1
|
Calzada-Fraile D, Iborra S, Ramírez-Huesca M, Jorge I, Dotta E, Hernández-García E, Martín-Cófreces N, Nistal-Villán E, Veiga E, Vázquez J, Pasqual G, Sánchez-Madrid F. Immune synapse formation promotes lipid peroxidation and MHC-I upregulation in licensed dendritic cells for efficient priming of CD8 + T cells. Nat Commun 2023; 14:6772. [PMID: 37880206 PMCID: PMC10600134 DOI: 10.1038/s41467-023-42480-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 10/12/2023] [Indexed: 10/27/2023] Open
Abstract
Antigen cognate dendritic cell (DC)-T cell synaptic interactions drive activation of T cells and instruct DCs. Upon receiving CD4+ T cell help, post-synaptic DCs (psDCs) are licensed to generate CD8+ T cell responses. However, the cellular and molecular mechanisms that enable psDCs licensing remain unclear. Here, we describe that antigen presentation induces an upregulation of MHC-I protein molecules and increased lipid peroxidation on psDCs in vitro and in vivo. We also show that these events mediate DC licensing. In addition, psDC adoptive transfer enhances pathogen-specific CD8+ T responses and protects mice from infection in a CD8+ T cell-dependent manner. Conversely, depletion of psDCs in vivo abrogates antigen-specific CD8+ T cell responses during immunization. Together, our data show that psDCs enable CD8+ T cell responses in vivo during vaccination and reveal crucial molecular events underlying psDC licensing.
Collapse
Affiliation(s)
| | - Salvador Iborra
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | | | - Inmaculada Jorge
- Centro Nacional de Investigaciones Cardiovasculares, 28029, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029, Madrid, Spain
| | - Enrico Dotta
- Laboratory of Synthetic Immunology, Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | - Elena Hernández-García
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Noa Martín-Cófreces
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029, Madrid, Spain
- Dynamic Video Microscopy Unit, Immunology Department, Instituto de Investigación Sanitaria Hospital Universitario La Princesa, Universidad Autónoma de Madrid, 28006, Madrid, Spain
| | - Estanislao Nistal-Villán
- Microbiology Section, Departamento CC, Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU San Pablo, Boadilla del Monte, 28668, Madrid, Spain
| | - Esteban Veiga
- Department of Molecular & Cellular Biology, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain
| | - Jesús Vázquez
- Centro Nacional de Investigaciones Cardiovasculares, 28029, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029, Madrid, Spain
| | - Giulia Pasqual
- Laboratory of Synthetic Immunology, Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
- Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - Francisco Sánchez-Madrid
- Centro Nacional de Investigaciones Cardiovasculares, 28029, Madrid, Spain.
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029, Madrid, Spain.
- Immunology Department, Instituto de Investigación Sanitaria Hospital Universitario La Princesa, Universidad Autónoma de Madrid, 28006, Madrid, Spain.
| |
Collapse
|
2
|
Cela C, Roa-Bautista A, Méndez-Pérez A, Ávila-Nieto C, Garcia-Calvo E, Hernández-García E. The first year of young group of the Spanish immunology society: Progress, challenges, and next steps. Eur J Immunol 2023; 53:e2350491. [PMID: 37116120 DOI: 10.1002/eji.202350491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/10/2023] [Accepted: 04/12/2023] [Indexed: 04/30/2023]
Affiliation(s)
- Carmela Cela
- Immune System Development and Function Unit, Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas (CSIC), Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | | | - Almudena Méndez-Pérez
- Nutrition and Food Science Department School of Veterinary Medicine Complutense, Universidad Complutense de Madrid, Madrid, Spain
| | - Carlos Ávila-Nieto
- IrsiCaixa AIDS Research Institute, Germans Trias I Pujol Research Institute (IGTP), Can Ruti Campus, Badalona, Spain
| | - Eduardo Garcia-Calvo
- Department of Molecular & Cellular Biology, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain
| | - Elena Hernández-García
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| |
Collapse
|
3
|
Redondo-Urzainqui A, Hernández-García E, Cook ECL, Iborra S. Dendritic cells in energy balance regulation. Immunol Lett 2023; 253:19-27. [PMID: 36586424 DOI: 10.1016/j.imlet.2022.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/21/2022] [Accepted: 12/26/2022] [Indexed: 12/30/2022]
Abstract
Besides their well-known role in initiating adaptive immune responses, several groups have studied the role of dendritic cells (DCs) in the context of chronic metabolic inflammation, such as in diet-induced obesity (DIO) or metabolic-associated fatty liver disease. DCs also have an important function in maintaining metabolic tissue homeostasis in steady-state conditions. In this review, we will briefly describe the different DC subsets, the murine models available to assess their function, and discuss the role of DCs in regulating energy balance and maintaining tissue homeostasis.
