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Hatzianestis I, Parinos C, Chourdaki S, Plakidi E, Abualnaja Y, Hoteit I, Churchill J, Papageorgiou D, Papadopoulos VP, Alshehri Y, Pavlidou A. Organic contaminants levels, distribution and risk assessment in Jeddah marine coastal zone sediments. Mar Pollut Bull 2024; 199:115926. [PMID: 38128252 DOI: 10.1016/j.marpolbul.2023.115926] [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: 09/13/2023] [Revised: 12/07/2023] [Accepted: 12/10/2023] [Indexed: 12/23/2023]
Abstract
Herein, various organic contaminants were determined in surface sediments collected from the Jeddah coastal zone, Saudi Arabia, to assess their levels, origin and probable toxic effects on marine organisms. High hydrocarbons concentrations, indicative of an enhanced pollutant burden, were recorded in the Jeddah Lagoon (mean value 4100 mg/kg for total aliphatic hydrocarbons (∑AHC) and 5800 μg/kg for total polycyclic aromatic hydrocarbons (∑PAH)), whereas mean values in Mena Jeddah were 258 mg/kg for ∑AHC and 615 μg/kg for ∑PAH. By using molecular diagnostic ratios/indices and applying Positive Matrix Factorization, petroleum related pollution seems to predominate in Jeddah lagoons, whereas carcinogenic contaminants of pyrolytic origin were dominant in Mena Jedda. Additionally, municipal wastewaters were identified as a major source of pollution in Jeddah lagoons. Comparison of the concentrations of individual PAHs and polychlorinated biphenyls with sediment quality guidelines indicates that, despite their high total values, adverse biological effects are unlikely to occur.
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Affiliation(s)
- I Hatzianestis
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece.
| | - C Parinos
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - S Chourdaki
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - E Plakidi
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - Y Abualnaja
- Red Sea Research Center, King Abdullah University of Science and Technology, Thuwal, Jeddah 23955-6900, Saudi Arabia.
| | - I Hoteit
- Climate Change Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - J Churchill
- Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
| | - D Papageorgiou
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - V P Papadopoulos
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - Y Alshehri
- National Center for Environmental Compliance, Riyadh 13241-3000, Saudi Arabia
| | - A Pavlidou
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
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Schroeder K, Kovačević V, Civitarese G, Velaoras D, Álvarez M, Tanhua T, Jullion L, Coppola L, Bensi M, Ursella L, Santinelli C, Giani M, Chiggiato J, Aly-Eldeen M, Assimakopoulou G, Bachi G, Bogner B, Borghini M, Cardin V, Cornec M, Giannakourou A, Giannoudi L, Gogou A, Golbol M, Hazan O, Karthäuser C, Kralj M, Krasakopoulou E, Matić F, Mihanović H, Muslim S, Papadopoulos VP, Parinos C, Paulitschke A, Pavlidou A, Pitta E, Protopapa M, Rahav E, Raveh O, Renieris P, Reyes-Suarez NC, Rousselaki E, Silverman J, Souvermezoglou E, Urbini L, Zeri C, Zervoudaki S. Seawater physics and chemistry along the Med-SHIP transects in the Mediterranean Sea in 2016. Sci Data 2024; 11:52. [PMID: 38195581 PMCID: PMC10776779 DOI: 10.1038/s41597-023-02835-3] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 12/08/2023] [Indexed: 01/11/2024] Open
Abstract
The Mediterranean Sea has been sampled irregularly by research vessels in the past, mostly by national expeditions in regional waters. To monitor the hydrographic, biogeochemical and circulation changes in the Mediterranean Sea, a systematic repeat oceanographic survey programme called Med-SHIP was recommended by the Mediterranean Science Commission (CIESM) in 2011, as part of the Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP). Med-SHIP consists of zonal and meridional surveys with different frequencies, where comprehensive physical and biogeochemical properties are measured with the highest international standards. The first zonal survey was done in 2011 and repeated in 2018. In addition, a network of meridional (and other key) hydrographic sections were designed: the first cycle of these sections was completed in 2016, with three cruises funded by the EU project EUROFLEETS2. This paper presents the physical and chemical data of the meridional and key transects in the Western and Eastern Mediterranean Sea collected during those cruises.
