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Auguste M, Leonessi M, Bozzo M, Risso B, Cutroneo L, Prandi S, Kokalj AJ, Drobne D, Canesi L. Multiple responses of Mytilus galloprovincialis to plastic microfibers. Sci Total Environ 2023; 890:164318. [PMID: 37230338 DOI: 10.1016/j.scitotenv.2023.164318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/16/2023] [Accepted: 05/17/2023] [Indexed: 05/27/2023]
Abstract
Plastic microfibers (MF) represent the major source of MF found in the environment, the majority made of polyester (PES). Marine bivalves, suspension feeders widespread in coastal areas subjected to higher anthropogenic input, can accumulate MF from the water column in their tissues. This raised some concern about their possible impact on bivalve health and potential transfer along the food chain. In this work, the effects of PES-MF on the mussel Mytilus galloprovincialis were investigated, utilizing MF obtained by cryo-milling of a fleece cover. Fiber characterization indicated the polymer composition as polyethylene terephthalate (PET); the size distribution was in a length range resembling that of MF released from textile washing, and including those that can be ingested by mussels. MF were first screened for short-term in vitro immune responses in mussel hemocytes. The effects of in vivo exposure (96 h, 10 and 100 μg/L, corresponding to about 150 and 1500 MF/mussel/L, respectively), were then evaluated. Data are presented on hemolymph immune biomarkers (Reactive Oxygen Species and nitric oxide production, lysozyme activity), and on antioxidant biomarkers (catalase and glutathione S-transferase) and histopathology in gills and digestive gland. Tissue MF accumulation was also evaluated. MF exposure stimulated extracellular immune responses both in vitro and in vivo, indicating induction of immune/inflammatory processes. In both tissues, stimulation of antioxidant enzyme activities, suggesting oxidative stress conditions, and histopathological changes were observed, with stronger effects often observed at lower concentration. Although mussel retained a very small fraction of MF, their accumulation was higher in the digestive gland than in gills, and in both tissues of mussels exposed to the lowest concentration. Selective accumulation of shorter MF was also observed, particularly in gills. Overall, the results demonstrate that at environmental exposure levels, PET-MF have a significant impact on mussel physiology, affecting multiple processes in different tissues.
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Affiliation(s)
- M Auguste
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genova, Genoa, Italy.
| | - M Leonessi
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genova, Genoa, Italy; NBFC, National Biodiversity Future Center, Palermo 90133, Italy
| | - M Bozzo
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genova, Genoa, Italy
| | - B Risso
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genova, Genoa, Italy
| | - L Cutroneo
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genova, Genoa, Italy
| | - S Prandi
- Dept. Regional Laboratory, Sector Organic Chemistry and Physical Analysis, ARPAL, 16149 Genoa, Italy
| | - A Jemec Kokalj
- Dept. of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - D Drobne
- Dept. of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - L Canesi
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genova, Genoa, Italy; NBFC, National Biodiversity Future Center, Palermo 90133, Italy
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Miglioli A, Balbi T, Montagna M, Dumollard R, Canesi L. Tetrabromobisphenol A acts a neurodevelopmental disruptor in early larval stages of Mytilus galloprovincialis. Sci Total Environ 2021; 793:148596. [PMID: 34328967 DOI: 10.1016/j.scitotenv.2021.148596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/08/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Tetrabromobisphenol A-TBBPA, a widely used brominated flame retardant detected in aquatic environments, is considered a potential endocrine disruptor-ED for its reproductive/developmental effects in vertebrates. In aquatic invertebrates, the modes of action of most EDs are largely unknown, due to partial knowledge of the mechanisms controlling neuroendocrine functions. In the marine bivalve Mytilus galloprovincialis, TBBPA has been previously shown to affect larval development in the 48 h larval toxicity assay at environmental concentrations. In this work, the effects of TBBPA were further investigated at different times post-fertilization. TBBPA, from 1 μg/L, affected shell biogenesis at 48 hours post fertilization-hpf, as shown by phenotypic and SEM analysis. The mechanisms of action of TBBPA were investigated at concentrations of the same order of magnitude as those found in highly polluted coastal areas (10 μg/L). At 28-32 hpf, TBBPA significantly affected deposition of both the organic matrix and CaCO3 in the shell. TBBPA also altered expression of shell-related genes from 24 to 48 hpf, in particular of tyrosinase, a key enzyme in shell matrix remodeling. At earlier stages (24 hpf), TBBPA affected the development of dopaminergic, serotoninergic and GABAergic systems, as shown by in situ hybridization-ISH and immunocytochemistry. These data contribute draw adverse outcome pathways-AOPs, where TBBPA affects the synthesis of neutrotransmitters involved in key events (neurodevelopment and shell biogenesis), resulting in phenotypic changes on individuals (delayed or arrested development) that might lead to detrimental consequences on populations.
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Affiliation(s)
- A Miglioli
- Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, DISTAV, Università di Genova, Corso Europa 26, 16132 Genova, Italy; Sorbonne Université/CNRS, Institut de la Mer, UMR7009 Laboratoire de Biologie du Développement, 06230, Chemin du Lazaret, 06230 Villefranche-sur-Mer, France
| | - T Balbi
- Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, DISTAV, Università di Genova, Corso Europa 26, 16132 Genova, Italy.
| | - M Montagna
- Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, DISTAV, Università di Genova, Corso Europa 26, 16132 Genova, Italy
| | - R Dumollard
- Sorbonne Université/CNRS, Institut de la Mer, UMR7009 Laboratoire de Biologie du Développement, 06230, Chemin du Lazaret, 06230 Villefranche-sur-Mer, France
| | - L Canesi
- Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, DISTAV, Università di Genova, Corso Europa 26, 16132 Genova, Italy
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Miglioli A, Balbi T, Besnardeau L, Dumollard R, Canesi L. Bisphenol A interferes with first shell formation and development of the serotoninergic system in early larval stages of Mytilus galloprovincialis. Sci Total Environ 2021; 758:144003. [PMID: 33321361 DOI: 10.1016/j.scitotenv.2020.144003] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 11/15/2020] [Accepted: 11/15/2020] [Indexed: 06/12/2023]
Abstract
Bisphenol A-BPA, a widespread plastic additive, is an emerging contaminant of high concern and a potential endocrine disruptor in mammals. BPA also represents a potential threat for aquatic species, especially for larval stages. In the marine bivalve Mytilus galloprovincialis, BPA has been previously shown to affect early larval development and gene transcription. In this work, the effects of BPA (0.05-0.5-5 μM) were further investigated at different times post fertilization (24-28-32-48 hpf). BPA induced concentration-dependent alterations in deposition of the organic matrix and calcified shell at different larval stages, as shown by double calcofluor/calcein staining, resulting in altered phenotypes at 48hpf. Transcription of Tyrosinase-TYR, that plays a key role in remodelling of the shell organic matrix, and of HOX1, a member of homeobox genes involved in larval shell formation and neurogenesis, were evaluated by In Situ Hybrydization-ISH. BPA altered the spatial pattern of expression of both genes, with distinct effects depending on the concentration and developmental stage. Moreover, BPA affected the time course of mRNA levels for TYR from 24 to 48hpf. BPA impaired development of serotonin-5-HT-immunoreactive neurons at different times pf; at 48hpf, the reduction in the number of serotoninergic neurons was associated with developmental delay and downregulation of the 5-HT receptor-5-HTR. All the effects were observed from the lowest concentration tested, corresponding to detectable BPA levels in contaminated coastal waters. These data demonstrate that BPA interferes with key processes occurring during the first developmental stages of mussels, thus representing a potential threat for natural populations.
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Affiliation(s)
- A Miglioli
- Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, DISTAV, Università di Genova, Corso Europa 26, 16132 Genova, Italy; Laboratoire de Biologie du Developpement de Villefranche-sur-mer, Institut de la mer, Sorbonne Université, CNRS, 181 Chemin du Lazaret, 06230 Villefranche-sur-mer, France
| | - T Balbi
- Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, DISTAV, Università di Genova, Corso Europa 26, 16132 Genova, Italy
| | - L Besnardeau
- Laboratoire de Biologie du Developpement de Villefranche-sur-mer, Institut de la mer, Sorbonne Université, CNRS, 181 Chemin du Lazaret, 06230 Villefranche-sur-mer, France
| | - R Dumollard
- Laboratoire de Biologie du Developpement de Villefranche-sur-mer, Institut de la mer, Sorbonne Université, CNRS, 181 Chemin du Lazaret, 06230 Villefranche-sur-mer, France
| | - L Canesi
- Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, DISTAV, Università di Genova, Corso Europa 26, 16132 Genova, Italy.
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Balbi T, Vezzulli L, Lasa A, Pallavicini A, Canesi L. Insight into the microbial communities associated with first larval stages of Mytilus galloprovincialis: Possible interference by estrogenic compounds. Comp Biochem Physiol C Toxicol Pharmacol 2020; 237:108833. [PMID: 32585367 DOI: 10.1016/j.cbpc.2020.108833] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 05/29/2020] [Accepted: 06/19/2020] [Indexed: 12/12/2022]
Abstract
The microbiota, the host-associated community of microbes, play important roles in health status and whole body homeostasis of all organisms, including marine species. In bivalves, the microbiota composition has been mainly investigated in adults, whereas little information is available during development. In this work, the microbiota composition of the first larval stages of Mytilus galloprovincialis was evaluated by 16S rRNA gene-based profiling, at 24 and 48 hours post fertilization in comparison with those of eggs and sperm. The main genera detected in both larvae (Vibrio, Pseudoalteromonas, Psychrobium, Colwellia) derived from eggs. However, a clear shift in microbiota was observed in developing larvae compared to eggs, both in terms of core microbiome and relative abundance of different genera. The results provide a first insight into the composition of the microbial communities associated with gametes and early larvae of mussels. Moreover, the impact on larval microbiome of estrogenic chemicals that potentially affect Mytilus early development, 17βestradiol-E2, Bisphenol A-BPA and Bisphenol F-BPF (10 μg/L), was investigated. Exposure to estrogenic chemicals leads to changes in abundance of different genera, with distinct and common effects depending on the compound and larval stage. Both potential pathogens (Vibrio, Arcobacter, Tenacibaculum) and genera involved in xenobiotic biotransformation (Oleispira, Shewanella) were affected. The effects of estrogenic compounds on larval microbiome were not related to their developmental effects: however, the results address the importance of evaluating the impact of emerging contaminants on the microbiota of marine invertebrates, including larval stages, that are most sensitive to environmental perturbations.
