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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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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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4
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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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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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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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8
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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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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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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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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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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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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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Saborío Galo S, González K, Téllez Y, García N, Pérez L, Gresh L, Harris E, Balmaseda Á. Development of in-house serological methods for diagnosis and surveillance of chikungunya. Rev Panam Salud Publica 2017; 41:e56. [PMID: 28902269 PMCID: PMC5638038] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 06/23/2016] [Indexed: 10/13/2023] Open
Abstract
OBJECTIVE To develop and evaluate serological methods for chikungunya diagnosis and research in Nicaragua. METHODS Two IgM ELISA capture systems (MAC-ELISA) for diagnosis of acute chikungunya virus (CHIKV) infections, and two Inhibition ELISA Methods (IEM) to measure total antibodies against CHIKV were developed using monoclonal antibodies (mAbs) and hyperimmune serum at the National Virology Laboratory of Nicaragua in 2014-2015. The sensitivity, specificity, predictive values, and agreement of the MAC-ELISAs were obtained by comparing the results of 198 samples (116 positive; 82 negative) with the Centers for Disease Control and Prevention's IgM ELISA (Atlanta, Georgia, United States; CDC-MAC-ELISA). For clinical evaluation of the four serological techniques, 260 paired acute and convalescent phase serum samples of suspected chikungunya cases were used. RESULTS All four assays were standardized by determining the optimal concentrations of the different reagents. Processing times were substantially reduced compared to the CDC-MAC-ELISA. For the MAC-ELISA systems, a sensitivity of 96.6% and 97.4%, and a specificity of 98.8% and 91.5% were obtained using mAb and hyperimmune serum, respectively, compared with the CDC method. Clinical evaluation of the four serological techniques versus the CDC real-time RT-PCR assay resulted in a sensitivity of 95.7% and a specificity of 88.8%-95.9%. CONCLUSION Two MAC-ELISA and two IEM systems were standardized, demonstrating very good quality for chikungunya diagnosis and research demands. This will achieve more efficient epidemiological surveillance in Nicaragua, the first country in Central America to produce its own reagents for serological diagnosis of CHIKV. The methods evaluated here can be applied in other countries and will contribute to sustainable diagnostic systems to combat the disease.
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Affiliation(s)
- Saira Saborío Galo
- National Virology Laboratory, Centro Nacional de Diagnóstico y ReferenciaMinistry of HealthManaguaNicaraguaNational Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua.
| | - Karla González
- National Virology Laboratory, Centro Nacional de Diagnóstico y ReferenciaMinistry of HealthManaguaNicaraguaNational Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua.
| | - Yolanda Téllez
- National Virology Laboratory, Centro Nacional de Diagnóstico y ReferenciaMinistry of HealthManaguaNicaraguaNational Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua.
| | - Nadezna García
- National Virology Laboratory, Centro Nacional de Diagnóstico y ReferenciaMinistry of HealthManaguaNicaraguaNational Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua.
| | - Leonel Pérez
- National Virology Laboratory, Centro Nacional de Diagnóstico y ReferenciaMinistry of HealthManaguaNicaraguaNational Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua.
| | - Lionel Gresh
- Sustainable Sciences InstituteSustainable Sciences InstituteManaguaNicaraguaSustainable Sciences Institute, Managua, Nicaragua.
| | - Eva Harris
- Division of Infectious Diseases and Vaccinology, School of Public HealthUniversity of CaliforniaBerkeleyCaliforniaUnited States of AmericaDivision of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, California, United States of America.
| | - Ángel Balmaseda
- National Virology Laboratory, Centro Nacional de Diagnóstico y ReferenciaMinistry of HealthManaguaNicaraguaNational Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua.
