28 results on '"Picone, M."'
Search Results
2. List of contributors
- Author
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Alagöz, Fatih, primary, Ali, Khitem Ben, additional, Amoretti, M., additional, Anpalagan, Alagan, additional, Arslan, Zemre, additional, Badis, Hakim, additional, Bahtiyar, Şerif, additional, Bisio, Igor, additional, Bocciarelli, Paolo, additional, Bouzouita, Meriam, additional, Canberk, Berk, additional, Carlà, Lorenzo, additional, Castro, Rodrigo, additional, Cherkaoui, Soumaya, additional, Chiti, Francesco, additional, Chuah, Teong Chee, additional, D’Ambrogio, Andrea, additional, Daneshtalab, Masoud, additional, Delucchi, Stefano, additional, Diallo, Ousmane, additional, Domènech, Josep, additional, El Bouabidi, Imen, additional, Erel, Muge, additional, Facchi, Nicolò, additional, Fantacci, Romano, additional, Fernandes, Diogo A.B., additional, Ferrari, G., additional, Freire, Mário M., additional, García, Daniel F., additional, Gil, José Antonio, additional, Granda, Juan C., additional, Gringoli, Francesco, additional, Guelzim, Tarik, additional, Gür, Gürkan, additional, Hadjadj-Aoul, Yassine, additional, Hamrioui, Sofiane, additional, Inácio, Pedro R.M., additional, Kakali, Vasiliki L., additional, Kamali, Maryam, additional, Kofman, Ernesto, additional, Kyriakopoulos, Constantine A., additional, Lalam, Mustapha, additional, Lavagetto, Fabio, additional, Lee, Ying Loong, additional, Lloret, Jaime, additional, Loo, Jonathan, additional, Lorenz, Pascal, additional, Loscri, Valeria, additional, Mansouri, Wahida, additional, Marchese, Mario, additional, Maskooki, Arash, additional, Mitton, Nathalie, additional, Mokdad, Lynda, additional, Monnet, Quentin, additional, Ndih, Eugene David Ngangue, additional, Neto, Miguel, additional, Nuño, Pelayo, additional, Obaidat, Mohammad S., additional, Ozcevik, Yusuf, additional, Papadimitriou, Georgios I., additional, Paris, Stefano, additional, Pecorella, Tommaso, additional, Peña-Ortiz, Raúl, additional, Petre, Luigia, additional, Picone, M., additional, Pont, Ana, additional, Portomauro, Giancarlo, additional, Rachedi, Abderrezak, additional, Rodrigues, Joel J.P.C., additional, Sabatino, Gabriele, additional, Sahuquillo, Julio, additional, Samaoui, Salima, additional, Selvamuthu, Dharmaraja, additional, Sene, Mbaye, additional, Sere, Kaisa, additional, Sharma, Nitin, additional, Soares, Liliana F.B., additional, Suárez, Francisco J., additional, Tabbane, Sami, additional, Trivedi, Kishor S., additional, Vaidyanathan, Kalyanaraman, additional, Varvarigos, Emmanouel (Manos), additional, Vegni, Anna Maria, additional, Viho, César, additional, Zangar, Nawel, additional, Zanichelli, F., additional, Zappatore, Sandro, additional, and Zarai, Faouzi, additional
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- 2015
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3. First evidence of the suitability of hair for assessing wildlife exposure to anticoagulant rodenticides (ARs).
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Picone M, Volpi Ghirardini A, Piazza R, and Bonato T
- Abstract
Anticoagulant rodenticides (ARs) are potent pesticides acting as vitamin K epoxide reductase inhibitors causing haemorrhaging or external bleeding from orifices and/or skin lesions in intoxicated rodents. However, their non-selective mode of action makes them particularly harmful for non-target wildlife, which may be exposed to ARs via ingestion of AR-containing baits (primary exposure), feeding on AR-intoxicated rodents and carrions (secondary exposure), consuming AR-contaminated necrophagous species (tertiary exposure), and exposure to surface waters receiving baited sewer systems and ARs from outdoor-placed traps after heavy rain events. In the present study, we assessed the suitability of hairs as a non-invasive matrix for monitoring the possible exposure of mammals to ARs with a focus on the first-generation anticoagulant rodenticides (FGARs) warfarin, coumatetralyl, and chlorophacinone and the second-generation anticoagulant rodenticides (SGARs) brodifacoum, bromadiolone, difenacoum, flocoumafen, and difethialone. The Red fox (n = 24) was selected as the species representing the potentially exposed non-target wildlife in a littoral area of Northern Italy along the Adriatic coast (Cavallino-Treporti municipality). Half (n = 12) of the analysed hair samples were positive for at least one of the targeted ARs, with a higher prevalence of SGARs (n = 11; 46%) compared to FGARs (n = 1; 4%). The most frequently quantified ARs were brodifacoum (25%), difethialone (13%), and flocoumafen (13%), with concentrations ranging from 0.08 ng g
-1 (difethialone) to 0.96 ng g-1 (brodifacoum). These data documented that a relevant part of the Red foxes living in the study area were exposed to ARs and, most importantly, provided the first evidence that hair residues can be used as a non-invasive matrix for assessing the possible exposure of mammals to ARs., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)- Published
- 2024
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4. An Integrated Testing Strategy (ITS) to assess the environmental compatibility of wood protection techniques.
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Picone M, Russo M, Marchetto D, Distefano GG, Baccichet M, Scalabrin E, Galvan T, Humar M, Lesar B, Guarneri I, Tagliapietra D, Capodaglio G, and Volpi Ghirardini A
- Subjects
- Animals, Water Pollutants, Chemical toxicity, Water Pollutants, Chemical analysis, Copper toxicity, Copper chemistry, Ethanolamine toxicity, Ethanolamine chemistry, Chlorophyta drug effects, Chlorophyta growth & development, Wood chemistry, Daphnia drug effects, Aliivibrio fischeri drug effects, Picea chemistry
- Abstract
To quantify the possible impact of different wood protection techniques on the aquatic environment, we applied a tiered Integrated Testing Strategy (ITS) on leachates obtained from untreated (UTW) Norway spruce (Picea abies), specimens treated with a copper-ethanolamine-based preservative solution, complying with the Use Class 3 (UC3), and specimens thermally modified (TM). Different maturation times in water were tested to verify whether toxicant leaching is time-dependent. Tier I tests, addressing acute effects on Aliivibrio fischeri, Raphidocelis subcapitata, and Daphnia magna, evidenced that TM toxicity was comparable or even lower than in UTW. Conversely, UC3 significantly affected all species compared to UTW, also after 30 days of maturation in water, and was not considered an environmentally acceptable wood preservation solution. Tier II (effects on early-life stages of Lymnea auricularia) and III (chronic effects on D. magna and L. auricularia) performed on UTW and TM confirmed the latter as an environmentally acceptable treatment, with increasing maturation times resulting in decreased adverse effects. The ITS allowed for rapid and reliable identification of potentially harmful effects due to preservation treatments, addressed the choice for a less impacting solution, and can be effective for manufacturers in identifying more environmentally friendly solutions while developing their products., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)
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- 2024
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5. Mercury and rare earth elements (REEs) show different spatial trends in feathers of Kentish plover (Charadrius alexandrinus) breeding along the Adriatic Sea coast, Italy.
