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Wu F, Kong H, Xie L, Sokolova IM. Exposure to nanopollutants (nZnO) enhances the negative effects of hypoxia and delays recovery of the mussels' immune system. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 351:124112. [PMID: 38705446 DOI: 10.1016/j.envpol.2024.124112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/03/2024] [Accepted: 05/03/2024] [Indexed: 05/07/2024]
Abstract
Aquatic environments face escalating challenges from multiple stressors like hypoxia and nanoparticle exposure, with impact of these combined stressors on mussel immunity being poorly understood. We investigated the individual and combined effects of short-term and long-term hypoxia and exposure to zinc oxide nanoparticles (nZnO) on immune system of the mussels (Mytilus edulis). Hemocyte functional traits (mortality, adhesion capacity, phagocytosis, lysosomal abundance, and oxidative burst), and transcript levels of immune-related genes involved in pathogen recognition (the Toll-like receptors, the complement system components, and the adaptor proteins MyD88) were assessed. Short-term hypoxia minimally affected hemocyte parameters, while prolonged exposure led to immunosuppression, impacting hemocyte abundance, viability, phagocytosis, and defensin gene expression. Under normoxia, nZnO stimulated immune responses of mussel hemocytes. However, combined nZnO and hypoxia induced more pronounced and rapid immunosuppression than hypoxia alone, indicating a synergistic interaction. nZnO exposure hindered immune parameter recovery during post-hypoxic reoxygenation, suggesting persistent impact. Opposing trends were observed in pathogen-sensing and pathogen-elimination mechanisms, with a positive correlation between pathogen-recognition system activation and hemocyte mortality. These findings underscore a complex relationship and potential conflict between pathogen-recognition ability, immune function, and cell survival in mussel hemocytes under hypoxia and nanopollutant stress, and emphasize the importance of considering multiple stressors in assessing the vulnerability and adaptability of mussel immune system under complex environmental conditions of anthropogenically modified coastal ecosystems.
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Affiliation(s)
- Fangli Wu
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; Department of Marine Biology, Institute for Biological Sciences, University of Rostock, Rostock, Germany; School of Environment, South China Normal University, University Town, Guangzhou, 510006, China
| | - Hui Kong
- Department of Marine Biology, Institute for Biological Sciences, University of Rostock, Rostock, Germany
| | - Lingtian Xie
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; School of Environment, South China Normal University, University Town, Guangzhou, 510006, China
| | - Inna M Sokolova
- Department of Marine Biology, Institute for Biological Sciences, University of Rostock, Rostock, Germany; Department of Maritime Systems, Interdisciplinary Faculty, University of Rostock, Rostock, Germany.
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Nigro L, Freitas R, Maggioni D, Hamza H, Coppola F, Protano G, Della Torre C. Coating with polysaccharides influences the surface charge of cerium oxide nanoparticles and their effects to Mytilus galloprovincialis. NANOIMPACT 2021; 24:100362. [PMID: 35559821 DOI: 10.1016/j.impact.2021.100362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/28/2021] [Accepted: 10/25/2021] [Indexed: 06/15/2023]
Abstract
This study focused on the effects of surface coating, acquired through the interaction with natural biomolecules, on the behavior and ecotoxicity of nanoparticles (NPs). To this aim, the effects of Cerium Oxide Nanoparticles (CeO2NPs) naked and coated with chitosan and alginate on the marine mussel Mytilus galloprovincialis were compared. Mussels were exposed for 7 days to 100 μg L-1 of CeO2NPs and for 28 days to 1 μg L-1 of CeO2NPs. In both experiments CeO2NPs were used naked and coated with the two polysaccharides. The lowest tested concentration allowed to understand the environmental relevance of this biological process. A set of biomarkers related to oxidative stress/damage and energy metabolism was applied to assess the ecotoxicity of CeO2NPs. The aggregation and stability in water of CeO2NPs were measured through dynamic light scattering analysis and the levels of Ce in the exposure media and in mussels soft tissues were determined by inductively coupled plasma-mass spectrometry. Results showed a different hydrodynamic behavior and stability of CeO2NPs in saltwater related to the different coatings. Despite this, no differences in the bioaccumulation of CeO2NPs were observed among the experimental groups. Different coatings affected also CeO2NPs toxicological outcomes in both 7- and 28-days exposures. Coating with chitosan enhanced antioxidant enzyme activities while coating with alginate triggered oxidative damage. Although the oxidant pathways did not differ that much among the exposures, biomarkers of energetic supplies suggested a different strategy of defense in response to CeO2NP exposure at a lower concentration and for a longer period of time. The obtained results are in line with findings of a previous study on freshwater mussels, suggesting that the coating with biomolecules, which impart negative charge to the NPs, might enhance their biological effects. This study highlighted that interactions of NPs with natural biomolecules largely present in the aquatic environment could affect NPs toxicity altering the interaction towards organisms.