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Affiliation(s)
- T Balbi
- DISTAV, Dept. of Earth, Environment and Life Sciences, University of Genoa, Italy.
| | - L Vezzulli
- DISTAV, Dept. of Earth, Environment and Life Sciences, University of Genoa, Italy
| | - A Lasa
- Dept. of Microbiology and Parasitology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - A Pallavicini
- Dept. of Life Sciences, University of Trieste, Italy
| | - L Canesi
- DISTAV, Dept. of Earth, Environment and Life Sciences, University of Genoa, Italy
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Miglioli A, Dumollard R, Balbi T, Besnardeau L, Canesi L. Characterization of the main steps in first shell formation in Mytilus galloprovincialis: possible role of tyrosinase. Proc Biol Sci 2019; 286:20192043. [PMID: 31771478 DOI: 10.1098/rspb.2019.2043] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Bivalve biomineralization is a highly complex and organized process, involving several molecular components identified in adults and larval stages. However, information is still scarce on the ontogeny of the organic matrix before calcification occurs. In this work, first shell formation was investigated in the mussel Mytilus galloprovincialis. The time course of organic matrix and CaCO3 deposition were followed at close times post fertilization (24, 26, 29, 32, 48 h) by calcofluor and calcein staining, respectively. Both components showed an exponential trend in growth, with a delay between organic matrix and CaCO3 deposition. mRNA levels of genes involved in matrix deposition (chitin synthase; tyrosinase- TYR) and calcification (carbonic anhydrase; extrapallial protein) were quantified by qPCR at 24 and 48 hours post fertilization (hpf) with respect to eggs. All transcripts were upregulated across early development, with TYR showing highest mRNA levels from 24 hpf. TYR transcripts were closely associated with matrix deposition as shown by in situ hybridization. The involvement of tyrosinase activity was supported by data obtained with the enzyme inhibitor N-phenylthiourea. Our results underline the pivotal role of shell matrix in driving first CaCO3 deposition and the importance of tyrosinase in the formation of the first shell in M. galloprovincialis.
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Affiliation(s)
- A Miglioli
- Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, DISTAV, Università di Genova, Corso Europa 26, 16132 Genova, Italy.,Laboratoire de Biologie du Developpement de Villefranche-sur-mer, Institut de la mer, Sorbonne Université, CNRS, 181 Chemin du Lazaret, 06230 Villefranche-sur-mer, France
| | - R Dumollard
- Laboratoire de Biologie du Developpement de Villefranche-sur-mer, Institut de la mer, Sorbonne Université, CNRS, 181 Chemin du Lazaret, 06230 Villefranche-sur-mer, France
| | - T Balbi
- Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, DISTAV, Università di Genova, Corso Europa 26, 16132 Genova, Italy
| | - L Besnardeau
- Laboratoire de Biologie du Developpement de Villefranche-sur-mer, Institut de la mer, Sorbonne Université, CNRS, 181 Chemin du Lazaret, 06230 Villefranche-sur-mer, France
| | - L Canesi
- Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, DISTAV, Università di Genova, Corso Europa 26, 16132 Genova, Italy
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Cavalcante Silva J, Grasseli E, Canesi L, Palombo D, Abdalla D. P310A new dual-PPAR agonist (GQ-11), prevents ischemia-reperfusion damage in rats after supraceliac aorta clamping. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez148.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J Cavalcante Silva
- University of São Paulo, Faculty of Pharmaceutical Sciences, SÃO PAULO, Brazil
| | | | - L Canesi
- University of Genoa, Genova, Italy
| | | | - D Abdalla
- University of São Paulo, Faculty of Pharmaceutical Sciences, SÃO PAULO, Brazil
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Auguste M, Balbi T, Montagna M, Fabbri R, Sendra M, Blasco J, Canesi L. In vivo immunomodulatory and antioxidant properties of nanoceria (nCeO 2) in the marine mussel Mytilus galloprovincialis. Comp Biochem Physiol C Toxicol Pharmacol 2019; 219:95-102. [PMID: 30797983 DOI: 10.1016/j.cbpc.2019.02.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/09/2019] [Accepted: 02/15/2019] [Indexed: 12/11/2022]
Abstract
Cerium nanoparticles (nCeO2) are increasingly utilized in a wide variety of industrial, environmental and biomedical applications, and are therefore expected to be released in the aquatic environment. Due to its peculiar redox properties, nCeO2 may present unique hazards to environmental and human health. Previous data showed that in the hemocytes of the marine bivalve Mytilus galloprovincialis, in vitro exposure to a particular type of nCeO2 (9 nm, characterized by negative ζ-potential, high H2O2 scavenging capacity and Ce3+/Ce4+ surface ratio) reduced basal ROS production, lysosomal membrane stability and phagocytic activity in the presence of hemolymph serum; the effects observed were partly ascribed to the formation of a SOD-protein corona in the hemolymph. In this work, the in vivo effects of this type of nCeO2 were investigated in mussels exposed to 100 μg/L nCeO2 for 96 h; several lysosomal, immune, inflammatory and antioxidant biomarkers were measured at cellular (hemocytes) and tissue (gills, digestive gland) level. Molecular responses were evaluated in hemocytes and digestive gland by determining expression of 11 selected genes related to known biological functions. The results show specific immunomodulatory and antioxidant effects of nCeO2 at different levels of biological organization in the absence of Cerium tissue accumulation. These data further support the redox mechanisms at the basis of the physiological effects of nCeO2. Finally, in order to evaluate the possible impact at the whole organism level, the effects of nCeO2 were evaluated in the 48 h embryotoxicity assay in a wide concentration range. However, nCeO2 exposure resulted in a small reduction in normal embryo development. Overall, the results demonstrate that in mussels nCeO2 can selectively modulate different physiological processes at different levels of biological organization.
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Affiliation(s)
- M Auguste
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genoa, Genoa, Italy.
| | - T Balbi
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
| | - M Montagna
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
| | - R Fabbri
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
| | | | | | - L Canesi
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
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Auguste M, Ciacci C, Balbi T, Brunelli A, Caratto V, Marcomini A, Cuppini R, Canesi L. Effects of nanosilver on Mytilus galloprovincialis hemocytes and early embryo development. Aquat Toxicol 2018; 203:107-116. [PMID: 30107316 DOI: 10.1016/j.aquatox.2018.08.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 07/25/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
Silver nanoparticles (AgNP), one of the main nanomaterials for production and use, are expected to reach the aquatic environment, representing a potential threat to aquatic organisms. In this study, the effects of bare AgNPs (47 nm) on the marine mussel Mytilus galloprovincialis were evaluated at the cellular and whole organism level utilizing both immune cells (hemocytes) and developing embryos. The effects were compared with those of ionic Ag+(AgNO3). In vitro short-term exposure (30 min) of hemocytes to AgNPs induced small lysosomal membrane destabilization (LMS EC50 = 273.1 μg/mL) and did not affect other immune parameters (phagocytosis and ROS production). Responses were little affected by hemolymph serum (HS) as exposure medium in comparison to ASW. However, AgNPs significantly affected mitochondrial membrane potential and actin cytoskeleton at lower concentrations. AgNO3 showed much higher toxicity, with an EC50 = 1.23 μg/mL for LMS, decreased phagocytosis and induced mitochondrial and cytoskeletal damage at similar concentrations. Both AgNPs and AgNO3 significantly affected Mytilus embryo development, with EC50 = 23.7 and 1 μg/L, respectively. AgNPs caused malformations and developmental delay, but no mortality, whereas AgNO3 mainly induced shell malformations followed by developmental arrest or death. Overall, the results indicate little toxicity of AgNPs compared with AgNO3; moreover, the mechanisms of action of AgNP appeared to be distinct from those of Ag+. The results indicate little contribution of released Ag+ in our experimental conditions. These data provide a further insight into potential impact of AgNPs in marine invertebrates.
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Affiliation(s)
- M Auguste
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
| | - C Ciacci
- Dept. of Biomolecular Sciences (DIBS), University of Urbino, Italy
| | - T Balbi
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
| | - A Brunelli
- Dept. of Geosciences, University of Vienna, Austria
| | - V Caratto
- Dept. of Chemistry and Industrial Chemistry (DICCI), University of Genoa, Genoa, Italy
| | - A Marcomini
- Dept. of Environmental Sciences, Informatics and Statistics (DAIS), Ca' Foscari University, Venice, Italy
| | - R Cuppini
- Dept. of Biomolecular Sciences (DIBS), University of Urbino, Italy
| | - L Canesi
- Dept. of Earth, Environment and Life Sciences (DISTAV), University of Genoa, Genoa, Italy.