Collapse
Affiliation(s)
- Ana Redondo-Urzainqui
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, 28040, Spain
| | - Elena Hernández-García
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, 28040, Spain
| | - Emma Clare Laura Cook
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, 28040, Spain.
| | - Salvador Iborra
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, 28040, Spain.
| |
Collapse
|
4
|
Ginés-Gallego C, Hernández-García E, Domingo-Gordo B, Gómez-de-Liaño R. Abducens and Trochlear Nerve Palsies After COVID-19 Vaccination: Report of Two Cases. J Pediatr Ophthalmol Strabismus 2022; 59:e50-e53. [PMID: 36149925 DOI: 10.3928/01913913-20220617-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The authors report two cases of an abducens palsy and a trochlear nerve palsy, respectively, in two patients who received a coronavirus disease 2019 (COVID-19) vaccine 2 weeks previously. Given the lack of other symptoms, normal test results, and spontaneous resolution of the diplopia, a likely association with the COVID-19 vaccine was suggested. [J Pediatr Ophthalmol Strabismus. 2022;59(5):e50-e53.].
Collapse
|
5
|
Llorente-La Orden C, Hernández-García E, Díaz-Isabel E, Burgos-Blasco B, Morales-Fernández L, Merino-Sanz P, Gómez de Liaño-Sánchez R. Reliability and agreement analysis among 5 subjective methods of ocular torsion measurement. Arch Soc Esp Oftalmol (Engl Ed) 2022; 97:450-456. [PMID: 35660357 DOI: 10.1016/j.oftale.2021.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 12/31/2021] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To evaluate the reliability in the measurement of ocular torsion and the agreement of the following subjective methods: double Maddox test, synoptophore, Gracis torsionometer, Harms screen and Awaya cyclodeviation test. METHOD Patients with vertical strabismus acquired in adulthood were recruited and ocular torsion was measured with the 5 methods described on three occasions. As a gold standard test does not exist, the one that obtained the best repeatability data was chosen as the reference test. RESULTS 25 patients were included in the study. The repeatability of each test was studied: double Maddox test (ICC = 0.783, CV = 29.33%), synoptophore (ICC = 0.976, CV = 6.71%), Gracis torsionometer (ICC = 0.937, CV = 20.10%), Harms screen (ICC = 0.962, CV = 11.86%) and Awaya test (ICC = 0.987, CV = 52.58%). The reference test to compare the agreement was the synoptophore. Statistically significant differences were found when comparing the ocular torsion ranges between the synoptophore and the Gracis torsionometer (p = 0.008) and between the synoptophore and the Awaya test (p = 0.02). CONCLUSIONS The double Maddox test, the synoptophore, the Gracis torsionometer, and the Harms screen are reliable methods with good reproducibility indices. Among them, the synoptophore is the most consistent method. The Awaya test did not show good reliability. The bilateral Maddox test, the Gracis torsionometer, and the Harms screen were methods with good agreement with the synoptophore, which was determined as the reference test. The Awaya test did not show good agreement with the synoptophore.
Collapse
Affiliation(s)
- C Llorente-La Orden
- Departamento de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Madrid, Spain.
| | - E Hernández-García
- Departamento de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Madrid, Spain
| | | | - B Burgos-Blasco
- Departamento de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Madrid, Spain
| | - L Morales-Fernández
- Departamento de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Madrid, Spain
| | - P Merino-Sanz
- Sección de Motilidad Ocular, Departamento de Oftalmología, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - R Gómez de Liaño-Sánchez
- Departamento de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Madrid, Spain; Centro Oftalmológico Gómez de Liaño, Madrid, Spain
| |
Collapse
|
6
|
Cueto FJ, Del Fresno C, Brandi P, Combes AJ, Hernández-García E, Sánchez-Paulete AR, Enamorado M, Bromley CP, Gomez MJ, Conde-Garrosa R, Mañes S, Zelenay S, Melero I, Iborra S, Krummel MF, Sancho D. DNGR-1 limits Flt3L-mediated antitumor immunity by restraining tumor-infiltrating type I conventional dendritic cells. J Immunother Cancer 2021; 9:e002054. [PMID: 33980589 PMCID: PMC8118081 DOI: 10.1136/jitc-2020-002054] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2021] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Conventional type 1 dendritic cells (cDC1s) are central to antitumor immunity and their presence in the tumor microenvironment associates with improved outcomes in patients with cancer. DNGR-1 (CLEC9A) is a dead cell-sensing receptor highly restricted to cDC1s. DNGR-1 has been involved in both cross-presentation of dead cell-associated antigens and processes of disease tolerance, but its role in antitumor immunity has not been clarified yet. METHODS B16 and MC38 tumor cell lines were inoculated subcutaneously into wild-type (WT) and DNGR-1-deficient mice. To overexpress Flt3L systemically, we performed gene therapy through the hydrodynamic injection of an Flt3L-encoding plasmid. To characterize the immune response, we performed flow cytometry and RNA-Seq of tumor-infiltrating cDC1s. RESULTS Here, we found that cross-presentation of tumor antigens in the steady state was DNGR-1-independent. However, on Flt3L systemic overexpression, tumor growth was delayed in DNGR-1-deficient mice compared with WT mice. Of note, this protection was recapitulated by anti-DNGR-1-blocking antibodies in mice following Flt3L gene therapy. This improved antitumor immunity was associated with Batf3-dependent enhanced accumulation of CD8+ T cells and cDC1s within tumors. Mechanistically, the deficiency in DNGR-1 boosted an Flt3L-induced specific inflammatory gene signature in cDC1s, including Ccl5 expression. Indeed, the increased infiltration of cDC1s within tumors and their protective effect rely on CCL5/CCR5 chemoattraction. Moreover, FLT3LG and CCL5 or CCR5 gene expression signatures correlate with an enhanced cDC1 signature and a favorable overall survival in patients with cancer. Notably, cyclophosphamide elevated serum Flt3L levels and, in combination with the absence of DNGR-1, synergized against tumor growth. CONCLUSION DNGR-1 limits the accumulation of tumor-infiltrating cDC1s promoted by Flt3L. Thus, DNGR-1 blockade may improve antitumor immunity in tumor therapy settings associated to high Flt3L expression.
