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Barrientos C, Tapia J, Bertrán C, Peña-Cortés F, Hauenstein E, Fierro P, Vargas-Chacoff L. Is eating wild rainbow trout safe? The effects of different land-uses on heavy metals content in Chile. Environ Pollut 2019; 254:112995. [PMID: 31401525 DOI: 10.1016/j.envpol.2019.112995] [Citation(s) in RCA: 5] [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: 05/16/2019] [Revised: 07/22/2019] [Accepted: 08/01/2019] [Indexed: 06/10/2023]
Abstract
Cu, Mn, Fe, Zn, Cd and Pb levels were measured in liver and muscle samples of Rainbow Trout Oncorhynchus mykiss collected from three watersheds with different land-uses: native forest, exotic plantation, and agriculture in Chile, during January, April, July, and October 2012. Cd and Pb levels were not detected in the liver and muscle, probably since they are under the detection limits. Higher metal concentrations (liver-muscle tissues) were detected in samples from agriculture and exotic plantation streams, whereas trout from native forest streams had lower metal concentrations. Higher metal concentrations were detected in liver tissue compared to muscle tissue, and both negatively correlated to the length and weight of the fish. This suggest the liver had higher ability to accumulate Cu, Mn, Fe and Zn compared to muscle tissue. The concentration range of Fe and Zn recorded in the muscle are within the range reported by other authors, whereas Mn and Cu concentrations are higher than reported in the literature. However, at all sites the concentration of selected metals were below the limits permitted by current legislation (FAO), and therefore did not put the human population at risk, suggesting that is eating wild rainbow trout safe in Chile.
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Affiliation(s)
- C Barrientos
- Institute of Marine Science and Limnology, Universidad Austral de Chile, Chile.
| | - J Tapia
- Institute of Chemistry and Natural Resources, Universidad de Talca, Chile
| | - C Bertrán
- Institute of Marine Science and Limnology, Universidad Austral de Chile, Chile
| | - F Peña-Cortés
- Territorial Planning Laboratory, Universidad Católica de Temuco, Chile
| | - E Hauenstein
- Territorial Planning Laboratory, Universidad Católica de Temuco, Chile
| | - P Fierro
- Institute of Marine Science and Limnology, Universidad Austral de Chile, Chile.
| | - L Vargas-Chacoff
- Institute of Marine Science and Limnology, Universidad Austral de Chile, Chile; FONDAP-IDEAL Center, Universidad Austral de Chile, Valdivia, Chile.
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Tapia J, Villagra F, Bertrán C, Espinoza J, Focardi S, Fierro P, Tapia C, Pizarro R, Vargas-Chacoff L. Effect of the earthquake-tsunami (Chile, 2010) on toxic metal content in the Chilean abalone mollusc Concholepas concholepas. Ecotoxicol Environ Saf 2019; 169:418-424. [PMID: 30469027 DOI: 10.1016/j.ecoenv.2018.11.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 11/07/2018] [Accepted: 11/09/2018] [Indexed: 06/09/2023]
Abstract
Toxic metal content were measured in samples of mollusc Concholepas concholepas obtained from the Chilean coast. Samples were collected during two periods, one before and one after the earthquake-tsunami which occurred in the Maule Region, Chile, February 27th, 2010 as a result of an earthquake with a magnitude of 8.8. Quantification of toxic metals in samples of hepatopancreas and muscle tissue was performed using flame atomic absorption spectroscopy. The analytical methodology was validated with certified reference material. The content means measured in muscle tissue for January 2010 were Cu: 10.3; Cr: 0.7; Cd: < 0.1; Mn: 3.6 and Zn: 38.6 µg g-1 (dry weight). For October 2014, the means were Cu: 8; Cr: 2.4; Cd: < 0.1; Mn: 5.6 and Zn: 45.4 µg g-1 (dry weight). In hepatopancreas tissue, the content means were Cu: 14.8; Cr: 2.4; Cd: 246.2; Mn: 4.4 and Zn: 1552.9 µg g-1 (dry weight). For October 2014, the means were Cu: 53.7; Cr: 3.5; Cd: 118; Mn: 13.4 and Zn: 1352.3 µg g-1 (dry weight). Cd, Cr, Cu, Mn and Zn content in the samples of hepatopancreas were generally higher than those recorded in muscle tissue however they were not always statistically significant. Statistical analysis showed that Cu and Mn content in the post-tsunami period increased in the hepatopancreas tissue. The concentrations of Cd, Cr, Cu, Mn, and Zn measured in the muscular tissue (edible part) of the species Conchalepas concholepas, were lower than the maximum contents allowed by the current legislation (FAO/WHO, 2004; EU, 2001) and its consumption is not a risk to human health.
