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Litsi-Mizan V, Kalantzi I, Tsapakis M, Pergantis SA, Karakassis I, Apostolaki ET. Trajectories of trace element accumulation in seagrass (Posidonia oceanica) over a decade reveal the footprint of fish farming. Environ Sci Pollut Res Int 2024; 31:28139-28152. [PMID: 38532209 DOI: 10.1007/s11356-024-32910-0] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 03/10/2024] [Indexed: 03/28/2024]
Abstract
To evaluate the effect of trace element (TE) release from fish farms on seagrass Posidonia oceanica, we compared TE concentrations (As, Cd, Co, Cu, Mn, Mo, Ni, Pb, V, Zn) in shoots near fish cages (Station 'Cage') with those away from them (Station 'Control') in two fish farm facilities (Site 1 and Site 2, North Aegean Sea, Greece). We assessed the present (i.e., 2021, year of sampling) and past (reconstructed period 2012-2020) accumulation of TEs using the living compartments (leaf blades, sheaths, rhizomes, roots, epiphytes) and the dead sheaths, respectively. We also assessed possible seagrass degradation by reconstructing past rhizome production. P. oceanica rhizome production at the 'Cage' stations was up to 50% lower than at the 'Control' stations. Most TE concentrations were higher at 'Cage' stations, but the differences often depended on the seagrass living compartment. Significant differentiation between 'Cage' and 'Control' stations was observed based on the TE concentrations of the dead sheaths during 2012-2020. The contamination level at the 'Cage' stations was mostly moderate in Site 1 and low in Site 2, during the reconstructed period, while an increasing contamination trend was found for certain potential phytotoxic TEs (As, Cu, Cd, Mo, V). Our results emphasize the need for the aquaculture industry to work towards a more ecologically aware approach.
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Affiliation(s)
- Victoria Litsi-Mizan
- Biology Department, University of Crete, Voutes University Campus, P.O. Box 2208, 70013, Heraklion, Crete, Greece
- Institute of Oceanography, Hellenic Centre for Marine Research, P.O. Box 2214, 71003, Heraklion, Crete, Greece
| | - Ioanna Kalantzi
- Institute of Oceanography, Hellenic Centre for Marine Research, P.O. Box 2214, 71003, Heraklion, Crete, Greece
| | - Manolis Tsapakis
- Institute of Oceanography, Hellenic Centre for Marine Research, P.O. Box 2214, 71003, Heraklion, Crete, Greece
| | - Spiros A Pergantis
- Department of Chemistry, Environmental Chemical Processes Laboratory, University of Crete, Voutes University Campus, P.O. Box 2208, 70013, Heraklion, Crete, Greece
| | - Ioannis Karakassis
- Biology Department, University of Crete, Voutes University Campus, P.O. Box 2208, 70013, Heraklion, Crete, Greece
| | - Eugenia T Apostolaki
- Institute of Oceanography, Hellenic Centre for Marine Research, P.O. Box 2214, 71003, Heraklion, Crete, Greece.
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Vandenhole M, Lu X, Tsakireli D, Mermans C, De Rouck S, De Beer B, Simma E, Pergantis SA, Jonckheere W, Vontas J, Van Leeuwen T. Contrasting roles of cytochrome P450s in amitraz and chlorfenapyr resistance in the crop pest Tetranychus urticae. Insect Biochem Mol Biol 2024; 164:104039. [PMID: 37992878 DOI: 10.1016/j.ibmb.2023.104039] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 11/24/2023]
Abstract
The molecular mechanisms of amitraz and chlorfenapyr resistance remain only poorly understood for major agricultural pests and vectors of human diseases. This study focusses on a multi-resistant field strain of the crop pest Tetranychus urticae, which could be readily selected in the laboratory to high levels of amitraz and chlorfenapyr resistance. Toxicity experiments using tralopyril, the active toxophore of chlorfenapyr, suggested decreased activation as a likely mechanism underlying resistance. Starting from the same parental strain, transcriptome profiling revealed that a cluster of detoxifying genes was upregulated after amitraz selection, but unexpectedly downregulated after chlorfenapyr selection. Further functional validation associated the upregulation of CYP392A16 with amitraz metabolism and the downregulation of CYP392D8 with reduced activation of chlorfenapyr to tralopyril. Genetic mapping (QTL analysis by BSA) was conducted in an attempt to unravel the genetic mechanisms of expression variation and resistance. This revealed that chlorfenapyr resistance was associated with a single QTL, while 3 QTLs were uncovered for amitraz resistance. Together with the observed contrasting gene expression patterns, we argue that transcriptional regulators most likely underly the distinct expression profiles associated with resistance, but these await further functional validation.
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Affiliation(s)
- Marilou Vandenhole
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, Belgium
| | - Xueping Lu
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, Belgium
| | - Dimitra Tsakireli
- Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, 75 Iera Odos Street, GR-11855, Athens, Greece; Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology Hellas, GR-700 13, Heraklion, Crete, Greece
| | - Catherine Mermans
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, Belgium
| | - Sander De Rouck
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, Belgium
| | - Berdien De Beer
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, Belgium
| | - Eba Simma
- Department of Biology, College of Natural Sciences, Jimma University, Jimma, Ethiopia
| | - Spiros A Pergantis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, 70013, Heraklion, Crete, Greece
| | - Wim Jonckheere
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, Belgium
| | - John Vontas
- Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, 75 Iera Odos Street, GR-11855, Athens, Greece; Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology Hellas, GR-700 13, Heraklion, Crete, Greece
| | - Thomas Van Leeuwen
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, Belgium.
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Yunta C, Ooi JMF, Oladepo F, Grafanaki S, Pergantis SA, Tsakireli D, Ismail HM, Paine MJI. Author Correction: Chlorfenapyr metabolism by mosquito P450s associated with pyrethroid resistance identifies potential activation markers. Sci Rep 2023; 13:20082. [PMID: 37973988 PMCID: PMC10654406 DOI: 10.1038/s41598-023-47249-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023] Open
Affiliation(s)
- Cristina Yunta
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK
| | - Jocelyn M F Ooi
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK
| | | | - Sofia Grafanaki
- Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 700 13, Greece
| | - Spiros A Pergantis
- Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 700 13, Greece
| | - Dimitra Tsakireli
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology, Hellas, 100 N. Plastira Street, Heraklion, 700 13, Greece
- Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, 75 Iera Odos Street, Athens, 118 55, Greece
| | - Hanafy M Ismail
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK.
| | - Mark J I Paine
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK.
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Yunta C, Ooi JMF, Oladepo F, Grafanaki S, Pergantis SA, Tsakireli D, Ismail HM, Paine MJI. Chlorfenapyr metabolism by mosquito P450s associated with pyrethroid resistance identifies potential activation markers. Sci Rep 2023; 13:14124. [PMID: 37644079 PMCID: PMC10465574 DOI: 10.1038/s41598-023-41364-2] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 08/25/2023] [Indexed: 08/31/2023] Open
Abstract
Chlorfenapyr is a pro-insecticide increasingly used in combination with pyrethroids such as a-cypermethrin or deltamethrin in insecticide treated bednets (ITNs) to control malaria transmitted by pyrethroid-resistant mosquito populations. Chlorfenapyr requires P450 activation to produce tralopyril and other bioactive metabolites. Pyrethroid resistance is often associated with elevated levels of chemoprotective P450s with broad substrate specificity, which could influence chlorfenapyr activity. Here, we have investigated chlorfenapyr metabolism by a panel of eight P450s commonly associated with pyrethroid resistance in An. gambiae and Ae. aegypti, the major vectors of malaria and arboviruses. Chlorfenapyr was activated to tralopyril by An. gambiae CYP6P3, CYP9J5, CYP9K1 and Ae. aegypti, CYP9J32. The Kcat/KM value of 0.66 μM-1 min-1 for CYP9K1 was, 6.7 fold higher than CYP6P3 and CYP9J32 (both 0.1 μM-1 min-1) and 22-fold higher than CYP9J5 (0.03 μM-1 min-1). Further investigation of the effect of -cypermethrin equivalent to the ratios used with chlorfenapyr in bed nets (~ 1:2 molar ratio) resulted in a reduction in chlorfenapyr metabolism by CYP6P3 and CYP6K1 of 76.8% and 56.8% respectively. This research provides valuable insights into the metabolism of chlorfenapyr by mosquito P450s and highlights the need for continued investigation into effective vector control strategies.
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Affiliation(s)
- Cristina Yunta
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK
| | - Jocelyn M F Ooi
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK
| | | | - Sofia Grafanaki
- Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 700 13, Greece
| | - Spiros A Pergantis
- Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 700 13, Greece
| | - Dimitra Tsakireli
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology, Hellas, 100 N. Plastira Street, Heraklion, 700 13, Greece
- Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, 75 Iera Odos Street, Athens, 118 55, Greece
| | - Hanafy M Ismail
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK.
| | - Mark J I Paine
- Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK.
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Chronakis MI, Mavrakis E, García RÁF, Montes-Bayón M, Bettmer J, Pitta P, Tsapakis M, Kalantzi I, Tsiola A, Pergantis SA. Investigating the behavior of ultratrace levels of nanoparticulate and ionic silver in a seawater mesocosm using single particle inductively coupled plasma - Mass spectrometry. Chemosphere 2023:139109. [PMID: 37270041 DOI: 10.1016/j.chemosphere.2023.139109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 05/09/2023] [Accepted: 05/31/2023] [Indexed: 06/05/2023]
Abstract
Silver nanoparticles (AgNPs) nowadays appear in close to 24% of consumer products that contain engineered nanomaterials. Thus, they are expected to be released into the environment, where their fate and effect are still undetermined. Considering the evidenced efficacy of the single particle - Inductively Coupled Plasma - Mass Spectrometry (sp ICP-MS) technique in the study of nanomaterials, this work reports on the use of sp ICP-MS along with an online dilution sample introduction system for the direct analysis of untreated and spiked seawater samples, as part of a larger scale experiment studying the fate of Ag (ionic and nanoparticles) in seawater mesocosm systems. Silver nanoparticles coated with branched polyethyleneimine (BPEI@AgNPs) or ionic silver (Ag+) were introduced gradually into the seawater mesocosm tanks at very low, environmentally relevant concentrations (50 ng Ag L-1 per day, for 10 consecutive days, up to a total of 500 ng Ag L-1), and samples were collected and analyzed daily, within a consistent time window. Using very low detector dwell time (75 μs) and specialized data treatment, information was obtained on the nanoparticles' size distribution and particle number concentration, as well as the ionic silver content, of both the AgNPs and the Ag+ treated seawater mesocosm tanks. The results for the AgNP treated samples indicated the rapid degradation of the added silver particles, and the subsequent increase of ionic silver, with recoveries close to 100% for the first days of the experiment. On the other hand, particle formation was observed in the Ag+ treated seawater tanks, and even though the number concentration of silver-containing nanoparticles increased throughout the experiment, the amount of silver per particle remained relatively constant from the early days of the experiment. In addition, the online dilution sample introduction system for the ICP-MS proved capable of handling the untreated seawater matrix without significant contamination issues and downtime, while the low dwell time and data treatment procedure developed were shown to be suitable for the analysis of nanomaterials at the low nm-scale, despite the complex and heavy matrix introduced into the ICP-MS.