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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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Balmaseda Á, Saborío Galo S, González K, Téllez Y, García N, Pérez L, Gresh L, Harris E. Development of in-house serological methods for diagnosis and surveillance of chikungunya. Rev Panam Salud Publica 2017. [PMID: 28902269 PMCID: PMC5638038 DOI: 10.26633/rpsp.2017.56] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Objective. To develop and evaluate serological methods for chikungunya diagnosis and research in Nicaragua. Methods. Two IgM ELISA capture systems (MAC-ELISA) for diagnosis of acute chikungunya virus (CHIKV) infections, and two Inhibition ELISA Methods (IEM) to measure total antibodies against CHIKV were developed using monoclonal antibodies (mAbs) and hyperimmune serum at the National Virology Laboratory of Nicaragua in 2014–2015. The sensitivity, specificity, predictive values, and agreement of the MAC-ELISAs were obtained by comparing the results of 198 samples (116 positive; 82 negative) with the Centers for Disease Control and Prevention’s IgM ELISA (Atlanta, Georgia, United States; CDC-MAC-ELISA). For clinical evaluation of the four serological techniques, 260 paired acute and convalescent phase serum samples of suspected chikungunya cases were used. Results. All four assays were standardized by determining the optimal concentrations of the different reagents. Processing times were substantially reduced compared to the CDC-MAC-ELISA. For the MAC-ELISA systems, a sensitivity of 96.6% and 97.4%, and a specificity of 98.8% and 91.5% were obtained using mAb and hyperimmune serum, respectively, compared with the CDC method. Clinical evaluation of the four serological techniques versus the CDC real-time RT-PCR assay resulted in a sensitivity of 95.7% and a specificity of 88.8%–95.9%. Conclusion. Two MAC-ELISA and two IEM systems were standardized, demonstrating very good quality for chikungunya diagnosis and research demands. This will achieve more efficient epidemiological surveillance in Nicaragua, the first country in Central America to produce its own reagents for serological diagnosis of CHIKV. The methods evaluated here can be applied in other countries and will contribute to sustainable diagnostic systems to combat the disease.
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Affiliation(s)
- Ángel Balmaseda
- National Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua
| | - Saira Saborío Galo
- National Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua
| | - Karla González
- National Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua
| | - Yolanda Téllez
- National Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua
| | - Nadezna García
- National Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua
| | - Leonel Pérez
- National Virology Laboratory, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua
| | - Lionel Gresh
- Sustainable Sciences Institute, Managua, Nicaragua
| | - Eva Harris
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, California, United States of America
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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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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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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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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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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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Baeza R, Mazzeo I, Vílchez MC, Gallego V, Peñaranda DS, Pérez L, Asturiano JF. Relationship between sperm quality parameters and the fatty acid composition of the muscle, liver and testis of European eel. Comp Biochem Physiol A Mol Integr Physiol 2014; 181:79-86. [PMID: 25483240 DOI: 10.1016/j.cbpa.2014.11.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 11/25/2014] [Accepted: 11/26/2014] [Indexed: 11/30/2022]
Abstract
This study looks at the correlations that fatty acids have with different tissues in the European eel (Anguilla anguilla L.) during hormonally-induced sexual maturation, with different sperm quality parameters. In order to evaluate the different dynamics of the use of fatty acids, a categorization of the results from each sperm quality parameter (volume, concentration, motility and velocity) was performed. Low and moderate correlations were observed between muscle tissue and some sperm quality parameters but no high correlations were found. Eicosapentaenoic acid (20:5n3, EPA) in the liver seems to have a role in determining the volume of sperm produced. This can be explained by the fact that EPA is a major requirement in the early phases of sperm production (probably as a component of the spermatozoal membrane). In addition, the levels of α-linolenic acid (18:3-n3, ALA) and linoleic acid (18:2-n6, LA) in the liver decreased when sperm motility increased. In all the tissues, a negative correlation was observed between arachidonic acid (20:4n-6, ARA) and the different sperm velocity parameters. The fact that an increase in the consumption of ARA coincides with an increase in the speed of spermatozoa, highlights the important role that this fatty acid plays not only in sperm production, but also in sperm velocity. All this information could prove useful in the development of suitable broodstock diets to improve sperm quality and subsequently, the larval development of this species.