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Picone M, Giurin A, Distefano GG, Corami F, Turetta C, Volpi Ghirardini A, Basso M, Panzarin L, Farioli A, Bacci M, Sebastanelli C, Morici F, Artese C, De Sanctis A, Galuppi M, Imperio S, and Serra L
- Subjects
- Animals, Italy, Female, Male, Feathers chemistry, Metals, Rare Earth analysis, Mercury analysis, Charadriiformes, Environmental Monitoring
- Abstract
Feather analysis is an ethical and effective method for assessing the exposure of wild birds to environmental contamination due to trace elements and organic pollutants. We used feather to monitor the exposure to three toxic and non-essential metals (Hg, Cd, and Pb) and rare earth elements (REEs) of Kentish plover (Charadrius alexandrinus) breeding in different coastal areas (Veneto, Emilia-Romagna, Marche, Abruzzo, and Apulia) along the Italian coast of the Adriatic Sea. Feathers (n = 113) were collected from April to June. Feather concentrations evidenced a significant exposure to Hg (13.05 ± 1.71 mg kg
-1 dw) and REEs (447.3 ± 52.8 ng g-1 dw) in the Kentish plover breeding in Veneto (n = 21) compared to the other coastal areas, with several individuals showing Hg concentrations above the adverse effect (5 mg kg-1 dw) and high-risk (9.14 mg kg-1 dw) thresholds reported for birds. Higher REE concentrations compared to Marche (n = 29), Abruzzo (n = 11) and Apulia (n = 13) were also reported for birds breeding in Emilia-Romagna (474.9 ± 41.9 ng g-1 dw; n = 29). The exposure to Cd and Pb was low in all the coastal areas, and only a few samples (n = 6 and n = 4 for Cd and Pb, respectively) exceeded the adverse effect thresholds (0.1 and 4 mg kg-1 for Cd and Pb, respectively). A significant sex-related difference was observed for REE-concentrations, with females showing higher concentration than males. These data highlight the need to monitor the exposure of the Kentish plover to Hg and REEs, especially in the northern basin of the Adriatic Sea, since these elements might negatively affect species' reproductive success and threaten its conservation., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)- Published
- 2024
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6. An overview on dispersion procedures and testing methods for the ecotoxicity testing of nanomaterials in the marine environment.
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Brunelli A, Cazzagon V, Faraggiana E, Bettiol C, Picone M, Marcomini A, and Badetti E
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- Oxides chemistry, Research Design, Ecotoxicology, Nanostructures toxicity, Nanostructures chemistry
- Abstract
Considerable efforts have been devoted to develop or adapt existing guidelines and protocols, to obtain robust and reproducible results from (eco)toxicological assays on engineered nanomaterials (NMs). However, while many studies investigated adverse effects of NMs on freshwater species, less attention was posed to the marine environment, a major sink for these contaminants. This review discusses the procedures used to assess the ecotoxicity of NMs in the marine environment, focusing on the use of protocols and methods for preparing NMs dispersions and on the NMs physicochemical characterization in exposure media. To this purpose, a critical analysis of the literature since 2010 was carried out, based on the publication of the first NMs dispersion protocols. Among the 89 selected studies, only <5 % followed a standardized dispersion protocol combined with NMs characterization in ecotoxicological media, while more than half used a non-standardized dispersion method but performed NMs characterization. In the remaining studies, only partial or no information on dispersion procedures or on physicochemical characterization was provided. This literature review also highlighted that metal oxides NMs were the most studied (42 %), but with an increasing interest in last years towards nanoplastics (14 %) and multicomponent nanomaterials (MCNMs, 7 %), in line with the growing attention on these emerging contaminants. For all these NMs, primary producers as algae and bacteria were the most studied groups of marine species, in addition to mollusca, while organisms at higher trophic levels were less represented, likely due to challenges in evaluating adverse effects on more complex organisms. Thus, despite the wide use of NMs in different applications, standard dispersion protocols are not often used for ecotoxicity testing with marine species. However, the efforts to characterize NMs in ecotoxicological media recognize the importance of following conditions that are as standardized as possible to support the ecological hazard assessment of NMs., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
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- 2024
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7. Long-term analysis of microseism during extreme weather events: Medicanes and common storms in the Mediterranean Sea.
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Borzì AM, Minio V, De Plaen R, Lecocq T, Cannavò F, Ciraolo G, D'Amico S, Re CL, Monaco C, Picone M, Scardino G, Scicchitano G, and Cannata A
- Abstract
In this work, we analyze 12 meteorological events that occurred in the Mediterranean Sea during the period November 2011-November 2021 from a seismic point of view. In particular, we consider 8 Medicanes and 4 more common storms. Each of these events, in spite of the marked differences between them, caused heavy rainfall, strong wind gusts and violent storm surge with significant wave heights usually >3 m. We deal with the relationships between these meteorological events and the features of microseism (the most continuous and widespread seismic signal on Earth) in terms of spectral content, space-time variation of the amplitude and source locations tracked employing two different methods (amplitude decay-based grid search and array techniques). By comparing the positions of the microseism sources with the areas of significant storm surges, we observe that the microseism locations align with the actual locations of the storm surges for 10 out of 12 events analyzed (two Medicanes present very low intensity in terms of meteorological parameters and the microseism amplitude does not show significant variations during these two events). We also perform two analyses that allowed us to obtain both the seismic signature of these events, by using a method that exploits the coherence of continuous seismic noise, and their strength from a seismic point of view, called Microseism Reduced Amplitude. In addition, by integrating the results obtained from these two methods, we are able to "seismically" distinguish Medicanes and common storms. Consequently, we demonstrate the possibility of creating a novel monitoring system for Mediterranean meteorological events by incorporating microseism information alongside with other commonly employed techniques for studying meteorological phenomena. The integration of microseism with the data provided by routinely used techniques in sea state monitoring (e.g., wave buoy and HF radar) has the potential to offer valuable insights into the examination of historical extreme weather events within the context of climate change., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
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- 2024
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8. Thalamic atrophy and dysconnectivity are associated with cognitive impairment in a multi-center, clinical routine, real-word study of people with relapsing-remitting multiple sclerosis.
