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Elmahy RA, Moustafa AY, Radwan NA. Toxocara canis: Prospective activity of Quercetin and venom of Cassiopea andromeda (Cnidaria: Cassiopeidae) against third-stage larvae in vitro. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY 2024. [PMID: 38973302 DOI: 10.1002/jez.2852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 06/15/2024] [Accepted: 06/24/2024] [Indexed: 07/09/2024]
Abstract
Toxocariasis is a zoonotic parasitic infection with worldwide distribution and high impact on human health. It has a limited clinical resolution with the available drugs, making it challenging to treat. Quercetin, which possesses biological and pharmacological qualities including antiparasitic, antioxidant, and anticancer activities, is a possible substitute for the current medications. Marine invertebrates can produce a vast array of different molecules, many of which are biologically active substances with distinct characteristics. In this study, we assessed the in vitro nematocidal effect of both quercetin and venom of Cassiopea andromeda (jellyfish) against third larvae of Toxocara canis. In microplates with Roswell Park Memorial Institute-1640 medium, larvae were incubated with ethanolic extract of quercetin (0.01, 0.02, 0.05, 0.08, 0.1, 0.25, and 0.5 mM/mL) and water extract of C. andromeda venom (15, 20, 25, 30, 35, 40, and 60 µg/mL) to evaluate their larvicidal effect. A scanning electron microscopy has investigated the possible effect of lethal concentration (LC90) of both extracts on the body wall of cultivated larvae, in comparison with those cultivated in albendazole. Our study revealed the effects of both quercetin and C. andromeda venom exposure on the mortality rate and the ultrastructure of T. canis third larva in comparison with control and albendazole-treated groups.
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Affiliation(s)
- Rasha A Elmahy
- Department of Zoology, Faculty of Science, Tanta University, Tanta, Egypt
| | - Alaa Y Moustafa
- Department of Zoology, Faculty of Science, Sohag University, Sohag, Egypt
| | - Nahla A Radwan
- Department of Zoology, Faculty of Science, Tanta University, Tanta, Egypt
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2
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Kim T, Lee C, Kwon I, Lee J, Park SY, Kim DU, Lee J, Jin G, Yousefzadeh M, Bae H, Yoo Y, Kim JJ, Noh J, Hong S, Kwon BO, Chang WK, Chang GS, Khim JS. Integrated assessment of the natural purification capacity of tidal flat for persistent toxic substances and heavy metals in contaminated sediments. ENVIRONMENT INTERNATIONAL 2024; 185:108534. [PMID: 38458115 DOI: 10.1016/j.envint.2024.108534] [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: 10/04/2023] [Revised: 02/15/2024] [Accepted: 02/23/2024] [Indexed: 03/10/2024]
Abstract
Natural purification of pollutants is highly recognized as regulating ecosystem services; however, the purification capacity of tidal flats remains largely unknown and/or unquantified. A 60-day mesocosm transplant experiment was conducted in situ to assess the purification capacity of natural tidal flats. We adopted the advanced sediment quality triad approach, monitoring 10 endpoints, including chemical reduction, toxicity changes, and community recoveries. The results indicated that contaminated sediments rapidly recovered over time, particularly > 50% within a day, then slowly recovered up to ∼ 70% in a given period (60 days). A significant early reduction of parent pollutants was evidenced across all treatments, primarily due to active bacterial decomposition. Notably, the presence of benthic fauna and vegetated halophytes in the treatments significantly enhanced the purification of pollutants in both efficacy and efficiency. A forecast linear modeling further suggested additive effects of biota on the natural purification of tidal flats, reducing a full recovery time from 500 to 300 days. Overall, the triad approach with machine learning practices successfully demonstrated quantitative insight into the integrated assessment of natural purification.
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Affiliation(s)
- Taewoo Kim
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
| | - Changkeun Lee
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
| | - Inha Kwon
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
| | - Junghyun Lee
- Department of Environmental Education, Kongju National University, Gongju 32588, Republic of Korea.
| | - Shin Yeong Park
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
| | - Dong-U Kim
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
| | - Jongmin Lee
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
| | - Gayoung Jin
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
| | - Mehdi Yousefzadeh
- School of Computer Science, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran.
| | - Hanna Bae
- GeoSystem Research Corporation, Gunpo 15807, Republic of Korea.
| | - Yeonjae Yoo
- Division of Environmental Science & Ecological Engineering, College of Life Science & Biotechnology, Korea University, Seoul 02841, Republic of Korea.