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Affiliation(s)
- Michail Ioannis Chronakis
- University of Crete, Department of Chemistry, Environmental Chemical Processes Laboratory, Voutes, 70013, Heraklion, Greece; Federal Institute for Materials Research and Testing (BAM) - Division 1.1 - Inorganic Trace Analysis, Richard-Willstätter-Str. 11, 12489 Berlin, Germany
| | - Emmanouil Mavrakis
- University of Crete, Department of Chemistry, Environmental Chemical Processes Laboratory, Voutes, 70013, Heraklion, Greece
| | - Roberto Álvarez-Fernández García
- University of Oviedo, Faculty of Chemistry, Dept. of Physical and Analytical Chemistry and Instituto de Investigación Sanitaria Del Principado de Asturias (ISPA), Oviedo, Spain
| | - Maria Montes-Bayón
- University of Oviedo, Faculty of Chemistry, Dept. of Physical and Analytical Chemistry and Instituto de Investigación Sanitaria Del Principado de Asturias (ISPA), Oviedo, Spain
| | - Jörg Bettmer
- University of Oviedo, Faculty of Chemistry, Dept. of Physical and Analytical Chemistry and Instituto de Investigación Sanitaria Del Principado de Asturias (ISPA), Oviedo, Spain
| | - Paraskevi Pitta
- Hellenic Centre for Marine Research, Institute of Oceanography, Gournes, Heraklion, Greece
| | - Manolis Tsapakis
- Hellenic Centre for Marine Research, Institute of Oceanography, Gournes, Heraklion, Greece
| | - Ioanna Kalantzi
- Hellenic Centre for Marine Research, Institute of Oceanography, Gournes, Heraklion, Greece
| | - Anastasia Tsiola
- Hellenic Centre for Marine Research, Institute of Oceanography, Gournes, Heraklion, Greece
| | - Spiros A Pergantis
- University of Crete, Department of Chemistry, Environmental Chemical Processes Laboratory, Voutes, 70013, Heraklion, Greece.
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Lu X, Vandenhole M, Tsakireli D, Pergantis SA, Vontas J, Jonckheere W, Van Leeuwen T. Increased metabolism in combination with the novel cytochrome b target-site mutation L258F confers cross-resistance between the Q o inhibitors acequinocyl and bifenazate in Tetranychus urticae. Pestic Biochem Physiol 2023; 192:105411. [PMID: 37105638 DOI: 10.1016/j.pestbp.2023.105411] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 06/19/2023]
Abstract
Acequinocyl and bifenazate are potent acaricides acting at the Qo site of complex III of the electron transport chain, but frequent applications of these acaricides have led to the development of resistance in spider mites. Target-site resistance caused by mutations in the conserved cd1- and ef-helices of the Qo pocket of cytochrome b has been elucidated as the main resistance mechanism. We therefore monitored Qo pocket mutations in European field populations of Tetranychus urticae and uncovered a new mutation, L258F. The role of this mutation was validated by revealing patterns of maternal inheritance and by the independently replicated introgression in an unrelated susceptible genetic background. However, the parental strain exhibited higher resistance levels than conferred by the mutation alone in isogenic lines, especially for acequinocyl, implying the involvement of strong additional resistance mechanisms. This was confirmed by revealing a polygenic inheritance pattern with classical genetic crosses and via synergism experiments. Therefore, a genome-wide expression analysis was conducted that identified a number of highly overexpressed detoxification genes, including many P450s. Functional expression revealed that the P450 CYP392A11 can metabolize bifenazate by hydroxylation of the ring structure. In conclusion, the novel cytochrome b target-site mutation L258F was uncovered in a recently collected field strain and its role in acequinocyl and bifenazate resistance was validated. However, the high level of resistance in this strain is most likely caused by a combination of target-site resistance and P450-based increased detoxification, potentially acting in synergism.
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Affiliation(s)
- Xueping Lu
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Coupure Links 653, Ghent University, B-9000 Ghent, Belgium.
| | - Marilou Vandenhole
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Coupure Links 653, Ghent University, B-9000 Ghent, Belgium.
| | - Dimitra Tsakireli
- Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, 75 Iera Odos Street, GR-11855 Athens, Greece; Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology, Hellas, 100 N. Plastira Street, GR-700 13 Heraklion, Crete, Greece.
| | - Spiros A Pergantis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, 70013 Heraklion, Crete, Greece.
| | - John Vontas
- Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, 75 Iera Odos Street, GR-11855 Athens, Greece; Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology, Hellas, 100 N. Plastira Street, GR-700 13 Heraklion, Crete, Greece.
| | - Wim Jonckheere
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Coupure Links 653, Ghent University, B-9000 Ghent, Belgium.
| | - Thomas Van Leeuwen
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Coupure Links 653, Ghent University, B-9000 Ghent, Belgium.
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Detopoulou P, Letsiou S, Nomikos T, Karagiannis A, Pergantis SA, Pitsavos C, Panagiotakos DB, Antonopoulou S. Selenium, Selenoproteins and 10-year Cardiovascular Risk: Results from the ATTICA Study. Curr Vasc Pharmacol 2023; 21:346-355. [PMID: 37526183 DOI: 10.2174/1570161121666230731142023] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 05/05/2023] [Accepted: 06/22/2023] [Indexed: 08/02/2023]
Abstract
BACKGROUND Selenium (Se) is an essential trace element that is involved in several pathophysiological functions. The relationship of Se with cardiovascular disease remains inconclusive, especially regarding the role of different selenospecies. OBJECTIVE The present study assessed the levels of Se distribution in plasma selenoproteins, namely glutathione peroxidase 3 (GPx3), selenoprotein P (SelP) and selenoalbumin (SeAlb) and total Se in selenoproteins in relation to 10-year cardiovascular risk in the ATTICA prospective study. METHODS A sub-sample from the ATTICA Study's database, consisting of 278 subjects (114 women and 164 men) with data on Se and selenoproteins levels, was considered. SeGPx3, SelP, and SeAlb in human plasma were simultaneously determined by high-performance liquid chromatography (HPLC) coupled with inductively coupled plasma mass spectrometry (ICP-MS) at baseline. The duration of the follow-up was 8.74 ±2.36 years (mean± standard deviation) and cardiovascular outcomes were recorded. Cox proportional hazards models were applied with total Se or selenoprotein Se as independent variables adjusted for several covariates. RESULTS Total Se in selenoproteins was positively related to 10-year relative risk of cardiovascular disease (Hazard Ratios of 3rd vs 2nd tertile 10.02, 95% CI:1.15, 92.34). Subjects with high Se but low SeGPx3, as identified by discordant percentiles in the distribution of SeGPx3 and Se, had a higher cardiovascular risk. CONCLUSION The differentiated effects of circulating selenoproteins on cardiovascular disease risk in the present study, suggest the importance of redox regulation by specific selenoproteins.
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Affiliation(s)
- Paraskevi Detopoulou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | - Sophia Letsiou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | - Tzortzis Nomikos
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | - Alexandros Karagiannis
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | | | - Christos Pitsavos
- First Cardiology Clinic, Medical School, National and Kapodistrian University of Athens, Hippokration Hospital, Athens, Greece
| | - Demosthenes B Panagiotakos
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | - Smaragdi Antonopoulou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
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Kokarakis EJ, Nazos TT, Mavroudakis L, Stratigakis NC, Sfendourakis GP, Lioudaki S, Spyros A, Pergantis SA, Ghanotakis DF. Structural and physicochemical characterization of an aminosugar-rich exopolysaccharide isolated from a Chlorella sp. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102881] [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: 11/01/2022]
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Mavrakis E, Toprakcioglu Z, Lydakis-Simantiris N, Knowles TPJ, Pergantis SA. A chip-based supersonic microfluidic nebulizer for efficient sample introduction into inductively coupled plasma - Mass spectrometry. Anal Chim Acta 2022; 1229:340342. [PMID: 36156219 DOI: 10.1016/j.aca.2022.340342] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 08/29/2022] [Accepted: 08/31/2022] [Indexed: 11/29/2022]
Abstract
As the use of microfluidic chips for handling biological samples is increasing, so is the need for combining them with powerful analytical techniques for metal determination such as inductively-coupled plasma mass spectrometry (ICP-MS). So far, coupling a microfluidic chip to an ICP-MS has been demonstrated mainly through the use of conventional pneumatic micro-flow nebulizers. However, disadvantages associated with the use of such nebulizers entail dead volume issues and liquid suction exerted on the outlet channel of the chip. Herein, we propose that a microfluidic chip, bearing a pneumatic nozzle for liquid nebulization, has the potential to advance metal determination in chip-based ICP-MS. More specifically, we demonstrate for the first time that the coupling of a chip-based supersonic microfluidic nebulizer (chip-μf-Neb) to an ICP-MS can be conveniently achieved through the use of a spray chamber with a laminar flow makeup gas. Operation of the combined system was evaluated at low liquid flow rates across 0.5-20 μL min-1, while nebulization and makeup argon (Ar) gas flow rates were optimized with respect to maximizing indium (In) sensitivity and minimizing oxide formation; a maximum sensitivity of 40000 cps (μg L-1)-1 was achieved at 10 μL min-1. The system was further evaluated for its performance in single-particle analysis, featuring a transport efficiency of 46% for Ag nanoparticles. Finally, the capabilities for conducting single-cell analysis were demonstrated with the detection of 80Se and 75As in individual Chlamydomas reinhardtii cells, which were previously incubated in 20 μM of selenate and 300 μM of arsenate, respectively. Efficient operation at low liquid flow rates along with the absence of self-aspiration render this nebulizer a promising tool for combining the powerful field of microfluidics with metal quantitation by means of ICP-MS.
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Affiliation(s)
- E Mavrakis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 70013, Greece
| | - Z Toprakcioglu
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - N Lydakis-Simantiris
- Laboratory of Biological & Biotechnological Applications, Department of Agriculture, Hellenic Mediterranean University, Estavromenos, Heraklion, 71410, Greece; Hellenic Mediterranean University Research Center, Institute of Agri-food and Life Sciences, Heraklion, Crete, Greece
| | - T P J Knowles
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom; Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom.
| | - S A Pergantis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 70013, Greece.
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Vetsis E, Kalantzi I, Pergantis SA, Kokokiris L, Karakassis I. Metals in tissues of marine fish from the Thermaikos Gulf, Eastern Mediterranean Sea: Detection of changes with trophic level. Mar Pollut Bull 2021; 173:113024. [PMID: 34649207 DOI: 10.1016/j.marpolbul.2021.113024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/03/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 06/13/2023]
Abstract
Concentrations of 27 metals and elements were investigated in the tissues of 28 demersal and pelagic marine fish species from the Eastern Mediterranean Sea. The analysis indicated highest concentrations of accumulation for the majority of elements in the gills, liver, and scales; whereas, lowest assimilation of elements was reported in the muscle. Pelagic fish accumulated higher concentrations of elements than demersal fish. An inverse correlation due to the growth dilution effect was revealed among element concentrations in the gills, liver, muscle, and skin tissues, and fish size. Patterns of biomagnification for Cs solely were recorded in the muscle and patterns of biodilution for most elements were evident in the gills, liver, muscle, and skin tissues. A positive correlation was determined between trophic level and element concentrations in the scales which could not only be associated with fish diet, but also with metal concentrations in the ambient environment and scales size.