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Zivadinov R, Bergsland N, Jakimovski D, Weinstock-Guttman B, Lorefice L, Schoonheim MM, Morrow SA, Ann Picone M, Pardo G, Zarif M, Gudesblatt M, Nicholas JA, Smith A, Hunter S, Newman S, AbdelRazek MA, Hoti I, Riolo J, Silva D, Fuchs TA, Dwyer MG, and Hb Benedict R
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- Humans, Female, Male, Adult, Middle Aged, Retrospective Studies, Longitudinal Studies, Multiple Sclerosis, Relapsing-Remitting pathology, Multiple Sclerosis, Relapsing-Remitting diagnostic imaging, Multiple Sclerosis, Relapsing-Remitting physiopathology, Multiple Sclerosis, Relapsing-Remitting complications, Thalamus pathology, Thalamus diagnostic imaging, Cognitive Dysfunction pathology, Cognitive Dysfunction physiopathology, Cognitive Dysfunction etiology, Cognitive Dysfunction diagnostic imaging, Atrophy pathology, Magnetic Resonance Imaging methods
- Abstract
Background: Prior research has established a link between thalamic pathology and cognitive impairment (CI) in people with multiple sclerosis (pwMS). However, the translation of these findings to pwMS in everyday clinical settings has been insufficient., Objective: To assess which global and/or thalamic imaging biomarkers can be used to identify pwMS at risk for CI and cognitive worsening (CW) in a real-world setting., Methods: This was an international, multi-center (11 centers), longitudinal, retrospective, real-word study of people with relapsing-remitting MS (pwRRMS). Brain MRI exams acquired at baseline and follow-up were collected. Cognitive status was evaluated using the Symbol Digit Modalities Test (SDMT). Thalamic volume (TV) measurement was performed on T2-FLAIR, as well as on T1-WI, when available. Thalamic dysconnectivity, T2-lesion volume (T2-LV), and volumes of gray matter (GM), whole brain (WB) and lateral ventricles (LVV) were also assessed., Results: 332 pwMS were followed for an average of 2.8 years. At baseline, T2-LV, LVV, TV and thalamic dysconnectivity on T2-FLAIR (p < 0.016), and WB, GM and TV volumes on T1-WI (p < 0.039) were significantly worse in 90 (27.1 %) CI vs. 242 (62.9 %) non-CI pwRRMS. Greater SDMT decline over the follow-up was associated with lower baseline TV on T2-FLAIR (standardized β = 0.203, p = 0.002) and greater thalamic dysconnectivity (standardized β = -0.14, p = 0.028) in a linear regression model., Conclusions: PwRRMS with thalamic atrophy and worse thalamic dysconnectivity present more frequently with CI and experience greater CW over mid-term follow-up in a real-world setting., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Robert Zivadinov has received personal compensation from Bristol Myers Squibb, EMD Serono, Sanofi, Janssen, Protembis, Filterlex and Novartis for speaking and consultant fees. He received financial support for research activities from Novartis, Bristol Myers Squibb, Octave, Mapi Pharma, Protembis, CorEvitas and V-WAVE Medical. Niels Bergsland and Dejan Jakimovski have nothing to disclose. Myassar Zarif, Samuel Hunter, Stephen Newman, Tom Fuchs and Mary Ann Picone have not declared any conflict of interest. Bianca Weinstock-Guttman received honoraria as a speaker and/or as a consultant for Biogen Idec, Sanofi &Genzyme, Genentech, Novartis, BMS, Bayer, Horizon and Janssen. Dr Weinstock-Guttman received research funds from Biogen Idec, Genentech and Novartis. Lorena Lorefice received honoraria for consultancy and speaking from Biogen, Novartis, Sanofi, Genzyme, Merck and Bristol Myers Squibb. Menno Schoonheim: Serves on the editorial board of Neurology and Frontiers in Neurology, receives research support from the Dutch MS Research Foundation, Eurostars-EUREKA, ARSEP, Amsterdam Neuroscience, MAGNIMS and ZonMW (Vidi grant, project number 09150172010056) and has served as a consultant for or received research support from Atara Biotherapeutics, Biogen, Celgene/Bristol Meyers Squibb, EIP, Sanofi, MedDay and Merck. Sarah A. Morrow, in the last 3 years, has served as an advisory board member or received consulting fees from Biogen Idec; BMS/Celgene; EMDSerono; Novartis; Roche; Sanofi. She has participated in a speaker’s bureau for Biogen Idec; BMS/Celgene; EMDSerono; Novartis; Roche; Sanofi. She has received research support from Biogen Idec; EMDSerono, Novartis, Roche; Sanofi Genzyme. She has participated as a site investigator in clinical trials sponsored by Bristol Myers Squibb/Celgene; EMDSerono; Novartis; Roche; Sanofi. Gabriel Pardo received grants (to the institution) from Biogen, EMD Serono, Roche/Genentech, Sanofi Genzyme, Novartis, Abbvie, and BMS; consultant and/or speaker bureau for Biogen, EMD Serono, Roche/Genentech, Sanofi Genzyme, Novartis, Janssen, BMS, TG Therapeutics, PRIME Education, and MSAA. Mark Gudesblatt received honoraria from Biogen and Genentech. Jacqueline Nicholas received research grants from Biogen, Novartis, PCORI, Genentech, University of Buffalo, EMD Serono; Consulting for EMD Serono, Genentech, Greenwich Biosciences, Novartis, TG Therapeutics and Sanofi; Speaking honoraria for BMS, EMD Serono, Horizon, TG Therapeutics. Andrew Smith received honorariums from EMD Serono and Sanofi Genzyme for speaking bureau and combination for Genzyme for an advisory board. Mahmoud A. AbdelRazek received consultant fees from Bristol Myers Squibb. Wachy Vongchucherd, Jon Riolo and Diego Silva are employees of Bristol Myers Squibb. Michael G. Dwyer has received personal compensation from Bristol Myers Squibb and Filterlex for consultant fees. He received financial support for research activities from Novartis, Bristol Myers Squibb, Octave, Mapi Pharma, Protembis, CorEvitas and V-WAVE Medical. Ralph HB. Benedict has received consultation or speaking fees from Bristol Myer Squibb, Biogen, Merck, EMD Serono, Roche, Immune Therapeutics, Novartis, and Sanofi-Genzyme., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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9. Corrigendum to "Impacts of exhaust gas cleaning systems (EGCS) discharge waters on planktonic biological indicators".
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Picone M, Russo M, Distefano GG, Baccichet M, Marchetto D, Volpi Ghirardini A, Lunde Hermansson A, Petrovic M, Gros M, Garcia E, Giubilato E, Calgaro L, Magnusson K, Granberg M, and Marcomini A
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- 2023
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10. Neonicotinoids and pharmaceuticals in hair of the Red fox (Vulpes vulpes) from the Cavallino-Treporti peninsula, Italy.