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Sendra M, Volland M, Balbi T, Fabbri R, Yeste MP, Gatica JM, Canesi L, Blasco J. Cytotoxicity of CeO 2 nanoparticles using in vitro assay with Mytilus galloprovincialis hemocytes: Relevance of zeta potential, shape and biocorona formation. Aquat Toxicol 2018; 200:13-20. [PMID: 29704629 DOI: 10.1016/j.aquatox.2018.04.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 05/26/2023]
Abstract
Over the last decades, the growth in nanotechnology has provoked an increase in the number of its applications and consumer products that incorporate nanomaterials in their formulation. Metal nanoparticles are released to the marine environment and they can interact with cells by colloids forces establish a nano-bio interface. This interface can be compatible or generate bioadverse effects to cells. The daily use of CeO2 nanoparticles (CeO2 NPs) in industrial catalysis, sunscreen, fuel cells, fuel additives and biomedicine and their potential release into aquatic environments has turned them into a new emerging pollutant of concern. It is necessary to assess of effects of CeO2 NPs in aquatic organisms and understand the potential mechanisms of action of CeO2 NP toxicity to improve our knowledge about the intrinsic and extrinsic characteristic of CeO2 NPs and the interaction of CeO2 NPs with biomolecules in different environment and biological fluids. The conserved innate immune system of bivalves represents a useful tool for studying immunoregulatory responses when cells are exposed to NPs. In this context, the effects of two different CeO2 NPs with different physico-chemical characteristics (size, shape, zeta potential and Ce+3/Ce+4 ratio) and different behavior with biomolecules in plasma fluid were studied in a series of in vitro assays using primary hemocytes from Mytilus galloprovincialis. Different cellular responses such as lysosome membrane stability, phagocytosis capacity and extracellular reactive oxygen species (ROS) production were evaluated. Our results indicate that the agglomeration state of CeO2 NPs in the exposure media did not appear to have a substantial role in particle effects, while differences in shape, zeta potential and biocorona formation in NPs appear to be important in provoking negative impacts on hemocytes. The negative charge and the rounded shape of CeO2 NPs, which formed Cu, Zn-SOD biocorona in hemolymph serum (HS), triggered higher changes in the biomarker of stress (LMS) and immunological parameters (ROS and phagocytosis capacity). On the other hand, the almost neutral surface charge and well-faceted shape of CeO2 NPs did not show either biocorona formation in HS under tested conditions or significant responses. According to the results, the most relevant conclusion of this work is that not only the physicochemical characterization of CeO2 NPs plays an important role in NPs toxicity but also the study of the interaction of NPs with biological fluids is essential to know it behavior and toxicity at cellular level.
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Affiliation(s)
- M Sendra
- Department of Ecology and Coastal Management, Institute of Marine Sciences of Andalusia (CSIC), Campus Río S. Pedro, 11510, Puerto Real, Cádiz, Spain.
| | - M Volland
- Department of Ecology and Coastal Management, Institute of Marine Sciences of Andalusia (CSIC), Campus Río S. Pedro, 11510, Puerto Real, Cádiz, Spain
| | - T Balbi
- Department of Earth, Environment and Life Sciences, University of Genova, Corso Europa 26, 16132, Genova, Italy
| | - R Fabbri
- Department of Earth, Environment and Life Sciences, University of Genova, Corso Europa 26, 16132, Genova, Italy
| | - M P Yeste
- Department of Material Science, Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, University of Cadiz, E-11510, Puerto Real, Cádiz, Spain
| | - J M Gatica
- Department of Material Science, Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, University of Cadiz, E-11510, Puerto Real, Cádiz, Spain
| | - L Canesi
- Department of Earth, Environment and Life Sciences, University of Genova, Corso Europa 26, 16132, Genova, Italy
| | - J Blasco
- Department of Ecology and Coastal Management, Institute of Marine Sciences of Andalusia (CSIC), Campus Río S. Pedro, 11510, Puerto Real, Cádiz, Spain
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Marques-Santos LF, Grassi G, Bergami E, Faleri C, Balbi T, Salis A, Damonte G, Canesi L, Corsi I. Cationic polystyrene nanoparticle and the sea urchin immune system: biocorona formation, cell toxicity, and multixenobiotic resistance phenotype. Nanotoxicology 2018; 12:847-867. [DOI: 10.1080/17435390.2018.1482378] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- L. F. Marques-Santos
- Department of Molecular Biology, Federal University of Paraiba, João Pessoa, Brazil
| | - G. Grassi
- Department of Physical, Earth and Environmental Sciences-DSFTA, University of Siena, Siena, Italy
| | - E. Bergami
- Department of Physical, Earth and Environmental Sciences-DSFTA, University of Siena, Siena, Italy
| | - C. Faleri
- Department of Earth, Environmental and Life Sciences-DISTAV, University of Genoa, Genoa, Italy
| | - T. Balbi
- Department of Life Sciences-DSV, University of Siena, Siena, Italy
| | - A. Salis
- Centre of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
| | - G. Damonte
- Centre of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
| | - L. Canesi
- Department of Life Sciences-DSV, University of Siena, Siena, Italy
| | - I. Corsi
- Department of Physical, Earth and Environmental Sciences-DSFTA, University of Siena, Siena, Italy
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Vezzulli L, Stagnaro L, Grande C, Tassistro G, Canesi L, Pruzzo C. Comparative 16SrDNA Gene-Based Microbiota Profiles of the Pacific Oyster (Crassostrea gigas) and the Mediterranean Mussel (Mytilus galloprovincialis) from a Shellfish Farm (Ligurian Sea, Italy). Microb Ecol 2018; 75:495-504. [PMID: 28803409 DOI: 10.1007/s00248-017-1051-6] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 07/27/2017] [Indexed: 06/07/2023]
Abstract
The pacific oyster Crassostrea gigas and the Mediterranean mussel Mytilus galloprovincialis are two widely farmed bivalve species which show contrasting behaviour in relation to microbial diseases, with C. gigas being more susceptible and M. galloprovincialis being generally resistant. In a recent study, we showed that different susceptibility to infection exhibited by these two bivalve species may depend on their different capability to kill invading pathogens (e.g., Vibrio spp.) through the action of haemolymph components. Specific microbial-host interactions may also impact bivalve microbiome structure and further influence susceptibility/resistance to microbial diseases. To further investigate this concept, a comparative study of haemolymph and digestive gland 16SrDNA gene-based bacterial microbiota profiles in C. gigas and M. galloprovincialis co-cultivated at the same aquaculture site was carried out using pyrosequencing. Bacterial communities associated with bivalve tissues (hemolymph and digestive gland) were significantly different from those of seawater, and were dominated by relatively few genera such as Vibrio and Pseudoalteromonas. In general, Vibrio accounted for a larger fraction of the microbiota in C. gigas (on average 1.7-fold in the haemolymph) compared to M. galloprovincialis, suggesting that C. gigas may provide better conditions for survival for these bacteria, including potential pathogenic species such as V. aestuarianus. Vibrios appeared to be important members of C. gigas and M. galloprovincialis microbiota and might play a contrasting role in health and disease of bivalve species. Accordingly, microbiome analyses performed on bivalve specimens subjected to commercial depuration highlighted the ineffectiveness of such practice in removing Vibrio species from bivalve tissues.
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Affiliation(s)
- Luigi Vezzulli
- Department of Earth, Environmental and Life Sciences (DISTAV), University of Genoa, Genoa, Italy.
| | - L Stagnaro
- Department of Earth, Environmental and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
| | - C Grande
- Department of Earth, Environmental and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
| | - G Tassistro
- Department of Earth, Environmental and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
| | - L Canesi
- Department of Earth, Environmental and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
| | - C Pruzzo
- Department of Earth, Environmental and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
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Ciacci C, Manti A, Canonico B, Campana R, Camisassi G, Baffone W, Canesi L. Responses of Mytilus galloprovincialis hemocytes to environmental strains of Vibrio parahaemolyticus, Vibrio alginolyticus, Vibrio vulnificus. Fish Shellfish Immunol 2017; 65:80-87. [PMID: 28390964 DOI: 10.1016/j.fsi.2017.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/28/2017] [Accepted: 04/04/2017] [Indexed: 06/07/2023]
Abstract
Marine bivalves are exposed to different types of bacteria in the surrounding waters, in particular of the Vibrio genus. In the hemocytes of the mussel Mytilus spp. immune responses to different vibrios have been largely characterized. However, little information is available on the hemocyte responses to human pathogenic vibrios commonly detected in coastal waters and bivalve tissues that are involved in seafood-borne diseases. In this work, functional parameters of the hemocytes from the Mediterranean mussel M. galloprovincialis were evaluated in response to in vitro challenge with different vibrios isolated from environmental samples of the Adriatic sea (Italy): V. parahaemolyticus Conero, V. alginolyticus 1513 and V. vulnificus 509. V. parahaemolyticus ATCC 43996 was used for comparison. At the 50:1 bacteria hemocyte ratio, only V. parahaemolyticus strains induced significant lysosomal membrane destabilisation. Stimulation of extracellular lysozyme release, total ROS, O2- and NO production were observed, although to different extents and with distinct time courses for different vibrios, V. vulnificus 509 in particular. Further comparisons between V. parahaemolyticus Conero and V. vulnificus 509 showed that only the latter induced dysregulation of the phosphorylation state of p38 MAP Kinase and apoptotic processes. The results indicate that mussel hemocytes can mount an efficient immune response towards V. parahaemolyticus and V. alginolyticus strains, whereas V. vulnificus 509 may affect the hemocyte function. This is the first report on immune responses of mussels to local environmental isolates of human pathogenic vibrios. These data reinforce the hypothesis that Mytilus hemocytes show specific responses to different vibrio species and strains.