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Affiliation(s)
- Evelyn Vetsis
- Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece
| | - Ioanna Kalantzi
- Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece; Hellenic Centre for Marine Research, Institute of Oceanography, P. O. Box 2214, 71003 Heraklion, Crete, Greece.
| | - Spiros A Pergantis
- Chemistry Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece
| | - Lambros Kokokiris
- Department of Nutritional Sciences and Dietetics, International Hellenic University, Sindos, 57400 Thessaloniki, Greece
| | - Ioannis Karakassis
- Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece
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Mavrakis E, Pergantis SA. Chip-based microfluidics on-line with inductively coupled plasma - mass spectrometry for standard dilution analysis. Anal Chim Acta 2021; 1179:338830. [PMID: 34535263 DOI: 10.1016/j.aca.2021.338830] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 07/01/2021] [Accepted: 07/04/2021] [Indexed: 10/20/2022]
Abstract
Microfluidics coupled on-line with ICP-MS detection can be combined with powerful quantitation procedures that take advantage of internal standardization and standard additions, such as the recently introduced Standard Dilution Analysis (SDA). Although so far used at mL min-1 flow rates, here we demonstrate that SDA can be conveniently employed with a microfluidic chip-based ICP-MS system to improve determination accuracy for various sample types, including water, biological and cell digest samples, analyzed at μL min-1 flow rates. The efficient coupling of a microfluidic chip to ICP-MS was accomplished using a combination of commercially available components, including a pneumatic high-efficiency nebulizer and a spray chamber designed to allow for the addition of a laminar flow makeup gas. The addition of the makeup gas was crucial in order to avoid detrimental suction effects that can disrupt the operation of the microfluidic chip and cause signal instability, while it still allowed for the highly sensitive detection of metal isotopes by using ICP-MS. All mixing and dilution operations of the sample with the two calibration solutions required for SDA were performed in an automated and highly reproducible fashion on the microfluidic chip with the assistance of an external distributor valve. High average recoveries (97.4-100.1%) and low average relative standard deviations (2.9-4.8%) were achieved for the determined elements (Cd, Co, Pb, Cr) across several spiked matrices and certified reference materials, whereas only 140 μL of sample is required for SDA in triplicate or 40 μL for a single analysis. Hence, accuracy, precision, limited sample consumption, and the elimination of the need for manual sample dilution and mixing manipulations are some of the advantages of this newly developed chip-based microfluidic SDA ICP-MS technique.
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Affiliation(s)
- Emmanouil Mavrakis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 70013, Greece
| | - Spiros A Pergantis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 70013, Greece.
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12
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Fotoukkiaii SM, Wybouw N, Kurlovs AH, Tsakireli D, Pergantis SA, Clark RM, Vontas J, Van Leeuwen T. High-resolution genetic mapping reveals cis-regulatory and copy number variation in loci associated with cytochrome P450-mediated detoxification in a generalist arthropod pest. PLoS Genet 2021; 17:e1009422. [PMID: 34153029 PMCID: PMC8248744 DOI: 10.1371/journal.pgen.1009422] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 07/01/2021] [Accepted: 05/28/2021] [Indexed: 12/11/2022] Open
Abstract
Chemical control strategies are driving the evolution of pesticide resistance in pest populations. Understanding the genetic mechanisms of these evolutionary processes is of crucial importance to develop sustainable resistance management strategies. The acaricide pyflubumide is one of the most recently developed mitochondrial complex II inhibitors with a new mode of action that specifically targets spider mite pests. In this study, we characterize the molecular basis of pyflubumide resistance in a highly resistant population of the spider mite Tetranychus urticae. Classical genetic crosses indicated that pyflubumide resistance was incompletely recessive and controlled by more than one gene. To identify resistance loci, we crossed the resistant population to a highly susceptible T. urticae inbred strain and propagated resulting populations with and without pyflubumide exposure for multiple generations in an experimental evolution set-up. High-resolution genetic mapping by a bulked segregant analysis approach led to the identification of three quantitative trait loci (QTL) linked to pyflubumide resistance. Two QTLs were found on the first chromosome and centered on the cytochrome P450 CYP392A16 and a cluster of CYP392E6-8 genes. Comparative transcriptomics revealed a consistent overexpression of CYP392A16 and CYP392E8 in the experimental populations that were selected for pyflubumide resistance. We further corroborated the involvement of CYP392A16 in resistance by in vitro functional expression and metabolism studies. Collectively, these experiments uncovered that CYP392A16 N-demethylates the toxic carboxamide form of pyflubumide to a non-toxic compound. A third QTL coincided with cytochrome P450 reductase (CPR), a vital component of cytochrome P450 metabolism. We show here that the resistant population harbors three gene copies of CPR and that this copy number variation is associated with higher mRNA abundance. Together, we provide evidence for detoxification of pyflubumide by cytochrome P450s that is likely synergized by gene amplification of CPR. Our understanding of the causal genetic variants that drive the evolution of quantitative traits, such as polygenic pesticide resistance, remains very limited. Here, we followed a high-resolution genetic mapping approach to localize the genetic variants that cause pyflubumide resistance in the two-spotted spider mite Tetranychus urticae. Three well-supported QTL were uncovered and pointed towards a major role for cytochrome P450-mediated detoxification. Cis-regulatory variation for cytochrome P450s was observed, and in vitro cytochrome P450 experiments showed that pyflubumide was metabolized into a non-toxic derivate. A third QTL centered on cytochrome P450 reductase (CPR), which is required for cytochrome P450 activity, and is amplified in pyflubumide resistant populations. Our results indicate that pyflubumide resistance is mediated by cytochrome P450 detoxification that is enhanced by gene amplification at the CPR locus.
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Affiliation(s)
- Seyedeh Masoumeh Fotoukkiaii
- Department of Evolutionary and Population Biology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, the Netherlands
| | - Nicky Wybouw
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
- Terrestrial Ecology Unit, Department of Biology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Andre H. Kurlovs
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
- School of Biological Sciences, University of Utah, Salt Lake City, Utah, United States of America
| | - Dimitra Tsakireli
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, Heraklion, Crete, Greece
- Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, Athens, Greece
| | | | - Richard M. Clark
- School of Biological Sciences, University of Utah, Salt Lake City, Utah, United States of America
- Henry Eyring Center for Cell and Genome Science, University of Utah, Salt Lake City, Utah, United States of America
| | - John Vontas
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, Heraklion, Crete, Greece
- Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, Athens, Greece
| | - Thomas Van Leeuwen
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
- * E-mail:
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Kalantzi I, Rico A, Mylona K, Pergantis SA, Tsapakis M. Fish farming, metals and antibiotics in the eastern Mediterranean Sea: Is there a threat to sediment wildlife? Sci Total Environ 2021; 764:142843. [PMID: 33097273 DOI: 10.1016/j.scitotenv.2020.142843] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 06/12/2020] [Revised: 09/29/2020] [Accepted: 10/04/2020] [Indexed: 06/11/2023]
Abstract
Chemical residues released from aquaculture farms may persist in the environment and may pose adverse ecological effects. The aim of this study was to assess the pollution status of marine sediments underneath or close to aquaculture farms in the Eastern Mediterranean Sea, the factors that affect the elemental distribution, and the exceedance of environmental quality standards and factors. To this end, surface sediment samples were collected (underneath fish cages, at 25 m distance and from a reference station) from 48 fish farms in Greece with variable environmental and geochemical characteristics. The content of 29 metals and major and trace elements, and three antibiotics (oxytetracycline, florfenicol, and flumequine), was determined in the sediment samples. Most of the elements found in the sediments originated from geological sources and their concentrations were close to Earth's Crust content. Below and close to fish farm cages, the sediment was enriched with P, Cu, Zn, Mo, and Cd mainly due to the aquaculture biosolid deposition, and changes in environmental conditions (increased organic matter, low redox potential). Cr and As were found to exceed twice the upper threshold limit of the available sediment quality guidelines in 13.5% and 7.3% of sampling stations, respectively. The potential ecological risk of V, Cr, Mn, Co, Ni, Cu, Zn, As and Pb was found to be low in the sediment close to fish cages except for Cd, which may pose a moderate to considerable risk in 12.5% of sampled fish farms. However, the estimated risks for this metal may be influenced by the high background levels found in the investigated areas. This study also shows that the occurrence of antibiotics in sediments below fish farms in the Eastern Mediterranean Sea is very sparse (i.e., only flumequine was found in two farms) and concentration levels are relatively low.
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Affiliation(s)
- Ioanna Kalantzi
- Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 2214, 71003 Heraklion, Crete, Greece; Biology Department, University of Crete, Voutes Campus, 70013 Heraklion, Crete, Greece.
| | - Andreu Rico
- IMDEA Water Institute, Science and Technology Campus of the University of Alcalá, Avenida Punto Com 2, 28805, Alcalá de Henares, Madrid, Spain
| | - Kyriaki Mylona
- Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 2214, 71003 Heraklion, Crete, Greece
| | - Spiros A Pergantis
- Environmental Chemical Processes Laboratory, Chemistry Department, University of Crete, Voutes Campus, 70013 Heraklion, Crete, Greece
| | - Manolis Tsapakis
- Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 2214, 71003 Heraklion, Crete, Greece
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Rosenkranz D, Kriegel FL, Mavrakis E, Pergantis SA, Reichardt P, Tentschert J, Jakubowski N, Laux P, Panne U, Luch A. Versatile Dual-Inlet Sample Introduction System for Multi-Mode Single Particle Inductively Coupled Plasma Mass Spectrometry Analysis and Validation. J Vis Exp 2020. [PMID: 33044444 DOI: 10.3791/61653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Metal-containing nanoparticles (NP) can be characterized with inductively coupled plasma mass spectrometers (ICP-MS) in terms of their size and number concentration by using the single-particle mode of the instrument (spICP-MS). The accuracy of measurement depends on the setup, operational conditions of the instrument and specific parameters that are set by the user. The transport efficiency of the ICP-MS is crucial for the quantification of the NP and usually requires a reference material with homogenous size distribution and a known particle number concentration. Currently, NP reference materials are available for only a few metals and in limited sizes. If particles are characterized without a reference standard, the results of both size and particle number may be biased. Therefore, a dual-inlet setup for characterizing nanoparticles with spICP-MS was developed to overcome this problem. This setup is based on a conventional introduction system consisting of a pneumatic nebulizer (PN) for nanoparticle solutions and a microdroplet generator (µDG) for ionic calibration solutions. A new and flexible interface was developed to facilitate the coupling of µDG, PN and the ICP-MS system. The interface consists of available laboratory components and allows for the calibration, nanoparticle (NP) characterization and cleaning of the arrangement, while the ICP-MS instrument is still running. Three independent analysis modes are available for determining particle size and number concentration. Each mode is based on a different calibration principle. While mode I (counting) and mode III (µDG) are known from the literature, mode II (sensitivity), is used to determine the transport efficiency by inorganic ionic standard solutions only. It is independent of NP reference materials. The µDG based inlet system described here guarantees superior analyte sensitivities and, therefore, lower detection limits (LOD). The size dependent LODs achieved are less than 15 nm for all NP (Au, Ag, CeO2) investigated.
