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Munari M, Matozzo V, Chemello G, Riedl V, Pastore P, Badocco D, Marin MG. Seawater acidification and emerging contaminants: A dangerous marriage for haemocytes of marine bivalves. Environ Res 2019; 175:11-21. [PMID: 31100511 DOI: 10.1016/j.envres.2019.04.032] [Citation(s) in RCA: 10] [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: 02/11/2019] [Revised: 04/01/2019] [Accepted: 04/29/2019] [Indexed: 06/09/2023]
Abstract
The combined effects of seawater acidification and the non-steroidal anti-inflammatory drug diclofenac on haemocyte parameters of the mussel Mytilus galloprovincialis and the clam Ruditapes philippinarum were investigated for the first time. Animals were maintained for one week (T0) in natural pH condition (8.1) and two reduced pH values (pH -0.4 units and pH -0.7 units). Bivalves were then exposed for additional 14 days (T1 and T2) to the three experimental pH values in both the presence and absence of environmentally realistic concentrations of diclofenac (0.05 and 0.50 μg/L). To assess potential impairment in immunosurveillance, haemocyte parameters (total haemocyte count, haemocyte volume and diameter, Neutral Red uptake, haemocyte proliferation and lysozyme activity) were measured after 7, 14 and 21 days of exposure to differing pH value or pH/diclofenac combinations. In both species, pH affected the whole haemocyte data set at all sampling times, influencing most of the parameters measured at T0 and T1 in clams, and at T2 in mussels. Conversely, in both species diclofenac affected the overall haemocyte response at T2 only. However, in R. philippinarum a higher number of haemocyte parameters were significantly influenced even at T1. A significant interaction between pH and diclofenac was mainly evident in mussels, affecting haemocyte size and lysozyme activity at both T1 and T2. Overall, the results obtained demonstrated that the experimental conditions tested can alter markedly haemocyte parameters in marine bivalves.
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Affiliation(s)
- Marco Munari
- Department of Biology, University of Padova, via Ugo Bassi 58/B, 35121, Padova, Italy
| | - Valerio Matozzo
- Department of Biology, University of Padova, via Ugo Bassi 58/B, 35121, Padova, Italy
| | - Giulia Chemello
- Department of Biology, University of Padova, via Ugo Bassi 58/B, 35121, Padova, Italy
| | - Verena Riedl
- Department of Biology, University of Padova, via Ugo Bassi 58/B, 35121, Padova, Italy
| | - Paolo Pastore
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131, Padova, Italy
| | - Denis Badocco
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131, Padova, Italy
| | - Maria Gabriella Marin
- Department of Biology, University of Padova, via Ugo Bassi 58/B, 35121, Padova, Italy.
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Riedl V, Agatz A, Benstead R, Ashauer R. Factors Affecting the Growth of Pseudokirchneriella subcapitata in Single-Species Tests: Lessons for the Experimental Design and the Reproducibility of a Multitrophic Laboratory Microcosm. Environ Toxicol Chem 2019; 38:1120-1131. [PMID: 30779376 DOI: 10.1002/etc.4393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 11/17/2018] [Accepted: 02/09/2019] [Indexed: 06/09/2023]
Abstract
The need for an integrated risk assessment at an ecologically relevant scale (e.g., at the population/community levels) has been acknowledged. Multispecies systems with increased ecological complexity, however, are difficult if not impossible to reproduce. The laboratory-scale microcosm TriCosm (Pseudokirchneriella subcapitata, Ceriodaphnia dubia, Hydra viridissima) of intermediate complexity was developed for the reproducible assessment of chemical effects at the population/community levels. The system dynamics were repeatable in the short term, but interexperimental variation of algal dynamics in the long term triggered knock-on effects on grazer and predator populations. We present 20 experiments to assess the effects of 12 factors (test medium, vessel type/condition, shaking speed, light intensity/regime, inoculation density, medium preparation components, metal concentration/composition, buffering salt type/concentration) on algal growth in the TriCosm enclosure. Growth rates varied between ≤ 0 and 1.40 (± 0.21) and generally were greatest with increased shaking speed, light exposure, medium buffer, or aeration time. Treatments conducted in dishes with aseptically prepared, lightly buffered, and/or hardly aerated medium resulted in low growth rates. We found that inter-experimental variation of algal dynamics in the TriCosm was caused by a modification of medium preparation (omission of medium aeration) with the aim of reducing microbial contamination. Our findings highlight the facts that consistency in experimental procedures and in-depth understanding of system components are indispensable to achieve repeatability. Environ Toxicol Chem 2019;00:1-13. © 2019 SETAC.