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Affiliation(s)
- C Ciacci
- Department of Biomolecular Science (DISB), University of Urbino "Carlo Bo", Urbino, Italy
| | - A Manti
- Department of Biomolecular Science (DISB), University of Urbino "Carlo Bo", Urbino, Italy
| | - B Canonico
- Department of Biomolecular Science (DISB), University of Urbino "Carlo Bo", Urbino, Italy
| | - R Campana
- Department of Biomolecular Science (DISB), University of Urbino "Carlo Bo", Urbino, Italy
| | - G Camisassi
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genova, Italy
| | - W Baffone
- Department of Biomolecular Science (DISB), University of Urbino "Carlo Bo", Urbino, Italy
| | - L Canesi
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genova, Italy.
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Canesi L, Ciacci C, Bergami E, Monopoli MP, Dawson KA, Papa S, Canonico B, Corsi I. Evidence for immunomodulation and apoptotic processes induced by cationic polystyrene nanoparticles in the hemocytes of the marine bivalve Mytilus. Mar Environ Res 2015; 111:34-40. [PMID: 26115607 DOI: 10.1016/j.marenvres.2015.06.008] [Citation(s) in RCA: 221] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 04/30/2015] [Accepted: 06/15/2015] [Indexed: 05/23/2023]
Abstract
Polymeric nanoparticles can reach the marine environment from different sources as weathering of plastic debris and nanowaste. Nevertheless, few data are available on their fate and impact on marine biota. Polystyrene nanoparticles (PS NPs) can be considered as a model for studying the effects of nanoplastics in marine organisms: recent data on amino-modified PS NPs (PS-NH2) toxicity in sea urchin embryos underlined that marine invertebrates can be biological targets of nanoplastics. Cationic PS NPs have been shown to be toxic to mammalian cells, where they can induce apoptotic processes; however, no information is available on their effects and mechanisms of action in the cells of marine organisms. In this work, the effects of 50 nm PS-NH2 were investigated in the hemocytes of the marine bivalve Mytilus galloprovincialis. Hemocytes were exposed to different concentrations (1, 5, 50 μg/ml) of PS-NH2 suspension in ASW. Clear signs of cytoxicity were evident only at the highest concentrations (50 μg/ml). On the other hand, a dose dependent decrease in phagocytic activity and increase in lysozyme activity were observed. PS-NH2 NPs also stimulated increase in extracellular ROS (reactive oxygen species) and NO (nitric oxide) production, with maximal effects at lower concentrations. Moreover, at the highest concentration tested, PS-NH2 NPs induced apoptotic process, as evaluated by Flow cytometry (Annexin V binding and mitochondrial parameters). The results demonstrate that in marine invertebrates the immune function can represent a significant target for PS-NPs. Moreover, in Mytilus hemocytes, PS-NH2 NPs can act through mechanisms similar to those observed in mammalian cells. Further research is necessary on specific mechanisms of toxicity and cellular uptake of nanoplastics in order to assess their impact on marine biota.
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Affiliation(s)
- L Canesi
- Dept.of Earth, Environmental and Life Sciences-DISTAV, University of Genoa, Italy.
| | - C Ciacci
- Dept.of Earth, Life and Environmental Sciences-DISTEVA, University of Urbino, Italy
| | - E Bergami
- Dept. of Physical, Earth and Environmental Sciences, University of Siena, Italy
| | - M P Monopoli
- Centre for BioNanoInteractions, School of Chemistry and Chemical Biology, University College Dublin, Ireland
| | - K A Dawson
- Centre for BioNanoInteractions, School of Chemistry and Chemical Biology, University College Dublin, Ireland
| | - S Papa
- Department of Biomolecular Sciences-DISB, University of Urbino, Italy
| | - B Canonico
- Dept.of Earth, Life and Environmental Sciences-DISTEVA, University of Urbino, Italy
| | - I Corsi
- Dept. of Physical, Earth and Environmental Sciences, University of Siena, Italy
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Canesi L, Ciacci C, Balbi T. Interactive effects of nanoparticles with other contaminants in aquatic organisms: Friend or foe? Mar Environ Res 2015; 111:128-134. [PMID: 25842999 DOI: 10.1016/j.marenvres.2015.03.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 03/25/2015] [Accepted: 03/29/2015] [Indexed: 05/29/2023]
Abstract
The increasing production and use of nanoparticles (NPs) will lead to their release into the aquatic environment, posing a potential threat to the health of aquatic organisms. Both in the water phase and in the sediments NPs could mix and interact with other pollutants, such as organic xenobiotics and heavy metals, leading to possible changes in their bioavailability/bioconcentration/toxicity. However, whether these interactive effects may lead to increased harmful effects in marine organisms is largely unknown. In this work, available data mainly obtained on carbon based NPs and n-TiO2, as examples of widespread NPs, in aquatic organisms are reviewed. Moreover, data are summarized on the interactive effects of n-TiO2 with 2,3,7,8-TCDD and Cd(2+), chosen as examples of common and persistent organic and inorganic contaminants, respectively, in the model marine bivalve Mytilus. The results reveal complex and often unexpected interactive responses of NPs with other pollutants, depending on type of contaminant and the endpoint measured, as well as differences in bioaccumulation. The results are discussed in relation with data obtained in freshwater organisms. Overall, information available so far indicate that interactive effects of NPs with other contaminants do not necessarily lead to increased toxicity or harmful effects in aquatic organisms.
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Affiliation(s)
- L Canesi
- Dept. of Earth, Environmental and Life Sciences-DISTAV, University of Genoa, Italy.
| | - C Ciacci
- Dept. of Earth, Life and Environmental Sciences-DiSTeVA, University of Urbino, Italy
| | - T Balbi
- Dept. of Earth, Environmental and Life Sciences-DISTAV, University of Genoa, Italy
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Grasselli E, Cortese K, Fabbri R, Smerilli A, Vergani L, Voci A, Gallo G, Canesi L. Thyromimetic actions of tetrabromobisphenol A (TBBPA) in steatotic FaO rat hepatoma cells. Chemosphere 2014; 112:511-518. [PMID: 25048947 DOI: 10.1016/j.chemosphere.2014.03.114] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 03/20/2014] [Accepted: 03/28/2014] [Indexed: 06/03/2023]
Abstract
Tetrabromobisphenol A (2,2-bis(3,5-dibromo-4-hydroxyphenyl propane-TBBPA) is the most produced brominated flame retardant, detected in the environment and in biological samples. TBBPA shares structural similarities with thyroid hormones (THs), and it has been shown to interfere with different aspects of TH physiology, this raising concern on its possible effects as an endocrine disruptor in humans and wildlife. THs play a major role in lipid metabolism, with the liver representing one of their main target tissues. At the cellular level, THs act through interactions with TH receptors (TRs), as well as through TR-independent mechanisms. Rat hepatoma FaO cells (a liver cell line defective for functional TRs) overloaded with lipids have been utilized as a model to investigate the anti-steatotic effects of THs in the hepatocyte. In this work, the possible effects of TBBPA in steatotic FaO cells were investigated. Exposure to TBBPA for 24 h reduced triglyceride (TAG) content and the size of lipid droplets (LDs); similar effects were obtained with equimolar doses (10(-6) M) of T3 (3,3',5-L-triiodothyronine). TBBPA and T3 showed common effects on transcription of genes involved in lipid homeostasis. In particular, TBBPA mainly up-regulated mRNA levels for LD-associated oxidative tissue-enriched PAT protein (OXPAT), peroxisome proliferator-activated receptor (PPAR) isoform β/δ, and the mitochondrial uncoupling protein 2 (UCP2). The results demonstrate that TBBPA can decrease lipid accumulation in steatotic cells through stimulation of oxidative pathways. These data identify novel thyromimetic actions of TBBPA at the cellular level.
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Affiliation(s)
- E Grasselli
- DISTAV, Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Università di Genova, Corso Europa 26, 16132 Genova, Italy; INBB, Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy.
| | - K Cortese
- DIMES, Dipartimento di Medicina Sperimentale, Università di Genova, Italy
| | - R Fabbri
- DISTAV, Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Università di Genova, Corso Europa 26, 16132 Genova, Italy
| | - A Smerilli
- DISTAV, Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Università di Genova, Corso Europa 26, 16132 Genova, Italy
| | - L Vergani
- DISTAV, Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Università di Genova, Corso Europa 26, 16132 Genova, Italy; INBB, Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy
| | - A Voci
- DISTAV, Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Università di Genova, Corso Europa 26, 16132 Genova, Italy
| | - G Gallo
- DISTAV, Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Università di Genova, Corso Europa 26, 16132 Genova, Italy
| | - L Canesi
- DISTAV, Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Università di Genova, Corso Europa 26, 16132 Genova, Italy; INBB, Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy
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Loria P, Matarazzo G, Spera R, Ghisellini P, Rando C, Grasselli E, Fabbri R, Canesi L, Eggenhoffner R. New nanostructured odontoiatric resins: Surface roughness and endocrine disruptors release. Dent Mater 2014. [DOI: 10.1016/j.dental.2014.08.347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Balbi T, Fabbri R, Cortese K, Smerilli A, Ciacci C, Grande C, Vezzulli L, Pruzzo C, Canesi L. Interactions between Mytilus galloprovincialis hemocytes and the bivalve pathogens Vibrio aestuarianus 01/032 and Vibrio splendidus LGP32. Fish Shellfish Immunol 2013; 35:1906-1915. [PMID: 24080469 DOI: 10.1016/j.fsi.2013.09.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 09/16/2013] [Accepted: 09/19/2013] [Indexed: 06/02/2023]
Abstract
Marine bivalves can accumulate large numbers of bacteria, in particular Vibrio species, whose persistence in bivalve tissues largely depends on their sensitivity to the bactericidal activity of circulating hemocytes and hemolymph soluble factors. The interactions between vibrios and hemolymph have been investigated, in particular in bivalve species susceptible to infection by certain Vibrio spp. and strains. In this work, the effects of two bivalve pathogens, Vibrio splendidus LGP32 (V.s.) and Vibrio aestuarianus 01/032 (V.a.), isolated from oyster mortality outbreaks, on the hemocytes of Mytilus galloprovincialis were investigated. In vitro, V.s., but not V.a., induced a dramatic decrease in lysosomal membrane stability-LMS in the hemocytes; both vibrios induced a moderate lysozyme release, with V.s. > V.a.. The V.s.-induced decrease in LMS was mediated by activation of PI-3Kinase, as shown by use of different kinase inhibitors. TEM analysis showed rapid internalization of both vibrios; however, V.s. lead to cellular and lysosomal damage and was able to survive within the hemocytes, whereas significant killing of V.a. was observed. In vivo, in mussels challenged with either vibrio and sampled at 6, 24 and 96 h post-injection, transient decreases in hemocyte LMS and progressive increases in serum lysozyme activity were observed, with V.s. > V.a.. Moreover, whereas V.a. was efficiently cleared from hemolymph, V.s. showed significant growth, that was maximal at 24 h p.i. when lowest LMS values were recorded in the hemocytes. Both vibrios also induced significant decreases in LMS in the digestive gland, again with V.s. > V.a.. The results indicate distinct interactions between mussel hemocytes and the two vibrio strains tested. The effects of V.s. may be due to the capacity of this strain to interfere with the signaling pathways involved in hemocyte function, thus escaping the bactericidal activity of the host cell, as observed for certain mammalian pathogens. Although V.s. is considered not pathogenic to Mytilus, this vibrio strain can affect the lysosomal function at the cellular and tissue level, thus leading to stressful conditions.
