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Entrena-Barbero E, Ceballos-Santos SS, Cortés A, Esteve-Llorens X, Moreira MT, Villanueva-Rey P, Quiñoy D, Almeida C, Marques A, Quinteiro P, Dias AC, Laso J, Margallo M, Aldaco R, Feijoo G. Methodological guidelines for the calculation of a Water-Energy-Food nexus index for seafood products. Sci Total Environ 2023; 877:162845. [PMID: 36933707 DOI: 10.1016/j.scitotenv.2023.162845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 05/06/2023]
Abstract
Indicators from life cycle assessment methodologies (i.e., footprints) have emerged as useful tools for identifying and communicating the environmental impacts of a system thanks to they are accessible and intuitive and easy to understand to non-expert public. However, the focus on a single environmental problem is one of their main drawbacks. From this idea arises the concept of Water-Energy-Food (WEF) nexus, with the aim of raising awareness of the connections between the universal rights to water supply, energy security and food provision. Regarding the latter, the fisheries sector stands out as a fundamental pillar in the fight against malnutrition. In this sense, the European project "blue growth" aims to ensure that the development of the marine sector is not linked to the degradation of its ecosystems. However, although producers and authorities are willing to communicate the sustainability of products, there is still no standard methodology for reporting it. With the purpose of remedying this current situation, this paper aims to provide technical guidance to calculate a single WEF nexus index for ecolabelling seafood products in the European framework (Atlantic area). Therefore, through this, it is expected to create a useful communication channel between producers and consumers through an easy-to-read ecolabel. Nonetheless, certain aspects, such as the footprints selected or the calculation procedures selected have to be reconsidered to refine the methodology proposed, apart from broadening the approach to other food sectors with the aim that the proposed eco-certification can be present in major supply and retail chains.
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Affiliation(s)
- Eduardo Entrena-Barbero
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain
| | - Sandra Surname Ceballos-Santos
- Departamento de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. de Los Castros, s/n, 39005 Santander, Spain
| | - Antonio Cortés
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain
| | - Xavier Esteve-Llorens
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain
| | - María Teresa Moreira
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain
| | - Pedro Villanueva-Rey
- Energylab, Fonte das Abelleiras s/n, Campus Universidad de Vigo, 36310 Vigo, Spain
| | - Diego Quiñoy
- Energylab, Fonte das Abelleiras s/n, Campus Universidad de Vigo, 36310 Vigo, Spain
| | - Cheila Almeida
- IPMA, Instituto Portugês do Mar e da Atmosfera, Divisão de Aquacultura, Valorização e Bioprospeão, Avenida Doutor Alfredo Magalhães Ramalho 6, 1495-165 Lisboa, Portugal; CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal
| | - António Marques
- IPMA, Instituto Portugês do Mar e da Atmosfera, Divisão de Aquacultura, Valorização e Bioprospeão, Avenida Doutor Alfredo Magalhães Ramalho 6, 1495-165 Lisboa, Portugal; CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal
| | - Paula Quinteiro
- Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Ana Cláudia Dias
- Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Jara Laso
- Departamento de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. de Los Castros, s/n, 39005 Santander, Spain
| | - María Margallo
- Departamento de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. de Los Castros, s/n, 39005 Santander, Spain
| | - Rubén Aldaco
- Departamento de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. de Los Castros, s/n, 39005 Santander, Spain.
| | - Gumersindo Feijoo
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain
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de la Cruz-Merino L, Gion M, Cruz J, Alonso-Romero JL, Quiroga V, Moreno F, Andrés R, Santisteban M, Ramos M, Holgado E, Cortés J, López-Miranda E, Cortés A, Henao F, Palazón-Carrión N, Rodriguez LM, Ceballos I, Soto A, Puertes A, Casas M, Benito S, Chiesa M, Bezares S, Caballero R, Jiménez-Cortegana C, Sánchez-Margalet V, Rojo F. Pembrolizumab in combination with gemcitabine for patients with HER2-negative advanced breast cancer: GEICAM/2015-04 (PANGEA-Breast) study. BMC Cancer 2022; 22:1258. [PMID: 36463104 PMCID: PMC9719636 DOI: 10.1186/s12885-022-10363-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 11/24/2022] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND We evaluated a new chemoimmunotherapy combination based on the anti-PD1 monoclonal antibody pembrolizumab and the pyrimidine antimetabolite gemcitabine in HER2- advanced breast cancer (ABC) patients previously treated in the advanced setting, in order to explore a potential synergism that could eventually obtain long term benefit in these patients. METHODS HER2-negative ABC patients received 21-day cycles of pembrolizumab 200 mg (day 1) and gemcitabine (days 1 and 8). A run-in-phase (6 + 6 design) was planned with two dose levels (DL) of gemcitabine (1,250 mg/m2 [DL0]; 1,000 mg/m2 [DL1]) to determine the recommended phase II dose (RP2D). The primary objective was objective response rate (ORR). Tumor infiltrating lymphocytes (TILs) density and PD-L1 expression in tumors and myeloid-derived suppressor cells (MDSCs) levels in peripheral blood were analyzed. RESULTS Fourteen patients were treated with DL0, resulting in RP2D. Thirty-six patients were evaluated during the first stage of Simon's design. Recruitment was stopped as statistical assumptions were not met. The median age was 52; 21 (58%) patients had triple-negative disease, 28 (78%) visceral involvement, and 27 (75%) ≥ 2 metastatic locations. Progression disease was observed in 29 patients. ORR was 15% (95% CI, 5-32). Eight patients were treated ≥ 6 months before progression. Fourteen patients reported grade ≥ 3 treatment-related adverse events. Due to the small sample size, we did not find any clear association between immune tumor biomarkers and treatment efficacy that could identify a subgroup with higher probability of response or better survival. However, patients that experienced a clinical benefit showed decreased MDSCs levels in peripheral blood along the treatment. CONCLUSION Pembrolizumab 200 mg and gemcitabine 1,250 mg/m2 were considered as RP2D. The objective of ORR was not met; however, 22% patients were on treatment for ≥ 6 months. ABC patients that could benefit of chemoimmunotherapy strategies must be carefully selected by robust and validated biomarkers. In our heavily pretreated population, TILs, PD-L1 expression and MDSCs levels could not identify a subgroup of patients for whom the combination of gemcitabine and pembrolizumab would induce long term benefit. TRIAL REGISTRATION ClinicalTrials.gov and EudraCT (NCT03025880 and 2016-001,779-54, respectively). Registration dates: 20/01/2017 and 18/11/2016, respectively.
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Affiliation(s)
- L. de la Cruz-Merino
- grid.411375.50000 0004 1768 164XDepartment of Medical Oncology, Medicine Department, Virgen Macarena University Hospital, University of Seville, Dr. Fedriani St, No. 3, Seville, 41009 Spain ,grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain
| | - M. Gion
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.411347.40000 0000 9248 5770Department of Medical Oncology, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - J. Cruz
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.411220.40000 0000 9826 9219Department of Medical Oncology, Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain
| | - JL. Alonso-Romero
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.411372.20000 0001 0534 3000Department of Medical Oncology, Hospital Clínico Universitario Virgen de La Arrixaca-IMIB, Murcia, Spain
| | - V. Quiroga
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.418701.b0000 0001 2097 8389Department of Medical Oncology, Badalona Applied Research Group in Oncology (B-ARGO Group), Catalan Institute of Oncology, Badalona, Spain
| | - F. Moreno
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.411068.a0000 0001 0671 5785Department of Medical Oncology, Hospital Clínico Universitario San Carlos, Madrid, Spain
| | - R. Andrés
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.411050.10000 0004 1767 4212Department of Medical Oncology, Hospital Clínico Universitario Lozano Blesa, Saragossa, Spain
| | - M. Santisteban
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.411730.00000 0001 2191 685XDepartment of Medical Oncology, Clínica Universidad de Navarra, Navarra, Spain ,grid.508840.10000 0004 7662 6114IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
| | - M. Ramos
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.418394.3Department of Medical Oncology, Centro Oncológico de Galicia, A Coruña, Spain
| | - E. Holgado
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.414808.10000 0004 1772 3571Department of Medical Oncology, Hospital La Luz, Quironsalud, Madrid, Spain
| | - J. Cortés
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,International Breast Cancer Center (IBCC), Quiron Group, Barcelona and Madrid, Spain ,grid.411083.f0000 0001 0675 8654Vall d´Hebron Institute of Oncology (VHIO), Barcelona, Spain ,grid.119375.80000000121738416Faculty of Biomedical and Health Sciences, Department of Medicine, Universidad Europea de Madrid, Madrid, Spain
| | - E. López-Miranda
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.411347.40000 0000 9248 5770Department of Medical Oncology, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - A. Cortés
- grid.411347.40000 0000 9248 5770Department of Medical Oncology, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - F. Henao
- grid.411375.50000 0004 1768 164XDepartment of Medical Oncology, Medicine Department, Virgen Macarena University Hospital, University of Seville, Dr. Fedriani St, No. 3, Seville, 41009 Spain ,grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain
| | - N. Palazón-Carrión
- grid.411375.50000 0004 1768 164XDepartment of Medical Oncology, Medicine Department, Virgen Macarena University Hospital, University of Seville, Dr. Fedriani St, No. 3, Seville, 41009 Spain ,grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain
| | - L. M. Rodriguez
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.411220.40000 0000 9826 9219Department of Medical Oncology, Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain
| | - I. Ceballos
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.411220.40000 0000 9826 9219Department of Medical Oncology, Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain
| | - A. Soto
- grid.411372.20000 0001 0534 3000Department of Medical Oncology, Hospital Clínico Universitario Virgen de La Arrixaca-IMIB, Murcia, Spain
| | - A. Puertes
- grid.411372.20000 0001 0534 3000Department of Medical Oncology, Hospital Clínico Universitario Virgen de La Arrixaca-IMIB, Murcia, Spain
| | - M. Casas
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain
| | - S. Benito
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain
| | - M. Chiesa
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain
| | - S. Bezares
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain
| | - R. Caballero
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain
| | - C. Jiménez-Cortegana
- grid.411375.50000 0004 1768 164XMedical Biochemistry and Molecular Biology and Immunology Department, Virgen Macarena University Hospital, University of Seville, Seville, Spain
| | - V. Sánchez-Margalet
- grid.411375.50000 0004 1768 164XMedical Biochemistry and Molecular Biology and Immunology Department, Virgen Macarena University Hospital, University of Seville, Seville, Spain
| | - F. Rojo
- grid.430580.aGEICAM Spanish Breast Cancer Group, San Sebastián de los Reyes, Madrid, Spain ,grid.419651.e0000 0000 9538 1950Pathology Department, IIS-Fundación Jiménez Díaz, Madrid, Spain ,CIBERONC-ISCIII, Madrid, Spain
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Cortés A, Esteve-Llorens X, González-García S, Moreira MT, Feijoo G. Multi-product strategy to enhance the environmental profile of the canning industry towards circular economy. Sci Total Environ 2021; 791:148249. [PMID: 34118679 DOI: 10.1016/j.scitotenv.2021.148249] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/19/2021] [Accepted: 06/01/2021] [Indexed: 06/12/2023]
Abstract
The sustainable and continued production of enough food to feed the entire world's population is one of the main concerns in the food industry. Spain, and in particular Galicia, which is an eminently fishing region characterised by the consumption of large quantities of fish, both fresh and processed, must face the challenge of shifting its seafood productive fabric towards a circular economy. To achieve this objective, the first task is to demonstrate that circular economy principles allow to reduce the environmental impacts associated with seafood production. In this sense, this study proposes the environmental evaluation of the skipjack tuna (Katsuwonus pelamis) value chain within a canning industry located in Galicia through the LCA methodology from an attributional perspective, including the valorisation processes for biowaste (edible and inedible by-products). Results indicate that the main crucial subsystems of the value chain are tuna fishing and the canning process, as it was expected considering other similar studies on seafood products. Moreover, this specific case study demonstrates that the multi-product strategy applied to the canning sector is environmentally viable. Thus, although the environmental impacts of the entire system are increased by including further valorisation operations, the environmental loads assigned to the main product (canned tuna) decrease compared to the one-product system by assigning environmental burdens to other value-added products (tuna pâté, fishmeal, and fish oil).