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Affiliation(s)
- Lara Nigro
- Department of Biosciences, University of Study of Milan, Italy; Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Rosa Freitas
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | | | - Hady Hamza
- Department of Chemistry, University of Study of Milan, Italy
| | - Francesca Coppola
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Giuseppe Protano
- Department of Physical, Earth and Environmental Sciences, University of Study of Siena, Italy
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Ben Younes R, Bouallegui Y, Fezai O, Mezni A, Touaylia S, Oueslati R. Silver nanoparticles' impact on the gene expression of the cytosolic adaptor MyD-88 and the interferon regulatory factor IRF in the gills and digestive gland of mytilus galloprovincialis. Drug Chem Toxicol 2021; 45:2371-2378. [PMID: 34225533 DOI: 10.1080/01480545.2021.1945128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Silver nanoparticles (AgNPs) have been reported as stressors for the bivalves' immune system at different regulatory levels, impacting the detection step and receptors, and other mediators, as well as effector molecules. However, studies on how AgNPs impact the transmission of signals from receptors and whether they have an effect on mediators and transcription factors are still scarce. This study aims to investigate the effect of 12 hours of in vivo exposure to 100 µg/L of AgNPs on the gene expression of the cytosolic adaptor Myeloid, the differentiation protein 88 (MgMyD88-b), and the interferon regulatory factor (Me4-IRF) in the gills and digestive gland of Mytilus galloprovincialis, before and after blocking two major uptake pathways of nanoparticles (clathrin- and caveolae-mediated endocytosis). The results illustrate a tissue-specific gene expression of the MgMyD88-b and the Me4-IRF in the gills and digestive gland of M. galloprovincialis. In the gills, AgNPs did not significantly impact the expression of the two genes. However, blocking the caveolae-mediated endocytosis decreased the expression of Me4-IRF. However, inhibition of clathrin-mediated endocytosis in the digestive gland recorded a significant decrease in the expression of MgMyD88-b. Overall, the inhibition of the AgNPs' uptake routes have highlighted their potential interference with the immune response through the studied mediators' genes, which need to be studied further in future investigations.
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Affiliation(s)
- Ridha Ben Younes
- Research Unit of Immuno-Microbiology, Environment and Carcinogenesis, Faculty of Sciences of Bizerte, University of Carthage, Tunisia
| | - Younes Bouallegui
- Research Unit of Immuno-Microbiology, Environment and Carcinogenesis, Faculty of Sciences of Bizerte, University of Carthage, Tunisia.,LR01ES14 Laboratory of Environmental Biomonitoring, University of Carthage, Faculty of Sciences of Bizerte, Bizerte, Tunisia
| | - Olfa Fezai
- LR01ES14 Laboratory of Environmental Biomonitoring, University of Carthage, Faculty of Sciences of Bizerte, Bizerte, Tunisia
| | - Amine Mezni
- Department of Chemistry, College of Science, Taif University, Taif, Saudi Arabia
| | - Samir Touaylia
- LR01ES14 Laboratory of Environmental Biomonitoring, University of Carthage, Faculty of Sciences of Bizerte, Bizerte, Tunisia
| | - Ridha Oueslati
- Research Unit of Immuno-Microbiology, Environment and Carcinogenesis, Faculty of Sciences of Bizerte, University of Carthage, Tunisia
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Swartzwelter BJ, Mayall C, Alijagic A, Barbero F, Ferrari E, Hernadi S, Michelini S, Navarro Pacheco NI, Prinelli A, Swart E, Auguste M. Cross-Species Comparisons of Nanoparticle Interactions with Innate Immune Systems: A Methodological Review. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1528. [PMID: 34207693 PMCID: PMC8230276 DOI: 10.3390/nano11061528] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 06/04/2021] [Accepted: 06/07/2021] [Indexed: 12/18/2022]
Abstract
Many components of the innate immune system are evolutionarily conserved and shared across many living organisms, from plants and invertebrates to humans. Therefore, these shared features can allow the comparative study of potentially dangerous substances, such as engineered nanoparticles (NPs). However, differences of methodology and procedure between diverse species and models make comparison of innate immune responses to NPs between organisms difficult in many cases. To this aim, this review provides an overview of suitable methods and assays that can be used to measure NP immune interactions across species in a multidisciplinary approach. The first part of this review describes the main innate immune defense characteristics of the selected models that can be associated to NPs exposure. In the second part, the different modes of exposure to NPs across models (considering isolated cells or whole organisms) and the main endpoints measured are discussed. In this synergistic perspective, we provide an overview of the current state of important cross-disciplinary immunological models to study NP-immune interactions and identify future research needs. As such, this paper could be used as a methodological reference point for future nano-immunosafety studies.