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Affiliation(s)
- Katrin Schroeder
- Consiglio Nazionale delle Ricerche-Istituto di Scienze Marine (CNR-ISMAR), Venice and La Spezia, Italy.
| | - Vedrana Kovačević
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | - Giuseppe Civitarese
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | - Dimitris Velaoras
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
| | - Marta Álvarez
- Instituto Español de Oceanografía, IEO-CSIC, A Coruña, Spain
| | - Toste Tanhua
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | | | - Laurent Coppola
- Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, Villefranche-sur-Mer, France
- Sorbonne Université, CNRS, OSU STAMAR, UAR2017, 4 Place Jussieu, 75252, Paris, cedex, 05, France
| | - Manuel Bensi
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | - Laura Ursella
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | - Chiara Santinelli
- Consiglio Nazionale delle Ricerche-Istituto di Biofisica (CNR-IBF), Pisa, Italy
| | - Michele Giani
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | - Jacopo Chiggiato
- Consiglio Nazionale delle Ricerche-Istituto di Scienze Marine (CNR-ISMAR), Venice and La Spezia, Italy
| | | | | | - Giancarlo Bachi
- Consiglio Nazionale delle Ricerche-Istituto di Biofisica (CNR-IBF), Pisa, Italy
| | - Boie Bogner
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Mireno Borghini
- Consiglio Nazionale delle Ricerche-Istituto di Scienze Marine (CNR-ISMAR), Venice and La Spezia, Italy
| | - Vanessa Cardin
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | - Marin Cornec
- Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, Villefranche-sur-Mer, France
| | - Antonia Giannakourou
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
| | - Louisa Giannoudi
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
| | - Alexandra Gogou
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
| | - Melek Golbol
- Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, Villefranche-sur-Mer, France
| | - Or Hazan
- Israel Oceanographic and Limnological Research, IOLR, Haifa, Israel
| | | | - Martina Kralj
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | | | - Frano Matić
- University Department of Marine Studies, University of Split, Split, Croatia
| | | | - Stipe Muslim
- University Department of Marine Studies, University of Split, Split, Croatia
| | | | - Constantine Parinos
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
| | | | - Alexandra Pavlidou
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
| | - Elli Pitta
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
| | - Maria Protopapa
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
| | - Eyal Rahav
- Israel Oceanographic and Limnological Research, IOLR, Haifa, Israel
| | - Ofrat Raveh
- Israel Oceanographic and Limnological Research, IOLR, Haifa, Israel
| | - Panagiotis Renieris
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
| | | | - Eleni Rousselaki
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
| | - Jacop Silverman
- Israel Oceanographic and Limnological Research, IOLR, Haifa, Israel
| | | | - Lidia Urbini
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | - Christina Zeri
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
| | - Soultana Zervoudaki
- Hellenic Centre for Marine Research, HCMR, Institute of Oceanography, Anavyssos, Greece
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Kontoyiannis H, Pavlidou A, Zeri C, Krasakopoulou E, Simboura N, Hatzianestis I, Papadopoulos VP, Rousselaki E, Asimakopoulou G, Siokou I. Thirty years of a bottom oxygen depletion-renewal cycle in the coastal yet deep environment of the West Saronikos Gulf (Greece): Its drivers and the impact on the benthic communities. Sci Total Environ 2023; 902:166025. [PMID: 37562620 DOI: 10.1016/j.scitotenv.2023.166025] [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: 06/26/2023] [Revised: 08/01/2023] [Accepted: 08/01/2023] [Indexed: 08/12/2023]
Abstract