| | - Jae-Jin Kim
- Division of Environmental Science & Ecological Engineering, College of Life Science & Biotechnology, Korea University, Seoul 02841, Republic of Korea.
| | - Junsung Noh
- Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea.
| | - Seongjin Hong
- Department of Marine Environmental Sciences, Chungnam National University, Daejeon 34134, Republic of Korea.
| | - Bong-Oh Kwon
- Department of Marine Biotechnology, Kunsan National University, Kunsan 54150, Republic of Korea.
| | - Won Keun Chang
- Korea Maritime Institute, Busan 49111, Republic of Korea.
| | - Gap Soo Chang
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, SK S7N5E2, Canada.
| | - Jong Seong Khim
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
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Mok C, Xiao MA, Wan YC, Zhao W, Ahmed SM, Luallen RJ, Reinke AW. High-throughput phenotyping of infection by diverse microsporidia species reveals a wild C. elegans strain with opposing resistance and susceptibility traits. PLoS Pathog 2023; 19:e1011225. [PMID: 36893187 PMCID: PMC10030041 DOI: 10.1371/journal.ppat.1011225] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 03/21/2023] [Accepted: 02/20/2023] [Indexed: 03/10/2023] Open
Abstract
Animals are under constant selective pressure from a myriad of diverse pathogens. Microsporidia are ubiquitous animal parasites, but the influence they exert on shaping animal genomes is mostly unknown. Using multiplexed competition assays, we measured the impact of four different species of microsporidia on 22 wild isolates of Caenorhabditis elegans. This resulted in the identification and confirmation of 13 strains with significantly altered population fitness profiles under infection conditions. One of these identified strains, JU1400, is sensitive to an epidermal-infecting species by lacking tolerance to infection. JU1400 is also resistant to an intestinal-infecting species and can specifically recognize and destroy this pathogen. Genetic mapping of JU1400 demonstrates that these two opposing phenotypes are caused by separate loci. Transcriptional analysis reveals the JU1400 sensitivity to epidermal microsporidia infection results in a response pattern that shares similarity to toxin-induced responses. In contrast, we do not observe JU1400 intestinal resistance being regulated at the transcriptional level. The transcriptional response to these four microsporidia species is conserved, with C. elegans strain-specific differences in potential immune genes. Together, our results show that phenotypic differences to microsporidia infection amongst C. elegans are common and that animals can evolve species-specific genetic interactions.
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Affiliation(s)
- Calvin Mok
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Meng A. Xiao
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Yin C. Wan
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Winnie Zhao
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Shanzeh M. Ahmed
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Robert J. Luallen
- Department of Biology, San Diego State University, San Diego, California, United States of America
| | - Aaron W. Reinke
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
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Servello FA, Fernandes R, Eder M, Harris N, Martin OMF, Oswal N, Lindberg A, Derosiers N, Sengupta P, Stroustrup N, Apfeld J. Neuronal temperature perception induces specific defenses that enable C. elegans to cope with the enhanced reactivity of hydrogen peroxide at high temperature. eLife 2022; 11:e78941. [PMID: 36226814 PMCID: PMC9635881 DOI: 10.7554/elife.78941] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 10/12/2022] [Indexed: 11/30/2022] Open
Abstract
Hydrogen peroxide is the most common reactive chemical that organisms face on the microbial battlefield. The rate with which hydrogen peroxide damages biomolecules required for life increases with temperature, yet little is known about how organisms cope with this temperature-dependent threat. Here, we show that Caenorhabditis elegans nematodes use temperature information perceived by sensory neurons to cope with the temperature-dependent threat of hydrogen peroxide produced by the pathogenic bacterium Enterococcus faecium. These nematodes preemptively induce the expression of specific hydrogen peroxide defenses in response to perception of high temperature by a pair of sensory neurons. These neurons communicate temperature information to target tissues expressing those defenses via an insulin/IGF1 hormone. This is the first example of a multicellular organism inducing their defenses to a chemical when they sense an inherent enhancer of the reactivity of that chemical.