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Affiliation(s)
- Daniel Rosenkranz
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR);
| | - Fabian L Kriegel
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR)
| | - Emmanouil Mavrakis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete
| | - Spiros A Pergantis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete
| | - Philipp Reichardt
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR)
| | - Jutta Tentschert
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR)
| | | | - Peter Laux
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR)
| | - Ulrich Panne
- Federal Institute for Materials Research and Testing (BAM)
| | - Andreas Luch
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR)
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15
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Nazos TT, Mavroudakis L, Pergantis SA, Ghanotakis DF. Biodegradation of phenol by Chlamydomonas reinhardtii. Photosynth Res 2020; 144:383-395. [PMID: 32358649 DOI: 10.1007/s11120-020-00756-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 01/22/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
The data presented in this particular study demonstrate that the biodegradation of phenol by Chlamydomonas reinhardtii is a dynamic bioenergetic process mainly affected by the production of catechol and the presence of a growth-promoting substrate in the culture medium. The study focused on the regulation of the bioenergetic equilibrium resulting from production of catechol after phenol oxidation. Catechol was identified by HPLC-UV and HPLC-ESI-MS/MS. Growth measurements revealed that phenol is a growth-limiting substrate for microalgal cultures. The Chlamydomonas cells proceed to phenol biodegradation because they require carbon reserves for maintenance of homeostasis. In the presence of acetic acid (a growth-promoting carbon source), the amount of catechol detected in the culture medium was negligible; apparently, acetic acid provides microalgae with sufficient energy reserves to further biodegrade catechol. It has been shown that when microalgae do not have sufficient energy reserves, a significant amount of catechol is released into the culture medium. Chlamydomonas reinhardtii acts as a versatile bioenergetic machine by regulating its metabolism under each particular set of growth conditions, in order to achieve an optimal balance between growth, homeostasis maintenance and biodegradation of phenol. The novel findings of this study reveal a paradigm showing how microalgal metabolic versatility can be used in the bioremediation of the environment and in potential large-scale applications.
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Affiliation(s)
- Theocharis T Nazos
- Department of Chemistry, University of Crete, Vasilika Voutes, Heraklion, Crete, 70013, Greece
| | - Leonidas Mavroudakis
- Department of Chemistry, University of Crete, Vasilika Voutes, Heraklion, Crete, 70013, Greece
| | - Spiros A Pergantis
- Department of Chemistry, University of Crete, Vasilika Voutes, Heraklion, Crete, 70013, Greece
| | - Demetrios F Ghanotakis
- Department of Chemistry, University of Crete, Vasilika Voutes, Heraklion, Crete, 70013, Greece.
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16
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Rosenkranz D, Kriegel FL, Mavrakis E, Pergantis SA, Reichardt P, Tentschert J, Jakubowski N, Laux P, Panne U, Luch A. Improved validation for single particle ICP-MS analysis using a pneumatic nebulizer / microdroplet generator sample introduction system for multi-mode nanoparticle determination. Anal Chim Acta 2019; 1099:16-25. [PMID: 31986273 DOI: 10.1016/j.aca.2019.11.043] [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] [Received: 08/01/2019] [Revised: 11/15/2019] [Accepted: 11/18/2019] [Indexed: 12/01/2022]
Abstract
This study reports on the development of a single-particle (sp) inductively coupled plasma mass spectrometry (ICP-MS) technique suitable for the multi-mode determination of nanoparticle (NP) metal mass fraction and number concentration. The described technique, which is based on a dual inlet system consisting of a pneumatic nebulizer (PN) and a microdroplet generator (MDG), allows for the sequential introduction of ionic metal calibrant solutions and nanoparticle suspensions via all combinations of the two inlets; thus allowing for a combination of three independent modes of analysis. A novel interface, assembled using standard analytical components (a demountable quartz ICP-MS torch, flexible non-conducting silicon tubing and various connectors), was used to interface the dual inlet system to an ICP-MS. The interface provided improved functionality, compared to a previous design. It is now possible to conveniently exchange and introduce standard solutions and samples via all inlet combinations, analyze them, and also wash the sample inlet systems while the whole setup is still connected to an operating ICP-MS. This setup provided seamless and robust operation in a total of three analysis modes, i.e. three ways to independently determine the metal mass fraction and NP number concentration. All three analyses modes could be carried out within a single analytical run lasting approximately 20 min. The unique feature of the described approach is that each analysis mode is based on a different calibration principle, thus constituting an independent way to determine metal mass fractions and nanoparticle number concentrations. Conducting the three independent state-of-the-art analysis, within a single analytical run, improves substantially the validation capabilities of sp-ICP-MS for NP analysis. To assess the technique's analytical performance, Au, Ag and CeO2 nanoparticles were analyzed. The determined average diameters for Au (56.7 ± 1.5 nm), Ag (72.8 ± 3.4 nm) and CeO2 (69.0 ± 6.4 nm) NPs were in close agreement for all three modes of analysis, as well as with the values provided by suppliers' for Au and Ag NPs (56.0 ± 0.5 for Au, 74.6 ± 3.8 nm for Ag). However, the determined average value for CeO2 was much higher than the expected 28.4 ± 10.4 nm, possibly due to NP agglomeration and the inability to detect NPs existing within the lower size range. The determined NP number concentrations, using analysis modes -I and -II, gave recoveries between 91 and 100% for the Au and Ag NP number concentrations. Whereas analysis mode -III showed a recovery of 70-88% for the same materials. Because of the polydispersity, the small size and polyhedral shape of the CeO2 NPs it was not possible to make NP number concentration comparisons for this material.
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Affiliation(s)
- Daniel Rosenkranz
- German Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany; Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Strasse 11, 12489, Berlin, Germany.
| | - Fabian L Kriegel
- German Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
| | - Emmanouil Mavrakis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, 70013, Heraklion, Greece
| | - Spiros A Pergantis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, 70013, Heraklion, Greece
| | - Philipp Reichardt
- German Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
| | - Jutta Tentschert
- German Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
| | | | - Peter Laux
- German Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
| | - Ulrich Panne
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Strasse 11, 12489, Berlin, Germany
| | - Andreas Luch
- German Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
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17
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Mavroudakis L, Valsami EA, Grafanaki S, Andreadaki TP, Ghanotakis DF, Pergantis SA. The effect of nitrogen starvation on membrane lipids of Synechocystis sp. PCC 6803 investigated by using easy ambient sonic-spray ionization mass spectrometry. Biochimica et Biophysica Acta (BBA) - Biomembranes 2019; 1861:183027. [DOI: 10.1016/j.bbamem.2019.07.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 07/19/2019] [Accepted: 07/22/2019] [Indexed: 01/30/2023]
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18
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Mavrakis E, Mavroudakis L, Lydakis-Simantiris N, Pergantis SA. Investigating the Uptake of Arsenate by Chlamydomonas reinhardtii Cells and its Effect on their Lipid Profile using Single Cell ICP–MS and Easy Ambient Sonic-Spray Ionization–MS. Anal Chem 2019; 91:9590-9598. [DOI: 10.1021/acs.analchem.9b00917] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Emmanouil Mavrakis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion 70013, Greece
| | - Leonidas Mavroudakis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion 70013, Greece
| | - Nikos Lydakis-Simantiris
- Laboratory of Environmental Chemistry and of Biochemical Processes, Department of Agriculture, Hellenic Mediterranean University, Chania 73133, Greece
| | - Spiros A. Pergantis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion 70013, Greece
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19
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Sofoulaki K, Kalantzi I, Machias A, Mastoraki M, Chatzifotis S, Mylona K, Pergantis SA, Tsapakis M. Metals and elements in sardine and anchovy: Species specific differences and correlations with proximate composition and size. Sci Total Environ 2018; 645:329-338. [PMID: 30029112 DOI: 10.1016/j.scitotenv.2018.07.133] [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: 04/17/2018] [Revised: 07/10/2018] [Accepted: 07/10/2018] [Indexed: 06/08/2023]
Abstract
Species - specific differences in the levels of 26 metals and elements in sardine and anchovy are investigated and the factors of proximate composition (proteins, lipids, ash) and body size (length, weight) that may affect the metal and elemental concentrations in fish are explored. Statistical analysis revealed that levels of metals and elements in fish seem to strongly depend on species. Significantly higher levels of most of the metals and elements studied have been observed in anchovy compared to sardine at each of six different sites. The observed species-specific differences in metal content could be attributed to different proximate composition and size among other factors. The significant (positive or negative) correlations found between lipids, proteins, ash, weight, length and metals or elements, suggest that higher levels of most of the metals and elements studied can be associated with lower lipid content, greater protein and ash content and smaller size.
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Affiliation(s)
- Katerina Sofoulaki
- Environmental Chemical Processes Laboratory, Chemistry Department, University of Crete, Voutes Campus, 70013 Heraklion, Crete, Greece; Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 2214, 71003 Heraklion, Crete, Greece.
| | - Ioanna Kalantzi
- Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 2214, 71003 Heraklion, Crete, Greece.
| | - Athanasios Machias
- Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, P.O. Box 712, 19013 Anavyssos, Attiki, Greece.
| | - Maria Mastoraki
- Hellenic Centre for Marine Research, Institute of Aquaculture, P.O. Box 2214, 71003 Heraklion, Crete, Greece.
| | - Stavros Chatzifotis
- Hellenic Centre for Marine Research, Institute of Aquaculture, P.O. Box 2214, 71003 Heraklion, Crete, Greece.
| | - Kyriaki Mylona
- Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 2214, 71003 Heraklion, Crete, Greece.
| | - Spiros A Pergantis
- Environmental Chemical Processes Laboratory, Chemistry Department, University of Crete, Voutes Campus, 70013 Heraklion, Crete, Greece.
| | - Manolis Tsapakis
- Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 2214, 71003 Heraklion, Crete, Greece.