Collapse
MESH Headings
- Animals
- Basic-Leucine Zipper Transcription Factors/genetics
- Basic-Leucine Zipper Transcription Factors/metabolism
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- Cell Line, Tumor
- Chemokine CCL5/genetics
- Chemokine CCL5/metabolism
- Coculture Techniques
- Colonic Neoplasms/genetics
- Colonic Neoplasms/immunology
- Colonic Neoplasms/metabolism
- Colonic Neoplasms/therapy
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Gene Expression Regulation, Neoplastic
- Genetic Therapy
- Lectins, C-Type/genetics
- Lectins, C-Type/metabolism
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Melanoma, Experimental/genetics
- Melanoma, Experimental/immunology
- Melanoma, Experimental/metabolism
- Melanoma, Experimental/therapy
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Mice, Inbred C57BL
- Mice, Knockout
- Phenotype
- Receptors, CCR5/genetics
- Receptors, CCR5/metabolism
- Receptors, Immunologic/genetics
- Receptors, Immunologic/metabolism
- Repressor Proteins/genetics
- Repressor Proteins/metabolism
- Signal Transduction
- Skin Neoplasms/genetics
- Skin Neoplasms/immunology
- Skin Neoplasms/metabolism
- Skin Neoplasms/therapy
- Tumor Burden
- Tumor Escape
- Tumor Microenvironment
- Mice
Collapse
Affiliation(s)
- Francisco J Cueto
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Carlos Del Fresno
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
- Hospital la Paz Institute for Health Research (IdiPAZ), Madrid, Spain
| | - Paola Brandi
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Alexis J Combes
- Department of Pathology, University of California, San Francisco, California, USA
- ImmunoX Initiative, University of California, San Francisco, California, USA
- UCSF CoLabs, University of California, San Francisco, California, USA
| | - Elena Hernández-García
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Alfonso R Sánchez-Paulete
- Division of Immunology and Immunotherapy, Center for Applied Medical Research, University of Navarra, Pamplona, Spain
| | - Michel Enamorado
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
- Metaorganism Immunity Section, Laboratory of Host Immunity and Microbiome, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Christian P Bromley
- Cancer Inflammation and Immunity Group, CRUK Manchester Institute, The University of Manchester, Manchester, UK
| | - Manuel J Gomez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Ruth Conde-Garrosa
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Santos Mañes
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, Darwin, Madrid, Spain
| | - Santiago Zelenay
- Cancer Inflammation and Immunity Group, CRUK Manchester Institute, The University of Manchester, Manchester, UK
| | - Ignacio Melero
- Division of Immunology and Immunotherapy, Center for Applied Medical Research, University of Navarra, Pamplona, Spain
- Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain
- University Clinic, University of Navarra, Pamplona, Spain
- Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain
| | - Salvador Iborra
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Matthew F Krummel
- Department of Pathology, University of California, San Francisco, California, USA
| | - David Sancho
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| |
Collapse
|
7
|
Soto M, Ramírez L, Solana JC, Cook ECL, Hernández-García E, Charro-Zanca S, Redondo-Urzainqui A, Reguera RM, Balaña-Fouce R, Iborra S. Resistance to Experimental Visceral Leishmaniasis in Mice Infected With Leishmania infantum Requires Batf3. Front Immunol 2020; 11:590934. [PMID: 33362772 PMCID: PMC7758202 DOI: 10.3389/fimmu.2020.590934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 11/09/2020] [Indexed: 12/20/2022] Open
Abstract
Unveiling the protective immune response to visceral leishmaniasis is critical for a rational design of vaccines aimed at reducing the impact caused by this fatal, if left untreated, vector-borne disease. In this study we sought to determine the role of the basic leucine zipper transcription factor ATF-like 3 (Batf3) in the evolution of infection with Leishmania infantum, the causative agent of human visceral leishmaniasis in the Mediterranean Basin and Latin America. For that, Batf3-deficient mice in C57BL/6 background were infected with an L. infantum strain expressing the luciferase gene. Bioluminescent imaging, as well as in vitro parasite titration, demonstrated that Batf3-deficient mice were unable to control hepatic parasitosis as opposed to wild-type C57BL/6 mice. The impaired microbicide capacities of L. infantum-infected macrophages from Batf3-deficient mice mainly correlated with a reduction of parasite-specific IFN-γ production. Our results reinforce the implication of Batf3 in the generation of type 1 immunity against infectious diseases.
