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Mohanty S, Paul A, Banerjee S, Rajendran KV, Tripathi G, Das PC, Sahoo PK. Ultrastructural, molecular and haemato-immunological changes: Multifaceted toxicological effects of microcystin-LR in rohu, Labeo rohita. CHEMOSPHERE 2024; 358:142097. [PMID: 38657687 DOI: 10.1016/j.chemosphere.2024.142097] [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: 01/15/2024] [Revised: 04/17/2024] [Accepted: 04/19/2024] [Indexed: 04/26/2024]
Abstract
No water body is resilient to afflicts of algal bloom, if goes unmanaged. With the increasing trend of intensification, eutrophication and climate change, Labeo rohita (rohu) is highly anticipated to suffer from the deleterious effects of bloom and eventually its toxins. A comprehensive study was conducted to understand the toxicopathological effects of microcystin-LR (MC-LR) in rohu following intraperitoneal injection of 96 h-LD50 dose i.e., 713 μg kg-1. Substantial changes in micro- and ultrastructural level were evident in histopathology and transmission electron microscope (TEM) study. The haematological, biochemical, cellular and humoral innate immune biomarkers were significantly altered (p < 0.05) in MC-LR treated fish. The mRNA transcript levels of IL-1β, IL-10, IgM and IgZ in liver and kidney tissues were significantly up-regulated in 12 hpi and declined in 96 hpi MC-LR exposed fish. The relative mRNA expression of caspase 9 in the liver and kidney indicates mitochondrial-mediated apoptosis which was strongly supported by TEM study. In a nutshell, our study illustrates for the first time MC-LR induced toxicological implications in rohu displaying immunosuppression, enhanced oxidative stress, pathophysiology, modulation in mRNA transcription, genotoxicity, structural and ultrastructural alterations signifying it as a vulnerable species for MC-LR intoxication.
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Affiliation(s)
- Snatashree Mohanty
- ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar, 751 002, India
| | - Anirban Paul
- ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar, 751 002, India
| | | | - K V Rajendran
- ICAR- Central Institute of Fisheries Education, Mumbai, India; Central University of Kerala, Kasaragod, 671 316, India
| | | | - Pratap Chandra Das
- ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar, 751 002, India
| | - Pramoda Kumar Sahoo
- ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar, 751 002, India.
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Jia W, Zhong L, Ren Q, Teng D, Gong L, Dong H, Li J, Wang C, He YX, Yang J. Microcystin-RR promote lipid accumulation through CD36 mediated signal pathway and fatty acid uptake in HepG2 cells. ENVIRONMENTAL RESEARCH 2024; 249:118402. [PMID: 38309560 DOI: 10.1016/j.envres.2024.118402] [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: 11/20/2023] [Revised: 01/19/2024] [Accepted: 02/01/2024] [Indexed: 02/05/2024]
Abstract
Microcystins (MC)-RR is a significant analogue of MC-LR, which has been identified as a hepatotoxin capable of influencing lipid metabolism and promoting the progression of liver-related metabolic diseases. However, the toxicity and biological function of MC-RR are still not well understood. In this study, the toxic effects and its role in lipid metabolism of MC-RR were investigated in hepatoblastoma cells (HepG2cells). The results demonstrated that MC-RR dose-dependently reduced cell viability and induced apoptosis. Additionally, even at low concentrations, MC-RR promoted lipid accumulation through up-regulating levels of triglyceride, total cholesterol, phosphatidylcholines and phosphatidylethaolamine in HepG2 cells, with no impact on cell viability. Proteomics and transcriptomics analysis further revealed significant alterations in the protein and gene expression profiles in HepG2 cells treated with MC-RR. Bioinformatic analysis, along with subsequent validation, indicated the upregulation of CD36 and activation of the AMPK and PI3K/AKT/mTOR in response to MC-RR exposure. Finally, knockdown of CD36 markedly ameliorated MC-RR-induced lipid accumulation in HepG2 cells. These findings collectively suggest that MC-RR promotes lipid accumulation in HepG2 cells through CD36-mediated signal pathway and fatty acid uptake. Our findings provide new insights into the hepatotoxic mechanism of MC-RR.