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Affiliation(s)
- Verena Riedl
- Environment Department, University of York, Heslington, York, United Kingdom
- Centre for Chemical Safety and Stewardship, Fera Science Ltd., Sand Hutton, York, United Kingdom
| | - Annika Agatz
- Environment Department, University of York, Heslington, York, United Kingdom
| | - Rachel Benstead
- Centre for Chemical Safety and Stewardship, Fera Science Ltd., Sand Hutton, York, United Kingdom
| | - Roman Ashauer
- Environment Department, University of York, Heslington, York, United Kingdom
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Munari M, Matozzo V, Gagné F, Chemello G, Riedl V, Finos L, Pastore P, Badocco D, Marin MG. Does exposure to reduced pH and diclofenac induce oxidative stress in marine bivalves? A comparative study with the mussel Mytilus galloprovincialis and the clam Ruditapes philippinarum. Environ Pollut 2018; 240:925-937. [PMID: 29949844 DOI: 10.1016/j.envpol.2018.05.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [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: 01/11/2018] [Revised: 04/26/2018] [Accepted: 05/01/2018] [Indexed: 06/08/2023]
Abstract
CO2-driven acidification and emerging contaminants, such as pharmaceuticals, pose new threats for the maintenance of natural populations of marine organisms by interfering with their normal biochemical pathways and defences. The combined effects of seawater acidification, as predicted in climate change scenarios, and an emerging contaminant (the non-steroidal anti-inflammatory drug, NSAID, diclofenac) on oxidative stress-related parameters were investigated in the Mediterranean mussel Mytilus galloprovincialis and the Manila clam Ruditapes philippinarum. A flow-through system was used to carry out a three-week exposure experiment with the bivalves. First, the animals were exposed to only three pH values for 7 days. The pH was manipulated by dissolving CO2 in the seawater to obtain two reduced pH treatments (pH -0.4 units and pH -0.7 units), which were compared with seawater at the natural pH level (8.1). Thereafter, the bivalves were concomitantly exposed to the three experimental pH values and environmentally relevant concentrations of diclofenac (0.00, 0.05 and 0.50 μg/L) for an additional 14 days. The activities of superoxide dismutase, catalase and cyclooxygenase, and lipid peroxidation and DNA strand-break formation were measured in both the gills and digestive gland after 7, 14 and 21 days of exposure to each experimental condition. The results show that the biochemical parameters measured in both the mussels and clams were more influenced by the reduced pH than by the contaminant or the pH*contaminant interaction, although the biomarker variation patterns differed depending on the species and tissues analysed. Generally, due to increases in its antioxidant defence, M. galloprovincialis was more resistant than R. philippinarum to both diclofenac exposure and reduced pH. Conversely, reduced pH induced a significant decrease in COX activity in both the gills and digestive gland of clams, possibly resulting in the increased DNA damage observed in the digestive gland tissue.
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Affiliation(s)
- Marco Munari
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35121 Padova, Italy.
| | - Valerio Matozzo
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35121 Padova, Italy
| | - François Gagné
- Environment and Climate Change Canada, Water Science and Technology, Aquatic Contaminants Research Division, 105 McGill Street, 7th Floor, Montreal, Quebec H2Y 2E7, Canada
| | - Giulia Chemello
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35121 Padova, Italy
| | - Verena Riedl
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35121 Padova, Italy
| | - Livio Finos
- Department of Developmental Psychology and Socialisation, University of Padova, Via Venezia 8, 35131 Padova, Italy
| | - Paolo Pastore
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Denis Badocco
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Maria Gabriella Marin
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35121 Padova, Italy
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Riedl V, Agatz A, Benstead R, Ashauer R. A standardized tritrophic small-scale system (TriCosm) for the assessment of stressor-induced effects on aquatic community dynamics. Environ Toxicol Chem 2018; 37:1051-1060. [PMID: 29115695 DOI: 10.1002/etc.4032] [Citation(s) in RCA: 2] [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: 09/15/2017] [Revised: 10/23/2017] [Accepted: 11/03/2017] [Indexed: 06/07/2023]
Abstract
Chemical impacts on the environment are routinely assessed in single-species tests. They are employed to measure direct effects on nontarget organisms, but indirect effects on ecological interactions can only be detected in multispecies tests. Micro- and mesocosms are more complex and environmentally realistic, yet they are less frequently used for environmental risk assessment because resource demand is high, whereas repeatability and statistical power are often low. Test systems fulfilling regulatory needs (i.e., standardization, repeatability, and replication) and the assessment of impacts on species interactions and indirect effects are lacking. In the present study we describe the development of the TriCosm, a repeatable aquatic multispecies test with 3 trophic levels and increased statistical power. High repeatability of community dynamics of 3 interacting aquatic populations (algae, Ceriodaphnia, and Hydra) was found with an average coefficient of variation of 19.5% and the ability to determine small effect sizes. The TriCosm combines benefits of both single-species tests (fulfillment of regulatory requirements) and complex multispecies tests (ecological relevance) and can be used, for instance, at an intermediate tier in environmental risk assessment. Furthermore, comparatively quickly generated population and community toxicity data can be useful for the development and testing of mechanistic effect models. Environ Toxicol Chem 2018;37:1051-1060. © 2017 SETAC.
