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Plata-Calzado C, Prieto AI, Cameán AM, Jos A. Analytical Methods for Anatoxin-a Determination: A Review. Toxins (Basel) 2024; 16:198. [PMID: 38668623 PMCID: PMC11053625 DOI: 10.3390/toxins16040198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 04/29/2024] Open
Abstract
Anatoxin-a (ATX-a) is a potent neurotoxin produced by several species of cyanobacteria whose exposure can have direct consequences, including neurological disorders and death. The increasing prevalence of harmful cyanobacterial blooms makes the detection and reliable assessment of ATX-a levels essential to prevent the risk associated with public health. Therefore, the aim of this review is to compile the analytical methods developed to date for the detection and quantification of ATX-a levels alone and in mixtures with other cyanotoxins and their suitability. A classification of the analytical methods available is fundamental to make an appropriate choice according to the type of sample, the equipment available, and the required sensitivity and specificity for each specific purpose. The most widely used detection technique for the quantification of this toxin is liquid chromatography-tandem mass spectrometry (LC-MS/MS). The analytical methods reviewed herein focus mainly on water and cyanobacterial samples, so the need for validated analytical methods in more complex matrices (vegetables and fish) for the determination of ATX-a to assess dietary exposure to this toxin is evidenced. There is currently a trend towards the validation of multitoxin methods as opposed to single-ATX-a determination methods, which corresponds to the real situation of cyanotoxins' confluence in nature.
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Affiliation(s)
| | - Ana I. Prieto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González 2, 41012 Seville, Spain; (C.P.-C.); (A.M.C.); (A.J.)
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Hinojosa MG, Johansson Y, Jos A, Cameán AM, Forsby A. Effects of cylindrospermopsin, chlorpyrifos and their combination in a SH-SY5Y cell model concerning developmental neurotoxicity. Ecotoxicol Environ Saf 2024; 269:115804. [PMID: 38091671 DOI: 10.1016/j.ecoenv.2023.115804] [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: 09/06/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 01/12/2024]
Abstract
The cyanotoxin cylindrospermopsin (CYN) has been postulated to cause neurotoxicity, although the studies in this concern are very few. In addition, some studies in vitro indicate its possible effects on development. Furthermore, pesticides can be present in the same environmental samples as cyanotoxins. Therefore, chlorpyrifos (CPF) has been one of the most common pesticides used worldwide. The aim of this report was to study the effects of CYN, isolated and in combination with CPF, in a developmental neurotoxicity in vitro model. The human neuroblastoma SH-SY5Y cell line was exposed during 6 days of differentiation to both toxics to study their effects on cell viability and neurite outgrowth. To further evaluate effects of both toxicants on cholinergic signaling, their agonistic and antagonistic activities on the α7 homomeric nicotinic acetylcholine receptor (nAChR) were studied upon acute exposure. Moreover, a transcriptomic analysis by qPCR was performed after 6 days of CYN-exposure during differentiation. The results showed a concentration-dependent decrease on both cell viability and neurite outgrowth for both toxics isolated, leading to effective concentration 20 (EC20) values of 0.35 µM and 0.097 µM for CYN on cell viability and neurite outgrowth, respectively, and 100 µM and 58 µM for CPF, while the combination demonstrated no significant variations. In addition, 95 µM and 285 µM CPF demonstrated to act as an antagonist to nicotine on the nAChR, although CYN up to 2.4 µM had no effect on the efficacy of these receptors. Additionally, the EC20 for CYN (0.097 µM) on neurite outgrowth downregulated expression of the 5 genes NTNG2 (netrin G2), KCNJ11 (potassium channel), SLC18A3 (vesicular acetylcholine transporter), APOE (apolipoprotein E), and SEMA6B (semaphorin 6B), that are all important for neuronal development. Thus, this study points out the importance of studying the effects of CYN in terms of neurotoxicity and developmental neurotoxicity.
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Affiliation(s)
- M G Hinojosa
- Department of Biochemistry and Biophysics, Stockholm University, 106 91 Stockholm, Sweden; Area of Toxicology, Department of Nutrition and Bromatology, Toxicology and Legal Medicine. Faculty of Pharmacy, University of Seville, C/ Profesor García González 2, 41012 Seville, Spain
| | - Y Johansson
- Department of Biochemistry and Biophysics, Stockholm University, 106 91 Stockholm, Sweden.
| | - A Jos
- Area of Toxicology, Department of Nutrition and Bromatology, Toxicology and Legal Medicine. Faculty of Pharmacy, University of Seville, C/ Profesor García González 2, 41012 Seville, Spain
| | - A M Cameán
- Area of Toxicology, Department of Nutrition and Bromatology, Toxicology and Legal Medicine. Faculty of Pharmacy, University of Seville, C/ Profesor García González 2, 41012 Seville, Spain
| | - A Forsby
- Department of Biochemistry and Biophysics, Stockholm University, 106 91 Stockholm, Sweden
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Cascajosa-Lira A, Guzmán-Guillén R, Arjona AB, Aguinaga-Casañas MA, Ayala-Soldado N, Moyano-Salvago MR, Molina A, Jos Á, Cameán AM, Pichardo S. Risk assessment and environmental consequences of the use of the Allium-derived compound propyl-propane thiosulfonate (PTSO) in agrifood applications. Environ Res 2023; 236:116682. [PMID: 37459943 DOI: 10.1016/j.envres.2023.116682] [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] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023]
Abstract
The organosulfur compound propyl-propane thiosulfonate (PTSO), mainly found in Allium cepa, has a promising use in the agrifood industry. To confirm its safety for livestock, consumers, and environment, toxicological assessment is needed. In this regard, endocrine-disrupting chemicals (EDCs) are in the spotlight of research. Therefore, as part of the risk assessment of PTSO, in the present work, an in vivo study was performed in mice exposed to PTSO to investigate its potential reproductive toxicity considering fertility, genetic and endocrine endpoints. Five-weeks-old CD1 mice (80 males, 80 females) were exposed for 11 or 16 weeks (males or females, respectively) to different doses of PTSO (0, 14, 28 and 55 mg PTSO/kg b.w./day; 20 animals per group and sex) through the food pellets. No clinical observations or mortality and no changes in absolute organ weights and relative organ weights/body weight or brain ratios occurred during the study. The estrous cycle did not undergo any significant toxicologically relevant change. Most of the sex hormones displayed normal values. Some alterations in the expression of some genes related to reproduction is only observed in females, but they do not appear to have consequences in the development of sex organs. Docking results showed the impossibility of stable binding to estrogen and androgen receptors. Considering all the results obtained, the safe profile of PTSO can be confirmed for different agrifood applications at the conditions assayed.
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Affiliation(s)
| | | | | | | | - Nahúm Ayala-Soldado
- Departamento de Anatomía y Anatomía Patológica Comparadas y Toxicología, UIC Zoonosis y Enfermedades Emergentes ENZOEM, Facultad de Veterinaria, Universidad de Córdoba, Campus de Rabanales, Edificio Darwin, 14071, Córdoba, Spain
| | - M Rosario Moyano-Salvago
- Departamento de Anatomía y Anatomía Patológica Comparadas y Toxicología, UIC Zoonosis y Enfermedades Emergentes ENZOEM, Facultad de Veterinaria, Universidad de Córdoba, Campus de Rabanales, Edificio Darwin, 14071, Córdoba, Spain
| | - Ana Molina
- Departamento de Anatomía y Anatomía Patológica Comparadas y Toxicología, UIC Zoonosis y Enfermedades Emergentes ENZOEM, Facultad de Veterinaria, Universidad de Córdoba, Campus de Rabanales, Edificio Darwin, 14071, Córdoba, Spain
| | - Ángeles Jos
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Spain
| | - Ana M Cameán
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Spain
| | - Silvia Pichardo
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Spain
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Cebadero-Domínguez Ó, Diez-Quijada L, López S, Sánchez-Ballester S, Puerto M, Cameán AM, Jos A. Impact of Gastrointestinal Digestion In Vitro Procedure on the Characterization and Cytotoxicity of Reduced Graphene Oxide. Nanomaterials (Basel) 2023; 13:2285. [PMID: 37630872 PMCID: PMC10457766 DOI: 10.3390/nano13162285] [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] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/27/2023]
Abstract
The growing interest in graphene derivatives is a result of their variety of applications in many fields. Due to their use, the oral route could be a potential way of entrance for the general population. This work assesses the biotransformation of reduced graphene oxide (rGO) after an in vitro digestion procedure (mouth, gastric, intestinal, and colon digestion), and its toxic effects in different cell models (HepG2, Caco-2, and 3D intestinal model). The characterization of rGO digestas evidenced the agglomeration of samples during the in vitro gastrointestinal (g.i.) digestion. Internalization of rGO was only evident in Caco-2 cells exposed to the colonic phase and no cellular defects were observed. Digestas of rGO did not produce remarkable cytotoxicity in any of the experimental models employed at the tested concentrations (up to 200 µg/mL), neither an inflammatory response. Undigested rGO has shown cytotoxic effects in Caco-2 cells, therefore these results suggest that the digestion process could prevent the systemic toxic effects of rGO. However, additional studies are necessary to clarify the interaction of rGO with the g.i. tract and its biocompatibility profile.
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Affiliation(s)
- Óscar Cebadero-Domínguez
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Seville, Spain; (Ó.C.-D.); (L.D.-Q.); (A.M.C.)
| | - Leticia Diez-Quijada
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Seville, Spain; (Ó.C.-D.); (L.D.-Q.); (A.M.C.)
| | - Sergio López
- Department of Cell Biology, Faculty of Biology, Universidad de Sevilla, 41012 Seville, Spain;
| | - Soraya Sánchez-Ballester
- Packaging, Transport and Logistic Research Institute, Albert Einstein, 1, Paterna, 46980 Valencia, Spain;
| | - María Puerto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Seville, Spain; (Ó.C.-D.); (L.D.-Q.); (A.M.C.)
| | - Ana M. Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Seville, Spain; (Ó.C.-D.); (L.D.-Q.); (A.M.C.)
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Seville, Spain; (Ó.C.-D.); (L.D.-Q.); (A.M.C.)
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Cascajosa-Lira A, Medrano-Padial C, Pichardo S, de la Torre JM, Baños A, Jos Á, Cameán AM. Identification of in vitro metabolites of an Allium organosulfur compound and environmental toxicity prediction as part of its risk assessment. Environ Res 2023; 229:116001. [PMID: 37116679 DOI: 10.1016/j.envres.2023.116001] [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] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/21/2023]
Abstract
Propyl-propane-thiosulfonate (PTSO) is an organosulfur compound found inAllium spp. Due to its antioxidant and antimicrobial activities, PTSO has been proposed for applications in the agri-food sector, such as feed additive. However, its use with commercial purposes depends on its toxicity evaluation. The present work aimed to perform a pilot-study of toxicokinetic profile of PTSO combining in silico and in vitro techniques, important steps in the risk assessment process. In silico ecotoxicity studies were also performed considering the importance of the environmental impact of the compound before its commercial use. First, an analytical method has been developed and validated to determine the original compound and its metabolites by ultra-performance liquid chromatography-tandem mass spectrometry. The phase I and II metabolism of PTSO was predicted using Meta-Pred Web Server. For the phase I metabolism, rat (male and female) and human liver microsomes were incubated with PTSO and NADPH regeneration system. Furthermore, in the phase II, microsomes were incubated with PTSO and glutathione or uridine 5'- diphosphoglucuronic acid. The analysis revealed the presence of propylpropane thiosulfinate (PTS) originated by redox reaction in phase I, and two conjugates from the phase II: S-propylmercaptoglutathione (GSSP) and S-propylmercaptocysteine (CSSP). Additionally, considering the environmental fate of PTSO and its metabolites, the ADME parameters and the potential ecotoxicity were also predicted using in silico softwares. The results of the ecotoxicity in silico study evidenced that the metabolism induced the formation of detoxified metabolites from the parent compound, except for dimercaprol and 3-mercaptopropane1,2-diol. Further in vivo assays are needed to confirm this prediction.
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Affiliation(s)
- Antonio Cascajosa-Lira
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012, Seville, Spain
| | - Concepción Medrano-Padial
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012, Seville, Spain
| | - Silvia Pichardo
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012, Seville, Spain.
| | | | - Alberto Baños
- DMC Research Center, Camino de Jayena, 82, 18620, Granada, Spain
| | - Ángeles Jos
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012, Seville, Spain
| | - Ana M Cameán
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012, Seville, Spain
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Plata-Calzado C, Diez-Quijada L, Medrano-Padial C, Prieto AI, Cameán AM, Jos A. In Vitro Mutagenic and Genotoxic Assessment of Anatoxin-a Alone and in Combination with Cylindrospermopsin. Toxins (Basel) 2023; 15:458. [PMID: 37505727 PMCID: PMC10467140 DOI: 10.3390/toxins15070458] [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] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/05/2023] [Accepted: 07/11/2023] [Indexed: 07/29/2023] Open
Abstract
Anatoxin-a (ATX-a) is a cyanobacterial toxin whose occurrence has been reported worldwide and has attracted increasing scientific interest due to its toxicity. Moreover, in nature, ATX-a usually appears together with other cyanotoxins, such as cylindrospermopsin (CYN), so possible interaction phenomena could happen and should be considered for risk assessment purposes. For this reason, the aim of this work was to explore the potential mutagenicity and genotoxicity of pure ATX-a and an ATX-a/CYN mixture using a battery of in vitro assays, including the bacterial reverse-mutation assay in Salmonella typhimurium (OECD 471) and the micronucleus test (MN) (OECD 487) on L5178Y Tk+/- cells. The results showed that ATX-a was not mutagenic either alone or in combination with CYN under the conditions tested. Nevertheless, genotoxic effects were observed for both ATX-a and its mixture with CYN following the in vitro MN assay. The genotoxicity exhibited by ATX-a was only observed in the absence of S9 mix, whereas in the cyanotoxin mixture the concentration-dependent genotoxicity of ATX-a/CYN in vitro was observed only in the presence of S9. Thus, the toxicity induced by cyanotoxin mixtures may vary from that produced by toxins alone, and consequently more studies are necessary in order to perform more realistic risk assessments.
