development trends to the dissemination of environmental information. The number of new environmental media is increasing, but there are still some problems, such as formality, rigid content and lack of innovation, which make it difficult to achieve better communication effects. However, the research on new environmental media is still in its infancy, and there is not yet a set of targeted and specialized new media evaluation systems. Based on the social function of new environmental news media and the social responsibility of media as the entry point, the article establishes a set of index systems to measure the efficiency of environmental news dissemination and proposes corresponding improvement measures accordingly. The results of the study show that the best use of environmental education publicity is at 81.3%. In terms of cognitive efficiency and attitudinal efficacy, the scores of environmental education weibo public numbers were not high, at 60.7% and 71.5%, respectively. From the perspective of ideological and political education, the environmental protection class of WeChat plays a good role in attracting the attention of college students, and can provide ideological and political education to them and improve their ideological awareness. In terms of cognition, new media is responsible for conveying environmental knowledge and concepts to college students, so the development of new media centers on environmental information, and the content directly affects the cognitive level of college students, fully reflecting the importance of cognitive efficacy in new media of environmental education. On attitude efficacy, only one indicator is set for identity shaping, which has the highest score, but the lowest is 4.0, showing that the public number is still not obvious enough in terms of identifying with college student groups, influencing college students' emotions and attitudes. Based on this, this paper points out the problems of the current communication efficiency of environmental education new media through the analysis of the evaluation results and puts forward suggestions to improve its communication efficiency in this regard.
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Affiliation(s)
- Huiyu Ren
- School of Marxism, Wenzhou University, Wenzhou 325035, China
| | - Liang Zhao
- School of Tourism, Hubei University, Wuhan 430062, China
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Marinsek GP, Choueri PKG, Choueri RB, de Souza Abessa DM, Gonçalves ARN, Bortolotto LB, de Britto Mari R. Integrated analysis of fish intestine biomarkers: Complementary tools for pollution assessment. MARINE POLLUTION BULLETIN 2022; 178:113590. [PMID: 35367694 DOI: 10.1016/j.marpolbul.2022.113590] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/17/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
The gastrointestinal tract and its enteric nervous system are the first routes of food and xenobiotics uptake. Considering the importance of this organ, this study evaluated intestinal biomarkers of Sphoeroides testudineus integrating the data to generate tools for pollution assessment. The fish were collected in three sites of São Paulo Coast and their intestines were analyzed for biochemical, histology, and neuronal density and morphometry biomarkers. To evaluate the differences among the data, a PERMANOVA was applied, followed by a FA/PCA. The PERMANOVA indicated differences (P < 0.001) between the regions (RA, A1, and A2). Four factors were extracted from the FA/PCA (62% cumulative), showing that the animals from A2 presented severe alterations, mainly in intestinal morphometry and neuronal density. A1 alterations refer mainly to the increase of neuronal metabolism. Our results also evidence a gradient of environmental quality related to the protection level (AR > A1 > A2).
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Affiliation(s)
- Gabriela Pustiglione Marinsek
- São Paulo State University (Unesp), Coastal Campus, Department of Biological and Environmental Sciences, Animal Morphophysiology Laboratory, São Vicente, Brazil; São Paulo State University (Unesp), Institute for Advanced Studies of Ocean, São Vicente, Brazil.