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Affiliation(s)
- R Baeza
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - I Mazzeo
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - M C Vílchez
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - V Gallego
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - D S Peñaranda
- 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.
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Gallego V, Pérez L, Asturiano JF, Yoshida M. Sperm motility parameters and spermatozoa morphometric characterization in marine species: a study of swimmer and sessile species. Theriogenology 2014; 82:668-76. [PMID: 25016411 DOI: 10.1016/j.theriogenology.2014.05.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2013] [Revised: 05/20/2014] [Accepted: 05/22/2014] [Indexed: 11/28/2022]
Abstract
The biodiversity of marine ecosystems is diverse and a high number of species coexist side by side. However, despite the fact that most of these species share a common fertilization strategy, a high variability in terms of the size, shape, and motion of spermatozoa can be found. In this study, we have analyzed both the sperm motion parameters and the spermatozoa morphometric features of two swimmer (pufferfish and European eel) and two sessile (sea urchin and ascidian) marine species. The most important differences in the sperm motion parameters were registered in the swimming period. Sessile species sperm displayed notably higher values than swimmer species sperm. In addition, the sperm motilities and velocities of the swimmer species decreased sharply once the sperm was activated, whereas the sessile species were able to maintain their initial values for a long time. These results are linked directly to the species-specific lifestyles. Although sessile organisms, which show limited or no movement, need sperm with a capacity to swim for long distances to find the oocytes, swimmer organisms can move toward the female and release gametes near it, and therefore the spermatozoa does not need to swim for such a long time. At the same time, sperm morphology is related to sperm motion parameters, and in this study an in-depth morphometric analysis of ascidian, sea urchin, and pufferfish spermatozoa, using computer-assisted sperm analysis software, has been carried out for the first time. A huge variability in shapes, sizes, and structures of the studied species was found using electron microscopy.
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Affiliation(s)
- V Gallego
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Valencia, Spain; Misaki Marine Biological Station, Graduate School of Science, University of Tokyo, Miura, Japan
| | - L Pérez
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Valencia, Spain
| | - J F Asturiano
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Valencia, Spain.
| | - M Yoshida
- Misaki Marine Biological Station, Graduate School of Science, University of Tokyo, Miura, Japan
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Peñaranda DS, Mazzeo I, Gallego V, Hildahl J, Nourizadeh-Lillabadi R, Pérez L, Weltzien FA, Asturiano JF. The regulation of aromatase and androgen receptor expression during gonad development in male and female European eel. Reprod Domest Anim 2014; 49:512-21. [PMID: 24750538 DOI: 10.1111/rda.12321] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 03/23/2014] [Indexed: 11/27/2022]
Abstract
This research investigated the regulation of aromatase and androgen receptor gene expression in the brain-pituitary-gonad (BPG) axis of male and female European eels (Anguilla anguilla) during induced sexual maturation. Complete A. anguilla aromatase (aa-cyp19a1) and partial androgen receptor α and β (aa-ara and aa-arb) sequences were isolated, and qPCR assays were validated and used for quantification of transcript levels for these three genes. Expression levels of the genes varied with sex, tissue and stage of maturation. aa-arb was expressed at higher levels than aa-ara in the pituitary and gonad in both sexes, suggesting aa-arb is the physiologically most important androgen receptor in these tissues. In the female brain, a decrease in aa-ara and an increase in aa-cyp19a1 were observed at the vitellogenic stage. In contrast, a progressive increase in all three genes was observed in the pituitary and ovaries throughout gonadal development, with aa-arb and aa-cyp19a1 reaching significantly higher levels at the vitellogenic stage. In the male pituitary, a decrease in aa-arb and an increase in aa-cyp19a1 were observed at the beginning of spermatogenesis, and thereafter remained low and high, respectively. In the testis, the transcript levels of androgen receptors and aa-cyp19a1 were higher during the early stages of spermatogenesis and decreased thereafter. These sex-dependent differences in the regulation of the expression of aa-ara, aa-arb and cyp19a1 are discussed in relation to the role of androgens and their potential aromatization in the European eel during gonadal maturation.