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Affiliation(s)
| | - Craig Mayall
- Department of Biology, Biotechnical Faculty, University of Liubljana, 1000 Ljubljana, Slovenia;
| | - Andi Alijagic
- Institute for Biomedical Research and Innovation, National Research Council, 90146 Palermo, Italy;
| | - Francesco Barbero
- Institut Català de Nanosciència i Nanotecnologia (ICN2), Bellaterra, 08193 Barcelona, Spain;
| | - Eleonora Ferrari
- Center for Plant Molecular Biology–ZMBP Eberhard-Karls University Tübingen, 72076 Tübingen, Germany;
| | - Szabolcs Hernadi
- School of Biosciences, Cardiff University, Cardiff CF10 3AX, UK;
| | - Sara Michelini
- Department of Biosciences, Paris-Lodron University Salzburg, 5020 Salzburg, Austria;
| | | | | | - Elmer Swart
- UK Centre for Ecology and Hydrology, Wallingford OX10 8BB, UK;
| | - Manon Auguste
- Department of Earth Environment and Life Sciences, University of Genova, 16126 Genova, Italy
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Acute and chronic effects of Titanium dioxide (TiO 2) PM 1 on honey bee gut microbiota under laboratory conditions. Sci Rep 2021; 11:5946. [PMID: 33723271 PMCID: PMC7960711 DOI: 10.1038/s41598-021-85153-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 02/22/2021] [Indexed: 02/06/2023] Open
Abstract
Apis mellifera is an important provider of ecosystem services, and during flight and foraging behaviour is exposed to environmental pollutants including airborne particulate matter (PM). While exposure to insecticides, antibiotics, and herbicides may compromise bee health through alterations of the gut microbial community, no data are available on the impacts of PM on the bee microbiota. Here we tested the effects of ultrapure Titanium dioxide (TiO2) submicrometric PM (i.e., PM1, less than 1 µm in diameter) on the gut microbiota of adult bees. TiO2 PM1 is widely used as a filler and whitening agent in a range of manufactured objects, and ultrapure TiO2 PM1 is also a common food additive, even if it has been classified by the International Agency for Research on Cancer (IARC) as a possible human carcinogen in Group 2B. Due to its ubiquitous use, honey bees may be severely exposed to TiO2 ingestion through contaminated honey and pollen. Here, we demonstrated that acute and chronic oral administration of ultrapure TiO2 PM1 to adult bees alters the bee microbial community; therefore, airborne PM may represent a further risk factor for the honey bee health, promoting sublethal effects against the gut microbiota.