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Affiliation(s)
| | | | | | - Ana I. Prieto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González 2, 41012 Seville, Spain; (C.P.-C.); (L.D.-Q.); (C.M.-P.); (A.M.C.)
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Hinojosa MG, Cascajosa-Lira A, Prieto AI, Gutiérrez-Praena D, Vasconcelos V, Jos A, Cameán AM. Cytotoxic Effects and Oxidative Stress Produced by a Cyanobacterial Cylindrospermopsin Producer Extract versus a Cylindrospermopsin Non-Producing Extract on the Neuroblastoma SH-SY5Y Cell Line. Toxins (Basel) 2023; 15:toxins15050320. [PMID: 37235355 DOI: 10.3390/toxins15050320] [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: 03/21/2023] [Revised: 04/27/2023] [Accepted: 05/03/2023] [Indexed: 05/28/2023] Open
Abstract
The incidence and interest of cyanobacteria are increasing nowadays because they are able to produce some toxic secondary metabolites known as cyanotoxins. Among them, the presence of cylindrospermopsin (CYN) is especially relevant, as it seems to cause damage at different levels in the organisms: the nervous system being the one most recently reported. Usually, the effects of the cyanotoxins are studied, but not those exerted by cyanobacterial biomass. The aim of the present study was to assess the cytotoxicity and oxidative stress generation of one cyanobacterial extract of R. raciborskii non-containing CYN (CYN-), and compare its effects with those exerted by a cyanobacterial extract of C. ovalisporum containing CYN (CYN+) in the human neuroblastoma SH-SY5Y cell line. Moreover, the analytical characterization of potential cyanotoxins and their metabolites that are present in both extracts of these cultures was also carried out using Ultrahigh Performance Liquid Chromatography-Mass Spectrometry, in tandem (UHPLC-MS/MS). The results show a reduction of cell viability concentration- and time-dependently after 24 and 48 h of exposure with CYN+ being five times more toxic than CYN-. Furthermore, the reactive oxygen species (ROS) increased with time (0-24 h) and CYN concentration (0-1.11 µg/mL). However, this rise was only obtained after the highest concentrations and times of exposure to CYN-, while this extract also caused a decrease in reduced glutathione (GSH) levels, which might be an indication of the compensation of the oxidative stress response. This study is the first one performed in vitro comparing the effects of CYN+ and CYN-, which highlights the importance of studying toxic features in their natural scenario.
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Affiliation(s)
- María G Hinojosa
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - Antonio Cascajosa-Lira
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - Ana I Prieto
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - Daniel Gutiérrez-Praena
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - Vitor Vasconcelos
- CIIMAR/CIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, 4450-159 Matosinhos, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Angeles Jos
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - Ana M Cameán
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
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Hinojosa MG, Gutiérrez-Praena D, López S, Prieto AI, Moreno FJ, Jos Á, Cameán AM. Toxic effects of the cylindrospermopsin and chlorpyrifos combination on the differentiated SH-SY5Y human neuroblastoma cell line. Toxicon 2023; 227:107091. [PMID: 36965714 DOI: 10.1016/j.toxicon.2023.107091] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/08/2023] [Accepted: 03/20/2023] [Indexed: 03/27/2023]
Abstract
Due to climate change and anthropogenic activities, the levels of pollution of aquatic and terrestrial environments have increased in the last decades. In this sense, the rise of cyanobacterial blooms, which release secondary metabolites with toxic properties, and the global use of pesticides for agricultural purposes have a negative impact on ecosystems. Thus, it would be interesting to study the concomitance of both types of toxicants in the same sample, since it is possible that they appear together. The aim of the present work was to state the effects of the interaction between the cyanotoxin cylindrospermopsin and the pesticide chlorpyrifos in differentiated SH-SY5Y neuronal cells to assess how they could affect the nervous system. To this end, cytotoxicity, morphological, and acetylcholinesterase activity studies were performed during 24 and 48 h. The results revealed a concentration-dependent decrease in viability and interaction between both toxicants, together with clear signs of apoptosis and necrosis induction. In this sense, different stages on the differentiation process would lead to differences in the toxicity exerted by the compounds both isolated as in combination, which it is not observed in non-differentiated cells. Additionally, the acetylcholinesterase activity appeared not to be affected, which is a clear difference compared to non-differentiated cells. These results show the importance of studying not only the toxicants themselves, but also in combination, to assess their possible effects in a more realistic scenario.
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Affiliation(s)
- María G Hinojosa
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012, Sevilla, Spain
| | - Daniel Gutiérrez-Praena
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012, Sevilla, Spain.
| | - Sergio López
- Área de Biología Celular, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes S/n, 41012, Sevilla, Spain; Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen Del Rocío/CSIC/Universidad de Sevilla, 41012, Sevilla, Spain
| | - Ana I Prieto
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012, Sevilla, Spain
| | - Francisco J Moreno
- Área de Biología Celular, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes S/n, 41012, Sevilla, Spain
| | - Ángeles Jos
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012, Sevilla, Spain
| | - Ana M Cameán
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012, Sevilla, Spain
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Casas-Rodriguez A, Cameán AM, Jos A. Potential Endocrine Disruption of Cyanobacterial Toxins, Microcystins and Cylindrospermopsin: A Review. Toxins (Basel) 2022; 14:toxins14120882. [PMID: 36548779 PMCID: PMC9785827 DOI: 10.3390/toxins14120882] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
Microcystins (MCs) and cylindrospermopsin (CYN), although classified as hepatotoxins and cytotoxins, respectively, have been shown to also induce toxic effects in many other systems and organs. Among them, their potential endocrine disruption (ED) activity has been scarcely investigated. Considering the increasing relevance of ED on humans, mammals, and aquatic organisms, this work aimed to review the state-of-the-art regarding the toxic effects of MCs and CYN at this level. It has been evidenced that MCs have been more extensively investigated than CYN. Reported results are contradictory, with the presence or absence of effects, but experimental conditions also vary to a great extent. In general, both toxins have shown ED activity mediated by very different mechanisms, such as estrogenic responses via a binding estrogen receptor (ER), pathological changes in several organs and cells (testis, ovarian cells), and a decreased gonad-somatic index. Moreover, toxic effects mediated by reactive oxygen species (ROS), changes in transcriptional responses on several endocrine axes and steroidogenesis-related genes, and changes in hormone levels have also been reported. Further research is required in a risk assessment frame because official protocols for assessment of endocrine disrupters have not been used. Moreover, the use of advanced techniques would aid in deciphering cyanotoxins dose-response relationships in relation to their ED potential.
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Casas Rodríguez A, Diez-Quijada L, Prieto AI, Jos A, Cameán AM. Effect of cold food storage techniques on the contents of Microcystins and Cylindrospermopsin in leaves of spinach (Spinacia oleracea) and lettuce (Lactuca sativa). Food Chem Toxicol 2022; 170:113507. [PMID: 36334728 DOI: 10.1016/j.fct.2022.113507] [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] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/25/2022] [Accepted: 10/29/2022] [Indexed: 11/05/2022]
Abstract
The presence of Cylindrospermopsin (CYN) and Microcystins (MCs) in vegetables is considered as a significant worldwide toxicological risk. Thus, this work aims to assess for the first time the impact of refrigeration (4 °C) and freezing (-20 °C) on the levels of CYN, MCs and their mixtures (CYN + MCs) in lettuce and spinach. Samples were spiked with 750 μg cyanotoxins/g dry weight (d.w.). Several storage conditions were studied: refrigeration after 24, 48 h and 7 days, and freezing for 7 days, 1 and 3 months. Cyanotoxin concentrations were determined by Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry (UPLC-MS/MS). For CYN, refrigeration at 48 h and 7 days was effective to decrease its concentrations up to 26% and 32%, respectively, in spinach. For MCs, refrigeration was only effective in lettuce compared to spinach, showing an important decrease of 80.3% MC-LR and 85.1% MC-YR. In spinach, CYN was stable after 3 months freezing, whereas MC contents were still reduced up to 44%. Overall, cyanotoxins were less stable in the mixture compared to individual toxins for both processes, and the effect of these storage techniques were toxin and food-specific. Further studies of cyanotoxins in foods are required for evaluating the risk for humans.
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Affiliation(s)
- Antonio Casas Rodríguez
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Profesor García González Nº2, Spain
| | - Leticia Diez-Quijada
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Profesor García González Nº2, Spain
| | - Ana I Prieto
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Profesor García González Nº2, Spain.
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Profesor García González Nº2, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Profesor García González Nº2, Spain
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Cebadero-Domínguez Ó, Jos A, Cameán AM, Cătunescu GM. Hazard characterization of graphene nanomaterials in the frame of their food risk assessment: A review. Food Chem Toxicol 2022; 164:113014. [PMID: 35430331 DOI: 10.1016/j.fct.2022.113014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 02/08/2022] [Revised: 04/04/2022] [Accepted: 04/11/2022] [Indexed: 12/11/2022]
Abstract
Different applications have been suggested for graphene nanomaterials (GFNs) in the food and feed chain. However, it is necessary to perform a risk assessment before they become market-ready, and when consumer exposure is demonstrated. For this purpose, the European Food Safety Authority (EFSA) has published a guidance that has been recently updated. In this sense, the aim of this study is to identify and characterise toxicological hazards related to GFNs after oral exposure. Thus, existing scientific literature in relation to in vitro degradation studies, in vitro and in vivo genotoxicity, toxicokinetics data, in vivo oral studies, and other in-depth studies such as effects on the microbiome has been revised. The obtained results showed that the investigations performed up to now did not follow internationally agreed-upon test guidelines. Moreover, GFNs seemed to resist gastrointestinal digestion and were able to be absorbed, distributed, and excreted, inducing toxic effects at different levels, including genotoxicity. Also, dose has an important role as it has been reported that low doses are more toxic than high doses because GFNs tend to aggregate in the digestive system, changing the internal exposure scenario. Thus, further studies including a thorough toxicological evaluation are required to protect consumer's safety.
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Affiliation(s)
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Spain.
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Spain
| | - Giorgiana M Cătunescu
- University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3-5, 400372, Cluj-Napoca, Romania
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Cascajosa-Lira A, Pichardo S, Baños A, Guillamón E, Molina-Hernández V, Moyano R, Jos Á, Cameán AM. Acute and subchronic 90-days toxicity assessment of propyl-propane-thiosulfinate (PTS) in rats. Food Chem Toxicol 2022; 161:112827. [PMID: 35077829 DOI: 10.1016/j.fct.2022.112827] [Citation(s) in RCA: 1] [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: 10/22/2021] [Revised: 12/07/2021] [Accepted: 01/17/2022] [Indexed: 01/07/2023]
Abstract
The organosulfur compounds (OSC) extracted from Allium spp. exhibit antibacterial, antifungal, and antioxidant properties. The agri-food industry is taking advantage of these properties by using them as natural feed and food additives. In the present work, an acute and a subchronic 90-days toxicity studies have been conducted for the first time to assess the safety of the OSC propyl-propane-thiosulfinate (PTS). Both studies were carried out following the Organization for Economic Co-operation and Development test guidelines (425 and 408, respectively). The acute study provided a maximum tolerated dose (MTD) of 175 mg/kg and the subchronic study established the Non Observed Adverse Effect Level (NOAEL) ≥ 55 mg/kg body weight (b.w.)/day in both sexes. In addition, the subchronic study performed on rats exposed to 14, 28 and 55 mg/kg b.w./day PTS, revealed no changes in any of the hematological parameters measured as well as no differences in body weight and water/food consumption. However, biochemical parameters were altered in some groups, although they were not biologically significant (Ca2+ in female rats, and the thyroids hormones T3 and T4 in rat males). Furthermore, the histopathological assessment evidenced no abnormality on the gastrointestinal, respiratory, lymphoid, urinary, circulatory, nervous, musculoskeletal, and reproductive systems.