In the period 1987-2017, a series of physical and chemical measurements related to oxygen variability at a trough area with a maximum depth of ~420 m in the West Saronikos Gulf, reveal the following: In the early 90s, deep winter mixing occurred resulting in an oxygenation down to ~420 m followed by an oxygen decline. This decline reached near-bottom hypoxic conditions (O2 < ~62 μM (μmol/L)) after 1998, while a denitrification phase occurred after 2000 and a complete bottom anoxia in 2005. In June 2012, an oxygenation down to ~350 m was detected that most likely occurred in winter 2012. The 2012 oxygenation raised the until-then anoxic bottom concentrations to hypoxic ones in the years towards 2017 via vertical diffusive oxygen transfer. Observations of the benthic communities during the hypoxia, severe hypoxia (O2 < ~15 μM) and oxygen recovery phases showed a peak of opportunists in the hypoxia and a long faunal depletion in the severe hypoxia phases. A reversal in the benthic community structure appeared after the oxygenation of 2012 with the (re)appearance of opportunists while, in 2017, the community showed signs of retreat to earlier stages. The main anthropogenic pressure that could tentatively affect the oxygen concentration in the study area is posed by the Athens treated-sewage outfall at ~40 km away from the trough, which inputs organic matter into the Saronikos Gulf through effluent water of reduced salinity that, in addition, may alter the stratification opposing the vertical mixing. We show that the treated sewage output had no influence on a) the stratification, b) the particulate and dissolved organic carbon and c) the sewage-derived organic matter. Instead, the long-term dissolved oxygen variability with the deep renewal events was mostly driven by the large-scale atmosphere-ocean conditions (heat exchange and evaporation-minus-precipitation budget) that determine the hydrographic characteristics and the winter mixing.
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Affiliation(s)
| | - Alexandra Pavlidou
- Hellenic Centre for Marine Research, Institute of Oceanography, Anavyssos, Greece.
| | - Christina Zeri
- Hellenic Centre for Marine Research, Institute of Oceanography, Anavyssos, Greece
| | | | - Nomiki Simboura
- Hellenic Centre for Marine Research, Institute of Oceanography, Anavyssos, Greece
| | - Ioannis Hatzianestis
- Hellenic Centre for Marine Research, Institute of Oceanography, Anavyssos, Greece
| | | | - Eleni Rousselaki
- Hellenic Centre for Marine Research, Institute of Oceanography, Anavyssos, Greece
| | | | - Ioanna Siokou
- Hellenic Centre for Marine Research, Institute of Oceanography, Anavyssos, Greece
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Tzempelikou E, Parinos C, Zeri C, Hatzianestis I, Abualnaja Y, Hoteit I, Plakidi E, Chourdaki S, Iliakis S, Papadopoulos VP, Pavlidou A. Pollution status determination using trace metals and organic contaminants of the water column in coastal areas of the Red Sea and the Gulf of Aqaba: A baseline assessment. Mar Pollut Bull 2023; 194:115379. [PMID: 37567128 DOI: 10.1016/j.marpolbul.2023.115379] [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: 07/10/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023]
Abstract
Herein, we aim to provide a baseline assessment of the pollution status of the water column in coastal areas of Saudi Arabia (Red Sea and the Gulf of Aqaba), using trace metals (Cd, Co, Cr, Cu, Ni, Pb and Zn), total petroleum hydrocarbons (TPHs) and polycyclic aromatic hydrocarbons (PAHs), in seawater samples obtained from 71 sampling stations in June-July 2021. Concerning trace metals, the maximum concentrations for Co, Cu and Ni were detected in Al-Shuqaiq, whereas the highest Pb and Zn concentrations were found in the Jeddah lagoon waters. Elevated concentrations of TPHs and the highest sum of PAHs were recorded in surface waters of Al Lith, Jeddah lagoon and Jeddah Mena. Overall, the concentrations of all trace metals, TPHs and individual PAHs for which environmental standards have been stipulated for the Kingdom of Saudi Arabia fall well below the threshold values.