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Picone M, Distefano GG, Zangrando R, Gambaro A, and Volpi Ghirardini A
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- Humans, Animals, Foxes, Sertraline, Ibuprofen, Neonicotinoids toxicity, Antidepressive Agents, Italy, Anti-Inflammatory Agents, Non-Steroidal, Hair, Pharmaceutical Preparations, Insecticides, Ketoprofen
- Abstract
Neonicotinoids (NEOs) and active pharmaceuticals ingredients (API) are contaminants widely diffused worldwide, causing increasing concern for potential adverse effects on wildlife. However, research on these contaminants have focused on target and non-target invertebrates, while information on potential effects in terrestrial mammals is lacking. We performed preliminary non-invasive monitoring of NEOs and API in a suburban and agricultural area using hair of the Red fox. The Red fox is a widely diffused mesopredator in Europe, and its plasticity in feeding habits makes it an excellent indicator for assessing exposure to environmental contamination. We observed the presence of NEOs in many Red fox hair samples (n = 11), including imidacloprid (IMI), acetamiprid (ACE), and clothianidin (CLO). The highest quantified concentrations were 6.4 ng g
-1 dry weight (dw), 6.7 ng g-1 dw, and 0.9 ng g-1 dw for IMI, ACE, and CLO, respectively. The targeted APIs included non-steroidal anti-inflammatory drugs (NSAIDs) and antidepressants. APIs were less frequently detected than NEOs, and the compounds with the highest prevalence were the NSAID ketoprofen (36%), the antidepressant sertraline (36%), and its active metabolite norsertraline (27%). The presence of human pharmaceuticals such as the NSAID ibuprofen and the antidepressants sertraline, fluoxetine, and their active metabolites norsertraline and norfluoxetine suggest environmental contamination due to untreated and partially treated wastewater discharged in surface waters and soils of the study area. The detection and quantification of ketoprofen and flunixin also suggest the possible use of contaminated manure on farmland. Findings indicate that hair may be used for monitoring environmental exposure to NEOs and provide evidence that hair is a good marker of exposure for antidepressants and certain NSAIDs, including ibuprofen, ketoprofen, and flunixin., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Inc. All rights reserved.)- Published
- 2023
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11. Impacts of exhaust gas cleaning systems (EGCS) discharge waters on planktonic biological indicators.
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Picone M, Russo M, Distefano GG, Baccichet M, Marchetto D, Volpi Ghirardini A, Lunde Hermansson A, Petrovic M, Gros M, Garcia E, Giubilato E, Calgaro L, Magnusson K, Granberg M, and Marcomini A
- Subjects
- Animals, Plankton, Environmental Biomarkers, Water, Diatoms, Mytilus, Water Pollutants, Chemical toxicity, Water Pollutants, Chemical analysis, Copepoda
- Abstract
Exhaust Gas Cleaning Systems (EGCS), operating in open-loop mode, continuously release acidic effluents (scrubber waters) to marine waters. Furthermore, scrubber waters contain high concentrations of metals, polycyclic aromatic hydrocarbons (PAHs), and alkylated PAHs, potentially affecting the plankton in the receiving waters. Toxicity tests evidenced significant impairments in planktonic indicators after acute, early-life stage, and long-term exposures to scrubber water produced by a vessel operating with high sulphur fuel. Acute effects on bacterial bioluminescence (Aliivibrio fischeri), algal growth (Phaeodactylum tricornutum, Dunaliella tertiolecta), and copepod survival (Acartia tonsa) were evident at 10 % and 20 % scrubber water, while larval development in mussels (Mytilus galloprovincialis) showed a 50 % reduction at ∼5 % scrubber water. Conversely, larval development and reproductive success of A. tonsa were severely affected at scrubber water concentrations ≤1.1 %, indicating the risk of severe impacts on copepod populations which in turn may result in impairment of the whole food web., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Marco Picone reports financial support was provided by European Union., (Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)
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- 2023
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12. Long-term effects of neonicotinoids on reproduction and offspring development in the copepod Acartia tonsa.
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Picone M, Distefano GG, Marchetto D, Russo M, Baccichet M, Brusò L, Zangrando R, Gambaro A, and Volpi Ghirardini A
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- Animals, Ecosystem, Neonicotinoids toxicity, Reproduction, Larva, Copepoda, Insecticides toxicity, Insecticides analysis, Pesticides
- Abstract
Neonicotinoids (NEOs) are neurotoxic pesticides acting as nicotinic acetylcholine receptor agonists. NEOs' efficacy against pest insects has favoured their spreading use in agriculture, but their proven effectiveness against non-target insects in terrestrial and aquatic ecosystems also raised concern over their environmental impact. Crustaceans were often studied for the impacts of NEOs due to their economic values and nervous' system similarity with insects. However, most studies on crustaceans focused on acute effects or exposure of early-life stages, while long-term effects were seldom explored. The present study aimed to assess the potential long-term effects of four commercially available NEOs on the reproduction and offspring of the calanoid copepod Acartia tonsa, a key species in the food webs of several coastal and estuarine environments. NEOs were confirmed as potent interferents of copepod reproduction. The first-generation compound acetamiprid significantly inhibited egg production and hatching ratio at 10 ng L
-1 , while larval survival and development were affected at 81 ng L-1 . Similarly, the first-generation compound thiacloprid significantly inhibited the hatching ratio and larval development at 9 ng L-1 , while it did not affect egg production and larval survival. Second-generation compounds were less toxic than acetamiprid and thiacloprid: clothianidin affected significantly only larval development of the offspring at 62 ng L-1 , while thiamethoxam was not toxic at both the tested concentrations (8 ng L-1 and 84 ng L-1 ). These data evidenced that effects on copepods may occur at concentrations below the chronic aquatic life benchmarks reported by USEPA for acetamiprid (2100 ng L-1 ) and thiacloprid (970 ng L-1 ), suggesting that long-term effects of NEOs have been underestimated. A comparison with environmental concentrations evidenced that NEO-mediated effects on copepods are more liable in coastal areas receiving discharge from wastewater treatment plants or diffuse inputs from agricultural land during pesticide application periods., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier Ltd. All rights reserved.)- Published
- 2022
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13. Assessing the exposure to human and veterinary pharmaceuticals in waterbirds: The use of feathers for monitoring antidepressants and nonsteroidal anti-inflammatory drugs.
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Distefano GG, Zangrando R, Basso M, Panzarin L, Gambaro A, Volpi Ghirardini A, and Picone M
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- Animals, Anti-Inflammatory Agents, Non-Steroidal, Antidepressive Agents, Ecosystem, Humans, Selective Serotonin Reuptake Inhibitors, Feathers, Veterinary Drugs
- Abstract
Exposure to active pharmaceutical ingredients (APIs) from both human and veterinary sources is an increasing threat to wildlife welfare and conservation. Notwithstanding, tracking the exposure to pharmaceuticals in non-target and sensitive vertebrates, including birds, is seldom performed and relies almost exclusively on analysing internal organs retrieved from carcasses or from experimentally exposed and sacrificed birds. Clearly, this excludes the possibility of performing large-scale monitoring. Analysing feathers collected from healthy birds may permit this, by detecting APIs in wild birds, including protected and declining species of waterbirds, without affecting their welfare. To this end, we set up a non-destructive method for analysing the presence of non-steroidal anti-inflammatory drugs (NSAIDs), selective serotonin reuptake inhibitors (SSRIs) and noradrenaline reuptake inhibitors (SNRIs) in the feathers of fledglings of both the Mediterranean gull (Ichtyaetus melanocephalus) and the Sandwich tern (Thalasseus sandvicensis). The presence of several NSAIDs and SSRIs above the method quantification limits have confirmed that feathers might be a suitable means of evaluating the exposure of birds to APIs. Moreover, the concentrations indicated that waterbirds are exposed to NSAIDs, such as diclofenac, ibuprofen and naproxen, and SSRIs, such as citalopram, desmethylcitalopram, fluvoxamine and sertraline, possibly due to their widespread use and incomplete removal in wastewater treatment plants (WWTPs). The active ingredient diclofenac raises a the primary concern for the ecosystem and the welfare of the waterbirds, due to its high prevalence (100% and 83.3% in Mediterranean gull and Sandwich tern, respectively), its concentrations detected in feathers (11.9 ng g
-1 and 6.7 ng g-1 in Mediterranean gull and Sandwich tern, respectively), and its documented toxicity toward certain birds., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier B.V. All rights reserved.)- Published
- 2022
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14. The ubiquity of neonicotinoid contamination: Residues in seabirds with different trophic habits.