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Affiliation(s)
- Antonio Cortés
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain.
| | - Xavier Esteve-Llorens
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain
| | - Sara González-García
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain
| | - Maria Teresa Moreira
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain
| | - Gumersindo Feijoo
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain
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Fidalgo JP, Cortés A, García Y, Iglesias M, Sarmiento UB, García EC, Manso L, Santaballa A, Oaknin A, Redondo A, Rubio M, González-Martín A. 734P Neutrophil-lymphocyte ratio predicts survival in platinum-resistant ovarian cancer patients treated with olaparib and pegylated liposomal doxorubicin (PLD): Stratified analysis from the phase II clinical trial ROLANDO, GEICO-1601. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1177] [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: 10/20/2022] Open
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Perez-Fidalgo JA, Cortés A, Guerra E, García Y, Iglesias M, Bohn Sarmiento U, Calvo García E, Manso Sánchez L, Santaballa A, Oaknin A, Redondo A, Rubio MJ, González-Martín A. Olaparib in combination with pegylated liposomal doxorubicin for platinum-resistant ovarian cancer regardless of BRCA status: a GEICO phase II trial (ROLANDO study). ESMO Open 2021; 6:100212. [PMID: 34329939 PMCID: PMC8446804 DOI: 10.1016/j.esmoop.2021.100212] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/17/2021] [Accepted: 06/24/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND There is limited evidence for the benefit of olaparib in platinum-resistant ovarian cancer (PROC) patients with BRCA wild-type tumors. This study investigated whether this combination of a DNA-damaging chemotherapy plus olaparib is effective in PROC regardless BRCA status. PATIENTS AND METHODS Patients with high-grade serous or endometrioid ovarian carcinoma and one previous PROC recurrence were enrolled regardless of BRCA status. Patients with ≤4 previous lines (up to 5 in BRCA-mut) with at least one previous platinum-sensitive relapse were included; primary PROC was allowed only in case of BRCA-mut. Patients initially received six cycles of olaparib 300 mg b.i.d. (biduum) + intravenous pegylated liposomal doxorubicin (PLD) 40 mg/m2 (PLD40) every 28 days, followed by maintenance with olaparib 300 mg b.i.d. until progression or toxicity. The PLD dose was reduced to 30 mg/m2 (PLD30) due to toxicity. The primary endpoint was progression-free survival (PFS) at 6 months (6m-PFS) by RECIST version 1.1. A proportion of 40% 6m-PFS or more was considered of clinical interest. RESULTS From 2017 to 2020, 31 PROC patients were included. BRCA mutations were present in 16%. The median of previous lines was 2 (range 1-5). The overall disease control rate was 77% (partial response rate of 29% and stable disease rate of 48%). After a median follow-up of 10 months, the 6m-PFS and median PFS were 47% and 5.8 months, respectively. Grade ≥3 treatment-related adverse events occurred in 74% of patients, with neutropenia/anemia being the most frequent. With PLD30 serious AEs were less frequent than with PLD40 (21% versus 47%, respectively); moreover, PLD30 was associated with less PLD delays (32% versus 38%) and reductions (16% versus 22%). CONCLUSIONS The PLD-olaparib combination has shown significant activity in PROC regardless of BRCA status. PLD at 30 mg/m2 is better tolerated in the combination.
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Affiliation(s)
- J A Perez-Fidalgo
- Department of Medical Oncology, Hospital Clínico Universitario de Valencia, Valencia, Spain.
| | - A Cortés
- Department of Medical Oncology, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - E Guerra
- Department of Medical Oncology, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Y García
- Department of Medical Oncology, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí (I3PT), Universitat Autònoma de Barcelona, Sabadell, Spain
| | - M Iglesias
- Department of Medical Oncology, Hospital Son Llatzer, Palma De Mallorca, Spain
| | - U Bohn Sarmiento
- Department of Medical Oncology, Hospital Universitario de Gran Canaria Doctor Negrín, Las Palmas De Gran Canaria, Spain
| | - E Calvo García
- Department of Medical Oncology, Hospital Universitario Virgen del Rocío, Sevilla, Spain
| | - L Manso Sánchez
- Department of Medical Oncology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - A Santaballa
- Department of Medical Oncology, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - A Oaknin
- Department of Medical Oncology, Hospital Universitario Vall d'Hebron, Barcelona, Spain
| | - A Redondo
- Department of Medical Oncology, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
| | - M J Rubio
- Department of Medical Oncology, Hospital Universitario Reina Sofia, Córdoba, Spain
| | - A González-Martín
- Department of Medical Oncology Department, Clínica Universidad de Navarra, Madrid, Spain
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Cortés A, Coral J, McLachlan C, Corredor JAG, Benítez R. Molecular transduction in receptor-ligand systems by planar electromagnetic fields. BRAZ J BIOL 2021; 82:e232525. [PMID: 34076160 DOI: 10.1590/1519-6984.232525] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 09/26/2020] [Indexed: 11/22/2022] Open
Abstract
The coupling of a ligand with a molecular receptor induces a signal that travels through the receptor, reaching the internal domain and triggering a response cascade. In previous work on T-cell receptors and their coupling with foreign antigens, we observed the presence of planar molecular patterns able to generate electromagnetic fields within the proteins. These planes showed a coherent (synchronized) behavior, replicating immediately in the intracellular domain that which occurred in the extracellular domain as the ligand was coupled. In the present study, we examined this molecular transduction - the capacity of the coupling signal to penetrate deep inside the receptor molecule and induce a response. We verified the presence of synchronized behavior in diverse receptor-ligand systems. To appreciate this diversity, we present four biochemically different systems - TCR-peptide, calcium pump-ADP, haemoglobin-oxygen, and gp120-CD4 viral coupling. The confirmation of synchronized molecular transduction in each of these systems suggests that the proposed mechanism would occur in all biochemical receptor-ligand systems.
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Affiliation(s)
- A Cortés
- Department of Molecular Physics, Synthetic Vaccine and New Drug Research Institute - IVSI, Popayán, Colombia
| | - J Coral
- Department of Molecular Physics, Synthetic Vaccine and New Drug Research Institute - IVSI, Popayán, Colombia
| | - C McLachlan
- Department of Molecular Physics, Synthetic Vaccine and New Drug Research Institute - IVSI, Popayán, Colombia
| | - J A G Corredor
- Chemistry Department, Universidad del Cauca, Popayán, Colombia
| | - R Benítez
- Chemistry Department, Chemical of Natural Products group, Universidad del Cauca, Popayán, Colombia
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Toscano ER, Reneses B, Pérez S, Andrés P, Seara G, Sevilla J, Cortés A, Del Rey-Mejías Á. Analysis of a clinical process of schizophrenia and other psychoses with a process mining method. Eur Psychiatry 2021. [PMCID: PMC9476061 DOI: 10.1192/j.eurpsy.2021.1071] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Clinical pathways (CPWs) are tools used to guide evidence-based healthcare. They translate clinical practice guideline recommendations into clinical processes of care within the characteristics of a healthcare institution. There are few studies about the impact of CPW in the field of Psychosis in terms of adequacy to their recommendations and clinical outcomes. Objectives PSYCHSTAGE project has been designed to study the adjustment of psychosis clinical care to a CPW based in a Clinical Practice Guideline according to a clinical staging model in a network of psychiatric services covering 580.000 inhabitants in a University Hospital in Madrid. Methods Retrospective and observational study in a sample of 1780 subjects 18 years old or above, diagnosed with schizophrenia and other psychosis. Socio-demographic and clinical variables were collected from clinical records, including ICG, GAF and DAS at the time they were included in the study. Clinical stage was established according to McGorry model at the same time. CPW was analysed in 1,391 subjects with 15,254 care events using a Process mining method. Process discovery, process checking and process enhancement analysis have been used. Results Patients were grouped according the clinical stage. 9,2% were in stage 2; 18,5% in 3a; 47% in 3b; 22,1% in 3c and 4,1% in 4. A different CPW is represented for each clinical stage in routine practice. Then, every pathway is compared with the recommendations in the established Psychosis CPW. Conclusions Process mining can be a useful tool for the study of CPW in the field of psychosis
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Ruiz-Salmón I, Laso J, Margallo M, Villanueva-Rey P, Rodríguez E, Quinteiro P, Dias AC, Almeida C, Nunes ML, Marques A, Cortés A, Moreira MT, Feijoo G, Loubet P, Sonnemann G, Morse AP, Cooney R, Clifford E, Regueiro L, Méndez D, Anglada C, Noirot C, Rowan N, Vázquez-Rowe I, Aldaco R. Life cycle assessment of fish and seafood processed products - A review of methodologies and new challenges. Sci Total Environ 2021; 761:144094. [PMID: 33360652 DOI: 10.1016/j.scitotenv.2020.144094] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 09/23/2020] [Revised: 11/17/2020] [Accepted: 11/22/2020] [Indexed: 06/12/2023]
Abstract
Life cycle assessment (LCA) has been widely applied in many different sectors, but the marine products and seafood segment have received relatively little attention in the past. In recent decades, global fish production experienced sustained growth and peaked at about 179 million tonnes in 2018. Consequently, increased interest in the environmental implications of fishery products along the supply chain, namely from capture to end of life, was recently experienced by society, industry and policy-makers. This timely review aims to describe the current framework of LCA and its application to the seafood sector that mainly focused on fish extraction and processing, but it also encompassed the remaining stages. An excess of 60 studies conducted over the last decade, along with some additional publications, were comprehensively reviewed; these focused on the main LCA methodological choices, including but not limited to, functional unit, system boundaries allocation methods and environmental indicators. The review identifies key recommendations on the progression of LCA for this increasingly important sustaining seafood sector. Specifically, these recommendations include (i) the need for specific indicators for fish-related activities, (ii) the target species and their geographical origin, (iii) knowledge and technology transfer and, (iv) the application and implementation of key recommendations from LCA research that will improve the accuracy of LCA models in this sector. Furthermore, the review comprises a section addressing previous and current challenges of the seafood sector. Wastewater treatment, ghost fishing or climate change, are also the objects of discussion together with advocating support for the water-energy-food nexus as a valuable tool to minimize environmental negativities and to frame successful synergies.
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Affiliation(s)
- Israel Ruiz-Salmón
- Departamento de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. de Los Castros, s.n., 39005 Santander, Spain.
