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Ferrão L, Blanes-García M, Pérez L, Asturiano JF, Morini M. Superoxidase dismutases (SODs) in the European eel: Gene characterization, expression response to temperature combined with hormonal maturation and possible migratory implications. Comp Biochem Physiol A Mol Integr Physiol 2024; 290:111590. [PMID: 38281705 DOI: 10.1016/j.cbpa.2024.111590] [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: 11/07/2023] [Revised: 01/25/2024] [Accepted: 01/25/2024] [Indexed: 01/30/2024]
Abstract
Superoxide dismutases (SODs) are antioxidant enzymes that protect cells from oxidation. Three SODs have been identified in mammals, but there is limited information in teleosts. This study investigates SODs in the European eel and their expression patterns during testis maturation. Phylogenetic and synteny analyses revealed SODs paralogs and their evolution in vertebrates. The eel possesses one SOD1 and two SOD2/3 (a and b), indicating SOD2 and SOD3 duplication in elopomorphs. SODs expression were then evaluated in various male and female tissues. SOD1 is more expressed in females, while SOD2a and SOD2b dominate brain-pituitary-gonad tissues in both sexes. SOD3a showed predominant expression in the ovary and the male livers, whereas SOD3b was found in the pituitary and brain of both sexes. The effects of different maturation protocols (standard hormonal treatment vs. same protocol preceded with cold seawater pre-treatment) on SODs expression during testis maturation were evaluated. Salinity increase at the onset of standard treatment at 20 °C, simulating early migration, upregulated SOD1, SOD2a, and SOD2b, coinciding with spermatogonia type A differentiated cells dominance. Thereafter, SOD2a and SOD3a decreased, while SOD2b increased during hormonal treatment-induced spermatogenesis. Pre-treatment with seawater at 10 °C, mimicking the conditions at the beginning of the seawater migration, downregulated SOD1 but increased SOD3a expression. Finally, the standard hormonal treatment, replicating spawning at higher temperatures, downregulated SOD1 in eels without any pre-treatment while SOD2a expression increased in pre-treated eels. This study revealed tissue-specific, sex-dependent, and maturation-related SOD expression patterns, predicting SODs dynamic expression profiles during their reproductive migration.
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Affiliation(s)
- L Ferrão
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - M Blanes-García
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - L Pérez
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - J F Asturiano
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - M Morini
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain.
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Barrio R, Jover-Galtier JA, Martínez MA, Pérez L, Serrano S. Mathematical birth of Early Afterdepolarizations in a cardiomyocyte model. Math Biosci 2023; 366:109088. [PMID: 37863283 DOI: 10.1016/j.mbs.2023.109088] [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: 04/13/2023] [Revised: 09/20/2023] [Accepted: 10/17/2023] [Indexed: 10/22/2023]
Abstract
Early Afterdepolarizations (EADs) are abnormal behaviors that can lead to cardiac failure and even cardiac death. In this paper we investigate the occurrence and development of these phenomena in a reduced Luo-Rudy cardiac model. Through a comprehensive dynamical analysis, we map out the distinct patterns observed in the parametric plane, differentiating between normal beats without EADs and pathological beats with EADs. By examining the bifurcation structure of the model, we elucidate the dynamical elements associated with these patterns and their transitions. Using a fast-slow analysis, we explore the emergence and evolution of EADs in the model. Notably, our approach combines the two commonly used fast-slow approaches (1-slow-2-fast and 2-slow-1-fast), and we show how both approaches together provide a more complete understanding of this phenomenon.
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Affiliation(s)
- R Barrio
- IUMA, CoDy and Dpto. Matemática Aplicada, Universidad de Zaragoza, E-50009 Zaragoza, Spain.
| | - J A Jover-Galtier
- IUMA, CoDy and Dpto. Matemática Aplicada, Universidad de Zaragoza, E-50009 Zaragoza, Spain.
| | - M A Martínez
- IUMA, CoDy and Dpto. Matemática Aplicada, Universidad de Zaragoza, E-50009 Zaragoza, Spain.
| | - L Pérez
- Dpto. Matemáticas, University of Oviedo, Oviedo E-33007, Spain.
| | - S Serrano
- IUMA, CoDy and Dpto. Matemática Aplicada, Universidad de Zaragoza, E-50009 Zaragoza, Spain.
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Meier K, Jachmann LH, Türköz G, Babu Sait MR, Pérez L, Kepp O, Valdivia RH, Kroemer G, Sixt BS. The Chlamydia effector CpoS modulates the inclusion microenvironment and restricts the interferon response by acting on Rab35. mBio 2023; 14:e0319022. [PMID: 37530528 PMCID: PMC10470785 DOI: 10.1128/mbio.03190-22] [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: 05/15/2023] [Accepted: 06/13/2023] [Indexed: 08/03/2023] Open
Abstract
The obligate intracellular bacterium Chlamydia trachomatis inserts a family of inclusion membrane (Inc) proteins into the membrane of its vacuole (the inclusion). The Inc CpoS is a critical suppressor of host cellular immune surveillance, but the underlying mechanism remained elusive. By complementing a cpoS mutant with various natural orthologs and variants of CpoS, we linked distinct molecular interactions of CpoS to distinct functions. Unexpectedly, we found CpoS to be essential for the formation of inclusion membrane microdomains that control the spatial organization of multiple Incs involved in signaling and modulation of the host cellular cytoskeleton. While the function of CpoS in microdomains was uncoupled from its role in the suppression of host cellular defenses, we found the ability of CpoS to interact with Rab GTPases to be required not only for the manipulation of membrane trafficking, such as to mediate transport of ceramide-derived lipids (sphingolipids) to the inclusion, but also for the inhibition of Stimulator of interferon genes (STING)-dependent type I interferon responses. Indeed, depletion of Rab35 phenocopied the exacerbated interferon responses observed during infection with CpoS-deficient mutants. Overall, our findings highlight the role of Inc-Inc interactions in shaping the inclusion microenvironment and the modulation of membrane trafficking as a pathogenic immune evasion strategy. IMPORTANCE Chlamydia trachomatis is a prevalent bacterial pathogen that causes blinding ocular scarring and urogenital infections that can lead to infertility and pregnancy complications. Because Chlamydia can only grow within its host cell, boosting the intrinsic defenses of human cells may represent a novel strategy to fight pathogen replication and survival. Hence, CpoS, a Chlamydia protein known to block host cellular defenses, or processes regulated by CpoS, could provide new opportunities for therapeutic intervention. By revealing CpoS as a multifunctional virulence factor and by linking its ability to block host cellular immune signaling to the modulation of membrane trafficking, the present work may provide a foundation for such rationale targeting and advances our understanding of how intracellular bacteria can shape and protect their growth niche.
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Affiliation(s)
- Karsten Meier
- Department of Molecular Biology, Umeå University, Umeå, Sweden
- The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
- Umeå Centre for Microbial Research (UCMR), Umeå University, Umeå, Sweden
| | - Lana H. Jachmann
- Department of Molecular Biology, Umeå University, Umeå, Sweden
- The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
- Umeå Centre for Microbial Research (UCMR), Umeå University, Umeå, Sweden
| | - Gözde Türköz
- Department of Molecular Biology, Umeå University, Umeå, Sweden
- The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
- Umeå Centre for Microbial Research (UCMR), Umeå University, Umeå, Sweden
| | - Mohammed Rizwan Babu Sait
- Department of Molecular Biology, Umeå University, Umeå, Sweden
- The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
- Umeå Centre for Microbial Research (UCMR), Umeå University, Umeå, Sweden
| | - Lucía Pérez
- Department of Molecular Biology, Umeå University, Umeå, Sweden
- The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
- Umeå Centre for Microbial Research (UCMR), Umeå University, Umeå, Sweden
| | - Oliver Kepp
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
| | - Raphael H. Valdivia
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Guido Kroemer
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
- Department of Biology, Institut du Cancer Paris CARPEM, Hôpital Européen Georges-Pompidou, AP-HP, Paris, France
| | - Barbara S. Sixt
- Department of Molecular Biology, Umeå University, Umeå, Sweden
- The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
- Umeå Centre for Microbial Research (UCMR), Umeå University, Umeå, Sweden
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Castilla M, Pérez S, Guevara R, Alemany J, Campos M, Pla M, Ortega C, Falo C, Benítez A, Bajen M, Pérez L, Valdivielso A, Martínez E, Plana ML, Pérez H, Petit A, Soler T, Taco C, Ponce J, García A. P085 Target axillary disecction in cN2 breast cancer patients after neoadjuvant chemotherapy. Preliminary results. Breast 2023. [DOI: 10.1016/s0960-9776(23)00202-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
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Vainman S, Heller False Speiser MM, Posadas Martinez ML, Pérez L, Aguirre MA, Cortines Lapalma MC, Sánchez MC, Mulli V, De Cunto CL. Experience with the transition process of adolescents with chronic diseases from pediatric to adult care in a general hospital. ARCH ARGENT PEDIATR 2022; 120:398-404. [PMID: 36374058 DOI: 10.5546/aap.2022.eng.398] [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: 12/17/2021] [Accepted: 03/18/2022] [Indexed: 06/16/2023]
Abstract
INTRODUCTION The continuity of care from pediatrics to adult medicine is key to optimal health care. OBJECTIVE To describe the experience of the transition process of adolescent patients with chronic diseases from pediatric to adult care in a general hospital. POPULATION AND METHODS Cross-sectional study of patients aged 16-24 years with a history of liver transplantation, kidney transplantation, endocrine, metabolic, rheumatic diseases, and myelomeningocele seen at a tertiary care teaching general hospital between 2015 and 2019 during the transition process. The process of health care and transition success were assessed. The Transition Readiness Assessment Questionnaire (TRAQ) was used. RESULTS A total of 372 patients were included. The myelomeningocele clinic, the kidney transplant and the liver transplant teams were the most common specialties. Thirty-seven percent of participants were involved in the transition process. The mean duration of follow-up by pediatrics until transition initiation was 9 years. The mean age at the beginning of transition was 19 years, and the mean age at the end, 21 years. The joint clinic transition strategy was the most frequent, used in 96% of cases. The median value of the ordinal TRAQ was 4; of these, 32% had already seen adult care physicians. A successful transition was achieved by 32.7%. CONCLUSIONS The continuity of care during transition is a process that took almost 2 years; more than one third of the patients had a successful transition.
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Affiliation(s)
- Sara Vainman
- Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | | | | | - Lucía Pérez
- Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - María A Aguirre
- Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | | | - María C Sánchez
- Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Valeria Mulli
- Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Carmen L De Cunto
- Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina.
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Farizano Salazar DH, Achinelli F, Colonna M, Pérez L, Giménez AA, Ojeda MA, Miranda Puente SN, Sánchez Negrette L, Cañete F, Martelotte Ibarra OI, Sanguineti S, Spatz L, Goldbaum FA, Massa C, Rivas M, Pichel M, Hiriart Y, Zylberman V, Gallego S, Konigheim B, Fernández F, Deprati M, Roubicek I, Giunta DH, Nannini E, Lopardo G, Belloso WH. Safety and effectiveness of RBD-specific polyclonal equine F(ab´)2 fragments for the treatment of hospitalized patients with severe Covid-19 disease: A retrospective cohort study. PLoS One 2022; 17:e0274796. [PMID: 36155545 PMCID: PMC9512184 DOI: 10.1371/journal.pone.0274796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 09/03/2022] [Indexed: 12/15/2022] Open
Abstract
Background
Passive immunotherapy has been evaluated as a therapeutic alternative for patients with COVID-19 disease. Equine polyclonal immunotherapy for COVID-19 (EPIC) showed adequate safety and potential efficacy in a clinical trial setting and obtained emergency use authorization in Argentina. We studied its utility in a real world setting with a larger population.
Methods
We conducted a retrospective cohort study at “Hospital de Campaña Escuela-Hogar" (HCEH) in Corrientes, Argentina, to assess safety and effectiveness of EPIC in hospitalized adults with severe COVID-19 pneumonia. Primary endpoints were 28-days all-cause mortality and safety. Mortality and improvement in modified WHO clinical scale at 14 and 21 days were secondary endpoints. Potential confounder adjustment was made by logistic regression weighted by the inverse of the probability of receiving the treatment (IPTW) and doubly robust approach.
Findings
Subsequent clinical records of 446 non-exposed (Controls) and 395 exposed (EPIC) patients admitted between November 2020 and April 2021 were analyzed. Median age was 58 years and 56.8% were males. Mortality at 28 days was 15.7% (EPIC) vs. 21.5% (Control). After IPTW adjustment the OR was 0.66 (95% CI: 0.46–0.96) P = 0.03. The effect was more evident in the subgroup who received two EPIC doses (complete treatment, n = 379), OR 0.58 (95% CI 0.39 to 0.85) P = 0.005. Overall and serious adverse events were not significantly different between groups.