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Distefano GG, Zangrando R, Basso M, Panzarin L, Gambaro A, Volpi Ghirardini A, and Picone M
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- Animals, Habits, Neonicotinoids, Nitro Compounds, Thiamethoxam, Ecosystem, Insecticides analysis
- Abstract
Neonicotinoids are one of the most diffusely used classes of pesticides whose level of danger toward non-target invertebrate and vertebrate species has raised increasing concern in the last decades. Among vertebrates, birds are particularly susceptible to unintentional neonicotinoid poisoning since they can be exposed through different pathways, including ingestion of dressed seeds, sucking of contaminated pollen, ingestion of sprayed insects, predation on contaminated aquatic and terrestrial preys. In the present study, we investigated the possible exposure of seabirds by measuring the residues of five neonicotinoids (acetamiprid, clothianidin, imidacloprid, thiacloprid and thiamethoxam) in samples of pooled feathers collected from fledglings of the strictly piscivorous Sandwich tern (Thalasseus sandvicensis) and the mixotrophic species Mediterranean gull (Ichthyaetus melanocephalus). At least one neonicotinoid was quantified in all the Mediterranean gull samples (n = 11) and 89% of the analysed Sandwich tern samples (n = 36). The active principles with the highest quantification rates were imidacloprid (100% in Mediterranean gulls and 58% in Sandwich terns) and clothianidin (100% in Mediterranean gulls and 61% in Sandwich terns), while thiacloprid was the less frequently detected pesticide (<20% of samples in both species). Mean concentrations ± standard error for imidacloprid, clothianidin and thiamethoxam were 8.8 ± 1.4, 4.5 ± 0.19 and 0.16 ± 0.02 ng g
-1 for the Mediterranean gull, and 5.8 ± 0.55, 0.60 ± 0.08 and 0.36 ± 0.03 ng g-1 for the Sandwich tern, respectively. Our data evidenced the exposure of seabirds to neonicotinoids and the further need to investigate the extent of neonicotinoid contamination in non-agricultural ecosystems., (Copyright © 2021 Elsevier Inc. All rights reserved.)- Published
- 2022
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15. Occurrence of rare earth elements in fledgelings of Thalasseus sandvicensis.
- Author
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Picone M, Distefano GG, Corami F, Franzoi P, Redolfi Bristol S, Basso M, Panzarin L, and Volpi Ghirardini A
- Subjects
- Animals, Ecosystem, Feathers chemistry, Mining, Charadriiformes, Metals, Rare Earth analysis
- Abstract
Rare Earth Elements (REEs) are increasingly exploited for crucial new technologies, and their massive use in the past decades has significantly increased their environmental concentrations. Although their effects have been extensively studied in vitro and in vivo in model species, little is known of their accumulation and potential toxic effects in wildlife, including waterbirds. In the present work, we measured the concentrations of REEs in feathers of young Sandwich tern (Thalasseus sandvicensis) about 16-20 days old to assess whether the accumulation of these elements may be a concern in Venice's Lagoon, one of the most important wetlands of the Mediterranean area for breeding and migrating birds. The REE concentrations detected in the Sandwich tern were the highest among those reported in the literature for bird's feathers (940.9 ± 223.0 ng g
-1 ), although in the study area industrial activities related to REEs mining, processing and disposal are absent. In particular, Lanthanum (La) was more abundant in the feathers than other REEs and accounted for 73-97% of total REEs detected. Analysis of bird's food indicated that diet is a relevant route of exposure to REEs for young terns; however, concentration in fishes are relevantly higher than in the feathers for all REEs other than La. The study evidenced the need to collect more information concerning the occurrence of REEs both in the abiotic matrices (i.e. water and sediments) and in living organisms of different trophic levels to improve the general knowledge concerning the fate of REEs in the aquatic ecosystems., (Copyright © 2021 Elsevier Inc. All rights reserved.)- Published
- 2022
- Full Text
- View/download PDF
16. Benefit of Deep Inspiratory Breath Hold for Right Breast Cancer When Regional Lymph Nodes Are Irradiated.
- Author
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Peters GW, Gao SJ, Knowlton C, Zhang A, Evans SB, Higgins S, Wilson LD, Saltmarsh N, Picone M, and Moran MS
- Subjects
- Breath Holding, Female, Heart, Humans, Lymph Nodes, Organs at Risk, Radiotherapy Dosage, Radiotherapy Planning, Computer-Assisted, Breast Neoplasms radiotherapy, Unilateral Breast Neoplasms radiotherapy
- Abstract
Background: Although deep inspiratory breath-hold (DIBH) is routinely used for left-sided breast cancers, its benefits for right-sided breast cancer (rBC) have yet to be established. We compared free-breathing (FB) and DIBH treatment plans for a cohort of rBC undergoing regional nodal irradiation (RNI) to determine its potential benefits., Methods and Materials: rBC patients considered for RNI (internal mammary nodal chains, supraclavicular field, with or without axilla) from October 2017 to May 2020 were included in this analysis. For each patient, FB versus DIBH plans were generated and dose volume histograms evaluated the following parameters: mean lung dose, ipsilateral lung V
20 /V5 (volumes of lung receiving 20 Gy and 5 Gy, respectively); mean heart dose and heart V5 (volumes of heart receiving 5 Gy); liver V20 absolute /V30 absolute (absolute volume of liver receiving 20 Gy and 30 Gy, respectively), liver Dmax , and total liver volume irradiated (TVIliver ). The dosimetric parameters were compared using Wilcoxon signed-rank testing., Results: Fifty-four patients were eligible for analysis, comparing 108 FB and DIBH plans. DIBH significantly decreased all lung and liver parameters: mean lung dose (19.7 Gy-16.2 Gy, P < .001), lung V20 (40.7%-31.7%, P < .001), lung V5 (61.2%-54.5%, P < .001), TVIliver (1446 cc vs 1264 cc; P = .006) liver Dmax (50.2 Gy vs 48.9 Gy; P = .023), liver V20 (78.8-23.9 cc, P < .001), and liver V30 (58.1-14.6 cc, P < .001) compared with FB. DIBH use did not significantly improve heart parameters, although the V5Heart trended on significance (1.25-0.6, P = .067)., Conclusions: This is the largest cohort to date analyzing DIBH for RNI-rBC. Our findings demonstrate significant improvement in all lung and liver parameters with DIBH, supporting its routine consideration for rBC patients undergoing comprehensive RNI., (Copyright © 2021. Published by Elsevier Inc.)- Published
- 2022
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17. Fragrance materials (FMs) affect the larval development of the copepod Acartia tonsa: An emerging issue for marine ecosystems.