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Affiliation(s)
- Antonio Cascajosa-Lira
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012, Seville, Spain
| | - Silvia Pichardo
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012, Seville, Spain.
| | - Alberto Baños
- DMC Research Center, Camino de Jayena, 82, 1862, Alhendín, Spain
| | | | - Verónica Molina-Hernández
- Departamento de Anatomía y Anatomía Patológica Comparadas y Toxicología, Facultad de Veterinaria, Universidad de Córdoba, Campus de Rabanales, 14014, Córdoba, Spain
| | - Rosario Moyano
- Departamento de Anatomía y Anatomía Patológica Comparadas y Toxicología, Facultad de Veterinaria, Universidad de Córdoba, Campus de Rabanales, 14014, Córdoba, Spain
| | - Ángeles Jos
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012, Seville, Spain
| | - Ana M Cameán
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012, Seville, Spain
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Diez-Quijada L, Prieto AI, Guzmán-Guillén R, Cameán AM, Jos Á. Influence of refrigeration and freezing in Microcystins and Cylindrospermopsin concentrations on fish muscle of tilapia (Oreochromis niloticus) and tench (Tinca tinca). Food Chem Toxicol 2021; 158:112673. [PMID: 34801650 DOI: 10.1016/j.fct.2021.112673] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/08/2021] [Accepted: 11/11/2021] [Indexed: 11/15/2022]
Abstract
The consumption of fish contaminated with cyanotoxins is an important public health issue due to their potential adverse effects. The aim of this study was to assess the influence of refrigeration (4 °C) and freezing (-20 °C) on the concentration of Cylindrospermopsin (CYN), Microcystins (MCs) and their combination in tilapia (Oreochromis niloticus) and tench (Tinca tinca). Fish muscle were spiked with a stock solution of each toxin to reach 750 μg/g dry weight (d.w.). Three different periods of time were investigated for each treatment: 24 h, 48 h and 7 days for refrigeration, and 24 h, 7 days and 1 month for freezing. Samples were extracted and quantified by Ultra Performance Liquid Chromatography - Tandem Mass Spectrometry (UPLC-MS/MS). The results showed that freezing for 1 month produced highest decreases of these toxins in both species in comparison to refrigeration, being CYN the most stable cyanotoxin. Moreover, MCs are more stable to storage processes in the mixtures than alone, and fish species is a factor to take into account in their stability. These findings highlight the need to assess the influence of food storage processes on the presence of cyanotoxins in fish species for a more realistic human health risk assessment.
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Affiliation(s)
- Leticia Diez-Quijada
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González Nº2, Spain
| | - Ana I Prieto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González Nº2, Spain.
| | - Remedios Guzmán-Guillén
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González Nº2, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González Nº2, Spain
| | - Ángeles Jos
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González Nº2, Spain
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Cascajosa-Lira A, Puerto M, Prieto AI, Pichardo S, Díez-Quijada Jiménez L, Baños A, Guillamón E, Moyano R, Molina-Hernández V, Jos Á, Cameán AM. Genotoxicity Evaluation of Propyl-Propane-Thiosulfinate (PTS) from Allium genus Essential Oils by a Combination of Micronucleus and Comet Assays in Rats. Foods 2021; 10:foods10050989. [PMID: 34062736 PMCID: PMC8147216 DOI: 10.3390/foods10050989] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 01/20/2023] Open
Abstract
Propyl-propanethiosulfinate (PTS) is a component of Allium essential oils. This organosulfur molecule can be used as a feed additive to decrease the appearance of bacterial resistances caused by the residues of antibiotics. In previous in vitro genotoxicity studies, contradictory results were reported for PTS. In this work, the in vivo genotoxicity of PTS in male and female rats was assessed for the first time, following OECD (Organisation for Economic Co-operation and Development) guidelines. After oral administration (doses: 5.5, 17.4, and 55.0 mg/kg PTS body weight), a combination of the micronucleus (MN) assay (OECD 474) in bone marrow and the standard and enzyme-modified comet assay (OECD 489) was performed. After necropsy, histopathological studies were also carried out. The results did not show the in vivo genotoxicity of PTS at any doses assayed, revealed by the absence of increased MN, and DNA strand breaks or oxidative DNA damage in the standard and enzyme-modified comet assays. The histopathological study revealed that only the highest dose tested (55.0 mg/kg) in the liver and all dose groups in the stomach presented minimal pathological lesions in the organs studied. Consequently, the present work confirms that PTS is not genotoxic at the doses assayed, and it is a promising natural alternative to synthetic preservatives and antibiotics in animal feed.
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Affiliation(s)
- Antonio Cascajosa-Lira
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012 Seville, Spain; (A.C.-L.); (M.P.); (A.I.P.); (S.P.); (L.D.-Q.J.); (Á.J.)
| | - María Puerto
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012 Seville, Spain; (A.C.-L.); (M.P.); (A.I.P.); (S.P.); (L.D.-Q.J.); (Á.J.)
| | - Ana I. Prieto
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012 Seville, Spain; (A.C.-L.); (M.P.); (A.I.P.); (S.P.); (L.D.-Q.J.); (Á.J.)
| | - Silvia Pichardo
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012 Seville, Spain; (A.C.-L.); (M.P.); (A.I.P.); (S.P.); (L.D.-Q.J.); (Á.J.)
| | - Leticia Díez-Quijada Jiménez
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012 Seville, Spain; (A.C.-L.); (M.P.); (A.I.P.); (S.P.); (L.D.-Q.J.); (Á.J.)
| | - Alberto Baños
- DMC Research Center, Camino de Jayena, 82, 18620 Alhendín, Spain; (A.B.); (E.G.)
| | - Enrique Guillamón
- DMC Research Center, Camino de Jayena, 82, 18620 Alhendín, Spain; (A.B.); (E.G.)
| | - Rosario Moyano
- Department of Anatomy and Comparative Pathology and Toxicology, Faculty of Veterinary Medicine, University of Cordoba, Campus de Rabanales, 14014 Cordoba, Spain; (R.M.); (V.M.-H.)
| | - Verónica Molina-Hernández
- Department of Anatomy and Comparative Pathology and Toxicology, Faculty of Veterinary Medicine, University of Cordoba, Campus de Rabanales, 14014 Cordoba, Spain; (R.M.); (V.M.-H.)
| | - Ángeles Jos
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012 Seville, Spain; (A.C.-L.); (M.P.); (A.I.P.); (S.P.); (L.D.-Q.J.); (Á.J.)
| | - Ana M. Cameán
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, Profesor García González n 2, 41012 Seville, Spain; (A.C.-L.); (M.P.); (A.I.P.); (S.P.); (L.D.-Q.J.); (Á.J.)
- Correspondence: ; Tel.: +34-954-556-762
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Cascajosa-Lira A, Ai P, M P, A B, E V, A J, Cameán AM. Mutagenicity and genotoxicity assessment of a new biopreservative product rich in Enterocin AS-48. Food Chem Toxicol 2020; 146:111846. [PMID: 33166674 DOI: 10.1016/j.fct.2020.111846] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 10/02/2020] [Revised: 10/22/2020] [Accepted: 10/31/2020] [Indexed: 11/17/2022]
Abstract
A biopreservative derived from the fermentation of a dairy byproduct by Enterococcus faecalis UGRA10 strains being developed. This product possesses a strong and wide antibacterial spectrum mainly due to the presence of Enterocin AS-48 in its composition. To assess its potential as food additive, the mutagenicicity and genotoxicity has been assayed by means of the bacterial reverse-mutation assay in Salmonella typhimurium TA97A, TA98, TA100, TA102, TA1535 strains (Ames test, OECD 471, 2020) and the micronucleus test (MN) (OECD 487, 2016) in L5178Y/Tk ± cells. The results in the Ames test after exposure to the byproduct (6.75-100 μg/plate) with absence and presence of the metabolic activation system from rat liver (S9 fraction), revealed not mutagenicity at the conditions tested. For the MN test, the exposition to five enterocin AS-48 concentrations (0.2-1 μg/μl) was tested in the absence and presence of S9 fraction, with no evidence of genotoxicity. Negative results in the mutagenicity and genotoxicity assays point out the good safety profile of the byproduct and support its use as additive. Further toxicological studies are required before its approval and commercial application.
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Affiliation(s)
- A Cascajosa-Lira
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Professor García González N°2, 41012, Sevilla, Spain
| | - Prieto Ai
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Professor García González N°2, 41012, Sevilla, Spain.
| | - Puerto M
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Professor García González N°2, 41012, Sevilla, Spain
| | - Baños A
- Department of Microbiology, University of Granada, Fuente Nueva S/n, 19071, Granada, Spain
| | - Valdivia E
- Department of Microbiology, University of Granada, Fuente Nueva S/n, 19071, Granada, Spain
| | - Jos A
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Professor García González N°2, 41012, Sevilla, Spain
| | - A M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Professor García González N°2, 41012, Sevilla, Spain
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Lira AC, Prieto AI, Baños A, Guillamón E, Moyano R, Jos A, Cameán AM. Safety assessment of propyl-propane-thiosulfonate (PTSO): 90-days oral subchronic toxicity study in rats. Food Chem Toxicol 2020; 144:111612. [PMID: 32738370 DOI: 10.1016/j.fct.2020.111612] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/09/2020] [Accepted: 07/11/2020] [Indexed: 12/28/2022]
Abstract
Propyl-propane-thiosulfonate (PTSO) is one of the main organosulfur compounds present in Allium essentials oil. Different applications in the food sector have been proposed for PTSO, such as food and feed additive and as active packaging. However, the authorization of its use depends on its toxicity profile. Thus, as a part of its safety assessment, in this work a repeated dose 90-day oral toxicity study has been conducted for the first time in rats following the OECD guideline 408. PTSO was administered to groups of 10 male and 10 female rats at dose levels of 0, 14, 28, and 55 mg/kg/day. No clinical signs or mortality and no changes in body weight, food consumption and feed conversion efficiency were detected through the study. Moreover, no treatment-related changes in hematological and biochemical parameters were observed, for either sex or dose groups. The histopathology study performed revealed no differences in organ weights, and no morphological and histopathological changes were observed. Based on these results, the no-observed-adverse-effect level (NOAEL) of PTSO was judged to be ≥ 55 mg/kg/day for both sexes.
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Affiliation(s)
| | - Ana Isabel Prieto
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
| | - Alberto Baños
- DMC Research Center SLU, Camino de Jayena s/n, Alhedin, 18620, Granada, Spain
| | - Enrique Guillamón
- DMC Research Center SLU, Camino de Jayena s/n, Alhedin, 18620, Granada, Spain
| | - Rosario Moyano
- Department of Pharmacology, Toxicology and Legal and Forensic Medicine, University of Cordoba, Campus de Rabanales Carretera Madrid-Cadiz s/n, Spain
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain.
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
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Díez-Quijada Jiménez L, Guzmán-Guillén R, Cătunescu GM, Campos A, Vasconcelos V, Jos Á, Cameán AM. A new method for the simultaneous determination of cyanotoxins (Microcystins and Cylindrospermopsin) in mussels using SPE-UPLC-MS/MS. Environ Res 2020; 185:109284. [PMID: 32244106 DOI: 10.1016/j.envres.2020.109284] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 11/27/2019] [Revised: 02/18/2020] [Accepted: 02/20/2020] [Indexed: 06/11/2023]
Abstract
The aim of this study was to optimize the extraction conditions of Microcystin-LR (MC-LR), Microcystin-RR (MC-RR), Microcystin-YR (MC-YR) and Cylindrospermopsin (CYN) simultaneously from mussels by using response surface methodology (RSM) and to validate the method by a dual solid phase extraction (SPE) system combined with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The optimal parameters were: 90% MeOH (% v/v) for the extraction, a solvent/sample ratio of 75 and 15% MeOH in the extract before loading onto SPE. Mussels were spiked at 10; 37.5 and 75 ng g-1 fresh weight (f.w) of the 4 toxins, showing linear ranges of 0.5-75 ng g-1 f.w; low values for the limits of detection (0.01-0.39 ng g-1 f.w.) and quantification (0.23-0.40 ng g-1 f.w.); acceptable recoveries (70.37-114.03%) and relative standard deviation (%RSDIP) values (2.61-13.73%). The method was successfully applied to edible mussels exposed to cyanobacterial extracts under laboratory conditions, and it could allow the monitoring of these cyanotoxins in environmental mussel samples.
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Affiliation(s)
| | | | - Giorgiana M Cătunescu
- University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3-5, 400372, Cluj-Napoca, Romania.
| | - Alexandre Campos
- Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Matosinhos, Portugal.
| | - Vitor Vasconcelos
- Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Matosinhos, Portugal; Department of Biology, Faculty of Science, University of Porto, Portugal.
| | - Ángeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain.
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain.