| | - Paloma Kachel Gusso Choueri
- São Paulo State University (Unesp), Coastal Campus, Department of Biological and Environmental Sciences, Research Group on Pollution and Aquatic Ecotoxicology, São Vicente, Brazil; Ecotoxicology Laboratory - Unisanta, Universidade Santa Cecília, R. Oswaldo Cruz, 277 - CP 11045-907 - Boqueirão, Santos - SP, Brazil
| | - Rodrigo Brasil Choueri
- Federal University of São Paulo, Baixada Santista Campus, Department of Marine Sciences, Institute of the Sea, Brazil
| | - Denis Moledo de Souza Abessa
- São Paulo State University (Unesp), Coastal Campus, Department of Biological and Environmental Sciences, Research Group on Pollution and Aquatic Ecotoxicology, São Vicente, Brazil
| | - Alexandre Rodrigo Nascimento Gonçalves
- São Paulo State University (Unesp), Coastal Campus, Department of Biological and Environmental Sciences, Animal Morphophysiology Laboratory, São Vicente, Brazil
| | - Lorihany Bogo Bortolotto
- São Paulo State University (Unesp), Coastal Campus, Department of Biological and Environmental Sciences, Animal Morphophysiology Laboratory, São Vicente, Brazil
| | - Renata de Britto Mari
- São Paulo State University (Unesp), Coastal Campus, Department of Biological and Environmental Sciences, Animal Morphophysiology Laboratory, São Vicente, Brazil; São Paulo State University (Unesp), Institute for Advanced Studies of Ocean, São Vicente, Brazil
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Nanni W, Porto GDS, Pereira JNB, Gonçalves ARN, Marinsek GP, Stabille SR, Favetta PM, Germano RDM, Mari RDB. Evaluation of myenteric neurons in the colon of rats exposed to 2,4 dichlorophenoxyacetic acid herbicide. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2022; 57:421-429. [PMID: 35440284 DOI: 10.1080/03601234.2022.2064674] [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] [Indexed: 06/14/2023]
Abstract
The assessment of the enteric nervous system provides a better understanding of the effects that contaminants can have on the health and well-being of organisms. It has been reported that 2,4-dichlorophenoxyacetic acid (2,4-D) is a highly persistent herbicide in the environment that is responsible for neurotoxic changes in different myenteric neuronal subpopulations. The current study aimed to evaluate the effects of 2,4-D on myenteric neurons in the colon of Rattus norvegicus for the first time. A dose of 2,4-D (5 mg/kg/day) was administered to the experimental group (2,4-D) for 15 days. Then, the proximal colon was collected and submitted to Giemsa and NADPH-d histochemical techniques for the disclosure of total and nitrergic neurons. The 2,4-D group presented a higher density of total neurons (p = 0.05, t-test), which together with the maintenance of nitrergic neuronal density, may be related to the increase in the expression of the neurotransmitter acetylcholine by colocalization, responsible for stimulating the intestinal smooth muscle and increasing the chances of the expulsion of the harmful content present in the lumen. Over 15 days, the neurotoxic effects of 2,4-D in the myenteric plexus influenced an increase in the general population of myenteric neurons in the colon.
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Affiliation(s)
- Wagner Nanni
- Post-graduate Programme in Animal Science, Universidade Paranaense, Umuarama, Paraná, Brazil
| | - Gisele da Silva Porto
- Laboratory of Animal Virology, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | | | | | | | - Sandra Regina Stabille
- Post-graduate Programme in Animal Science, Universidade Paranaense, Umuarama, Paraná, Brazil
| | | | - Ricardo de Melo Germano
- Post-graduate Programme in Animal Science, Universidade Paranaense, Umuarama, Paraná, Brazil
| | - Renata de Britto Mari
- Department of Biological and Environmental Sciences, São Paulo State University (UNESP), São Paulo, Brazil
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da Silva LF, Nobre CR, Moreno BB, Pereira CDS, de Souza Abessa DM, Choueri RB, Gusso-Choueri PK, Cesar A. Non-destructive biomarkers can reveal effects of the association of microplastics and pharmaceuticals or personal care products. MARINE POLLUTION BULLETIN 2022; 177:113469. [PMID: 35248887 DOI: 10.1016/j.marpolbul.2022.113469] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 01/17/2022] [Accepted: 02/14/2022] [Indexed: 06/14/2023]
Abstract
Methods to assess the effects of contaminants on marine organisms typically involve euthanasia to obtain samples, but less invasive techniques may be more appropriate for working with threatened species. In this study, were assessed the biological responses of crabs exposed to microplastics and contaminants of emerging concern. Biochemical and cellular effects (lipid peroxidation, DNA damage, cholinesterase activity, and lysosomal membrane stability) in hemolymph were analyzed in a kinetic study, at 3 and 7 days, in U. cordatus exposed to microplastics spiked with Triclosan (TCS) or 17α-Ethynylestradiol (EE2). The results showed that the contaminants were produced toxic effects in the crabs exposed either to the microplastics alone (oxidative stress, genotoxicity, and neurotoxicity), or to microplastics with TCS or EE2 adsorbed (neurotoxic and cytotoxic). The present study showed the responsiveness of non-lethal analyzes to understanding the biological effects of combined exposure to microplastics and chemical pollution.