| | - Jara Laso
- Departamento de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. de Los Castros, s.n., 39005 Santander, Spain
| | - María Margallo
- Departamento de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. de Los Castros, s.n., 39005 Santander, Spain
| | - Pedro Villanueva-Rey
- EnergyLab, Fonte das Abelleiras s/n, Campus Universidad de Vigo, 36310 Vigo, Galicia, Spain
| | - Eduardo Rodríguez
- EnergyLab, Fonte das Abelleiras s/n, Campus Universidad de Vigo, 36310 Vigo, Galicia, Spain
| | - Paula Quinteiro
- Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Ana Cláudia Dias
- Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Cheila Almeida
- IPMA - Instituto Português do Mar e da Atmosfera (IPMA), Divisão de Aquacultura, Valorização e Bioprospeção, Avenida Doutor Alfredo Magalhães Ramalho 6, 1495-165 Lisboa, Portugal
| | - Maria Leonor Nunes
- IPMA - Instituto Português do Mar e da Atmosfera (IPMA), Divisão de Aquacultura, Valorização e Bioprospeção, Avenida Doutor Alfredo Magalhães Ramalho 6, 1495-165 Lisboa, Portugal; CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal
| | - António Marques
- IPMA - Instituto Português do Mar e da Atmosfera (IPMA), Divisão de Aquacultura, Valorização e Bioprospeção, Avenida Doutor Alfredo Magalhães Ramalho 6, 1495-165 Lisboa, Portugal; CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal
| | - Antonio Cortés
- Department of Chemical Engineering, Institute of Technology, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - María Teresa Moreira
- Department of Chemical Engineering, Institute of Technology, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - Gumersindo Feijoo
- Department of Chemical Engineering, Institute of Technology, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - Philippe Loubet
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France
| | - Guido Sonnemann
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France
| | - Andrew P Morse
- School of Environmental Sciences, University of Liverpool, Liverpool, UK
| | - Ronan Cooney
- School of Engineering, NUI Galway, Galway H91 HX31 j Ryan Institute, NUI Galway, H91 TK33; Ryan Institute, NUI Galway, Ireland
| | - Eoghan Clifford
- School of Engineering, NUI Galway, Galway H91 HX31 j Ryan Institute, NUI Galway, H91 TK33; Ryan Institute, NUI Galway, Ireland
| | | | - Diego Méndez
- ANFACO-CECOPESCA, Campus University 16, 36310 Vigo PO, Spain
| | - Clémentine Anglada
- VertigoLab, Darwin Ecosystème, 87 Quai de Queyries, 33100 Bordeaux, France
| | - Christelle Noirot
- VertigoLab, Darwin Ecosystème, 87 Quai de Queyries, 33100 Bordeaux, France
| | - Neil Rowan
- Bioscience Research Institute, Athlone Institute of Technology, Ireland
| | - Ian Vázquez-Rowe
- Peruvian LCA Network (PELCAN), Department of Engineering, Pontificia Universidad Católica del Perú, Avenida Universitaria 1801, San Miguel, 15088 Lima, Peru
| | - Rubén Aldaco
- Departamento de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. de Los Castros, s.n., 39005 Santander, Spain
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Cortés A, Jiménez-Suárez A, Campo M, Ureña A, Prolongo S. 3D printed epoxy-CNTs/GNPs conductive inks with application in anti-icing and de-icing systems. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.110090] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Cortés A, Moreira MT, Domínguez J, Lores M, Feijoo G. Unraveling the environmental impacts of bioactive compounds and organic amendment from grape marc. J Environ Manage 2020; 272:111066. [PMID: 32669260 DOI: 10.1016/j.jenvman.2020.111066] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 06/08/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
In a society that produces large amounts of solid waste, the search for new methods of valorisation has led to the development of techniques that make it possible to obtain new products from waste. In the case of bio-waste, biological treatment such as anaerobic digestion or composting appear to be suitable options for producing bio-energy or bio-fertilizers respectively. Vermicomposting is a method of converting solid organic waste into resources through bio-oxidation and stabilization of the organic waste by earthworms. The purpose of this study is to establish the environmental impacts of a complete route for the valorisation of grape pomace in order to identify environmental hotspots. In this valorisation route, different value-added products are produced with potential application in the cosmetic, food and pharmaceutical sectors. Priority was given to the use of primary data in the elaboration of the data inventories needed to perform the life cycle assessment (LCA). The main findings from this study reported that the energy requirement of the distillation process is an important hot spot of the process. Although the valorisation route has some poor results in terms of the two environmental indicators (carbon footprint and normalised impact index), when economic revenues were included in this analysis, its environmental performance was better than that of other alternatives for bio-waste recovery.
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Affiliation(s)
- Antonio Cortés
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
| | - Maria Teresa Moreira
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Jorge Domínguez
- Grupo de Ecoloxía Animal (GEA), Universidade de Vigo, 36310, Vigo, Spain
| | - Marta Lores
- CRETUS Institute, Department of Analytical Chemistry, Nutrition and Food Sciences, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Gumersindo Feijoo
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
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Cortés A, Oliveira LFS, Ferrari V, Taffarel SR, Feijoo G, Moreira MT. Environmental assessment of viticulture waste valorisation through composting as a biofertilisation strategy for cereal and fruit crops. Environ Pollut 2020; 264:114794. [PMID: 32428819 DOI: 10.1016/j.envpol.2020.114794] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 04/14/2020] [Revised: 05/09/2020] [Accepted: 05/09/2020] [Indexed: 06/11/2023]
Abstract
Composting is a solid waste management alternative that avoids the emission of methane associated with its disposal in landfill and reduces or eliminates the need for chemical fertilisers if compost is applied. The main objective of this study was to analyse the environmental burdens of composting as a way to achieve a more circular valorisation of wine waste. To do so, with the purpose of identifying optimal operational conditions and determining the "hotspots" of the process, the life cycle assessment (LCA) methodology was used. The consumption of diesel fuel in machinery was determined to be the main critical point in the environmental effects of the system, followed by the transport and distribution of the compost. After the application of compost instead of mineral fertilisers, corn, tomato and strawberry crops would have a better environmental performance in most impact categories. In this sense, a maximum improvement of 65% in terrestrial ecotoxicity is achieved in strawberry cultivation. In light of the results obtained, it is demonstrated that composting is a suitable way of organic waste valorisation according to Circular Economy principles.
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Affiliation(s)
- Antonio Cortés
- CRETUS Institute. Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
| | - Luis F S Oliveira
- Department of Civil and Environmental, Universidad De La Costa, Calle 58 #55-56, 080002, Barranquilla, Atlántico, Colombia
| | - Valdecir Ferrari
- Beigrupo, Br 470 Km 223.3, Integração, Garibaldi, RS, 95720-000, Brazil
| | - Silvio R Taffarel
- Laboratory of Environmental Researches and Nanotechnology Development, Centro Universitário La Salle, Victor Barreto, 2288 Centro 92010-000, Canoas, RS, Brazil
| | - Gumersindo Feijoo
- CRETUS Institute. Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Maria Teresa Moreira
- CRETUS Institute. Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
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Perez Fidalgo J, Cortés A, García Y, Iglesias M, Bohn Sarmiento U, Calvo García E, Manso Sánchez L, Santaballa A, Oaknin A, Redondo A, Rubio M, González Martín A. 832P GEICO1601-ROLANDO trial: A multicentric single arm phase II clinical trial to evaluate the combination of olaparib and pegylated liposomal doxorubicin for platinum-resistant ovarian cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.971] [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: 12/01/2022] Open
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14
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Cortés A, Moreira MT, Feijoo G. Integrated evaluation of wine lees valorization to produce value-added products. Waste Manag 2019; 95:70-77. [PMID: 31351656 DOI: 10.1016/j.wasman.2019.05.056] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 02/19/2019] [Revised: 05/29/2019] [Accepted: 05/30/2019] [Indexed: 05/21/2023]
Abstract
The integrated evaluation of the valorization of wine lees to produce value-added products was carried out in this study from a life-cycle perspective. The consumption of steam has been demonstrated as the main hot spot, reaching 85.7% of the impact on Fossil Depletion and 85.3% on Climate Change. Bearing in mind that four different value-added products are produced, a sensitivity analysis was carried out in order to ascertain the influence of the functional unit and the allocation method on the environmental outcomes. The performance of this system was compared to other processes that produce antioxidants from different raw materials. These processes were phycocyanin recovery from Spirulina platensis cyanobacterium, the production of the red antioxidant astaxanthin by microalgae and the valorization of the macroalgae Sargassum muticum. Wine lees valorization showed a better environmental profile throughout the entire life cycle, due to the fact that most of the operations performed are physical (solid/liquid separations, distillations, evaporations, etc.) and do not involve a large consumption of electricity or chemicals. However, there is still room for improvement, and future research should focus on optimizing the extraction of antioxidants from wine lees using two-stages aqueous systems, ultrasonic or microwave assisted extraction, in the pursuit of better performance and lower environmental impact.
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Affiliation(s)
- Antonio Cortés
- Department of Chemical Engineering, School of Engineering, Universidade de Santiago de Compostela, Rúa Lope Gómez de Marzoa, s/n, 15782 Santiago de Compostela, Spain.
| | - Maria Teresa Moreira
- Department of Chemical Engineering, School of Engineering, Universidade de Santiago de Compostela, Rúa Lope Gómez de Marzoa, s/n, 15782 Santiago de Compostela, Spain
| | - Gumersindo Feijoo
- Department of Chemical Engineering, School of Engineering, Universidade de Santiago de Compostela, Rúa Lope Gómez de Marzoa, s/n, 15782 Santiago de Compostela, Spain
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Martínez A, Ortega F, Cuberos R, Garcés T, Sánchez M, Cortés A. Análisis Psicométrico y Adaptación del Test de Autoconcepto Forma 5 en Universitarios Asiduos al Uso de Videojuegos. REV IBEROAM DIAGN EV 2018. [DOI: 10.21865/ridep49.4.06] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Guitart-Mampel M, Gonzalez-Tendero A, Niñerola S, Morén C, Catalán-Garcia M, González-Casacuberta I, Juárez-Flores DL, Ugarteburu O, Matalonga L, Cascajo MV, Tort F, Cortés A, Tobias E, Milisenda JC, Grau JM, Crispi F, Gratacós E, Garrabou G, Cardellach F. Cardiac and placental mitochondrial characterization in a rabbit model of intrauterine growth restriction. Biochim Biophys Acta Gen Subj 2018; 1862:1157-1167. [PMID: 29452236 DOI: 10.1016/j.bbagen.2018.02.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 02/09/2018] [Accepted: 02/09/2018] [Indexed: 10/18/2022]
Abstract
BACKGROUND Intrauterine growth restriction (IUGR) is associated with cardiovascular remodeling persisting into adulthood. Mitochondrial bioenergetics, essential for embryonic development and cardiovascular function, are regulated by nuclear effectors as sirtuins. A rabbit model of IUGR and cardiovascular remodeling was generated, in which heart mitochondrial alterations were observed by microscopic and transcriptomic analysis. We aimed to evaluate if such alterations are translated at a functional mitochondrial level to establish the etiopathology and potential therapeutic targets for this obstetric complication. METHODS Hearts and placentas from 16 IUGR-offspring and 14 controls were included to characterize mitochondrial function. RESULTS Enzymatic activities of complexes II, IV and II + III in IUGR-hearts (-11.96 ± 3.16%; -15.58 ± 5.32%; -14.73 ± 4.37%; p < 0.05) and II and II + III in IUGR-placentas (-17.22 ± 3.46%; p < 0.005 and -29.64 ± 4.43%; p < 0.001) significantly decreased. This was accompanied by a not significant reduction in CI-stimulated oxygen consumption and significantly decreased complex II SDHB subunit expression in placenta (-44.12 ± 5.88%; p < 0.001). Levels of mitochondrial content, Coenzyme Q and cellular ATP were conserved. Lipid peroxidation significantly decreased in IUGR-hearts (-39.02 ± 4.35%; p < 0.001), but not significantly increased in IUGR-placentas. Sirtuin3 protein expression significantly increased in IUGR-hearts (84.21 ± 31.58%; p < 0.05) despite conserved anti-oxidant SOD2 protein expression and activity in both tissues. CONCLUSIONS IUGR is associated with cardiac and placental mitochondrial CII dysfunction. Up-regulated expression of Sirtuin3 may explain attenuation of cardiac oxidative damage and preserved ATP levels under CII deficiency. GENERAL SIGNIFICANCE These findings may allow the design of dietary interventions to modulate Sirtuin3 expression and consequent regulation of mitochondrial imbalance associated with IUGR and derived cardiovascular remodeling.