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Affiliation(s)
- D S Peñaranda
- Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Valencia, Spain; Department of Basic Sciences and Aquatic Medicine, Norwegian University of Life Sciences (NMBU), Oslo, Norway
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Tagarro A, Pérez L, Quintero VM, Cañete A. Dexamethasone does not reduce length of hospitalization or recurrent wheezing 1 year after early bronchiolitis. Minerva Pediatr 2014; 66:131-140. [PMID: 24835446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM It has been suggested that a 6-day dexamethasone course combined with adrenaline may significantly reduce the admission rate in outpatients. It has also been suggested that prednisolone may reduce recurrent wheezing. Our aim was to investigate whether treatment with steroids, especially high dose dexamethasone, is associated with the length of hospitalization or with recurrent wheezing. METHODS A prospective-retrospective observational study was performed from January 2009 to December 2011 in a secondary care hospital. Eighty previously healthy patients aged 7-180 days who were hospitalized with a first episode of acute bronchiolitis (AB) were studied. AB treatment was at the attending physician's discretion, among those tested for AB with some benefit. Eligible drugs included bronchodilators and steroids. Primary short-term outcome studied was days of hospitalization. Primary long term outcome was "recurrent wheezing". RESULTS Median length of hospitalization was 6 days for all groups. Patients treated with dexamethasone (1 mg/kg/day for 1 day, plus 0.6 mg/kg/day for 5 days) had an average length of hospitalization of 6.8 ± 3.1 (range, 4-20) days, those on prednisolone (prednisolone 1-2 mg/kg/day for 5 days) 7.0 ± 2.6 (range, 4-12) days and those with no steroids 6.6 ± 3.3 (3-21) days (no significant differences). The analysis showed no evidence of association of any management schedule with recurrent wheezing. After adjusting long-term outcome variables for potential confounders, comparisons remained no different. CONCLUSION High dose dexamethasone or medium-dose prednisolone during AB provided no benefit in a short or long-term period in young, previously healthy hospitalized infants.
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Affiliation(s)
- A Tagarro
- Pediatrics Department University Hospital Infanta Sofía San Sebastián de los Reyes, Madrid, Spain -
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Isidoro M, Soto S, Pérez L, Cabañes X, Domingo M. Central nervous System Pathology in Infectious Diseases of Cetaceans Stranded on the Catalan Mediterranean Sea (1990–2013). J Comp Pathol 2014. [DOI: 10.1016/j.jcpa.2013.11.032] [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: 10/25/2022]
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Abstract
Changes in coercivity and atomic distances (EXAFS) of 20 nm Fe53Co47 thin films grown by DC and PCD magnetron sputtering.