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Affiliation(s)
- T Balbi
- DISTAV, Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Università di Genova, Corso Europa 26, 16132 Genova, Italy
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Balbi T, Ciacci C, Fabbri R, Gallo G, Canesi L. In vitro effects of combined exposure to n-TiO2 and Cd 2+ in mussel cells. Comp Biochem Physiol A Mol Integr Physiol 2012. [DOI: 10.1016/j.cbpa.2012.05.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ciacci C, Barmo C, Fabbri R, Canonico B, Gallo G, Canesi L. Immunomodulation in Mytilus galloprovincialis by non-toxic doses of hexavalent chromium. Fish Shellfish Immunol 2011; 31:1026-1033. [PMID: 21925273 DOI: 10.1016/j.fsi.2011.09.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 07/18/2011] [Accepted: 09/06/2011] [Indexed: 05/31/2023]
Abstract
In aquatic organisms, the immune function can be affected by exposure to environmental pollutants, including heavy metals. In vertebrate systems, different forms of Cr have been shown induce either immunostimulatory or immunosuppressive processes. Hexavalent Cr, Cr(VI), is an important contaminant released from both domestic and industrial effluents, and the predominant chemical form of the metal in aquatic ecosystems. In this work, the in vitro and in vivo effects of Cr(VI) on immune parameters of the marine bivalve Mytilus galloprovincialis were evaluated. Hemocyte incubation with different concentrations of Cr(VI) (0.1-1-10-100 μM) induced a dose-dependent decrease in lysosomal membrane stability (LMS). Decreases in extracellular lysozyme release and phagocytic activity were also observed, with stronger effects at lower metal concentrations. On the other hand, in these conditions, Cr(VI) stimulated extracellular superoxide production and nitrite accumulation. The effects of Cr(VI) were also evaluated in mussels exposed to the metal (0.1-1-10 μg L(-1), corresponding to nanomolar concentrations) for 96 h. Decreases in hemocyte LMS values and in serum lysozyme activity were observed with increasing metal concentrations. Decreased phagocytic activity and increased NO production were recorded, with stronger effects at lower concentrations. In these conditions, decreased Total Hemocyte Counts (THC), but no necrotic/apoptotic processes were observed. Moreover, Cr(VI) at both 0.1 and 1 μg L(-1) seemed to induce significant changes in transcription of immune genes (lysozyme, Mytilin C, Myticin B, defensin, MgC1q), of the serotonin receptor (5-HTR) and of the stress protein HSP70, whereas that of the anti-apoptotic gene p53 was unaffected. Overall, the results indicate that exposure to non-toxic, environmentally relevant concentrations of Cr(VI) can modulate functional and molecular immune parameters in M. galloprovincialis.
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Affiliation(s)
- C Ciacci
- DISUAN, Dipartimento di Scienze dell'Uomo, dell'Ambiente e della Natura, Università Carlo Bo di Urbino, Italy
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Canesi L, Fabbri R, Gallo G, Vallotto D, Marcomini A, Pojana G. Biomarkers in Mytilus galloprovincialis exposed to suspensions of selected nanoparticles (Nano carbon black, C60 fullerene, Nano-TiO2, Nano-SiO2). Aquat Toxicol 2010; 100:168-177. [PMID: 20444507 DOI: 10.1016/j.aquatox.2010.04.009] [Citation(s) in RCA: 171] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Revised: 04/01/2010] [Accepted: 04/10/2010] [Indexed: 05/29/2023]
Abstract
The potential for ecological toxicity associated with nanomaterials is a growing area of investigation, in particular in the aquatic environment. In suspension feeding invertebrates, the cellular immune system and digestive gland are likely to be targeted, due to their highly developed processes for the cellular internalisation of nano- and micro-scale particles that are integral to key physiological functions such as cellular immunity and intracellular digestion. We have recently demonstrated that suspensions of selected commercial nanomaterials, namely Nano carbon black (NCB), C60 fullerene (C60), Nano-titanium dioxide (n-TiO2) and Nanosilica (n-SiO2) induce oxyradical production and lysosomal enzyme release in the hemocytes of the marine mussel Mytilus in vitro. In this work the possible effects of in vivo exposure to these NPs were investigated. Mussels were exposed to different concentrations (0.05-0.2-1-5mg/l) of NP suspensions for 24h and different biomarkers were evaluated in hemocytes, digestive gland and gills. Characterisation of NP suspensions in artificial sea water (ASW) was performed, indicating the formation of agglomerates of different sizes in the nano-micromolar range for different types of NPs. Formation of larger agglomerates was observed at the end of exposure. The results show that all NP suspensions induced significant lysosomal membrane destabilisation in both the hemocytes and the digestive gland, with NCB>>C60>n-TiO2, >n-SiO2. In the digestive gland, all NPs induced lysosomal lipofuscin accumulation only at the highest concentrations tested to a different extent depending on the NP type. NCB, TiO2 and SiO2 also induced lysosomal neutral lipid accumulation. Moreover, all NPs increased the activity of the antioxidant enzyme catalase, with n-SiO2>NCB≅TiO2>C60; NCB and n-TiO2 also stimulated glutathione transferase (GST). Changes in catalase and GST activities were also observed in gills, with both increases and decreases depending on NP type and concentration. The reported results demonstrate that in mussels responses to exposure to NP suspensions involve changes in lysosomal and oxidative stress biomarkers in the digestive gland, suggesting uptake of NP aggregates/agglomerates mainly through the digestive system. Overall, these data further support the hypothesis that suspension feeding invertebrates represent a significant target for NPs in the aquatic environment.
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Affiliation(s)
- L Canesi
- Dipartimento di Biologia, Università di Genova, Corso Europa 26, 16132 Genova, Italy.
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Massari A, Urbatzka R, Cevasco A, Canesi L, Lanza C, Scarabelli L, Kloas W, Mandich A. Aromatase mRNA expression in the brain of adult Xenopus laevis exposed to Lambro river water and endocrine disrupting compounds. Gen Comp Endocrinol 2010; 168:262-8. [PMID: 20417212 DOI: 10.1016/j.ygcen.2010.04.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 04/08/2010] [Accepted: 04/20/2010] [Indexed: 10/19/2022]
Abstract
Aromatase P450 (P450 arom; Cyp19) is a key enzyme for vertebrate reproduction and brain development that catalyzes the conversion of androgens to estrogens. The aim of this study was to improve the knowledge on EDC effects by analysing their potential impact on brain P450 arom in adult Xenopus laevis exposed for 4 weeks to an environmental sample, the water of the river Lambro (LAM), the most polluted tributary of the Po river in North Italy. Other groups were exposed to individual compounds 10(-8) M tamoxifen (TAM), ethinylestradiol (EE2), flutamide (FLU) and methyldihydrotestosterone (MDHT) known for their (anti)estrogenic and (anti)androgenic modes of action. Expression of CYP19 was evaluated in brain extracts by quantitative RT-PCR, using a pair of primers located in the open reading frame (ORF) that allowed the simultaneous amplification of all transcripts (Aro-ORF) and a pair of primers specific for brain aromatase (Aro-B). Significant increase in Aro-ORF and Aro-B mRNA levels were observed in both females and males exposed to LAM. Different changes were observed for the model compounds using two pairs of primers. Aro-ORF mRNA expression was significantly increased in EE2 and MDHT exposed males and in FLU-exposed females, while it was significantly decreased in TAM exposed females. Aro-B mRNA was significantly increased in both sexes exposed to FLU and decreased in TAM exposed females. In conclusion, aromatase mRNA in the brain of X. laevis was regulated differentially in a gender specific manner by certain (anti)estrogenic and (anti)androgenic EDCs, supporting previous hypotheses that diverse compounds present in the river Lambro may induce feminization and demasculinization effects.
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Affiliation(s)
- A Massari
- Department of Biology, University of Genoa, Italy.