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Affiliation(s)
| | - Rute Fernandes
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and TechnologyBarcelonaSpain
- Universitat Pompeu Fabra (UPF)BarcelonaSpain
| | - Matthias Eder
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and TechnologyBarcelonaSpain
- Universitat Pompeu Fabra (UPF)BarcelonaSpain
| | - Nathan Harris
- Department of Biology, Brandeis UniversityWalthamUnited States
| | - Olivier MF Martin
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and TechnologyBarcelonaSpain
- Universitat Pompeu Fabra (UPF)BarcelonaSpain
| | - Natasha Oswal
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and TechnologyBarcelonaSpain
- Universitat Pompeu Fabra (UPF)BarcelonaSpain
| | - Anders Lindberg
- Biology Department, Northeastern UniversityBostonUnited States
| | | | - Piali Sengupta
- Department of Biology, Brandeis UniversityWalthamUnited States
| | - Nicholas Stroustrup
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and TechnologyBarcelonaSpain
- Universitat Pompeu Fabra (UPF)BarcelonaSpain
| | - Javier Apfeld
- Biology Department, Northeastern UniversityBostonUnited States
- Bioengineering Department, Northeastern UniversityBostonUnited States
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Rivenbark KJ, Wang M, Lilly K, Tamamis P, Phillips TD. Development and characterization of chlorophyll-amended montmorillonite clays for the adsorption and detoxification of benzene. WATER RESEARCH 2022; 221:118788. [PMID: 35777320 PMCID: PMC9662585 DOI: 10.1016/j.watres.2022.118788] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
After disasters, such as forest fires and oil spills, high levels of benzene (> 1 ppm) can be detected in the water, soil, and air surrounding the disaster site, which poses a significant health risk to human, animal, and plant populations in the area. While remediation methods with activated carbons have been employed, these strategies are limited in their effectiveness due to benzene's inherent stability and limited retention to most surfaces. To address this problem, calcium and sodium montmorillonite clays were amended with a mixture of chlorophyll (a) and (b); their binding profile and ability to detoxify benzene were characterized using in vitro, in silico, and well-established ecotoxicological (ecotox) bioassay methods. The results of in vitro isothermal analyses indicated that chlorophyll-amended clays showed an improved binding profile in terms of an increased binding affinity (Kf = 668 vs 67), increased binding percentage (52% vs 11%), and decreased rates of desorption (28% vs 100%), compared to the parent clay. In silico simulation studies elucidated the adsorption mechanism and validated that the addition of the chlorophyll to the clays increased the adsorption of benzene through Van der Waals forces (i.e., aromatic π-π stacking and alkyl-π interactions). The sorbents were also assessed for their safety and ability to protect sensitive ecotox organisms (Lemna minor and Caenorhabditis elegans) from the toxicity of benzene. The inclusion of chlorophyll-amended clays in the culture medium significantly reduced benzene toxicity to both organisms, protecting C. elegans by 98-100% from benzene-induced mortality and enhancing the growth rates of L. minor. Isothermal analyses, in silico modeling, and independent bioassays all validated our proof of concept that benzene can be sequestered, tightly bound, and stabilized by chlorophyll-amended montmorillonite clays. These novel sorbents can be utilized during disasters and emergencies to decrease unintentional exposures from contaminated water, soil, and air.
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Affiliation(s)
- Kelly J Rivenbark
- Interdisciplinary Faculty of Toxicology, Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Meichen Wang
- Interdisciplinary Faculty of Toxicology, Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Kendall Lilly
- Department of Materials Science and Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Phanourios Tamamis
- Department of Materials Science and Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA; Artie McFerrin Department of Chemical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Timothy D Phillips
- Interdisciplinary Faculty of Toxicology, Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA.
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Ji CW, Park YS, Cui Y, Wang H, Kwak IS, Chon TS. Analyzing the Response Behavior of Lumbriculus variegatus (Oligochaeta: Lumbriculidae) to Different Concentrations of Copper Sulfate Based on Line Body Shape Detection and a Recurrent Self-Organizing Map. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17082627. [PMID: 32290455 PMCID: PMC7215344 DOI: 10.3390/ijerph17082627] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 04/07/2020] [Indexed: 11/29/2022]
Abstract
Point detection (e.g., the centroid of the body) of species has been conducted in numerous studies. However, line detection (i.e., the line body shape) of elongated species has rarely been investigated under stressful conditions. We analyzed the line movements of an Oligochaeta Lumbriculus variegatus in response to treatments with a toxic chemical, copper sulfate, at low concentrations (0.01 mg/L and 0.1 mg/L). The automatic line-tracking system was devised to identify the movement of body segments (body length) and the movements of segments (i.e., the speed and angles between segments) were recorded before and after treatment. Total body length was shortened from 31.22 (±5.18) mm to 20.91 (±4.65) mm after the 0.1 mg/L treatment. The Shannon entropy index decreased from 0.44 (±0.1) to 0.28 (±0.08) after treatment. On the other hand, the body and movement segments did not significantly change after the 0.01 mg/L treatment. Sequential movements of test organisms were further analyzed with a recurrent self-organizing map (RSOM) to determine the pattern of time-series line movements. The RSOM made it feasible to classify sequential behaviors of indicator organisms and identify various continuous body movements under stressful conditions.