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Affiliation(s)
- M. Abuín
- CEI Campus Moncloa
- UCM-UPM
- 28040 Madrid, Spain
- Dpto. de Física de Materiales
- Universidad Complutense de Madrid
| | - L. Pérez
- Dpto. de Física de Materiales
- Universidad Complutense de Madrid
- 28040 Madrid, Spain
- Unidad Asociada IQFR(CSIC)-UCM
- Madrid 28040, Spain
| | - A. Mascaraque
- Dpto. de Física de Materiales
- Universidad Complutense de Madrid
- 28040 Madrid, Spain
- Unidad Asociada IQFR(CSIC)-UCM
- Madrid 28040, Spain
| | - M. Maicas
- Institute for Systems based on Optoelectronics and Microtechnology (ISOM)
- Universidad Politécnica de Madrid
- 28040 Madrid, Spain
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Arias ME, Sánchez R, Risopatrón J, Pérez L, Felmer R. Effect of sperm pretreatment with sodium hydroxide and dithiothreitol on the efficiency of bovine intracytoplasmic sperm injection. Reprod Fertil Dev 2014; 26:847-54. [DOI: 10.1071/rd13009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 05/20/2013] [Indexed: 11/23/2022] Open
Abstract
The efficiency of intracytoplasmic sperm injection (ICSI) in bovines is lower than in other species due, in part, to a lack of optimal conditions for its implementation; this has hindered the achievement of high rates of embryonic development and the birth of live offspring. The aim of the present study was to evaluate the effects of pretreatment of bovine spermatozoa with NaOH and dithiothreitol (DTT) on the viability, plasma membrane integrity, DNA fragmentation and in vitro developmental potential of embryos generated by ICSI. Following pretreatment of spermatozoa with 5 mM DTT for 20 min and a low concentration of NaOH (1 mM for 60 min), there were fewer live and acrosome reacted spermatozoa (44% and 34%, respectively) than in the control group without treatment (82%). Spermatozoa subjected to higher alkali concentrations (10–50 mM) were mostly dead and reacted. However, pronuclear formation, cleavage, blastocyst rate and embryo quality did not differ between these pretreatment groups and the untreated control group. In conclusion, we have described, for the first time, the effects of NaOH treatment on bovine spermatozoa and subsequent in vitro embryonic development after ICSI, and have demonstrated that pretreatment of bovine spermatozoa with NaOH or DTT is not necessary for an appropriate in vitro embryo development in this species.
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Ayuela Azcárate J, Clau-Terré F, Vicho Pereira R, Guerrero de Mier M, Carrillo López A, Ochagavia A, López Pérez J, Trenado Alvarez J, Pérez L, Llompart-Pou J, González de Molina F, Fojón S, Rodríguez Salgado A, Martínez Díaz M, Royo Villa C, Romero Bermejo F, Ruíz Bailén M, Arroyo Díez M, Argueso García M, Fernández Fernández J. Documento de consenso para la formación en ecografía en Medicina Intensiva. Proceso asistencial, uso de la técnica y adquisición de competencias profesionales. Med Intensiva 2014; 38:33-40. [DOI: 10.1016/j.medin.2013.07.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 07/11/2013] [Accepted: 07/12/2013] [Indexed: 10/25/2022]
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de los Ríos A, Pérez L, Ortiz-Zarragoitia M, Serrano T, Barbero MC, Echavarri-Erasun B, Juanes JA, Orbea A, Cajaraville MP. Assessing the effects of treated and untreated urban discharges to estuarine and coastal waters applying selected biomarkers on caged mussels. Mar Pollut Bull 2013; 77:251-265. [PMID: 24156823 DOI: 10.1016/j.marpolbul.2013.09.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 09/18/2013] [Accepted: 09/26/2013] [Indexed: 06/02/2023]
Abstract
To assess effects of urban discharges, biomarkers were measured in caged mussels in northern Iberian Peninsula. Lysosomal membrane stability and histopathology of gonad and digestive gland were analysed as general effect biomarkers. Exposure to specific pollutants was evaluated by autometallographical detection of metals, peroxisomal acyl-CoA oxidase activity, micronucleus test and transcription levels of vitellogenin and MT20 genes. Health status of mussels was impaired after 3 days of caging at the untreated outfall discharge and at the waste water treatment plant effluent discharge to the estuary. The most relevant finding was the significant up-regulation of vitellogenin gene transcription in male mussels exposed to the untreated outfall discharge. Metals and xenoestrogenic endocrine disruptors were bioavailable in some discharges and disturbed the health status of mussels. Biomarkers were effective in the assessment of effects of urban discharges and could be implemented in operative controls required to assess the risks associated to effluent discharges.
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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 no. 15, 39011 Santander, Spain
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