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Canesi L, Barmo C, Fabbri R, Olivieri S, Gallo G, Boatti L, Dondero F, Viarengo A. Effects of hexavalent chromium in Mytilus galloprovincialis. Comp Biochem Physiol A Mol Integr Physiol 2010. [DOI: 10.1016/j.cbpa.2010.06.103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Canesi L, Barmo C, Fabbri R, Vergani L, Gallo G, Ciacci C, Roch P. Effects of Vibrio challenge on digestive gland biomarkers and gene expression in Mytilus galloprovincialis: Bacterial infection as a possible confounding factor in understanding biomarker responses. Comp Biochem Physiol A Mol Integr Physiol 2010. [DOI: 10.1016/j.cbpa.2010.06.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Grasselli E, Vergani L, Voci A, Gallo G, Canesi L. Testing the ‘obesogen’ hypothesis: Direct effects on of Bisphenol A (BPA) on lipid accumulation in rat hepatocytes. Comp Biochem Physiol A Mol Integr Physiol 2010. [DOI: 10.1016/j.cbpa.2010.06.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sforzini S, Dagnino A, Saggese I, Oliveri L, Negri A, Canesi L, Viarengo A. Use of the earthworm Eisenia andrei as model organism for soil toxicity assessments. Comp Biochem Physiol A Mol Integr Physiol 2010. [DOI: 10.1016/j.cbpa.2010.06.097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Dagnino A, Allen JI, Moore MN, Broeg K, Canesi L, Viarengo A. Development of an expert system for the integration of biomarker responses in mussels into an animal health index. Biomarkers 2008; 12:155-72. [PMID: 17536766 DOI: 10.1080/13547500601037171] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Biomarkers on sentinel organisms are utilised worldwide in biomonitoring programs. However, the lack of effective interpretational capacity has hampered their uptake for use for assessment of risk in environmental management. The aim of the present study was to develop and test an objective decision-support or expert system capable of integrating biomarker results into a five-level health-status index. The expert system is based on a set of rules derived from available data on responses to natural and contaminant-induced stress of marine mussels. Integration of parameters includes: level of biological organization; biological significance; mutual interrelationship; and qualitative trends in a stress gradient. The system was tested on a set of biomarker data obtained from the field and subsequently validated with data from previous studies. The results demonstrate that the expert system can effectively quantify the biological effects of different levels of pollution. The system represents a simple tool for risk assessment of the harmful impact of contaminants by providing a clear indication of the degree of stress syndrome induced by pollutants in mussels.
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Affiliation(s)
- A Dagnino
- Dipartimento di Scienze dell'Ambiente e della Vita, Università del Piemonte Orientale Amedeo Avogadro', Alessandria, Italy
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Ciacci C, Betti M, Roch P, Fabbri R, Borghi C, Canesi L. Functional response of mussels to bacterial challenge. Comp Biochem Physiol A Mol Integr Physiol 2008. [DOI: 10.1016/j.cbpa.2008.05.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Canesi L, Borghi C, Gallo G, Caprì F, Viarengo A, Dondero F. Effects of the organophosphate pesticide Chlorpyriphos on the responses of Mytilus digestive gland to the natural estrogen 17β-Estradiol. Comp Biochem Physiol A Mol Integr Physiol 2008. [DOI: 10.1016/j.cbpa.2008.05.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Canesi L, Lorusso LC, Ciacci C, Betti M, Regoli F, Poiana G, Gallo G, Marcomini A. Effects of blood lipid lowering pharmaceuticals (bezafibrate and gemfibrozil) on immune and digestive gland functions of the bivalve mollusc, Mytilus galloprovincialis. Chemosphere 2007; 69:994-1002. [PMID: 17573095 DOI: 10.1016/j.chemosphere.2007.04.085] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2007] [Revised: 04/11/2007] [Accepted: 04/29/2007] [Indexed: 05/15/2023]
Abstract
Fibrates are hypolipidemic pharmaceuticals that have been detected as contaminants in wastewaters and surface waters. In this work, the possible effects of two fibrates, Bezafibrate (BEZA) and Gemfibrozil (GEM) in the bivalve mollusc Mytilus spp were investigated. In the immune cells, the hemocytes, addition of both compounds in vitro induced rapid lysosomal membrane destabilization, extracellular lysozyme release, NO production and decreased phagocytic activity. The effect of fibrates were partly mediated by activation of ERK and p38 MAPKs (Mitogen Activated Protein Kinases), as demonstrated by the use of specific inhibitors of different kinases. The effects of fibrates on hemocyte function were confirmed in vivo, in the hemocytes of mussels injected with 0.01, 0.1 and 1 nmol/animal (corresponding to nominal concentrations of 3.61, 36.18 and 361.8ng/g dry weight for BEZA and of 2.50, 25.03 and 250.35 ng/g dry weight for GEM, respectively) and sampled at 24h post-injection. Both compounds induced a concentration-dependent lysosomal destabilization and extracellular lysozyme release; an increase in phagocytosis was observed at the highest concentration. In vivo exposure to fibrates also induced significant effects on mussel digestive gland, the key metabolic organ in bivalves. Both BEZA and GEM increased the activity of the glycolytic enzymes phosphofructokinase (PFK) and pyruvate kinase (PK), and of Glutathione transferase (GST) glutathione reductase (GSR), and total glutathione content. A significant increase in the peroxisomal enzyme catalase was observed; however, BEZA exposure decreased Palmytoyl CoA oxidase activity, whereas GEM was ineffective. The results indicate that in mussels environmental concentrations of hypolipidemic drugs can affect the immune function, as well as glycolysis, redox balance and peroxisomal function.
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Affiliation(s)
- L Canesi
- Dipartimento di Biologia, Università di Genova, Corso Europa 26, 16132, Italy.
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Porte C, Janer G, Lorusso LC, Ortiz-Zarragoitia M, Cajaraville MP, Fossi MC, Canesi L. Endocrine disruptors in marine organisms: approaches and perspectives. Comp Biochem Physiol C Toxicol Pharmacol 2006; 143:303-15. [PMID: 16723279 DOI: 10.1016/j.cbpc.2006.03.004] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2005] [Revised: 03/14/2006] [Accepted: 03/15/2006] [Indexed: 11/20/2022]
Abstract
Organic pollutants exhibiting endocrine disrupting activity (Endocrine Disruptors--EDs) are prevalent over a wide range in the aquatic ecosystems; most EDs are resistant to environmental degradation and are considered ubiquitous contaminants. The actual potency of EDs is low compared to that of natural hormones, but environmental concentrations may still be sufficiently high to produce detrimental biological effects. Most information on the biological effects and mechanisms of action of EDs has been focused on vertebrates. Here we summarize recent progress in studies on selected aspects of endocrine disruption in marine organisms that are still poorly understood and that certainly deserve further research in the near future. This review, divided in four sections, focuses mainly on invertebrates (effects of EDs and mechanisms of action) and presents data on top predators (large pelagic fish and cetaceans), a group of vertebrates that are particularly at risk due to their position in the food chain. The first section deals with basic pathways of steroid biosynthesis and metabolism as a target for endocrine disruption in invertebrates. In the second section, data on the effects and alternative mechanisms of action of estrogenic compounds in mussel immunocytes are presented, addressing to the importance of investigating full range responses to estrogenic chemicals in ecologically relevant invertebrate species. In the third section we review the potential use of vitellogenin (Vtg)-like proteins as a biomarker of endocrine disruption in marine bivalve molluscs, used worldwide as sentinels in marine biomonitoring programmes. Finally, we summarize the results of a recent survey on ED accumulation and effects on marine fish and mammals, utilizing both classical biomarkers of endocrine disruption in vertebrates and non-lethal techniques, such as non-destructive biomarkers, indicating the toxicological risk for top predator species in the Mediterranean. Overall, the reviewed data underline the potential to identify specific types of responses to specific groups of chemicals such as EDs in order to develop suitable biomarkers that could be useful as diagnostic tools for endocrine disruption in marine invertebrates and vertebrates.
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Affiliation(s)
- C Porte
- Environmental Chemistry Dept., IIQAB-CSIC-, C/ Jordi Girona 18, 08034 Barcelona, Spain.
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Canesi L, Scarpato A, Betti M, Ciacci C, Pruzzo C, Gallo G. Bacterial killing by Mytilus hemocyte monolayers as a model for investigating the signaling pathways involved in mussel immune defence. Mar Environ Res 2002; 54:547-551. [PMID: 12408615 DOI: 10.1016/s0141-1136(02)00144-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The signaling pathways involved in mussel immune defence were investigated utilizing a model of killing of Escherichia coli by Mytilus galloprovincialis hemocytes in a co-culture setting. In particular, the role played by different mitogen activated protein kinases (MAPKs) and by the production of eicosanoids were investigated utilising specific cell permeant, pharmacological enzyme inhibitors. Hemocyte pretreatment with the p38 MAPK inhibitor SB203580 significantly reduced bacterial killing, whereas PD98059 (an inhibitor of ERK--extracellularly regulated kinase--MAPK activation) had no significant effect. Wortmannin also inhibited bacterial killing, indicating a crucial role for PI3-kinase activation in the immune response. Killing of E. coli was also reduced by inhibitors of both PLA2 and cyclooxygenase activities, indicating that eicosanoid production is involved in mediating the response to bacterial challenge. The results demonstrate that bacterial killing by mussel hemocytes is particularly sensitive to inhibitors of the key steps involved in the transduction of bacterial signals into the host cell. Moreover, these data indicate that the hemocyte bactericidal activity can be suitably utilized not only for identifying the signaling pathways involved in the response to bacterial infection, but also as a potential investigative-toxicology model to test drugs and contaminants for their effect on the overall mussel immune defence.
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Affiliation(s)
- L Canesi
- Istituto di Scienze Fisiologiche, Università di Urbino, PS, Italy.