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20
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Ioannou GI, Montagnon T, Kalaitzakis D, Pergantis SA, Vassilikogiannakis G. One-Pot Synthesis of Diverse γ-Lactam Scaffolds Facilitated by a Nebulizer-Based Continuous Flow Photoreactor. CHEMPHOTOCHEM 2018; 2:860-864. [PMID: 30393758 PMCID: PMC6197048 DOI: 10.1002/cptc.201800068] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Indexed: 11/11/2022]
Abstract
The use of a modified prototype continuous flow reactor (CFR) as a pivotal part of a number of versatile singlet oxygen-mediated reaction sequences is presented herein. These sequences target rapid access to structural complexity and diversity. The prototype reactor achieves high conversions and productivities by attaining large specific surface areas for these biphasic reactions. In the reactor, the reaction solution is nebulized (using either oxygen or air) and the resulting aerosol is irradiated by an LED jacket that surrounds the Pyrex reaction chamber. The one pot procedures developed herein are, according to many different criteria, both highly efficient and green. The key common intermediates and the source of both the complexity and variety of the final products are N-acyl imminium ions (NAI; protonated N-acyl enamines). The initial substrates are simple and readily accessible furans and the diverse array of products is composed of different complex γ-lactams. Many of the products are of particular interest due to their close relationships to known biologically active molecules.
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Affiliation(s)
| | - Tamsyn Montagnon
- Department of ChemistryUniversity of CreteVasilika Vouton71003CreteGreece
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21
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Ioannou GI, Montagnon T, Kalaitzakis D, Pergantis SA, Vassilikogiannakis G. Synthesis of cyclopent-2-enones from furans using a nebulizer-based continuous flow photoreactor. Org Biomol Chem 2018; 15:10151-10155. [PMID: 29177328 DOI: 10.1039/c7ob02557b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A series of hydroxycyclopent-2-enones and methoxycyclopent-2-enones have been synthesized in a single operation from simple furan substrates using an innovative continuous flow nebulizer system (NebPhotOX). Photooxygenation of the furan substrates takes place in an aerosol within the NebPhotOX system.
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Affiliation(s)
- Georgios I Ioannou
- Department of Chemistry, University of Crete, 71003 Iraklion, Crete, Greece.
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Toncelli C, Mylona K, Kalantzi I, Tsiola A, Pitta P, Tsapakis M, Pergantis SA. Silver nanoparticles in seawater: A dynamic mass balance at part per trillion silver concentrations. Sci Total Environ 2017; 601-602:15-21. [PMID: 28544887 DOI: 10.1016/j.scitotenv.2017.05.148] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 05/01/2017] [Accepted: 05/16/2017] [Indexed: 06/07/2023]
Abstract
This study investigates the dynamic processes affecting silver (Ag) nanoparticles that have been spiked into seawater at environmentally relevant concentrations (200 and 2000ngAgL-1). Seawater samples were taken at regular time intervals from multiple microcosm tanks and analysed rapidly, without any sample preparation, using a recently developed flow injection on-line dilution single particle inductively coupled plasma mass spectrometry method. Dissolution was found to be the predominant process of Ag nanoparticle transformation, with its rate being influenced by the type and thickness of the nanoparticle organic coating. More specifically the branched poly(ethyleneimine) coating provided additional stability to the 40 and 60nmAg nanoparticles that were tested, compared to the poly(vinylpyrrolidone) coated ones. At high Ag nanoparticle spiking levels and after 24h of exposure an extra Ag-containing nanoparticle peak appeared at the low range of the NP size distribution histogram. This peak corresponds to Ag-containing particles that contain Ag mass equivalent to 25-30nm Ag nanoparticles (assuming spherical shape). However, the composition and the "real" size of these particles remains unknown as the particles may have formed from the in-situ reduction of dissolved silver or they originate from other processes involving nanocrystal formation, as has been shown to occur in sewage sludge, or interaction with natural organic matter. Overall, this study provides additional insight into the physicochemical mechanisms behind Ag nanoparticle behavior in marine media.
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Affiliation(s)
- Claudio Toncelli
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion 71003, Crete, Greece; Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), PO Box 2214, Heraklion, 71003, Crete, Greece; Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Protection and Physiology, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Kyriaki Mylona
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion 71003, Crete, Greece; Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), PO Box 2214, Heraklion, 71003, Crete, Greece
| | - Ioanna Kalantzi
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), PO Box 2214, Heraklion, 71003, Crete, Greece
| | - Anastasia Tsiola
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), PO Box 2214, Heraklion, 71003, Crete, Greece; Marine Ecology Laboratory, Department of Biology, University of Crete, Voutes Campus, Heraklion 71003 Crete, Greece
| | - Paraskevi Pitta
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), PO Box 2214, Heraklion, 71003, Crete, Greece
| | - Manolis Tsapakis
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), PO Box 2214, Heraklion, 71003, Crete, Greece
| | - Spiros A Pergantis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion 71003, Crete, Greece.
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Mavroudakis L, Mavrakis E, Kouvarakis A, Pergantis SA. Determination of chlorate, perchlorate and bromate anions in water samples by microbore reversed-phase liquid chromatography coupled to sonic-spray ionization mass spectrometry. Rapid Commun Mass Spectrom 2017; 31:911-918. [PMID: 28370581 DOI: 10.1002/rcm.7866] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 03/17/2017] [Accepted: 03/23/2017] [Indexed: 06/07/2023]
Abstract
RATIONALE Sonic-spray ionization mass spectrometry (SSI-MS) has recently been shown to provide similar mass spectra to those generated by electrospray ionization mass spectrometry for a wide range of compounds, i.e. from small inorganic species to peptides, proteins and numerous other biomolecules. However, limited information about this new ionization technique, such as sensitivity, limit of detection and quantification accuracy, has been reported. In particular, its coupling to liquid chromatography needs further development and assessment, along with the introduction of a broad range of applications. METHODS A high-efficiency glass pneumatic nebulizer, used for decades for sample introduction in atomic spectrometry, was used for the SSI-MS analysis of chlorate (ClO3- ), perchlorate (ClO4- ) and bromate (BrO3- ) anions, following their separation using reversed-phase microbore high-performance liquid chromatography and tandem mass spectrometry (MS/MS) operated in selected reaction monitoring mode. RESULTS The developed and optimized microbore HPLC/SSI-MS/MS technique exhibited low limits of detection: 5.3 ng L-1 for chlorate, 10 ng L-1 for perchlorate and 33.7 ng L-1 for bromate, and provided reliable and accurate measurements of chlorate concentrations in water samples as demonstrated when comparing it with Ion Chromatography-Conductivity Detection (IC-CD), the benchmark technique for ion quantitation. CONCLUSIONS This is the first time that the use of HPLC/SSI-MS/MS has been reported for the detection and quantitation of chlorate, perchlorate and bromate in water samples. In addition, the exceptionally low LODs achieved using SSI render the technique competitive with the established and dominating electrospray ionization technique. Here, we have demonstrated that a commercially available high-efficiency glass pneumatic nebulizer can also be used, without any further modification, as an efficient gas-phase ion source. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Leonidas Mavroudakis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 71003, Greece
| | - Emmanouil Mavrakis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 71003, Greece
| | - Antonis Kouvarakis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 71003, Greece
| | - Spiros A Pergantis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 71003, Greece
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24
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Kalantzi I, Mylona K, Sofoulaki K, Tsapakis M, Pergantis SA. Arsenic speciation in fish from Greek coastal areas. J Environ Sci (China) 2017; 56:300-312. [PMID: 28571867 DOI: 10.1016/j.jes.2017.03.033] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Revised: 03/02/2017] [Accepted: 03/23/2017] [Indexed: 05/16/2023]
Abstract
Arsenic speciation analysis was conducted on fish samples (sardine and anchovy) collected from six areas along the Greek coastline, i.e. Artemisium Straits, Thermaikos Gulf, Amvrakikos Gulf, Strymonian Gulf, Thracian Sea, and Elefsina Gulf. Total arsenic levels ranging from 11.8 to 62.6mg As/kg dry weight were determined. Arsenobetaine, a non-toxic form of arsenic, was found to be the main arsenic species, present at 8.6 to 58.8mg As/kg dry weight, accounting for 67-95% of the total arsenic. Also detected in all fish samples was dimethylarsinic acid, although at considerably lower concentrations, ranging from 0.072-0.956mg As/kg dry weight. Monomethylarsonic acid was detected at low levels in all anchovy samples, and only in sardines from one area. Finally, inorganic arsenic in the form of arsenate was detected only in fish at one area, indicating the possible effect of an environmental parameter on its presence at detectable amounts. Statistical analysis revealed the environmental variables, such as salinity, total organic carbon and nitrogen, ammonium, phosphate, total phosphorus, dissolved oxygen and pressure index, are potentially correlated to As species concentrations. Furthermore, based on factor analysis, the biological parameters, such as fish weight, lipids, protein and ash content, that are correlated to As species concentrations of fish were also identified. The interrelationship of arsenobetaine and dimethylarsinic acid concentrations within each fish species was evaluated.
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Affiliation(s)
- Ioanna Kalantzi
- Institute of Oceanography, Hellenic Centre for Marine Science (HCMR), PO Box 2214, Heraklion 71003, Crete, Greece
| | - Kyriaki Mylona
- Institute of Oceanography, Hellenic Centre for Marine Science (HCMR), PO Box 2214, Heraklion 71003, Crete, Greece
| | - Katerina Sofoulaki
- Institute of Oceanography, Hellenic Centre for Marine Science (HCMR), PO Box 2214, Heraklion 71003, Crete, Greece; Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Heraklion 71003, Crete, Greece
| | - Manolis Tsapakis
- Institute of Oceanography, Hellenic Centre for Marine Science (HCMR), PO Box 2214, Heraklion 71003, Crete, Greece
| | - Spiros A Pergantis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Heraklion 71003, Crete, Greece.