Collapse
Affiliation(s)
- Manuel Soto
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Departamento de Biología Molecular, Nicolás Cabrera 1, Universidad Autónoma de Madrid, Madrid, Spain
| | - Laura Ramírez
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Departamento de Biología Molecular, Nicolás Cabrera 1, Universidad Autónoma de Madrid, Madrid, Spain
| | - José Carlos Solana
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Departamento de Biología Molecular, Nicolás Cabrera 1, Universidad Autónoma de Madrid, Madrid, Spain
| | - Emma C L Cook
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Elena Hernández-García
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Sara Charro-Zanca
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Ana Redondo-Urzainqui
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Rosa M Reguera
- Departamento de Ciencias Biomédicas, Universidad de León, León, Spain
| | | | - Salvador Iborra
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| |
Collapse
|
8
|
Khouili SC, Cook ECL, Hernández-García E, Martínez-López M, Conde-Garrosa R, Iborra S. SHP-1 Regulates Antigen Cross-Presentation and Is Exploited by Leishmania to Evade Immunity. Cell Rep 2020; 33:108468. [PMID: 33264612 DOI: 10.1016/j.celrep.2020.108468] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 10/15/2020] [Accepted: 11/10/2020] [Indexed: 12/12/2022] Open
Abstract
Intracellular pathogens have evolved strategies to evade detection by cytotoxic CD8+ T lymphocytes (CTLs). Here, we ask whether Leishmania parasites trigger the SHP-1-FcRγ chain inhibitory axis to dampen antigen cross-presentation in dendritic cells expressing the C-type lectin receptor Mincle. We find increased cross-priming of CTLs in Leishmania-infected mice deficient for Mincle or with a selective loss of SHP-1 in CD11c+ cells. The latter also shows improved cross-presentation of cell-associated viral antigens. CTL activation in vitro reveals increased MHC class I-peptide complex expression in Mincle- or SHP-1-deficient CD11c+ cells. Neuraminidase treatment also boosts cross-presentation, suggesting that Leishmania triggers SHP-1-associated sialic-acid-binding receptors. Mechanistically, enhanced antigen processing correlates with reduced endosomal acidification in the absence of SHP-1. Finally, we demonstrate that SHP-1 inhibition improves CD11c+ cell-based vaccination against the parasite. Thus, SHP-1-mediated impairment of cross-presentation can be exploited by pathogens to evade CTLs, and SHP-1 inhibition improves CTL responses during vaccination.
Collapse
Affiliation(s)
- Sofía C Khouili
- Immunobiology Lab, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
| | - Emma C L Cook
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, 12 de Octubre Health Research Institute (imas12), Madrid, Spain
| | - Elena Hernández-García
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, 12 de Octubre Health Research Institute (imas12), Madrid, Spain
| | - María Martínez-López
- Champalimaud Research, Champalimaud Centre for the Unknown, Av. Brasília, 1400-038 Lisboa, Portugal
| | - Ruth Conde-Garrosa
- Immunobiology Lab, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
| | - Salvador Iborra
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, 12 de Octubre Health Research Institute (imas12), Madrid, Spain.
| |
Collapse
|
9
|
Llorente-La-Orden C, Burgos-Blasco B, Domingo-Gordo B, Hernández-García E, Gómez-de-Liaño R. Blue Cone Monochromatism: A Case Report with Opsoclonus and Light Exposure. J Pediatr Genet 2020; 11:151-153. [DOI: 10.1055/s-0040-1716332] [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: 06/03/2020] [Accepted: 07/23/2020] [Indexed: 10/23/2022]
Abstract
AbstractBlue cone monochromatism (BCM) is a rare X-linked congenital vision disorder that is characterized by a cone dysfunction. We present a case of a 3-year-old boy referred to our department with abnormal eye movements since birth, impaired vision, and difficulties in distinguishing colors. A tendency to stare at the sun was noted. Examination revealed severe loss of visual acuity, high myopia, and opsoclonus. A mutation screening of OPN1LW/OPN1MW gene cluster was performed showing a nucleotide substitution encoding a Cys203Arg (C203R) missense mutation. The diagnosis of BCM in this case was clear and the patient harbored the most frequent genetic alteration. Opsoclonus and continued voluntary light exposure are novel features that have not been previously reported in BCM.
Collapse
Affiliation(s)
- Carlos Llorente-La-Orden
- Servicio de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Bárbara Burgos-Blasco
- Servicio de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Blanca Domingo-Gordo
- Servicio de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Elena Hernández-García
- Servicio de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Rosario Gómez-de-Liaño
- Servicio de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| |
Collapse
|
10
|
Pascual-Prieto J, Benito-Pascual B, Hernández-García E, Domingo-Gordo B, Gómez-de-Liaño R. Oculomotor nerve palsy in herpes zoster ophthalmicus: Presentation of 4 cases. Arch Soc Esp Oftalmol (Engl Ed) 2020; 95:404-407. [PMID: 32505385 DOI: 10.1016/j.oftal.2020.04.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/07/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
Varicella zoster virus (VZV) infection has a high prevalence worldwide. Within the multiple ophthalmologic manifestations that VZV can cause, sudden diplopia is among them. A review is presented of four clinical cases of 3rd and 4th oculomotor nerve palsies in herpes zoster ophthalmicus. A review is also presented of the physiopathology and most important clinical manifestations. Imaging tests are essential in order to rule out complications. Systemic antiviral administration is the correct treatment.