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Abstract
The possible effects of zinc in the modulation of the activity of glycolytic enzymes phosphofructokinase and pyruvate kinase through tyrosine kinase-mediated signal transduction in isolated digestive gland cells from mussels (Mytilus galloprovincialis Lam.) were investigated. Addition of micromolar concentrations of zinc resulted in both time- and concentration-dependent stimulation of glycolytic enzyme activities similar to those previously observed with insulin; however, zinc pretreatment prevented the glycolytic effect of insulin in mussel cells. The insulin-like effect of zinc was mediated by increased tyrosine phosphorylation of multiple proteins, as demonstrated by Western blotting with antiphosphotyrosine antibodies. The pattern of zinc-induced phosphorylation resembled that induced by insulin. Moreover, both zinc and insulin induced activation of mitogen activated protein kinases (MAPKs); however, whereas zinc gave a clear effect on the stress-activated p-38 MAPK, insulin activated extracellular-activated MAPK (ERK2) and inhibited p-38. The results demonstrate that zinc can act as a physiological regulator of tyrosine kinase-mediated cell signaling in mussel digestive gland cells, in particular at the level of MAPK activation. Activation of p-38 by zinc may be a key step in prevention of the glycolytic effect of insulin in mussel cells. These data underline the importance of cross talk between different MAPKs in determination of the response to extracellular stimuli in marine invertebrate cells.
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Affiliation(s)
- L Canesi
- Istituto Scienze Fisiologiche, Università di Urbino, Loc. Crocicchia, Urbino (PU), 61029, Italy
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Mannello F, Canesi L, Gazzanelli G, Gallo G. Biochemical properties of metalloproteinases from the hemolymph of the mussel Mytilus galloprovincialis Lam. Comp Biochem Physiol B Biochem Mol Biol 2001; 128:507-15. [PMID: 11250546 DOI: 10.1016/s1096-4959(00)00352-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The expression of matrix metalloproteinases (MMP) with gelatinase activity was found in the whole hemolymph of the marine mussel Mytilus galloprovincialis Lam. Cleavage activity was specific for gelatin; very little activity towards human type-IV collagen, and no activity for cold fish gelatin, casein or bovine serum albumin were detected. EDTA and 1,10-phenanthroline were inhibitory, suggesting that mussel MMPs require divalent cations for their proteolytic activity; in fact, the presence of exogenously added divalent ions significantly protected the MMPs from inhibition. No inhibition was detected with serine or cysteine proteinase inhibitors. The specific vertebrate inhibitors as well as the classical vertebrate activator of MMPs were without effect, whereas sulphydryl reducing agents had a strong inhibitory effect. Mussel MMPs showed an exponential curve of thermal-dependent decay that was not protected by the presence of metal ions. Overall the results indicate both similarities and differences between invertebrate and vertebrate gelatinases, providing information for understanding the biological role of these ancient proteinases.
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Affiliation(s)
- F Mannello
- Istituto di Istologia ed Analisi di Laboratorio, Facoltà di Scienze Matematiche, Fisiche e Naturali, Libera Università degli Studi, Via E. Zeppi, 61029 Urbino (PU), Italy.
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Canesi L, Pruzzo C, Tarsi R, Gallo G. Surface interactions between Escherichia coli and hemocytes of the Mediterranean mussel Mytilus galloprovincialis lam. leading to efficient bacterial clearance. Appl Environ Microbiol 2001; 67:464-8. [PMID: 11133482 PMCID: PMC92602 DOI: 10.1128/aem.67.1.464-468.2001] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2000] [Accepted: 10/23/2000] [Indexed: 11/20/2022] Open
Abstract
The role of type 1 fimbriae in the interactions between Escherichia coli and Mytilus galloprovincialis Lam. hemocytes was evaluated. The association of fimbriated strain MG155 with hemocyte monolayers at 18 degrees C was 1.5- and 3- to 4-fold greater than the association of unfimbriated mutant AAEC072 in artificial seawater and in hemolymph serum, respectively. Such differences were apparently due to different adhesive properties since MG155 adhered more efficiently than AAEC072 when hemocytes were incubated at 4 degrees C to inhibit the internalization process. Hemolymph serum increased both association and adherence of MG155 two- to threefold but did not affect association and adherence of AAEC072. MG155 was also 1.5- to 1.7-fold more sensitive to killing by hemocytes than AAEC072, as evaluated by the number of culturable bacteria after 60 and 120 min of incubation. The role of type 1 fimbriae in MG155 interactions with hemocytes was confirmed by the inhibitory effect of D-mannose. In in vivo experiments MG155 cells were cleared from circulating hemolymph more rapidly than AAEC072 cells were cleared. These results confirm that surface properties are crucial in influencing bacterial persistence and survival within mussel hemolymph.
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Affiliation(s)
- L Canesi
- Istituto di Scienze Fisiologiche, Facoltà di Scienze Ambientali, Università di Urbino, Urbino, Italy
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Canesi L, Malatesta M, Battistelli S, Ciacci C, Gallo G, Gazzanelli G. Immunoelectron microscope analysis of epidermal growth factor receptor (EGFR) in isolated Mytilus galloprovincialis (Lam.) digestive gland cells: evidence for ligand-induced changes in EGFR intracellular distribution. J Exp Zool 2000; 286:690-8. [PMID: 10797321 DOI: 10.1002/(sici)1097-010x(20000601)286:7<690::aid-jez3>3.0.co;2-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In mammalian cells, the binding of epidermal growth factor (EGF) to its receptor (EGFR), a glycoprotein with intrinsic tyrosine kinase activity, leads to the pleiotropic responses to EGF. Among these, a negative feedback response by stimulation of receptor internalization and lysosomal degradation, this attenuating signal transduction. In this work, data are reported on the identification of specific EGFRs in isolated digestive gland cells from the marine mussel (Mytilus galloprovincialis Lam.) By immunoelectron microscopy. In control digestive cells, EGFR immunoreactivity was mainly associated with cytoplasmic membrane structures and, to a lesser extent, the cell membrane. The presence of EGFR-like receptors was confirmed by Western blotting of digestive gland cell extracts with two different monoclonal antibodies that recognize either intracellular or extracellular epitopes. The addition of mammalian EGF resulted in significant time and temperature-dependent changes in EGFR subcellular distribution in mussel cells. In cells exposed to EGF for 0-15 min at 4 degrees C, the distribution of EGFR was not significantly different from that of the control cells. On the other hand, at 18 degrees C, an increased labelling along the cell membrane was observed after 5-10 min after EGF addition, with a concomitant decrease in the cytoplasmic signal. Moreover, after 20 min of exposure to EGF, ligand binding apparently resulted in EGFR compartmentation within the lysosomes. These observations were confirmed by quantitative analysis of EGFR labelling at different times of EGF exposure. Similar results were obtained utilizing the two different monoclonal antibodies. The results indicate that, in mussel digestive cells, the binding of heterologous EGF to specific receptors induces a negative feedback response by stimulating the lysosomal degradation of EGFR, thus suggesting the presence of mechanisms responsible for receptor downregulation similar to those observed in mammalian cells.
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Affiliation(s)
- L Canesi
- Istituto di Scienze Fisiologiche, Loc. Crocicchia, Urbino, Italy.
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Canesi L, Ciacci C, Gallo G. Hg(2+) and Cu(2+) interfere with agonist-mediated Ca(2+) signaling in isolated Mytilus digestive gland cells. Aquat Toxicol 2000; 49:1-11. [PMID: 10814802 DOI: 10.1016/s0166-445x(99)00077-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The effects of mercury and copper on agonist-mediated Ca-signaling were investigated in isolated cells from the marine mussel, Mytilus galloprovincialis Lam., by single cell fluorescence microscopy. In isolated digestive gland cells, short-term exposure (10 min) to both Hg(2+), a highly toxic metal and Cu(2+), an essential metal, in the nano-low µM range caused a sustained increase in cytosolic [Ca(2+)]. The effect of mercury on resting [Ca(2+)] was stronger than that of copper. The Hg-induced elevation in [Ca(2+)] seemed to be mainly due to an increased influx through Verapamil-sensitive Ca-channels, whereas the effect of Cu(2+) was related to a release from thapsigargin-sensitive intracellular stores. Agonists, such as epidermal growth factor (EGF), bradykinin (BK) and ATP, evoked Ca(2+) transients in isolated digestive gland cells through different mechanisms similar to those observed in mammalian cells, demonstrating the presence of common pathways of Ca-mediated cell signaling in both invertebrates and vertebrates. The agonist-mediated Ca(2+) response was affected by exposure to Hg(2+) and Cu(2+) in a concentration dependent manner: both metals significantly reduced the amplitude of the Ca(2+) spikes elicited by BK and ATP and decreased the percentage of EGF-responsive cells. The effects of Hg(2+) and Cu(2+) were apparently independent of their different type of interaction with the mechanisms involved in Ca(2+) homeostasis. The results clearly demonstrate that, in marine invertebrate cells, short-term exposure to heavy metal concentrations comparable to environmental exposure levels results in alterations of intracellular Ca(2+) homeostasis which compromise the cell response to extracellular stimuli involving Ca-mediated signaling. The mechanisms of heavy metal interference with Ca-homeostasis and signaling are discussed.