Conclusions
In this retrospective cohort study, EPIC showed adequate safety and effectiveness in the treatment of hospitalized patients with severe SARS-CoV-2 disease.
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Affiliation(s)
| | | | | | - Lucía Pérez
- Department of Research, Hospital Italiano de Buenos Aires. Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Analía A. Giménez
- Hospital de Campaña Escuela Hogar, Corrientes, Corrientes, Argentina
| | | | | | | | - Florencia Cañete
- Hospital de Campaña Escuela Hogar, Corrientes, Corrientes, Argentina
| | | | | | - Linus Spatz
- Inmunova S.A., Gral. San Martín, Buenos Aires, Argentina
| | - Fernando A. Goldbaum
- Inmunova S.A., Gral. San Martín, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
- Fundación Instituto Leloir, IIBBA-CONICET. Ciudad Autónoma de Buenos Aires, Argentina
- CRIP—Centro de Rediseño e Ingeniería de Proteínas UNSAM Campus Miguelete, Gral. San Martín, Buenos Aires, Argentina
| | - Carolina Massa
- Inmunova S.A., Gral. San Martín, Buenos Aires, Argentina
| | - Marta Rivas
- Inmunova S.A., Gral. San Martín, Buenos Aires, Argentina
| | - Mariana Pichel
- Inmunova S.A., Gral. San Martín, Buenos Aires, Argentina
| | - Yanina Hiriart
- Inmunova S.A., Gral. San Martín, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Vanesa Zylberman
- Inmunova S.A., Gral. San Martín, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Sandra Gallego
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
- Instituto de Virología Dr. José María Vanella, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Brenda Konigheim
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
- Instituto de Virología Dr. José María Vanella, Universidad Nacional de Córdoba, Córdoba, Argentina
| | | | - Matías Deprati
- Laboratorio Elea Phoenix S.A., Los Polvorines, Buenos Aires, Argentina
| | - Ian Roubicek
- Inmunova S.A., Gral. San Martín, Buenos Aires, Argentina
| | - Diego H. Giunta
- Department of Research, Hospital Italiano de Buenos Aires. Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Esteban Nannini
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
- Departamento de Enfermedades Infecciosas, Sanatorio Británico, Rosario, Santa Fe, Argentina
| | - Gustavo Lopardo
- Hospital Municipal Dr. Bernardo Houssay, Florida, Provincia de Buenos Aires, Argentina
- Fundación del Centro de Estudios Infectológicos (FUNCEI), Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Waldo H. Belloso
- Department of Research, Hospital Italiano de Buenos Aires. Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
- * E-mail:
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Martín-Arana J, Gimeno-Valiente F, Tébar-Martínez R, García-Mico B, Gambardella V, Huerta M, Martínez-Ciarpaglini C, Carbonell-Asins J, Cabeza Segura M, Martín-Arévalo J, Casado D, Pla V, Pérez L, Rentero-Garrido P, Rosello Keranen S, Fleitas T, Castillo J, Roda Perez D, Cervantes A, Tarazona Llavero N. 379P Whole exome sequencing of plasma circulating tumor DNA identifies dynamic mutational changes to guide targeted therapies in colon cancer patients. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Pérez L, Alves R, Perez-Fons L, Albacete A, Farré G, Soto E, Vilaprinyó E, Martínez-Andújar C, Basallo O, Fraser PD, Medina V, Zhu C, Capell T, Christou P. Multilevel interactions between native and ectopic isoprenoid pathways affect global metabolism in rice. Transgenic Res 2022; 31:249-268. [PMID: 35201538 PMCID: PMC8993735 DOI: 10.1007/s11248-022-00299-6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 01/28/2022] [Indexed: 11/29/2022]
Abstract
Isoprenoids are natural products derived from isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP). In plants, these precursors are synthesized via the cytosolic mevalonate (MVA) and plastidial methylerythritol phosphate (MEP) pathways. The regulation of these pathways must therefore be understood in detail to develop effective strategies for isoprenoid metabolic engineering. We hypothesized that the strict regulation of the native MVA pathway could be circumvented by expressing an ectopic plastidial MVA pathway that increases the accumulation of IPP and DMAPP in plastids. We therefore introduced genes encoding the plastid-targeted enzymes HMGS, tHMGR, MK, PMK and MVD and the nuclear-targeted transcription factor WR1 into rice and evaluated the impact of their endosperm-specific expression on (1) endogenous metabolism at the transcriptomic and metabolomic levels, (2) the synthesis of phytohormones, carbohydrates and fatty acids, and (3) the macroscopic phenotype including seed morphology. We found that the ectopic plastidial MVA pathway enhanced the expression of endogenous cytosolic MVA pathway genes while suppressing the native plastidial MEP pathway, increasing the production of certain sterols and tocopherols. Plants carrying the ectopic MVA pathway only survived if WR1 was also expressed to replenish the plastid acetyl-CoA pool. The transgenic plants produced higher levels of fatty acids, abscisic acid, gibberellins and lutein, reflecting crosstalk between phytohormones and secondary metabolism.
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Affiliation(s)
- Lucía Pérez
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Rui Alves
- Departament de Cienciès Mèdiques Bàsiques, Universitat de Lleida, Lleida, Spain
| | - Laura Perez-Fons
- School of Biological Sciences, Royal Holloway University of London, Egham Hill, UK
| | - Alfonso Albacete
- Departament of Plant Nutrition, Center of Edaphology and Applied Biology of the Segura (CEBAS), Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario de Espinardo, 30100, Murcia, Espinardo, Spain
- Department of Plant Production and Agrotechnology, Institute for Agri-Food Research and Development of Murcia, Murcia, La Alberca, Spain
| | - Gemma Farré
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Erika Soto
- Department of Chemistry, University of Lleida-Agrotecnio Center, Lleida, Spain
| | - Ester Vilaprinyó
- Departament de Cienciès Mèdiques Bàsiques, Universitat de Lleida, Lleida, Spain
- IRBLleida, Lleida, Catalunya, Spain
| | - Cristina Martínez-Andújar
- Departament of Plant Nutrition, Center of Edaphology and Applied Biology of the Segura (CEBAS), Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario de Espinardo, 30100, Murcia, Espinardo, Spain
| | - Oriol Basallo
- Departament de Cienciès Mèdiques Bàsiques, Universitat de Lleida, Lleida, Spain
| | - Paul D Fraser
- School of Biological Sciences, Royal Holloway University of London, Egham Hill, UK
| | - Vicente Medina
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Changfu Zhu
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Teresa Capell
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Paul Christou
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain.
- Catalan Institute for Research and Advanced Studies (ICREA), Barcelona, Spain.
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Barrio R, Ibáñez S, Pérez L, Serrano S. Classification of fold/hom and fold/Hopf spike-adding phenomena. Chaos 2021; 31:043120. [PMID: 34251261 DOI: 10.1063/5.0037942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 03/26/2021] [Indexed: 06/13/2023]
Abstract
The Hindmarsh-Rose neural model is widely accepted as an important prototype for fold/hom and fold/Hopf burstings. In this paper, we are interested in the mechanisms for the production of extra spikes in a burst, and we show the whole parametric panorama in an unified way. In the fold/hom case, two types are distinguished: a continuous one, where the bursting periodic orbit goes through bifurcations but persists along the whole process and a discontinuous one, where the transition is abrupt and happens after a sequence of chaotic events. In the former case, we speak about canard-induced spike-adding and in the second one, about chaos-induced spike-adding. For fold/Hopf bursting, a single (and continuous) mechanism is distinguished. Separately, all these mechanisms are presented, to some extent, in the literature. However, our full perspective allows us to construct a spike-adding map and, more significantly, to understand the dynamics exhibited when borders are crossed, that is, transitions between types of processes, a crucial point not previously studied.
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Affiliation(s)
- Roberto Barrio
- Departamento de Matemática Aplicada and IUMA, Computational Dynamics Group, University of Zaragoza, Zaragoza E-50009, Spain
| | - Santiago Ibáñez
- Departamento de Matemáticas, University of Oviedo, E-33007 Oviedo, Spain
| | - Lucía Pérez
- Departamento de Matemáticas, University of Oviedo, E-33007 Oviedo, Spain
| | - Sergio Serrano
- Departamento de Matemática Aplicada and IUMA, Computational Dynamics Group, University of Zaragoza, Zaragoza E-50009, Spain
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García-Rodríguez F, Piccini C, Carrizo D, Sánchez-García L, Pérez L, Crisci C, Oaquim ABJ, Evangelista H, Soutullo A, Azcune G, Lüning S. Centennial glacier retreat increases sedimentation and eutrophication in Subantarctic periglacial lakes: A study case of Lake Uruguay. Sci Total Environ 2021; 754:142066. [PMID: 33254911 DOI: 10.1016/j.scitotenv.2020.142066] [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: 05/01/2020] [Revised: 08/04/2020] [Accepted: 08/27/2020] [Indexed: 06/12/2023]
Abstract
High resolution XRF scanning documented inter-annual paleolimnological changes of a Subantarctic periglacial lake, during a process of centennial glacier retreat in King George Island, Antarctica. Two major paleoenvironmental stages were inferred from the combined analysis of elemental, molecular and isotopic biomarkers, with a boundary or transition set at about 3200 yr BP. The first stage was characterized by a relatively low allochthonous organic content, reduced productivity and nitrogen levels. Such paleoenvironmental conditions are interpreted as a terrestrial system under periglacial influence, where material influx was related to erosion process from the melt water discharge, because of the proximity to the Collins Glacier ice cap. After the major Holocene glacier advance dated at about 3500 yr BP, the ice cap retreat led to the formation of Lake Uruguay, which involved in filling processes leading to moraine deposits, proglacial meltwater channels, and lakes next to the land glacier. During the second stage, with the onset of the Current Warm Period, prior to 1900 CE the stabilization of the Zr/Rb ratio within the laminated sediments documented the origin of the lacustrine sedimentation system, with subsequent increases in the sedimentation rate and biomass content (total nitrogen and organic carbon). Time series analyses revealed that the lake displayed variability cycles related to El Niño Southern Oscillation (ENSO), as reflected by high resolution sedimentological proxies for grain size, weathering, allochthonous inputs from the watershed, increase of biomass and productivity, and changes in redox conditions, all of which displayed similar oscillation cycles from 2 to 6 yr. During this periglacial recession and associated eutrophication process, we detected a striking loss in both bacterial specific richness and diversity as inferred from preliminary selected ancient DNA analyses. Thus, the Antarctic warming scenario leading to glacier depletion appears to exert deterioration consequences on the Subantarctic microbial web.
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Affiliation(s)
- F García-Rodríguez
- Universidad de la República, Centro Universitario Regional Este, CURE Rocha y Maldonado, Uruguay; Universidade Federal de Rio Grande, Instituto de Oceanografia, Programa de Pós-Graduação em Oceanología, Rio Grande, Brazil.
| | - C Piccini
- Instituto de Investigaciones Biológicas Clemente Estable, Departamento de Microbiología, Av. Italia 3318, Montevideo 11600, Uruguay
| | - D Carrizo
- Centro de Astrobiología (CSIC-INTA), Madrid, Spain
| | | | - L Pérez
- Universidad de la República, Centro Universitario Regional Este, CURE Rocha y Maldonado, Uruguay
| | - C Crisci
- Universidad de la República, Centro Universitario Regional Este, CURE Rocha y Maldonado, Uruguay
| | - A B J Oaquim
- LARAMG/Universidade do Estado do Rio de Janeiro - UERJ, Departamento de Biofísica, Maracanã 0550900, RJ, Brazil
| | - H Evangelista
- LARAMG/Universidade do Estado do Rio de Janeiro - UERJ, Departamento de Biofísica, Maracanã 0550900, RJ, Brazil
| | - A Soutullo
- Universidad de la República, Centro Universitario Regional Este, CURE Rocha y Maldonado, Uruguay; Instituto Antártico Uruguayo, Montevideo, Uruguay
| | - G Azcune
- Universidad de la República, Centro Universitario Regional Este, CURE Rocha y Maldonado, Uruguay
| | - S Lüning
- Institute for Hydrography, Geoecology and Climate Sciences, Hauptstraße 47, 6315 Ägeri, Switzerland
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Pujol N, Mané A, Bergé D, Mezquida G, Amoretti S, Pérez L, González-Pinto A, Barcones F, Cuesta MJ, Sánchez-Tomico G, Vieta E, Castro-Fornieles J, Bernardo M, Parellada M. Influence of BDNF and MTHFR polymorphisms on hippocampal volume in first-episode psychosis. Schizophr Res 2020; 223:345-352. [PMID: 32988741 DOI: 10.1016/j.schres.2020.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 04/26/2020] [Accepted: 08/04/2020] [Indexed: 01/10/2023]
Abstract
BACKGROUND The BDNF and MTHFR genes are independently linked to the pathogenesis of schizophrenia and its neuroimaging correlates. The aim of this study was to explore, for the first time, the individual and interactional effects of the Val66Met and C677T polymorphisms on hippocampal atrophy in first-episode psychosis (FEP). METHOD Multi-site case-control study based on clinical, genetic (rs 6265, rs 1801133) and structural magnetic resonance imaging data from 98 non-affective FEP patients and 117 matched healthy controls (HC). Hippocampal volume was estimated using FreeSurfer software and this volume was compared between diagnostic (FEP vs HC) and genotype (Val66Met, C677T) groups. The BDNF Val66Met x MTHFR C677T effect on hippocampal volume was further evaluated through stratified analyses. RESULTS After applying Bonferroni correction, diagnosis showed a significant effect for adjusted left and right hippocampal volume (FEP < HC). Stratified analyses showed that the interactive effect contributed to adjusted hippocampal size in both the HC (left and right hippocampus) and FEP groups (right hippocampus); among BDNF Met carriers, those with the CT-TT genotype exhibited decreased hippocampal volume compared to individuals with the homozygous normal CC genotype. CONCLUSIONS Our results provide preliminary evidence indicating that the Val66Met x C677T interaction may be a potential genetic risk factor for reduced hippocampal size in both healthy controls and in patients with FEP. Further research in independent samples including different ethnic groups is warranted to confirm this new finding.