Collapse
Affiliation(s)
- J Pascual-Prieto
- Servicio de Oftalmología, Hospital Clínico San Carlos, Madrid, España.
| | - B Benito-Pascual
- Servicio de Oftalmología, Hospital Clínico San Carlos, Madrid, España
| | | | - B Domingo-Gordo
- Servicio de Oftalmología, Hospital Clínico San Carlos, Madrid, España
| | - R Gómez-de-Liaño
- Servicio de Oftalmología, Hospital Clínico San Carlos, Madrid, España
| |
Collapse
|
11
|
Burgos-Blasco B, Hernández-García E, Morales Fernández L, Gómez-de-Liaño R. Satisfaction with strabismus surgery based on the opinion of expert surgeons. ACTA ACUST UNITED AC 2020; 96:19-25. [PMID: 32709474 DOI: 10.1016/j.oftal.2020.05.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/23/2020] [Accepted: 05/25/2020] [Indexed: 11/29/2022]
Abstract
PURPOSE To assess the perception of strabismus surgeons in Spain regarding patient satisfaction after surgery, by analysing the types of strabismus with the most satisfied patients, as well as the causes of dissatisfaction. METHODS A survey was carried out among the members of the Spanish Strabology Society who were over 50 years of age, active in Spain, with more than 20 years of surgical experience, and whose main surgical activity was strabismus. The questionnaire consisted of 18 questions about the perception of patient satisfaction according to the type of strabismus, patient age, as well as the most frequent cause of dissatisfaction after surgery. RESULTS The questionnaires were completed by a total of 29 surgeons, with a mean of 31 years of surgical experience. The most frequent cause of perceived dissatisfaction was residual strabismus. No differences were found in the satisfaction index between children and adults. The surgery that was considered to produce greater satisfaction was endotropia, followed by decompensated 4th nerve palsy, and exotropia, while 3rd nerve palsy was the cause of the most dissatisfaction. CONCLUSIONS According to strabismus surgeons, endotropia is the most satisfactory surgery for the patient, followed by exotropia, vertical strabismus, and traumatic paralysis of the 4th cranial nerve.
Collapse
Affiliation(s)
- B Burgos-Blasco
- Servicio de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, España.
| | - E Hernández-García
- Servicio de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, España
| | - L Morales Fernández
- Servicio de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, España
| | - R Gómez-de-Liaño
- Servicio de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigaciones Oftalmológicas Ramón Castroviejo, Departamento de Inmunología, Oftalmología y ORL, Facultad de Medicina, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, España
| |
Collapse
|
12
|
Molero-Senosiain M, Domingo-Gordo B, Fernández Cabrera C, Hernández-García E, Gómez de Liaño R. Neuro-ophthalmological manifestations as complication of an infection with Mycoplasma pneumoniae and subsequent development of disseminated acute encephalitis. Archivos de la Sociedad Española de Oftalmología (English Edition) 2020. [PMCID: PMC7167296 DOI: 10.1016/j.oftale.2020.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
13
|
Solana JC, Ramírez L, Cook ECL, Hernández-García E, Sacristán S, Martín ME, Manuel González V, Reguera RM, Balaña-Fouce R, Fresno M, Requena JM, Iborra S, Soto M. Subcutaneous Immunization of Leishmania HSP70-II Null Mutant Line Reduces the Severity of the Experimental Visceral Leishmaniasis in BALB/c Mice. Vaccines (Basel) 2020; 8:vaccines8010141. [PMID: 32210040 PMCID: PMC7157689 DOI: 10.3390/vaccines8010141] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/20/2020] [Accepted: 03/21/2020] [Indexed: 02/05/2023] Open
Abstract
Leishmania infantum parasites cause a severe form of visceral leishmaniasis in human and viscerocutaneous leishmaniasis in dogs. Recently, we reported that immunization with an attenuated L. infantum cell line, lacking the hsp70-II gene, protects against the development of murine cutaneous leishmaniasis. In this work, we analyzed the vaccine potential of this cell line towards the long-term protection against murine visceral leishmaniasis. This model shows an organ-dependent evolution of the disease. The infection can resolve in the liver but chronically affect spleen and bone marrow. Twelve weeks after subcutaneous administration of attenuated L. infantum, Bagg Albino (BALB/c) mice were challenged with infective L. infantum parasites expressing the luciferase-encoding gene. Combining in vivo bioimaging techniques with limiting dilution experiments, we report that, in the initial phase of the disease, vaccinated animals presented lower parasite loads than unvaccinated animals. A reduction of the severity of liver damage was also detected. Protection was associated with the induction of rapid parasite-specific IFN-γ production by CD4+ and CD8+ T cells. However, the vaccine was unable to control the chronic phase of the disease, since we did not find differences in the parasite burdens nor in the immune response at that time point.