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Díez-Quijada L, Medrano-Padial C, Llana-Ruiz-Cabello M, Cătunescu GM, Moyano R, Risalde MA, Cameán AM, Jos Á. Cylindrospermopsin-Microcystin-LR Combinations May Induce Genotoxic and Histopathological Damage in Rats. Toxins (Basel) 2020; 12:E348. [PMID: 32466519 PMCID: PMC7354441 DOI: 10.3390/toxins12060348] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 04/08/2020] [Revised: 05/21/2020] [Accepted: 05/23/2020] [Indexed: 12/28/2022] Open
Abstract
Cylindrospermopsin (CYN) and microcystins (MC) are cyanotoxins that can occur simultaneously in contaminated water and food. CYN/MC-LR mixtures previously investigated in vitro showed an induction of micronucleus (MN) formation only in the presence of the metabolic fraction S9. When this is the case, the European Food Safety Authority recommends a follow up to in vivo testing. Thus, rats were orally exposed to 7.5 + 75, 23.7 + 237, and 75 + 750 μg CYN/MC-LR/kg body weight (b.w.). The MN test in bone marrow was performed, and the standard and modified comet assays were carried out to measure DNA strand breaks or oxidative DNA damage in stomach, liver, and blood cells. The results revealed an increase in MN formation in bone marrow, at all the assayed doses. However, no DNA strand breaks nor oxidative DNA damage were induced, as shown in the comet assays. The histopathological study indicated alterations only in the highest dose group. Liver was the target organ showing fatty degeneration and necrotic hepatocytes in centrilobular areas, as well as a light mononuclear inflammatory periportal infiltrate. Additionally, the stomach had flaking epithelium and mild necrosis of epithelial cells. Therefore, the combined exposure to cyanotoxins may induce genotoxic and histopathological damage in vivo.
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Affiliation(s)
- Leticia Díez-Quijada
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Profesor García González n2, 41012 Sevilla, Spain; (L.D.-Q.); (C.M.-P.); (M.L.-R.-C.); (Á.J.)
| | - Concepción Medrano-Padial
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Profesor García González n2, 41012 Sevilla, Spain; (L.D.-Q.); (C.M.-P.); (M.L.-R.-C.); (Á.J.)
| | - María Llana-Ruiz-Cabello
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Profesor García González n2, 41012 Sevilla, Spain; (L.D.-Q.); (C.M.-P.); (M.L.-R.-C.); (Á.J.)
| | - Giorgiana M. Cătunescu
- University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3-5, 400372 Cluj-Napoca, Romania;
| | - Rosario Moyano
- Department of Pharmacology, Toxicology and Legal and Forensic Medicine, Faculty of Veterinary Medicine, University of Córdoba, Campus de Rabanales, 14014 Córdoba, Spain;
| | - Maria A. Risalde
- Animal Pathology Department. Faculty of Veterinary Medicine, University of Córdoba, Campus Universitario de Rabanales s/n, 14014 Cordoba, Spain;
- Instituto Maimonides de Investigación Biomédica de Córdoba (IMIBIC)-Hospital Universitario Reina Sofía de Córdoba-Universidad de Córdoba, Avenida Menendez Pidal s/n, 14006 Cordoba, Spain
| | - Ana M. Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Profesor García González n2, 41012 Sevilla, Spain; (L.D.-Q.); (C.M.-P.); (M.L.-R.-C.); (Á.J.)
| | - Ángeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Profesor García González n2, 41012 Sevilla, Spain; (L.D.-Q.); (C.M.-P.); (M.L.-R.-C.); (Á.J.)
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20
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Díez-Quijada Jiménez L, Guzmán-Guillén R, Cascajosa Lira A, Jos Á, Cameán AM. In vitro assessment of cyanotoxins bioaccessibility in raw and cooked mussels. Food Chem Toxicol 2020; 140:111391. [PMID: 32353443 DOI: 10.1016/j.fct.2020.111391] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 02/06/2023]
Abstract
The oral route by ingestion of water and food contaminated with cyanotoxins is the main route of exposure to these toxins. This study addresses for the first time the bioaccessibility of some of the most common Microcystins (MC-LR, MC-RR and MC-YR) and Cylindrospermopsin (CYN) simultaneously in raw and steamed mussels spiked at 250 ng/g fresh weight of each cyanotoxin, after an in vitro digestion, including the salivary (incubation with artificial saliva, 30s), gastric (with pepsin, 2h, pH 2), duodenal (with pancreatin and bile salts, 2h, pH 6.5) and colonic phases (with lactic-acid bacteria, 48h, pH 7.2). The results obtained suggest that the potential absorption of these cyanotoxins by consumption of contaminated mussels is lower than expected. After the total effect of cooking and digestion, the mean bioaccessibility levels recorded were 24.65% (CYN), 31.51% (MC-RR), 17.51% (MC-YR) and 13.20% (MC-LR). Moreover, toxins were transferred to the steaming waters at 3.77 ± 0.24 μg L-1 CYN, 2.29 ± 0.13 μg L-1 MC-LR, 6.60 ± 0.25 μg L-1 MC-RR and 3.83 ± 0.22 μg L-1 MC-YR. These bioaccessibility results should be considered for a more accurate risk assessment related to these cyanotoxins in mussels, including the fact that the steaming waters could also represent a risk after human consumption.
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Affiliation(s)
| | | | | | - Ángeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
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Prieto AI, Guzmán-Guillén R, Jos Á, Cameán AM, de la Rosa JM, González-Pérez JA. Detection of cylindrospermopsin and its decomposition products in raw and cooked fish (Oreochromis niloticus) by analytical pyrolysis (Py-GC/MS). Chemosphere 2020; 244:125469. [PMID: 31790987 DOI: 10.1016/j.chemosphere.2019.125469] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 11/07/2019] [Accepted: 11/24/2019] [Indexed: 06/10/2023]
Abstract
The presence of the toxin cylindrospermopsin is increasingly frequent in samples from different ecosystems and it is a serious problem both at environmental level and for animal and human health. To be able to prevent CYN exposure risk, it is important to have suitable analytical methods, but also quick and economical ones. Analytical pyrolysis coupled to GC/MS (Py-GC/MS) represents an important alternative for the rapid detection, characterization or "fingerprinting" of different materials. However, it has been less studied with cyanotoxins up to date. The present work aims to investigate: 1) the suitability of Py-GC/MS for detection of CYN and its decomposition products in raw and cooked fish samples before consumption and 2) the influence of the different cooking methods on the presence of different CYN degradation products detected by Py-GC/MS. For first time, these results present that Py-GC/MS could be a rapid and economical alternative for the detection and monitoring of CYN and its degradation products (DP. m/z 290.1, 169.1 and 336.2) in raw or cooked fish. Moreover, the changes induced in CYN and DP by cooking could be amenable and detected by Py-GC/MS.
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Affiliation(s)
- Ana I Prieto
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González, 2, 41012, Sevilla, Spain
| | - Remedios Guzmán-Guillén
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González, 2, 41012, Sevilla, Spain
| | - Ángeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González, 2, 41012, Sevilla, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González, 2, 41012, Sevilla, Spain
| | - José Ma de la Rosa
- MOSS Group, Instituto de Recursos Naturales y Agrobiología de Sevilla, Consejo Superior de Investigaciones Científicas (IRNAS-CSIC), Av. Reina Mercedes, 10, 4012, Sevilla, Spain
| | - José A González-Pérez
- MOSS Group, Instituto de Recursos Naturales y Agrobiología de Sevilla, Consejo Superior de Investigaciones Científicas (IRNAS-CSIC), Av. Reina Mercedes, 10, 4012, Sevilla, Spain.
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22
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Hinojosa MG, Prieto AI, Gutiérrez-Praena D, Moreno FJ, Cameán AM, Jos A. In vitro assessment of the combination of cylindrospermopsin and the organophosphate chlorpyrifos on the human neuroblastoma SH-SY5Y cell line. Ecotoxicol Environ Saf 2020; 191:110222. [PMID: 31982683 DOI: 10.1016/j.ecoenv.2020.110222] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 11/05/2019] [Revised: 01/14/2020] [Accepted: 01/15/2020] [Indexed: 06/10/2023]
Abstract
Cylindrospermopsin (CYN) is a cyanotoxicant which occurrence is increasing due to climate change. Cylindrospermopsin is able to exert damage in the organism at several levels, among them, in the nervous system. Moreover, it is important to take into account that it is not usually present isolated in nature, but in combination with some other pollutants, being the case of the pesticide chlorpyrifos (CPF). Thus, the aim of the present work was to assess the effects of the interaction of CYN in combination with CPF in the human neuroblastoma cell line SH-SY5Y by evaluating cytotoxicity and mechanistic endpoints. The mixtures 0.25 + 21, 0.5 + 42, 1 + 84 μg/mL of CYN + CPF based on cytotoxicity results, were evaluated, and the isobologram method detected an antagonistic effect after 24 and 48 h of exposure. Moreover, although no alterations of reactive oxygen species were detected, a significant decrease of glutathione levels was observed after exposure to both, CPF alone and the combination, at all the concentrations and times of exposure assayed. In addition, CYN + CPF caused a marked decrease in the acetylcholinesterase activity, providing similar values to CPF alone. However, these effects were less severe than expected. All these findings, together with the morphological study results, point out that it is important to take into account the interaction of CYN with other pollutants. Further research is required to contribute to the risk assessment of CYN and other contaminants considering more realistic exposure scenarios.
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Affiliation(s)
- M G Hinojosa
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012, Sevilla, Spain
| | - A I Prieto
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012, Sevilla, Spain
| | - D Gutiérrez-Praena
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012, Sevilla, Spain.
| | - F J Moreno
- Área de Biología Celular, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012, Sevilla, Spain
| | - A M Cameán
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012, Sevilla, Spain
| | - A Jos
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012, Sevilla, Spain
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23
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Mantecón L, Moyano R, Cameán AM, Jos A. Safety assessment of a lyophilized biomass of Tetraselmis chuii (TetraSOD®) in a 90 day feeding study. Food Chem Toxicol 2019; 133:110810. [PMID: 31505236 DOI: 10.1016/j.fct.2019.110810] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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: 07/30/2019] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 12/15/2022]
Abstract
TetraSOD® is a powder of the lyophilized biomass of Tetraselmis chuii strain CCFM03, a marine microalga with a history of use as feed in the aquaculture industry. Recently, algae including T. chuii have been investigated for their potential use in human food. However, published toxicology studies addressing the safety of T. chuii as a food ingredient are not available. To address this issue, the toxicity of TetraSOD® was evaluated using a 90-day oral toxicology study in rats following the Organisation for Economic Co-operation and Development (OECD) test guideline 408. No treatment-related mortality or clinical signs were noted with TetraSOD® at doses of 625, 1667, or 2500 mg/kg/day. Additionally, no adverse effects on haematology, blood biochemistry, organ weights, gross or histopathology were observed. The Non Observed Adverse Effect Level (NOAEL) for TetraSOD® is greater than the highest tested dose of 2500 mg/kg/day.
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Affiliation(s)
- L Mantecón
- Fitoplancton Marino S.L. Dársena Comercial S/N (Muelle Pesquero), 11500 El Puerto de Santa María, Cádiz, Spain.
| | - R Moyano
- Department of Pharmacology, Toxicology and Legal and Forensic Medicine, University of Córdoba, Campus de Rabanales, Carretera Madrid-Cádiz s/n, Córdoba, 14071, Spain
| | - A M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González nº2, 41012, Seville, Spain
| | - A Jos
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González nº2, 41012, Seville, Spain
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24
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Díez-Quijada L, Llana-Ruiz-Cabello M, Cătunescu GM, Puerto M, Moyano R, Jos A, Cameán AM. In vivo genotoxicity evaluation of cylindrospermopsin in rats using a combined micronucleus and comet assay. Food Chem Toxicol 2019; 132:110664. [PMID: 31279043 DOI: 10.1016/j.fct.2019.110664] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 07/01/2019] [Accepted: 07/02/2019] [Indexed: 01/31/2023]
Abstract
Cylindrospermopsin (CYN) is a potent cyanotoxin recognized as an emerging human threat due to its cytotoxicity and potential carcinogenicity. Although the genotoxicity of CYN has been extensively studied in vitro, limited data are available on its in vivo genotoxicity. The aim of this study was to evaluate the in vivo genotoxicity of pure CYN (7.5-75 μg/kg body weight) after oral exposure of rats through a combined assay of the micronucleus test (MN) in bone marrow, and the standard and modified comet assay in stomach, liver and blood. Also, histopathological changes in stomach and liver were evaluated. Positive results in the MN test were observed in bone marrow in the exposed rats at all the tested concentrations. However, the comet assay revealed that CYN did not induce DNA strand breaks nor oxidative DNA damage in any of the tissues investigated. Finally, histopathological changes were observed in stomach and liver (7.5-75 μg/kg) in intoxicated rats. These results could indicate that CYN is able to induce irritation in stomach before its biotransformation in rats orally exposed, and genotoxicity in bone marrow.