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Affiliation(s)
- Letícia Fernanda da Silva
- Department of Ocean Sciences, Sea Institute, Federal University of São Paulo (CBS-Unifesp), Rua Carvalho de Mendonça, 144, 11070-102, Santos, São Paulo, Brazil
| | - Caio Rodrigues Nobre
- Biosciences Institute, São Paulo State University (CLP-Unesp), Praça Infante Dom Henrique, s/n, Parque Bitaru, São Vicente, São Paulo, Brazil.
| | - Beatriz Barbosa Moreno
- Department of Ocean Sciences, Sea Institute, Federal University of São Paulo (CBS-Unifesp), Rua Carvalho de Mendonça, 144, 11070-102, Santos, São Paulo, Brazil
| | - Camilo Dias Seabra Pereira
- Department of Ocean Sciences, Sea Institute, Federal University of São Paulo (CBS-Unifesp), Rua Carvalho de Mendonça, 144, 11070-102, Santos, São Paulo, Brazil; Ecotoxicology Laboratory, Santa Cecília University (Unisanta), Rua Oswaldo Cruz, 266, 11045-907, Santos, São Paulo, Brazil
| | - Denis Moledo de Souza Abessa
- Biosciences Institute, São Paulo State University (CLP-Unesp), Praça Infante Dom Henrique, s/n, Parque Bitaru, São Vicente, São Paulo, Brazil
| | - Rodrigo Brasil Choueri
- Department of Ocean Sciences, Sea Institute, Federal University of São Paulo (CBS-Unifesp), Rua Carvalho de Mendonça, 144, 11070-102, Santos, São Paulo, Brazil
| | - Paloma Kachel Gusso-Choueri
- Biosciences Institute, São Paulo State University (CLP-Unesp), Praça Infante Dom Henrique, s/n, Parque Bitaru, São Vicente, São Paulo, Brazil; Ecotoxicology Laboratory, Santa Cecília University (Unisanta), Rua Oswaldo Cruz, 266, 11045-907, Santos, São Paulo, Brazil
| | - Augusto Cesar
- Department of Ocean Sciences, Sea Institute, Federal University of São Paulo (CBS-Unifesp), Rua Carvalho de Mendonça, 144, 11070-102, Santos, São Paulo, Brazil
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Gonçalves ARN, Marinsek GP, de Souza Abessa DM, de Britto Mari R. Adaptative responses of myenteric neurons of Sphoeroides testudineus to environmental pollution. Neurotoxicology 2019; 76:84-92. [PMID: 31669307 DOI: 10.1016/j.neuro.2019.10.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 10/11/2019] [Accepted: 10/22/2019] [Indexed: 01/13/2023]
Abstract
Contamination in estuarine regions affects the local biota damaging the ecosystems and reaching humans. The gastrointestinal tract is a dynamic environment capable of obtaining nutrients and energy from food while it protects the host against harmful toxins and pathogens from the external environment. These functions are modulated by the enteric nervous system and changes in its structure can result in gastrointestinal disorders. The objective of this study was to evaluate if the environmental contaminants have effects on the myenteric neuronal plasticity of pufferfish Sphoeroides testudineus. Animals were collected in Barra do Una River, located at Jureia-Itatins Mosaic of Protected Areas (reference area - RA) and in the Santos Estuarine System (impacted area - IA). Morpho-quantitative analyses of the general and metabolically active myenteric neuronal populations of the proximal and distal intestine were made. Disarrangement was observed in the general organization of the myenteric plexus, with an expressive reduction of the neuronal groups (nodes) in the animals of IA. The vulnerability of the myenteric plexus was evidenced by a decrease in density and cellular profile of the general neuronal population, followed by an increase of the metabolism of the remaining neurons, which in turn was verified by a growth of the area of the cellular and nuclear profiles of the metabolically active neuronal population. Through these analyses, we concluded that animals inhabiting polluted regions present alterations in the myenteric neuronal plasticity, as a way of maintaining the functions of the gastrointestinal tract.
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Affiliation(s)
| | - Gabriela Pustiglione Marinsek
- São Paulo State University - Coastal Campus, Laboratório de Morfofisiologia Animal (LABMA), Sao Vicente, Sao Paulo, Brazil
| | - Denis Moledo de Souza Abessa
- São Paulo State University - Coastal Campus, Núcleo de Estudos em Poluição e Ecotoxcologia Aquática (NEPEA), Sao Vicente, Sao Paulo, Brazil
| | - Renata de Britto Mari
- São Paulo State University - Coastal Campus, Laboratório de Morfofisiologia Animal (LABMA), Sao Vicente, Sao Paulo, Brazil
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