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25
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Fadouloglou VE, Balomenou S, Aivaliotis M, Kotsifaki D, Arnaouteli S, Tomatsidou A, Efstathiou G, Kountourakis N, Miliara S, Griniezaki M, Tsalafouta A, Pergantis SA, Boneca IG, Glykos NM, Bouriotis V, Kokkinidis M. Unusual α-Carbon Hydroxylation of Proline Promotes Active-Site Maturation. J Am Chem Soc 2017; 139:5330-5337. [DOI: 10.1021/jacs.6b12209] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | - Stavroula Balomenou
- Institute of Molecular Biology and Biotechnology, 70013 Heraklion, Crete, Greece
- Department
of Biology, University of Crete, Voutes University Campus, 70013 Heraklion, Crete, Greece
| | - Michalis Aivaliotis
- Institute of Molecular Biology and Biotechnology, 70013 Heraklion, Crete, Greece
| | - Dina Kotsifaki
- Institute of Molecular Biology and Biotechnology, 70013 Heraklion, Crete, Greece
| | - Sofia Arnaouteli
- Department
of Biology, University of Crete, Voutes University Campus, 70013 Heraklion, Crete, Greece
| | - Anastasia Tomatsidou
- Department
of Biology, University of Crete, Voutes University Campus, 70013 Heraklion, Crete, Greece
| | - Giorgos Efstathiou
- Institute of Molecular Biology and Biotechnology, 70013 Heraklion, Crete, Greece
| | - Nikos Kountourakis
- Institute of Molecular Biology and Biotechnology, 70013 Heraklion, Crete, Greece
| | - Sofia Miliara
- Institute of Molecular Biology and Biotechnology, 70013 Heraklion, Crete, Greece
| | - Marianna Griniezaki
- Department
of Biology, University of Crete, Voutes University Campus, 70013 Heraklion, Crete, Greece
| | - Aleka Tsalafouta
- Department
of Biology, University of Crete, Voutes University Campus, 70013 Heraklion, Crete, Greece
| | - Spiros A. Pergantis
- Department
of Chemistry, University of Crete, Voutes University Campus, 70013 Heraklion, Crete, Greece
| | - Ivo G. Boneca
- Biology
and Genetics of the Bacterial Cell Wall Unit, Institut Pasteur, 75015 Paris, France
- INSERM, Equipe Avenir, Paris, France
| | - Nicholas M. Glykos
- Department
of Molecular Biology and Genetics, Democritus University of Thrace, University Campus, 68100 Alexandroupolis, Greece
| | - Vassilis Bouriotis
- Institute of Molecular Biology and Biotechnology, 70013 Heraklion, Crete, Greece
- Department
of Biology, University of Crete, Voutes University Campus, 70013 Heraklion, Crete, Greece
| | - Michael Kokkinidis
- Institute of Molecular Biology and Biotechnology, 70013 Heraklion, Crete, Greece
- Department
of Biology, University of Crete, Voutes University Campus, 70013 Heraklion, Crete, Greece
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26
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Ioannou GI, Montagnon T, Kalaitzakis D, Pergantis SA, Vassilikogiannakis G. A Novel Nebulizer-Based Continuous Flow Reactor: Introducing the Use of Pneumatically Generated Aerosols for Highly Productive Photooxidations. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201600054] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Georgios I. Ioannou
- Department of Chemistry; University of Crete, Vasilika Vouton; 71003 Iraklion Crete Greece
| | - Tamsyn Montagnon
- Department of Chemistry; University of Crete, Vasilika Vouton; 71003 Iraklion Crete Greece
| | - Dimitris Kalaitzakis
- Department of Chemistry; University of Crete, Vasilika Vouton; 71003 Iraklion Crete Greece
| | - Spiros A. Pergantis
- Department of Chemistry; University of Crete, Vasilika Vouton; 71003 Iraklion Crete Greece
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27
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Huynh KA, Siska E, Heithmar E, Tadjiki S, Pergantis SA. Detection and Quantification of Silver Nanoparticles at Environmentally Relevant Concentrations Using Asymmetric Flow Field–Flow Fractionation Online with Single Particle Inductively Coupled Plasma Mass Spectrometry. Anal Chem 2016; 88:4909-16. [DOI: 10.1021/acs.analchem.6b00764] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Khanh An Huynh
- National Research Council Post-Doctoral Associate at U.S. Environmental Protection Agency, National Exposure Research Laboratory, Exposure Methods and Measurement Divison, Environmental Chemistry Branch, 944 East Harmon Avenue, Las Vegas, Nevada 89119, United States
| | - Emily Siska
- Chemistry Department, University of Nevada Las Vegas, 4505 Maryland Parkway, Las Vegas, Nevada 89154, United States
| | - Edward Heithmar
- U.S. Environmental Protection Agency, National Exposure Research Laboratory, Exposure Methods and Measurement Divison, Environmental Chemistry Branch, 944 East Harmon Avenue, Las Vegas, Nevada 89119, United States
| | - Soheyl Tadjiki
- Postnova Analytics Inc, Salt Lake
City, Utah 84102, United States
| | - Spiros A. Pergantis
- Environmental Chemical Processes Laboratory,
Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 71003, Greece
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28
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Tziaras T, Pergantis SA, Stephanou EG. Investigating the Occurrence and Environmental Significance of Methylated Arsenic Species in Atmospheric Particles by Overcoming Analytical Method Limitations. Environ Sci Technol 2015; 49:11640-8. [PMID: 26335501 DOI: 10.1021/acs.est.5b02328] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A novel analytical method has been developed for the determination of all five arsenic species known to exist in atmospheric particulate matter (PM), i.e., the inorganic arsenite iAs(III) and arsenate iAs(V), and the methylated methylarsonate (MA), dimethylarsinate (DMA) and trimethylarsine oxide (TMAO). Although the methylated species were first detected in PM in the late 1970s, most of the recent studies focus mainly on the two inorganic As species, ignoring TMAO in particular. In the present study, an HPLC (with an anion and cation exchange column connected in series)-arsine generation-ICP-MS system provided complete separation of all five As species and limits of detection from 10 to 25 pg As mL(-1). This method was applied to analyze water extracts of the inhalable fraction of atmospheric PM (PM10, PM2.5 and PM2.1). 81 samples were collected, most during Saharan dust events, from a semirural area, and analyzed. The total water extractable arsenic ranged from 0.03 to 0.7 ng of As m(-3), values that are representative for remote areas. iAs(V) was the most abundant species followed by TMAO, DMA, iAs(III) and MA. None of the As species showed any particular trend with the presence or intensity of dust events, or seasonality, except for TMAO, which showed higher concentrations during the colder months.
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Affiliation(s)
- Thrasyvoulos Tziaras
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus , Heraklion 71003, Greece
| | - Spiros A Pergantis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus , Heraklion 71003, Greece
| | - Euripides G Stephanou
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus , Heraklion 71003, Greece
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29
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Kalantzi I, Pergantis SA, Black KD, Shimmield TM, Papageorgiou N, Tsapakis M, Karakassis I. Metals in tissues of seabass and seabream reared in sites with oxic and anoxic substrata and risk assessment for consumers. Food Chem 2015; 194:659-70. [PMID: 26471605 DOI: 10.1016/j.foodchem.2015.08.072] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 07/10/2015] [Accepted: 08/19/2015] [Indexed: 11/29/2022]
Abstract
Twenty-eight metals and elements were measured in the muscle, liver, gills, bone and intestine of farmed seabass and gilthead seabream from four Mediterranean fish farms. The influence of fish species and the effect of environmental conditions on the metal accumulation in fish tissues was investigated. Most concentrations were lower in muscle and higher in liver and bone than in other body tissues. Seabass accumulates more elements in its tissues than seabream. Fish reared in coarse, oxic sites accumulate more elements with higher concentrations in muscle, bone and intestine and with lower concentrations in liver and gills than fish reared in silty, anoxic sites. This may be attributed to feed type and sediment properties. According to the metal pollution index, hazard quotient, selenium health benefit values, carcinogenic risk of arsenic, maximum safe consumption and the permitted limits, the consumption of both farmed species should be considered as safe for human health.
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Affiliation(s)
- I Kalantzi
- Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece.
| | - S A Pergantis
- Chemistry Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece
| | - K D Black
- Scottish Association for Marine Science, Scottish Marine Institute, Oban PA34 1QA, Scotland, United Kingdom
| | - T M Shimmield
- Scottish Association for Marine Science, Scottish Marine Institute, Oban PA34 1QA, Scotland, United Kingdom
| | - N Papageorgiou
- Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece
| | - M Tsapakis
- Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 2214, 71003 Heraklion, Crete, Greece
| | - I Karakassis
- Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece
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Ramkorun-Schmidt B, Pergantis SA, Esteban-Fernández D, Jakubowski N, Günther D. Investigation of a Combined Microdroplet Generator and Pneumatic Nebulization System for Quantitative Determination of Metal-Containing Nanoparticles Using ICPMS. Anal Chem 2015. [DOI: 10.1021/acs.analchem.5b01604] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Benita Ramkorun-Schmidt
- School
of Analytical Sciences Adlershof, Humboldt-Universitaet zu Berlin, Brook-Taylor
Strasse 2, 12489, Berlin, Germany
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter Strasse
11, 12489, Berlin, Germany
| | - Spiros A. Pergantis
- Environmental
Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion 71003, Greece
| | - Diego Esteban-Fernández
- School
of Analytical Sciences Adlershof, Humboldt-Universitaet zu Berlin, Brook-Taylor
Strasse 2, 12489, Berlin, Germany
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter Strasse
11, 12489, Berlin, Germany
| | - Norbert Jakubowski
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter Strasse
11, 12489, Berlin, Germany
| | - Detlef Günther
- ETH Zurich, Department of Chemistry and Applied
Biosciences, Laboratory of Inorganic Chemistry, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland
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31
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Kokarnig S, Tsirigotaki A, Wiesenhofer T, Lackner V, Francesconi KA, Pergantis SA, Kuehnelt D. Concurrent quantitative HPLC-mass spectrometry profiling of small selenium species in human serum and urine after ingestion of selenium supplements. J Trace Elem Med Biol 2015; 29:83-90. [PMID: 25063689 DOI: 10.1016/j.jtemb.2014.06.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [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: 05/13/2014] [Revised: 06/24/2014] [Accepted: 06/25/2014] [Indexed: 02/07/2023]
Abstract
Selenium metabolic patterns in the human body originating from five distinct selenium dietary sources, selenate, selenite, selenomethionine (SeMet), methylselenocysteine (MeSeCys) and selenized yeast, were investigated by performing concurrent HPLC-mass spectrometric analysis of human serum and urine. Total selenium and selenium species time profiles were generated by sampling and analyzing serum and urine from volunteers treated with selenium supplements, up to 5 and 24h following ingestion, respectively. We found that an increase in total serum selenium levels, accompanied by elevated selenium urinary excretion, was the common pattern for all treatments, except for that of selenite supplementation. Selenosugar 1 was a universal serum metabolite in all treatments, indicating that ingested selenium is favorably metabolized to the sugar. Except for selenite and selenized yeast ingestion, these patterns were reflected in the urine time series of the different treatments. Selenosugar 1 was the major selenium species present in urine in all treatments except for the selenate treatment, accounting for about 80% of the identified excreted species within 24h of ingestion. Furthermore, the urinary metabolite trimethylselenonium ion (TMSe) was detected for the first time in human background serum by using HPLC coupled to elemental and molecular mass spectrometry. The concurrent monitoring of non-protein selenium species in both body fluids provides the relation between bioavailability and excretion of the individual ingested species and of their metabolic products, while the combined use of elemental and molecular mass spectrometry enables the accurate quantitation of structurally confirmed species. This successfully applied approach is anticipated to be a useful tool for more extensive future studies into human selenium metabolism.
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Affiliation(s)
- Sabine Kokarnig
- University of Graz, Institute of Chemistry, Analytical Chemistry, NAWI Graz, Universitaetsplatz 1, A-8010 Graz, Austria
| | - Alexandra Tsirigotaki
- University of Crete, Department of Chemistry, Voutes Campus, GR-71003 Heraklion, Crete, Greece
| | - Tanja Wiesenhofer
- University of Graz, Institute of Chemistry, Analytical Chemistry, NAWI Graz, Universitaetsplatz 1, A-8010 Graz, Austria
| | - Verena Lackner
- University of Graz, Buero für ArbeitnehmerInnenschutz und Sicherheit, Halbaerthgasse 6, A-8010 Graz, Austria
| | - Kevin A Francesconi
- University of Graz, Institute of Chemistry, Analytical Chemistry, NAWI Graz, Universitaetsplatz 1, A-8010 Graz, Austria
| | - Spiros A Pergantis
- University of Crete, Department of Chemistry, Voutes Campus, GR-71003 Heraklion, Crete, Greece
| | - Doris Kuehnelt
- University of Graz, Institute of Chemistry, Analytical Chemistry, NAWI Graz, Universitaetsplatz 1, A-8010 Graz, Austria.