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Affiliation(s)
- Chang Woo Ji
- Fisheries Science Institute, Chonnam National University, Yeosu 59626, Korea; (C.W.J.); (I.-S.K.)
| | - Young-Seuk Park
- Department of Biology and Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul 02447, Korea
- Correspondence: (Y.-S.P.); (T.-S.C.); Tel.: +82-2-961-0946 (Y.-S.P.); +82-51-512-2262 (T.-S.C.)
| | - Yongde Cui
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (Y.C.); (H.W.)
| | - Hongzhu Wang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (Y.C.); (H.W.)
| | - Ihn-Sil Kwak
- Fisheries Science Institute, Chonnam National University, Yeosu 59626, Korea; (C.W.J.); (I.-S.K.)
| | - Tae-Soo Chon
- Ecology and Future Research Association (EnFRA), Dusil-ro 45 beon-gil 21, Geumjeong-gu, Busan 46228, Korea
- Correspondence: (Y.-S.P.); (T.-S.C.); Tel.: +82-2-961-0946 (Y.-S.P.); +82-51-512-2262 (T.-S.C.)
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Abbas A, Valek L, Schneider I, Bollmann A, Knopp G, Seitz W, Schulte-Oehlmann U, Oehlmann J, Wagner M. Ecotoxicological impacts of surface water and wastewater from conventional and advanced treatment technologies on brood size, larval length, and cytochrome P450 (35A3) expression in Caenorhabditis elegans. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:13868-13880. [PMID: 29512011 DOI: 10.1007/s11356-018-1605-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 02/22/2018] [Indexed: 06/08/2023]
Abstract
Anthropogenic micropollutants and transformation products (TPs) negatively affect aquatic ecosystems and water resources. Wastewater treatment plants (WWTP) represent major point sources for (micro)pollutants and TPs in urban water cycles. The aim of the current study was to assess the removal of micropollutants and toxicity during conventional and advanced wastewater treatment. Using wild-type and transgenic Caenorhabditis elegans, the endpoint reproduction, growth, and cytochrome P450 (CYP) 35A3 induction (via cyp-35A3::GFP) were assessed. Samples were collected at four WWTPs and a receiving surface water. One WWTP included the advanced treatments: ozonation followed by granular activated carbon (GAC) or biological filtration (BF), respectively. Relevant micropollutants and WWTP parameters (n = 111) were included. Significant reproductive toxicity was detected for one WWTP effluent (31-83% reduced brood size). Three of four effluents significantly promoted the growth of C. elegans larvae (49-55% increased lengths). This effect was also observed for the GAC (34-41%) and BF (30%) post-treatments. Markedly, significant cyp-35A3::GFP induction was detected for one effluent before and after ozonation, being more pronounced for the ozonated samples (5- and 7.4-fold above controls). While the advanced treatments decreased the concentrations of most micropollutants, the observed effects may be attributed to effects of residual target compounds and/or compounds not included in the target chemical analysis. This highlights the need for an integrated assessment of (advanced) wastewater treatment covering both biological and chemical parameters.
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Affiliation(s)
- Aennes Abbas
- Institute of Ecology, Diversity and Evolution, Goethe Universität Frankfurt, Max-von-Laue-Str. 13, 60438, Frankfurt, Germany.