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Affiliation(s)
- Wenjuan Jia
- School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, China; Department of Cardiology, Yantai Yuhuangding Hospital, Qingdao University, Yantai, 264000, China.
| | - Lin Zhong
- School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, China; Department of Cardiology, Yantai Yuhuangding Hospital, Qingdao University, Yantai, 264000, China
| | - Qingmiao Ren
- The Precision Medicine Laboratory, The First Hospital of Lanzhou University, Lanzhou, 730000, China
| | - Da Teng
- School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, China; Department of Cardiology, Yantai Yuhuangding Hospital, Qingdao University, Yantai, 264000, China
| | - Lei Gong
- Department of Cardiology, Yantai Yuhuangding Hospital, Qingdao University, Yantai, 264000, China
| | - Haibin Dong
- Department of Cardiology, Yantai Yuhuangding Hospital, Qingdao University, Yantai, 264000, China
| | - Jun Li
- School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, China; Department of Cardiology, Yantai Yuhuangding Hospital, Qingdao University, Yantai, 264000, China
| | - Chunxiao Wang
- Department of Cardiology, Yantai Yuhuangding Hospital, Qingdao University, Yantai, 264000, China
| | - Yong-Xing He
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China.
| | - Jun Yang
- Department of Cardiology, Yantai Yuhuangding Hospital, Qingdao University, Yantai, 264000, China.
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Langan LM, Lovin LM, Taylor RB, Scarlett KR, Kevin Chambliss C, Chatterjee S, Scott JT, Brooks BW. Proteome changes in larval zebrafish (Danio rerio) and fathead minnow (Pimephales promelas) exposed to (±) anatoxin-a. ENVIRONMENT INTERNATIONAL 2024; 185:108514. [PMID: 38394915 DOI: 10.1016/j.envint.2024.108514] [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: 12/15/2023] [Revised: 02/16/2024] [Accepted: 02/17/2024] [Indexed: 02/25/2024]
Abstract
Anatoxin-a and its analogues are potent neurotoxins produced by several genera of cyanobacteria. Due in part to its high toxicity and potential presence in drinking water, these toxins pose threats to public health, companion animals and the environment. It primarily exerts toxicity as a cholinergic agonist, with high affinity at neuromuscular junctions, but molecular mechanisms by which it elicits toxicological responses are not fully understood. To advance understanding of this cyanobacteria, proteomic characterization (DIA shotgun proteomics) of two common fish models (zebrafish and fathead minnow) was performed following (±) anatoxin-a exposure. Specifically, proteome changes were identified and quantified in larval fish exposed for 96 h (0.01-3 mg/L (±) anatoxin-a and caffeine (a methodological positive control) with environmentally relevant treatment levels examined based on environmental exposure distributions of surface water data. Proteomic concentration - response relationships revealed 48 and 29 proteins with concentration - response relationships curves for zebrafish and fathead minnow, respectively. In contrast, the highest number of differentially expressed proteins (DEPs) varied between zebrafish (n = 145) and fathead minnow (n = 300), with only fatheads displaying DEPs at all treatment levels. For both species, genes associated with reproduction were significantly downregulated, with pathways analysis that broadly clustered genes into groups associated with DNA repair mechanisms. Importantly, significant differences in proteome response between the species was also observed, consistent with prior observations of differences in response using both behavioral assays and gene expression, adding further support to model specific differences in organismal sensitivity and/or response. When DEPs were read across from humans to zebrafish, disease ontology enrichment identified diseases associated with cognition and muscle weakness consistent with the prior literature. Our observations highlight limited knowledge of how (±) anatoxin-a, a commonly used synthetic racemate surrogate, elicits responses at a molecular level and advances its toxicological understanding.
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Affiliation(s)
- Laura M Langan
- Department of Environmental Science, Baylor University, Waco, TX 76798, USA; Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX 76798, USA; Department of Environmental Health Sciences, University of South Carolina, Columbia, SC 29208, USA.
| | - Lea M Lovin
- Department of Environmental Science, Baylor University, Waco, TX 76798, USA; Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX 76798, USA; Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Raegyn B Taylor
- Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX 76798, USA; Department of Chemistry, Baylor University, Waco, TX 76798, USA
| | - Kendall R Scarlett
- Department of Environmental Science, Baylor University, Waco, TX 76798, USA; Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX 76798, USA
| | - C Kevin Chambliss
- Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX 76798, USA; Department of Chemistry, Baylor University, Waco, TX 76798, USA
| | - Saurabh Chatterjee
- Department of Medicine, Department of Environmental and Occupational Health, University of California Irvine, Irvine, CA 92617, USA
| | - J Thad Scott
- Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX 76798, USA; Department of Biology, Baylor University, Waco, TX 76798, USA
| | - Bryan W Brooks
- Department of Environmental Science, Baylor University, Waco, TX 76798, USA; Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX 76798, USA.