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Kanaki K, Pergantis SA. Use of 3-nitrobenzonitrile as an additive for improved sensitivity in sonic-spray ionization mass spectrometry. Rapid Commun Mass Spectrom 2014; 28:2661-2669. [PMID: 25366412 DOI: 10.1002/rcm.7064] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 09/23/2014] [Accepted: 09/23/2014] [Indexed: 06/04/2023]
Abstract
RATIONALE Sonic-spray ionization (SSI) has been shown to produce gas-phase ions for a wide range of compounds, without the application of voltage or a laser. However, it remains to be shown that it can also provide similar sensitivities to those obtained by electrospray ionization mass spectrometry (ESI-MS). METHODS Here we report on an attempt to further improve the sensitivity of SSI-MS, more specifically a version of SSI that is referred to as Venturi easy ambient sonic-spray ionization (V-EASI) MS, by adding a signal-enhancing additive to the sample solution. The additive used is 3-nitrobenzonitrile (3-NBN), which has recently been used with success in a new ionization approach named matrix-assisted ionization vacuum. In order to conduct this study we have analyzed a range of compounds, including peptides, metalloproteins, and some organometalloids. During the V-EASI-MS analyses molecular ion and protonated molecule signal intensities as well as their corresponding signal-to-noise (S/N) ratios, obtained in the presence and absence of the 3-NBN, were compared. RESULTS The 3-NBN-assisted V-EASI-MS approach developed here provides significant improvement in sensitivity relative to conventional V-EASI-MS for almost all compounds tested. More specifically, for peptides a 1.6- to 4-fold enhancement was realized, for proteins the enhancements were from 2- to 5-fold, and for some metalloid species enhancements reached up to 10-fold. However, optimum additive concentration and ion transfer capillary temperature were found to be compound-dependent and thus require optimization in order for maximum enhancements to be achieved. In most cases the 3-NBN-assisted V-EASI-MS approach provides comparable sensitivities and S/N ratios to ESI-MS on the same ion trap mass spectrometer. CONCLUSIONS The use of 3-NBN with V-EASI-MS gives rise to a novel 3-NBN-assisted MS technique, which has demonstrated considerable signal enhancement for most of the compounds analyzed, thus improving its competitiveness towards the well-established and dominating ESI-MS technique.
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Affiliation(s)
- Katerina Kanaki
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 71003, Greece
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Letsiou S, Nomikos T, Panagiotakos DB, Pergantis SA, Fragopoulou E, Pitsavos C, Stefanadis C, Antonopoulou S. Gender-specific distribution of selenium to serum selenoproteins: associations with total selenium levels, age, smoking, body mass index, and physical activity. Biofactors 2014; 40:524-35. [PMID: 25185791 DOI: 10.1002/biof.1176] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [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] [Indexed: 11/09/2022]
Abstract
The epidemiology of selenium (Se) is mainly based on the determination of total serum selenium levels (TSe) which by many aspects is an inadequate marker of Se status. In this study we applied a recently developed LC-ICP-MS method, for the determination of the selenium content of the three main serum selenium-containing proteins, in a subcohort of the ATTICA study. This enables us to investigate whether the selenium distribution to selenoproteins may correlate with demographic (age, gender) and lifestyle variables (smoking, physical activity) that are crucial for the development of chronic diseases. A sub-sample from the ATTICA Study, consisted of 236 males (40 ± 11 years) and 163 females (38 ± 12 years), was selected. The selenium content of glutathione peroxidase (GPx-3), selenoprotein P (SelP) and selenoalbumin (SeAlb) was determined in serum by LC-ICP/MS method. We found that 26% of TSe is found in GPx-3, 61% in SelP and 13% in SeAlb. We have assessed the different ratios of selenoproteins' selenium content (Se-GPX-3/Se-SelP, Se-GPX-3/Se-SeAlb, Se-SelP/Se-SeAlb), showing that people with similar TSe may have different distribution of this selenium to selenoproteins. Total selenium levels and gender are the variables that mostly affect selenium distribution to selenoproteins while age, smoking, physical activity and BMI do not significantly influence selenium distribution. In conclusion, the simultaneous determination of the selenium content of serum selenium-containing selenoproteins is necessary for a thorough estimation of selenium status. The ratio of the Se content between selenoproteins may be proven a novel, valid marker of selenium status.
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Affiliation(s)
- S Letsiou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece; Department of Chemistry, University of Crete, Heraklio, Crete, Greece
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34
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Kalantzi I, Papageorgiou N, Sevastou K, Black KD, Pergantis SA, Karakassis I. Metals in benthic macrofauna and biogeochemical factors affecting their trophic transfer to wild fish around fish farm cages. Sci Total Environ 2014; 470-471:742-753. [PMID: 24184551 DOI: 10.1016/j.scitotenv.2013.10.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 06/06/2013] [Revised: 10/02/2013] [Accepted: 10/06/2013] [Indexed: 06/02/2023]
Abstract
Benthic macroinvertebrates and wild fish aggregating in the vicinity of four Mediterranean fish farms were sampled. Concentrations of metals and other elements were measured in macrofaunal taxa and in fish tissues (muscle, liver, gills, bone, gonad, stomach, intestine, and stomach content). Biological and geochemical characteristics play an important role in metal accumulation in benthic invertebrates, and consequently in metal transfer to higher trophic levels. Macroinvertebrates accumulated lower concentrations of most metals and elements than their respective sediment, except As, P, Na, Zn and Cd. Elemental concentrations of benthic organisms increased with increasing sediment metal content, except Cd, and with % silt, refractory organic matter and chlorophyll-a of sediment due to the influence of sediment geochemistry on metal bioavailability. Tolerant species were found to accumulate higher concentrations of most metals and elements, except for Cd, than equilibrium species. The ecological and morphological characteristics of the benthic invertebrates can affect the bioaccumulation of metals and elements in macrobenthos. Hg and P were found to increase their concentrations from zoobenthos to wild fish aggregating around fish cages feeding on macrofauna.
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Affiliation(s)
- I Kalantzi
- Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece
| | - N Papageorgiou
- Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece
| | - K Sevastou
- Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece; Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 2214, 71003 Heraklion, Crete, Greece
| | - K D Black
- Scottish Association for Marine Science, Scottish Marine Institute, Oban PA34 1QA, Scotland, United Kingdom
| | - S A Pergantis
- Chemistry Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece
| | - I Karakassis
- Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece.
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35
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Tsikalas GK, Lazarou P, Klontzas E, Pergantis SA, Spanopoulos I, Trikalitis PN, Froudakis GE, Katerinopoulos HE. A “turn-on”–turning-to-ratiometric sensor for zinc(ii) ions in aqueous media. RSC Adv 2014. [DOI: 10.1039/c3ra45796f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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36
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Pell A, Kokkinis G, Malea P, Pergantis SA, Rubio R, López-Sánchez JF. LC-ICP-MS analysis of arsenic compounds in dominant seaweeds from the Thermaikos Gulf (Northern Aegean Sea, Greece). Chemosphere 2013; 93:2187-94. [PMID: 24016626 DOI: 10.1016/j.chemosphere.2013.08.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [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: 04/02/2013] [Revised: 08/01/2013] [Accepted: 08/04/2013] [Indexed: 06/02/2023]
Abstract
The content of total arsenic and arsenic compounds in the dominant seaweed species in the Thermaikos Gulf, Northern Aegean Sea was determined in samples collected in different seasons. Total arsenic was determined by acid digestion followed by ICP-MS. Arsenic speciation was analyzed by water extraction followed by LC-ICP-MS. Total arsenic concentrations in the seaweeds ranged from 1.39 to 55.0 mg kg(-1). Cystoseira species and Codium fragile showed the highest total As contents, while Ulva species (U. intestinalis, U. rigida,U. fasciata) had the lowest Arsenosugars, the most common arsenic species in seaweeds, were found in all samples, and glycerol-arsenosugar was the most common form; however, phosphate-arsenosugar and sulfate-arsenosugar were also present. Inorganic arsenic was measured in seven algae species and detected in another. Arsenate was the most abundant species in Cystoseira barbata (27.0 mg kg(-1)). Arsenobetaine was measured in only one sample. Methylated arsenic species were measured at very low concentrations. The information should contribute to further understanding the presence of arsenic compounds in dominant seaweeds from the Thermaikos Gulf.
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Affiliation(s)
- Albert Pell
- Department of Analytical Chemistry, Universitat de Barcelona, ES-08028, Barcelona, Spain
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37
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Kalantzi I, Black KD, Pergantis SA, Shimmield TM, Papageorgiou N, Sevastou K, Karakassis I. Metals and other elements in tissues of wild fish from fish farms and comparison with farmed species in sites with oxic and anoxic sediments. Food Chem 2013; 141:680-94. [DOI: 10.1016/j.foodchem.2013.04.049] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 03/23/2013] [Accepted: 04/15/2013] [Indexed: 12/01/2022]
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38
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Antonakis MM, Tsirigotaki A, Kanaki K, Milios CJ, Pergantis SA. Bipolar mass spectrometry of labile coordination complexes, redox active inorganic compounds, and proteins using a glass nebulizer for sonic-spray ionization. J Am Soc Mass Spectrom 2013; 24:1250-1259. [PMID: 23761045 DOI: 10.1007/s13361-013-0668-z] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 04/08/2013] [Accepted: 04/30/2013] [Indexed: 06/02/2023]
Abstract
In this study, we report on the development of a novel nebulizer configuration for sonic-spray ionization (SSI) mass spectrometry (MS), more specifically for a version of SSI that is referred to as Venturi easy ambient sonic-spray ionization (V-EASI) MS. The developed nebulizer configuration is based on a commercially available pneumatic glass nebulizer that has been used extensively for aerosol formation in atomic spectrometry. In the present study, the nebulizer was modified in order to achieve efficient V-EASI-MS operation. Upon evaluating this system, it has been demonstrated that V-EASI-MS offers some distinct advantages for the analysis of coordination compounds and redox active inorganic compounds over the predominantly used electrospray ionization (ESI) technique. Such advantages, for this type of compounds, are demonstrated here for the first time. More specifically, a series of labile heptanuclear heterometallic [Cu(II) 6Ln(III)] clusters held together with artificial amino acid ligands, in addition to easily oxidized inorganic oxyanions of selenium and arsenic, were analyzed. The observed advantages pertain to V-EASI appearing to be a "milder" ionization source than ESI, not requiring electrical potentials for gas phase ion formation, thus eliminating the possibility of unwanted redox transformations, allowing for the "simultaneous" detection of negative and positive ions (bipolar analysis) without the need to change source ionization conditions, and also not requiring the use of syringes and delivery pumps. Because of such features, especially because of the absence of ionization potentials, EASI can be operated with minimal requirements for source parameter optimization. We observed that source temperature and accelerating voltage do not seem to affect labile compounds to the extent they do in ESI-MS. In addition, bipolar analysis of proteins was demonstrated here by acquiring both positive and negative ion mass spectra from the same protein solutions, without the need to independently adjust solution and source conditions in each mode. Finally, the simple and efficient operation of a dual-nebulizer configuration was demonstrated for V-EASI-MS for the first time.
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Affiliation(s)
- Manolis M Antonakis
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion, 71003, Greece
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39
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Kalantzi I, Shimmield TM, Pergantis SA, Papageorgiou N, Black KD, Karakassis I. Heavy metals, trace elements and sediment geochemistry at four Mediterranean fish farms. Sci Total Environ 2013; 444:128-137. [PMID: 23268141 DOI: 10.1016/j.scitotenv.2012.11.082] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 11/19/2012] [Accepted: 11/24/2012] [Indexed: 06/01/2023]
Abstract
Trace element concentrations in sediment were investigated at four fish farms in the Eastern Mediterranean Sea. Fish farms effects were negligible beyond 25-50 m from the edge of the cages. Based on elemental distribution, sediments from the farms were separated into coarse oxidized and silty reduced ones. Fish feed is richer in P, Zn and Cd than reference and impacted stations. Comparison among impacted stations and the respective reference stations shows that, in anoxic sediments, all elements had higher concentrations at the impacted stations than at reference stations while in oxic sediments, many elemental concentrations were lower at impacted stations than at reference stations. The behavior of elements and therefore their distribution is affected by changes in sediment grain size, organic content and redox regime. Elements in sediments around fish farms can be clustered into five groups according to these environmental variables. In silty and anoxic sediments, element concentrations were higher than in coarse and oxic ones. Several approaches were used to assess potential sediment toxicity (enrichment factors, geoaccumulation indices, contamination factors) as well as to assess the potential danger to aquatic life (Sediment Quality Guidelines, SQG). Cu, Zn and Fe can cause from threshold to extreme effects on aquatic life in anoxic, fine-grained sediments and As can cause threshold effects in all types of sediment around fish farms. Other elements (Cr, Pb, Mn) can also cause unwanted effects when compounded with elevated background levels.
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Affiliation(s)
- I Kalantzi
- Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece
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40
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Orfanakis A, Hatzakis E, Kanaki K, Pergantis SA, Rizos A, Dais P. Characterization of Polyglycerol Polyricinoleate Formulations Using NMR Spectroscopy, Mass Spectrometry and Dynamic Light Scattering. J AM OIL CHEM SOC 2012. [DOI: 10.1007/s11746-012-2137-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Pergantis SA, Jones-Lepp TL, Heithmar EM. Hydrodynamic Chromatography Online with Single Particle-Inductively Coupled Plasma Mass Spectrometry for Ultratrace Detection of Metal-Containing Nanoparticles. Anal Chem 2012; 84:6454-62. [DOI: 10.1021/ac300302j] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Spiros A. Pergantis
- U.S. Environmental Protection Agency, National Exposure
Research Laboratory, Environmental Sciences Division,
944 E. Harmon Avenue, Las Vegas, Nevada 89119, United States
| | - Tammy L. Jones-Lepp
- U.S. Environmental Protection Agency, National Exposure
Research Laboratory, Environmental Sciences Division,
944 E. Harmon Avenue, Las Vegas, Nevada 89119, United States
| | - Edward M. Heithmar
- U.S. Environmental Protection Agency, National Exposure
Research Laboratory, Environmental Sciences Division,
944 E. Harmon Avenue, Las Vegas, Nevada 89119, United States
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42
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Lu Y, Rumpler A, Francesconi KA, Pergantis SA. Quantitative selenium speciation in human urine by using liquid chromatography–electrospray tandem mass spectrometry. Anal Chim Acta 2012; 731:49-59. [DOI: 10.1016/j.aca.2012.04.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2012] [Revised: 04/10/2012] [Accepted: 04/12/2012] [Indexed: 10/28/2022]
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43
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Sopasis GJ, Canaj AB, Philippidis A, Siczek M, Lis T, O’Brien JR, Antonakis MM, Pergantis SA, Milios CJ. Heptanuclear Heterometallic [Cu6Ln] Clusters: Trapping Lanthanides into Copper Cages with Artificial Amino Acids. Inorg Chem 2012; 51:5911-8. [DOI: 10.1021/ic300538q] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- George J. Sopasis
- Department
of Chemistry, The University of Crete,
Voutes, 71003, Herakleion,
Greece
- Department of Materials
Science
and Technology, The University of Crete, Voutes, 71003, Herakleion, Greece
| | - Angelos B. Canaj
- Department
of Chemistry, The University of Crete,
Voutes, 71003, Herakleion,
Greece
| | - Aggelos Philippidis
- Institute of Electronic Structure
and Laser, Foundation for Research and Technology-Hellas (IESL-FORTH), P.O. Box 1385, GR 711 10 Herakleion, Crete,
Greece
| | - Milosz Siczek
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, 50-383 Wroclaw,
Poland
| | - Tadeusz Lis
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, 50-383 Wroclaw,
Poland
| | | | - Manolis M. Antonakis
- Department
of Chemistry, The University of Crete,
Voutes, 71003, Herakleion,
Greece
| | - Spiros A. Pergantis
- Department
of Chemistry, The University of Crete,
Voutes, 71003, Herakleion,
Greece
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44
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Lai VWM, Kanaki K, Pergantis SA, Cullen WR, Reimer KJ. Arsenic speciation in freshwater snails and its life cycle variation. ACTA ACUST UNITED AC 2012; 14:743-51. [DOI: 10.1039/c2em10764c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Voutsadaki S, Tsikalas GK, Klontzas E, Froudakis GE, Pergantis SA, Demadis KD, Katerinopoulos HE. A cyclam-type “turn on” fluorescent sensor selective for mercury ions in aqueous media. RSC Adv 2012. [DOI: 10.1039/c2ra20971c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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46
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Letsiou S, Lu Y, Nomikos T, Antonopoulou S, Panagiotakos D, Pitsavos C, Stefanadis C, Pergantis SA. High-throughput quantification of selenium in individual serum proteins from a healthy human population using HPLC on-line with isotope dilution inductively coupled plasma-MS. Proteomics Clin Appl 2011. [DOI: 10.1002/prca.201190006] [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: 11/07/2022]
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47
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Letsiou S, Lu Y, Nomikos T, Antonopoulou S, Panagiotakos D, Pitsavos C, Stefanadis C, Pergantis SA. High-throughput quantification of selenium in individual serum proteins from a healthy human population using HPLC on-line with isotope dilution inductively coupled plasma-MS. Proteomics 2011; 10:3447-57. [PMID: 20827730 DOI: 10.1002/pmic.200900677] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
In this study, a method, based on dual column affinity chromatography hyphenated to isotope dilution inductively coupled plasma-quadrupole MS, was developed for selenium determination in selenoprotein P, glutathione peroxidase, and selenoalbumin in human serum samples from a group of healthy volunteers (n=399). Method improvement was achieved using methanol-enhanced isotope dilution which resulted in improved sensitivity and removal of isobaric interferences. Although no human serum reference materials are currently certified for their selenium species levels, method development was conducted using human serum reference material BCR 637 and 639 as their Se species content has been reported in the previous studies, and thus comparisons were possible. The mean selenium concentrations determined for the 399 healthy volunteer serum samples were 23 ± 10 ng Se mL(-1) for glutathione peroxidase, 49 ± 15 ng Se mL(-1) for selenoprotein P and 11 ± 4 ng Se mL(-1) for selenoalbumin. These values are found to be in close agreement with published values for a limited number of healthy volunteer samples, and to establish baseline Se levels in serum proteins for an apparently healthy group of individuals, thus allowing for subsequent comparisons with respective values determined for groups of individuals with selenium related health issues, as well as assist in the discovery of potential selenium biomarkers. Also, the relationship between Se serum protein levels and some anthropometric characteristics of the volunteer population were investigated. Additionally, further development of the analytical method used in this study was achieved by adding a size exclusion chromatography column after the two affinity columns via a switching valve. This allowed for the separation of small selenium-containing molecules from glutathione peroxidase and thus enhanced the overall confidence in its identification.
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Affiliation(s)
- Sophia Letsiou
- Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Crete, Greece
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48
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Orfanoudaki M, Tamiolakis I, Siczek M, Lis T, Armatas GS, Pergantis SA, Milios CJ. Unique trigonal prism encapsulated Ln complexes: a [CoII6Eu] and a [CoII6Dy] cage. Dalton Trans 2011; 40:4793-6. [DOI: 10.1039/c1dt10052a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Letsiou S, Nomikos T, Panagiotakos D, Pergantis SA, Fragopoulou E, Antonopoulou S, Pitsavos C, Stefanadis C. Dietary habits of Greek adults and serum total selenium concentration: the ATTICA study. Eur J Nutr 2010; 49:465-72. [PMID: 20386916 DOI: 10.1007/s00394-010-0105-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [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: 10/22/2009] [Accepted: 03/24/2010] [Indexed: 11/25/2022]
Abstract
PURPOSE The trace element selenium is an essential micronutrient for human health, and its low levels in serum are implicated in the pathogenesis of several chronic diseases. The determination of total serum selenium levels may contribute to the assessment of the health status of all populations. Since the serum selenium levels are highly affected by diet, we assessed its association with the dietary habits of Greek adults. METHODS Serum selenium levels were determined with inductively coupled plasma mass spectrometry in a cohort of 506 participants (men: 296, women: 210) aged 18-75 from the ATTICA study. Food consumption was evaluated with a validated food-frequency questionnaire. RESULTS Evaluation of the relationship between serum total selenium with major food groups and beverages by multi-adjusted analysis revealed that serum selenium was positively correlated with the consumption of red meat (2.37 ± 0.91, p = 0.01) while the consumption of other selenium-containing foods (i.e., fish, cereals, dairy products, vegetables) did not demonstrate such a relationship. Moreover, principal component analysis revealed that the adoption of a vegetarian type of diet is inversely correlated with total selenium (-3.94 ± 2.28, p = 0.08). CONCLUSIONS Among the dietary habits that were examined, red meat seems to be the major determinant of serum selenium in Greek adults.
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Affiliation(s)
- S Letsiou
- Department of Science of Nutrition-Dietetics, Harokopio University, Athens, Greece
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50
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Hansen C, Tsirigotaki A, Bak SA, Pergantis SA, Stürup S, Gammelgaard B, Hansen HR. Elevated antimony concentrations in commercial juices. ACTA ACUST UNITED AC 2010; 12:822-4. [PMID: 20383361 DOI: 10.1039/b926551a] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Antimony concentrations up to a factor of 2.7 above the EU limit for drinking water were found in commercial juices and may either be leached from the packaging material or introduced during manufacturing, pointing out the need for further research on the area.
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Affiliation(s)
- Claus Hansen
- University of Copenhagen, Department of Pharmaceutics and Analytical Chemistry, Universitetsparken 2, Copenhagen Ø, Denmark.
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