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A Comparative Assessment of the Chronic Effects of Micro- and Nano-Plastics on the Physiology of the Mediterranean Mussel Mytilus galloprovincialis. NANOMATERIALS 2021; 11:nano11030649. [PMID: 33800064 PMCID: PMC8001054 DOI: 10.3390/nano11030649] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 02/27/2021] [Accepted: 03/02/2021] [Indexed: 12/25/2022]
Abstract
The ocean contamination caused by micro- and nano-sized plastics is a matter of increasing concern regarding their potential effects on marine organisms. This study compared the effects of a 21-day exposure to 1.5, 15, and 150 ng/L of polystyrene microplastics (PS-MP, 3-µm) and nanoplastics (PS-NP, 50-nm) on a suite of biomarkers measured in the Mediterranean mussel Mytilus galloprovincialis. Endpoints encompassed immunological/lysosomal responses, oxidative stress/detoxification parameters, and neurotoxicological markers. Compared to PS-MP, PS-NP induced higher effects on lysosomal parameters of general stress. Exposures to both particle sizes increased lipid peroxidation and catalase activity in gills; PS-NP elicited greater effects on the phase-II metabolism enzyme glutathione S-transferase and on lysozyme activity, while only PS-MP inhibited the hemocyte phagocytosis, suggesting a major role of PS particle size in modulating immunological/detoxification pathways. A decreased acetylcholinesterase activity was induced by PS-NP, indicating their potential to impair neurological functions in mussels. Biomarker data integration in the Mussel Expert System identified an overall greater health status alteration in mussels exposed to PS-NP compared to PS-MP. This study shows that increasing concentrations of nanoplastics may induce higher effects than microplastics on the mussel’s lysosomal, metabolic, and neurological functions, eventually resulting in a greater impact on their overall fitness.
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Swart E, Dvorak J, Hernádi S, Goodall T, Kille P, Spurgeon D, Svendsen C, Prochazkova P. The Effects of In Vivo Exposure to Copper Oxide Nanoparticles on the Gut Microbiome, Host Immunity, and Susceptibility to a Bacterial Infection in Earthworms. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1337. [PMID: 32659907 PMCID: PMC7408611 DOI: 10.3390/nano10071337] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/03/2020] [Accepted: 07/06/2020] [Indexed: 02/06/2023]
Abstract
Nanomaterials (NMs) can interact with the innate immunity of organisms. It remains, however, unclear whether these interactions can compromise the immune functioning of the host when faced with a disease threat. Co-exposure with pathogens is thus a powerful approach to assess the immuno-safety of NMs. In this paper, we studied the impacts of in vivo exposure to a biocidal NM on the gut microbiome, host immune responses, and susceptibility of the host to a bacterial challenge in an earthworm. Eisenia fetida were exposed to CuO-nanoparticles in soil for 28 days, after which the earthworms were challenged with the soil bacterium Bacillus subtilis. Immune responses were monitored by measuring mRNA levels of known earthworm immune genes. Effects of treatments on the gut microbiome were also assessed to link microbiome changes to immune responses. Treatments caused a shift in the earthworm gut microbiome. Despite these effects, no impacts of treatment on the expression of earthworm immune markers were recorded. The methodological approach applied in this paper provides a useful framework for improved assessment of immuno-safety of NMs. In addition, we highlight the need to investigate time as a factor in earthworm immune responses to NM exposure.
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Affiliation(s)
- Elmer Swart
- UK Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Wallingford OX10 8BB, UK; (T.G.); (D.S.)
| | - Jiri Dvorak
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Czech Republic; (J.D.); (P.P.)
| | - Szabolcs Hernádi
- School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK; (S.H.); (P.K.)
| | - Tim Goodall
- UK Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Wallingford OX10 8BB, UK; (T.G.); (D.S.)
| | - Peter Kille
- School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK; (S.H.); (P.K.)
| | - David Spurgeon
- UK Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Wallingford OX10 8BB, UK; (T.G.); (D.S.)
| | - Claus Svendsen
- UK Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Wallingford OX10 8BB, UK; (T.G.); (D.S.)
| | - Petra Prochazkova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Czech Republic; (J.D.); (P.P.)
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Auguste M, Lasa A, Balbi T, Pallavicini A, Vezzulli L, Canesi L. Impact of nanoplastics on hemolymph immune parameters and microbiota composition in Mytilus galloprovincialis. MARINE ENVIRONMENTAL RESEARCH 2020; 159:105017. [PMID: 32662444 DOI: 10.1016/j.marenvres.2020.105017] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 05/07/2020] [Accepted: 05/10/2020] [Indexed: 06/11/2023]
Abstract
Ocean contamination by micro- and nanoplastics represents a potential threat to marine biota, from bacterial communities to higher organisms. In this work, the effect of in vivo exposure of Mytilus galloprovincialis to amino modified nanopolystyrene (PS-NH2) (10 μg/L, 96 h) on hemolymph immune parameters and microbiota composition were investigated. Nanoplastics significantly affected immune parameters (decreased phagocytosis, increased ROS and lysozyme activity, inhibition of NO production). These changes were associated with a shift in hemolymph microbiota composition, with increase in some genera (Arcobacter-like, Psychrobium, Vibrio), and decreases in others (Shewanella, Mycoplasma). The results indicate that exposure to nanoplastics can impact on the microbiome of marine bivalves, and suggest that downregulation of immune defences induced by PS-NH2 may favour potentially pathogenic bacteria. These data underline how exposure to nanoplastics may represent a potential threat to the complex interplay between innate immunity and host microbiota, thus affecting the homeostatic processes involved in maintenance of organism health.