Collapse
Affiliation(s)
- José Carlos Solana
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Departamento de Biología Molecular, Nicolás Cabrera 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- WHO Collaborating Centre for Leishmaniasis, National Centre for Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain
| | - Laura Ramírez
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Departamento de Biología Molecular, Nicolás Cabrera 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Emma C. L. Cook
- Department of Immunology, Ophthalmology and ENT. Complutense University School of Medicine and 12 de Octubre Health Research Institute (imas12), 28040 Madrid, Spain
| | - Elena Hernández-García
- Department of Immunology, Ophthalmology and ENT. Complutense University School of Medicine and 12 de Octubre Health Research Institute (imas12), 28040 Madrid, Spain
| | - Silvia Sacristán
- Departamento de Bioquímica-Investigación, Hospital Ramón y Cajal (IRYCIS), 28034 Madrid, Spain
| | - M. Elena Martín
- Departamento de Bioquímica-Investigación, Hospital Ramón y Cajal (IRYCIS), 28034 Madrid, Spain
| | - Víctor Manuel González
- Departamento de Bioquímica-Investigación, Hospital Ramón y Cajal (IRYCIS), 28034 Madrid, Spain
| | - Rosa María Reguera
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - Rafael Balaña-Fouce
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - Manuel Fresno
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Departamento de Biología Molecular, Nicolás Cabrera 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - José María Requena
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Departamento de Biología Molecular, Nicolás Cabrera 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Salvador Iborra
- Department of Immunology, Ophthalmology and ENT. Complutense University School of Medicine and 12 de Octubre Health Research Institute (imas12), 28040 Madrid, Spain
- Correspondence: (S.I.); (M.S.); Tel.: +34-91-394-7220 (S.I.); +34-91-196-4647 (M.S.)
| | - Manuel Soto
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Departamento de Biología Molecular, Nicolás Cabrera 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Correspondence: (S.I.); (M.S.); Tel.: +34-91-394-7220 (S.I.); +34-91-196-4647 (M.S.)
| |
Collapse
|
14
|
Torres-Sánchez MJ, Hernández-García E, Gómez-Sánchez J, Palomares-Bayo M, Peña-Ortega M, Galindo-Sacristán P, De Gracia-Guindo C, Osuna-Ortega A. Severe Scedosporium apiospermum Infection in a Recent Renal Transplant Recipient: Case Report. Transplant Proc 2018; 50:683-684. [PMID: 29579888 DOI: 10.1016/j.transproceed.2017.09.051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 09/21/2017] [Indexed: 10/17/2022]
Abstract
Infections in transplanted patients are still an important cause of morbidity and mortality. Among them, fungal infections with pathogens have become increasingly more prevalent in the last decade. We report the clinical course and management of disseminated Scedosporium apiospermum infection in a kidney transplant recipient, with microbiological isolation of the fungus in cerebrospinal fluid culture. S apiospermum is a fungus that is distributed worldwide and can be grown from soil samples or stagnant water. Disseminated infection is the most frequent form of infection, with cerebral involvement in most cases, which leads to a very high mortality (around 75%). Post-transplant renal infections require a thorough evaluation. Specifically, a high suspicion index is necessary, considering Scedosporium infection among the differential diagnosis of invasive fungal diseases in renal transplantation patients. It is essential to confirm the microbiological diagnosis for an adequate diagnosis and treatment.
Collapse
Affiliation(s)
- M J Torres-Sánchez
- Nephrology Department, University Hospital Virgen de las Nieves, Granada, Spain.
| | - E Hernández-García
- Nephrology Department, University Hospital Virgen de las Nieves, Granada, Spain
| | - J Gómez-Sánchez
- Department of Surgery, University Hospital of Granada, Granada, Spain
| | - M Palomares-Bayo
- Nephrology Department, University Hospital Virgen de las Nieves, Granada, Spain
| | - M Peña-Ortega
- Nephrology Department, University Hospital Virgen de las Nieves, Granada, Spain
| | - P Galindo-Sacristán
- Nephrology Department, University Hospital Virgen de las Nieves, Granada, Spain
| | - C De Gracia-Guindo
- Nephrology Department, University Hospital Virgen de las Nieves, Granada, Spain
| | - A Osuna-Ortega
- Nephrology Department, University Hospital Virgen de las Nieves, Granada, Spain
| |
Collapse
|
15
|
Hernández-García E, Gómez-De-Liaño-Sánchez R. [Use of botulinum toxin in a patient with pendular congenital nystagmus]. Arch Soc Esp Oftalmol 2012; 87:330-332. [PMID: 23021231 DOI: 10.1016/j.oftal.2012.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Accepted: 06/18/2010] [Indexed: 06/01/2023]
Abstract
CASE REPORT We report the case of a 5 month-old male diagnosed with congenital nystagmus and oculocutaneous albinism. The initial examination showed pendular horizontal nystagmus with high amplitude and without blocking position or foveal fixation periods. A 2.5 IU injection of botulinum toxin was administered in the horizontal rectus muscles of both eyes in two sessions separated by 6 weeks. This led to a decrease in amplitude of nystagmus and early development of binocular visual acuity of 4.8cycles/cm. CONCLUSION Faced with diagnosis of horizontal nystagmus in the early stages of development, and in order to avoid periods of foveal fixation, the use of botulinum toxin leads to a temporary reduction in its amplitude and an improvement in visual acuity with low complication rates. Given the possibility of spontaneous improvement described in these patients, studies are needed with longer follow-up to establish the advantage of long term treatment.