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Affiliation(s)
- Verena Riedl
- Environment Department, University of York, Heslington, York, United Kingdom
- Fera Science Ltd., Centre for Chemical Safety and Stewardship, Sand Hutton, York, United Kingdom
| | - Annika Agatz
- Environment Department, University of York, Heslington, York, United Kingdom
| | - Rachel Benstead
- Fera Science Ltd., Centre for Chemical Safety and Stewardship, Sand Hutton, York, United Kingdom
| | - Roman Ashauer
- Environment Department, University of York, Heslington, York, United Kingdom
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Bludau S, Bzdok D, Gruber O, Kohn N, Riedl V, Sorg C, Palomero-Gallagher N, Müller V, Hoffstaedter F, Amunts K, Eickhoff S. EP 81. Medial prefrontal aberrations in major depressive disorder revealed by Cytoarchitectonically informed Voxel-based Morphometry. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2016.05.130] [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: 10/21/2022]
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Schilbach L, Hoffstaedter F, Müller V, Cieslik E, Goya-Maldonado R, Trost S, Sorg C, Riedl V, Jardri R, Sommer I, Kogler L, Derntl B, Gruber O, Eickhoff S. Transdiagnostic commonalities and differences in resting state functional connectivity of the default mode network in schizophrenia and major depression. Neuroimage Clin 2015; 10:326-35. [PMID: 26904405 PMCID: PMC4724692 DOI: 10.1016/j.nicl.2015.11.021] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/26/2015] [Accepted: 11/29/2015] [Indexed: 01/10/2023]
Abstract
Schizophrenia and depression are prevalent psychiatric disorders, but their underlying neural bases remains poorly understood. Neuroimaging evidence has pointed towards the relevance of functional connectivity aberrations in default mode network (DMN) hubs, dorso-medial prefrontal cortex and precuneus, in both disorders, but commonalities and differences in resting state functional connectivity of those two regions across disorders has not been formally assessed. Here, we took a transdiagnostic approach to investigate resting state functional connectivity of those two regions in 75 patients with schizophrenia and 82 controls from 4 scanning sites and 102 patients with depression and 106 controls from 3 sites. Our results demonstrate common dysconnectivity patterns as indexed by a significant reduction of functional connectivity between precuneus and bilateral superior parietal lobe in schizophrenia and depression. Furthermore, our findings highlight diagnosis-specific connectivity reductions of the parietal operculum in schizophrenia relative to depression. In light of evidence that points towards the importance of the DMN for social cognitive abilities and well documented impairments of social interaction in both patient groups, it is conceivable that the observed transdiagnostic connectivity alterations may contribute to interpersonal difficulties, but this could not be assessed directly in our study as measures of social behavior were not available. Given the operculum's role in somatosensory integration, diagnosis-specific connectivity reductions may indicate a pathophysiological mechanism for basic self-disturbances that is characteristic of schizophrenia, but not depression.