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Veerabadhran M, Manivel N, Sarvalingam B, Seenivasan B, Srinivasan H, Davoodbasha M, Yang F. State-of-the-art review on the ecotoxicology, health hazards, and economic loss of the impact of microcystins and their ultrastructural cellular changes. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 256:106417. [PMID: 36805195 DOI: 10.1016/j.aquatox.2023.106417] [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: 09/03/2022] [Revised: 11/30/2022] [Accepted: 01/04/2023] [Indexed: 06/18/2023]
Abstract
Cyanobacteria are ubiquitously globally present in both freshwater and marine environments. Ample reports have been documented by researchers worldwide for pros and cons of cyanobacterial toxins. The implications of cyanobacterial toxin on health have received much attention in recent decades. Microcystins (MCs) represent the unique class of toxic metabolites produced by cyanobacteria. Although the beneficial aspects of cyanobacterial are numerous, the deleterious effect of MCs overlooked. Several studies on MCs evidently reported that MCs exhibit a plethora of harmful effect on animals, plants, and cell lines. Accordingly, numerous histopathological studies have also found that MCs cause detrimental effects to cells by damaging cellular organelles, including nuclear envelope, Golgi apparatus, endoplasmic reticulum, mitochondria, plastids, flagellum, pilus membrane structures and integrity, vesicle structures, and autolysosomes and autophagosomes. Such ultrastructural cellular damages holistically influence the morphological, biochemical, physiological, and genetic status of the host. Indeed, MCs have also been found to cause the deleterious effect to different animals and plants. Such deleterious effects of MCs have greater impact on agriculture, public health which in turn influences ecotoxicology and economic consequences. The impairments correspond to oxidative stress, organ failure, carcinogenesis, aquaculture loss, with an emphasis for blooms and respective bioaccumulation prospects. The preservation of mortality among life forms is addressed in a critical cellular perspective for multitude benefits. The comprehensive cellular assessment could provide opportunity to develop strategy for therapeutic implications.
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Affiliation(s)
- Maruthanayagam Veerabadhran
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, University of South China, Hengyang, China; Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Hunan 410078, China
| | - Nagarajan Manivel
- ICAR-Central Marine Fisheries Research Institute, Chennai 600 0028, India
| | - Barathkumar Sarvalingam
- National Centre for Coastal Research (NCCR), Ministry of Earth Science, NIOT Campus, Chennai 600100, India
| | - Boopathi Seenivasan
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Chennai, India
| | - Hemalatha Srinivasan
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 600 0048, India
| | - MubarakAli Davoodbasha
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 600 0048, India.
| | - Fei Yang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, University of South China, Hengyang, China.
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Lima TB, Silva-Stenico ME, Fiore MF, Etchegaray A. Microcystins can be extracted from Microcystis aeruginosa using amino acid-derived biosurfactants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:8767-8778. [PMID: 34491500 DOI: 10.1007/s11356-021-16257-4] [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: 09/05/2020] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
Microcystin, a cyanotoxin produced by Microcystis aeruginosa growing in eutrophic waters, can promote liver tumors in people ingesting contaminated water. To date, water treatment systems have not been effective in removing or degrading these cyanotoxins. In this work, we investigated the inhibitory activity of surfactants on the growth of M. aeruginosa and their application to extract the intracellular produced cyanotoxins. The experiments involving growth inhibition and extraction of cyanotoxins were carried out using the non-biodegradable surfactant cetyl trimethyl ammonium bromide (CTAB) in addition to other biodegradable surfactants. These were Tween 80 and surfactants derived from amino acids and peptides, respectively, from arginine, SDA, and hydrolyzed peptone, SDP. We demonstrated that the tested surfactants could be used to inhibit the growth of M. aeruginosa. At this point, CTAB and SDA proved to be the most competent surfactants in reducing cyanobacterial growth. Moreover, microcystins have been successfully removed from the water employing a cloud point extraction protocol based on the use of these surfactants and ammonium sulfate.