Collapse
Affiliation(s)
- E Hernández-García
- Universidad Complutense de Madrid, Hospital Clínico San Carlos, Madrid, España
| | | |
Collapse
|
16
|
Abstract
Population dynamics of individuals undergoing birth and death and diffusing by short- or long-range two-dimensional spatial excursions (Gaussian jumps or Lévy flights) is studied. Competitive interactions are considered in a global case, in which birth and death rates are influenced by all individuals in the system, and in a nonlocal but finite-range case in which interaction affects individuals in a neighborhood (we also address the noninteracting case). In the global case one single or few-cluster configurations are achieved with the spatial distribution of the bugs tied to the type of diffusion. In the Lévy case long tails appear for some properties characterizing the shape and dynamics of clusters. Under nonlocal finite-range interactions periodic patterns appear with periodicity set by the interaction range. This length acts as a cutoff limiting the influence of the long Lévy jumps, so that spatial configurations under the two types of diffusion become more similar. By dividing initially everyone into different families and following their descent it is possible to show that mixing of families and their competition is greatly influenced by the spatial dynamics.
Collapse
Affiliation(s)
- E Heinsalu
- IFISC, Instituto de Física Interdisciplinar y Sistemas Complejos (CSIC-UIB), Campus Universitat de les Illes Balears, E-07122 Palma de Mallorca, Spain
| | | | | |
Collapse
|
17
|
Komin N, Murza AC, Hernández-García E, Toral R. Synchronization and entrainment of coupled circadian oscillators. Interface Focus 2011; 1:167-76. [PMID: 22419982 PMCID: PMC3262239 DOI: 10.1098/rsfs.2010.0327] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2010] [Accepted: 09/20/2010] [Indexed: 11/12/2022] Open
Abstract
Circadian rhythms in mammals are controlled by the neurons located in the suprachiasmatic nucleus of the hypothalamus. In physiological conditions, the system of neurons is very efficiently entrained by the 24 h light-dark cycle. Most of the studies carried out so far emphasize the crucial role of the periodicity imposed by the light-dark cycle in neuronal synchronization. Nevertheless, heterogeneity as a natural and permanent ingredient of these cellular interactions seemingly plays a major role in these biochemical processes. In this paper, we use a model that considers the neurons of the suprachiasmatic nucleus as chemically coupled modified Goodwin oscillators, and introduce non-negligible heterogeneity in the periods of all neurons in the form of quenched noise. The system response to the light-dark cycle periodicity is studied as a function of the interneuronal coupling strength, external forcing amplitude and neuronal heterogeneity. Our results indicate that the right amount of heterogeneity helps the extended system to respond globally in a more coherent way to the external forcing. Our proposed mechanism for neuronal synchronization under external periodic forcing is based on heterogeneity-induced oscillator death, damped oscillators being more entrainable by the external forcing than the self-oscillating neurons with different periods.
Collapse
Affiliation(s)
| | | | | | - R. Toral
- IFISC (Instituto de Física Interdisciplinar y Sistemas Complejos), CSIC-UIB, Campus UIB, 07122 Palma de Mallorca, Spain
| |
Collapse
|
18
|
Masucci AP, Kalampokis A, Eguíluz VM, Hernández-García E. Extracting directed information flow networks: an application to genetics and semantics. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 83:026103. [PMID: 21405885 DOI: 10.1103/physreve.83.026103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 11/25/2010] [Indexed: 05/30/2023]
Abstract
We introduce a general method to infer the directional information flow between populations whose elements are described by n-dimensional vectors of symbolic attributes. The method is based on the Jensen-Shannon divergence and on the Shannon entropy and has a wide range of application. We show here the results of two applications: first we extract the network of genetic flow between meadows of the seagrass Poseidonia oceanica, where the meadow elements are specified by sets of microsatellite markers, and then we extract the semantic flow network from a set of Wikipedia pages, showing the semantic channels between different areas of knowledge.
Collapse
Affiliation(s)
- A P Masucci
- Instituto de Física Interdisciplinar y Sistemas Complejos IFISC (CSIC-UIB), E-07122 Palma de Mallorca, Spain
| | | | | | | |
Collapse
|
19
|
Zaldívar J, Bacelar F, Dueri S, Marinov D, Viaroli P, Hernández-García E. Modeling approach to regime shifts of primary production in shallow coastal ecosystems. Ecol Modell 2009. [DOI: 10.1016/j.ecolmodel.2009.01.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
20
|
Sendiña-Nadal I, Pérez-Muñuzuri V, Eguíluz VM, Hernández-García E, Piro O. Quasiperiodic patterns in boundary-modulated excitable waves. Phys Rev E Stat Nonlin Soft Matter Phys 2001; 64:046208. [PMID: 11690126 DOI: 10.1103/physreve.64.046208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2000] [Indexed: 05/23/2023]
Abstract
We investigate the impact of domain shape on wave propagation in excitable media. Channeled domains with sinusoidal boundaries are considered. Trains of fronts generated periodically at an extreme of the channel are found to adopt a quasiperiodic spatial configuration that repeats periodically in time. The phenomenon is numerically studied in a model for a photosensitive Belousov-Zabotinsky reaction. Spatial return maps for the height and position of the successive fronts are analytically obtained, and reveal the similarity between this spatial quasiperiodicity and the temporal quasiperiodicity appearing in forced oscillators.