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Affiliation(s)
- Manon Auguste
- DISTAV, Dept. of Environmental, Earth and Life Sciences, University of Genoa, Italy.
| | - Aide Lasa
- DISTAV, Dept. of Environmental, Earth and Life Sciences, University of Genoa, Italy; Department of Microbiology and Parasitology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Teresa Balbi
- DISTAV, Dept. of Environmental, Earth and Life Sciences, University of Genoa, Italy
| | | | - Luigi Vezzulli
- DISTAV, Dept. of Environmental, Earth and Life Sciences, University of Genoa, Italy
| | - Laura Canesi
- DISTAV, Dept. of Environmental, Earth and Life Sciences, University of Genoa, Italy
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Boraschi D, Alijagic A, Auguste M, Barbero F, Ferrari E, Hernadi S, Mayall C, Michelini S, Navarro Pacheco NI, Prinelli A, Swart E, Swartzwelter BJ, Bastús NG, Canesi L, Drobne D, Duschl A, Ewart MA, Horejs-Hoeck J, Italiani P, Kemmerling B, Kille P, Prochazkova P, Puntes VF, Spurgeon DJ, Svendsen C, Wilde CJ, Pinsino A. Addressing Nanomaterial Immunosafety by Evaluating Innate Immunity across Living Species. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2000598. [PMID: 32363795 DOI: 10.1002/smll.202000598] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/12/2020] [Accepted: 03/13/2020] [Indexed: 06/11/2023]
Abstract
The interaction of a living organism with external foreign agents is a central issue for its survival and adaptation to the environment. Nanosafety should be considered within this perspective, and it should be examined that how different organisms interact with engineered nanomaterials (NM) by either mounting a defensive response or by physiologically adapting to them. Herein, the interaction of NM with one of the major biological systems deputed to recognition of and response to foreign challenges, i.e., the immune system, is specifically addressed. The main focus is innate immunity, the only type of immunity in plants, invertebrates, and lower vertebrates, and that coexists with adaptive immunity in higher vertebrates. Because of their presence in the majority of eukaryotic living organisms, innate immune responses can be viewed in a comparative context. In the majority of cases, the interaction of NM with living organisms results in innate immune reactions that eliminate the possible danger with mechanisms that do not lead to damage. While in some cases such interaction may lead to pathological consequences, in some other cases beneficial effects can be identified.
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Affiliation(s)
- Diana Boraschi
- Institute of Biochemistry and Cell Biology, National Research Council, Napoli, 80131, Italy
| | - Andi Alijagic
- Institute for Biomedical Research and Innovation, National Research Council, Palermo, 90146, Italy
| | - Manon Auguste
- Department of Earth, Environment and Life Sciences, University of Genova, Genova, 16126, Italy
| | - Francesco Barbero
- Institut Català de Nanosciència i Nanotecnologia (ICN2), Bellaterra, Barcelona, 08193, Spain
| | - Eleonora Ferrari
- Center for Plant Molecular Biology - ZMBP, Eberhard-Karls University Tübingen, Tübingen, 72076, Germany
| | - Szabolcs Hernadi
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | - Craig Mayall
- Department of Biology, Biotechnical Faculty, University of Liubljana, Ljubljana, 1000, Slovenia
| | - Sara Michelini
- Department of Biosciences, Paris-Lodron University Salzburg, Salzburg, 5020, Austria
| | | | | | - Elmer Swart
- UK Centre for Ecology and Hydrology, Wallingford, OX10 8BB, UK
| | | | - Neus G Bastús
- Institut Català de Nanosciència i Nanotecnologia (ICN2), Bellaterra, Barcelona, 08193, Spain
| | - Laura Canesi
- Department of Earth, Environment and Life Sciences, University of Genova, Genova, 16126, Italy
| | - Damjana Drobne
- Department of Biology, Biotechnical Faculty, University of Liubljana, Ljubljana, 1000, Slovenia
| | - Albert Duschl
- Department of Biosciences, Paris-Lodron University Salzburg, Salzburg, 5020, Austria
| | | | - Jutta Horejs-Hoeck
- Department of Biosciences, Paris-Lodron University Salzburg, Salzburg, 5020, Austria
| | - Paola Italiani