- Author
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Picone M, Distefano GG, Marchetto D, Russo M, Vecchiato M, Gambaro A, Barbante C, and Ghirardini AV
- Subjects
- Animals, Copepoda drug effects, Ecosystem, Odorants, Copepoda physiology, Perfume toxicity, Water Pollutants, Chemical toxicity
- Abstract
Fragrance materials (FMs) are used in a variety of detergents and cosmetics, including household and personal care products. Despite their widespread use and the growing evidence of their occurrence in surface waters worldwide, very little is known about their toxicity towards marine species, including a key component of the marine food webs such as copepods. Thus, we investigated the toxicity of six of the more long-lasting and stable commercial fragrances, including Amyl Salicylate (AMY), Oranger Crystals (ORA), Hexyl Salicylate (HEX), Ambrofix (AMB), Peonile (PEO), and Benzyl Salicylate (BZS), to assess their ability to impair the larval development of the calanoid copepod Acartia tonsa. FMs inhibited the development of A. tonsa significantly at concentrations by far lower than the effect-concentrations reported in the literature for aquatic species. The more toxic FMs were HEX (EC
50 = 57 ng L-1 ), AMY (EC50 = 131 ng L-1 ) and ORA (EC50 = 766 ng L-1 ), while the other three compounds exerted toxic effects at concentrations higher than 1000 ng L-1 (LOEC at 1000 ng L-1 for PEO and BZS, and at 10,000 ng L-1 for AMB). Early life-stage mortality was unaffected by FMs at all the tested concentrations. A comparison with water concentrations of FMs reported in the literature confirmed that FMs, especially HEX and AMY, may act as contaminants of potential concern in many aquatic habitats, including urban areas and remote and polar environments., (Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.)- Published
- 2021
- Full Text
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18. Evidence of small microplastics (<100 μm) ingestion by Pacific oysters (Crassostrea gigas): A novel method of extraction, purification, and analysis using Micro-FTIR.
- Author
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Corami F, Rosso B, Roman M, Picone M, Gambaro A, and Barbante C
- Subjects
- Animals, Microplastics, Plastics, Spectroscopy, Fourier Transform Infrared, Crassostrea, Water Pollutants, Chemical analysis
- Abstract
Microplastics (MPs) are present in fresh, brackish, or marine waters. Micro- and macroinvertebrates can mistake MPs or small microplastics (SMPs, <100 μm) to be food particles and easily ingest them according to the size of their mouthparts. SMPs may then block the passage of food through the intestinal tract (i.e. hepatopancreas), accumulate within the organism, and enter the food web. Pacific oysters (Crassostrea gigas) are allochthonous filter-feeding bivalve mollusks, which have been introduced in coastal seas around the world in both natural banks and farms. Considering their economic and ecological value, these bivalves have been chosen as a model to study the ingestion of SMPs. A novel method for the extraction and purification of SMPs in bivalves was developed. Quantification and simultaneous polymer identification of SMPs using Micro-FTIR (Fourier Transform Infrared Spectroscopy) were performed, with a limit of detection for the particle size of 5 μm., (Copyright © 2020 Elsevier Ltd. All rights reserved.)
- Published
- 2020
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19. Accumulation of trace elements in feathers of the Kentish plover Charadrius alexandrinus.
- Author
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Picone M, Corami F, Gaetan C, Basso M, Battiston A, Panzarin L, and Volpi Ghirardini A
- Subjects
- Animals, Female, Male, Sex Factors, Arsenic analysis, Charadriiformes metabolism, Environmental Monitoring methods, Environmental Pollutants analysis, Feathers chemistry, Mercury analysis, Trace Elements analysis
- Abstract
A non-invasive study of trace element accumulation in tail feathers of the Kentish plover (Charadrius alexandrinus) was performed along the coastline of the northern littoral strip of the Venice Lagoon, with the aim to verify whether contamination may be a factor affecting conservation status of Kentish plover populations. Body burdens in feathers of 11 trace elements including toxic metals/metalloids and essential elements (As, Cd, Co, Cr, Cu, Hg, Ni, Pb, Se, V, Zn) were quantified by ICP-MS, then concentrations were normalized to feather's age calculated using ptilochronology in order to obtain daily deposition rates. Mercury emerged as a major threat to the conservation of the species, since average feather concentration was clearly above the adverse-effect threshold associated with impairment in the reproductive success in a number of bird species. Also Cd and Se occurred at levels that may impact on the conservation status of the studied species at local scale, even if to a lesser extent than Hg. Gender-related differences in trace element accumulation emerged only for As, although for this element the risks associated to environmental exposure seem to be negligible., (Copyright © 2019 Elsevier Inc. All rights reserved.)
- Published
- 2019
- Full Text
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20. Is derelict fishing gear impacting the biodiversity of the Northern Adriatic Sea? An answer from unique biogenic reefs.
- Author
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Moschino V, Riccato F, Fiorin R, Nesto N, Picone M, Boldrin A, and Da Ros L
- Subjects
- Animals, Italy, Oceans and Seas, Biodiversity, Fisheries, Fishes, Food Supply instrumentation, Invertebrates
- Published
- 2019
- Full Text
- View/download PDF
21. Testing lagoonal sediments with early life stages of the copepod Acartia tonsa (Dana): An approach to assess sediment toxicity in the Venice Lagoon.