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Affiliation(s)
- E Tzempelikou
- Hellenic Centre for Marine Research (H.C.M.R.), Institute of Oceanography, 46.7 Km Athens-Sounio ave., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - C Parinos
- Hellenic Centre for Marine Research (H.C.M.R.), Institute of Oceanography, 46.7 Km Athens-Sounio ave., Mavro Lithari, 19013 Anavyssos, Attiki, Greece.
| | - C Zeri
- Hellenic Centre for Marine Research (H.C.M.R.), Institute of Oceanography, 46.7 Km Athens-Sounio ave., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - I Hatzianestis
- Hellenic Centre for Marine Research (H.C.M.R.), Institute of Oceanography, 46.7 Km Athens-Sounio ave., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - Y Abualnaja
- King Abdullah University of Science and Technology (KAUST), Red Sea Research Center, Thuwal, Jeddah 23955-6900, Saudi Arabia.
| | - I Hoteit
- King Abdullah University of Science and Technology (KAUST), Physical Sciences and Engineering Division, Thuwal, Jeddah 23955-6900, Saudi Arabia
| | - E Plakidi
- Hellenic Centre for Marine Research (H.C.M.R.), Institute of Oceanography, 46.7 Km Athens-Sounio ave., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - S Chourdaki
- Hellenic Centre for Marine Research (H.C.M.R.), Institute of Oceanography, 46.7 Km Athens-Sounio ave., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - S Iliakis
- Hellenic Centre for Marine Research (H.C.M.R.), Institute of Oceanography, 46.7 Km Athens-Sounio ave., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - V P Papadopoulos
- Hellenic Centre for Marine Research (H.C.M.R.), Institute of Oceanography, 46.7 Km Athens-Sounio ave., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - A Pavlidou
- Hellenic Centre for Marine Research (H.C.M.R.), Institute of Oceanography, 46.7 Km Athens-Sounio ave., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
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Povinec PP, Papadopoulos VP, Krokos G, Abualnaja Y, Pavlidou A, Kontuľ I, Kaizer J, Cherkinsky A, Molnár A, Molnár M, Palcsu L, Al Ghamdi AS, Anber HA, Al Othman AS, Hoteit I. Tritium and radiocarbon in the water column of the Red Sea. J Environ Radioact 2023; 256:107051. [PMID: 36327526 DOI: 10.1016/j.jenvrad.2022.107051] [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: 03/31/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Despite being the busiest transient sea in the world due to the Suez Canal, radionuclide distribution studies in seawater and sediment of the Red Sea remain rare. A sampling expedition in the Red Sea was conducted from June 9 to July 6, 2021, visiting a transect of several deep sampling stations located along the central axis of the basin from the Gulf of Aqaba to the southern Red Sea (near Farasan Island, Saudi Arabia). The collected seawater profile samples were analyzed for tritium, radiocarbon and oxygen-18. The observed tritium levels in surface waters of the Red Sea peaked at 0.3-0.4 TU, similar to the values observed in the western Arabian Sea (decay corrected). The values observed at waters below 150 m were around 0.2 TU, however, at depths of 450 and 750 m, tritium minima (<0.2 TU) were observed, which could be associated with a partial return flow of bottom waters from the southern to the northern Red Sea. At two stations at the depth of about 550 m, deep Δ14C minima were observed as well (-4‰ and -10‰), documenting ongoing transport of carbon in the water column, important for sink of anthropogenic carbon.
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Affiliation(s)
- P P Povinec
- Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava, 84248, Slovakia.