| | - Lucie Valek
- Department of Clinical Pharmacology, Goethe-University Hospital, Theodor Stern Kai 7, 60590, Frankfurt, Germany
| | - Ilona Schneider
- Institute of Ecology, Diversity and Evolution, Goethe Universität Frankfurt, Max-von-Laue-Str. 13, 60438, Frankfurt, Germany
| | - Anna Bollmann
- Zweckverband Landeswasserversorgung, Spitziger Berg 1, 89129, Langenau, Germany
| | - Gregor Knopp
- Department of Wastewater Technology and Water Reuse, Technische Universität Darmstadt, Franziska-Braun-Str. 7, 64287, Darmstadt, Germany
| | - Wolfram Seitz
- Zweckverband Landeswasserversorgung, Spitziger Berg 1, 89129, Langenau, Germany
| | - Ulrike Schulte-Oehlmann
- Institute of Ecology, Diversity and Evolution, Goethe Universität Frankfurt, Max-von-Laue-Str. 13, 60438, Frankfurt, Germany
| | - Jörg Oehlmann
- Institute of Ecology, Diversity and Evolution, Goethe Universität Frankfurt, Max-von-Laue-Str. 13, 60438, Frankfurt, Germany
| | - Martin Wagner
- Institute of Ecology, Diversity and Evolution, Goethe Universität Frankfurt, Max-von-Laue-Str. 13, 60438, Frankfurt, Germany
- Department of Biology, Norwegian University of Science and Technology, Høgskoleringen 5, Realfagbygget, Trondheim, Norway
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Implementation of Fractal Dimension and Self-Organizing Map to Detect Toxic Effects of Toluene on Movement Tracks of Daphnia magna. J Toxicol 2018; 2018:2637209. [PMID: 29681934 PMCID: PMC5846358 DOI: 10.1155/2018/2637209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 01/17/2018] [Accepted: 01/24/2018] [Indexed: 11/18/2022] Open
Abstract
Movement behaviors of an indicator species, Daphnia magna, in response to contaminants have been implemented to monitor environmental disturbances. Complexity in movement tracks of Daphnia magna was characterized by use of fractal dimension and self-organizing map. The individual movement tracks of D. magna were continuously recorded for 24 hours before and after treatments with toluene at the concentration of 10 mg/L, respectively. The general complexity in movement tracks (10 minutes) was characterized by fractal dimension. Results showed that average fractal dimension of movement tracks was decreased from 1.62 to 1.22 after treatments. The instantaneous movement parameters of movement segments in 5 s were input into the self-organizing map to investigate the swimming pattern changes under stresses of toluene. Abnormal behaviors of D. magna are more frequently observed after treatments than before treatments. Computational methods in ecological informatics could be utilized to obtain the useful information in behavioral data of D. magna and would be further applied as an in situ monitoring tool in water environment.
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Zhao Y, Zhi L, Wu Q, Yu Y, Sun Q, Wang D. p38 MAPK-SKN-1/Nrf signaling cascade is required for intestinal barrier against graphene oxide toxicity in Caenorhabditis elegans. Nanotoxicology 2016; 10:1469-1479. [PMID: 27615004 DOI: 10.1080/17435390.2016.1235738] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Biological barrier plays a crucial role for organisms against the possible toxicity from engineered nanomaterials (ENMs). Graphene oxide (GO) has been proven to cause potential toxicity on organisms. However, the molecular mechanisms for intestinal barrier of animals against GO toxicity are largely unclear. Using in vivo assay system of Caenorhabditis elegans, we found that mutation of genes encoding core p38 mitogen-activated protein kinase (MAPK) signaling pathway caused susceptible property to GO toxicity and enhanced translocation of GO into the body of nematodes. Genetic assays indicated that SKN-1/Nrf functioned downstream of p38 MAPK signaling pathway to regulate GO toxicity and translocation. Transcription factor of SKN-1 could regulate GO toxicity and translocation at least through function of its targeted gene of gst-4 encoding one of phase II detoxification proteins. Moreover, intestine-specific RNA interference (RNAi) assay demonstrated that the p38 MAPK-SKN-1/Nrf signaling cascade could function in intestine to regulate GO toxicity and intestinal permeability in GO exposed nematodes. Therefore, p38 MAPK-SKN-1/Nrf signaling cascade may act as an important molecular basis for intestinal barrier against GO toxicity in organisms. Exposure to GO induced significantly increased expression of genes encoding p38 MAPK-SKN-1/Nrf signaling cascade, which further implies that the identified p38 MAPK-SKN-1/Nrf signaling cascade may encode a protection mechanism for nematodes in intestine to be against GO toxicity.
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Affiliation(s)
- Yunli Zhao
- a Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University , Nanjing , China , and.,b Department of Preventive Medicine , Bengbu Medical College , Bengbu , China
| | - Lingtong Zhi
- a Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University , Nanjing , China , and
| | - Qiuli Wu
- a Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University , Nanjing , China , and
| | - Yonglin Yu
- a Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University , Nanjing , China , and
| | - Qiqing Sun
- a Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University , Nanjing , China , and
| | - Dayong Wang
- a Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University , Nanjing , China , and
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Khaled I, Ferjani H, Ben Ahmed R, Harrath AH. Effects of oil-related environmental pollutants on gonads of the freshwater leech Limnatis nilotica (Annelida, Hirudinea). INVERTEBR REPROD DEV 2016. [DOI: 10.1080/07924259.2016.1208118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Brinke A, Buchinger S. Toxicogenomics in Environmental Science. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2016; 157:159-186. [DOI: 10.1007/10_2016_15] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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