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Affiliation(s)
- M Guitart-Mampel
- Muscle Research and Mitochondrial Function Laboratory, Cellex - IDIBAPS, Faculty of Medicine and Health Science, University of Barcelona, Internal Medicine Service, Hospital Clínic of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - A Gonzalez-Tendero
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Deu), Clinical Institute of Obstetrics, Gynecology and Neonatology, IDIBAPS, University of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - S Niñerola
- Muscle Research and Mitochondrial Function Laboratory, Cellex - IDIBAPS, Faculty of Medicine and Health Science, University of Barcelona, Internal Medicine Service, Hospital Clínic of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - C Morén
- Muscle Research and Mitochondrial Function Laboratory, Cellex - IDIBAPS, Faculty of Medicine and Health Science, University of Barcelona, Internal Medicine Service, Hospital Clínic of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - M Catalán-Garcia
- Muscle Research and Mitochondrial Function Laboratory, Cellex - IDIBAPS, Faculty of Medicine and Health Science, University of Barcelona, Internal Medicine Service, Hospital Clínic of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - I González-Casacuberta
- Muscle Research and Mitochondrial Function Laboratory, Cellex - IDIBAPS, Faculty of Medicine and Health Science, University of Barcelona, Internal Medicine Service, Hospital Clínic of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - D L Juárez-Flores
- Muscle Research and Mitochondrial Function Laboratory, Cellex - IDIBAPS, Faculty of Medicine and Health Science, University of Barcelona, Internal Medicine Service, Hospital Clínic of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - O Ugarteburu
- Section of Inborn Errors of Metabolism - IBC, Biochemistry and Molecular Genetics Service, Hospital Clínic of Barcelona - IDIBAPS, Barcelona, Spain; CIBERER, Madrid, Spain
| | - L Matalonga
- Section of Inborn Errors of Metabolism - IBC, Biochemistry and Molecular Genetics Service, Hospital Clínic of Barcelona - IDIBAPS, Barcelona, Spain; CIBERER, Madrid, Spain
| | - M V Cascajo
- Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide - CSIC - JA, Sevilla, Spain; CIBERER, Madrid, Spain
| | - F Tort
- Section of Inborn Errors of Metabolism - IBC, Biochemistry and Molecular Genetics Service, Hospital Clínic of Barcelona - IDIBAPS, Barcelona, Spain; CIBERER, Madrid, Spain
| | - A Cortés
- Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide - CSIC - JA, Sevilla, Spain; CIBERER, Madrid, Spain
| | - E Tobias
- Muscle Research and Mitochondrial Function Laboratory, Cellex - IDIBAPS, Faculty of Medicine and Health Science, University of Barcelona, Internal Medicine Service, Hospital Clínic of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - J C Milisenda
- Muscle Research and Mitochondrial Function Laboratory, Cellex - IDIBAPS, Faculty of Medicine and Health Science, University of Barcelona, Internal Medicine Service, Hospital Clínic of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - J M Grau
- Muscle Research and Mitochondrial Function Laboratory, Cellex - IDIBAPS, Faculty of Medicine and Health Science, University of Barcelona, Internal Medicine Service, Hospital Clínic of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - F Crispi
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Deu), Clinical Institute of Obstetrics, Gynecology and Neonatology, IDIBAPS, University of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - E Gratacós
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Deu), Clinical Institute of Obstetrics, Gynecology and Neonatology, IDIBAPS, University of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain
| | - G Garrabou
- Muscle Research and Mitochondrial Function Laboratory, Cellex - IDIBAPS, Faculty of Medicine and Health Science, University of Barcelona, Internal Medicine Service, Hospital Clínic of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain.
| | - F Cardellach
- Muscle Research and Mitochondrial Function Laboratory, Cellex - IDIBAPS, Faculty of Medicine and Health Science, University of Barcelona, Internal Medicine Service, Hospital Clínic of Barcelona, Barcelona, Spain; CIBERER, Madrid, Spain.
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Cortés A, Coral J, McLachlan C, Benítez R, Pinilla L. [Planar molecular arrangements aid the design of MHC class II binding peptides]. Mol Biol (Mosk) 2017; 51:524-533. [PMID: 28707669 DOI: 10.7868/s0026898417020082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 05/19/2016] [Indexed: 11/23/2022]
Abstract
The coupling between peptides and MHC-II proteins in the human immune system is not well understood. This work presents an evidence-based hypothesis of a guiding intermolecular force present in every human MHC-II protein (HLA-II). Previously, we examined the spatial positions of the fully conserved residues in all HLA-II protein types. In each one, constant planar patterns were revealed. These molecular planes comprise of amino acid groups of the same chemical species (for example, Gly) distributed across the protein structure. Each amino acid plane has a unique direction and this directional element offers spatial selectivity. Constant within all planes, too, is the presence of an aromatic residue possessing electrons in movement, leading the authors to consider that the planes generate electromagnetic fields that could serve as an attractive force in a single direction. Selection and attraction between HLA-II molecules and antigen peptides would, therefore, be non-random, resulting in a coupling mechanism as effective and rapid as is clearly required in the immune response. On the basis of planar projections onto the HLA-II groove, modifications were made by substituting the key residues in the class II-associated invariant chain peptide-a peptide with a universal binding affinity-resulting in eight different modified peptides with affinities greater than that of the unmodified peptide. Accurate and reliable prediction of MHC class II-binding peptides may facilitate the design of universal vaccine-peptides with greatly enhanced binding affinities. The proposed mechanisms of selection, attraction and coupling between HLA-II and antigen peptides are explained further in the paper.
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Affiliation(s)
- A Cortés
- Department of Molecular Physics, Synthetic Vaccine and New Drug Research Institute, IVSI, Popayán, Colombia.,
| | - J Coral
- Department of Molecular Physics, Synthetic Vaccine and New Drug Research Institute, IVSI, Popayán, Colombia
| | - C McLachlan
- Department of Molecular Physics, Synthetic Vaccine and New Drug Research Institute, IVSI, Popayán, Colombia
| | - R Benítez
- Department of Chemistry, Natural Product Chemistry Research Group University of Cauca Popayán, CP 190002 Colombia
| | - L Pinilla
- Department of Medicine, Faculty of Medicine National University of Colombia, Bogotá, Colombia
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Guitart X, Bonaventura J, Rea W, Orrú M, Cellai L, Dettori I, Pedata F, Brugarolas M, Cortés A, Casadó V, Chang CP, Narayanan M, Chern Y, Ferré S. Equilibrative nucleoside transporter ENT1 as a biomarker of Huntington disease. Neurobiol Dis 2016; 96:47-53. [PMID: 27567601 DOI: 10.1016/j.nbd.2016.08.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 08/05/2016] [Accepted: 08/22/2016] [Indexed: 02/03/2023] Open
Abstract
The initial goal of this study was to investigate alterations in adenosine A2A receptor (A2AR) density or function in a rat model of Huntington disease (HD) with reported insensitivity to an A2AR antagonist. Unsuspected negative results led to the hypothesis of a low striatal adenosine tone and to the search for the mechanisms involved. Extracellular striatal concentrations of adenosine were measured with in vivo microdialysis in two rodent models of early neuropathological stages of HD disease, the Tg51 rat and the zQ175 knock-in mouse. In view of the crucial role of the equilibrative nucleoside transporter (ENT1) in determining extracellular content of adenosine, the binding properties of the ENT1 inhibitor [3H]-S-(4-Nitrobenzyl)-6-thioinosine were evaluated in zQ175 mice and the differential expression and differential coexpression patterns of the ENT1 gene (SLC29A1) were analyzed in a large human cohort of HD disease and controls. Extracellular striatal levels of adenosine were significantly lower in both animal models as compared with control littermates and striatal ENT1 binding sites were significantly upregulated in zQ175 mice. ENT1 transcript was significantly upregulated in HD disease patients at an early neuropathological severity stage, but not those with a higher severity stage, relative to non-demented controls. ENT1 transcript was differentially coexpressed (gained correlations) with several other genes in HD disease subjects compared to the control group. The present study demonstrates that ENT1 and adenosine constitute biomarkers of the initial stages of neurodegeneration in HD disease and also predicts that ENT1 could constitute a new therapeutic target to delay the progression of the disease.
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Affiliation(s)
- Xavier Guitart
- Integrative Neurobiology Section, National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, United States
| | - Jordi Bonaventura
- Integrative Neurobiology Section, National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, United States
| | - William Rea
- Integrative Neurobiology Section, National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, United States
| | - Marco Orrú
- Integrative Neurobiology Section, National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, United States
| | - Lucrezia Cellai
- Department NEUROFARBA, Division of Pharmacology and Toxicology, University of Florence, 50139 Florence, Italy
| | - Ilaria Dettori
- Department NEUROFARBA, Division of Pharmacology and Toxicology, University of Florence, 50139 Florence, Italy
| | - Felicita Pedata
- Department NEUROFARBA, Division of Pharmacology and Toxicology, University of Florence, 50139 Florence, Italy
| | - Marc Brugarolas
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Center for Biomedical Research in Neurodegenerative Diseases Network and Institute of Biomedicine, 08028 Barcelona, Spain
| | - Antonio Cortés
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Center for Biomedical Research in Neurodegenerative Diseases Network and Institute of Biomedicine, 08028 Barcelona, Spain
| | - Vicent Casadó
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Center for Biomedical Research in Neurodegenerative Diseases Network and Institute of Biomedicine, 08028 Barcelona, Spain
| | - Ching-Pang Chang
- Division of Neuroscience Institute of Biomedical Sciences, Academia Sinica, 11529 Taipei, Taiwan
| | - Manikandan Narayanan
- Systems Genomics and Bioinformatics Unit, Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, Intramural Research Program, National Institutes of Health, Bethesda, MD 20892, United States
| | - Yijuang Chern
- Division of Neuroscience Institute of Biomedical Sciences, Academia Sinica, 11529 Taipei, Taiwan
| | - Sergi Ferré
- Integrative Neurobiology Section, National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, United States.
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Diaz G, Vargas M, Cortés A. Evaluation of the supplementation of a feed additive as a potential protector against the adverse effects of 2.5 ppm T-2 toxin on growing broiler chickens. ARQ BRAS MED VET ZOO 2016. [DOI: 10.1590/1678-4162-8416] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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 trial was conducted to evaluate a feed additive containing epoxidase activity from a bacterium (Mycofix-S) as a potential protection against the adverse effects of 2.5 ppm dietary T-2 toxin in male growing broiler chickens. A total of 144 one-day-old Ross 308 male chicks were individually wing-banded and allotted into each of the four experimental groups. Group 1: negative control, no T-2 toxin or additive; group 2: Mycofix-S, 2.5 g/kg; group 3: positive control, 2.5 ppm T-2 toxin; group 4: 2.5 ppm T-2 toxin + 2.5 g/kg Mycofix-S. Feed and water were provided ad libitum for 28 days (days 1 to 28 of age). Each experimental treatment was replicated 6 times, with 6 birds per replicate pen. Response variables included performance parameters, serum activity of alkaline phosphatase (ALP) and amylase, relative weight of selected organs and histology of the upper digestive system. T-2 toxin at 2.5 ppm significantly (P = 0.016) decreased the 28-day body weight gain and cumulative feed intake without affecting feed conversion. The feed additive counteracted these adverse effects. Serum enzyme activities were not significantly (P>0.05) affected for the four experimental groups but when data from the groups receiving T-2 toxin was pooled and compared against the pooled data from groups without the toxin a significant decrease in amylase activity was observed in chickens receiving T-2 toxin. The histological examination of the upper digestive system revealed lesions in mouth, esophagus, proventriculus, gizzard and duodenum in the chickens fed T-2 toxin without the additive. Chickens fed T-2 toxin plus the additive showed lesions in the same tissues except in the duodenum. The results of the present study show that the addition of 2.5 g/kg of the feed additive tested protects against adverse effects on performance and also the integrity of the duodenal mucosa.
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Affiliation(s)
- G.J. Diaz
- Universidad Nacional de Colombia, Colombia
| | | | - A. Cortés
- Universidad Nacional de Colombia, Colombia
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21
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Navarro G, Aguinaga D, Angelats E, Medrano M, Moreno E, Mallol J, Cortés A, Canela EI, Casadó V, McCormick PJ, Lluís C, Ferré S. A Significant Role of the Truncated Ghrelin Receptor GHS-R1b in Ghrelin-induced Signaling in Neurons. J Biol Chem 2016; 291:13048-62. [PMID: 27129257 DOI: 10.1074/jbc.m116.715144] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [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: 01/11/2016] [Indexed: 01/01/2023] Open
Abstract
The truncated non-signaling ghrelin receptor growth hormone secretagogue R1b (GHS-R1b) has been suggested to simply exert a dominant negative role in the trafficking and signaling of the full and functional ghrelin receptor GHS-R1a. Here we reveal a more complex modulatory role of GHS-R1b. Differential co-expression of GHS-R1a and GHS-R1b, both in HEK-293T cells and in striatal and hippocampal neurons in culture, demonstrates that GHS-R1b acts as a dual modulator of GHS-R1a function: low relative GHS-R1b expression potentiates and high relative GHS-R1b expression inhibits GHS-R1a function by facilitating GHS-R1a trafficking to the plasma membrane and by exerting a negative allosteric effect on GHS-R1a signaling, respectively. We found a preferential Gi/o coupling of the GHS-R1a-GHS-R1b complex in HEK-293T cells and, unexpectedly, a preferential Gs/olf coupling in both striatal and hippocampal neurons in culture. A dopamine D1 receptor (D1R) antagonist blocked ghrelin-induced cAMP accumulation in striatal but not hippocampal neurons, indicating the involvement of D1R in the striatal GHS-R1a-Gs/olf coupling. Experiments in HEK-293T cells demonstrated that D1R co-expression promotes a switch in GHS-R1a-G protein coupling from Gi/o to Gs/olf, but only upon co-expression of GHS-R1b. Furthermore, resonance energy transfer experiments showed that D1R interacts with GHS-R1a, but only in the presence of GHS-R1b. Therefore, GHS-R1b not only determines the efficacy of ghrelin-induced GHS-R1a-mediated signaling but also determines the ability of GHS-R1a to form oligomeric complexes with other receptors, promoting profound qualitative changes in ghrelin-induced signaling.