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Affiliation(s)
- L. Schilbach
- Max-Planck Institute of Psychiatry, Munich, Germany
- Department of Psychiatry, University of Cologne, Cologne, Germany
| | - F. Hoffstaedter
- Institute of Neuroscience and Medicine (INM-1), Research Centre Jülich, Germany
- Institute of Clinical Neuroscience and Medical Psychology, Medical Faculty, Heinrich Heine University Düsseldorf, Germany
| | - V. Müller
- Institute of Neuroscience and Medicine (INM-1), Research Centre Jülich, Germany
- Institute of Clinical Neuroscience and Medical Psychology, Medical Faculty, Heinrich Heine University Düsseldorf, Germany
| | - E.C. Cieslik
- Institute of Neuroscience and Medicine (INM-1), Research Centre Jülich, Germany
- Institute of Clinical Neuroscience and Medical Psychology, Medical Faculty, Heinrich Heine University Düsseldorf, Germany
| | - R. Goya-Maldonado
- Center for Translational Research in Systems Neuroscience and Psychiatry, Clinic for Psychiatry and Psychotherapy, University Medical Center Göttingen, Germany
| | - S. Trost
- Center for Translational Research in Systems Neuroscience and Psychiatry, Clinic for Psychiatry and Psychotherapy, University Medical Center Göttingen, Germany
| | - C. Sorg
- Department of Psychiatry, Technical University Munich, Germany
| | - V. Riedl
- Department of Psychiatry, Technical University Munich, Germany
| | - R. Jardri
- Divison of Psychiatry, Centre Hospitalier Régional Universitaire de Lille, France
| | - I. Sommer
- UMC Utrecht Brain Center Rudolf Magnus, Utrecht, Netherlands
| | - L. Kogler
- Department of Psychiatry and Psychotherapy, University of Tübingen, Germany
| | - B. Derntl
- Department of Psychiatry and Psychotherapy, University of Tübingen, Germany
| | - O. Gruber
- Center for Translational Research in Systems Neuroscience and Psychiatry, Clinic for Psychiatry and Psychotherapy, University Medical Center Göttingen, Germany
| | - S.B. Eickhoff
- Institute of Neuroscience and Medicine (INM-1), Research Centre Jülich, Germany
- Institute of Clinical Neuroscience and Medical Psychology, Medical Faculty, Heinrich Heine University Düsseldorf, Germany
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Dovern A, Fink GR, Fromme ACB, Wohlschläger AM, Weiss-Blankenhorn PH, Riedl V. Increased Intrinsic Network Connectivity in Grapheme-Colour Synaesthesia. KLIN NEUROPHYSIOL 2012. [DOI: 10.1055/s-0032-1301590] [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: 10/28/2022]
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Myers N, Sorg C, Riedl V, Wohlschläger A. Resting-state Networks in Dementia. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1268266] [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: 10/18/2022]
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Riedl V, Valet M, Wohlschlaeger A, Toelle R. Retro- and Prospective Pain Encoded in the Resting Brain – an ICA approach. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0029-1246607] [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: 10/20/2022]
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Sorg C, Neufang S, Riedl V, Wohlschläger A. Compensatory recruitment and intrinsic brain organization in Alzheimer's disease. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)70488-4] [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: 10/20/2022] Open
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Plant C, Sorg C, Riedl V, Wohlschläger A. Reduced Regional Integration in the Default Network of Patients with Very Mild Alzheimer's Disease Detected by Bootstrapping Rest-fMRI Data. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)70266-6] [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: 11/24/2022] Open
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Riedl V. Default mode Network und Schmerz. KLIN NEUROPHYSIOL 2009. [DOI: 10.1055/s-0029-1216055] [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: 10/21/2022]
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Zettl R, Waydhas C, Biberthaler P, Lewan U, Riedl V, Duswald KH, Ruchholtz S. Nonsurgical treatment of a severe tracheal rupture after endotracheal intubation. Crit Care Med 1999; 27:661-3. [PMID: 10199549 DOI: 10.1097/00003246-199903000-00051] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [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: 12/25/2022]
Abstract
OBJECTIVE We report the case of an 82-yr-old woman with a large complete longitudinal tracheal rupture, following endotracheal intubation. The patient was treated nonoperatively with excellent outcome. The diagnostic and therapeutic course as well as other therapeutic options are discussed.
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Affiliation(s)
- R Zettl
- Department of Surgery, Ludwig-Maximilians-University, Munich, Germany
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Strassl H, Riedl V, Moser K. [Sports-related fractures of the facial skull in Austria]. Unfallchirurgie 1988; 14:308-10. [PMID: 3265229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Details of injuries to the maxillo-facial region have been collected over a five year period. 635 fractures in this region were registered resulting from 24 different sports. Soccer was found as the most dangerous individual sport. There is no absolute safe kind of sport but we suggest that the number of fractures depends too on a local factor.
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Affiliation(s)
- H Strassl
- Universitätsklinik für Kiefer- und Gesichtschirurgie, Wien
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Erhardt W, Seiler R, Riedl V, Aschenbrenner G, Blümel G. [Ultrashort hypnoanalgesia with alfentanyl and etomidate in the dog--circulatory and respiratory studies]. Berl Munch Tierarztl Wochenschr 1985; 98:413-7. [PMID: 3937516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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