| | - V P Papadopoulos
- Institute of Oceanography, Hellenic Centre for Marine Research, Anavyssos, 19013, Greece
| | - G Krokos
- Institute of Oceanography, Hellenic Centre for Marine Research, Anavyssos, 19013, Greece; Earth Sciences and Engineering Department, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
| | - Y Abualnaja
- Red Sea Research Center, King Abdullah University for Science and Technology, Thuwal, 23955, Saudi Arabia
| | - A Pavlidou
- Institute of Oceanography, Hellenic Centre for Marine Research, Anavyssos, 19013, Greece
| | - I Kontuľ
- Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava, 84248, Slovakia
| | - J Kaizer
- Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava, 84248, Slovakia
| | - A Cherkinsky
- Center for Applied Isotope Studies, University of Georgia, Athens, GA, 30602-4702, USA
| | - A Molnár
- Isotoptech Zrt., H-4026, Debrecen, Hungary; University of Debrecen, Doctoral School of Physics, H-4026, Debrecen, Hungary
| | - M Molnár
- University of Debrecen, Doctoral School of Physics, H-4026, Debrecen, Hungary; INTERACT Centre, Institute for Nuclear Research, H-4026, Debrecen, Hungary
| | - L Palcsu
- Institute for Nuclear Research, Hungarian Academy of Sciences, Debrecen, Hungary
| | - A S Al Ghamdi
- National Center for Environmental Compliance, Jeddah, Saudi Arabia
| | - H A Anber
- National Center for Environmental Compliance, Jeddah, Saudi Arabia
| | - A S Al Othman
- National Center for Environmental Compliance, Jeddah, Saudi Arabia
| | - I Hoteit
- Earth Sciences and Engineering Department, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
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Karvelas A, Martinez-Gonzalez B, Papadopoulos VP, Panopoulou M, Sgouras D, Mimidis K. Real-time PCR detection of Helicobacter pylori clarithromycin resistance in Thrace, Greece. Hippokratia 2021; 25:51-55. [PMID: 35937513 PMCID: PMC9347348] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND Growing resistance to clarithromycin is a major concern regarding treating Helicobacter pylori (H. pylori) infection. Resistance rates have a great variation even in different geographic areas within the same country and are associated with point mutations of the microbial 23S rRNA (A2142C, A2142G, and A2143G). Given the absence of available data in Thrace, the objective of this study was to estimate the resistance of H. pylori to clarithromycin and identify specific mutations that contribute to clarithromycin resistance. METHODS In this prospective study, we enrolled consecutive patients referred for dyspeptic complaints who underwent upper gastrointestinal endoscopy over two years. Gastric biopsies from corpus and antrum were initially tested for the presence of urease by a rapid urease test. Urease positive samples were followed by real-time PCR to confirm the presence of H. pylori and to detect point mutations. RESULTS A total of one hundred and thirty patients were included in the study (72 women and 58 men). Resistance to clarithromycin was detected at 23.2 %. Neither gender nor age was independently correlated with resistance rate in our patient group. The most common mutations were A2142G and A2143G. CONCLUSIONS A high rate of H. pylori resistance to clarithromycin was observed in our region, implicating that it should be addressed in accordance with the recommendations provided by national and international guidelines. Molecular testing should be considered an integral tool for effective monitoring in case of suspected antibiotic resistance. HIPPOKRATIA 2021, 25 (2):51-55.
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Affiliation(s)
- A Karvelas
- Laboratory of Medical Microbiology, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - B Martinez-Gonzalez
- Laboratory of Medical Microbiology, Hellenic Pasteur Institute, Athens, Greece
| | - V P Papadopoulos
- Department of Internal Medicine, General Hospital of Xanthi, Xanthi, Greece
| | - M Panopoulou
- Laboratory of Medical Microbiology, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - D Sgouras
- Laboratory of Medical Microbiology, Hellenic Pasteur Institute, Athens, Greece
| | - K Mimidis
- First Department of Internal Medicine, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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Pavlidou A, Papadopoulos VP, Hatzianestis I, Simboura N, Patiris D, Tsabaris C. Chemical inputs from a karstic submarine groundwater discharge (SGD) into an oligotrophic Mediterranean coastal area. Sci Total Environ 2014; 488-489:1-13. [PMID: 24814032 DOI: 10.1016/j.scitotenv.2014.04.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 04/15/2014] [Accepted: 04/15/2014] [Indexed: 06/03/2023]
Abstract
The impacts of nutrient and other chemical inputs released by a submarine groundwater discharge (SGD) on the marine environment of an oligotrophic Mediterranean coastal area (Messiniakos Gulf, SE Ionian Sea) are investigated through a multidisciplinary approach. Nutrients and organic pollutants associated with the SGD are presented to study the chemical characteristics of the SGD and to investigate its effect on the marine ecosystem in comparison to freshwater discharges of the water bodies of Messinia Prefecture. Nutrient and organic pollutant fluxes were calculated from (214)Bi-based SGD estimates. An average of 22×10(3) mol of silicate per month and 8×10(3) mol of nitrate per month were released via the SGD. Nutrient concentrations at the mouth of the SGD were three times higher than in Messiniakos Gulf, and NO3(-) was the primary Dissolved Inorganic Nitrogen form discharged by SGD. Organic pollutant concentrations associated with agricultural activities were low at the SGD. The implementation of a Eutrophication Index (E.I.) showed that the water column at the SGD site corresponds to Moderate/Bad ecological quality, whereas the status switches rapidly to Good at a small distance from the SGD. Coastal areas influenced by river or sewage discharge correspond to a Moderate/Good ecological status. The BENTIX index used for the classification of the ecological quality status of the benthic macroinvertebrate communities showed that the SGD has a minor influence compared to the other freshwater discharges in Messiniakos Gulf. Though the SGD has a considerable outflow, morphology and hydrodynamics of the area favor the rapid dispersion of the upwelling water and degrades the SGD's effect even on a regional scale.