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Affiliation(s)
- Gemma Navarro
- From the Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, 08028 Barcelona, Spain,
| | - David Aguinaga
- From the Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, 08028 Barcelona, Spain
| | - Edgar Angelats
- From the Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, 08028 Barcelona, Spain
| | - Mireia Medrano
- From the Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, 08028 Barcelona, Spain
| | - Estefanía Moreno
- From the Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, 08028 Barcelona, Spain
| | - Josefa Mallol
- From the Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, 08028 Barcelona, Spain
| | - Antonio Cortés
- From the Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, 08028 Barcelona, Spain
| | - Enric I Canela
- From the Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, 08028 Barcelona, Spain
| | - Vicent Casadó
- From the Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, 08028 Barcelona, Spain
| | - Peter J McCormick
- the School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom, and
| | - Carme Lluís
- From the Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, 08028 Barcelona, Spain
| | - Sergi Ferré
- the Integrative Neurobiology Section, National Institute on Drug Abuse, Intramural Research Program, Baltimore, Maryland 21224
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22
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Matias-Guiu J, Fernández de Bobadilla R, Escudero G, Pérez-Pérez J, Cortés A, Morenas-Rodríguez E, Valles-Salgado M, Moreno-Ramos T, Kulisevsky J, Matías-Guiu J. Validación de la versión española del test Addenbrooke's Cognitive Examination III para el diagnóstico de demencia. Neurologia 2015; 30:545-51. [DOI: 10.1016/j.nrl.2014.05.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 05/09/2014] [Accepted: 05/18/2014] [Indexed: 12/22/2022] Open
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Matias-Guiu J, Fernández de Bobadilla R, Escudero G, Pérez-Pérez J, Cortés A, Morenas-Rodríguez E, Valles-Salgado M, Moreno-Ramos T, Kulisevsky J, Matías-Guiu J. Validation of the Spanish version of Addenbrooke's Cognitive Examination III for diagnosing dementia. Neurología (English Edition) 2015. [DOI: 10.1016/j.nrleng.2014.05.001] [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: 10/22/2022] Open
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Cortés A, Fernández M, Martínez N, Guerra E, López E, Olmedo M, Longo F, Cortez P, Muñoz J, Gómez A, Roberts E, Reguera P, Gión M, Madariaga A, Molina J, Villamayor M, Martínez O, Mezquita L, Ferreiro R, Carrato A. 1915 Comparison of local clinical subtyping to central molecular classification using microarray-based gene expression test in early breast cancer patients. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30864-4] [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: 11/16/2022]
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25
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Ferré S, Bonaventura J, Tomasi D, Navarro G, Moreno E, Cortés A, Lluís C, Casadó V, Volkow ND. Allosteric mechanisms within the adenosine A2A-dopamine D2 receptor heterotetramer. Neuropharmacology 2015; 104:154-60. [PMID: 26051403 DOI: 10.1016/j.neuropharm.2015.05.028] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [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: 04/03/2015] [Accepted: 05/22/2015] [Indexed: 12/18/2022]
Abstract
The structure constituted by a G protein coupled receptor (GPCR) homodimer and a G protein provides a main functional unit and oligomeric entities can be viewed as multiples of dimers. For GPCR heteromers, experimental evidence supports a tetrameric structure, comprised of two different homodimers, each able to signal with its preferred G protein. GPCR homomers and heteromers can act as the conduit of allosteric interactions between orthosteric ligands. The well-known agonist/agonist allosteric interaction in the adenosine A2A receptor (A2AR)-dopamine D2 receptor (D2R) heteromer, by which A2AR agonists decrease the affinity of D2R agonists, gave the first rationale for the use of A2AR antagonists in Parkinson's disease. We review new pharmacological findings that can be explained in the frame of a tetrameric structure of the A2AR-D2R heteromer: first, ligand-independent allosteric modulations by the D2R that result in changes of the binding properties of A2AR ligands; second, differential modulation of the intrinsic efficacy of D2R ligands for G protein-dependent and independent signaling; third, the canonical antagonistic Gs-Gi interaction within the frame of the heteromer; and fourth, the ability of A2AR antagonists, including caffeine, to also exert the same allosteric modulations of D2R ligands than A2AR agonists, while A2AR agonists and antagonists counteract each other's effects. These findings can have important clinical implications when evaluating the use of A2AR antagonists. They also call for the need of monitoring caffeine intake when evaluating the effect of D2R ligands, when used as therapeutic agents in neuropsychiatric disorders or as probes in imaging studies. This article is part of the Special Issue entitled 'Purines in Neurodegeneration and Neuroregeneration'.
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Affiliation(s)
- Sergi Ferré
- Integrative Neurobiology Section, National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA.
| | - Jordi Bonaventura
- Integrative Neurobiology Section, National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Dardo Tomasi
- National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 2092, USA
| | - Gemma Navarro
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
| | - Estefanía Moreno
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
| | - Antonio Cortés
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
| | - Carme Lluís
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
| | - Vicent Casadó
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
| | - Nora D Volkow
- National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 2092, USA
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26
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Cortés A, Muñoz-Antoli C, Sotillo J, Fried B, Esteban JG, Toledo R. Echinostoma caproni (Trematoda): differential in vivo mucin expression and glycosylation in high- and low-compatible hosts. Parasite Immunol 2015; 37:32-42. [PMID: 25382212 DOI: 10.1111/pim.12159] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 11/04/2014] [Indexed: 12/25/2022]
Abstract
Enhanced mucus production and release appears to be a common mechanism for the clearance of intestinal helminths, and this expulsion is normally mediated by Th2-type immune responses. To investigate the factors determining the expulsion of intestinal helminths, we have analysed in vivo expression of mucin genes at the site of infection in two host species displaying different compatibility with Echinostoma caproni (Trematoda). Surprisingly, a general down-regulation on mucin mRNA expression was detected in low-compatible hosts (rats) coinciding with the development of Th2/Th17 responses and the early rejection of the worms from the intestinal lumen. This suggests the existence of a mechanism by which the parasites can modulate the mucus barrier to favour their survival. In highly compatible hosts (mice), some mucin genes were found to be up-regulated throughout the infection, probably, to protect the intestinal epithelium against the infection-induced inflammation developed in this host species. Moreover, infection-induced changes on mucin glycans were also studied by lectin histochemistry. Similar alterations were detected in the ileum of infected mice and rats, except with SNA lectin, indicating that sylated mucins might play an important role in determining the evolution of the infection in each host species.
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Affiliation(s)
- A Cortés
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Burjassot, Valencia, Spain
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27
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Espinosa MI, Bertin A, Squeo FA, Cortés A, Gouin N. Comparison of DNA extraction methods for polymerase chain reaction amplification of guanaco (Lama guanicoe) fecal DNA samples. Genet Mol Res 2015; 14:400-6. [PMID: 25729972 DOI: 10.4238/2015.january.23.13] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Feces-based population genetic studies have become increasingly popular. However, polymerase chain reaction (PCR) amplification rates from fecal material vary depending on the species, populations, loci, and extraction protocols. Here, we assessed the PCR amplification success of three microsatellite markers and a segment of the mitochondrial control region of DNA extracted from field-collected feces of guanaco (Lama guanicoe) using two protocols - Qiagen DNA Stool Kit and 2 cetyltrimethylammonium bromide/phenol:chloroform:isoamyl alcohol (2CTAB/PCI) method. Chelex resin treatment to remove inhibitors was also tested. Our results show that the mitochondrial locus was the most difficult to amplify. PCR success rates improved for all markers after Chelex treatment of extracted DNA, and 2CTAB/PCI method (95.83%) appeared to perform slightly better than stool kit (91.67%) for the nuclear markers. Amplification success was significantly influenced by the extraction method, Chelex treatment, and locus (P < 0.001) but not by the freshness of the feces (fresh vs old, P = 0.17). The repeatability levels were high without Chelex treatment (> 0.89), but they decreased slightly after treatment for amplification of nuclear markers and markedly after treatment for amplification of the mitochondrial control region. Thus, we showed that Chelex treatment gives high PCR success, especially for nuclear markers, and adequate DNA extraction rates can be achieved from L. guanicoe feces even from non-fresh fecal material. Although not significant, 2CTAB/PCI method tended to provide higher successful amplification rates on a whole set of samples, suggesting that the method could be particularly useful when using small sample sizes.
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Affiliation(s)
- M I Espinosa
- Departamento de Biología, Facultad de Ciencias, Universidad de La Serena, La Serena, Chile
| | - A Bertin
- Departamento de Biología, Facultad de Ciencias, Universidad de La Serena, La Serena, Chile
| | - F A Squeo
- Departamento de Biología, Facultad de Ciencias, Universidad de La Serena, La Serena, Chile
| | - A Cortés
- Departamento de Biología, Facultad de Ciencias, Universidad de La Serena, La Serena, Chile
| | - N Gouin
- Departamento de Biología, Facultad de Ciencias, Universidad de La Serena, La Serena, Chile
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Farré D, Muñoz A, Moreno E, Reyes-Resina I, Canet-Pons J, Dopeso-Reyes IG, Rico AJ, Lluís C, Mallol J, Navarro G, Canela EI, Cortés A, Labandeira-García JL, Casadó V, Lanciego JL, Franco R. Stronger Dopamine D1 Receptor-Mediated Neurotransmission in Dyskinesia. Mol Neurobiol 2014; 52:1408-1420. [PMID: 25344317 DOI: 10.1007/s12035-014-8936-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Accepted: 10/09/2014] [Indexed: 11/26/2022]
Abstract
Radioligand binding assays to rat striatal dopamine D1 receptors showed that brain lateralization of the dopaminergic system were not due to changes in expression but in agonist affinity. D1 receptor-mediated striatal imbalance resulted from a significantly higher agonist affinity in the left striatum. D1 receptors heteromerize with dopamine D3 receptors, which are considered therapeutic targets for dyskinesia in parkinsonian patients. Expression of both D3 and D1-D3 receptor heteromers were increased in samples from 6-hydroxy-dopamine-hemilesioned rats rendered dyskinetic by treatment with 3, 4-dihydroxyphenyl-L-alanine (L-DOPA). Similar findings were obtained using striatal samples from primates. Radioligand binding studies in the presence of a D3 agonist led in dyskinetic, but not in lesioned or L-DOPA-treated rats, to a higher dopamine sensitivity. Upon D3-receptor activation, the affinity of agonists for binding to the right striatal D1 receptor increased. Excess dopamine coming from L-DOPA medication likely activates D3 receptors thus making right and left striatal D1 receptors equally responsive to dopamine. These results show that dyskinesia occurs concurrently with a right/left striatal balance in D1 receptor-mediated neurotransmission.