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Affiliation(s)
- Leticia Díez-Quijada
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012, Seville. Spain
| | - Maria Llana-Ruiz-Cabello
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012, Seville. Spain.
| | - Giorgiana M Cătunescu
- University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3-5, 400372, Cluj-Napoca, Romania
| | - María Puerto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012, Seville. Spain
| | - Rosario Moyano
- Department of Pharmacology, Toxicology and Legal and Forensic Medicine, Faculty of Veterinary Medicine, University of Córdoba, Campus de Rabanales, Córdoba, Spain
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012, Seville. Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012, Seville. Spain
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25
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Hinojosa MG, Gutiérrez-Praena D, Prieto AI, Guzmán-Guillén R, Jos A, Cameán AM. Neurotoxicity induced by microcystins and cylindrospermopsin: A review. Sci Total Environ 2019; 668:547-565. [PMID: 30856566 DOI: 10.1016/j.scitotenv.2019.02.426] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [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: 12/14/2018] [Revised: 02/25/2019] [Accepted: 02/27/2019] [Indexed: 05/26/2023]
Abstract
Microcystins (MCs) and cylindrospermopsin (CYN) are among the most frequent toxins produced by cyanobacteria. These toxic secondary metabolites are classified as hepatotoxins and cytotoxin, respectively. Furthermore, both may present the ability to induce damage to the nervous system. In this sense, there are many studies manifesting the potential of MCs to cause neurotoxicity both in vitro and in vivo, due to their probable capacity to cross the blood-brain-barrier through organic anion transporting polypeptides. Moreover, the presence of MCs has been detected in brain of several experimental models. Among the neurological effects, histopathological brain changes, deregulation of biochemical parameters in brain (production of oxidative stress and inhibition of protein phosphatases) and behavioral alterations have been described. It is noteworthy that minority variants such as MC-LF and -LW have demonstrated to exert higher neurotoxic effects compared to the most studied congener, MC-LR. By contrast, the available studies concerning CYN-neurotoxic effects are very scarce, mostly showing inflammation and apoptosis in neural murine cell lines, oxidative stress, and alteration of the acetylcholinesterase activity in vivo. However, more studies are required in order to clarify the neurotoxic potential of both toxins, as well as their possible contribution to neurodegenerative diseases.
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Affiliation(s)
- M G Hinojosa
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - D Gutiérrez-Praena
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - A I Prieto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain.
| | - R Guzmán-Guillén
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - A Jos
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - A M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
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26
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Díez-Quijada L, Prieto AI, Puerto M, Jos Á, Cameán AM. In Vitro Mutagenic and Genotoxic Assessment of a Mixture of the Cyanotoxins Microcystin-LR and Cylindrospermopsin. Toxins (Basel) 2019; 11:E318. [PMID: 31167415 PMCID: PMC6628426 DOI: 10.3390/toxins11060318] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 04/10/2019] [Revised: 05/29/2019] [Accepted: 05/31/2019] [Indexed: 12/18/2022] Open
Abstract
The co-occurrence of various cyanobacterial toxins can potentially induce toxic effects different than those observed for single cyanotoxins, as interaction phenomena cannot be discarded. Moreover, mixtures are a more probable exposure scenario. However, toxicological information on the topic is still scarce. Taking into account the important role of mutagenicity and genotoxicity in the risk evaluation framework, the objective of this study was to assess the mutagenic and genotoxic potential of mixtures of two of the most relevant cyanotoxins, Microcystin-LR (MC-LR) and Cylindrospermopsin (CYN), using the battery of in vitro tests recommended by the European Food Safety Authority (EFSA) for food contaminants. Mixtures of 1:10 CYN/MC-LR (CYN concentration in the range 0.04-2.5 µg/mL) were used to perform the bacterial reverse-mutation assay (Ames test) in Salmonella typhimurium, the mammalian cell micronucleus (MN) test and the mouse lymphoma thymidine-kinase assay (MLA) on L5178YTk± cells, while Caco-2 cells were used for the standard and enzyme-modified comet assays. The exposure periods ranged between 4 and 72 h depending on the assay. The genotoxicity of the mixture was observed only in the MN test with S9 metabolic fraction, similar to the results previously reported for CYN individually. These results indicate that cyanobacterial mixtures require a specific (geno)toxicity evaluation as their effects cannot be extrapolated from those of the individual cyanotoxins.
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Affiliation(s)
- Leticia Díez-Quijada
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Ana I Prieto
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - María Puerto
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Ángeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
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27
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Hinojosa MG, Prieto AI, Gutiérrez-Praena D, Moreno FJ, Cameán AM, Jos A. Neurotoxic assessment of Microcystin-LR, cylindrospermopsin and their combination on the human neuroblastoma SH-SY5Y cell line. Chemosphere 2019; 224:751-764. [PMID: 30851527 DOI: 10.1016/j.chemosphere.2019.02.173] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 02/12/2019] [Accepted: 02/24/2019] [Indexed: 06/09/2023]
Abstract
Microcystin-LR (MC-LR) and Cylindrospermopsin (CYN) are produced by cyanobacteria. Although being considered as a hepatotoxin and a cytotoxin, respectively, different studies have revealed neurotoxic properties for both of them. The aim of the present work was to study their cytotoxic effects, alone and in combination, in the SH-SY5Y cell line. In addition, toxicity mechanisms such as oxidative stress and acetylcholinesterase (AChE) activity, and morphological studies were carried out. Results showed a cytotoxic response of the cells after their exposure to 0-100 μg/mL of MC-LR or 0-10 μg/mL CYN in both differentiated and undifferentiated cells. Thus, CYN resulted to be more toxic than MC-LR. Respect to their combination, a higher cytotoxic effect than the toxins alone in the case of undifferentiated cells, and almost a similar response to the presented by MC-LR in differentiated cells were observed. However, after analyzing this data with the isobolograms method, an antagonistic effect was mainly obtained. The oxidative stress study only showed an affectation of glutathione levels at the highest concentrations assayed of MC-LR and the combination in the undifferentiated cells. A significant increase in the AChE activity was observed after exposure to MC-LR in undifferentiated cells, and after exposure to the combination of both cyanotoxins on differentiated cells. However, CYN decreased the AChE activity only on differentiated cultures. Finally, the morphological study revealed different signs of cellular affectation, with apoptotic processes at all the concentrations assayed. Therefore, both cyanotoxins isolated and in combination, have demonstrated to cause neurotoxic effects in the SH-SY5Y cell line.
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Affiliation(s)
- M G Hinojosa
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012, Sevilla, Spain
| | - A I Prieto
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012, Sevilla, Spain
| | - D Gutiérrez-Praena
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012, Sevilla, Spain.
| | - F J Moreno
- Área de Biología Celular, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012, Sevilla, Spain
| | - A M Cameán
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012, Sevilla, Spain
| | - A Jos
- Área de Toxicología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012, Sevilla, Spain
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Díez-Quijada L, Puerto M, Gutiérrez-Praena D, Llana-Ruiz-Cabello M, Jos A, Cameán AM. Microcystin-RR: Occurrence, content in water and food and toxicological studies. A review. Environ Res 2019; 168:467-489. [PMID: 30399604 DOI: 10.1016/j.envres.2018.07.019] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [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: 04/24/2018] [Revised: 07/09/2018] [Accepted: 07/09/2018] [Indexed: 06/08/2023]
Abstract
Microcystins (MCs) are hepatotoxins, produced by various species of cyanobacteria, whose occurrence is increasing worldwide owing to climate change and anthropogenic activities. More than 100 variants have been reported, and among them MC-LR is the most extensively studied, but there are other MC congeners that deserve to be investigated. The need for data to characterize the toxicological profile of MC variants other than MC-LR has been identified in order to improve risk assessment in humans and wildlife. Accordingly, the aim of this study was to evaluate the information available in the scientific literature dealing with MC-RR, as this congener is the second most common cyanotoxin in the environment. The review focuses on aspects such as occurrence in water and food, and toxicity studies both in vitro and in vivo. It reveals that, although MC-RR is a real hazard with a high exposure potential in some countries, little is known yet about its specific toxicological properties that differ from those of MC-LR, and important aspects such as genotoxicity and chronic effects have not yet been sufficiently addressed.
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Affiliation(s)
- Leticia Díez-Quijada
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain
| | - María Puerto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Daniel Gutiérrez-Praena
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain
| | - María Llana-Ruiz-Cabello
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain
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29
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Díez-Quijada L, Prieto AI, Guzmán-Guillén R, Jos A, Cameán AM. Occurrence and toxicity of microcystin congeners other than MC-LR and MC-RR: A review. Food Chem Toxicol 2018; 125:106-132. [PMID: 30597222 DOI: 10.1016/j.fct.2018.12.042] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 11/29/2018] [Accepted: 12/25/2018] [Indexed: 12/11/2022]
Abstract
The occurrence of cyanobacterial toxins is being increasingly reported. This is a reason for concern as they can induce toxic effects both in humans and in the environment. Among them, microcystins (MCs) are the best described and most diverse group of cyanobacterial toxins, and MC-LR and MC-RR are the congeners most widely investigated. However, the number of MC variants has also increased in recent years. Some of these minority variants have been shown to have a different toxicokinetic and toxicodynamic profile, but research focused on them is still limited. Moreover, in some water bodies these minority variants can be the predominant toxins. Nonetheless, MC-LR is the only one used for risk evaluation purposes at present. In order to contribute to more realistic risk assessments in the future, the aim of this review was to compile the available information in the scientific literature regarding the occurrence and concentration of minority MCs in water and food samples, and their toxic effects. The data retrieved demonstrate the congener-specific toxicity of MCs, as well as many data gaps in relation to analytical or mechanistic aspects, among others. Therefore, further research is needed to improve the toxicological characterization of these toxins and the exposure scenarios.
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Affiliation(s)
- Leticia Díez-Quijada
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012, Seville, Spain
| | - Ana I Prieto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012, Seville, Spain
| | - Remedios Guzmán-Guillén
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012, Seville, Spain
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012, Seville, Spain.
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012, Seville, Spain
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30
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Díez-Quijada L, Guzmán-Guillén R, Prieto Ortega AI, Llana-Ruíz-Cabello M, Campos A, Vasconcelos V, Jos Á, Cameán AM. New Method for Simultaneous Determination of Microcystins and Cylindrospermopsin in Vegetable Matrices by SPE-UPLC-MS/MS. Toxins (Basel) 2018; 10:E406. [PMID: 30297653 PMCID: PMC6215191 DOI: 10.3390/toxins10100406] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [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: 09/07/2018] [Revised: 10/03/2018] [Accepted: 10/06/2018] [Indexed: 11/24/2022] Open
Abstract
Cyanotoxins are a large group of noxious metabolites with different chemical structure and mechanisms of action, with a worldwide distribution, producing effects in animals, humans, and crop plants. When cyanotoxin-contaminated waters are used for the irrigation of edible vegetables, humans can be in contact with these toxins through the food chain. In this work, a method for the simultaneous detection of Microcystin-LR (MC-LR), Microcystin-RR (MC-RR), Microcystin-YR (MC-YR), and Cylindrospermopsin (CYN) in lettuce has been optimized and validated, using a dual solid phase extraction (SPE) system for toxin extraction and ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) for analysis. Results showed linear ranges (5⁻50 ng g-1 f.w.), low values for limit of detection (LOD) (0.06⁻0.42 ng g-1 f.w.), and limit of quantification (LOQ) (0.16⁻0.91 ng g-1 f.w.), acceptable recoveries (41⁻93%), and %RSDIP values for the four toxins. The method proved to be robust for the three variables tested. Finally, it was successfully applied to detect these cyanotoxins in edible vegetables exposed to cyanobacterial extracts under laboratory conditions, and it could be useful for monitoring these toxins in edible vegetables for better exposure estimation in terms of risk assessment.
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Affiliation(s)
- Leticia Díez-Quijada
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Remedios Guzmán-Guillén
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Ana I Prieto Ortega
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - María Llana-Ruíz-Cabello
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Alexandre Campos
- CIIMAR/CIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de leixões, Av General Norton de Matos, 4450-208 Matosinhos, Portugal.
| | - Vítor Vasconcelos
- CIIMAR/CIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de leixões, Av General Norton de Matos, 4450-208 Matosinhos, Portugal.
- Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal.
| | - Ángeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
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Maisanaba S, Guzmán-Guillén R, Valderrama R, Meca G, Font G, Jos Á, Cameán AM. Bioaccessibility and decomposition of cylindrospermopsin in vegetables matrices after the application of an in vitro digestion model. Food Chem Toxicol 2018; 120:164-171. [PMID: 29981788 DOI: 10.1016/j.fct.2018.07.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 06/14/2018] [Accepted: 07/05/2018] [Indexed: 01/19/2023]
Abstract
Research on the human exposure to Cylindrospermopsin (CYN) via consumption of contaminated food is of great interest for risk assessment purposes. The aim of this work is to evaluate for the first time the CYN bioaccessibility in contaminated vegetables (uncooked lettuce and spinach, and boiled spinach) after an in vitro digestion model, including the salivar, gastric and duodenal phases and, colonic fermentation under lactic acid bacteria. The results obtained showed that the digestion processes are able to diminish CYN levels, mainly in the colonic phase, especially in combination with the boiling treatment, decreasing CYN levels in a significant way. Moreover, the potential decomposition products in a pure CYN solution and in CYN-contaminated vegetables were evaluated using UHPLC-MS/MS Orbitrap. Under the conditions assayed, only two diastereoisomers of the same fragment with m/z 292.09617 have been detected in all the analysed samples, with the exception of digested vegetables. Therefore, in terms of risk assessment, the digestion seems to play an important role in reducing the final bioaccesibility of CYN, and the consumption of cooked vegetables (spinach) would be safer in comparison to raw vegetables.