- Author
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Picone M, Bergamin M, Delaney E, Ghirardini AV, and Kusk KO
- Subjects
- Animals, Biological Assay, Copepoda growth & development, Italy, Larva drug effects, Seawater chemistry, Copepoda drug effects, Environmental Monitoring methods, Geologic Sediments chemistry, Water Pollutants, Chemical toxicity
- Abstract
The early-life stages of development of the calanoid copepod Acartia tonsa from egg to copepodite I is proposed as an endpoint for assessing sediment toxicity by exposing newly released eggs directly onto the sediment-water interface. A preliminary study of 5 sediment samples collected in the lagoon of Venice highlighted that the larval development rate (LDR) and the early-life stages (ELS) mortality endpoints with A. tonsa are more sensitive than the standard amphipod mortality test; moreover LDR resulted in a more reliable endpoint than ELS mortality, due to the interference of the sediment with the recovery of unhatched eggs and dead larvae. The LDR data collected in a definitive study of 48 sediment samples from the Venice Lagoon has been analysed together with the preliminary data to evaluate the statistical performances of the bioassay (among replicate variance and minimum significant difference between samples and control) and to investigate the possible correlation with sediment chemistry and physical properties. The results showed that statistical performances of the LDR test with A. tonsa correspond with the outcomes of other tests applied to the sediment-water interface (Strongylocentrotus purpuratus embryotoxicity test), sediments (Neanthes arenaceodentata survival and growth test) and porewater (S. purpuratus); the LDR endpoint did, however, show a slightly higher variance as compared with other tests used in the Lagoon of Venice, such as 10-d amphipod lethality test and larval development with sea urchin and bivalves embryos. Sediment toxicity data highlighted the high sensitivity and the clear ability of the larval development to discriminate among sediments characterized by different levels of contamination. The data of the definitive study evidenced that inhibition of the larval development was not affected by grain-size and the organic carbon content of the sediment; in contrast, a strong correlation between inhibition of the larval development and the sediment concentrations of some metals (Cu, Hg, Pb, Zn), acid-volatile sulphides (AVS), polychlorinated biphenyls (PCBs) and polynuclear aromatic hydrocarbons (PAHs) was found. No correlation was found with DDTs, hexachlorobenzene and organotin compounds., (Copyright © 2017 Elsevier Inc. All rights reserved.)
- Published
- 2018
- Full Text
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22. Assessment of sediment toxicity in the Lagoon of Venice (Italy) using a multi-species set of bioassays.
- Author
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Picone M, Bergamin M, Losso C, Delaney E, Arizzi Novelli A, and Ghirardini AV
- Subjects
- Animals, Chemical Phenomena, Crassostrea drug effects, Environmental Monitoring, Fertilization, Hexachlorobenzene toxicity, Inhibitory Concentration 50, Italy, Metals, Heavy toxicity, Multivariate Analysis, Polychlorinated Biphenyls toxicity, Polycyclic Aromatic Hydrocarbons toxicity, Reproducibility of Results, Toxicity Tests, Amphipoda drug effects, Biological Assay methods, Geologic Sediments chemistry, Paracentrotus drug effects, Water Pollutants, Chemical toxicity
- Abstract
Within the framework of a Weight of Evidence (WoE) approach, a set of four toxicity bioassays involving the amphipod Corophium volutator (10 d lethality test on whole sediment), the sea urchin Paracentrotus lividus (fertilization and embryo toxicity tests on elutriate) and the pacific oyster Crassostrea gigas (embryo toxicity test on elutriate) was applied to sediments from 10 sampling sites of the Venice Lagoon (Italy). Sediments were collected during three campaigns carried out in May 2004 (spring campaign), October 2004 (autumn campaign) and February 2005 (winter campaign). Toxicity tests were performed on all sediment samples. Sediment grain-size and chemistry were measured during spring and autumn campaigns. This research investigated (i) the ability of toxicity tests in discriminating among sites with different contamination level, (ii) the occurrence of a gradient of effect among sampling sites, (iii) the possible correlation among toxicity tests, sediment chemistry, grain size and organic carbon, and (iv) the possible occurrence of toxicity seasonal variability. Sediment contamination levels were from low to moderate. No acute toxicity toward amphipods was observed, while sea urchin fertilization was affected only in few sites in just a single campaign. Short-term effects on larval development of sea urchin and oyster evidenced a clear spatial trend among sites, with increasing effects along the axis connecting the sea-inlets with the industrial area. The set of bioassays allowed the identification of a spatial gradient of effect, with decreasing toxicity from the industrial area toward the sea-inlets. Multivariate data analysis showed that the malformations of oyster embryos were significantly correlated to the industrial contamination (metals, polynuclear aromatic hydrocarbons, hexachlorobenzene and polychlorinated biphenyls), while sea urchin development to sediment concentrations of As, Cr and organic carbon. Both embryo toxicity tests were significantly affected by high ammonia concentrations found in the elutriates extracted from some mudflat and industrial sediments. No significant temporal variation of the toxicity was observed within the experimental period. Amendments to the set of bioassays, with inclusion of chronic tests, can certainly provide more reliability and consistency to the characterization of the (possible) toxic effects., (Copyright © 2015 Elsevier Inc. All rights reserved.)
- Published
- 2016
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23. Acute exacerbation of hereditary coproporphyria mimics early surgical infection following intrathecal pump implantation for chronic abdominal pain: A case report.
- Author
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Zhou L, Villanueva J, Desai MJ, and Picone M
- Abstract
Objective: Pain physicians should also be aware of rare complications that can occur after intrathecal pump (ITP) placement. One such rare complication includes an acute exacerbation of hereditary coproporphyria (HCP)., Methods: We present a case report that illustrates how an acute exacerbation of HCP can mimic an early surgical post-procedure infection after ITP implantation., Results: The patient's rapid onset of symptoms two hours after the procedure keyed into HCP as the underlying cause, as acute wound infections rarely occur in the several hours following surgery. After symptomatic treatment of her HCP acute exacerbation, the patient clinically improved without the development of further symptoms or adverse sequelae. She reported considerable pain relief with the implanted drug delivery system., Conclusion: In a setting with multiple confounders, a methodical history and physical examination, close monitoring, and a comprehensive understanding of potential complications can prevent unnecessary ITP extraction and streamline the delivery of appropriate care., (© 2010 International Neuromodulation Society.)
- Published
- 2010
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24. Sequential toxicity identification evaluation (TIE) for characterizing toxicity of Venice Lagoon sediments: comparison of two different approaches.
- Author
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Picone M, Bergamin M, Volpato E, Delaney E, Turetta C, Ranaldo M, Capodaglio G, and Nasci C
- Subjects
- Animals, Bivalvia embryology, Cities, Geologic Sediments chemistry, Italy, Male, Paracentrotus, Seawater, Spermatozoa cytology, Spermatozoa metabolism, Time Factors, Ammonia analysis, Ammonia toxicity, Bivalvia drug effects, Geologic Sediments analysis, Metals analysis, Metals toxicity, Spermatozoa drug effects, Toxicity Tests methods, Water Pollutants, Chemical analysis, Water Pollutants, Chemical toxicity
- Abstract
A toxicity identification evaluation phase-I (TIE-1) procedure was carried out on five pore water samples extracted from sediments of the Venice Lagoon previously investigated to assess both chemical contamination and toxic effects on the biota. Two different sequential TIE procedures were tested. A first sequence (TIE-1) provided for adding Na2S2O3, adding Na-EDTA, filtering, elution through a C18-SPE column and removing ammonia using the macroalgae Ulva rigida Agardh 1823, while a second procedure (TIE-2) was set up using U. rigida treatment for ammonia removal as first step, keeping unchanged the sequence of the other manipulations. Two different exposure time to the macroalgae were tested (3-h and 15-h). Sperm-cell toxicity test with the echinoid Paracentrotus lividus and embryotoxicity tests with the bivalves Mytilus galloprovincialis and Crassostrea gigas were performed on pore-water samples to assess the effect of the sequential treatments on the overall toxicity. The results confirmed that ammonia contribution to toxicity is strong in most of the samples and that metals, specially Cu, are of concern at least in three sites. The TIE-2 procedure provided more reliable results for the samples characterized by high ammonia contribution to the overall toxicity, whereas the results of TIE-1 and TIE-2 were equivalent for the samples where ammonia contribution was not prevailing. Chemical analyses and test results showed that a 3-h U. rigida exposure is suitable to remove ammonia toxicity minimizing potential metal up-take.