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MESH Headings
- 2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine/pharmacology
- Animals
- Caudate Nucleus/drug effects
- Caudate Nucleus/physiopathology
- Corpus Striatum/drug effects
- Corpus Striatum/physiopathology
- Dimerization
- Dominance, Cerebral/drug effects
- Dopamine/metabolism
- Dopamine Agonists/pharmacology
- Dyskinesia, Drug-Induced/etiology
- Dyskinesia, Drug-Induced/physiopathology
- Gene Expression Regulation/drug effects
- Levodopa/pharmacology
- Levodopa/toxicity
- Macaca fascicularis
- Male
- Oxidopamine/toxicity
- Parkinsonian Disorders/chemically induced
- Parkinsonian Disorders/physiopathology
- Putamen/drug effects
- Putamen/physiopathology
- Radioligand Assay
- Rats
- Rats, Wistar
- Receptors, Dopamine D1/agonists
- Receptors, Dopamine D1/biosynthesis
- Receptors, Dopamine D1/genetics
- Receptors, Dopamine D1/physiology
- Receptors, Dopamine D3/biosynthesis
- Receptors, Dopamine D3/genetics
- Receptors, Dopamine D3/physiology
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Affiliation(s)
- Daniel Farré
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Diagonal 645, Prevosti Building, 08028, Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Ana Muñoz
- Laboratory of Neuroanatomy and Experimental Neurology, Department of Morphological Sciences, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), University of Santiago de Compostela, Santiago de Compostela, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Estefanía Moreno
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Diagonal 645, Prevosti Building, 08028, Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Irene Reyes-Resina
- Neuroscience Department, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Júlia Canet-Pons
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Diagonal 645, Prevosti Building, 08028, Barcelona, Spain
| | - Iria G Dopeso-Reyes
- Neuroscience Department, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Alberto J Rico
- Neuroscience Department, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Carme Lluís
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Diagonal 645, Prevosti Building, 08028, Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Josefa Mallol
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Diagonal 645, Prevosti Building, 08028, Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Gemma Navarro
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Diagonal 645, Prevosti Building, 08028, Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Enric I Canela
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Diagonal 645, Prevosti Building, 08028, Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Antonio Cortés
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Diagonal 645, Prevosti Building, 08028, Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - José L Labandeira-García
- Laboratory of Neuroanatomy and Experimental Neurology, Department of Morphological Sciences, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), University of Santiago de Compostela, Santiago de Compostela, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Vicent Casadó
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Diagonal 645, Prevosti Building, 08028, Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - José L Lanciego
- Neuroscience Department, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Rafael Franco
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Diagonal 645, Prevosti Building, 08028, Barcelona, Spain.
- Neuroscience Department, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain.
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Olmedo M, Mezquita L, Earl J, Benito A, Santon A, Longo F, Vallejo C, MuÑoz G, Gorospe L, Soria A, Gordoa TA, Grande E, Roberts E, Gomez A, Cortez P, Alcalde R, Muñoz J, Cortés A, Carrato A, Garrido P. Monitoring Circulating Tumor Cells (Ctc) in Lung Cancer: Preliminary Results. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu326.81] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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Sandoval M, Hoyos P, Cortés A, Bavaro T, Terreni M, Hernáiz MJ. Development of regioselective deacylation of peracetylated β-d-monosaccharides using lipase from Pseudomonas stutzeri under sustainable conditions. RSC Adv 2014. [DOI: 10.1039/c4ra10401c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [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
An efficient deacylation of peracetylated pyranosides has been developed in different biosolvents, catalyzed by Pseudomonas stutzeri lipase, which displayed regiospecific activity towards the anomeric position.
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Affiliation(s)
- M. Sandoval
- Department of Pharmaceutical and Organic Chemistry
- Faculty of Pharmacy
- Complutense University of Madrid
- 30100 Madrid, Spain
| | - P. Hoyos
- Department of Pharmaceutical and Organic Chemistry
- Faculty of Pharmacy
- Complutense University of Madrid
- 30100 Madrid, Spain
| | - A. Cortés
- Unidad de Bioinformática. Centro de Biología Molecular “Severo Ochoa” (CBMSO)
- CSIC
- Universidad Autónoma de Madrid (UAM)
- Madrid, Spain
| | - T. Bavaro
- Department of Drug Sciences and Italian Biocatalysis Center
- University of Pavia
- 27100 Pavia, Italy
| | - M. Terreni
- Department of Drug Sciences and Italian Biocatalysis Center
- University of Pavia
- 27100 Pavia, Italy
| | - M. J. Hernáiz
- Department of Pharmaceutical and Organic Chemistry
- Faculty of Pharmacy
- Complutense University of Madrid
- 30100 Madrid, Spain
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Pena D, Londono J, Santos A, Bautista W, Romero-Sánchez C, Cortés A, Valle-Oñate R. SAT0266 Undifferentiated spondyloarthritis characterization of a group of colombian patients. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.3213] [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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Ferré S, Quiroz C, Orru M, Guitart X, Navarro G, Cortés A, Casadó V, Canela EI, Lluis C, Franco R. Adenosine A(2A) Receptors and A(2A) Receptor Heteromers as Key Players in Striatal Function. Front Neuroanat 2011; 5:36. [PMID: 21731559 PMCID: PMC3118889 DOI: 10.3389/fnana.2011.00036] [Citation(s) in RCA: 38] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Accepted: 06/08/2011] [Indexed: 11/24/2022] Open
Abstract
A very significant density of adenosine A2A receptors (A2ARs) is present in the striatum, where they are preferentially localized postsynaptically in striatopallidal medium spiny neurons (MSNs). In this localization A2ARs establish reciprocal antagonistic interactions with dopamine D2 receptors (D2Rs). In one type of interaction, A2AR and D2R are forming heteromers and, by means of an allosteric interaction, A2AR counteracts D2R-mediated inhibitory modulation of the effects of NMDA receptor stimulation in the striatopallidal neuron. This interaction is probably mostly responsible for the locomotor depressant and activating effects of A2AR agonist and antagonists, respectively. The second type of interaction involves A2AR and D2R that do not form heteromers and takes place at the level of adenylyl cyclase (AC). Due to a strong tonic effect of endogenous dopamine on striatal D2R, this interaction keeps A2AR from signaling through AC. However, under conditions of dopamine depletion or with blockade of D2R, A2AR-mediated AC activation is unleashed with an increased gene expression and activity of the striatopallidal neuron and with a consequent motor depression. This interaction is probably the main mechanism responsible for the locomotor depression induced by D2R antagonists. Finally, striatal A2ARs are also localized presynaptically, in cortico-striatal glutamatergic terminals that contact the striato-nigral MSN. These presynaptic A2ARs heteromerize with A1 receptors (A1Rs) and their activation facilitates glutamate release. These three different types of A2ARs can be pharmacologically dissected by their ability to bind ligands with different affinity and can therefore provide selective targets for drug development in different basal ganglia disorders.
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Affiliation(s)
- Sergi Ferré
- National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, U.S. Department of Health and Human Services Baltimore, MD, USA
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Gesteira A, Barros F, Martín A, Pérez V, Cortés A, Baiget M, Carracedo A. Pharmacogenetic studies on the antipsychotic treatment. Current status and perspectives. Actas Esp Psiquiatr 2010; 38:301-316. [PMID: 21117005] [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] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Accepted: 09/01/2010] [Indexed: 05/30/2023]
Abstract
Based on present knowledge, in this work we review the importance of the pharmacogenetic tests in the treatment with antipsychotic drugs. Many associations have been reported between different genetic markers and response to treatment as well as to the appearance of adverse reactions. However, up to now, no "prime" biomarker capable of unequivocally predicting the clinical benefits of a specific treatment or its toxicity has been identified. The use of individual pharmacogenetic markers has been demonstrated to have little clinical utility, and therefore the combination of information obtained from the analysis of different genes seems to be a more promising strategy. Inclusion of pharmacogenetic tests in clinical trials conducted prospectively and that include a large number of cases could, undoubtedly, significantly contribute to the development of individualized medicine protocols.
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Affiliation(s)
- A Gesteira
- Unidad de Medicina Molecular, Hospital Clínico Universitario, C/Choupana s/n 15706 Santiago de Compostela.
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Diaz GJ, Cortés A, Botero L. Evaluation of the ability of a feed additive to ameliorate the adverse effects of aflatoxins in turkey poults. Br Poult Sci 2009; 50:240-50. [PMID: 19373725 DOI: 10.1080/00071660902774566] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
1. A study was conducted to evaluate the possible protective effect of a feed additive containing aluminosilicate and phytogenic substances against the adverse effects of aflatoxins in turkey poults. 2. Dietary treatments (6) were given to turkey poults from d 1 to d 42 of age. From d 1 to 21 the dietary treatments were as follows: 1, negative control, no aflatoxins or feed additive added; 2, feed additive control, 1 kg/t feed additive, no aflatoxins; 3, 250 ppb (microg/kg) aflatoxins, no feed additive; 4, 250 ppb aflatoxins + 1 kg/t feed additive; 5, 500 ppb aflatoxins, no feed additive; and 6, 500 ppb aflatoxins + 1 kg/t feed additive. From d 22 to 42, the dietary concentration of the feed additive was increased from 1 to 2 kg/t in all treatment groups receiving the feed additive (2, 4 and 6), while keeping constant the dietary concentrations of aflatoxins. 3. Aflatoxins at 250 ppb did not cause adverse effects on performance but affected certain toxicopathological parameters. At 500 ppb, adverse effects on performance and several toxicological parameters were observed. 4. Some of the adverse affects were partially or completely overcome by supplementation with the feed additive, including amelioration of the performance parameters, suppression of mortality and correction of the immunological alterations induced by the exposure to the aflatoxins.
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Affiliation(s)
- G J Diaz
- Laboratorio de Toxicología, Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Bogota, Colombia.
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35
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Woolley IJ, Hutchinson P, Reeder JC, Kazura JW, Cortés A. Southeast Asian ovalocytosis is associated with increased expression of Duffy antigen receptor for chemokines (DARC). Immunohematology 2009; 25:63-66. [PMID: 19927622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The Duffy antigen receptor for chemokines (DARC or Fy glycoprotein) carries antigens that are important in blood transfusion and is the main receptor used by Plasmodium vivax to invade reticulocytes. Southeast Asian ovalocytosis (SAO) results from an alteration in RBC membrane protein band 3 and is thought to mitigate susceptibility to falciparum malaria. Expression of some RBC antigens is suppressed by SAO, and we hypothesized that SAO may also reduce Fy expression, potentiallyleading to reduced susceptibility to vivax malaria. Blood samples were collected from individuals living in the Madang Province of Papua New Guinea. Samples were assayed using a flow cytometry assay for expression of Fy on the surface of RBC and reticulocytes by measuring the attachment of a phycoerythrin-labeled Fy6 antibody. Reticulocytes were detected using thiazole orange. The presence of the SAO mutation was confirmed by PCR. There was a small (approximately 10%) but statistically significant (p=0.049, Mann-Whitney U test) increase in Fy expression on SAO RBC compared with RBC from individuals without this polymorphism: mean Fy expression (mean fluorescence intensity [MFI]) was 10.12 +/- 1.22 for SAO heterozygotes versus an MFI of 8.95 +/- 1.1 for individuals without SAO. For reticulocytes the MFI values were 27.61 +/- 19.12 for SAO heterozygotes and 16.47 +/- 3.81 for controls. SAO is associated with increased and not decreased Fy6 expression so that susceptibility to P. vivax infection is unlikely to be affected.