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Affiliation(s)
- J Tapia
- Institute of Natural Resources Chemistry, University of Talca, Talca, Chile.
| | - F Villagra
- Institute of Natural Resources Chemistry, University of Talca, Talca, Chile
| | - C Bertrán
- Institute of Marine Science and Limnology, Austral University of Chile, Valdivia, Chile
| | - J Espinoza
- Institute of Natural Resources Chemistry, University of Talca, Talca, Chile
| | - S Focardi
- Department of Physical, Earth and Environmental Sciences, University of Siena, Siena, Italy
| | - P Fierro
- Institute of Marine Science and Limnology, Austral University of Chile, Valdivia, Chile
| | - C Tapia
- Faculty of Health, School of Nutrition and Dietetics, University of Talca, Talca, Chile; CESFAM, Loma Colorada, San Pedro de la Paz, Región del Bío-Bío, Chile
| | - R Pizarro
- Faculty of Forest Sciences, University of Talca, Talca, Chile
| | - L Vargas-Chacoff
- Institute of Marine Science and Limnology, Austral University of Chile, Valdivia, Chile; Fondap-IDEAL Center Austral University of Chile, Valdivia, Chile.
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Silva-Rodríguez J, Aguiar P, Domínguez-Prado I, Fierro P, Ruibal Á. Simulated FDG-PET studies for the assessment of SUV quantification methods. Rev Esp Med Nucl Imagen Mol 2014; 34:13-8. [PMID: 25107595 DOI: 10.1016/j.remn.2014.07.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 07/08/2014] [Accepted: 07/09/2014] [Indexed: 11/30/2022]
Abstract
AIM To study in detail the accuracy and repeatability of three commonly used methods for SUV estimation in solitary pulmonary nodules. MATERIAL AND METHODS We have designed a realistic framework based on simulated FDG-PET acquisitions from an anthropomorphic activity model that included solitary pulmonary nodules (different sizes) of well-known SUV. This framework enables us to compare the SUV values obtained from the reconstructed PET images with the real SUV values. Three commonly used methods (SUVmax, SUVmean and SUV50) were used to estimate the tumor activity. RESULTS Our results showed the tumor activity was overestimated using SUVmax and clearly subestimated using SUVmean. Instead, the quantification of SUV50 showed great agreement with the simulated tumor activity and only slight subestimation was found for very small lesions. On the other hand, SUVmean showed better performance than SUV50 in terms of repeatability, providing variabilities below 5% for all tumor sizes and for injected doses as low as 111 MBq. CONCLUSIONS Our findings showed that SUV50 provided better performance for estimating accurately tumor SUV values in pulmonary nodules, but SUVmean showed better results in terms of repeatability.
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Affiliation(s)
- J Silva-Rodríguez
- Grupo de Imaxe Molecular e Oncoloxía, Instituto de Investigación Sanitarias (IDIS), Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain; L2A2-USC, Facultade de Física, Universidade de Santiago de Compostela, Praza do Obradoiro, s/n, 15782, Santiago de Compostela, A Coruña, Galicia, Spain
| | - P Aguiar
- Grupo de Imaxe Molecular e Oncoloxía, Instituto de Investigación Sanitarias (IDIS), Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain; In Vivo Molecular Imaging Group (IMIG), Facultade de Medicina, Universidade de Santiago de Compostela, Praza do Obradoiro, s/n, 15782, Santiago de Compostela, A Coruña, Galicia, Spain.