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Affiliation(s)
- Nuria Pujol
- Institute of Neuropsychiatry and Addiction of the Barcelona MAR Health Park, Barcelona, Spain; Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain.
| | - Anna Mané
- Institute of Neuropsychiatry and Addiction of the Barcelona MAR Health Park, Barcelona, Spain; Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain; Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Spain
| | - Daniel Bergé
- Institute of Neuropsychiatry and Addiction of the Barcelona MAR Health Park, Barcelona, Spain; Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain; Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Spain
| | - Gisela Mezquida
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Spain; Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Neuroscience Institute; August Pi I Sunyer Biomedical Research Institute (IDIBAPS); University of Barcelona, Barcelona, Spain
| | - Silvia Amoretti
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Spain; Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Neuroscience Institute; August Pi I Sunyer Biomedical Research Institute (IDIBAPS); University of Barcelona, Barcelona, Spain
| | - Lucía Pérez
- Institute of Neuropsychiatry and Addiction of the Barcelona MAR Health Park, Barcelona, Spain; Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Ana González-Pinto
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Spain; Servicio de Psiquiatría, Hospital Santiago, OSI Araba, Vitoria-Gasteiz, Spain
| | - Fe Barcones
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Spain; Department of Family Medicine, Hospital Universitario Miguel Servet, Instituto de Investigación Sanitaria Aragón (IIS Aragón), Zaragoza, Spain
| | - Manuel J Cuesta
- Department of Psychiatry, Complejo Hospitalario de Navarra, IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
| | - Georgina Sánchez-Tomico
- Institute of Neuropsychiatry and Addiction of the Barcelona MAR Health Park, Barcelona, Spain; Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Eduard Vieta
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Spain; Bipolar Disorder Unit, Institute of Neurosciences, August Pi I Sunyer Biomedical Research Institute (IDIBAPS), Hospital Clinic of Barcelona, University of Barcelona, Barcelona, Spain
| | - Josefina Castro-Fornieles
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Spain; Child and Adolescent Psychiatry and Psychology Department, 2017SGR881, Institute of Neurosciences, Hospital Clinic of Barcelona, Barcelona, Spain
| | - Miquel Bernardo
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Spain; Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Neuroscience Institute; August Pi I Sunyer Biomedical Research Institute (IDIBAPS); University of Barcelona, Barcelona, Spain
| | - Mara Parellada
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Spain; Child and Adolescent Psychiatry Department, Hospital General Universitario Gregorio Marañón School of Medicine, Universidad Complutense, IiSGM, Madrid, Spain
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Martínez-Murcia A, Bru G, Navarro A, Ros-Tárraga P, García-Sirera A, Pérez L. Comparative in silico design and validation of GPS™ CoVID-19 dtec-RT-qPCR test. J Appl Microbiol 2020; 130:2-13. [PMID: 32652813 PMCID: PMC7405274 DOI: 10.1111/jam.14781] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/06/2020] [Accepted: 07/06/2020] [Indexed: 12/13/2022]
Abstract
AIMS Providing a ready-to-use reverse transcriptase qPCR (RT-qPCR) method fully validated to detect the SARS-CoV-2 with a higher exclusivity than this shown by early published RT-qPCR designs. METHODS AND RESULTS The specificity of the GPS™ CoVID-19 dtec-RT-qPCR test by analysis of sequence alignments was approached and compared with other RT-qPCR designs. The GPS™ CoVID-19 dtec-RT-qPCR test was validated following criteria of UNE/EN ISO 17025:2005 and ISO/IEC 15189:2012. Diagnostic validation was achieved by two independent reference laboratories, the Instituto de Salud Carlos III, (Madrid, Spain), the Public Health England (Colindale, London, UK), and received the label CE-IVD. The GPS design showed the highest exclusivity and passed all parameters of validation with strict acceptance criteria. Results from reference laboratories 100% correlated with these obtained by using reference methods and showed 100% of diagnostic sensitivity and specificity. CONCLUSIONS The CE-IVD GPS™ CoVID-19 dtec-RT-qPCR test, available worldwide with full analytical and diagnostic validation, is the more exclusive for SARS-CoV-2 by far. SIGNIFICANCE AND IMPACT OF THE STUDY Considering the CoVID-19 pandemic status, the exclusivity of RT-qPCR tests is crucial to avoid false positives due to related coronaviruses. This work provides of a highly specific and validated RT-qPCR method for detection of SARS-CoV-2, which represents a case of efficient transfer of technology successfully used since the pandemic was declared.
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Affiliation(s)
- A Martínez-Murcia
- Department of Microbiology, University Miguel Hernández, Alicante, Spain.,Genetic PCR Solutions™, Elche, Alicante, Spain
| | - G Bru
- Genetic PCR Solutions™, Elche, Alicante, Spain
| | - A Navarro
- Genetic PCR Solutions™, Elche, Alicante, Spain
| | | | | | - L Pérez
- Genetic PCR Solutions™, Elche, Alicante, Spain
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Cano C, Pérez L, Támara J, Olaya N. Gamna-Gandy bodies in pediatric thyroid nodular hyperplasia. Human Pathology: Case Reports 2020. [DOI: 10.1016/j.ehpc.2020.200357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Saavedra MJ, Eymann A, Pérez L, Busaniche J, Nápoli N, Marantz P, Llera J. Health related quality of life in children with congenital heart disease that undergo cardiac surgery during their first year of life. ARCH ARGENT PEDIATR 2020; 118:166-172. [PMID: 32470251 DOI: 10.5546/aap.2020.eng.166] [Citation(s) in RCA: 2] [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: 04/15/2019] [Accepted: 10/21/2019] [Indexed: 11/12/2022]
Abstract
INTRODUCTION Advances in diagnostic methods, surgical techniques and postoperative intensive care have significantly increased the survival rates for children with congenital heart disease. In this context, long term sequelae acquired greater relevance. Health-related quality of life (HRQOL) is a concept that helps to measure the impact of chronic diseases. The purpose of the current study was to describe HRQOL in children with congenital heart disease that undergo cardiac surgery during their first year of life. METHODS A cross-sectional observational study was conducted between August 2017 and December 2018 at a University General Hospital. PedsQL 4.0 Generic Core Scales were used. Children with congenital heart disease between 2 and 4 years old who had cardiac surgery during their first year of life and healthy children were included. Scores were compared with T-test or Wilcoxon according to the observed distribution. p value < 0.05 was considered significant. RESULTS A total of 31 children with congenital heart disease (26 % with a single ventricle) and 62 healthy children were enrolled. The first surgery was in the neonatal period in 61.3 %. Our study showed no statistical differences (p = 0.10) between HRQOL Total Scale Score of children with congenital heart disease compared to healthy children. However, lower scores were observed with statistically significant differences in social (p = 0.0092) and school (p = 0.0001) scales. CONCLUSIONS Our cohort of children diagnosed with congenital heart disease has a global quality of life comparable with healthy children except in social and school functioning scales.
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Affiliation(s)
- Melina J Saavedra
- Servicio de Clínica Pediátrica, Departamento de Pediatría, Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires. .,Servicio de Cardiología Pediátrica, Departamento de Pediatría, Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires
| | - Alfredo Eymann
- Servicio de Clínica Pediátrica, Departamento de Pediatría, Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires
| | - Lucía Pérez
- Servicio de Clínica Pediátrica, Departamento de Pediatría, Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires
| | - Julio Busaniche
- Servicio de Clínica Pediátrica, Departamento de Pediatría, Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires
| | - Natalia Nápoli
- Servicio de Cardiología Pediátrica, Departamento de Pediatría, Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires
| | - Pablo Marantz
- Servicio de Cardiología Pediátrica, Departamento de Pediatría, Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires
| | - Julián Llera
- Servicio de Clínica Pediátrica, Departamento de Pediatría, Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires
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Barrio R, Ibáñez S, Pérez L. Homoclinic organization in the Hindmarsh-Rose model: A three parameter study. Chaos 2020; 30:053132. [PMID: 32491901 DOI: 10.1063/1.5138919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 04/24/2020] [Indexed: 06/11/2023]
Abstract
Bursting phenomena are found in a wide variety of fast-slow systems. In this article, we consider the Hindmarsh-Rose neuron model, where, as it is known in the literature, there are homoclinic bifurcations involved in the bursting dynamics. However, the global homoclinic structure is far from being fully understood. Working in a three-parameter space, the results of our numerical analysis show a complex atlas of bifurcations, which extends from the singular limit to regions where a fast-slow perspective no longer applies. Based on this information, we propose a global theoretical description. Surfaces of codimension-one homoclinic bifurcations are exponentially close to each other in the fast-slow regime. Remarkably, explained by the specific properties of these surfaces, we show how the Hindmarsh-Rose model exhibits isolas of homoclinic bifurcations when appropriate two-dimensional slices are considered in the three-parameter space. On the other hand, these homoclinic bifurcation surfaces contain curves corresponding to parameter values where additional degeneracies are exhibited. These codimension-two bifurcation curves organize the bifurcations associated with the spike-adding process and they behave like the "spines-of-a-book," gathering "pages" of bifurcations of periodic orbits. Depending on how the parameter space is explored, homoclinic phenomena may be absent or far away, but their organizing role in the bursting dynamics is beyond doubt, since the involved bifurcations are generated in them. This is shown in the global analysis and in the proposed theoretical scheme.