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MESH Headings
- Adolescent
- Adult
- Asia, Southeastern
- Disease Susceptibility
- Duffy Blood-Group System/genetics
- Duffy Blood-Group System/immunology
- Duffy Blood-Group System/metabolism
- Elliptocytosis, Hereditary/blood
- Elliptocytosis, Hereditary/complications
- Elliptocytosis, Hereditary/diagnosis
- Elliptocytosis, Hereditary/genetics
- Elliptocytosis, Hereditary/immunology
- Erythrocytes/immunology
- Erythrocytes/metabolism
- Erythrocytes/pathology
- Gene Expression Regulation
- Host-Pathogen Interactions
- Humans
- Malaria, Falciparum/blood
- Malaria, Falciparum/diagnosis
- Malaria, Falciparum/etiology
- Malaria, Falciparum/genetics
- Malaria, Falciparum/immunology
- Malaria, Vivax/blood
- Malaria, Vivax/diagnosis
- Malaria, Vivax/etiology
- Malaria, Vivax/genetics
- Malaria, Vivax/immunology
- Papua New Guinea
- Plasmodium falciparum/physiology
- Plasmodium vivax/physiology
- Polymorphism, Genetic
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/immunology
- Receptors, Cell Surface/metabolism
- Reticulocytes/immunology
- Reticulocytes/metabolism
- Reticulocytes/pathology
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Affiliation(s)
- I J Woolley
- Department of Infectious Diseases, Monash Medical Centre and Monash University, Clayton, Victoria, Australia
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Marcellino D, Ferré S, Casadó V, Cortés A, Le Foll B, Mazzola C, Drago F, Saur O, Stark H, Soriano A, Barnes C, Goldberg SR, Lluis C, Fuxe K, Franco R. Identification of dopamine D1-D3 receptor heteromers. Indications for a role of synergistic D1-D3 receptor interactions in the striatum. J Biol Chem 2008; 283:26016-25. [PMID: 18644790 DOI: 10.1074/jbc.m710349200] [Citation(s) in RCA: 186] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The function of dopamine D(3) receptors present in the striatum has remained elusive. In the present study evidence is provided for the existence of dopamine D(1)-D(3) receptor heteromers and for an intramembrane D(1)-D(3) receptor cross-talk in living cells and in the striatum. The formation of D(1)-D(3) receptor heteromers was demonstrated by fluorescence resonance energy transfer and bioluminescence resonance energy transfer techniques in transfected mammalian cells. In membrane preparations from these cells, a synergistic D(1)-D(3) intramembrane receptor-receptor interaction was observed, by which D(3) receptor stimulation enhances D(1) receptor agonist affinity, indicating that the D(1)-D(3) intramembrane receptor-receptor interaction is a biochemical characteristic of the D(1)-D(3) receptor heteromer. The same biochemical characteristic was also observed in membrane preparations from brain striatum, demonstrating the striatal co-localization and heteromerization of D(1) and D(3) receptors. According to the synergistic D(1)-D(3) intramembrane receptor-receptor interaction, experiments in reserpinized mice showed that D(3) receptor stimulation potentiates D(1) receptor-mediated behavioral effects by a different mechanism than D(2) receptor stimulation. The present study shows that a main functional significance of the D(3) receptor is to obtain a stronger dopaminergic response in the striatal neurons that co-express the two receptors.
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Affiliation(s)
- Daniel Marcellino
- Department of Neuroscience, Karolinska Institute, Stockholm 17177, Sweden
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Franco R, Casadó V, Cortés A, Pérez-Capote K, Mallol J, Canela E, Ferré S, Lluis C. Novel pharmacological targets based on receptor heteromers. ACTA ACUST UNITED AC 2008; 58:475-82. [PMID: 18620000 DOI: 10.1016/j.brainresrev.2008.06.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2008] [Revised: 06/11/2008] [Accepted: 06/12/2008] [Indexed: 12/24/2022]
Abstract
Studies performed in the last 10 years have provided solid evidence indicating that G-protein-coupled receptors are expressed on the plasma membrane as homo and heterodimers. The first consequence of this fact is that homo and heterodimers are the true targets of natural (hormones, neurotransmitters) and synthetic drugs. Furthermore a given receptor in a heteromer may display a different functional and/or pharmacological profile than the same receptor characterized as monomer or as homodimer. Recent evidence indicates that receptor heteromers are sensors that lead to a fine-tuning in neurotransmission or hormone regulation; mainly this is achieved by a modification of the signaling pathways activated via a given receptor when it is forming a given heteromer. Quite often antagonists display variable affinities when a given receptor is expressed with different heteromeric partners. This fact should be taken into account in the development of new drugs. Finally it should be pointed out that radioligand binding data has to be analyzed by a model that considers receptors as dimers and not as monomers. This model provides a novel approach to characterize drugs interacting with the orthosteric center (agonists/antagonists) or with allosteric centers (allosteric regulators).
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Affiliation(s)
- Rafael Franco
- Institut d'Investigació Biomèdica August Pi i Sunyer (IDIBAPS), Department of Biochemistry and Molecular Biology, University of Barcelona, Barcelona, Spain.
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38
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Ferrada C, Ferré S, Casadó V, Cortés A, Justinova Z, Barnes C, Canela EI, Goldberg SR, Leurs R, Lluis C, Franco R. Interactions between histamine H3 and dopamine D2 receptors and the implications for striatal function. Neuropharmacology 2008; 55:190-7. [PMID: 18547596 DOI: 10.1016/j.neuropharm.2008.05.008] [Citation(s) in RCA: 134] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2007] [Revised: 05/07/2008] [Accepted: 05/12/2008] [Indexed: 11/30/2022]
Abstract
The striatum contains a high density of histamine H(3) receptors, but their role in striatal function is poorly understood. Previous studies have demonstrated antagonistic interactions between striatal H(3) and dopamine D(1) receptors at the biochemical level, while contradictory results have been reported about interactions between striatal H(3) and dopamine D(2) receptors. In this study, by using reserpinized mice, we demonstrate the existence of behaviorally significant antagonistic postsynaptic interactions between H(3) and D(1) and also between H(3) and dopamine D(2) receptors. The selective H(3) receptor agonist imetit inhibited, while the H(3) receptor antagonist thioperamide potentiated locomotor activation induced by either the D(1) receptor agonist SKF 38393 or the D(2) receptor agonist quinpirole. High scores of locomotor activity were obtained with H(3) receptor blockade plus D(1) and D(2) receptor co-activation, i.e., when thioperamide was co-administered with both SKF 38393 and quinpirole. Radioligand binding experiments in striatal membrane preparations showed the existence of a strong and selective H(3)-D(2) receptor interaction at the membrane level. In agonist/antagonist competition experiments, stimulation of H(3) receptors with several H(3) receptor agonists significantly decreased the affinity of D(2) receptors for the agonist. This kind of intramembrane receptor-receptor interactions are a common biochemical property of receptor heteromers. In fact, by using Bioluminescence Resonance Energy Transfer techniques in co-transfected HEK-293 cells, H(3) (but not H(4)) receptors were found to form heteromers with D(2) receptors. This study demonstrates an important role of postsynaptic H(3) receptors in the modulation of dopaminergic transmission by means of a negative modulation of D(2) receptor function.
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Affiliation(s)
- Carla Ferrada
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, University of Barcelona, 08028 Barcelona, Spain
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Escrig J, Lavín R, Palma JL, Denardin JC, Altbir D, Cortés A, Gómez H. Geometry dependence of coercivity in Ni nanowire arrays. Nanotechnology 2008; 19:075713. [PMID: 21817661 DOI: 10.1088/0957-4484/19/7/075713] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Magnetic properties of arrays of nanowires produced inside the pores of anodic alumina membranes have been studied by means of vibrating sample magnetometer techniques. In these systems the length of the wires strongly influences the coercivity of the array. A simple model for the coercivity as a function of the geometry is presented which exhibits good agreement with experimental results. Magnetostatic interactions between the wires are responsible for a decrease of the coercive field.
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Affiliation(s)
- J Escrig
- Departamento de Física, Universidad de Santiago de Chile, USACH, Avenida Ecuador 3493, 917-0124 Santiago, Chile
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Franco R, Casadó V, Cortés A, Mallol J, Ciruela F, Ferré S, Lluis C, Canela EI. G-protein-coupled receptor heteromers: function and ligand pharmacology. Br J Pharmacol 2007; 153 Suppl 1:S90-8. [PMID: 18037920 DOI: 10.1038/sj.bjp.0707571] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Almost all existing models for G-protein-coupled receptors (GPCRs) are based on the occurrence of monomers. Recent studies show that many GPCRs are dimers. Therefore for some receptors dimers and not monomers are the main species interacting with hormones/neurotransmitters/drugs. There are reasons for equivocal interpretations of the data fitting to receptor dimers assuming they are monomers. Fitting data using a dimer-based model gives not only the equilibrium dissociation constants for high and low affinity binding to receptor dimers but also a 'cooperativity index' that reflects the molecular communication between monomers within the dimer. The dimer cooperativity index (D(C)) is a valuable tool that enables to interpret and quantify, for instance, the effect of allosteric regulators. For different receptors heteromerization confers a specific functional property for the receptor heteromer that can be considered as a 'dimer fingerprint'. The occurrence of heteromers with different pharmacological and signalling properties opens a complete new field to search for novel drug targets useful to combat a variety of diseases and potentially with fewer side effects. Antagonists, which are quite common marketed drugs targeting GPCRs, display variable affinities when a given receptor is expressed with different heteromeric partners. This fact should be taken into account in the development of new drugs.
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Affiliation(s)
- R Franco
- Departament de Bioquímica i Biologia Molecular, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Institut d'Investigació Biomèdica August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Barcelona, Spain.
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41
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Pascual JC, Soler J, Baiget M, Cortés A, Menoyo A, Barrachina J, Ropero M, Gomà M, Alvarez E, Perez V. Association between the serotonin transporter gene and personality traits in borderline personality disorder patients evaluated with Zuckerman-Zuhlman Personality Questionnaire (ZKPQ). Actas Esp Psiquiatr 2007; 35:382-386. [PMID: 18004675] [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] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
INTRODUCTION The serotoninergic system seems to be implicated in characteristic symptoms of borderline personality disorder (BPD) such as affective instability, impulsivity or suicide. Some studies suggest an association between serotonin transporter gene (5-HTT) polymorphisms and some BPD symptoms. Short allele (S) of the 5-HTTLPR polymorphism in the promoter region has been shown to be associated with impulsivity, aggressive behavior, anxiety and neuroticism. Of the variable number of tandem repeat (VNTR) polymorphism in intron 2, BPD patients showed higher frequencies of the allele with the 10 repeats. The aim of this study was to determine the association between 5- HTTLPR and VNTR polymorphism of 5-HTT and personality traits in borderline personality disorder. METHOD A total of 65 BPD patients diagnosed by means of semi-structured interviews SCID-II and DIB-R were included. Two common polymorphisms of 5-HTT were genotyped: the 5-HTTLPR in the promoter region and VNTR in intron 2. Personality traits were assessed by the Zuckerman-Kuhlman Personality Questionnaire (ZKPQ). RESULTS Patients with L allele (L/S or L/L) in the 5-HTTLPR polymorphism showed lower scores on the subscale of liking parties and friends. Patients with the allele with 10 repeat of the VNTR polymorphism, showed lower scores in impulsivity, sensation seeking and in the subscale liking of parties and friends. CONCLUSIONS The results suggest a significant association between the 5-HTT gene and some personality traits in BPD. This gene may play a role in the etiology of borderline personality disorder.
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Affiliation(s)
- J C Pascual
- Psychiatry Department, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona , Barcelona, Spain
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Ciruela F, Ferré S, Casadó V, Cortés A, Cunha RA, Lluis C, Franco R. Heterodimeric adenosine receptors: a device to regulate neurotransmitter release. Cell Mol Life Sci 2006; 63:2427-31. [PMID: 17058035 DOI: 10.1007/s00018-006-6216-2] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Since 1990 it has been known that dimers are the basic functional form of nearly all G-protein-coupled receptors (GPCRs) and that homo- and heterodimerization may play a key role in correct receptor maturation and trafficking to the plasma membrane. Nevertheless, homo- and heterodimerization of GPCR has become a matter of debate especially in the search for the precise physiological meaning of this phenomenon. This article focuses on how heterodimerization of adenosine A1 and A2A receptors, which are coupled to apparently opposite signalling pathways, allows adenosine to exert a fine-tuning modulation of striatal glutamatergic neurotransmission, providing a switch mechanism by which low and high concentrations of adenosine inhibit and stimulate, respectively, glutamate release.
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Affiliation(s)
- F Ciruela
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Avda Diagonal, 645, 08028, Barcelona, Spain.