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Affiliation(s)
- Alexandra Pavlidou
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), 46.7 Km Athens-Sounio Av., Anavyssos 19013, Greece.
| | - Vassilis P Papadopoulos
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), 46.7 Km Athens-Sounio Av., Anavyssos 19013, Greece
| | - Ioannis Hatzianestis
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), 46.7 Km Athens-Sounio Av., Anavyssos 19013, Greece
| | - Nomiki Simboura
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), 46.7 Km Athens-Sounio Av., Anavyssos 19013, Greece
| | - Dionisis Patiris
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), 46.7 Km Athens-Sounio Av., Anavyssos 19013, Greece
| | - Christos Tsabaris
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), 46.7 Km Athens-Sounio Av., Anavyssos 19013, Greece
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8
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Tsabaris C, Patiris DL, Karageorgis AP, Eleftheriou G, Papadopoulos VP, Georgopoulos D, Papathanassiou E, Povinec PP. In-situ radionuclide characterization of a submarine groundwater discharge site at Kalogria Bay, Stoupa, Greece. J Environ Radioact 2012; 108:50-59. [PMID: 21906856 DOI: 10.1016/j.jenvrad.2011.08.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 07/27/2011] [Accepted: 08/05/2011] [Indexed: 05/31/2023]
Abstract
In-situ underwater gamma-ray spectrometer KATERINA was used for continuous measurements of radon progenies ((214)Pb, (214)Bi), thoron progeny ((208)Tl) and (40)K in submarine groundwater discharge (SGD) sites at Kalogria Bay, SW Peloponnesus (Greece). The spectrometer was deployed attached on measuring platform along with two conductivity - temperature data loggers while underwater battery packs supplied the system for acquisition periods up to 25 days. The radionuclide time series together with salinity data were obtained for spring (wet) and summer (dry) seasons. The (40)K activity concentrations correlated well with salinity of the emanating groundwater. Although the (214)Bi and (208)Tl activities showed usually similar trends anticorrelating with salinity, in some cases (208)Tl did not follow the (214)Bi record due to changes in the dynamics of the groundwater aquifer. As the half-life of (220)Rn is very short (55.6 s), its concentration in SGD may depend on the distance from its origin to the monitoring point. The observed temporal variations of (214)Bi and (208)Tl confirmed advantages of continuous in-situ monitoring of SGD in coastal areas.
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Affiliation(s)
- Christos Tsabaris
- Hellenic Centre for Marine Research, Institute of Oceanography, 19013 Anavyssos Attica, P.O. 712, Greece.
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Mitroulis I, Papadopoulos VP, Konstantinidis T, Ritis K. Anakinra suppresses familial Mediterranean fever crises in a colchicine-resistant patient. Neth J Med 2008; 66:489-491. [PMID: 19075317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We describe a 34-year-old male patient suffering from familial Mediterranean fever and experiencing an increase in both the frequency and severity of disease attacks, suggesting resistance to chronic treatment with colchicine. Since no alternative treatment is established, anakinra, an interleukin-1 receptor antagonist, was administered, not daily, as it has been previously reported, but only during crises, with successful outcome.
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Affiliation(s)
- I Mitroulis
- First Division of Internal Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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