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Affiliation(s)
- Tatiani Brenelli Lima
- Center for Exact, Environmental and Technological Sciences, Faculty of Chemistry, Pontifical Catholic University of Campinas, R. Prof. Dr. Euryclides de Jesus Zerbini, 1516, Campinas, SP, 13087-571, Brazil
| | - Maria Estela Silva-Stenico
- Center for Nuclear Energy in Agriculture, University of São Paulo, Av. Centenário, 303, Piracicaba, SP, 13416-903, Brazil
| | - Marli F Fiore
- Center for Nuclear Energy in Agriculture, University of São Paulo, Av. Centenário, 303, Piracicaba, SP, 13416-903, Brazil
| | - Augusto Etchegaray
- Center for Exact, Environmental and Technological Sciences, Faculty of Chemistry, Pontifical Catholic University of Campinas, R. Prof. Dr. Euryclides de Jesus Zerbini, 1516, Campinas, SP, 13087-571, Brazil.
- Center for Life Sciences, Post-Graduate Course in Health Sciences, Pontifical Catholic University of Campinas, R. Prof. Dr. Euryclides de Jesus Zerbini, 1516, Campinas, SP, 13087-571, Brazil.
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6
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da Silva CG, Duque MD, Freire Nordi CS, Viana-Niero C. New insights into toxicity of microcystins produced by cyanobacteria using in silico ADMET prediction. Toxicon 2021; 204:64-71. [PMID: 34742780 DOI: 10.1016/j.toxicon.2021.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/28/2021] [Accepted: 11/01/2021] [Indexed: 11/16/2022]
Abstract
In silico methodologies can be used in the discovery of new drugs for measuring toxicity, predicting effects of substances not yet analyzed by in vivo methodologies. The ADMET Predictor® software (absorption, distribution, metabolism, elimination, and toxicity [ADMET]) was used in this work to predict toxic effects of microcystin variants MC-LR, MC-YR, MC-RR, and MC-HarHar. In the case of rodents, predictive results for all analyzed variants indicated carcinogenic potential. The predictive model of respiratory sensitivity in this group differentiated microcystins into 2 categories: sensitizer (MC-LR and -YR) and non-sensitizer (MC-HarHar and -RR). Predictive results for humans indicated that MC-LR and -RR are phospholipidosis inducers; on the other hand, MC-LR showed the highest predictive value of permeability in rabbit cornea and probability of crossing lipoprotein barriers (MC-LR>-YR>-HarHar>-RR). Considering bioavailable fractions, microcystins are more likely to cause biological effects in rats than humans, showing significant differences between models. The results of ADMET predictions add valuable information on microcystin toxicity, especially in the case of variants not yet studied experimentally.
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Affiliation(s)
- Cristiane Gonçalves da Silva
- Departamento de Microbiologia, Imunologia e Parasitologia [Department of Microbiology, Immunology and Parasitology], Universidade Federal de São Paulo [Federal University of São Paulo], Rua Botucatu, 862, São Paulo, SP, Zip Code: 04023-901, Brazil; Departamento de Ciências Farmacêuticas [Department of Pharmaceutical Sciences], Universidade Federal de São Paulo, Rua São Nicolau, 210, Diadema, SP, Zip Code: 09913-030, Brazil
| | - Marcelo Dutra Duque
- Departamento de Ciências Farmacêuticas [Department of Pharmaceutical Sciences], Universidade Federal de São Paulo, Rua São Nicolau, 210, Diadema, SP, Zip Code: 09913-030, Brazil
| | - Cristina Souza Freire Nordi
- Departamento de Ciências Ambientais [Department of Environmental Sciences], Universidade Federal de São Paulo, Rua Prof. Artur Riedel, 275, Diadema, SP, Zip Code: 09972-270, Brazil.