Collapse
Affiliation(s)
- I Sendiña-Nadal
- Grupo de Física non Lineal, Universidade de Santiago de Compostela, E-15706 Santiago de Compostela, Spain
| | | | | | | | | |
Collapse
|
21
|
Eguíluz VM, Hernández-García E, Piro O. Complex Ginzburg-Landau equation in the presence of walls and corners. Phys Rev E Stat Nonlin Soft Matter Phys 2001; 64:036205. [PMID: 11580420 DOI: 10.1103/physreve.64.036205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2000] [Revised: 05/10/2001] [Indexed: 05/23/2023]
Abstract
We investigate the influence of walls and corners (with Dirichlet and Neumann boundary conditions) in the evolution of two-dimensional autooscillating fields described by the complex Ginzburg-Landau equation. Analytical solutions are found, and arguments provided, to show that Dirichlet walls introduce strong selection mechanisms for the wave pattern. Corners between walls provide additional synchronization mechanisms and associated selection criteria. The numerical results fit well with the theoretical predictions in the parameter range studied.
Collapse
Affiliation(s)
- V M Eguíluz
- Center for Chaos and Turbulence Studies, The Niels Bohr Institute, Blegdamsvej 17, DK2100 Copenhagen Ø, Denmark.
| | | | | |
Collapse
|
22
|
Abstract
A technique to forecast spatiotemporal time series is presented. It uses a proper orthogonal or Karhunen-Loève decomposition to encode large spatiotemporal data sets in a few time series, and genetic algorithms to efficiently extract dynamical rules from the data. The method works very well for confined systems displaying spatiotemporal chaos, as exemplified here by forecasting the evolution of the one-dimensional complex Ginzburg-Landau equation in a finite domain.
Collapse
Affiliation(s)
- C López
- Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-Universitat de les Illes Balears), 07071 Palma de Mallorca, Spain
| | | | | |
Collapse
|
23
|
Eguíluz VM, Hernández-García E, Piro O, Balle S. Frozen spatial chaos induced by boundaries. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1999; 60:6571-9. [PMID: 11970576 DOI: 10.1103/physreve.60.6571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/1999] [Indexed: 04/18/2023]
Abstract
We show that rather simple but nontrivial boundary conditions could induce the appearance of spatial chaos (that is stationary, stable, but spatially disordered configurations) in extended dynamical systems with very simple dynamics. We exemplify the phenomenon with a nonlinear reaction-diffusion equation in a two-dimensional undulated domain. Concepts from the theory of dynamical systems, and a transverse-single-mode approximation are used to describe the spatially chaotic structures.
Collapse
Affiliation(s)
- V M Eguíluz
- Instituto Mediterráneo de Estudios Avanzados IMEDEA (CSIC-UIB) E-07071 Palma de Mallorca, Spain.
| | | | | | | |
Collapse
|
24
|
Montagne R, Hernández-García E. Winding Number Instability in the Phase-Turbulence Regime of the Complex Ginzburg-Landau Equation. Phys Rev Lett 1996; 77:267-270. [PMID: 10062408 DOI: 10.1103/physrevlett.77.267] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
25
|
Amengual A, Walgraef D, Hernández-García E. Wave-unlocking transition in resonantly coupled complex Ginzburg-Landau equations. Phys Rev Lett 1996; 76:1956-1959. [PMID: 10060563 DOI: 10.1103/physrevlett.76.1956] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
26
|
Montagne R, Amengual A, Hernández-García E. Multiple front propagation into unstable states. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1994; 50:377-385. [PMID: 9961977 DOI: 10.1103/physreve.50.377] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
27
|
Graham I, Hernández-García E, Grant M. Damage spreading during domain growth. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1994; 49:R4763-R4766. [PMID: 9961930 DOI: 10.1103/physreve.49.r4763] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
28
|
Pury PA, Cáceres MO, Hernández-García E. First-passage time and the fluctuation of the quenched disorder in biased media. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1994; 49:R967-R970. [PMID: 9961410 DOI: 10.1103/physreve.49.r967] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
29
|
|
30
|
Amengual A, Hernández-García E. Ordering and finite-size effects in the dynamics of one-dimensional transient patterns. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1993; 47:4151-4160. [PMID: 9960492 DOI: 10.1103/physreve.47.4151] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
31
|
Hernández-García E, Rodríguez MA, Pesquera L. Transport properties for random walks in disordered one-dimensional media: Perturbative calculation around the effective-medium approximation. Phys Rev B Condens Matter 1990; 42:10653-10672. [PMID: 9995325 DOI: 10.1103/physrevb.42.10653] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
32
|
|
33
|
Aguado M, Hernández-García E. Dye-laser fluctuations: Comparison of colored loss-noise and white gain-noise models. Phys Rev A Gen Phys 1988; 38:5670-5677. [PMID: 9900306 DOI: 10.1103/physreva.38.5670] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|