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Affiliation(s)
- L Canesi
- Istituto di Scienze Fisiologiche, Università di Urbino, Campus Universitario-Loc. Crocicchia, 61029, Urbino, Italy
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Canesi L, Ciacci C, Betti M, Gallo G. Growth factor-mediated signal transduction and redox balance in isolated digestive gland cells from Mytilus galloprovincialis Lam. Comp Biochem Physiol C Toxicol Pharmacol 2000; 125:355-63. [PMID: 11790356 DOI: 10.1016/s0742-8413(99)00120-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
In mammalian cells, a growing body of evidence indicates a relationship between cellular redox balance and tyrosine kinase-mediated cell signalling. The phosphorylative cascade activated by extracellular signals is inhibited by reducing conditions and stimulated by oxidative stress, in particular at the level of mitogen activated protein kinase (MAPK) activation. The mussel Mytilus typically shows variations in antioxidant defence systems and decreases in glutathione content in response to both natural and contaminant environmental stressors. In isolated mussel digestive gland cells, both epidermal growth factor (EGF) and insulin-like growth factor-I (IGF-I) have been recently demonstrated to activate tyrosine kinase receptors leading to multiple responses; among these, stimulation of the key glycolytic enzymes phosphofructokinase (PFK) and pyruvate kinase (PK). The present study investigates the possible relationship between the tyrosine kinase-mediated metabolic effects of growth factors and cellular redox balance in mussel cells. The results demonstrate that the effects of growth factors on glycolytic enzymes were abolished by cell pretreatment with the antioxidant N-acetyl-cysteine (NAC). On the other hand, in cells where the glutathione content and synthesis were lowered either in vitro (by cell pretreatment with buthionine sulfoximine (BSO)), or in vivo (by mussel exposure to Cu(2+)) the metabolic effects of growth factors were unaffected. Moreover, the results show that, in both control and glutathione-depleted cells, growth factors can also regulate the level of glutathione apparently by modulating, via phosphorylative mechanisms involving MAPK activation, the activity of gamma-glutamylcysteine synthetase (GCS), the rate limiting enzyme in GSH biosynthesis. Overall, this study extends the hypothesis that cell signalling is intimately related to redox balance in marine invertebrate cells.
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Affiliation(s)
- L Canesi
- Istituto di Scienze Fisiologiche, Università di Urbino, Loc. Crocicchia, Urbino (PS), Italy.
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Canesi L, Ciacci C, Betti M, Malatesta M, Gazzanelli G, Gallo G. Growth factors stimulate the activity of key glycolytic enzymes in isolated digestive gland cells from mussels (Mytilus galloprovincialis Lam.) through tyrosine kinase mediated signal transduction. Gen Comp Endocrinol 1999; 116:241-8. [PMID: 10562454 DOI: 10.1006/gcen.1999.7366] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Digestive gland cells isolated from mussels (Mytilus) have previously been demonstrated to respond to mammalian EGF with a cytosolic Ca(2+) transient and stimulated DNA synthesis; both responses were mediated by activation of tyrosine kinase receptors. The present study examines the mechanisms involved in further signal progression and possible targets of phosphorylation/dephosphorylation processes. The effects of EGF, IGF-I, and insulin on the activity of two key glycolytic enzymes PFK (phosphofructokinase) and PK (pyruvate kinase) were evaluated. All the peptides tested induced a transient and dose-dependent stimulation of the activity of both PFK and PK, which involved activation of MAPKs. Quantitative immunoelectron microscopy, utilizing monoclonal anti-phosphotyrosine antibodies, revealed that EGF induced a transient increase in tyrosine phosphorylation. The results demonstrate that, in marine invertebrate cells, activation of tyrosine kinase membrane receptors by growth factors triggers signal transduction pathways involving a phosphorylative cascade similar to that of mammalian cells. Moreover, these data suggest that, in mussel cells, growth factors may play a physiological role in the in vivo regulation of glucose metabolism by modulating, through reversible phosphorylation, the activity of key glycolytic enzymes.
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Affiliation(s)
- L Canesi
- Istituto di Scienze Fisiologiche, Universit¿a di Urbino, Loc. Crocicchia
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Canesi L, Ciacci C, Piccoli G, Stocchi V, Viarengo A, Gallo G. In vitro and in vivo effects of heavy metals on mussel digestive gland hexokinase activity: the role of glutathione. Comp Biochem Physiol C Pharmacol Toxicol Endocrinol 1998; 120:261-8. [PMID: 9827040 DOI: 10.1016/s0742-8413(98)10004-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Hexokinase (E.C. 2.7.1.1), the enzyme responsible for glucose phosphorylation to G-6P, is inactivated by SH reagents and oxyradicals, and its inhibition has been involved in heavy metal toxicity in mammalian systems. In this work, the possibility that hexokinase activity could be affected by both heavy metal binding and oxidative stress conditions also in mussel tissues (Mytilus galloprovincialis Lam.) was investigated. The results obtained in vitro demonstrate that heavy metals inhibited digestive gland hexokinase (with Cd2+ > Cu2+ > Hg2+ > Zn2+ > Pb2+) and suggest a role for GSH in the protection against the heavy metal effects. Hexokinase activity was also reduced by addition of iron/ascorbate, indicating a susceptibility of the enzyme to metal-mediated oxyradical production. The effects of Cu2+ treatment (3 days, 40 micrograms l-1 per animal) on hexokinase activity and on the GSH/GSSG status were then evaluated in mussels exposed to a cycle of air exposure/reimmersion. In Cu-exposed mussels, a significant decrease in hexokinase activity and a parallel reduction in tissue GSH levels were observed, suggesting that the two effects of metal treatment could be related; however, hexokinase activity progressively recovered during air exposure and reimmersion, whereas the level of GSH showed a further decrease during air exposure followed by recovery after reimmersion. The in vitro results therefore indicate that mussel digestive gland hexokinase is susceptible to inactivation by heavy metal binding and suggest a role for GSH in the protection against the effects of heavy metals. The effects of copper were confirmed by the results obtained in vivo. The possible relationship between hexokinase activity and the level of GSH in the digestive gland of control and Cu-exposed mussels during air exposure and reimmersion are discussed, taking into account the balance between pro-oxidant and antioxidant processes at different stages of exposure.
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Affiliation(s)
- L Canesi
- Istituto di Anatomia e Fisiologia, Crocicchia, Urbino, Italy
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Abstract
Effects of epidermal growth factor (EGF) and possible mechanisms of EGF-mediated signal transduction were investigated in isolated cells of the digestive gland of the mussel (Mytilus galloprovincialis Lam. ). EGF induced a cytosolic Ca2+ transient and subsequently stimulated DNA synthesis; both effects were dose-dependent in the nanomolar range and inhibited by pretreatment with an inhibitor of tyrosine kinase activity, suggesting specific EGFR-like receptors. The EGF-induced cytosolic Ca2+ transient was mainly due to a Ca2+ influx through the plasma membrane, possibly involving voltage-insensitive Ca2+ channels. Such a Ca2+ response was abolished by pretreatment with indomethacin and NDGA, inhibitors of arachidonic acid metabolism; similarly, the EGF-stimulated increase in DNA synthesis was significantly reduced. Indomethacin, a cyclooxygenase inhibitor, had the greatest effect on both EGF-induced responses. Results suggest the presence of EGF-responsive cells in the mussel digestive gland. A possible role for arachidonic acid and its metabolites in mediating the effects of EGF is also indicated.
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Affiliation(s)
- L Canesi
- Istituto di Anatomia e Fisiologia, Università di Urbino, Via Budassi 28, Urbino, PS, 61029, Italy
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Canesi L, Viarengo A. Age-related Differences in Glutathione Metabolism in Mussel Tissues (Mytilus edulis L.). Comp Biochem Physiol B Biochem Mol Biol 1997. [DOI: 10.1016/s0305-0491(96)00223-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Viarengo A, Canesi L, Garcia Martinez P, Peters L, Livingstone† D. Pro-oxidant processes and antioxidant defence systems in the tissues of the Antarctic scallop (Adamussium colbecki) compared with the Mediterranean scallop (Pecten jacobaeus). Comp Biochem Physiol B Biochem Mol Biol 1995. [DOI: 10.1016/0305-0491(94)00228-m] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Viarengo A, Canesi L, Pertica M, Livingstone DR, Orunesu M. Age-related lipid peroxidation in the digestive gland of mussels: The role of the antioxidant defence systems. ACTA ACUST UNITED AC 1991. [DOI: 10.1007/bf01959942] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Viarengo A, Canesi L, Pertica M, Livingstone DR. Seasonal variations in the antioxidant defence systems and lipid peroxidation of the digestive gland of mussels. Comp Biochem Physiol C Comp Pharmacol Toxicol 1991; 100:187-90. [PMID: 1677853 DOI: 10.1016/0742-8413(91)90151-i] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
1. The seasonal variations in the level of antioxidant compounds (glutathione (GSH), vitamin E, carotenoids) and in the activity of antioxidant enzymes, superoxide dismutase (EC 1.15.1.1), catalase (EC 1.11.1.6), GSH-peroxidase (EC 1.11.1.9) in the digestive gland of mussels (Mytilus sp.) were evaluated. The lipid peroxidation process was also measured by determining the tissue concentration of malondialdehyde (MDA). 2. The physiological fluctuations of the antioxidant defence systems were inversely related to the accumulation of lipid peroxidation products (MDA) in the tissue. The observed seasonal variations are presumably related to the changing metabolic status of the animals, itself dependent on such factors as gonad ripening and food availability. 3. In particular, the obtained data indicate that a reduction of the antioxidant defence systems, occurring during winter, could be directly responsible for an enhanced susceptibility of mussels tissues to oxidative stress, as indicated by the high MDA concentration observed in this period.
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Affiliation(s)
- A Viarengo
- Istituto di Fisiologia Generale, Genova, Italy
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Viarengo A, Canesi L, Pertica M, Poli G, Moore M, Orunesu M. Heavy metal effects on lipid peroxidation in the tissues of mytilus gallopro vincialis lam. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0742-8413(90)90168-9] [Citation(s) in RCA: 117] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Viarengo A, Pertica M, Canesi L, Mazzucotelli A, Orunesu M, Bouquegneau J. Purification and biochemical characterization of a lysosomal copper-rich thionein-like protein involved in metal detoxification in the digestive gland of mussels. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0742-8413(89)90252-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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