| | - I Domínguez-Prado
- Servicio de Medicina Nuclear, Complexo Hospitalario Universitario de Santiago de Compostela, Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain
| | - P Fierro
- Servicio de Medicina Nuclear, Complexo Hospitalario Universitario de Santiago de Compostela, Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain
| | - Á Ruibal
- Grupo de Imaxe Molecular e Oncoloxía, Instituto de Investigación Sanitarias (IDIS), Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain; In Vivo Molecular Imaging Group (IMIG), Facultade de Medicina, Universidade de Santiago de Compostela, Praza do Obradoiro, s/n, 15782, Santiago de Compostela, A Coruña, Galicia, Spain; Servicio de Medicina Nuclear, Complexo Hospitalario Universitario de Santiago de Compostela, Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain; Fundación Tejerina, Calle de José Abascal 40, 28003 Madrid, Spain
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Suwalsky M, Fierro P, Villena F, Aguilar LF, Sotomayor CP, Jemiola-Rzeminska M, Strzalka K, Gul-Hinc S, Ronowska A, Szutowicz A. Human erythrocytes and neuroblastoma cells are in vitro affected by sodium orthovanadate. Biochim Biophys Acta 2012; 1818:2260-70. [PMID: 22546530 DOI: 10.1016/j.bbamem.2012.04.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 03/29/2012] [Accepted: 04/16/2012] [Indexed: 11/25/2022]
Abstract
Research on biological influence of vanadium has gained major importance because it exerts potent toxic, mutagenic, and genotoxic effects on a wide variety of biological systems. However, hematological toxicity is one of the less studied effects. The lack of information on this issue prompted us to study the structural effects induced on the human erythrocyte membrane by vanadium (V). Sodium orthovanadate was incubated with intact erythrocytes, isolated unsealed human erythrocyte membranes (IUM) and molecular models of the erythrocyte membrane. The latter consisted of bilayers of dimyristoylphosphatidylcholine (DMPC) and dimyristoylphosphatidylethanolamine (DMPE), phospholipid classes located in the outer and inner monolayers of the human erythrocyte membrane, respectively. This report presents evidence in order that orthovanadate interacted with red cell membranes as follows: a) in scanning electron microscopy (SEM) studies it was observed that morphological changes on human erythrocytes were induced; b) fluorescence spectroscopy experiments in isolated unsealed human erythrocyte membranes (IUM) showed that an increase in the molecular dynamics and/or water content at the shallow depth of the lipids glycerol backbone at concentrations as low as 50μM was produced; c) X-ray diffraction studies showed that orthovanadate 0.25-1mM range induced increasing structural perturbation to DMPE; d) somewhat similar effects were observed by differential scanning calorimetry (DSC) with the exception of the fact that DMPC pretransition was shown to be affected; and e) fluorescence spectroscopy experiments performed in DMPC large unilamellar vesicles (LUV) showed that at very low concentrations induced changes in DPH fluorescence anisotropy at 18°C. Additional experiments were performed in mice cholinergic neuroblastoma SN56 cells; a statistically significant decrease of cell viability was observed on orthovanadate in low or moderate concentrations.
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Affiliation(s)
- M Suwalsky
- Faculty of Chemical Sciences, University of Concepción, Concepción, Chile.
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Pannone G, Sanguedolce F, Santoro A, Fierro P, Panetti M, Fierro D, Maiello F, De Maria S, Giannattasio A, Serpico R, Lo Muzio L, Metafora S, Bufo P. Detection of novel Human papilloma virus type 82 in laryngeal cancer: case report. Auris Nasus Larynx 2010; 37:648-50. [PMID: 20417042 DOI: 10.1016/j.anl.2010.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Revised: 02/10/2010] [Accepted: 03/04/2010] [Indexed: 10/19/2022]
Abstract
Human papilloma virus infection is thought to play a role in laryngeal carcinogenesis; the variable association reported in literature may be due to wide range of HPV genotypes. We report the case of a 51-year-old man affected by laryngeal squamous cell carcinoma; analysis of DNA extracted by cancer cells by an innovative molecular virology assay (INNO-LiPA HPV Genotyping Extra) showed the presence of two high-risk HPV genotypes, HPV-73 and -82. Immunohistochemical examination confirmed positivity for both capsid protein and viral oncogenic protein E7. Such association has never been reported in literature so far, and a brief discussion on the importance of assessing HPV status in laryngeal cancer is provided.
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Affiliation(s)
- G Pannone
- Department of Surgical Sciences, Institute of Pathology and Cytopathology, University of Foggia, Viale Pinto, Foggia, Italy
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Giannattasio A, Fierro P, Panetti G, Smeraglia R, Cusi M, Galano G, Coppola C. PRESENZA DI PAPILLOMAVIRUS AD ALTO RISCHIO ONCOGENICO IN UNA METASTASI DI UN CARCINOMA DELLA LARINGE. Microbiol Med 2006. [DOI: 10.4081/mm.2006.3233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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