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Affiliation(s)
- Roberto Barrio
- Departamento de Matemática Aplicada and IUMA, University of Zaragoza, E-50009 Zaragoza, Spain
| | - Santiago Ibáñez
- Departamento de Matemáticas, University of Oviedo, E-33007 Oviedo, Spain
| | - Lucía Pérez
- Departamento de Matemáticas, University of Oviedo, E-33007 Oviedo, Spain
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Méndez M, Kourí V, Pérez L, Alemán Y, Martínez Y, Díaz D, Han R, Pintos Y, Soto Y, Baños Y, Caturla Y, Fonseca C, Pérez J. A7 Co-receptor tropism determined by genotypic assay in HIV-1 non-B subtypes circulating in Cuba: Implications for pathogenesis and Maraviroc resistance. Virus Evol 2019. [PMCID: PMC6735901 DOI: 10.1093/ve/vez002.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
The V3 loop of the HIV-1 envelope (env) gene is involved in binding to the chemokine receptors CCR5 and CXCR4, thus determining viral tropism. With the aim of genetically characterizing the C2V3 env region of HIV-1 samples from Cuban patients, naive to Maraviroc (MVC) therapy, 115 plasma samples were taken in the period of 2014–6 and analyzed by sequencing of the C2V3 region. HIV-1 subtyping was performed using COMET V.2 and Rega subtyping toolV.3 software. Subtypes were confirmed by phylogenetic analyses using Mega-6. Prediction of co-receptor tropism was performed using the geno2pheno algorithm. The viral mutations associated to MVC resistance were analyzed, as well as the association of the subtype with clinical, epidemiological, virological, and immunological variables. The subtypes detected using the C2V3 region were CRF20, 23, 24_BG (35 patients, 30.4%); Subtype B (33 patients, 28.7%); CRF19_cpx (30 patients, 26.1%); CRF18_cpx (10 patients, 8.7%); and others (7 patients, 6.1%). Overall, 60 per cent of the viruses exhibited R5 phenotype, 14.8 per cent were R5X4 and 25.2 per cent were X4. Interestingly, CRF19_cpx virus was associated with having phenotype X4 [46.7%, P = 0.0047, odds ratio (OR): 3.96, 95% confidence interval (95% CI): 1.59–9.84], with infection in young individuals (39.1%, P = 0.025, OR: 3,548; 95% CI: 1,136–11,077) and with higher values of viral load (P ≤ 0.05). The comparison of the amino acid sequences of the V3 loop showed differences between the B and non-B subtypes (P = 0.0001). Mutations reported to be associated with MVC resistance, were detected in 75.7 per cent of the samples, in positions 11 (6.1%), 13 (49.6%), 25 (6.1%), 316 (7.0%), 323 (11.3%), and 319 (3.5%) of Gp120, particularly in the recombinant forms CRF19_cpx and CRF_BGs. HIV variants that use the CXCR4 co-receptor were associated with more than 10 years of diagnosis, with older individuals, in the AIDS stage, with low CD4 counts and higher viral load levels (P < 0.05). The results support the hypothesis previously stated that CRF19_cpx viruses could be more pathogenic and would have limitations for the use of MVC. The high rate of mutations associated to MVC among non-B Cuban subtypes should be further studied.
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Affiliation(s)
- M Méndez
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - V Kourí
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - L Pérez
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - Y Alemán
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - Y Martínez
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - D Díaz
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - R Han
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - Y Pintos
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - Y Soto
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - Y Baños
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - Y Caturla
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - C Fonseca
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
| | - J Pérez
- Institute of Tropical Medicine Pedro Kourí (IPK), Havana, Cuba
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García E, Alpízar A, Fajardo R, Córdova D, Pérez L, Martínez S. Epidemiology of tumors in dogs in the capital of the state of Mexico from 2002-2016. ARQ BRAS MED VET ZOO 2019. [DOI: 10.1590/1678-4162-10534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT A retrospective and cross-sectional study of canine tumors was performed in the capital of State of Mexico from 2002-2016. Since then, 393 tumors were remitted. Descriptive epidemiology was made from all data: breed, age, sex, and tumor features. Then the risk association between cutaneous and non-cutaneous tumors with variables such as sex, breed, and age were analyzed through an exact Fisher test and Odds ratio. In addition, some characteristics of the canine population were studied under a survey. Of all tumors, skin tumors were the most frequent (59.0%). The group of tumors related to ultraviolet radiation was the most common (15.1%). The frequency of tumors in females was 53%, nevertheless, males had more risk to develop cutaneous tumors (OR=1.88, 1.24-2.84) (0.003). The Pure breeds were the most common (82.5%) and the most frequent age range was > 7 years (54.7%). The survey showed that males (53%) and the age range 1-7 years (62.1%) were the most frequent. Conclusions, age, breed, and sex were identified as the major risk factors for tumorigenesis. Likewise, skin tumors were associated with exposure to ultraviolet radiation, probably to the height of the locality (2667mamls).
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Affiliation(s)
- E. García
- Universidad Autónoma del Estado de México, Mexico
| | - A. Alpízar
- Universidad Autónoma del Estado de México, Mexico
| | - R. Fajardo
- Universidad Autónoma del Estado de México, Mexico
| | - D. Córdova
- Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias˗, Mexico
| | - L. Pérez
- Universidad Autónoma del Estado de México, Mexico
| | - S. Martínez
- Universidad Autónoma del Estado de México, Mexico
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Pérez L, Soto E, Farré G, Juanos J, Villorbina G, Bassie L, Medina V, Serrato AJ, Sahrawy M, Rojas JA, Romagosa I, Muñoz P, Zhu C, Christou P. CRISPR/Cas9 mutations in the rice Waxy/GBSSI gene induce allele-specific and zygosity-dependent feedback effects on endosperm starch biosynthesis. Plant Cell Rep 2019; 38:417-433. [PMID: 30715580 DOI: 10.1007/s00299-019-02388-z] [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] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 01/25/2019] [Indexed: 05/07/2023]
Abstract
Induced mutations in the waxy locus in rice endosperm did not abolish GBSS activity completely. Compensatory mechanisms in endosperm and leaves caused a major reprogramming of the starch biosynthetic machinery. The mutation of genes in the starch biosynthesis pathway has a profound effect on starch quality and quantity and is an important target for plant breeders. Mutations in endosperm starch biosynthetic genes may impact starch metabolism in vegetative tissues such as leaves in unexpected ways due to the complex feedback mechanisms regulating the pathway. Surprisingly this aspect of global starch metabolism has received little attention. We used CRISPR/Cas9 to introduce mutations affecting the Waxy (Wx) locus encoding granule-bound starch synthase I (GBSSI) in rice endosperm. Our specific objective was to develop a mechanistic understanding of how the endogenous starch biosynthetic machinery might be affected at the transcriptional level following the targeted knock out of GBSSI in the endosperm. We found that the mutations reduced but did not abolish GBSS activity in seeds due to partial compensation caused by the upregulation of GBSSII. The GBSS activity in the mutants was 61-71% of wild-type levels, similarly to two irradiation mutants, but the amylose content declined to 8-12% in heterozygous seeds and to as low as 5% in homozygous seeds, accompanied by abnormal cellular organization in the aleurone layer and amorphous starch grain structures. Expression of many other starch biosynthetic genes was modulated in seeds and leaves. This modulation of gene expression resulted in changes in AGPase and sucrose synthase activity that explained the corresponding levels of starch and soluble sugars.
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Affiliation(s)
- Lucía Pérez
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Erika Soto
- Department of Chemistry, University of Lleida-Agrotecnio Center, Lleida, Spain
| | - Gemma Farré
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Julia Juanos
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Gemma Villorbina
- Department of Chemistry, University of Lleida-Agrotecnio Center, Lleida, Spain
| | - Ludovic Bassie
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Vicente Medina
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Antonio Jesús Serrato
- Department of Biochemistry, Molecular and Cellular Plant Biology, Experimental Station of the Zaidín, Superior Council of Scientific Investigations (CSIC), Granada, Spain
| | - Mariam Sahrawy
- Department of Biochemistry, Molecular and Cellular Plant Biology, Experimental Station of the Zaidín, Superior Council of Scientific Investigations (CSIC), Granada, Spain
| | - Jose Antonio Rojas
- Department of Biochemistry, Molecular and Cellular Plant Biology, Experimental Station of the Zaidín, Superior Council of Scientific Investigations (CSIC), Granada, Spain
| | - Ignacio Romagosa
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Pilar Muñoz
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Changfu Zhu
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Paul Christou
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain.
- Catalan Institute for Research and Advanced Studies (ICREA), Barcelona, Spain.
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Gallego V, Herranz-Jusdado JG, Rozenfeld C, Pérez L, Asturiano JF. Subjective and objective assessment of fish sperm motility: when the technique and technicians matter. Fish Physiol Biochem 2018; 44:1457-1467. [PMID: 29713849 DOI: 10.1007/s10695-018-0505-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 01/15/2018] [Accepted: 04/17/2018] [Indexed: 06/08/2023]
Abstract
Fish sperm motility is nowadays considered the best sperm quality biomarker in fish, and can be evaluated both by subjective and computerized methods. With the aim to compare the precision and accuracy of both techniques, fish sperm samples were assessed by subjective methods and by a computer-assisted sperm analysis (CASA-Mot) system, and simultaneously by three different technicians with different degrees of expertise on the sperm quality analysis. Statistical dispersion parameters (CV, coefficient of variation; and RG, range) were estimated in order to determine the precision and accuracy of the techniques and the influence of laboratory staff on sperm motion assessments. Concerning precision, there were not much significant differences between the technical support staff (high, medium, and low experimented technician), and statistical dispersion parameters were quite similar between them independent of the technique used and the sperm motility class analyzed. However, concerning accuracy, experimented technician reported subjective motility values very closed to the values provided by the CASA-Mot system, only 10 percentage points away from the data provided by a CASA-Mot system. However, medium and low experimented technicians often overestimate the CASA-Mot values, and amplitudes up to 30 percentage points were detected in several sperm assessments. To sum up, both the technique (subjective or objective) and the technician (degree of expertise) became key factors in order to reach accurate motility estimations, so the use of both qualified staff and novel CASA-Mot systems seems to be a critical requirement for obtaining satisfying results in fish species with similar motility patterns.
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Affiliation(s)
- V Gallego
- Grupo de Acuicultura y Biodiversidad. Instituto de Ciencia y Tecnología Animal. Edificio 7G, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - J G Herranz-Jusdado
- Grupo de Acuicultura y Biodiversidad. Instituto de Ciencia y Tecnología Animal. Edificio 7G, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - C Rozenfeld
- Grupo de Acuicultura y Biodiversidad. Instituto de Ciencia y Tecnología Animal. Edificio 7G, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - L Pérez
- Grupo de Acuicultura y Biodiversidad. Instituto de Ciencia y Tecnología Animal. Edificio 7G, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - Juan F Asturiano
- Grupo de Acuicultura y Biodiversidad. Instituto de Ciencia y Tecnología Animal. Edificio 7G, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain.
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Lama R, Pereiro P, Costa MM, Encinar JA, Medina-Gali RM, Pérez L, Lamas J, Leiro J, Figueras A, Novoa B. Turbot (Scophthalmus maximus) Nk-lysin induces protection against the pathogenic parasite Philasterides dicentrarchi via membrane disruption. Fish Shellfish Immunol 2018; 82:190-199. [PMID: 30086378 DOI: 10.1016/j.fsi.2018.08.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 05/11/2018] [Revised: 07/23/2018] [Accepted: 08/03/2018] [Indexed: 06/08/2023]
Abstract
P. dicentrarchi is one of the most threatening pathogens for turbot aquaculture. This protozoan ciliate is a causative agent of scuticociliatosis, which is a disease with important economic consequences for the sector. Neither vaccines nor therapeutic treatments are commercially available to combat this infection. Numerous antimicrobial peptides (AMPs) have demonstrated broad-spectrum activity against bacteria, viruses, fungi, parasites and even tumor cells; an example is Nk-lysin (Nkl), which is an AMP belonging to the saposin-like protein (SAPLIP) family with an ability to interact with biological membranes. Following the recent characterization of turbot Nkl, an expression plasmid encoding Nkl was constructed and an anti-Nkl polyclonal antibody was successfully tested. Using these tools, we demonstrated that although infection did not clearly affect nkl mRNA expression, it induced changes at the protein level. Turbot Nkl had the ability to inhibit proliferation of the P. dicentrarchi parasite both in vivo and in vitro. Moreover, a shortened peptide containing the active core of turbot Nkl (Nkl71-100) was synthesized and showed high antiparasitic activity with a direct effect on parasite viability that probably occurred via membrane disruption. Therefore, the nkl gene may be a good candidate for genetic breeding selection of fish, and either the encoded peptide or its shortened analog is a promising antiparasitic treatment in aquaculture.
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Affiliation(s)
- R Lama
- Instituto de Investigaciones Marinas (IIM), Consejo Superior de Investigaciones Científicas (CSIC), Vigo, Spain
| | - P Pereiro
- Instituto de Investigaciones Marinas (IIM), Consejo Superior de Investigaciones Científicas (CSIC), Vigo, Spain
| | - M M Costa
- Instituto de Investigaciones Marinas (IIM), Consejo Superior de Investigaciones Científicas (CSIC), Vigo, Spain
| | - J A Encinar
- Instituto de Biología Molecular y Celular (IBMC), Universidad Miguel Hernández, Elche, Spain
| | - R M Medina-Gali
- Instituto de Biología Molecular y Celular (IBMC), Universidad Miguel Hernández, Elche, Spain
| | - L Pérez
- Instituto de Biología Molecular y Celular (IBMC), Universidad Miguel Hernández, Elche, Spain
| | - J Lamas
- Departamento de Biología Funcional e Instituto de Acuicultura, Universidad de Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - J Leiro
- Departamento de Microbiología y Parasitología, Instituto de Investigación y Análisis Alimentarios, Universidad de Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - A Figueras
- Instituto de Investigaciones Marinas (IIM), Consejo Superior de Investigaciones Científicas (CSIC), Vigo, Spain
| | - B Novoa
- Instituto de Investigaciones Marinas (IIM), Consejo Superior de Investigaciones Científicas (CSIC), Vigo, Spain.
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Pérez L, Luis S, Gual N, Diaz F, Sitjá M, Enfedaque B, Inzitari M. Frailty and Sarcopenia. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- L Pérez
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stockholm, Sweden
| | - S Luis
- Parc Sanitari Pere Virgili
| | - N Gual
- Parc Sanitari Pere Virgili
| | - F Diaz
- Director de centro de atención primaria
| | - M Sitjá
- Facultad de Ciencias de la Salud Blanquerna
| | - B Enfedaque
- Institut Catala De La Salut De Barcelona Generalitat De Catalunya
| | - M Inzitari
- Parc Sanitari Pere Virgili, Barcelona, Catalonia, Spain
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Saadeh M, Babak H, Vetrano D, Pérez L, Fratiglioni L, Calderon-Larrañaga A. ASSOCIATION BETWEEN BIOMARKERS OF HOMOCYSTEINE METABOLISM AND TRAJECTORIES OF CARDIOVASCULAR MULTIMORBIDITY. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Saadeh
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stockholm, Sweden
| | - H Babak
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stockholm, Sweden
| | - D Vetrano
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stokcholm, Sweden
| | - L Pérez
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stockholm, Sweden
| | - L Fratiglioni
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stokcholm, Sweden
| | - A Calderon-Larrañaga
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stokcholm, Sweden
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Pérez L, Babak H, Mangialasche F, Inzitari M, Fratiglioni L, Rizzuto D, Calderon-Larrañaga A. GLUTATHIONE AND MULTIMORBIDITY DEVELOPMENT IN OLDER ADULTS: A LONGITUDINAL POPULATION-BASED STUDY. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- L Pérez
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stockholm, Sweden
| | - H Babak
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stockholm, Sweden
| | - F Mangialasche
- Aging Research Center, NVS Department, Karolinska Institutet, Stockholm University, Sweden
| | | | - L Fratiglioni
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stokcholm, Sweden
| | - D Rizzuto
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stokcholm, Sweden
| | - A Calderon-Larrañaga
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stokcholm, Sweden
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24
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Lelli D, Pérez L, Calle A, Onder G, Morandi A, Ortolani E, Pedone C, Inzitari M. IS VITAMIN D ASSOCIATED TO FUNCTIONAL OUTCOMES IN OLDER ADULTS ADMITTED TO REHABILITATION UNITS? Innov Aging 2018. [DOI: 10.1093/geroni/igy023.3028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- D Lelli
- UOC di Geriatria, Università Campus Bio-Medico di Roma, Rome, Lazio, Italy
| | - L Pérez
- Aging Research Center, NVS Department, Karolinska Institutet & Stockholm University, Stockholm, Sweden
| | - A Calle
- Parc Sanitari Pere Virgili, Barcelona, Catalonia, Spain
| | - G Onder
- Centro Medicina dell’Invecchiamento, Università Cattolica del Sacro Cuore, Rome, Lazio, Italy
| | - A Morandi
- Department of Rehabilitation and Aged Care of the Fondazione Camplani, Ancelle Hospital, Cremona, Lombardia, Italy
| | - E Ortolani
- Centro Medicina dell’Invecchiamento, Università Cattolica del Sacro Cuore, Rome, Lazio, Italy
| | - C Pedone
- UOC di Geriatria, Università Campus Bio-Medico di Roma, Rome, Lazio, Italy
| | - M Inzitari
- Parc Sanitari Pere Virgili, Barcelona, Catalonia, Spain
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Soto E, Pérez L, Villorbina G, Farré G, Christou P. CRISPR/Cas9-induced monoallelic mutations in the cytosolic AGPase large subunit gene APL2 induce the ectopic expression of APL2 and the corresponding small subunit gene APS2b in rice leaves. N Biotechnol 2018. [DOI: 10.1016/j.nbt.2018.05.1269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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26
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Pérez L, Saiz López P, Sánchez-Escribano R, Rodrigo A, García González M, Durán M, Infante M, Terradez A, Faull I, Lastra E. Application of liquid biopsies in metastatic gastrointestinal cancer to identify candidate therapeutic targets. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Pérez L, Soto E, Villorbina G, Bassie L, Medina V, Muñoz P, Capell T, Zhu C, Christou P, Farré G. CRISPR/Cas9-induced monoallelic mutations in the cytosolic AGPase large subunit gene APL2 induce the ectopic expression of APL2 and the corresponding small subunit gene APS2b in rice leaves. Transgenic Res 2018; 27:423-439. [PMID: 30099722 DOI: 10.1007/s11248-018-0089-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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: 04/12/2018] [Accepted: 08/04/2018] [Indexed: 01/01/2023]
Abstract
The first committed step in the endosperm starch biosynthetic pathway is catalyzed by the cytosolic glucose-1-phosphate adenylyl transferase (AGPase) comprising large and small subunits encoded by the OsAPL2 and OsAPS2b genes, respectively. OsAPL2 is expressed solely in the endosperm so we hypothesized that mutating this gene would block starch biosynthesis in the endosperm without affecting the leaves. We used CRISPR/Cas9 to create two heterozygous mutants, one with a severely truncated and nonfunctional AGPase and the other with a C-terminal structural modification causing a partial loss of activity. Unexpectedly, we observed starch depletion in the leaves of both mutants and a corresponding increase in the level of soluble sugars. This reflected the unanticipated expression of both OsAPL2 and OsAPS2b in the leaves, generating a complete ectopic AGPase in the leaf cytosol, and a corresponding decrease in the expression of the plastidial small subunit OsAPS2a that was only partially complemented by an increase in the expression of OsAPS1. The new cytosolic AGPase was not sufficient to compensate for the loss of plastidial AGPase, most likely because there is no wider starch biosynthesis pathway in the leaf cytosol and because pathway intermediates are not shuttled between the two compartments.
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Affiliation(s)
- Lucía Pérez
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Erika Soto
- Department of Chemistry, University of Lleida-Agrotecnio Center, Lleida, Spain
| | - Gemma Villorbina
- Department of Chemistry, University of Lleida-Agrotecnio Center, Lleida, Spain
| | - Ludovic Bassie
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Vicente Medina
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Pilar Muñoz
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Teresa Capell
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Changfu Zhu
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Paul Christou
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain. .,Catalan Institute for Research and Advanced Studies (ICREA), Barcelona, Spain.
| | - Gemma Farré
- Department of Plant Production and Forestry Science, School of Agrifood and Forestry Science and Engineering (ETSEA), University of Lleida-Agrotecnio Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain.
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Pérez L, Cantalapiedra D, Valero-Hervas D, Duran I, Calvete O, Wang CK, Martinez-Laperche C, Gonzalez-Neira A, Felipe-Ponce V, Lois Olmo S, Garcia J, Collado Mico C, Fernandez Pedrosa V, Miñambres R, Buño Borde I, Santillan S, Urman A, Suarez Saiz FJ, Moya CM. The application of cognitive computing technology in genomics in precision oncological medicine: The Sistemas Genomicos Experience. J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.15_suppl.e18544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | | | | | - Ignacio Duran
- Hospital Universitario Marques de Valdecilla, Seville, Spain
| | - Oriol Calvete
- Human Genetics Group, Spanish National Cancer Research Center (CNIO), Madrid, Spain
| | | | | | | | | | - Sergio Lois Olmo
- Bioinformatics Department, Sistemas Genómicos Ltd., Paterna, Spain
| | - Jaime Garcia
- Bioinformatics Department, Sistemas Genómicos Ltd., Paterna, Spain
| | - Carmen Collado Mico
- Next-Generation Sequencing Laboratory, Sistemas Genómicos Ltd., Paterna, Spain
| | | | | | | | - Sonia Santillan
- Medical Genetics Unit , Sistemas Genómicos Ltd., Paterna, Spain
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Castro P, Huerga C, Chamorro P, Garayoa J, Roch M, Pérez L. Characterization and simulation of noise in PET images reconstructed with OSEM: Development of a method for the generation of synthetic images. Rev Esp Med Nucl Imagen Mol 2018; 37:229-236. [PMID: 29678630 DOI: 10.1016/j.remn.2017.10.007] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/28/2017] [Accepted: 10/25/2017] [Indexed: 11/27/2022]
Abstract
INTRODUCTION The goals of the study are to characterize imaging properties in 2D PET images reconstructed with the iterative algorithm ordered-subset expectation maximization (OSEM) and to propose a new method for the generation of synthetic images. MATERIAL AND METHODS The noise is analyzed in terms of its magnitude, spatial correlation, and spectral distribution through standard deviation, autocorrelation function, and noise power spectrum (NPS), respectively. Their variations with position and activity level are also analyzed. This noise analysis is based on phantom images acquired from 18F uniform distributions. Experimental recovery coefficients of hot spheres in different backgrounds are employed to study the spatial resolution of the system through point spread function (PSF). The NPS and PSF functions provide the baseline for the proposed simulation method: convolution with PSF as kernel and noise addition from NPS. RESULTS The noise spectral analysis shows that the main contribution is of random nature. It is also proven that attenuation correction does not alter noise texture but it modifies its magnitude. Finally, synthetic images of 2 phantoms, one of them an anatomical brain, are quantitatively compared with experimental images showing a good agreement in terms of pixel values and pixel correlations. Thus, the contrast to noise ratio for the biggest sphere in the NEMA IEC phantom is 10.7 for the synthetic image and 8.8 for the experimental image. CONCLUSIONS The properties of the analyzed OSEM-PET images can be described by NPS and PSF functions. Synthetic images, even anatomical ones, are successfully generated by the proposed method based on the NPS and PSF.
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Affiliation(s)
- P Castro
- Servicio de Radiofísica, Hospital Universitario de La Princesa, Madrid, España.
| | - C Huerga
- Servicio de Radiofísica y Protección Radiológica, Hospital Universitario La Paz, Madrid, España
| | - P Chamorro
- Servicio de Radiofísica, Hospital Universitario de La Princesa, Madrid, España
| | - J Garayoa
- Servicio de Protección Radiológica, Hospital Universitario Fundación Jiménez Díaz, Madrid, España
| | - M Roch
- Servicio de Radiofísica, Hospital Universitario de La Princesa, Madrid, España
| | - L Pérez
- Servicio de Radiofísica, Hospital Universitario de La Princesa, Madrid, España
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Castro P, Roch M, Hernández D, Pérez L. EP-1718: Comparative analysis of gamma results obtained using three VMAT treatment verification systems. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32027-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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31
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Molinero-Abad B, Izquierdo D, Pérez L, Escudero I, Arcos-Martínez MJ. Comparison of backing materials of screen printed electrochemical sensors for direct determination of the sub-nanomolar concentration of lead in seawater. Talanta 2018; 182:549-557. [PMID: 29501191 DOI: 10.1016/j.talanta.2018.02.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [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: 10/11/2017] [Revised: 01/30/2018] [Accepted: 02/02/2018] [Indexed: 11/18/2022]
Abstract
An anodic stripping voltammetric method is reported in this study for the determination of sub-nanomolar Pb concentration using disposable sensors, each consisting of three (counter, working and reference) screen-printed electrodes. Sensor performance was optimized for the determination of Pb through several surface modifications, by using single-walled carbon nanotubes, electro-reduced graphene oxide and gold nanoparticles. A scanning electron microscopy study of the deposition of electrogenerated gold nanoparticles of various sizes on the working electrode surface showed that spherical nanoparticles of around 100 nm provided the best results. The modification of working electrodes with graphene and gold nanoparticles permitted the determination of Pb2+ in seawater (Detection Limit: 3.21·10-10 M) without modifying the pH of the sample. The electrode systems were printed on both rigid and textile backing materials, to observe the influence of those materials on the final performance of the sensor.
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Affiliation(s)
- B Molinero-Abad
- Department of Chemistry, Faculty of Science, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - D Izquierdo
- Department of Chemistry, Faculty of Science, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - L Pérez
- Department of Chemistry, Faculty of Science, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain; Department of Biotechnology, Faculty of Science, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - I Escudero
- Department of Biotechnology, Faculty of Science, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - M J Arcos-Martínez
- Department of Chemistry, Faculty of Science, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
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Canturri A, Cuvertoret M, Pérez L, Ganges L, Jeffers A, McMenamy M, Cosby L, Domingo M. Cetacean Morbillivirus Infection and Central Nervous System Aspergillosis in Absence of Histopathologic Morbilliviral Lesions and Immunohistochemical CeMV-labelling in the Mediterranean Striped Dolphin ( Stenella coeruleoalba ). J Comp Pathol 2018. [DOI: 10.1016/j.jcpa.2017.10.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Tort LFL, Iglesias K, Bueno C, Lizasoain A, Salvo M, Cristina J, Kandratavicius N, Pérez L, Figueira R, Bícego MC, Taniguchi S, Venturini N, Brugnoli E, Colina R, Victoria M. Wastewater contamination in Antarctic melt-water streams evidenced by virological and organic molecular markers. Sci Total Environ 2017; 609:225-231. [PMID: 28743008 DOI: 10.1016/j.scitotenv.2017.07.127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/13/2017] [Accepted: 07/14/2017] [Indexed: 06/07/2023]
Abstract
Human activities in the Antarctica including tourism and scientific research have been raised substantially in the last century with the concomitant impact on the Antarctic ecosystems through the release of wastewater mainly from different scientific stations activities. The aim of this study was to assess the wastewater contamination of surface waters and sediments of three melt-water streams (11 sites) by leaking septic tanks located in the vicinity of the Uruguayan Scientific Station in the Fildes Peninsula, King George Island, Antarctica, during summer 2015. For this purpose, we combined the analysis of fecal steroids in sediments by using gas chromatography and six enteric viruses in surface waters by quantitative and qualitative PCR. Coprostanol concentrations (from 0.03 to 3.31μgg-1) and fecal steroids diagnostic ratios indicated that stations C7 and C8 located in the kitchen stream presented sewage contamination. Rotavirus was the only enteric virus detected in five sites with concentration ranging from 1.2×105gcL-1 to 5.1×105gcL-1 being three of them located downstream from the leaking AINA and Kitchen septic tanks. This study shows for the first time the presence of both virological and molecular biomarkers of wastewater pollution in surface waters and sediments of three melt-water streams in the vicinity of a scientific station in the Antarctica. These results highlight the importance of the complementation of these biomarkers in two different matrices (surface waters and sediments) to assess wastewater pollution in an Antarctic environment related to anthropogenic activities in the area.
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Affiliation(s)
- L F L Tort
- Laboratorio de Virología Molecular, Sede Salto del CENUR Litoral Norte, Universidad de la República, Rivera 1350, Salto 50000, Uruguay
| | - K Iglesias
- Laboratorio de Biogeoquímica Marina, IECA, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay
| | - C Bueno
- Oceanografía y Ecología Marina, IECA, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay
| | - A Lizasoain
- Laboratorio de Virología Molecular, Sede Salto del CENUR Litoral Norte, Universidad de la República, Rivera 1350, Salto 50000, Uruguay
| | - M Salvo
- Laboratorio de Virología Molecular, Sede Salto del CENUR Litoral Norte, Universidad de la República, Rivera 1350, Salto 50000, Uruguay
| | - J Cristina
- Laboratorio de Virología Molecular, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Mataojo 2055, Montevideo (11400) Uruguay
| | - N Kandratavicius
- Oceanografía y Ecología Marina, IECA, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay
| | - L Pérez
- Centro Universitario de la Regional Este, Universidad de la República, Ruta 9 y Ruta 15, Rocha, Uruguay
| | - R Figueira
- Instituto Oceanográfico da Universidade de São Paulo, Praça do Oceanográfico 191, Cidade Universitária (05508-120), São Paulo, SP, Brazil
| | - M C Bícego
- Instituto Oceanográfico da Universidade de São Paulo, Praça do Oceanográfico 191, Cidade Universitária (05508-120), São Paulo, SP, Brazil
| | - S Taniguchi
- Instituto Oceanográfico da Universidade de São Paulo, Praça do Oceanográfico 191, Cidade Universitária (05508-120), São Paulo, SP, Brazil
| | - N Venturini
- Laboratorio de Biogeoquímica Marina, IECA, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay
| | - E Brugnoli
- Oceanografía y Ecología Marina, IECA, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay
| | - R Colina
- Laboratorio de Virología Molecular, Sede Salto del CENUR Litoral Norte, Universidad de la República, Rivera 1350, Salto 50000, Uruguay
| | - M Victoria
- Laboratorio de Virología Molecular, Sede Salto del CENUR Litoral Norte, Universidad de la República, Rivera 1350, Salto 50000, Uruguay.
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Bustelo M, Pinazo A, Manresa M, Mitjans M, Vinardell M, Pérez L. Monocatenary histidine-based surfactants: Role of the alkyl chain length in antimicrobial activity and their selectivity over red blood cells. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.04.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Simal I, García-Casillas MA, Cerdà J, Pérez L, Fernández B, De la Torre M, Fanjul M, Molina E, De Agustín JC. [Pleural cavity concerns]. Cir Pediatr 2017; 30:121-125. [PMID: 29043687] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
INTRODUCTION Persistent air leak (PAL) is a common problem. We asses our experience in the management of these patients. MATERIAL AND METHODS Retrospective review of patients with chest tubes after bronchopulmonary pneumothorax (due to lung resections, spontaneous pneumothorax, necrotizing pneumonia) from 2010 to 2015. We studied clinical data, PAL incidence, risk factors and treatment, considering PAL ≥ 5 days. RESULTS Thirty-seven cases (28 patients) between 0-16years: 26 lung resections, 11 pneumothorax. We found no differences in the distribution of age, weight, indication or comorbidity, but we noticed a trend to shorter hospital stay in infants. Patients with staple-line reinforcement presented lower PAL incidence than patients with no mechanical suture (43% vs 37%), the difference is even apparent when applying tissue sealants (29% vs 50%) (p > 0.05). We encountered no relationship between the size of the tube (10-24 Fr) or the type of resection, with bigger air leaks the higher suction pressure. We performed 13 pleurodesis in 7 patients (2 lobectomies, 3 segmentectomies and 2 bronchopleural fistulas), with 70% effectiveness. We conducted 7 procedures with autologous blood (1.6 ml/kg), 2 with povidone-iodine (0.5 ml/kg), 2 mechanical thoracoscopic and 2 open ones. We repeated pleurodesis four times, 3 of them after autologous blood infusion: 2 infusions with the same dose (both effective) and the other 2 as thoracotomy in patients with bronchopleural fistulas. After instillation of blood 3 patients presented with fever. After povidone-iodine instillation, the patient suffered from fever and rash. CONCLUSIONS Intraoperative technical aspects are essential to reduce the risk of PAL. Autologous blood pleurodesis, single or repeated, is a minimal invasive option, very safe and effective to treat the parenchymatous PAL.
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Affiliation(s)
- I Simal
- Servicio de Cirugía Pediátrica. Hospital General Universitario Gregorio Marañón. Madrid
| | - M A García-Casillas
- Servicio de Cirugía Pediátrica. Hospital General Universitario Gregorio Marañón. Madrid
| | - J Cerdà
- Servicio de Cirugía Pediátrica. Hospital General Universitario Gregorio Marañón. Madrid
| | - L Pérez
- Servicio de Cirugía Pediátrica. Hospital General Universitario Gregorio Marañón. Madrid
| | - B Fernández
- Servicio de Cirugía Pediátrica. Hospital General Universitario Gregorio Marañón. Madrid
| | - M De la Torre
- Servicio de Cirugía Pediátrica. Hospital General Universitario Gregorio Marañón. Madrid
| | - M Fanjul
- Servicio de Cirugía Pediátrica. Hospital General Universitario Gregorio Marañón. Madrid
| | - E Molina
- Servicio de Cirugía Pediátrica. Hospital General Universitario Gregorio Marañón. Madrid
| | - J C De Agustín
- Servicio de Cirugía Pediátrica. Hospital General Universitario Gregorio Marañón. Madrid
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Bračič M, Fras-Zemljič L, Pérez L, Kogej K, Stana-Kleinschek K, Kargl R, Mohan T. Protein-repellent and antimicrobial nanoparticle coatings from hyaluronic acid and a lysine-derived biocompatible surfactant. J Mater Chem B 2017; 5:3888-3897. [PMID: 32264250 DOI: 10.1039/c7tb00311k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biofilm formation triggered by uncontrolled protein adsorption, on medical devices is the leading cause of catheter-associated urinary tract infections (CAUTI) during implantation. Herein, we report a water-based, green and one-step strategy to functionalize surfaces of silicone catheters, poly(dimethylsiloxane) (PDMS), with antifouling and antimicrobial substances to avoid uncontrolled protein adsorption and microbial attachment. A novel synergetic formulation consisting of an anionic glycosaminoglycan (hyaluronic acid, HA) and a lysine-derived biocompatible cationic surfactant (Nε-myristoyl-lysine methyl ester, MKM) was prepared, resulting in the formation of nanoparticles (NPs, ca. 100-250 nm). Besides their high stability and long-lasting hydrophilicity in ambient and aqueous environments for 60 days, the nanometric layers (48 ± 3 nm) of HA-MKM NPs on PDMS showed no adsorption of BSA and lysozyme and substantially lower adsorption of fibrinogen as revealed by a quartz crystal microbalance with dissipation (QCM-D). In vitro antimicrobial test with S. aureus, E. coli, P. aeruginosa, P. mirabilis, C. albicans microbes under dynamic conditions revealed that the microbial growth was hampered by 85% compared with unmodified PDMS. Given the multiple functionalities, charges and diverse physiochemical properties of polysaccharide-lysine-based surfactant mixtures, this approach can be easily extended to the development of novel coatings on other silicone-based materials, thereby broadening potential applicability of PDMS-based biomaterials/devices in microfluidics, diagnostic biosensors and others.
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Affiliation(s)
- M Bračič
- Laboratory for Characterization and Processing of Polymers, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia
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Ribera E, Martínez L, Pujol L, Angelats M, Ezquiaga I, Grifell M, Palma Á, Belmonte E, Pérez L, Pérez-Solá V, Salgado P. Is there a relationship between morbid obesity and depression? Eur Psychiatry 2017. [DOI: 10.1016/j.eurpsy.2017.02.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
IntroductionA considerable proportion of patients with morbid obesity require treatment with antidepressants.ObjectivesThe aim of this study is to determine the incidence of patients who are in antidepressant treatment and identify risk factors for the need of this treatment in patients with morbid obesity.Materials and methodsRetrospective cohort study of 292 patients with morbid obesity who underwent bariatric surgery at Hospital del Mar from January 2010 to November 2015. The incidence of antidepressant treatment was analyzed, and also its possible relationship with the following variables: age, sex, BMI, tobacco smoking, alcohol consumption and age of onset of obesity. Chi2 test for categorical variables and Student t-test for quantitative variables were applied. Afterwards, a multivariate analysis was performed using logistic regression.ResultsThe mean age is 43.1 years. Most of the patients (76.4%) are women. Seventy-seven patients (26.4%) are receiving treatment with antidepressants. There is a statistically significant relationship between age and the need of treatment with antidepressants (P < 0.001). This relationship is still present when the variables are analyzed using logistic regression (P < 0.005, OR 1.049). We have not found any significant relationship with the rest of the variables.ConclusionsDespite the large number of patients in the study, there are limitations, such as being a retrospective study and not being adjusted for confounding factors. From all the variables that have been analyzed we have found that as the age of the patients increase, there is a higher number of patients that receive treatment with antidepressants.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Mazzeo I, Giorgini E, Gioacchini G, Maradonna F, Vílchez MC, Baloche S, Dufour S, Pérez L, Carnevali O, Asturiano JF. A comparison of techniques for studying oogenesis in the European eel Anguilla anguilla. J Fish Biol 2016; 89:2055-2069. [PMID: 27500665 DOI: 10.1111/jfb.13103] [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: 12/04/2014] [Accepted: 07/04/2016] [Indexed: 06/06/2023]
Abstract
A multi-technique approach was used to study the changes occurring in European eel Anguilla anguilla ovaries during hormonally-induced vitellogenesis. Aside from classic techniques used to monitor the vitellogenic process, such as ovary histology, fat content analysis, sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) and vitellogenin enzyme linked immunosorbent assay (ELISA), a new technique, Fourier-transform infrared (FT-IR) microspectroscopy, was used to analyse A. anguilla ovaries. The results from the different techniques provided different ways of approaching the same process. Although it is considered a time consuming approach, of all the employed techniques, histology provided the most direct evidences about vitellogenesis. SDS-PAGE and ELISA were also useful for studying vitellogenesis, whereas fat analysis cannot be used for this purpose. The FT-IR analysis provided a representative IR spectrum for each ovarian stage (previtellogenic stage, early vitellogenic stage, mid-vitellogenic stage and late vitellogenic stage), demonstrating that it is a valid method able to illustrate the distribution of the oocytes within the ovary slices. The chemical maps obtained confirmed changes in lipid concentrations and revealed their distribution within the oocytes at different maturational stages. When the results and the accuracy of the FT-IR analysis were compared with those of the traditional techniques commonly used to establish the vitellogenic stage, it became evident that FT-IR is a useful and reliable tool, with many advantages, including the fact that it requires little biological material, the costs involved are low, analysis times are short and last but not least, the fact that it offers the possibility of simultaneously analysing various biocomponents of the same oocyte.
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Affiliation(s)
- I Mazzeo
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, 46022, Valencia, Spain
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, via Brecce Bianche, 60131, Ancona, Italy
| | - E Giorgini
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, via Brecce Bianche, 60131, Ancona, Italy
| | - G Gioacchini
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, via Brecce Bianche, 60131, Ancona, Italy
| | - F Maradonna
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, via Brecce Bianche, 60131, Ancona, Italy
| | - M C Vílchez
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, 46022, Valencia, Spain
| | - S Baloche
- Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR CNRS 7208, IRD 207, UPMC, Muséum d'Histoire Naturelle, Paris, France
| | - S Dufour
- Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR CNRS 7208, IRD 207, UPMC, Muséum d'Histoire Naturelle, Paris, France
| | - L Pérez
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, 46022, Valencia, Spain
| | - O Carnevali
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, via Brecce Bianche, 60131, Ancona, Italy
| | - J F Asturiano
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, 46022, Valencia, Spain.
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Correa C, Kourí V, Pérez L, Soto Y, Limia C. Diagnosis, gB genotype distribution and viral load of symptomatic congenitally infected CMV patients in Cuba. J Perinatol 2016; 36:837-42. [PMID: 27309627 DOI: 10.1038/jp.2016.95] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 04/08/2016] [Accepted: 05/11/2016] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Cytomegalovirus (CMV) is the leading cause of viral congenital infection. Some viral factors have been proposed to be CMV pathogenicity markers. The objective of this study was to investigate the frequency of congenital CMV infection in symptomatic patients and the possible association with the CMV glycoprotein B (gB) genotype and viral load. STUDY DESIGN A total of 361 newborns (NB) and 158 pregnant women (PW) with clinically suspected CMV infection were enrolled. Studied samples included urine, saliva, serum, vaginal swabs and amniotic fluid. CMV infection was diagnosed by multiplex nested PCR. CMV gB genotyping was performed on infected samples, followed by viral load determination. RESULTS Overall, 18.7% of the tested patients were positive for CMV infection, 19.7% of NB were congenitally infected and 16.5% of PW showed active CMV infection. gB-2 was the most prevalent genotype detected (39/97 patients). gB CMV mixed infections were detected in 12 patients. gB-2 was associated with mono-infections (P<0.01). Mixed infections showed higher levels of viral load compared with gB mono-infection (P=0.03). Hepatomegaly, splenomegaly, jaundice, sepsis-like syndrome and malformations were the most prevalent clinical findings. gB-4 was more frequently associated with sepsis-like syndrome than other gB genotypes (P=0.04, odds ratio=4.3, confidence interval: 0.9 to 21.6). The difference in medians of CMV load was statistically significant among patients presenting different clinical signs (P=0.04). CONCLUSIONS This study showed that CMV is a frequent cause of congenital infection in symptomatic Cuban patients. Despite gB2 being the most frequently detected, gB-4 was the only genotype associated with clinical features (sepsis-like syndrome in NB). No other associations among specific genotypes and clinical characteristics were found. Further studies are needed to clarify the role that viral load and genotype play in the outcome of congenital infection.
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Affiliation(s)
- C Correa
- Sexually Transmitted Diseases Laboratory, Virology Department, Institute of Tropical Medicine 'Pedro Kourí', Havana, Cuba
| | - V Kourí
- Sexually Transmitted Diseases Laboratory, Virology Department, Institute of Tropical Medicine 'Pedro Kourí', Havana, Cuba
| | - L Pérez
- Sexually Transmitted Diseases Laboratory, Virology Department, Institute of Tropical Medicine 'Pedro Kourí', Havana, Cuba
| | - Y Soto
- Sexually Transmitted Diseases Laboratory, Virology Department, Institute of Tropical Medicine 'Pedro Kourí', Havana, Cuba
| | - C Limia
- Sexually Transmitted Diseases Laboratory, Virology Department, Institute of Tropical Medicine 'Pedro Kourí', Havana, Cuba
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Quesada A, Sánchez M, Pérez L, Usategui R, Manzano G, Hidalgo C, Martinez O, del Pino J, Montilla C. FRI0440 Progression of Radiographic Axial Damage in Patients with Psoriatic Arthritis. Relation with Clinical and Analytical Factors. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Asturiano JF, Sørensen SR, Pérez L, Lauesen P, Tomkiewicz J. First Production of Larvae Using Cryopreserved Sperm: Effects of Preservation Temperature and Cryopreservation on European Eel Sperm Fertilization Capacity. Reprod Domest Anim 2016; 51:485-91. [PMID: 27189043 DOI: 10.1111/rda.12706] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Accepted: 04/12/2016] [Indexed: 10/21/2022]
Abstract
Sperm cryopreservation is a useful tool in captive fish reproduction management, that is to synchronize gamete production, especially in the case of species as the European eel, where the time of female spawning readiness is unpredictable. Several protocols to cryopreserve sperm of this species have been described, but until recently fertilization trials were not feasible. This study evaluated the effect of cold storage of diluted sperm prior to fertilizations and tested whether a previously defined protocol for European eel sperm cryopreservation can be successfully applied in fertilization trials to produce viable offspring. In our experiment, the sperm motility was evaluated after the extraction and the best samples were selected and pooled. Until stripping of eggs and fertilization, diluted sperm samples were maintained at either 4 or 20°C, or cryopreserved, following existing protocols. Fertilization of two egg batches was attempted. Diluted sperm caused a similar percentage of fertilized eggs and a similar number of embryos and larvae, independently of storage temperature (4 or 20°C). The cryopreserved sperm resulted in a lower percentage of fertilized eggs, but embryos developed and a few larvae ('cryolarvae') were obtained 55 h after fertilization in one of the two egg batches. This result evidences that the tested cryopreservation protocol is applicable for eel reproduction management, although improvements will be required to enhance fertilization success.
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Affiliation(s)
- J F Asturiano
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Valencia, Spain
| | - S R Sørensen
- Technical University of Denmark, National Institute of Aquatic Resources, Charlottenlund, Denmark
| | - L Pérez
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Valencia, Spain
| | - P Lauesen
- Billund Aquaculture Service A/S, Billund, Denmark
| | - J Tomkiewicz
- Technical University of Denmark, National Institute of Aquatic Resources, Charlottenlund, Denmark
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Díaz-Delgado J, Fernández A, Xuriach A, Sierra E, Bernaldo de Quirós Y, Mompeo B, Pérez L, Andrada M, Marigo J, Catão-Dias JL, Groch KR, Edwards JF, Arbelo M. Verminous Arteritis Due to Crassicauda sp. in Cuvier's Beaked Whales (Ziphius Cavirostris). Vet Pathol 2016; 53:1233-1240. [PMID: 27106736 DOI: 10.1177/0300985816642228] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 11/17/2022]
Abstract
The vascular system of Cuvier's beaked whales (CBW) (Ziphius cavirostris; family Ziphiidae), an extremely deep, prolonged-diving cetacean, is increasingly receiving anatomic and physiologic study due to possible anthropogenic interactions; however, vascular pathology rarely has been reported in this species. Thirteen CBW stranded in the Canary Islands from June 2008 to June 2014 were autopsied. A careful dissection of the thoracic and abdominal vasculature was performed on these animals. All had moderate to severe and extensive chronic fibrosing arteritis with aneurysms, hemorrhages, and thrombosis primarily involving the mesenteric and gastroepiploic arteries and the thoracic and abdominal aorta. Microscopically, the lesions varied from subacute subintimal hemorrhages and severe neutrophilic, eosinophilic, and histiocytic dissecting arteritis with intralesional nematode larvae to marked, chronic, fibrosing arteritis with thickening and distortion of the vascular wall with calcification and occasional cartilage metaplasia. In addition, adult nematodes in renal arteries and veins, renal parenchyma and/or ureter were identified morphologically as Crassicauda sp. Nucleic acid sequenced from renal nematodes from 2 animals yielded closest nucleotide identity to C. magna The pathogenesis is proposed to involve a host response to larval migration from the intestine to the kidney through the mesenteric arteries, abdominal aorta, and renal arteries. Severe consequences for such lesions are possible and could vary from reduced vascular compliance to chronic renal disease and predisposition to the development of disseminated intravascular coagulation and multiorgan failure. Severe chronic arteritis in CBW is associated with renal parasitism by Crassicauda spp.
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Affiliation(s)
- J Díaz-Delgado
- Veterinary Histology and Pathology, Institute of Animal Health (IUSA), University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - A Fernández
- Veterinary Histology and Pathology, Institute of Animal Health (IUSA), University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain Department of Morphology, Veterinary and Medicine School, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - A Xuriach
- Veterinary Histology and Pathology, Institute of Animal Health (IUSA), University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - E Sierra
- Veterinary Histology and Pathology, Institute of Animal Health (IUSA), University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - Y Bernaldo de Quirós
- Veterinary Histology and Pathology, Institute of Animal Health (IUSA), University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain Texas A&M University Corpus Christi, Department of Life Sciences, Corpus Christi, TX, USA
| | - B Mompeo
- Veterinary Histology and Pathology, Institute of Animal Health (IUSA), University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain Department of Morphology, Veterinary and Medicine School, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - L Pérez
- Veterinary Histology and Pathology, Institute of Animal Health (IUSA), University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain Department of Morphology, Veterinary and Medicine School, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - M Andrada
- Veterinary Histology and Pathology, Institute of Animal Health (IUSA), University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - J Marigo
- Laboratório de Patologia Comparada de Animais Selvagens, Faculdade de Medicina Veterinaria e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - J L Catão-Dias
- Laboratório de Patologia Comparada de Animais Selvagens, Faculdade de Medicina Veterinaria e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - K R Groch
- Laboratório de Patologia Comparada de Animais Selvagens, Faculdade de Medicina Veterinaria e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - J F Edwards
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - M Arbelo
- Veterinary Histology and Pathology, Institute of Animal Health (IUSA), University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain Department of Morphology, Veterinary and Medicine School, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
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de Los Ríos A, Pérez L, Echavarri-Erasun B, Serrano T, Barbero MC, Ortiz-Zarragoitia M, Orbea A, Juanes JA, Cajaraville MP. Measuring biological responses at different levels of organisation to assess the effects of diffuse contamination derived from harbour and industrial activities in estuarine areas. Mar Pollut Bull 2016; 103:301-312. [PMID: 26707886 DOI: 10.1016/j.marpolbul.2015.11.056] [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: 07/08/2015] [Revised: 11/24/2015] [Accepted: 11/30/2015] [Indexed: 06/05/2023]
Abstract
To evaluate the effects of diffuse contamination, biological measurements were applied in a scrap cargo harbour, a marina and an industrial area. Metal accumulation and biomarkers (survival in air, digestive gland and gonad histopathology, lysosomal membrane stability, intralysosomal metal accumulation, transcription of vitellogenin and MT20, peroxisome proliferation and micronuclei formation) were measured in transplanted mussels, together with metrics of benthic invertebrates. Benthic species were classified into ecological groups and univariate indexes were calculated. The marina showed high richness (16) and percentage of opportunistic species (55.1%) and low metal accumulation. Mussels in the scrap cargo harbour showed high metal accumulation, up-regulation of MT20 transcription, reduced health status (LP<6 min) and increased micronuclei frequencies (up to 11.3‰). At the industrial area, low species richness (4) and badly organised assemblages were detected and chemical analyses indicated significant amounts of bioavailable metals. Overall, selected biological measurements showed potential for the assessment of diffuse contamination.
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Affiliation(s)
- A de Los Ríos
- Laboratory of Cell Biology and Histology, Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Sarriena z/g, E-48940 Leioa, Basque Country, Spain; Environmental Hydraulics Institute "IH Cantabria", University of Cantabria, c/Isabel Torres n° 15, 39011 Santander, Spain
| | - L Pérez
- Laboratory of Cell Biology and Histology, Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Sarriena z/g, E-48940 Leioa, Basque Country, Spain
| | - B Echavarri-Erasun
- Environmental Hydraulics Institute "IH Cantabria", University of Cantabria, c/Isabel Torres n° 15, 39011 Santander, Spain
| | - T Serrano
- Laboratory of Cell Biology and Histology, Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Sarriena z/g, E-48940 Leioa, Basque Country, Spain; Research Centre for Experimental Marine Biology and Biotechnology PIE, University of the Basque Country (UPV/EHU), Areatza z/g, E-48620 Plentzia, Basque Country, Spain
| | - M C Barbero
- Laboratory of Cell Biology and Histology, Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Sarriena z/g, E-48940 Leioa, Basque Country, Spain; Research Centre for Experimental Marine Biology and Biotechnology PIE, University of the Basque Country (UPV/EHU), Areatza z/g, E-48620 Plentzia, Basque Country, Spain
| | - M Ortiz-Zarragoitia
- Laboratory of Cell Biology and Histology, Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Sarriena z/g, E-48940 Leioa, Basque Country, Spain; Research Centre for Experimental Marine Biology and Biotechnology PIE, University of the Basque Country (UPV/EHU), Areatza z/g, E-48620 Plentzia, Basque Country, Spain
| | - A Orbea
- Laboratory of Cell Biology and Histology, Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Sarriena z/g, E-48940 Leioa, Basque Country, Spain; Research Centre for Experimental Marine Biology and Biotechnology PIE, University of the Basque Country (UPV/EHU), Areatza z/g, E-48620 Plentzia, Basque Country, Spain
| | - J A Juanes
- Environmental Hydraulics Institute "IH Cantabria", University of Cantabria, c/Isabel Torres n° 15, 39011 Santander, Spain
| | - M P Cajaraville
- Laboratory of Cell Biology and Histology, Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Sarriena z/g, E-48940 Leioa, Basque Country, Spain; Research Centre for Experimental Marine Biology and Biotechnology PIE, University of the Basque Country (UPV/EHU), Areatza z/g, E-48620 Plentzia, Basque Country, Spain.
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Pinazo A, Manresa M, Marques A, Bustelo M, Espuny M, Pérez L. Amino acid–based surfactants: New antimicrobial agents. Adv Colloid Interface Sci 2016; 228:17-39. [PMID: 26792016 DOI: 10.1016/j.cis.2015.11.007] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/10/2015] [Accepted: 11/10/2015] [Indexed: 12/11/2022]
Abstract
The rapid increase of drug resistant bacteria makes necessary the development of new antimicrobial agents. Synthetic amino acid-based surfactants constitute a promising alternative to conventional antimicrobial compounds given that they can be prepared from renewable raw materials. In this review, we discuss the structural features that promote antimicrobial activity of amino acid-based surfactants. Monocatenary, dicatenary and gemini surfactants that contain different amino acids on the polar head and show activity against bacteria are revised. The synthesis and basic physico-chemical properties have also been included.
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López-Sánchez J, Muñoz-Noval A, Serrano A, Abuín M, de la Figuera J, Marco JF, Pérez L, Carmona N, Rodríguez de la Fuente O. Growth, structure and magnetism of ε-Fe2O3 in nanoparticle form. RSC Adv 2016. [DOI: 10.1039/c6ra01912a] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We present a novel and easy synthetic path to prepare ε-Fe2O3 (∼90%) with a small portion of α-Fe2O3 nanoparticles embedded in an amorphous silica matrix.
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Affiliation(s)
- J. López-Sánchez
- Departamento de Física de Materiales
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
- Unidad Asociada IQFR(CSIC)-UCM
| | | | - A. Serrano
- Departamento de Física de Materiales
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
- Instituto de Cerámica y Vidrio
| | - M. Abuín
- Departamento de Física de Materiales
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
- CEI Campus Moncloa
| | - J. de la Figuera
- Unidad Asociada IQFR(CSIC)-UCM
- 28040 Madrid
- Spain
- Instituto de Química Física “Rocasolano”
- CSIC
| | - J. F. Marco
- Unidad Asociada IQFR(CSIC)-UCM
- 28040 Madrid
- Spain
- Instituto de Química Física “Rocasolano”
- CSIC
| | - L. Pérez
- Departamento de Física de Materiales
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
- Unidad Asociada IQFR(CSIC)-UCM
| | - N. Carmona
- Departamento de Física de Materiales
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
- Unidad Asociada IQFR(CSIC)-UCM
| | - O. Rodríguez de la Fuente
- Departamento de Física de Materiales
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
- Unidad Asociada IQFR(CSIC)-UCM
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Erazo M, Pérez L, Colmenares C, Álvarez H, Suárez I, Mendivelso F. Prevalencia y caracterización del dolor en pacientes hospitalizados. ACTA ACUST UNITED AC 2015. [DOI: 10.4321/s1134-80462015000600005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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47
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Fanjul M, Pérez L, Cerdá J, Zornoza M, Rojo R, Simal I, García-Casillas MA, Corona C, Peláez D, Molina E, Parente A, Rivas S, Angulo JM, De Tomás E. [Fast track protocol for children undergoing appendicectomy]. Cir Pediatr 2015; 28:177-183. [PMID: 27775294] [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] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Multiple approaches to the treatment of simple and complicated (gangrenous or perforated) appendicitis in children have been promoted. Our goal is to develop a new protocol for these patients that allows shorter hospital stays without increasing complications rates. METHODS Prospective collected data of patients undergoing appendicitis treated according to the new protocol for a period of 7 months were reviewed. This protocol consists on antibiotic prophylaxis in all cases continued with triple antibiotic regimen in complicated appendicitis. Antibiotics were stopped when specific clinical and laboratory criteria were met. Outcomes are compared to a historical group of patients treated under standard protocol (antibiotic prophylaxis followed by 48 hours of dual antibiotic therapy in simple appendicitis or 5 day-course of triple antibiotic therapy in complicated as postooperative antibiotic regimen). RESULTS A total of 196 patients (96 current group and 100 historical group) were reviewed. In simple appendicitis average length of postoperative hospitalization was significantly lower in the current group (no statistical difference). 52.9% of complicated appendicitis in the current group were discharged home before 5th day without increasing the complication rate. When a wound infection or intraabdominal abscess occurs thrombocytosis (52%) and prolonged vomiting are the most frequent symptoms. CONCLUSION No further postoperative treatment is needed in simple appendicitis. In complicated appendictis a short course of antibiotics according to clinical and laboratory criteria allows early discharge without major morbidity. Prolonged postoperative vomiting and thrombocytosis suggest infectious complications.
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Affiliation(s)
- M Fanjul
- Hospital General Universitario Gregorio Marañón. Madrid
| | - L Pérez
- Hospital General Universitario Gregorio Marañón. Madrid
| | - J Cerdá
- Hospital General Universitario Gregorio Marañón. Madrid
| | - M Zornoza
- Hospital General Universitario Gregorio Marañón. Madrid
| | - R Rojo
- Hospital General Universitario Gregorio Marañón. Madrid
| | - I Simal
- Hospital General Universitario Gregorio Marañón. Madrid
| | | | - C Corona
- Hospital General Universitario Gregorio Marañón. Madrid
| | - D Peláez
- Hospital General Universitario Gregorio Marañón. Madrid
| | - E Molina
- Hospital General Universitario Gregorio Marañón. Madrid
| | - A Parente
- Hospital General Universitario Gregorio Marañón. Madrid
| | - S Rivas
- Hospital General Universitario Gregorio Marañón. Madrid
| | - J M Angulo
- Hospital General Universitario Gregorio Marañón. Madrid
| | - E De Tomás
- Hospital General Universitario Gregorio Marañón. Madrid
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48
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Pérez L, Arias ME, Sánchez R, Felmer R. N-acetyl-L-cysteine pre-treatment protects cryopreserved bovine spermatozoa from reactive oxygen species without compromising the in vitro developmental potential of intracytoplasmic sperm injection embryos. Andrologia 2015; 47:1196-201. [PMID: 25771838 DOI: 10.1111/and.12412] [Citation(s) in RCA: 15] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2015] [Indexed: 11/29/2022] Open
Abstract
Excess of reactive oxygen species (ROS) on in vitro embryo production systems negatively affects the quality and developmental potential of embryos, as result of a decreased sperm quality and increased DNA fragmentation. This issue is of major importance in assisted fertilisation procedures such as intracytoplasmic sperm injection (ICSI), because this technique does not allow the natural selection of competent spermatozoa, and therefore, DNA-damaged spermatozoa might be used to fertilise an egg. The aim of this study was to investigate a new strategy to prevent the potential deleterious effect of ROS on cryopreserved bovine spermatozoa. We evaluated the effect of a sperm pre-treatment with different concentrations of N-acetyl-L-cysteine (NAC) on ROS production, viability and DNA fragmentation and assessed the effect of this treatment on the in vitro developmental potential and quality of embryos generated by ICSI. The results show a strong scavenging effect of 1 and 10 mm NAC after exposure of spermatozoa to a ROS inducer, without compromising the viability and DNA integrity. Importantly, in vitro developmental potential and quality of embryos generated by ICSI with spermatozoa treated with NAC were not affected, confirming the feasibility of using this treatment before an ICSI cycle.
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Affiliation(s)
- L Pérez
- Laboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - M E Arias
- Laboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - R Sánchez
- Laboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - R Felmer
- Laboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.,Department of Agricultural Sciences and Natural Resources, Faculty of Agriculture and Forestry, Universidad de La Frontera, Temuco, Chile
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49
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Pucci C, Scipioni A, Diociaiuti M, La Mesa C, Pérez L, Pons R. Catanionic vesicles and DNA complexes: a strategy towards novel gene delivery systems. RSC Adv 2015. [DOI: 10.1039/c5ra15466a] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Catanionic vesicles and DNA form complexes, the structure and composition of which depend on the DNA content. The DNA undergoes a reversible compaction process and its release can be triggered by adding an anionic surfactant to the complexes.
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Affiliation(s)
- C. Pucci
- Dept. of Chemistry
- La Sapienza University
- Rome
- Italy
| | - A. Scipioni
- Dept. of Chemistry
- La Sapienza University
- Rome
- Italy
| | - M. Diociaiuti
- Dip. di Tecnologie e Salute
- Istituto Superiore di Sanità
- I-00185 Rome
- Italy
| | - C. La Mesa
- Dept. of Chemistry
- La Sapienza University
- Rome
- Italy
| | - L. Pérez
- Institut Química Avançada de Catalunya
- IQAC-CSIC
- 08034 Barcelona
- Spain
| | - R. Pons
- Institut Química Avançada de Catalunya
- IQAC-CSIC
- 08034 Barcelona
- Spain
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50
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Gallego V, Vílchez MC, Peñaranda DS, Pérez L, Herráez MP, Asturiano JF, Martínez-Pastor F. Subpopulation pattern of eel spermatozoa is affected by post-activation time, hormonal treatment and the thermal regimen. Reprod Fertil Dev 2015; 27:529-43. [DOI: 10.1071/rd13198] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Accepted: 01/08/2014] [Indexed: 11/23/2022] Open
Abstract
There has been a marked reduction in natural stocks of eels (genus Anguilla) over the past 60 years, and the culture of eels is still based on the capture of very large quantities of juveniles. It is necessary to close the life cycle in captivity in order to ease the pressure on wild populations. The aims of the present study were to evaluate sperm subpopulations (through cluster analysis of computer-aided sperm analysis data) in the European eel (Anguilla anguilla) and to assess the effects of motility acquisition time after activation (i.e. at 30, 60 and 90 s), the thermal regimen (i.e. 10°C (T10) or 15°C (T15) and up to 20°C, or constant at 20°C (T20)) and hormonal treatments (i.e. human chorionic gonadotropin (hCG), recombinant (r) hCG or pregnant mare serum gonadotropin (PMSG)) on these subpopulations. In all cases, we obtained three subpopulations of spermatozoa: low velocity and linear (S1); high velocity with low linearity (S2); and high velocity and linear (S3; considered high quality). Total motility and S1 were affected by acquisition time; thus, 30 s is recommended as the standard time for motility acquisition. When eels were kept at 20°C (T20), motility data fitted quadratic models, with the highest motility and proportion of S3 between Weeks 8 and 12 after the first injection. Lower temperatures (T10, T15) delayed spermiation and the obtaining of high-quality spermatozoa (S3), but did not seem to alter the spermiation process (similar subpopulation pattern). Conversely, the hormonal treatments altered both the dynamics of the subpopulation pattern and the onset of spermiation (with PMSG delaying it). Total motility and the yield of S3 with the widely used hCG treatment varied throughout the spermiation period. However, using rhCG allowed us to obtain high-quality and constant motility for most of the study (Weeks 7–20), and the S3 yield was also higher overall (61.8 ± 1.3%; mean ± s.e.m.) and more stable over time than the other hormonal treatments (averaging 53.0 ± 1.4%). Using T20 and rhCG would be more economical and practical, allowing us to obtain a higher number of S3 spermatozoa over an extended time.
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