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Affiliation(s)
- Sara Maisanaba
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
| | | | - Rocío Valderrama
- Mass Spectrometry Facility, Centro de Investigacion Tecnologica e Investigacion (CITIUS), University of Sevilla, Spain
| | - Giuseppe Meca
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Burjassot, Spain
| | - Guillermina Font
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Burjassot, Spain
| | - Ángeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
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Prieto AI, Guzmán-Guillén R, Díez-Quijada L, Campos A, Vasconcelos V, Jos Á, Cameán AM. Validation of a Method for Cylindrospermopsin Determination in Vegetables: Application to Real Samples Such as Lettuce (Lactuca sativa L.). Toxins (Basel) 2018; 10:E63. [PMID: 29389882 PMCID: PMC5848164 DOI: 10.3390/toxins10020063] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 01/11/2018] [Revised: 01/19/2018] [Accepted: 02/01/2018] [Indexed: 01/08/2023] Open
Abstract
Reports on the occurrence of the cyanobacterial toxin cylindrospermopsin (CYN) have increased worldwide because of CYN toxic effects in humans and animals. If contaminated waters are used for plant irrigation, these could represent a possible CYN exposure route for humans. For the first time, a method employing solid phase extraction and quantification by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) of CYN was optimized in vegetables matrices such as lettuce (Lactuca sativa). The validated method showed a linear range, from 5 to 500 ng CYN g-1 of fresh weight (f.w.), and detection and quantitation limits (LOD and LOQ) of 0.22 and 0.42 ng CYN g-1 f.w., respectively. The mean recoveries ranged between 85 and 104%, and the intermediate precision from 12.7 to 14.7%. The method showed to be robust for the three different variables tested. Moreover, it was successfully applied to quantify CYN in edible lettuce leaves exposed to CYN-contaminated water (10 µg L-1), showing that the tolerable daily intake (TDI) in the case of CYN could be exceeded in elderly high consumers. The validated method showed good results in terms of sensitivity, precision, accuracy, and robustness for CYN determination in leaf vegetables such as lettuce. More studies are needed in order to prevent the risks associated with the consumption of CYN-contaminated vegetables.
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Affiliation(s)
- Ana I Prieto
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Remedios Guzmán-Guillén
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Leticia Díez-Quijada
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Alexandre Campos
- Interdisciplinary Centre of Marine and Environmental Research-CIIMAR/CIMAR, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
| | - Vitor Vasconcelos
- Interdisciplinary Centre of Marine and Environmental Research-CIIMAR/CIMAR, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4069-007 Porto, Portugal.
| | - Ángeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
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Llana-Ruiz-Cabello M, Pichardo S, Bermudez JM, Baños A, Ariza JJ, Guillamón E, Aucejo S, Cameán AM. Characterisation and antimicrobial activity of active polypropylene films containing oregano essential oil and Allium extract to be used in packaging for meat products. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2018; 35:782-791. [PMID: 29279039 DOI: 10.1080/19440049.2017.1422282] [Citation(s) in RCA: 18] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Cooked ham is more prone to spoilage than other meat products, making preservation a key step in its commercialisation. One of the most promising preservation strategies is the use of active packaging. Oregano essential oil (OEO) and Proallium® (an Allium extract) have previously been shown to be useful in polylactic acid (PLA)-active films for ready-to-eat salads. The present work aims to study the suitability of polypropylene (PP) films containing OEO and Proallium® in the preservation of cooked ham. Concerning the technological features of the studied material, no significant changes in the mechanical or optical properties of PP films containing the active substances were recorded in comparison to the PP film without extracts. However, films containing both active substances were more flexible than the control film and less strong, highlighting the plasticisation effect of the natural extracts. Moreover, physical properties changed when active substances were added to the film. Incorporation of 4% Proallium® affected the transparency of the film to a higher extent compared to 8% OEO, undergoing decreases in transparency of 40% and 45%, respectively. Moreover, only the film containing the highest amount of OEO (8%) significantly decreased the thickness. Both active substances showed antibacterial properties; however, Proallium®-active films seemed to be more effective against Brochothrix thermosphacta than PP films containing OEO, with all percentages of Proallium® killing the bacterial population present in the ham after 60 days. In addition, materials containing the lowest Proallium® content exhibited higher acceptability by consumers in the sensory analyses with 63-100% willing to purchase, better even than the control package (56-89%). In fact, 2% of Proallium® obtained the best results in the odour study performed by the panellists.
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Affiliation(s)
| | - Silvia Pichardo
- a Area of Toxicology, Faculty of Pharmacy , Universidad de Sevilla , Seville , Spain
| | | | | | | | | | - Susana Aucejo
- c Area of Packaging materials and Systems , ITENE , Paterna , Spain
| | - Ana M Cameán
- a Area of Toxicology, Faculty of Pharmacy , Universidad de Sevilla , Seville , Spain
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Pichardo S, Cameán AM, Jos A. In Vitro Toxicological Assessment of Cylindrospermopsin: A Review. Toxins (Basel) 2017; 9:toxins9120402. [PMID: 29258177 PMCID: PMC5744122 DOI: 10.3390/toxins9120402] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 12/12/2017] [Accepted: 12/13/2017] [Indexed: 12/29/2022] Open
Abstract
Cylindrospermopsin (CYN) is a cyanobacterial toxin that is gaining importance, owing to its increasing expansion worldwide and the increased frequency of its blooms. CYN mainly targets the liver, but also involves other organs. Various mechanisms have been associated with its toxicity, such as protein synthesis inhibition, oxidative stress, etc. However, its toxic effects are not yet fully elucidated and additional data for hazard characterization purposes are required. In this regard, in vitro methods can play an important role, owing to their advantages in comparison to in vivo trials. The aim of this work was to compile and evaluate the in vitro data dealing with CYN available in the scientific literature, focusing on its toxicokinetics and its main toxicity mechanisms. This analysis would be useful to identify research needs and data gaps in order to complete knowledge about the toxicity profile of CYN. For example, it has been shown that research on various aspects, such as new emerging toxicity effects, the toxicity of analogs, or the potential interaction of CYN with other cyanotoxins, among others, is still very scarce. New in vitro studies are therefore welcome.
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Affiliation(s)
- Silvia Pichardo
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
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Hercog K, Maisanaba S, Filipič M, Jos Á, Cameán AM, Žegura B. Genotoxic potential of the binary mixture of cyanotoxins microcystin-LR and cylindrospermopsin. Chemosphere 2017; 189:319-329. [PMID: 28942258 DOI: 10.1016/j.chemosphere.2017.09.075] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 07/12/2017] [Revised: 09/09/2017] [Accepted: 09/15/2017] [Indexed: 06/07/2023]
Abstract
Increased eutrophication of water bodies promotes cyanobacterial blooming that is hazardous due to the production of various bioactive compounds. Microcystin-LR (MCLR) is among the most widespread cyanotoxins classified as possible human carcinogen, while cylindrospermopsin (CYN) has only recently been recognized as health concern. Both cyanotoxins are genotoxic; however, the mechanisms of their action differ. They are ubiquitously present in water environment and are often detected together. Therefore, we studied genotoxic potential of the binary mixture of these cyanotoxins. Human hepatoma cells (HepG2) were exposed to a single dose of MCLR (1 μg/mL), graded doses of CYN (0.01-0.5 μg/mL), and their combinations. Comet and Cytokinesis block micronucleus assays were used to detect induction of DNA strand breaks (sb) and genomic instability, respectively, along with the transcriptional analyses of the expression of selected genes involved in xenobiotic metabolism, immediate/early cell response and DNA-damage response. MCLR induced DNA sb that were only transiently present after 4 h exposure, whereas CYN, after 24 h exposure, induced DNA sb and genomic instability. The MCLR/CYN mixture induced DNA sb after 24 h exposure, but to lesser extent as CYN alone. On the other hand, induction of genomic instability by the MCLR/CYN mixture was comparable to that induced by CYN alone. In addition, patterns of changes in the expression of selected genes induced by the MCLR/CYN mixture were not significantly different from those induced by CYN alone. Our results indicate that CYN exerts higher genotoxic potential than MCLR and that genotoxic potential of the MCLR/CYN mixture is comparable to that of CYN alone.
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Affiliation(s)
- Klara Hercog
- Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Slovenia; Jozef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Sara Maisanaba
- Area of Toxicology, Department of Nutrition and Bromatology, Toxicology and Legal Medicine, Faculty of Pharmacy, University of Sevilla, Spain
| | - Metka Filipič
- Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Slovenia
| | - Ángeles Jos
- Area of Toxicology, Department of Nutrition and Bromatology, Toxicology and Legal Medicine, Faculty of Pharmacy, University of Sevilla, Spain
| | - Ana M Cameán
- Area of Toxicology, Department of Nutrition and Bromatology, Toxicology and Legal Medicine, Faculty of Pharmacy, University of Sevilla, Spain
| | - Bojana Žegura
- Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Slovenia.
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Maisanaba S, Saladino F, Font G, Jos Á, Cameán AM, Meca G. Bioaccesibility of Cylindrospermopsin from cooked fish muscle after the application of an in vitro digestion model and its bioavailability. Food Chem Toxicol 2017; 110:360-370. [DOI: 10.1016/j.fct.2017.10.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 10/27/2017] [Accepted: 10/28/2017] [Indexed: 11/17/2022]
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Guzmán-Guillén R, Prieto Ortega AI, Moreno IM, Ríos V, Moyano R, Blanco A, Vasconcelos V, Cameán AM. Effects of depuration on histopathological changes in tilapia (Oreochromis niloticus) after exposure to cylindrospermopsin. Environ Toxicol 2017; 32:1318-1332. [PMID: 27463828 DOI: 10.1002/tox.22326] [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: 05/25/2016] [Revised: 07/07/2016] [Accepted: 07/07/2016] [Indexed: 06/06/2023]
Abstract
Cylindrospermopsin (CYN) is a highly water-soluble cytotoxin produced by several species of freshwater cyanobacteria and it is considered the second most studied cyanotoxin worldwide. CYN acts as a potent protein and glutathione synthesis inhibitor, as well as inducing genotoxicity, oxidative stress and histopathological alterations. Studies concerning the depuration of cyanobacterial toxins in aquatic organisms, especially in fish, are of great interest for fish economy and public health, but are scarce in the case of CYN. This is the first study reporting the ability of depuration (3 - 7 days) in reversing or ameliorating the histopathological lesions induced in liver, kidney, heart, intestines, and gills of tilapia (Oreochromis niloticus) due to exposure by immersion to repeated doses of a CYN-containing culture of A. ovalisporum for 14 days. The main histopathological changes induced by CYN were glucogenic degeneration and loss of the normal hepatic cord-structure (liver), hyperemia, dilated Bowman's capsule and cellular tumefaction (kidney), myofibrolysis, hemorrhages and edema (heart), necrosis and partial loss of microvilli (gastrointestinal tract), and hyperemia and inflammatory cells infiltrates (gills). After 3 days of depuration, gills were totally recovered, while the liver, kidney, and gastrointestinal tract required 7 days, and longer depuration periods may be needed for a full recovery of the heart. In addition, the morphometric study indicated that depuration managed to reverse the affectation in the hepatocytes nuclear diameters and cross sections of the proximal and distal convoluted tubules induced in CYN-exposed fish. In general, these results validate depuration as an effective practice for detoxification of fish contaminated with CYN. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1318-1332, 2017.
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Affiliation(s)
- Remedios Guzmán-Guillén
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
| | - Ana I Prieto Ortega
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
| | - Isabel M Moreno
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
| | - Victoria Ríos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
| | - Rosario Moyano
- Department of Pharmacology, Toxicology and Legal and Forensic Medicine, University of Córdoba, Campus De Rabanales Carretera Madrid-Cádiz S/N, Córdoba, 14071, Spain
| | - Alfonso Blanco
- Department of Anatomy and Comparative Pathology and Anatomy, University of Córdoba, Campus De Rabanales Carretera Madrid- Cádiz S/N, Córdoba, 14071, Spain
| | - Vitor Vasconcelos
- Interdisciplinary Center of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Rua dos, Bragas, 289, 4050-123, Porto, Portugal
- Department of Biology, Faculty of Sciences of the University of Porto, Porto, 4169-007, Portugal
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
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Guzmán-Guillén R, Campos A, Machado J, Freitas M, Azevedo J, Pinto E, Almeida A, Cameán AM, Vasconcelos V. Effects of Chrysosporum (Aphanizomenon) ovalisporum extracts containing cylindrospermopsin on growth, photosynthetic capacity, and mineral content of carrots (Daucus carota). Ecotoxicology 2017; 26:22-31. [PMID: 27770233 DOI: 10.1007/s10646-016-1737-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/29/2016] [Indexed: 06/06/2023]
Abstract
Natural toxins produced by freshwater cyanobacteria, such as cylindrospermopsin, have been regarded as an emergent environmental threat. Despite the risks for food safety, the impact of these water contaminants in agriculture is not yet fully understood. Carrots (Daucus carota) are root vegetables, extensively consumed worldwide with great importance for human nourishment and economy. It is, therefore, important to evaluate the possible effects of using water contaminated with cyanotoxins on carrot cultivation. The aim of this work was to investigate cylindrospermopsin effects on D. carota grown in soil and irrigated for 30 days, with a Chrysosporum ovalisporum extract containing environmentally relevant concentrations of cylindrospermopsin (10 and 50 μg/L). The parameters evaluated were plant growth, photosynthetic capacity, and nutritional value (mineral content) in roots of carrots, as these are the edible parts of this plant crop. The results show that, exposure to cylindrospermopsin did not have a clear negative effect on growth or photosynthesis of D. carota, even leading to an increase of both parameters. However, alterations in mineral contents were detected after exposure to crude extracts of C. ovalisporum containing cylindrospermopsin. A general decline was observed for most minerals (Ca, Mg, Na, Fe, Mn, Zn, Mo, and P), although an increase was shown in the case of K and Cu, pointing to a possible interference of the cyanobacterial extract in mineral uptake. This study is the first to evaluate the effects of C. ovalisporum extracts on a root vegetable, however, more research is necessary to understand the effects of this toxin in environmentally relevant scenarios.
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Affiliation(s)
| | - Alexandre Campos
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Porto, 4050-123, Portugal.
| | - Joana Machado
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Porto, 4050-123, Portugal
| | - Marisa Freitas
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Porto, 4050-123, Portugal
- Department of Environmental Health, Escola Superior de Tecnologia da Saúde do Porto, Polytechnic Institute of Porto, CISA/Research Center in Environment and Health, Rua de Valente Perfeito, 322, Gaia, 4400-330, Portugal
| | - Joana Azevedo
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Porto, 4050-123, Portugal
| | - Edgar Pinto
- LAQV/REQUIMTE, Department of Chemical Sciences, Laboratory of Applied Chemistry, Department of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, Porto, 4050-313, Portugal
- Department of Environmental Health, Escola Superior de Tecnologia da Saúde do Porto, Polytechnic Institute of Porto, CISA/Research Center in Environment and Health, Rua de Valente Perfeito, 322, Gaia, 4400-330, Portugal
| | - Agostinho Almeida
- LAQV/REQUIMTE, Department of Chemical Sciences, Laboratory of Applied Chemistry, Department of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, Porto, 4050-313, Portugal
| | - Ana M Cameán
- Area of Toxicology, Department of Pharmacy, University of Sevilla, Sevilla, Spain
| | - Vitor Vasconcelos
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Porto, 4050-123, Portugal
- Department of Biology, Department of Sciences of the University of Porto, Porto, 4169-007, Portugal
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Guzmán-Guillén R, Prieto Ortega AI, Moyano R, Blanco A, Vasconcelos V, Cameán AM. Dietary l-carnitine prevents histopathological changes in tilapia (Oreochromis Niloticus) exposed to cylindrospermopsin. Environ Toxicol 2017; 32:241-254. [PMID: 26714798 DOI: 10.1002/tox.22229] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 10/27/2015] [Revised: 11/27/2015] [Accepted: 12/03/2015] [Indexed: 06/05/2023]
Abstract
Cylindrospermopsin (CYN) is a cytotoxin highly water-soluble, which is easily taken up by several aquatic organisms. CYN acts as a potent protein and glutathione synthesis inhibitor, as well as inducing genotoxicity, oxidative stress, and histopathological alterations. This is the first study reporting the protective effect of a l-carnitine (LC) pretreatment (400 or 880 mg LC/kg bw fish/day, for 21 days) on the histopathological alterations induced by pure CYN or Aphanizomenon ovalisporum lyophilized cells (400 µg CYN/kg bw fish) in liver, kidney, heart, intestines, and gills of tilapia (Oreochromis niloticus) acutely exposed to the toxin by oral route. The main histopathological changes induced by CYN were disorganized parenchyma with presence of glycogen and lipids in the cytoplasm (liver), glomerulonephritis, glomerular atrophy, and dilatation of Bowman's capsule (kidney), myofibrolysis, loss of myofibrils, with edema and hemorrhage (heart), intestinal villi with necrotic enterocytes and partial loss of microvilli (gastrointestinal tract), and hyperemia and hemorrhage (gills). LC pretreatment was able to totally prevent those CYN-induced alterations from 400 mg LC/kg bw fish/day in almost all organs, except in the heart, where 880 mg LC/kg bw fish/day were needed. In addition, the morphometric study indicated that LC managed to recover totally the affectation in the cross sections of the proximal and distal convoluted tubules in CYN-exposed fish. © 2015 Wiley Periodicals, Inc. Environ Toxicol 32: 241-254, 2017.
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Affiliation(s)
- Remedios Guzmán-Guillén
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
| | - Ana I Prieto Ortega
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
| | - Rosario Moyano
- Department of Pharmacology, Toxicology and Legal and Forensic Medicine, University of Córdoba. Campus De Rabanales Carretera Madrid-Cádiz S/N, Córdoba, 14071, Spain
| | - Alfonso Blanco
- Department of Anatomy and Comparative Pathology and Anatomy, University of Córdoba, Campus De Rabanales Carretera Madrid-Cádiz S/N, Córdoba, 14071, Spain
| | - Vitor Vasconcelos
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Porto, 4050-123, Portugal
- Department of Biology, Faculty of Sciences of the University of Porto, 4169-007, Portugal
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
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Llana-Ruiz-Cabello M, Maisanaba S, Puerto M, Prieto AI, Pichardo S, Moyano R, González-Pérez JA, Cameán AM. Genotoxicity evaluation of carvacrol in rats using a combined micronucleus and comet assay. Food Chem Toxicol 2016; 98:240-250. [PMID: 27829163 DOI: 10.1016/j.fct.2016.11.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 10/17/2016] [Accepted: 11/05/2016] [Indexed: 11/19/2022]
Abstract
Genotoxic data of substances which could be incorporated into food packaging are required by the European Food Safety Authority. Due to its antioxidant and antibacterial properties carvacrol is one of these compounds. This work aims to study for the first time the in vivo genotoxic effects produced in rats orally exposed to 81, 256 or 810 mg cavacrol/kg body weight (bw) at 0, 24 and 45 h. A combination of the micronucleus assay (OECD 474) in bone marrow and the standard (OECD 489) and enzyme-modified comet assay was used to determine the genotoxicity on cells isolated from stomach and liver of exposed animals. In addition, a histopathological study was performed on the assayed tissues, and also in the lungs due to the volatility of carvacrol. Direct analytical pyrolysis was used to search for carvacrol in viscera and to ensure that the compound reaches stomach and liver cells. Results from MN-comet assay revealed that carvacrol (81-810 mg/kg bw) did not induce in vivo genotoxicity or oxidative DNA damage in any of the tissues investigated. Moreover, no histopathological changes were observed. Altogether, these results suggest lack of genotoxicity of carvacrol and therefore its good profile for its potential application as food preservative.
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Affiliation(s)
- María Llana-Ruiz-Cabello
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Sevilla, Spain.
| | - Sara Maisanaba
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Sevilla, Spain
| | - María Puerto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Sevilla, Spain
| | - Ana I Prieto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Sevilla, Spain
| | - Silvia Pichardo
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Sevilla, Spain
| | - Rosario Moyano
- Department of Pharmacology, Toxicology and Legal and Forensic Medicine, Faculty of Veterinary Medicine, University of Córdoba, Campus de Rabanales, Córdoba, Spain
| | | | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Sevilla, Spain
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Guzmán-Guillén R, Prieto Ortega AI, Gutiérrez-Praena D, Moreno IM, Moyano R, Blanco A, Cameán AM. Vitamin E pretreatment prevents histopathological effects in tilapia (Oreochromis niloticus) acutely exposed to cylindrospermopsin. Environ Toxicol 2016; 31:1469-1485. [PMID: 26011011 DOI: 10.1002/tox.22152] [Citation(s) in RCA: 5] [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: 02/25/2015] [Revised: 04/27/2015] [Accepted: 05/11/2015] [Indexed: 06/04/2023]
Abstract
Cylindrospermopsin (CYN) is a cyanotoxin frequently involved in blooms with a predominantly extracellular availability, which makes it easily taken up by a variety of aquatic organisms. CYN is a potent protein and glutathione synthesis inhibitor, and also induces genotoxicity, oxidative stress and several histopathological lesions. The present study investigates the protective role of a vitamin E pretreatment (700 mg vit E/kg fish bw/day, for 7 days) on the histopathological alterations induced in different organs of tilapia (Oreochromis niloticus) acutely exposed to a single oral dose of 400 µg pure CYN/kg bw fish. The major histological changes observed were degenerative glucogenic process and loss of the hepatic structure in the liver, glomerulopathy and tubular tumefaction in the kidney, myofibrolysis and edema in the heart, catarrhal enteritis and necrosis in the gastrointestinal tract, hyperemic processes in the gill lamellae, and high basophilia, degeneration and tumefaction of granular neurons in the brain. Vitamin E pretreatment was effective in preventing or ameliorating the abovementioned alterations induced by CYN. In addition, a morphometric study indicated that the average nuclear diameter of hepatocytes, and cross-sections of proximal and distal convoluted tubules, together with the cardiac fiber and capillaries diameters represent a useful tool to evaluate the damage induced by CYN. This is the first study reporting vitamin E prevention of histopathological damage in tissues (liver, kidney, heart, gastrointestinal tract, gills and brain) of fish intoxicated with CYN. Therefore, vitamin E can be considered a useful chemoprotectant in the treatment of histopathological changes induced in CYN-intoxicated fish. © 2015 Wiley Periodicals, Inc. Environ Toxicol 31: 1469-1485, 2016.
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Affiliation(s)
- Remedios Guzmán-Guillén
- Area of Toxicology, Faculty of Pharmacy. University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain.
| | - Ana I Prieto Ortega
- Area of Toxicology, Faculty of Pharmacy. University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
| | - Daniel Gutiérrez-Praena
- Area of Toxicology, Faculty of Pharmacy. University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
| | - Isabel M Moreno
- Area of Toxicology, Faculty of Pharmacy. University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
| | - Rosario Moyano
- Department of Pharmacology, Toxicology and Legal and Forensic Medicine, University of Córdoba, Campus De Rabanales Carretera Madrid-Cádiz S/N, Córdoba, 14071, Spain
| | - Alfonso Blanco
- Department of Anatomy and Comparative Pathology and Anatomy, University of Córdoba, Campus De Rabanales Carretera Madrid-Cádiz S/N, Córdoba, 14071, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy. University of Sevilla, C/Profesor García González 2, Sevilla, 41012, Spain
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Llana-Ruiz-Cabello M, Pichardo S, Bermúdez JM, Baños A, Núñez C, Guillamón E, Aucejo S, Cameán AM. Development of PLA films containing oregano essential oil (Origanum vulgare L. virens) intended for use in food packaging. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2016; 33:1374-86. [PMID: 27455176 DOI: 10.1080/19440049.2016.1204666] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Consumers' concerns about the environment and health have led to the development of new food packaging materials avoiding petroleum-based matrices and synthetic additives. The present study has developed polylactic acid (PLA) films containing different concentrations of essential oil from Origanum vulgare L. virens (OEO). The effectiveness of this new active packaging was checked for use in ready-to-eat salads. A plasticising effect was observed when OEO was incorporated in PLA films. The rest of the mechanical and physical properties of developed films did not show much change when OEO was included in the film. An antioxidant effect was recorded only for films containing the highest percentages of the active agent (5% and 10%). In addition, films exhibited in vitro antibacterial activity against Staphylococcus aureus, Yersinia enterocolitica, Listeria monocytogenes, Enterococcus faecalis and Staphylococcus carnosus. Moreover, in ready-to-eat salads, antimicrobial activity was only observed against yeast and moulds, where 5% and 10% of OEO was the most effective.
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Affiliation(s)
- M Llana-Ruiz-Cabello
- a Area of Toxicology, Faculty of Pharmacy , Universidad de Sevilla , Seville , Spain
| | - S Pichardo
- a Area of Toxicology, Faculty of Pharmacy , Universidad de Sevilla , Seville , Spain
| | - J M Bermúdez
- b Area of Packaging Materials and Systems , ITENE , Paterna , Valencia , Spain
| | - A Baños
- c DOMCA S.A ., Alhendín , Granada , Spain
| | - C Núñez
- c DOMCA S.A ., Alhendín , Granada , Spain
| | | | - S Aucejo
- b Area of Packaging Materials and Systems , ITENE , Paterna , Valencia , Spain
| | - A M Cameán
- a Area of Toxicology, Faculty of Pharmacy , Universidad de Sevilla , Seville , Spain
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Llana-Ruíz-Cabello M, Pichardo S, Jiménez-Morillo NT, Bermúdez JM, Aucejo S, González-Vila FJ, Cameán AM, González-Pérez JA. Molecular characterisation of a bio-based active packaging containing Origanum vulgare L. essential oil using pyrolysis gas chromatography-mass spectrometry. J Sci Food Agric 2016; 96:3207-3212. [PMID: 26478463 DOI: 10.1002/jsfa.7502] [Citation(s) in RCA: 8] [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: 03/26/2015] [Revised: 09/23/2015] [Accepted: 10/14/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Environmental, economic and safety challenges motivate shift towards safer materials for food packaging. New bioactive packaging techniques, i.e. addition of essential plant oils (EOs), are gaining attention by creating barriers to protect products from spoilage. Analytical pyrolysis gas chromatography-mass spectrometry (Py-GC-MS) was used to fingerprint a bioactive polylactic acid (PLA) with polybutylene succinate (PBS) (950 g kg(-1) :50 g kg(-1) ) film extruded with variable quantities (0, 20, 50 and 100 g kg(-1) ) of Origanum vulgare EO. RESULTS Main PLA:PBS pyrolysis products were lactide enantiomers and monomer units from the major PLA fraction and succinic acid anhydride from the PBS fraction. Oregano EO pyrolysis released cymene, terpinene and thymol/carvacrol peaks as diagnostic peaks for EO. In fact, linear correlation coefficients better than 0.950R(2) value (P < 0.001) were found between the chromatographic area of the diagnostic peaks and the amount of oregano EO in the bioplastic. CONCLUSION The pyrolytic behaviour of a bio-based active package polymer including EO is studied in detail. Identified diagnostic compounds provide a tool to monitor the quantity of EO incorporated into the PLA:PBS polymeric matrix. Analytical pyrolysis is proposed as a rapid technique for the identification and quantification of additives within bio-based plastic matrices. © 2015 Society of Chemical Industry.
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Affiliation(s)
- María Llana-Ruíz-Cabello
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n° 2, 41012, Seville, Spain
| | - Silvia Pichardo
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n° 2, 41012, Seville, Spain
| | | | - José M Bermúdez
- Area of Packaging Materials and Systems, ITENE, C/ Albert Einstein 1, 46980, Paterna, Valencia, Spain
| | - Susana Aucejo
- Area of Packaging Materials and Systems, ITENE, C/ Albert Einstein 1, 46980, Paterna, Valencia, Spain
| | | | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n° 2, 41012, Seville, Spain
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Mellado-García P, Puerto M, Prieto AI, Pichardo S, Martín-Cameán A, Moyano R, Blanco A, Cameán AM. Genotoxicity of a thiosulfonate compound derived from Allium sp. intended to be used in active food packaging: In vivo comet assay and micronucleus test. Mutat Res Genet Toxicol Environ Mutagen 2016; 800-801:1-11. [PMID: 27085469 DOI: 10.1016/j.mrgentox.2016.03.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 03/02/2016] [Indexed: 01/15/2023]
Abstract
Components of Allium species have antimicrobial and antioxidant properties. A commercial Allium sp. extract (Proallium AP(®)), of which the main constituent is propyl thiosulphinate oxide (PTSO), is being used in the development of active food packaging. In previous in vitro genotoxicity studies, PTSO, in the presence of metabolic activation, increased the appearance of micronuclei (MN). We assessed the genotoxicity PTSO in rats following oral administration (doses: 5.5, 17.4, and 55mg/kg). The comet assay in liver and stomach (OECD 489) and the MN assay in bone marrow (OECD 474) were carried out. After necropsy, histopathological examinations of the liver and the stomach were performed. The results revealed no in vivo genotoxicity and the histopathological analysis showed only slight modifications, such as increased glycogen storage in the liver and a degenerative process in stomach, with vacuolization of cell membranes, only at the highest dose. Therefore, the present work confirms that this compound is not genotoxic and could be considered as a natural alternative to synthetic preservatives used in the food packaging industry.
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Affiliation(s)
- Pilar Mellado-García
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Seville, Spain
| | - María Puerto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Seville, Spain
| | - Ana I Prieto
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Seville, Spain
| | - Silvia Pichardo
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Seville, Spain
| | - Ana Martín-Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Seville, Spain
| | - Rosario Moyano
- Department of Pharmacology, Toxicology and Legal and Forensic Medicine, Faculty of Veterinary Medicine, University of Córdoba, Campus de Rabanales, Córdoba, Spain
| | - Alfonso Blanco
- Department of Anatomy and Comparative Pathology and Anatomy, University of Córdoba, Campus de Rabanales, Córdoba, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Profesor García González n°2, 41012 Seville, Spain.
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Maisanaba S, Jordá-Beneyto M, Cameán AM, Jos Á. Effects of two organomodified clays intended to food contact materials on the genomic instability and gene expression of hepatoma cells. Food Chem Toxicol 2016; 88:57-64. [DOI: 10.1016/j.fct.2015.12.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 11/27/2015] [Accepted: 12/18/2015] [Indexed: 10/22/2022]
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Martín-Cameán A, Jos A, Puerto M, Calleja A, Iglesias-Linares A, Solano E, Cameán AM. In vivo determination of aluminum, cobalt, chromium, copper, nickel, titanium and vanadium in oral mucosa cells from orthodontic patients with mini-implants by Inductively coupled plasma-mass spectrometry (ICP-MS). J Trace Elem Med Biol 2015; 32:13-20. [PMID: 26302907 DOI: 10.1016/j.jtemb.2015.05.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [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: 03/03/2015] [Revised: 04/22/2015] [Accepted: 05/12/2015] [Indexed: 11/17/2022]
Abstract
Miniscrews are used as orthodontic anchorage devices in the dentistry clinical practice but the in vivo metallic release from these structures has been not previously investigated. The aim of this study was to determine the content of Al, Co, Cr, Cu, Ni, Ti and V in oral mucosa cells of control subjects, patients under orthodontic treatment and with both, orthodontic treatment and miniscrew, in order to know the contribution of these mini-implants to the total metallic content. ICP-MS measurements revealed the following ascending order: Cr<Ni<Ti<Cu<Al, and Co and V were practically undetected. Significant differences in comparison to the control group were found for Cu in the orthodontic group, and for Ni in both, orthodontic and orthodontic+miniscrew groups. Potential correlations among metallic elements and with some clinical factors were also explored. These findings suggest that miniscrews do not increase significantly the metal release.
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Affiliation(s)
- Ana Martín-Cameán
- Stomatology Department, School of Dentistry, University of Seville, Spain
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Seville, Spain
| | - Maria Puerto
- Area of Toxicology, Faculty of Pharmacy, University of Seville, Spain
| | - Ana Calleja
- Investigation, Technology and Innovation Center, University of Seville, Spain
| | | | - Enrique Solano
- Stomatology Department, School of Dentistry, University of Seville, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Seville, Spain.
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Guzmán-Guillén R, Prieto Ortega AI, Martín-Caméan A, Cameán AM. Beneficial effects of vitamin E supplementation against the oxidative stress on Cylindrospermopsin-exposed tilapia (Oreochromis niloticus). Toxicon 2015; 104:34-42. [DOI: 10.1016/j.toxicon.2015.07.336] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 07/21/2015] [Accepted: 07/23/2015] [Indexed: 11/15/2022]
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Martín-Cameán A, Jos A, Cameán AM, Solano E, Iglesias-Linares A. Genotoxic and cytotoxic effects and gene expression changes induced by fixed orthodontic appliances in oral mucosa cells of patients: a systematic review. Toxicol Mech Methods 2015; 25:440-7. [PMID: 26156198 DOI: 10.3109/15376516.2015.1062951] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
CONTEXT The accumulation of chronic or severe acute DNA and cellular damage in oral mucosa cells is one of the main factors that help initiate a wide range of malignant lesions in the oral cavity. There has been considerable controversy in the literature about the effect of such sustained genotoxic and cytotoxic damage to oral mucosa cells. OBJECTIVE The aim of this systematic review, reported in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, is to investigate the effects of such interventions. METHODS Electronic and manual searches were performed (15 May 2015) for Randomized Clinical Trials/quasi-Randomized Clinical Trials that analyzed the genotoxic/cytotoxic effects of these types of oral appliances in humans. A primary outcome (cell/DNA damage) and a number of secondary outcomes were examined. Two reviewers carried out the study selection and performed a "risk of bias" assessment [Cochrane Collaboration's tool]. Wherever possible the meta-analysis was conducted on homogenous groups. RESULTS From the electronic search (2797), 6 studies met the eligibility criteria. Most studies (5/6) observed significant differences in most comparisons at the short-term (1-3 months) and long-term (24-48 months) evaluations, with respect to critically acute genotoxic/cytotoxic effects. Some of the studies (2/3) concluded that the post-removable effects at DNA/cellular levels were not significant (p > 0.05) with respect to the controls. CONCLUSIONS Acute DNA/cellular damage in oral mucosa cells is induced by orthodontic appliances. Nevertheless, even though these effects were no longer detected after removing the appliances, more rigorous RCTs are needed to explore the extent to which acquired damage can be observed in the oral mucosa.
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Affiliation(s)
- Ana Martín-Cameán
- a Department of Stomatology , School of Dentistry, University of Seville , Seville , Spain
| | - Angeles Jos
- b Area of Toxicology, Faculty of Pharmacy , University of Seville , Seville , Spain , and
| | - Ana M Cameán
- b Area of Toxicology, Faculty of Pharmacy , University of Seville , Seville , Spain , and
| | - Enrique Solano
- a Department of Stomatology , School of Dentistry, University of Seville , Seville , Spain
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Martín-Cameán A, Jos Á, Mellado-García P, Iglesias-Linares A, Solano E, Cameán AM. In vitro and in vivo evidence of the cytotoxic and genotoxic effects of metal ions released by orthodontic appliances: A review. Environ Toxicol Pharmacol 2015; 40:86-113. [PMID: 26093195 DOI: 10.1016/j.etap.2015.05.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [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: 04/07/2015] [Revised: 05/13/2015] [Accepted: 05/16/2015] [Indexed: 06/04/2023]
Abstract
Intraoral fixed orthodontic appliances are frequently used in the clinical practice of dentistry. They are made from alloys containing different metals at various percentages. The use of these appliances leads to the long-term exposure of patients to these materials, and the potential toxic effects of this exposure raises concerns about patient safety. Thus, the biocompatibility (corrosion behaviour and toxicity) of these materials has to be evaluated prior to clinical use. In the present report, the most recent studies in the scientific literature examining metal ion release from orthodontic appliances and the toxic effects of these ions have been reviewed with a special focus on cytotoxicity and genotoxicity. Previous studies suggest that a case-by-case safety evaluation is required to take into account the increasing variability of materials, their composition and the manufacturing processes. Moreover, in vivo toxicity studies in regard to metal release, cytotoxicity and genotoxicity are still scarce. Therefore, in vitro and in vivo monitoring studies are needed to establish cause-effect relationships between metal ion release and biomarkers of cytotoxicity and genotoxicity. Further investigations could be performed to elucidate the toxic mechanisms involved in the observed effects with a special emphasis on oxidative damage.
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Affiliation(s)
- Ana Martín-Cameán
- Stomatology Department, School of Dentistry, University of Sevilla, Spain.
| | - Ángeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Spain
| | | | | | - Enrique Solano
- Stomatology Department, School of Dentistry, University of Sevilla, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Spain
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Martín-Cameán A, Puerto M, Jos Á, Azqueta A, Iglesias-Linares A, Solano E, Cameán AM. Preliminary study of genotoxicity evaluation of orthodontic miniscrews on mucosa oral cells by the alkaline comet assay. Toxicol Mech Methods 2015; 25:487-93. [PMID: 26062010 DOI: 10.3109/15376516.2015.1053652] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Miniscrew implants are widely used nowadays in orthodontic treatments due to their good results in clinical practice. However, data regarding the biocompatibility of commercially available orthodontic miniscrews and temporary devices are very scarce, and their role as genotoxicity inducers has been not previously evaluated with the alkaline comet assay. The aim of this study was to investigate the DNA damage in buccal cells of patients subjected to orthodontic treatments. The alkaline comet assay has been applied in oral mucosa cells from patients treated with conventional orthodontic treatment in comparison to patients treated additionally with miniscrews, non-treated volunteers (control) and smoking volunteers (positive control). The application of orthodontic appliances and miniscrews induced significant and similar (2-fold) increases of %DNA in tail in comparison to control group. Females experienced a significant increase in %DNA in all the treatments in comparison to the control group, whereas males showed significant damage only with the combined orthodontic and miniscrew treatment. In conclusion, conventional orthodontic appliances induced genotoxicity, and the incorporation of miniscrews assayed did not imply any additional increase of DNA damage.
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Affiliation(s)
- Ana Martín-Cameán
- a Stomatology Department , School of Dentistry, University of Sevilla , Sevilla , Spain
| | - María Puerto
- b Area of Toxicology, Faculty of Pharmacy, University of Sevilla , Sevilla , Spain
| | - Ángeles Jos
- b Area of Toxicology, Faculty of Pharmacy, University of Sevilla , Sevilla , Spain
| | - Amaya Azqueta
- c Department of Pharmacology and Toxicology, Faculty of Pharmacy , University of Navarra , Navarra , Spain , and
| | | | - Enrique Solano
- a Stomatology Department , School of Dentistry, University of Sevilla , Sevilla , Spain
| | - Ana M Cameán
- b Area of Toxicology, Faculty of Pharmacy, University of Sevilla , Sevilla , Spain
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