- Published
- 2009
- Full Text
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25. Evaluation of Corophium orientale as bioindicator for Venice Lagoon: sensitivity assessment and toxicity-score proposal.
- Author
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Picone M, Bergamin M, Novelli Alessandra A, Noventa S, Delaney E, Barbanti A, and Ghirardini AV
- Subjects
- Ammonia toxicity, Animals, Italy, Lethal Dose 50, Metals, Heavy analysis, Metals, Heavy toxicity, No-Observed-Adverse-Effect Level, Sodium Dodecyl Sulfate toxicity, Amphipoda drug effects, Environmental Monitoring methods, Geologic Sediments, Water Pollutants, Chemical toxicity
- Abstract
The 96-h water-only exposure and 10-d sediment toxicity tests with the amphipod Corophium orientale were performed in order to enhance the knowledge about its overall sensitivity and its applicability to Venice Lagoon sediments. The values obtained with cadmium as reference toxicant demonstrated a certain variability of the LC(50); the higher value was found in spring and the lower in late summer. Tests with other pure chemicals (Ni, Total Ammonia, Sodium Dodecyl-Sulphate) showed good discriminatory power; the toxicity gradient observed was: Cd (LC(50) of 3.3 mg/L)>SDS (LC(50) of 8.7 mg/L)>total ammonia (LC(50) of 126mg/L)>Ni (LC(50) of 352 mg/L). Sediment toxicity test results were used to obtain information on non-treatment factors (grain-size, TOC content) that could act as confounding factors, and to develop a site-specific toxicity-score based on minimum significant difference approach. Confounding factors seem not to affect test results. The procedure to develop the toxicity score took into account the relatively lower sensitivity of C. orientale with respect to other amphipods commonly used in toxicity tests (Ampelisca abdita and Rhepoxynius abronius).
- Published
- 2008
- Full Text
- View/download PDF
26. Potential role of sulfide and ammonia as confounding factors in elutriate toxicity bioassays with early life stages of sea urchins and bivalves.
- Author
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Losso C, Novelli AA, Picone M, Marchetto D, Pantani C, Ghetti PF, and Ghirardini AV
- Subjects
- Animals, Copper toxicity, Embryo, Nonmammalian drug effects, Environmental Monitoring, Female, Fertilization drug effects, Geologic Sediments chemistry, Italy, Male, No-Observed-Adverse-Effect Level, Spermatozoa drug effects, Spermatozoa physiology, Ammonia analysis, Ostreidae physiology, Sea Urchins physiology, Sulfides analysis, Toxicity Tests methods, Water Pollutants, Chemical toxicity
- Abstract
This work reports some considerations on the possible contribution of sulfide and ammonia to the toxicity of elutriate samples of sediments from the Venice lagoon, tested with a battery of bioassays using early life stages of the sea urchin Paracentrotus lividus and the oyster Crassostrea gigas. A comparison of ammonia or sulfide concentration in the test matrix, matrix toxicity, and the sensitivity limit of bioassays for ammonia or sulfide were used in evaluating toxicity data. Results highlighted that sperm cell and embryo toxicity of elutriates were not affected by sulfides. Neither was any direct relationship shown between elutriate toxicity and ammonia concentration. Most elutriates had ammonia concentrations below the sensitivity limit of acute test methods, while the more sensitive subchronic toxicity tests were affected by ammonia interference in some samples.
- Published
- 2007
- Full Text
- View/download PDF
27. Magnetic coil stimulation of the human lumbosacral vertebral column: site of stimulation and clinical application.
- Author
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Chokroverty S, Flynn D, Picone MA, Chokroverty M, and Belsh J
- Subjects
- Adult, Aged, Aged, 80 and over, Electromyography, Female, Humans, Low Back Pain etiology, Male, Middle Aged, Peripheral Nervous System Diseases complications, Peripheral Nervous System Diseases diagnosis, Reaction Time physiology, Low Back Pain physiopathology, Lumbosacral Region physiopathology, Magnetics, Spinal Nerve Roots physiopathology
- Abstract
We describe the technique of magnetic coil (MC) stimulation of the lumbosacral roots and the possible site of stimulation in 22 control subjects, and the clinical usefulness of MC stimulation in 5 patients with low back pain. We observed 2 components in the compound muscle action potential of the soleus muscle following MC stimulation over the lumbosacral region. The second component had the physiological properties of the H reflex. The conduction time from the anterior horn cells of the lumbosacral spinal cord to the site of nerve root stimulation over the lumbosacral vertebral column was indirectly calculated as between 3.9 and 4.1 msec. Assuming a conduction velocity of 50 m/sec this would represent a distance of approximately 20 cm from the spinal motor neurons. Based on our control and patient data we conclude that the MC stimulation may be an useful technique for the diagnosis of lumbosacral radiculoplexopathy.
- Published
- 1993
- Full Text
- View/download PDF
28. Percutaneous magnetic coil stimulation of human cervical vertebral column: site of stimulation and clinical application.
- Author
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Chokroverty S, Picone MA, and Chokroverty M
- Subjects
- Adult, Aged, Electric Stimulation, Electromyography, Female, Humans, Male, Middle Aged, Muscles physiology, Neck, Peripheral Nervous System Diseases physiopathology, Reaction Time, Reference Values, Magnetics, Spinal Cord physiology
- Abstract
In order to understand which neural elements are excited after percutaneous magnetic coil (MC) stimulation over the cervical vertebral column we have performed such study in 8 normal subjects and 4 patients. On moving the coil rostrocaudally up to 3 cm and horizontally up to 2 cm from the midline we found no change in the latencies of the compound muscle action potentials to biceps, deltoid, abductor pollicis brevis (APB) and abductor digiti minimi muscles indicating a fixed site of excitation of the spinal roots within the intervertebral foramina. F latencies to APB after stimulation of the median nerve at the wrist were always longer than the direct latencies obtained after cervical vertebral stimulation. The mean difference between indirect latency based on F technique and direct latency to APB was 0.45 msec which represented a distance of 2.7 cm distal to the anterior horn cells assuming a conduction velocity of 60 m/sec. MC stimulation in 2 patients suggested a diagnosis of cervical radiculopathy which was confirmed by imaging studies or operative findings. Both MC and needle root stimulation in one patient with diabetic brachial plexopathy and in another with diabetic polyneuropathy suggested that the needle stimulation occurred about 1.2-1.8 cm proximal to MC stimulation.
- Published
- 1991
- Full Text
- View/download PDF
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