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Gonzalez-Perez M, Baranda J, Berges-Buxeda MJ, Conde P, Pérez-Olmeda M, Lozano-Ojalvo D, Cámara C, Del Rosario Llópez-Carratalá M, Gonzalez-Parra E, Portolés P, Ortiz A, Portoles J, Ochando J. Maintenance of Potent Cellular and Humoral Immune Responses in Long-Term Hemodialysis Patients after 1273-mRNA SARS-CoV-2 Vaccination. Pharmaceuticals (Basel) 2023; 16:ph16040574. [PMID: 37111331 PMCID: PMC10141011 DOI: 10.3390/ph16040574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/27/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Continuous evaluation of the coronavirus disease 2019 (COVID-19) vaccine effectiveness in hemodialysis (HD) patients is critical in this immunocompromised patient group with higher mortality rates due to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. The response towards vaccination in HD patients has been studied weeks after their first and second SARS-CoV-2 vaccination dose administration, but no further studies have been developed in a long-term manner, especially including both the humoral and cellular immune response. Longitudinal studies that monitor the immune response to COVID-19 vaccination in individuals undergoing HD are therefore necessary to prioritize vaccination strategies and minimize the pathogenic effects of SARS-CoV-2 in this high-risk group of patients. We followed up HD patients and healthy volunteers (HV) and monitored their humoral and cellular immune response three months after the second (V2+3M) and after the third vaccination dose (V3+3M), taking into consideration previous COVID-19 infections. Our cellular immunity results show that, while HD patients and HV individuals secrete comparable levels of IFN-γ and IL-2 in ex vivo stimulated whole blood at V2+3M in both naïve and COVID-19-recovered individuals, HD patients secrete higher levels of IFN-γ and IL-2 than HV at V3+3M. This is mainly due to a decay in the cellular immune response in HV individuals after the third dose. In contrast, our humoral immunity results show similar IgG binding antibody units (BAU) between HD patients and HV individuals at V3+3M, independently of their previous infection status. Overall, our results indicate that HD patients maintain strong cellular and humoral immune responses after repeated 1273-mRNA SARS-CoV-2 vaccinations over time. The data also highlights significant differences between cellular and humoral immunity after SARS-CoV-2 vaccination, which emphasizes the importance of monitoring both arms of the immune response in the immunocompromised population.
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Affiliation(s)
- Maria Gonzalez-Perez
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, 28220 Madrid, Spain
| | - Jana Baranda
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, 28220 Madrid, Spain
- Department of Pharmaceutical and Health Sciences, CEU San Pablo University, 28668 Madrid, Spain
| | | | - Patricia Conde
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, 28220 Madrid, Spain
| | - Mayte Pérez-Olmeda
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, 28220 Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), 28029 Madrid, Spain
| | - Daniel Lozano-Ojalvo
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Carmen Cámara
- Department of Immunology, Hospital La Paz, 28046 Madrid, Spain
| | | | | | - Pilar Portolés
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, 28220 Madrid, Spain
- Presidencia, Consejo Superior de Investigaciones Científicas (CSIC), 28006 Madrid, Spain
| | - Alberto Ortiz
- Department of Nephrology IIS-Fundación Jimenez Díaz, 28040 Madrid, Spain
| | - Jose Portoles
- Department of Nephrology, IDIPHIM Hospital Puerta de Hierro, 28220 Madrid, Spain
| | - Jordi Ochando
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, 28220 Madrid, Spain
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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2
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Schwarz M, Torre D, Lozano-Ojalvo D, Tan AT, Tabaglio T, Mzoughi S, Sanchez-Tarjuelo R, Le Bert N, Lim JME, Hatem S, Tuballes K, Camara C, Lopez-Granados E, Paz-Artal E, Correa-Rocha R, Ortiz A, Lopez-Hoyos M, Portoles J, Cervera I, Gonzalez-Perez M, Bodega-Mayor I, Conde P, Oteo-Iglesias J, Borobia AM, Carcas AJ, Frías J, Belda-Iniesta C, Ho JSY, Nunez K, Hekmaty S, Mohammed K, Marsiglia WM, Carreño JM, Dar AC, Berin C, Nicoletti G, Della Noce I, Colombo L, Lapucci C, Santoro G, Ferrari M, Nie K, Patel M, Barcessat V, Gnjatic S, Harris J, Sebra R, Merad M, Krammer F, Kim-Schulze S, Marazzi I, Bertoletti A, Ochando J, Guccione E. Rapid, scalable assessment of SARS-CoV-2 cellular immunity by whole-blood PCR. Nat Biotechnol 2022; 40:1680-1689. [PMID: 35697804 PMCID: PMC10603792 DOI: 10.1038/s41587-022-01347-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [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] [Received: 05/25/2021] [Accepted: 05/02/2022] [Indexed: 12/30/2022]
Abstract
Fast, high-throughput methods for measuring the level and duration of protective immune responses to SARS-CoV-2 are needed to anticipate the risk of breakthrough infections. Here we report the development of two quantitative PCR assays for SARS-CoV-2-specific T cell activation. The assays are rapid, internally normalized and probe-based: qTACT requires RNA extraction and dqTACT avoids sample preparation steps. Both assays rely on the quantification of CXCL10 messenger RNA, a chemokine whose expression is strongly correlated with activation of antigen-specific T cells. On restimulation of whole-blood cells with SARS-CoV-2 viral antigens, viral-specific T cells secrete IFN-γ, which stimulates monocytes to produce CXCL10. CXCL10 mRNA can thus serve as a proxy to quantify cellular immunity. Our assays may allow large-scale monitoring of the magnitude and duration of functional T cell immunity to SARS-CoV-2, thus helping to prioritize revaccination strategies in vulnerable populations.
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Affiliation(s)
- Megan Schwarz
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Therapeutics Discovery, Department of Oncological Sciences and Pharmacological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Denis Torre
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Therapeutics Discovery, Department of Oncological Sciences and Pharmacological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Daniel Lozano-Ojalvo
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Anthony T Tan
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore
| | - Tommaso Tabaglio
- Institute of Molecular and Cell Biology, IMCB, A*STAR, Singapore, Singapore
| | - Slim Mzoughi
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Therapeutics Discovery, Department of Oncological Sciences and Pharmacological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rodrigo Sanchez-Tarjuelo
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- National Center for Microbiology, Carlos III Health Institute, Madrid, Spain
| | - Nina Le Bert
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore
| | - Joey Ming Er Lim
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore
| | - Sandra Hatem
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kevin Tuballes
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Carmen Camara
- Department of Immunology, University Hospital La Paz-IdiPAZ, Madrid, Spain
| | | | - Estela Paz-Artal
- Department of Immunology, Research Institution, Sanitaria Hospital, Madrid, Spain
- Department of Immunology, Ophthalmology and ENT, Complutense University of Madrid, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Carlos III Health Institute, Madrid, Spain
| | - Rafael Correa-Rocha
- Laboratory of Immune-Regulation, Research Institute Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - Alberto Ortiz
- Department of Nephrology, IIS-Fundación Jimenez Díaz, Madrid, Spain
| | - Marcos Lopez-Hoyos
- Department of Immunology, Hospital University of Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - Jose Portoles
- Department of Nephrology, Hospital of Puerta de Hierro, Madrid, Spain
| | - Isabel Cervera
- National Center for Microbiology, Carlos III Health Institute, Madrid, Spain
| | | | - Irene Bodega-Mayor
- National Center for Microbiology, Carlos III Health Institute, Madrid, Spain
| | - Patricia Conde
- National Center for Microbiology, Carlos III Health Institute, Madrid, Spain
| | - Jesús Oteo-Iglesias
- National Center for Microbiology, Carlos III Health Institute, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Carlos III Health Institute, Madrid, