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Amerikanou C, Valsamidou E, Karavoltsos S, Tagkouli D, Sakellari A, Kontou M, Houhoula D, Kalogeropoulos N, Zoumpoulakis P, Kaliora AC. Circulating Copper Is Associated with Inflammatory Biomarkers in Greek Older Adults with Osteoarthritis. Biol Trace Elem Res 2024; 202:1866-1877. [PMID: 37608129 PMCID: PMC10954846 DOI: 10.1007/s12011-023-03801-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 08/02/2023] [Indexed: 08/24/2023]
Abstract
Osteoarthritis (OA) is the most common form of arthritis, that causes a significant decrease in the quality of life of the afflicted and constitutes a great burden for the socioeconomic system. Trace elements and heavy metals are implicated in the pathophysiology of OA, exacerbating inflammatory and oxidative stress responses. The aim of this cross-sectional study was to quantify metals in plasma samples of Greek OA patients and explore their link with disease related parameters, health status or quality of life, as well as epigenetic OA markers. This is the first study on plasma metal levels in Greek knee OA patients. To achieve precision in plasma metal and miRNA measurements, high-quality samples were selected from a subset of 34 participants (NCT04783792). Demographic, quality of life, clinical, biochemical, inflammation, oxidative stress, and anthropometric parameters, as well as microRNA levels were assessed. Significant correlations were found between circulating metals with OA related parameters or with measured microRNAs. Also, significant positive associations between plasma copper (Cu) levels and CRP (p = 0.033) or IL-6 (p = 0.001) occurred when adjusting for age, gender, BMI, physical activity level, smoking, disease severity, total arthroplasty, and dietary intake of the respective metal. Cu's role in OA is bidirectional, and this study confirms the findings that in OA, Cu is positively associated with inflammation. Such relationships between lifestyle, environment and OA enhance our understanding and encourage further study on metals related to OA inflammation.
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Affiliation(s)
- Charalampia Amerikanou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, 70 El. Venizelou Ave, 17676, Athens, Greece
| | - Evdokia Valsamidou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, 70 El. Venizelou Ave, 17676, Athens, Greece
| | - Sotirios Karavoltsos
- Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784, Athens, Greece
| | - Dimitra Tagkouli
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, 70 El. Venizelou Ave, 17676, Athens, Greece
| | - Aikaterini Sakellari
- Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784, Athens, Greece
| | - Maria Kontou
- TheraCell Advanced Biotechnologies, 14564, Kifissia, Greece
| | | | - Nick Kalogeropoulos
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, 70 El. Venizelou Ave, 17676, Athens, Greece
| | - Panagiotis Zoumpoulakis
- Department of Food Science and Technology, University of West Attica, Ag. Spyridonos, 12243, Egaleo, Athens, Greece
| | - Andriana C Kaliora
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, 70 El. Venizelou Ave, 17676, Athens, Greece.
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Amerikanou C, Kleftaki SA, Karavoltsos S, Tagkouli D, Sakellari A, Valsamidou E, Gioxari A, Kalogeropoulos N, Kaliora AC. Vanadium, cobalt, zinc, and rubidium are associated with markers of inflammation and oxidative stress in a Greek population with obesity. Front Endocrinol (Lausanne) 2023; 14:1265310. [PMID: 38075040 PMCID: PMC10703041 DOI: 10.3389/fendo.2023.1265310] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 11/06/2023] [Indexed: 12/18/2023] Open
Abstract
Introduction The prevalence of obesity is rising globally, with negative effects on the socioeconomic system. As a result of its drivers which include low-grade chronic inflammation, oxidative stress, and fatty acid metabolism, this phenotype develops metabolic anomalies that exacerbate its pathogenesis. It has been discovered that metals and metalloids have substantial effects on both the immune system and metabolism and are influenced by factors connected to obesity. Although there is a known connection between metals, obesity, and related metabolic disorders, it is still under research. Methods We determined the plasma levels of 16 metals and metalloids in 76 individuals with obesity and investigated the relationships with inflammatory and oxidative stress biomarkers in order to clarify the processes by which metals/metalloids exhibit their effects. Results After adjusting for age, gender, BMI, physical activity level, smoking, the existence of metabolic abnormalities, and dietary intake of the corresponding metal, regression analysis revealed the following statistically significant associations; vanadium was negatively associated with oxLDL (Beta ± SE= -0.014 ± 0.005, p=0.007), zinc was negatively associated with leptin (Beta ± SE= -12.390 ± 5.226, p=0.025), cobalt was associated negatively with adiponectin (Beta ± SE= -0.030 ± 0.012, p=0.001) and positively with MPO (Beta ± SE= 0.002 ± 0.001, p=0.023), and rubidium was negatively associated with oxLDL (Beta ± SE= -1.139 ± 0.411, p=0.008) and positively with MPO (Beta ± SE= 0.324 ± 0.102, p=0.003). Discussion The aforementioned associations highlight the need for further research, demonstrating the importance of inflammation and oxidative stress in the association between metals/metalloids and obesity-related metabolic abnormalities.
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Affiliation(s)
- Charalampia Amerikanou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
| | - Stamatia-Angeliki Kleftaki
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
| | - Sotirios Karavoltsos
- Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitra Tagkouli
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
| | - Aikaterini Sakellari
- Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Evdokia Valsamidou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
| | - Aristea Gioxari
- Department of Nutritional Science and Dietetics, School of Health Science, University of the Peloponnese, Kalamata, Greece
| | - Nick Kalogeropoulos
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
| | - Andriana C. Kaliora
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
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Lantzouraki DZ, Amerikanou C, Karavoltsos S, Kafourou V, Sakellari A, Tagkouli D, Zoumpoulakis P, Makris DP, Kalogeropoulos N, Kaliora AC. Artemisia arborescens and Artemisia inculta from Crete; Secondary Metabolites, Trace Metals and In Vitro Antioxidant Activities. Life (Basel) 2023; 13:1416. [PMID: 37374198 DOI: 10.3390/life13061416] [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: 05/17/2023] [Revised: 06/08/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND Currently, the use of medicinal plants has increased. Artemisia species have been used in several applications, including medicinal use and uses in cosmetics, foods and beverages. Artemisia arborescens L. and Artemisia inculta are part of the Mediterranean diet in the form of aqueous infusions. Herein, we aimed to compare the secondary metabolites of the decoctions and two different extracts (methanolic and aqueous-glycerolic) of these two species, as well as their antioxidant capacity and trace metal levels. METHODS Total phenolic, total flavonoid, total terpenes, total hydroxycinnamate, total flavonol, total anthocyanin contents and antioxidant/antiradical activity were determined, and GC/MS analysis was applied to identify and quantify phenolics and terpenoids. Trace metals were quantified with ICP-MS. RESULTS Aqueous-glycerolic extracts demonstrated higher levels of total secondary metabolites, greater antioxidant potential and higher terpenoid levels than decoctions and methanolic extracts. Subsequently, the aqueous-glycerolic extract of a particularly high phenolic content was further analyzed applying targeted LC-MS/MS as the most appropriate analytic tool for the determination of the phenolic profile. Overall, twenty-two metabolites were identified. The potential contribution of infusions consumption to metal intake was additionally evaluated, and did not exceed the recommended daily intake. CONCLUSIONS Our results support the use of these two species in several food, cosmetic or pharmaceutical applications.
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Affiliation(s)
- Dimitra Z Lantzouraki
- Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vas. Constantinou Ave., 11635 Athens, Greece
| | - Charalampia Amerikanou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, 70 El. Venizelou Ave., 17676 Athens, Greece
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15784 Athens, Greece
| | - Vasiliki Kafourou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, 70 El. Venizelou Ave., 17676 Athens, Greece
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15784 Athens, Greece
| | - Dimitra Tagkouli
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, 70 El. Venizelou Ave., 17676 Athens, Greece
| | - Panagiotis Zoumpoulakis
- Department of Food Science and Technology, University of West Attica, Ag. Spyridonos, 12243 Egaleo, Greece
| | - Dimitris P Makris
- Department of Food Science & Nutrition, School of Agricultural Sciences, University of Thessaly, N. Temponera Street, 43100 Karditsa, Greece
| | - Nick Kalogeropoulos
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, 70 El. Venizelou Ave., 17676 Athens, Greece
| | - Andriana C Kaliora
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, 70 El. Venizelou Ave., 17676 Athens, Greece
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Amerikanou C, Karavoltsos S, Gioxari A, Tagkouli D, Sakellari A, Papada E, Kalogeropoulos N, Forbes A, Kaliora AC. Clinical and inflammatory biomarkers of inflammatory bowel diseases are linked to plasma trace elements and toxic metals; new insights into an old concept. Front Nutr 2022; 9:997356. [PMID: 36570124 PMCID: PMC9780073 DOI: 10.3389/fnut.2022.997356] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 07/18/2022] [Accepted: 11/22/2022] [Indexed: 12/13/2022] Open
Abstract
Background Inflammatory bowel diseases (IBD) are chronic immune-mediated diseases, mainly represented by Crohn's disease (CD) and ulcerative colitis (UC). Several environmental factors have been proposed to contribute to disease pathogenesis, amongst which are metals. These can affect the immune system and may be associated with IBD. The aim of the present cross-sectional study was to investigate blood levels of metals in IBD patients and to examine possible associations with clinical and inflammatory disease markers. Methods In total, 76 CD patients, 39 UC patients and 38 healthy controls were included. Blood and stool samples were collected. Metals were quantified in plasma samples using inductively coupled plasma mass spectrometry. Results There were more abnormalities of circulating metals in CD than in UC when compared to healthy controls. CD: Concentrations of the essential trace elements zinc and selenium were lower in CD patients than the controls. Chromium was negatively associated with serum IL-6 (Beta: -3.558, p = 0.011), and caesium with fecal calprotectin (Beta: -0.481, p = 0.038) and serum IL-10 (Beta: -1.912, p = 0.050). In contrast, copper was positively associated with C-reactive protein (Beta: 2.548 × 102, p = 0.033). UC: In UC, a negative association of iron with serum myeloperoxidase levels (Beta: -1.270 × 103, p = 0.044) was detected. Thallium, a hazardous metal, however, was positively associated with disease activity (Beta: 3.899, p = < 0.01). Conclusion In conclusion, our study offers new insights into the relations of metals with IBD. Further research should focus on the evaluation of the above associations and potential underlying mechanisms.
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Affiliation(s)
- Charalampia Amerikanou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece,Charalampia Amerikanou ;
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Aristea Gioxari
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece,Department of Nutritional Science and Dietetics, University of Peloponnese, Tripolis, Greece
| | - Dimitra Tagkouli
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Efstathia Papada
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece,Division of Medicine, University College London, London, United Kingdom
| | - Nick Kalogeropoulos
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | - Alastair Forbes
- Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - Andriana C. Kaliora
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece,*Correspondence: Andriana C. Kaliora ;
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Grigoriou C, Costopoulou D, Vassiliadou I, Karavoltsos S, Sakellari A, Bakeas E, Leondiadis L. Polycyclic aromatic hydrocarbons and trace elements dietary intake in inhabitants of Athens, Greece, based on a duplicate portion study. Food Chem Toxicol 2022; 165:113087. [DOI: 10.1016/j.fct.2022.113087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/20/2022] [Accepted: 04/26/2022] [Indexed: 11/28/2022]
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Chrysochou E, Koukoulakis K, Kanellopoulos PG, Sakellari A, Karavoltsos S, Dassenakis M, Minaidis M, Maropoulos G, Bakeas E. Human serum elements' levels and leukemia: A first pilot study from an adult Greek cohort. J Trace Elem Med Biol 2021; 68:126833. [PMID: 34371329 DOI: 10.1016/j.jtemb.2021.126833] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 06/30/2021] [Accepted: 07/30/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND The present study focuses on the evaluation of potential relationships between trace elements and acute and chronic types of leukemia, via the determination of their levels in human blood serum. METHODS A total of 199 serum samples from a Greek cohort were examined, including both leukemia cases and controls. Elements' analysis was carried out using inductively coupled plasma mass spectrometry (ICP-MS) and demographic features such as age, gender, smoking habits and area of residence were recorded and statistically treated applying Shapiro-Wilk, Kolmogorov-Smirnov, Mann Whitney and Kruskal Wallis tests (p < 0.05). Spearman correlation and principal component analysis (PCA) were also performed to investigate possible associations. RESULTS The results demonstrated significantly higher (p < 0.05) trace elements concentrations in cases' serum compared to that of controls excluding Ba, with Cu (median concentration 1295 μg L-1) being the most abundant in cases. Additionally, concentration of toxic Pb and Cd were found at seven and four fold higher concentrations in cases, respectively. Among the trace elements examined, only Rb (164 μg L-1) was detected in higher concentrations in controls. Ba, Cd and Co presented the lowest concentrations (lower than 1 μg L-1). PCA was performed for overall and classified data, indicating a stronger relation among the toxic As, Cd, Ni and Pb in cases than controls, particularly referring to smokers and industrial sites' residents. Hematological parameters and factors such as age and gender did not present any significant outcome or correlation. CONCLUSIONS The findings from this pilot study suggest a potential relationship between metals and leukemia, especially concerning the toxic ones. Results from the employed source apportionment tools imply that smoking and atmospheric degradation may be positively related with higher metal serum levels in leukemia patients.
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Affiliation(s)
- Eirini Chrysochou
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Zografos, Panepistimiopolis, Athens, 15784, Greece.
| | - Konstantinos Koukoulakis
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Zografos, Panepistimiopolis, Athens, 15784, Greece.
| | - Panagiotis Georgios Kanellopoulos
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Zografos, Panepistimiopolis, Athens, 15784, Greece.
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Zografos, Panepistimiopolis, Athens, 15784, Greece.
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Zografos, Panepistimiopolis, Athens, 15784, Greece.
| | - Manos Dassenakis
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Zografos, Panepistimiopolis, Athens, 15784, Greece.
| | | | | | - Evangelos Bakeas
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Zografos, Panepistimiopolis, Athens, 15784, Greece.
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Chrysochou E, Kanellopoulos PG, Koukoulakis KG, Sakellari A, Karavoltsos S, Minaidis M, Bakeas E. Heart Failure and PAHs, OHPAHs, and Trace Elements Levels in Human Serum: Results from a Preliminary Pilot Study in Greek Population and the Possible Impact of Air Pollution. Molecules 2021; 26:3207. [PMID: 34071927 PMCID: PMC8199329 DOI: 10.3390/molecules26113207] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 01/14/2023] Open
Abstract
Cardiovascular diseases (CVDs) have been associated with environmental pollutants. The scope of this study is to assess any potential relation of polycyclic aromatic hydrocarbons (PAHs), their hydroxylated derivatives, and trace elements with heart failure via their direct determination in human serum of Greek citizens residing in different areas. Therefore, we analyzed 131 samples including cases (heart failure patients) and controls (healthy donors), and the respective demographic data were collected. Significantly higher concentrations (p < 0.05) were observed in cases' serum regarding most of the examined PAHs and their derivatives with phenanthrene, fluorene, and fluoranthene being the most abundant (median of >50 μg L-1). Among the examined trace elements, As, Cd, Cu, Hg, Ni, and Pb were measured at statistically higher concentrations (p < 0.05) in cases' samples, with only Cr being significantly higher in controls. The potential impact of environmental factors such as smoking and area of residence has been evaluated. Specific PAHs and trace elements could be possibly related with heart failure development. Atmospheric degradation and smoking habit appeared to have a significant impact on the analytes' serum concentrations. PCA-logistic regression analysis could possibly reveal common mechanisms among the analytes enhancing the hypothesis that they may pose a significant risk for CVD development.
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Affiliation(s)
- Eirini Chrysochou
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (E.C.); (P.G.K.); (K.G.K.)
| | - Panagiotis Georgios Kanellopoulos
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (E.C.); (P.G.K.); (K.G.K.)
| | - Konstantinos G. Koukoulakis
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (E.C.); (P.G.K.); (K.G.K.)
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (A.S.); (S.K.)
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (A.S.); (S.K.)
| | | | - Evangelos Bakeas
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (E.C.); (P.G.K.); (K.G.K.)
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Paraskevopoulou P, Raptopoulos G, Leontaridou F, Papastergiou M, Sakellari A, Karavoltsos S. Evaluation of Polyurea-Crosslinked Alginate Aerogels for Seawater Decontamination. Gels 2021; 7:gels7010027. [PMID: 33806357 PMCID: PMC8005931 DOI: 10.3390/gels7010027] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 02/01/2021] [Revised: 02/14/2021] [Accepted: 02/22/2021] [Indexed: 12/20/2022] Open
Abstract
Polyurea-crosslinked Ca-alginate (X-Ca-alginate) aerogel beads (diameter: 3.3 mm) were evaluated as adsorbents of metal ions, organic solvents, and oils. They were prepared via reaction of an aromatic triisocyanate (Desmodur RE) with pre-formed Ca-alginate wet gels and consisted of 54% polyurea and 2% calcium. X-Ca-alginate aerogels are hydrophobic nanoporous materials (90% v/v porosity), with a high BET surface area (459 m2/g−1), and adsorb PbII not only from ultrapure water (29 mg/g−1) but also from seawater (13 mg/g−1) with high selectivity. The adsorption mechanism involves replacement of CaII by PbII ions coordinated to the carboxylate groups of the alginate backbone. After treatment with a Na2EDTA solution, the beads can be reused, without significant loss of activity for at least two times. X-Ca-alginate aerogels can also uptake organic solvents and oil from seawater; the volume of the adsorbate can be as high as the total pore volume of the aerogel (6.0 mL/g−1), and the absorption is complete within seconds. X-Ca alginate aerogels are suitable for the decontamination of aquatic environments from a broader range of inorganic and organic pollutants.
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Affiliation(s)
- Patrina Paraskevopoulou
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (G.R.); (F.L.); (M.P.)
- Correspondence: (P.P.); (S.K.); Tel.: +30-210-727-4381 (P.P.); 30-210-727-4269 (S.K.)
| | - Grigorios Raptopoulos
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (G.R.); (F.L.); (M.P.)
| | - Faidra Leontaridou
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (G.R.); (F.L.); (M.P.)
| | - Maria Papastergiou
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (G.R.); (F.L.); (M.P.)
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece;
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece;
- Correspondence: (P.P.); (S.K.); Tel.: +30-210-727-4381 (P.P.); 30-210-727-4269 (S.K.)
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Karavoltsos S, Sakellari A, Bakeas E, Bekiaris G, Plavšić M, Proestos C, Zinelis S, Koukoulakis K, Diakos I, Dassenakis M, Kalogeropoulos N. Trace elements, polycyclic aromatic hydrocarbons, mineral composition, and FT-IR characterization of unrefined sea and rock salts: environmental interactions. Environ Sci Pollut Res Int 2020; 27:10857-10868. [PMID: 31950411 DOI: 10.1007/s11356-020-07670-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 01/07/2020] [Indexed: 05/21/2023]
Abstract
Unrefined sea salt originates from seawater, typically by natural evaporation. Being minimally processed, it contains the natural minerals and impurities of seawater. Despite the wide applications of salt for culinary and food preservation purposes, the available composition data is particularly limited. Since seawater often contains various harmful substances at a trace or ultra-trace level, their determination in unrefined salt is significant in terms of quality control and food safety. Twenty-four (24) samples of unrefined sea and rock salts retailed in Greece were studied in terms of their trace metals and polycyclic aromatic hydrocarbon (PAH) content, which constitute the usual pollutants examined in seawater. In addition, samples' color and mineralogy were recorded and their attenuated total reflectance Fourier transform infrared (ATR FT-IR) spectra were obtained. No statistically significant differences were found between sea and rock salts regarding their trace metal (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn) content (excluding V) and the 15 PAHs examined. ATR FT-IR succeeded to discriminate among sea, rock, flower, and underground salty water salts. Compared with the typical trace metal concentrations in seawater, quite high Pb values were determined in both sea and rock salts, whereas outliers in the rest of the trace elements examined were scarce. Median values of the sum of PAH (ΣPAHs) concentrations were calculated equal to 2.1 and 2.6 ng g-1 for sea and rock salts, respectively. Environmental interactions of salt production with trace elements and PAHs are also discussed.
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Affiliation(s)
- Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 157 84, Athens, Greece.
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 157 84, Athens, Greece
| | - Evangelos Bakeas
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 157 84, Athens, Greece
| | - Georgios Bekiaris
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, 118 55, Athens, Greece
| | - Marta Plavšić
- Center for Marine and Environmental Research, Ruđer Bošković Institute, P.O. Box 180, 10002, Zagreb, Croatia
| | - Charalampos Proestos
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 157 84, Athens, Greece
| | - Spiros Zinelis
- Department of Biomaterials, School of Dentistry, National and Kapodistrian University of Athens, 115 21, Athens, Greece
| | - Konstantinos Koukoulakis
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 157 84, Athens, Greece
| | - Ioannis Diakos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 157 84, Athens, Greece
| | - Manos Dassenakis
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 157 84, Athens, Greece
| | - Nick Kalogeropoulos
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, 176 76, Athens, Greece
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10
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Karavoltsos S, Sakellari A, Sinanoglou VJ, Zoumpoulakis P, Plavšić M, Dassenakis M, Kalogeropoulos N. Copper Complexing Capacity and Trace Metal Content in Common and Balsamic Vinegars: Impact of Organic Matter. Molecules 2020; 25:molecules25040861. [PMID: 32075327 PMCID: PMC7070403 DOI: 10.3390/molecules25040861] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 02/11/2020] [Accepted: 02/14/2020] [Indexed: 11/30/2022] Open
Abstract
Complex formation is among the mechanisms affecting metal bioaccessibility. Hence, the quantification of organic metal complexation in food items is of interest. Organic ligands in solutions of environmental and/or food origin function as buffering agents against small changes in dissolved metal concentrations, being able to maintain free metal ion concentrations below the toxicity threshold. Organic matter in vinegars consists of bioactive compounds, such as polyphenols, Maillard reaction endproducts, etc., capable of complexing metal ions. Furthermore, transition metal ions are considered as micronutrients essential for living organisms exerting a crucial role in metabolic processes. In this study, differential pulse anodic stripping voltammetry (DPASV), a sensitive electrochemical technique considered to be a powerful tool for the study of metal speciation, was applied for the first time in vinegar samples. The concentrations of Cu complexing ligands (LT) in 43 vinegars retailed in Greece varied between 0.05 and 52 μM, with the highest median concentration determined in balsamic vinegars (14 μM), compared to that of common vinegars (0.86 μM). In 21% of the vinegar samples examined, LT values were exceeded by the corresponding total Cu concentrations, indicating the presence of free Cu ion and/or bound within labile inorganic/organic complexes. Red grape balsamic vinegars exhibited the highest density of Cu ligands per mass unit of organic matter compared to other foodstuffs such as herbal infusions, coffee brews, and beers. Among the 16 metals determined in vinegars, Pb is of particular importance from a toxicological point of view, whereas further investigation is required regarding potential Rb biomagnification.
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Affiliation(s)
- Sotirios Karavoltsos
- National and Kapodistrian University of Athens, Department of Chemistry, Laboratory of Environmental Chemistry, Panepistimiopolis, Zografou, 15784 Athens, Greece; (A.S.); (M.D.)
- Correspondence: ; Tel.: +30-210-7274049
| | - Aikaterini Sakellari
- National and Kapodistrian University of Athens, Department of Chemistry, Laboratory of Environmental Chemistry, Panepistimiopolis, Zografou, 15784 Athens, Greece; (A.S.); (M.D.)
| | - Vassilia J. Sinanoglou
- University of West Attica, Department of Food Science and Technology, Laboratory of Chemistry, Analysis & Design of Food Processes, Agiou Spiridonos 28, Egaleo 122 43, Greece
| | - Panagiotis Zoumpoulakis
- Institute of Chemical Biology, National Hellenic Research Foundation, 48, Vas. Constantinou Ave., 11635 Athens, Greece;
| | - Marta Plavšić
- Ruđer Bošković Institute, Division for Marine and Environmental Research, P.O. Box 180, 10002 Zagreb, Croatia;
| | - Manos Dassenakis
- National and Kapodistrian University of Athens, Department of Chemistry, Laboratory of Environmental Chemistry, Panepistimiopolis, Zografou, 15784 Athens, Greece; (A.S.); (M.D.)
| | - Nick Kalogeropoulos
- Harokopio University of Athens, Department of Dietetics-Nutrition, School of Health Science and Education, El. Venizelou 70, Kallithea, 176 76 Athens, Greece;
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11
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Kandyliari A, Mallouchos A, Papandroulakis N, Golla JP, Lam TT, Sakellari A, Karavoltsos S, Vasiliou V, Kapsokefalou M. Nutrient Composition and Fatty Acid and Protein Profiles of Selected Fish By-Products. Foods 2020; 9:foods9020190. [PMID: 32075005 PMCID: PMC7074476 DOI: 10.3390/foods9020190] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 01/18/2023] Open
Abstract
Processing of fish in aquaculture generates considerable amounts of by-products that remain underused and/or unexploited. We evaluated the nutritive content of fish by-products (head, gills, intestines, trimmings, bones, and skin) from meagre and gilthead sea bream fish species reared in Greece in order to estimate their nutritional value for future development of high added-value products. The proximate composition of the fish samples (total protein, total lipid, ash, moisture, and macro-element content) was determined using the Association of Official Analytical Chemists (AOAC) and International Organization for Standardization (ISO) official methods. The content of fatty acids was determined using capillary gas chromatography, and the protein profile was estimated employing scientific orbitrap mass spectrophotometer methodology. The nutrient composition of fish by-products presented fluctuations among the different by-products. Skin was the most significant protein source, trimmings and bones were high in calcium, and the head, intestines, and bones were a good source of lipids. The most abundant lipid acids found in by-products were oleic, palmitic, linoleic, and eicosenoic acids, whereas the most abundant proteins were adenosine triphosphate (ATP) synthase subunit epsilon, mitochondrial nicotinamide adenine dinucleotide (NADH) dehydrogenase, and mitochondrial cytochrome b-c1 complex subunit 8. These data suggest that by-products constitute valuable sources of nutrients and could therefore be exploited in accordance with the principles of a circular economy.
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Affiliation(s)
- Aikaterini Kandyliari
- Unit of Human Nutrition, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece; (A.K.); (A.M.)
| | - Athanasios Mallouchos
- Unit of Human Nutrition, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece; (A.K.); (A.M.)
| | - Nikos Papandroulakis
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Center for Marine Research, 71003 Heraklion, Greece;
| | - Jaya Prakash Golla
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT 06510, USA; (J.P.G.); (V.V.)
| | - TuKiet T. Lam
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520, USA;
- Keck MS & Proteomics Resource, WM Keck Biotechnology Resource Laboratory, New Haven, CT 06510, USA
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, 15784 Athens, Greece; (A.S.); (S.K.)
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, 15784 Athens, Greece; (A.S.); (S.K.)
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT 06510, USA; (J.P.G.); (V.V.)
| | - Maria Kapsokefalou
- Unit of Human Nutrition, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece; (A.K.); (A.M.)
- Correspondence: ; Tel.: +30-210-529-4708
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12
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Sakellari A, Karavoltsos S, Tagkouli D, Rizou C, Sinanoglou VJ, Zoumpoulakis P, Koutrotsios G, Zervakis GI, Kalogeropoulos N. Trace Elements in Pleurotus Ostreatus, P. Eryngii, and P. Nebrodensis Mushrooms Cultivated on Various Agricultural By-Products. ANAL LETT 2019. [DOI: 10.1080/00032719.2019.1594865] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitra Tagkouli
- Department of Nutrition and Dietetics, Harokopio University, Athens, Greece
| | - Christiana Rizou
- Department of Nutrition and Dietetics, Harokopio University, Athens, Greece
| | | | - Panagiotis Zoumpoulakis
- Institute of Biology, Medicinal Chemistry, and Biotechnology, National Hellenic Research Foundation, Athens, Greece
| | - Georgios Koutrotsios
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Athens, Greece
| | - Georgios I. Zervakis
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Athens, Greece
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13
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Asprouli E, Kalafati IP, Sakellari A, Karavoltsos S, Vlachogiannakos J, Revenas K, Kokkinos A, Dassenakis M, Dedoussis GV, Kalogeropoulos N. Evaluation of Plasma Trace Elements in Different Stages of Nonalcoholic Fatty Liver Disease. Biol Trace Elem Res 2019; 188:326-333. [PMID: 30014284 DOI: 10.1007/s12011-018-1432-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 07/03/2018] [Indexed: 01/18/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is considered as the hepatic manifestation of metabolic syndrome. Its global prevalence is estimated between 25 and 45%, occurring mainly in overweight individuals with unhealthy dietary habits and low levels of physical activity. Many studies have investigated the association of trace elements with liver diseases, though not with NAFLD. In this work, we investigated trace element levels in plasma of patients and not-patients and their possible association with various stages of the disease. Inductively coupled plasma mass spectrometry (ICP-MS) was employed for the determination of As, Ba, Cd, Co, Cs, Cu, Fe, Rb, Sr, Tl, and Zn in the plasma of 189 free-living residents of Athens, Greece, either healthy or patients with mild, moderate, or severe NAFLD. The disease was diagnosed by abdominal ultrasound; blood samples were analyzed for total, HDL and LDL cholesterol, triglycerides, fasting glucose, fasting insulin, and liver enzymes, namely aspartate aminotransferase (AST), alanine transaminase (ALT), and γ-glutamyltransferase (Gamma-GT); insulin resistance was determined by the homeostatic model assessment (HOMA-IR). Zinc exhibited a statistically significant negative association with the severity of the disease, while cesium showed a statistically significant positive association. Moreover, thallium and iron were inversely associated with insulin levels. Trace element determination in plasma could be useful for establishing relationships with NAFLD status of patients. Further research is required for the verification and interpretation of these findings.
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Affiliation(s)
- Eleni Asprouli
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioanna Panagiota Kalafati
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - John Vlachogiannakos
- Academic Department of Gastroenterology, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Revenas
- Radiology Department, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexander Kokkinos
- First Department of Propaedeutic and Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Manos Dassenakis
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - George V Dedoussis
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
| | - Nick Kalogeropoulos
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece.
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14
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Sinanoglou VJ, Zoumpoulakis P, Fotakis C, Kalogeropoulos N, Sakellari A, Karavoltsos S, Strati IF. On the Characterization and Correlation of Compositional, Antioxidant and Colour Profile of Common and Balsamic Vinegars. Antioxidants (Basel) 2018; 7:E139. [PMID: 30314353 PMCID: PMC6210356 DOI: 10.3390/antiox7100139] [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: 09/15/2018] [Revised: 10/05/2018] [Accepted: 10/05/2018] [Indexed: 01/23/2023] Open
Abstract
Commercially available common and balsamic vinegars were examined, using a combination of spectrophotometric, chromatographic, colorimetric and spectroscopic methods. Total phenolic content, antioxidant activity, radical scavenging capacity, phenolic profile, colour parameters, Fourier Transform Infrared (FT-IR) absorbance spectra and Nuclear Magnetic Resonance (¹H NMR) spectra were comparatively studied. The main scope was the assessment of vinegar antioxidant and metabolic profiles and the identification of the most appropriate features influencing their type and subtypes. Red grape balsamic vinegars exhibited the strongest antioxidant profile. High total phenolic content and radical scavenging-antioxidant activity of vinegars was strongly correlated with high hue-angle and colour density values and low lightness and a* values. FT-IR spectra analysis confirmed the presence of organic acids and carbohydrates and, in combination with Gas Chromatography-Mass Spectrometry (GC-MS), the occurrence of phenolic compounds. NMR spectroscopy enabled the identification of 27 characteristic metabolites in each type of vinegar. The combination of all applied techniques provides critical information on compositional differences among the vinegars and could serve as an application tool for similar fermentation products.
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Affiliation(s)
- Vassilia J Sinanoglou
- Laboratory of Chemistry, Analysis & Design of Food Processes, Department of Food Science and Technology, University of West Attica, Ag. Spyridonos, 12243 Egaleo, Greece.
| | - Panagiotis Zoumpoulakis
- Institute of Biology, Medicinal Chemistry & Biotechnology, National Hellenic Research Foundation, 48, Vas. Constantinou Ave., 11635 Athens, Greece.
| | - Charalambos Fotakis
- Institute of Biology, Medicinal Chemistry & Biotechnology, National Hellenic Research Foundation, 48, Vas. Constantinou Ave., 11635 Athens, Greece.
| | - Nick Kalogeropoulos
- Department of Dietetics-Nutrition, School of Health Science and Education, Harokopio University of Athens, Eleftheriou Venizelou 70, 17676 Kallithea, Greece.
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, 15784 Athens, Greece.
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, 15784 Athens, Greece.
| | - Irini F Strati
- Laboratory of Chemistry, Analysis & Design of Food Processes, Department of Food Science and Technology, University of West Attica, Ag. Spyridonos, 12243 Egaleo, Greece.
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15
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Sakellari A, Karavoltsos S, Plavšić M, Bempi E, Papantonopoulou G, Dassenakis M, Kalogeropoulos N. Copper complexing properties, trace metal content and organic matter physico-chemical characterization of Greek beers. Microchem J 2017. [DOI: 10.1016/j.microc.2017.07.010] [Citation(s) in RCA: 7] [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: 11/27/2022]
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16
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Karavoltsos S, Fotiadis F, Michopoulos P, Sakellari A, Plavšić M, Bourletsikas A, Kaoukis K, Thomaidis NS, Dassenakis M, Scoullos M. Organic complexation of copper in throughfall and open field bulk deposition: Influence of the tree canopy of Mediterranean forest ecosystems. Chemosphere 2017; 167:28-35. [PMID: 27705810 DOI: 10.1016/j.chemosphere.2016.09.131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 09/16/2016] [Accepted: 09/26/2016] [Indexed: 06/06/2023]
Abstract
The complexing capacity for Cu ions (LT) and the apparent stability constant values (logKapp) were measured in throughfall (TF) and open field bulk deposition (BD), at two Mediterranean forest ecosystems of western Greece. LT was measured for the first time in the TF of natural forests. Concentrations of LT were three-to-four-fold higher in TF (mean ± st.dev: 2014 ± 769 nM for Varetada and 1565 ± 595 nM for Karpenissi) compared to those in BD (531 ± 517 nM and 468 ± 321 nM, respectively). In all TF and BD samples, LT concentrations were significantly higher than the corresponding total Cu concentrations, indicating that Cu was fully complexed. The LT/TOC ratios in TF were found comparable between the two study sites (235 ± 149 nM mg-1 C for Varetada and 256 ± 233 nM mg-1 C for Karpenissi) and with those of BD (226 ± 257 and 163 ± 163 nM mg-1 C, respectively). The determined mean logKapp values were almost identical in TF (6.8 ± 0.7 at Varetada; 6.8 ± 0.6 at Karpenissi) and BD (6.5 ± 0.6 at Varetada; 6.8 ± 0.3 at Karpenissi), pointing to the fact that regardless of the enrichment of TF in ligands (LT(TF) > LT(BD)) the type of binding sites remain the same. The logKapp values which were obtained herewith are similar to those obtained for humic-like substances (HULIS), indicating them as the most widespread type of ligands in BD and TF.
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Affiliation(s)
- Sotirios Karavoltsos
- National and Kapodistrian University of Athens, Department of Chemistry, Laboratory of Environmental Chemistry, Panepistimiopolis, 157 84, Athens, Greece.
| | - Fotios Fotiadis
- National and Kapodistrian University of Athens, Department of Chemistry, Laboratory of Environmental Chemistry, Panepistimiopolis, 157 84, Athens, Greece
| | - Panagiotis Michopoulos
- H.A.O. DEMETER, Institute of Mediterranean Forest Ecosystems, Terma Alkmanos, 115 28 Athens, Greece
| | - Aikaterini Sakellari
- National and Kapodistrian University of Athens, Department of Chemistry, Laboratory of Environmental Chemistry, Panepistimiopolis, 157 84, Athens, Greece
| | - Marta Plavšić
- Ruđer Bošković Institute, Center for Marine and Environmental Research, P.O. Box 180, 10002 Zagreb, Croatia
| | - Athanassios Bourletsikas
- H.A.O. DEMETER, Institute of Mediterranean Forest Ecosystems, Terma Alkmanos, 115 28 Athens, Greece
| | - Kostas Kaoukis
- H.A.O. DEMETER, Institute of Mediterranean Forest Ecosystems, Terma Alkmanos, 115 28 Athens, Greece
| | - Nikolaos S Thomaidis
- National and Kapodistrian University of Athens, Department of Chemistry, Laboratory of Analytical Chemistry, Panepistimiopolis, 157 84, Athens, Greece
| | - Manos Dassenakis
- National and Kapodistrian University of Athens, Department of Chemistry, Laboratory of Environmental Chemistry, Panepistimiopolis, 157 84, Athens, Greece
| | - Michael Scoullos
- National and Kapodistrian University of Athens, Department of Chemistry, Laboratory of Environmental Chemistry, Panepistimiopolis, 157 84, Athens, Greece
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17
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Sakellari A, Karavoltsos S, Kalogeropoulos N, Theodorou D, Dedoussis G, Chrysohoou C, Dassenakis M, Scoullos M. Predictors of cadmium and lead concentrations in the blood of residents from the metropolitan area of Athens (Greece). Sci Total Environ 2016; 568:263-270. [PMID: 27295597 DOI: 10.1016/j.scitotenv.2016.06.018] [Citation(s) in RCA: 6] [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: 03/31/2016] [Revised: 06/03/2016] [Accepted: 06/04/2016] [Indexed: 06/06/2023]
Abstract
The Cd and Pb blood contents of healthy adult subjects who are non-occupationally exposed and living in the metropolitan area of Athens (Greece) have not been assessed thus far. Additionally, Greeks rank first among EU27 in terms of smoking habits. To fill the existing gap, we aimed to evaluate the predictors and propose reference values (RVs) of the Cd (CdB) and Pb (PbB) blood concentrations in residents of the metropolitan area of Athens (Greece). Age, sex, smoking, alcohol drinking, educational status and nutritional habits were used as variables, with an emphasis on smoking. CdB and PbB determinations were performed directly by graphite furnace atomic absorption spectrometry (GFAAS) following the appropriate dilution of the samples with Triton-X-100. The RVs of CdB and PbB proposed for the general adult population of the Metropolitan area of Athens, Greece (upper limit of the 95% CI of the 95th percentile of the distribution of values), were 2.3 and 88μgL(-1) (P95: 1.8 and 77μgL(-1); 95% CI (P95): 1.5-2.3 and 70-88μgL(-1)), respectively. Males had a higher median CdB (0.69μgL(-1)) than females (0.55μgL(-1)). Subjects aged <40years had a lower median CdB (0.51μgL(-1)) than the elderly (≥60years; 0.60μgL(-1)). The CdB in smokers (1.2μgL(-1)) was almost threefold higher than in non-smokers (0.46μgL(-1)). The PbB levels were higher in males (31μgL(-1)) than females (20μgL(-1)). Subjects aged <40years had a lower median PbB (17μgL(-1)) than the elderly (≥60years; 32μgL(-1)). A multiple linear regression analysis demonstrated that the predictor variables for the CdB levels were the standardized beta weight, smoking, age, alcohol consumption, and intake of leafy vegetables, whereas for the PbB levels they were sex and age.
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Affiliation(s)
- Aikaterini Sakellari
- National and Kapodistrian University of Athens, Division III, Laboratory of Environmental Chemistry, Zografou, Panepistimiopolis, 157 84 Athens, Greece.
| | - Sotirios Karavoltsos
- National and Kapodistrian University of Athens, Division III, Laboratory of Environmental Chemistry, Zografou, Panepistimiopolis, 157 84 Athens, Greece
| | - Nick Kalogeropoulos
- Harokopio University, Department of Nutrition Science and Dietetics, Laboratory of Chemistry-Biochemistry-Physical Chemistry of Foods, 176 71 Athens, Greece
| | - Dimitrios Theodorou
- School of Chemical Engineering, Laboratory of Fuels and Lubricants Technology, National Technical University of Athens, Iroon Polytechneiou 9, Athens 15780, Greece
| | - George Dedoussis
- Harokopio University, Department of Nutrition Science and Dietetics, Laboratory of Molecular Biology, 176 71 Athens, Greece
| | - Christina Chrysohoou
- First Cardiology Clinic, Hippokration Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Manos Dassenakis
- National and Kapodistrian University of Athens, Division III, Laboratory of Environmental Chemistry, Zografou, Panepistimiopolis, 157 84 Athens, Greece
| | - Michael Scoullos
- National and Kapodistrian University of Athens, Division III, Laboratory of Environmental Chemistry, Zografou, Panepistimiopolis, 157 84 Athens, Greece
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18
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Sakellari A, Plavšić M, Karavoltsos S, Diakos I, Dassenakis M, Proestos C. Electrochemical Evaluation of the Organic Matter Content of Edible Sea and Rock Salts Retailed in the Greek Market. Curr Res Nutr Food Sci 2016. [DOI: 10.12944/crnfsj.4.special-issue-october.17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The release of copper-complexing ligands in 14 sea and 10 rock edible salts retailed in the Greek market has been examined. The concentration of ligands (LT) and the copper-binding strength (logKapp) of salt solutions were determined with Differential Pulse Anodic Stripping Voltammetry (DPASV).
The tested salt samples were found to have Cu complexing ligands, at concentrations ranging from <0.1 to 61.2 nmol g-1. In none of the salt samples examined (except a single one) were LTvalues exceeded by the corresponding total copper concentrations, indicating that Cu is fully complexed.
Aiming to partially characterize the physico-chemical properties of the organic material contained in salts, the surface active substances (SAS) and catalytically active compounds (CAC) were measured, for the first time, in salt solutions by sensitive electrochemical techniques. Higher concentrations of organic carbon and SAS were determined in sea samples compared to rock salts.
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Affiliation(s)
- Aikaterini Sakellari
- Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece, 157 84
| | - Marta Plavšić
- Center for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia, 10002, P.O. Box 180
| | - Sotirios Karavoltsos
- Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece, 157 84
| | - Ioannis Diakos
- Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece, 157 84
| | - Manos Dassenakis
- Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece, 157 84
| | - Charalampos Proestos
- Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece, 157 84
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19
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Stagakis M, Costopoulou D, Vassiliadou I, Karavoltsos S, Sakellari A, Kalogeropoulos N, Leondiadis L. Determination of Polychlorinated Biphenyls in Aegean Fish and Seafood. ANAL LETT 2015. [DOI: 10.1080/00032719.2015.1070161] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Vassiliadou I, Costopoulou D, Kalogeropoulos N, Karavoltsos S, Sakellari A, Zafeiraki E, Dassenakis M, Leondiadis L. Levels of perfluorinated compounds in raw and cooked Mediterranean finfish and shellfish. Chemosphere 2015; 127:117-126. [PMID: 25676497 DOI: 10.1016/j.chemosphere.2014.12.081] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 11/27/2014] [Accepted: 12/30/2014] [Indexed: 06/04/2023]
Abstract
Perfluorinated compounds (PFCs) were analyzed in several species of small Mediterranean fish and shellfish, all of which are popular in Greek diet. Analysis was conducted in raw samples and in samples cooked by the two ways preferred in Greek cuisine, i.e. fried in olive oil and grilled. PFCs above the detection limit were found in all raw samples except sardine, mussel and squid. The predominant PFC was PFOS (perfluorooctane sulfonate), the highest concentration of which was measured in picarel (20.4 ng g(-1) fresh weight). The PFOS values for the rest of the samples were between <LOD and 5.66 ng g(-1) fw. The concentrations of the detected PFCs were in most cases higher after frying or grilling, this increase being statistically significant. Based on these results, the Tolerable Daily Intake for PFOS and PFOA (perfluorooctanoic acid) through consumption of fish and seafood was well below the values proposed by EFSA.
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Affiliation(s)
- Irene Vassiliadou
- Mass Spectrometry and Dioxin Analysis Laboratory, NCSR "Demokritos", Neapoleos 27, 15310 Athens, Greece
| | - Danae Costopoulou
- Mass Spectrometry and Dioxin Analysis Laboratory, NCSR "Demokritos", Neapoleos 27, 15310 Athens, Greece
| | - Nick Kalogeropoulos
- Laboratory of Chemistry-Biochemistry-Physical Chemistry of Foods, Department of Nutrition and Dietetics, Harokopio University, 176 71 Athens, Greece
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, Section III, National and Kapodistrian University of Athens, Panepistimiopolis, 157 71 Athens, Greece
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, Section III, National and Kapodistrian University of Athens, Panepistimiopolis, 157 71 Athens, Greece
| | - Effrosyni Zafeiraki
- Mass Spectrometry and Dioxin Analysis Laboratory, NCSR "Demokritos", Neapoleos 27, 15310 Athens, Greece
| | - Manos Dassenakis
- Laboratory of Environmental Chemistry, Department of Chemistry, Section III, National and Kapodistrian University of Athens, Panepistimiopolis, 157 71 Athens, Greece
| | - Leondios Leondiadis
- Mass Spectrometry and Dioxin Analysis Laboratory, NCSR "Demokritos", Neapoleos 27, 15310 Athens, Greece.
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Karavoltsos S, Sakellari A, Strmečki S, Plavšić M, Ioannou E, Roussis V, Dassenakis M, Scoullos M. Copper complexing properties of exudates and metabolites of macroalgae from the Aegean Sea. Chemosphere 2013; 91:1590-5. [PMID: 23352148 DOI: 10.1016/j.chemosphere.2012.12.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 12/20/2012] [Accepted: 12/21/2012] [Indexed: 05/09/2023]
Abstract
Macroalgae are a significant source of extracellular organic material in the coastal areas of the Mediterranean, including organic ligands which serve as modulators of metal complexing capacity. This paper examines the release of copper-complexing ligands by 24 macroalgal species, including chlorophyta, rhodophyta, ochrophyta as well as Posidonia oceanica, common throughout the Mediterranean. Metabolites isolated from the algae Dictyota dichotoma and Pterocladiella capillacea were examined for the first time regarding their Cu-complexing properties. The concentration of ligands (LT) and the copper-binding strength (logKapp) of exudates and metabolites were determined by electrochemical methods. All algal species released ligands giving LT concentrations ranging from 109 to 744 nM in unfiltered samples. An increase in the concentration of ligands up to 15 times in comparison to the blank was observed after 48 h of culturing macroalgae in artificial seawater. The binding strength (log Kapp) varied among species from 7.0 to 8.6, except for the metabolites for which it was lower (log Kapp=6). Most of the ligands released were in the dissolved phase, with the contribution of particulate and/or colloidal organic matter (up to 46% of total ligands) appearing to be important only in specific macroalgal species.
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Affiliation(s)
- Sotirios Karavoltsos
- National and Kapodistrian University of Athens, Department of Chemistry, Laboratory of Environmental Chemistry, Panepistimiopolis Zografou, 157 71 Athens, Greece.
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Sakellari A, Karavoltsos S, Theodorou D, Dassenakis M, Scoullos M. Bioaccumulation of metals (Cd, Cu, Zn) by the marine bivalves M. galloprovincialis, P. radiata, V. verrucosa and C. chione in Mediterranean coastal microenvironments: association with metal bioavailability. Environ Monit Assess 2013; 185:3383-3395. [PMID: 22875465 DOI: 10.1007/s10661-012-2799-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Accepted: 07/23/2012] [Indexed: 06/01/2023]
Abstract
The concentrations of Cd, Cu and Zn in both the whole soft tissue and separate organs (gills, mantle, muscle and digestive gland) of wild bivalves (Mytilus galloprovincialis, Pinctada radiata, Venus verrucosa and Callista chione) from three different coastal microenvironments of Greece were monitored from 2003 to 2004. In parallel, by employing appropriate analytical protocols for metal partitioning, the labile fraction of the metals was determined in the dissolved phase, suspended particulate matter and sediments. Differences in the metal levels were detected both among the study areas as well as among the bivalves examined. Significant bioaccumulation was demonstrated regarding Zn in M. galloprovincialis specimens from the highly industrialized Gulf of Elefsis and Cd in P. radiata and V. verrucosa from the Maliakos Gulf, which is influenced by extended agricultural activity occurring at the neighbouring area and a river outflow. Data of the metal levels in the various environmental phases were correlated with their concentrations in bivalves' tissues. The clear relationships obtained in many cases among the labile metal concentrations and the bioaccumulated concentrations in bivalves point out that the labile fraction of a metal is the most bioavailable. The lack of positive correlation for C. chione confirms the occurrence of effective mechanisms of internal regulation of metal concentrations.
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Affiliation(s)
- Aikaterini Sakellari
- Division III, Laboratory of Environmental Chemistry, National and Kapodistrian University of Athens, Zografou, Panepistimiopolis, Athens 15771, Greece.
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Kalogeropoulos N, Karavoltsos S, Sakellari A, Avramidou S, Dassenakis M, Scoullos M. Heavy metals in raw, fried and grilled Mediterranean finfish and shellfish. Food Chem Toxicol 2012; 50:3702-8. [PMID: 22813872 DOI: 10.1016/j.fct.2012.07.012] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 07/06/2012] [Accepted: 07/07/2012] [Indexed: 10/28/2022]
Abstract
The effect of domestic pan-frying and grilling on Cd, Cr, Cu, Fe, Hg, Ni, Pb and Zn content of popular small Mediterranean finfish and shellfish was studied. The species selected -namely anchovy, bogue, hake, picarel, sardine, sand smelt, stripped mullet, Mediterranean mussel, shrimp and squid- are among the most commonly marketed and consumed in Greece and most of the Mediterranean countries. Both culinary practices examined resulted in increased metals concentrations compared to those of raw samples, the increment being inversely related to fish size and -in most cases- being more extended in pan-frying. The consumption of cooked seafood is expected to provide significant amounts of Fe and Zn followed, in decreasing order, by Cr, Cu and Ni. In addition, the estimation of (a) weekly intakes and (b) target hazard quotients for the toxic elements Cd, Hg and Pb revealed that the cooked fish and shellfish do not pose any health risk for the consumers.
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Affiliation(s)
- Nick Kalogeropoulos
- Laboratory of Chemistry-Biochemistry-Physical Chemistry of Foods, Department of Nutrition and Dietetics, Harokopio University, 176 71 Athens, Greece.
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Affiliation(s)
- S Karavoltsos
- University of Athens, Chemistry Department, Division III, Inorganic and Environmental Chemistry and Technology, Panepistimiopolis 157 71, Athens, Greece
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Abstract
Determinations of the cadmium content of a wide variety of foodstuffs from the Greek market were carried out. The values detected ranged from <0.1 ng x g(-1) in alcoholic beverages to 1595.8 ng x g(-1) in large snails. The highest values were observed in molluscs and crustaceans (117.4 ng x g(-1)), followed by leafy vegetables (28.3 ng x g(-1)), potatoes (22.3 ng x g(-1)) and organs and offal (20.7 ng x g(-1)), whereas the other food categories had a lower cadmium content. The results are comparable with those from the rest of Europe. Preliminary analytical data on the cadmium content of food samples of organic cultivation showed significantly lower values compared with those of samples of conventional produce.
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Affiliation(s)
- S Karavoltsos
- University of Athens, Chemistry Department, Division III, Inorganic and Environmental Chemistry and Technology, Panepistimiopolis, Athens, Greece
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