- Institute of Biochemistry and Cell Biology, National Research Council, Napoli, 80131, Italy
| | - Birgit Kemmerling
- Center for Plant Molecular Biology - ZMBP, Eberhard-Karls University Tübingen, Tübingen, 72076, Germany
| | - Peter Kille
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | - Petra Prochazkova
- Institute of Microbiology of the Czech Academy of Sciences, Prague, 142 20, Czech Republic
| | - Victor F Puntes
- Institut Català de Nanosciència i Nanotecnologia (ICN2), Bellaterra, Barcelona, 08193, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, 08010, Spain
- Vall d Hebron, Institut de Recerca (VHIR), Barcelona, 08035, Spain
| | | | - Claus Svendsen
- UK Centre for Ecology and Hydrology, Wallingford, OX10 8BB, UK
| | | | - Annalisa Pinsino
- Institute for Biomedical Research and Innovation, National Research Council, Palermo, 90146, Italy
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Wu F, Falfushynska H, Dellwig O, Piontkivska H, Sokolova IM. Interactive effects of salinity variation and exposure to ZnO nanoparticles on the innate immune system of a sentinel marine bivalve, Mytilus edulis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 712:136473. [PMID: 31931204 DOI: 10.1016/j.scitotenv.2019.136473] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 12/26/2019] [Accepted: 12/31/2019] [Indexed: 06/10/2023]
Abstract
ZnO nanoparticles (nZnO) are released into the coastal environment from multiple sources, yet their toxicity to marine organisms is not well understood. We investigated the interactive effects of salinity (normal 15, low 5, and fluctuating 5-15) and nZnO (100 μg l-1) on innate immunity of the blue mussels Mytilus edulis from a brackish area of the Baltic Sea. Exposure to ionic Zn (100 μg l-1) was used to test whether the toxic effects of nZnO can be attributed to the potential release of Zn2+. Functional parameters and the expression of key immune-related genes were investigated in the mussels exposed to nZnO or ionic Zn under different salinity regimes for 21 days. nZnO exposures elevated hemocyte mortality, suppressed adhesion, stimulated phagocytosis, and led to an apparent increase in lysosomal volume. At salinity 15, nZnO suppressed the mRNA expression of the Toll-like receptors TLRb and c, C-lectin, and the complement system component C3q indicating impaired ability for pathogen recognition. In contrast, the mRNA levels of an antimicrobial peptide defensin increased during nZnO exposure at salinity 15. At fluctuating salinity (5-15), nZnO exposure increased expression of multiple immune-related genes in hemocytes including the complement system components C1 and C3q, and the Toll-like receptors TLRa, b and c. Low salinity (5) had strong immunosuppressive effects on the functional and molecular immune traits of M. edulis that overshadowed the effects of nZnO. The salinity-dependent modulation of immune response to nZnO cannot be attributed to the differences in the aggregation or solubility of nZnO, and likely reflects the interaction of the toxic effects of nanoparticles and physiological effects of the osmotic stress. These findings have implications for the environmental risk assessment of nanomaterials and the development of the context-specific biomarker baselines for coastal pollution monitoring.
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Affiliation(s)
- Fangli Wu
- Department of Marine Biology, Institute for Biological Sciences, University of Rostock, Rostock, Germany
| | - Halina Falfushynska
- Department of Marine Biology, Institute for Biological Sciences, University of Rostock, Rostock, Germany; Department of Human Health, Physical Rehabilitation and Vital Activity, Ternopil V. Hnatiuk National Pedagogical University, Ternopil, Ukraine
| | - Olaf Dellwig
- Department of Marine Geology, Leibniz Institute for Baltic Sea Research Warnemünde, Rostock, Germany
| | - Helen Piontkivska
- Department of Biological Sciences, Kent State University, Kent, OH, USA
| | - Inna M Sokolova
- Department of Marine Biology, Institute for Biological Sciences, University of Rostock, Rostock, Germany; Department of Maritime Systems, Interdisciplinary Faculty, University of Rostock, Rostock, Germany.
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