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Ciruela F, Casadó V, Rodrigues RJ, Luján R, Burgueño J, Canals M, Borycz J, Rebola N, Goldberg SR, Mallol J, Cortés A, Canela EI, López-Giménez JF, Milligan G, Lluis C, Cunha RA, Ferré S, Franco R. Presynaptic control of striatal glutamatergic neurotransmission by adenosine A1-A2A receptor heteromers. J Neurosci 2006; 26:2080-7. [PMID: 16481441 PMCID: PMC6674939 DOI: 10.1523/jneurosci.3574-05.2006] [Citation(s) in RCA: 452] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The functional role of heteromers of G-protein-coupled receptors is a matter of debate. In the present study, we demonstrate that heteromerization of adenosine A1 receptors (A1Rs) and A2A receptors (A2ARs) allows adenosine to exert a fine-tuning modulation of glutamatergic neurotransmission. By means of coimmunoprecipitation, bioluminescence and time-resolved fluorescence resonance energy transfer techniques, we showed the existence of A1R-A2AR heteromers in the cell surface of cotransfected cells. Immunogold detection and coimmunoprecipitation experiments indicated that A1R and A2AR are colocalized in the same striatal glutamatergic nerve terminals. Radioligand-binding experiments in cotransfected cells and rat striatum showed that a main biochemical characteristic of the A1R-A2AR heteromer is the ability of A2AR activation to reduce the affinity of the A1R for agonists. This provides a switch mechanism by which low and high concentrations of adenosine inhibit and stimulate, respectively, glutamate release. Furthermore, it is also shown that A1R-A2AR heteromers constitute a unique target for caffeine and that chronic caffeine treatment leads to modifications in the function of the A1R-A2AR heteromer that could underlie the strong tolerance to the psychomotor effects of caffeine.
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Zapata A, Diez B, Cejalvo T, Gutiérrez-de Frías C, Cortés A. Ontogeny of the immune system of fish. Fish Shellfish Immunol 2006; 20:126-36. [PMID: 15939627 DOI: 10.1016/j.fsi.2004.09.005] [Citation(s) in RCA: 360] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2004] [Accepted: 09/03/2004] [Indexed: 05/02/2023]
Abstract
Information on the ontogeny of the fish immune system is largely restricted to a few species of teleosts (e.g., rainbow trout, catfish, zebrafish, sea bass) and has previously focused on morphological features. However, basic questions including the identification of the first lympho-hematopoietic sites, the origin of T- and B-lymphocytes and the acquisition of full immunological capacities remain to be resolved. We review these three main topics with special emphasis on recent results obtained from the zebrafish, a new experimental model particularly suitable for study of the ontogeny of the immune system because of its rapid development and easy manipulation. This species also provides an easy way of creating mutations that can be detected by various types of screens. In some teleosts (i.e., angelfish) the first blood cells are formed in the yolk sac. In others, such as zebrafish, the first hematopoietic site is an intraembryonic locus, the intermediate cell mass (ICM), whereas in both killifish and rainbow trout the first blood cells appear for a short time in the yolk sac but later the ICM becomes the main hematopoietic area. Erythrocytes and macrophages are the first blood cells to be identified in zebrafish embryos. They occur in the ICM, the duct of Cuvier and the peripheral circulation. Between 24 and 30 hour post-fertilization (hpf) at a temperature of 28 degrees C a few myeloblasts and myelocytes appear between the yolk sac and the body walls, and the ventral region of the tail of 1-2 day-old zebrafish also contains developing blood cells. The thymus, kidney and spleen are the major lymphoid organs of teleosts. The thymus is the first organ to become lymphoid, although earlier the kidney can contain hematopoietic precursors but not lymphocytes. In freshwater, but not in marine, teleosts the spleen is the last organ to acquire that condition. We and other authors have demonstrated an early expression of Rag-1 in the zebrafish thymus that correlates well with the morphological identification of lymphoid cells. On the other hand, the origins and time of appearance of B lymphocytes in teleosts are a matter of discussion and recent results are summarized here. The functioning rather than the mere morphological evidence of lymphocytes determines when the full immunocompetence in fish is attained. Information on the histogenesis of fish lymphoid organs can also be obtained by analysing zebrafish mutants with defects in the development of immune progenitors and/or in the maturation of non-lymphoid stromal elements of the lymphoid organs. The main characteristics of some of these mutants will also be described.
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Affiliation(s)
- A Zapata
- Department of Cell Biology, Faculty of Biology, Complutense University, 28040 Madrid, Spain.
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Ciruela F, Canela L, Burgueño J, Soriguera A, Cabello N, Canela EI, Casadó V, Cortés A, Mallol J, Woods AS, Ferré S, Lluis C, Franco R. Heptaspanning membrane receptors and cytoskeletal/scaffolding proteins: focus on adenosine, dopamine, and metabotropic glutamate receptor function. J Mol Neurosci 2005; 26:277-92. [PMID: 16012201 DOI: 10.1385/jmn:26:2-3:277] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Most cellular functions are mediated by multiprotein complexes. In neurons, these complexes are directly involved in the proper neuronal transmission, which is responsible for phenomena like learning, memory, and development. In recent years studies based on two-hybrid screens and proteomic, biochemical, and cell biology approaches have shown that intracellular domains of G protein-coupled receptors (GPCRs) or heptaspanning membrane receptors (HSMRs) interact with intracellular proteins. These interactions are the basis of a protein network associated with these receptors, which includes scaffolding proteins containing one or several PDZ (postsynaptic-density-95/discs-large/zona occludens-1) domains, signaling proteins, and proteins of the cytoskeleton. The present article is focused on the emerging evidence for interactions of adenosine, dopamine, and metabotropic glutamate receptors, with scaffolding and cytoskeletal proteins that play a role in the targeting and anchoring of these receptors to the plasma membrane, thus contributing to neuronal development and plasticity. Finally, given the complexity of neurological disorders such as ischemic stroke, Alzheimer's disease, and epilepsy, exploitation of these HSMR-associated interactions might prove to be efficient in the treatment of such disorders.
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Affiliation(s)
- Francisco Ciruela
- Departament de Bioquímica i Biologia Molecular, Universitat de Barcelona, 08028 Barcelona, Spain.
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Abstract
OBJECTIVES Hyperhomocysteinaemia is a well-known risk factor for venous thromboembolic disease (VTD). However, it is not clear whether homocysteine (Hc) itself or a related metabolite or a cofactor is primarily responsible for VTD. We carried out a case-control study to investigate whether vitamin concentrations that are involved in the Hc metabolism are associated or not with an elevated risk of VTD. DESIGN Case-control study. METHODS We measured serum vitamin B12, folate, creatinine and albumin concentrations and plasma Hc concentrations in 101 consecutive patients with VTD, diagnosed by image tests and 101 control subjects, matched for age and sex. RESULTS Serum vitamin B12 concentrations were significantly lower in VTD patients than in the control subjects. There were no differences in plasma Hc or serum folate concentrations between the groups. Among the male subgroup aged more than 70 years, serum vitamin B12 concentrations were significantly lower (240.88 +/- 103.07 vs. 421.20 +/- 314.31 pmol L(-1); P = 0.03) and plasma Hc concentrations were significantly higher (13.1 +/- 4.18 vs. 10.56 +/- 3.06 micromol L(-1); P =0.04) in VTD patients than in the control group. On multivariate analysis, in patients aged more than 70 years, serum vitamin B12 concentrations were independently associated with VTD. Compared with the highest quartile of vitamin B12 (>512.6 pmol L(-1)) the odds ratio (OR) for VTD in the lowest quartile (<230.9 pmol L(-1)) was 3.8 (95% CI 1.44-10.18; P = 0.01). In the VTD group, lowest vitamin B12 concentrations (percentile 10 <152.8 pmol L(-1)) were associated with the factor V Leiden mutation (OR = 6.07, 95% CI 0.93-38.55; P = 0.04). CONCLUSIONS Measuring vitamin B12 concentrations in elderly males may help in identifying people at risk of venous thromboembolism in our population.
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Affiliation(s)
- A M Díaz DE Tuesta
- Department of Internal Medicine, Virgen de al Luz Hospital, Cuenca, Spain
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Diaz G, Cortés A, Roldán L. Evaluation of the Efficacy of Four Feed Additives Against the Adverse Effects of T-2 Toxin in Growing Broiler Chickens. J APPL POULTRY RES 2005. [DOI: 10.1093/japr/14.2.226] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Franco R, Casadó V, Mallol J, Ferré S, Fuxe K, Cortés A, Ciruela F, Lluis C, Canela EI. Dimer-based model for heptaspanning membrane receptors. Trends Biochem Sci 2005; 30:360-6. [PMID: 15951182 DOI: 10.1016/j.tibs.2005.05.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2004] [Revised: 04/29/2005] [Accepted: 05/26/2005] [Indexed: 11/29/2022]
Abstract
The existence of intramembrane receptor-receptor interactions for heptaspanning membrane receptors is now fully accepted, but a model considering dimers as the basic unit that binds to two ligand molecules is lacking. Here, we propose a two-state-dimer model in which the ligand-induced conformational changes from one component of the dimer are communicated to the other. Our model predicts cooperativity in binding, which is relevant because the other current models fail to address this phenomenon satisfactorily. Our two-state-dimer model also predicts the variety of responses elicited by full or partial agonists, neutral antagonists and inverse agonists. This model can aid our understanding of the operation of heptaspanning receptors and receptor channels, and, potentially, be important for improving the treatment of cardiovascular, neurological and neuropsychyatric diseases.
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Affiliation(s)
- Rafael Franco
- Department Bioquímica i Biologia Molecular, Universitat de Barcelona, A. Diagonal, 645. 08028 Barcelona, Spain
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Perez-Espinosa A, Moral R, Moreno-Caselles J, Cortés A, Perez-Murcia MD, Gómez I. Co phytoavailability for tomato in amended calcareous soils. Bioresour Technol 2005; 96:649-655. [PMID: 15588767 DOI: 10.1016/j.biortech.2004.07.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/25/2004] [Accepted: 07/01/2004] [Indexed: 05/24/2023]
Abstract
A plot study was conducted to assess changes in Co phytoavailability for a tomato cultivar grown on an agricultural soil (a Calcic Petrocalcid) amended with sewage sludge, under controlled conditions in South-eastern Spain. The experiment consisted of three main treatment blocks: (A) without organic fertilisation, (B) with addition of 60 tha(-1) and (C) 120 tha(-1) of sewage sludge. For each block (A, B, and C), four levels of Co (0, 50, 100 and 200 mgkg(-1)) were added, as CoCl2. Diethylenetriaminepentaacetic acid, DTPA (0.005 M plus triethanolamine), ammonium acetate (1 N at pH 7), and water extractable fractions of the soils were analysed for all the plots. The time dependent Co accumulation in different parts (roots, stems, leaves, and fruits) of the tomato plants was studied. Soil Co seemed to be mainly in non-available forms, according to the low concentrations found in the water and ammonium acetate extracts, compared to DTPA. The gradient of Co accumulation in tomato plants was root > leaf > stem + branches > fruit, with a concentration in the edible parts ranging between 4 and 25 mg kg(-1). The organic amendment enhanced the plant extraction of Co, this effect being more significant with time. Plant extraction efficiency decreased with increasing Co concentration in the soils. Co in fruit showed the best correlation with all the Co extraction pools in the soil.
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Affiliation(s)
- A Perez-Espinosa
- Dpt. Agroquimica y Medio Ambiente, Universidad Miguel Hernández, EPS-Orihuela, E-03312 Orihuela-Alicante, Spain
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Diaz GJ, Roldán LP, Cortés A. Intoxication of Crotalaria pallida seeds to growing broiler chicks. Vet Hum Toxicol 2003; 45:187-9. [PMID: 12882487] [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] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
The adverse effects of feeding Crotalaria pallida (CP) seeds to chicks was investigated in a 21-day randomized trial of 4 dietary treatments (control, 1,2 and 3% ground CP seeds). Mortality rates in birds fed 0, 1, 2, and 3% dietary CP were 0, 2.1, 6.2, and 16.7%, respectively. Body weight gain and feed efficiency were adversely affected by all levels of inclusion of CP seeds, but feed intake was decreased only by dietary levels of 2 and 3%. Dietary CP of 2 and 3% increased the relative weight of lung, heart and spleen. Relative liver weight was increased by 2% dietary CP, but decreased by 3% CP. At day 14, serum GGT was increased by 2 and 3% dietary CP; serum ALT was significantly increased by 3% CP. No differences in ALT, AST or GGT were observed at day 21. Dietary levels equal to or greater than 1% CP are toxic for growing broiler chicks.
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Affiliation(s)
- G J Diaz
- Laboratorio de Toxicología, Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Bogotá DC, Colombia
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