| | - Cristina Viana-Niero
- Departamento de Microbiologia, Imunologia e Parasitologia [Department of Microbiology, Immunology and Parasitology], Universidade Federal de São Paulo [Federal University of São Paulo], Rua Botucatu, 862, São Paulo, SP, Zip Code: 04023-901, Brazil
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Ma Y, Liu H, Du X, Shi Z, Liu X, Wang R, Zhang S, Tian Z, Shi L, Guo H, Zhang H. Advances in the toxicology research of microcystins based on Omics approaches. ENVIRONMENT INTERNATIONAL 2021; 154:106661. [PMID: 34077854 DOI: 10.1016/j.envint.2021.106661] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 06/12/2023]
Abstract
Microcystins (MCs) are the most widely distributed cyanotoxins, which can be ingested by animals and human body in multiple ways, resulting in a threat to human health and the biodiversity of wildlife. Therefore, the study on toxic effects and mechanisms of MCs is one of the focuses of attention. Recently, the Omics techniques, i.e. genomics, transcriptomics, proteomics and metabolomics, have significantly contributed to the comprehensive understanding and revealing of the molecular mechanisms about the toxicity of MCs. This paper mainly reviews current literature using the Omics approaches to explore the toxicity mechanism of MCs in liver, gonad, spleen, brain, intestine and lung of multiple species. It was found that MCs can exert strong toxic effects on various metabolic activities and cell signal transduction in cell cycle, apoptosis, destruction of cell cytoskeleton and redox disorder, at protein, transcription and metabolism level. Meanwhile, it was also revealed that the alteration of non-coding RNAs (miRNA, circRNA and lncRNA, etc.) and gut microbiota plays an essential regulatory role in the toxic effects of MCs, especially in hepatotoxicity and reproductive toxicity. In addition, we summarized current research gaps and pointed out the future directions for research. The detailed information in this paper shows that the application and development of Omics techniques have significantly promoted the research on MCs toxicity, and it is also a valuable resource for exploring the toxic mechanism of MCs.
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Affiliation(s)
- Ya Ma
- College of Public Health, Zhengzhou University, Zhengzhou, PR China
| | - Haohao Liu
- College of Public Health, Zhengzhou University, Zhengzhou, PR China
| | - Xingde Du
- College of Public Health, Zhengzhou University, Zhengzhou, PR China
| | - Ziang Shi
- Department of Clinical Medicine, Zhengzhou University, Zhengzhou, PR China
| | - Xiaohui Liu
- School of Basic Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, PR China
| | - Rui Wang
- College of Public Health, Zhengzhou University, Zhengzhou, PR China
| | - Shiyu Zhang
- College of Public Health, Zhengzhou University, Zhengzhou, PR China
| | - Zhihui Tian
- College of Public Health, Zhengzhou University, Zhengzhou, PR China
| | - Linjia Shi
- College of Public Health, Zhengzhou University, Zhengzhou, PR China
| | - Hongxiang Guo
- College of Life Sciences, Henan Agricultural University, Zhengzhou, PR China
| | - Huizhen Zhang
- College of Public Health, Zhengzhou University, Zhengzhou, PR China.
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Xiao W, Zhong Q, Sun F, Wang W, Zhao Z, Gu K. Differences in Abnormal Water Metabolism between SD Rats and KM Mice Intoxicated by Microcystin-RR. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18041900. [PMID: 33669356 PMCID: PMC7920292 DOI: 10.3390/ijerph18041900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 01/17/2023]
Abstract
The effects of microcystin-RR (MC-RR) on water metabolism were studied on Sprague–Dawley (SD) rats and KunMing (KM) mice. In the single dose toxicity test, polydipsia, polyuria, hematuria and proteinuria were found in group of rats receiving a MC-RR dose of 574.7 μg/kg, and could be relieved by dexamethasone (DXM). Gradient damage was observed in kidney and liver in rats with gradient MC-RR doses of 574.7, 287.3, and 143.7 μg/kg. No significant water metabolic changes or kidney injuries were observed in mice treated with MC-RR doses of 210.0, 105.0, and 52.5 μg/kg. In the continuous exposure test, in which mice were administrated with 140.0, 70.0, and 35.0 μg/kg MC-RR for 28 days, mice in the 140.0 μg/kg group presented increasing polydipsia, polyuria, and liver damage. However, no anatomic or histological changes, including related serological and urinary indices, were found in the kidney. In summary, abnormal water metabolism can be induced by MC-RR in rats through kidney injury in single dose exposure; the kidney of SD rats is more sensitive to MC-RR than that of KM mouse; and polydipsia and polyuria in mice exposed to MC-RR for 28 days occurred but could not be attributed to kidney damage.
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Paulino MG, Tavares D, Terezan AP, Sakuragui MM, Pesenti E, Giani A, Cestari MM, Fernandes JB, Fernandes MN. Biotransformations, Antioxidant System Responses, and Histopathological Indexes in the Liver of Fish Exposed to Cyanobacterial Extract. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:1041-1051. [PMID: 32102115 DOI: 10.1002/etc.4696] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/18/2019] [Accepted: 02/19/2020] [Indexed: 06/10/2023]
Abstract
Radiocystis fernandoi, a microcystin (MC) producer, has been common in cyanobacterial blooms in tropical regions. Microcystin is a hepatotoxin that causes tissue damage and even death in animals, including humans; its detoxification process may involve biotransformation and activation of the antioxidant defense system. We evaluated the detoxification pathway, examined the antioxidant defense system responses, and determined the alterations and the organ histopathological indexes in the liver of the tropical fish Hoplias malabaricus after acute and subchronic intraperitoneal exposure to microcystin. The crude microcystin extract of R. fernandoi had predominantly MC-RR and MC-YR. The detoxification process was activated by increasing ethoxyresorufin-O-deethylase activity, whereas glutathione S-transferase was inhibited. The activity of the antioxidant defense enzymes superoxide dismutase (SOD) and glutathione peroxidase decreased after acute exposure; the SOD-catalase system and the glutathione level increased after subchronic exposure. The carbonyl protein level, lipid peroxidation (LPO), and DNA damage were unchanged after acute exposure, whereas protein carbonyl was unchanged, LPO decreased, and DNA damage increased after subchronic exposure. Histopathological alteration indexes differed between acute and subchronic exposure, but the histopathological organ indexes indicate liver dysfunction in both exposure periods. We conclude that MC-RR and MC-YR induce different liver responses depending on the time of exposure, and the antioxidant defense responses after subchronic exposure may help to partially restore the liver function. Environ Toxicol Chem 2020;39:1041-1051. © 2020 SETAC.
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Affiliation(s)
- Marcelo Gustavo Paulino
- Department of Physiological Sciences, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Driele Tavares
- Department of Physiological Sciences, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Ana Paula Terezan
- Department of Chemistry, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | | | - Emanuele Pesenti
- Department of Genetics, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - Alessandra Giani
- Department of Botany, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - João Batista Fernandes
- Department of Chemistry, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Marisa Narciso Fernandes
- Department of Physiological Sciences, Federal University of São Carlos, São Carlos, São Paulo, Brazil
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10
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Hachim MY, Hachim IY, Elemam NM, Hamoudi RA. Toxicogenomic analysis of publicly available transcriptomic data can predict food, drugs, and chemical-induced asthma. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2019; 12:181-199. [PMID: 31692590 PMCID: PMC6717055 DOI: 10.2147/pgpm.s217535] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 07/30/2019] [Indexed: 02/04/2023]
Abstract
Background : With the increasing incidence of asthma, more attention is focused on the diverse and complex nutritional and environmental triggers of asthma exacerbations. Currently, there are no established risk assessment tools to evaluate asthma triggering potentials of most of the nutritional and environmental triggers encountered by asthmatic patients. Purpose The objective of this study is to devise a reliable workflow, capable of estimating the toxicogenomic effect of such factors on key player genes in asthma pathogenesis. Methods Gene expression extracted from publicly available datasets of asthmatic bronchial epithelium were subjected to a comprehensive analysis of differential gene expression to identify significant genes involved in asthma development and progression. The identified genes were subjected to Gene Set Enrichment Analysis using a total of 31,826 gene sets related to chemical, toxins, and drugs to identify common agents that share similar asthma-related targets genes and signaling pathways. Results Our analysis identified 225 differentially expressed genes between severe asthmatic and healthy bronchial epithelium. Gene Set Enrichment Analysis of the identified genes showed that they are involved in response to toxic substances and organic cyclic compounds and are targeted by 41 specific diets, plants products, and plants related toxins (eg adenine, arachidonic acid, baicalein, caffeic acid, corilagin, curcumin, ellagic acid, luteolin, microcystin-RR, phytoestrogens, protoporphyrin IX, purpurogallin, rottlerin, and salazinic acid). Moreover, the identified chemicals share interesting inflammation-related pathways like NF-κB. Conclusion Our analysis was able to explain and predict the toxicity in terms of stimulating the differentially expressed genes between severe asthmatic and healthy epithelium. Such an approach can pave the way to generate a cost-effective and reliable source for asthma-specific toxigenic reports thus allowing the asthmatic patients, physicians, and medical researchers to be aware of the potential triggering factors with fatal consequences.
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Affiliation(s)
- Mahmood Yaseen Hachim
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Ibrahim Yaseen Hachim
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Noha M Elemam
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Rifat A Hamoudi
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates.,Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates.,Division of Surgery and Interventional Science, University College London, London, UK
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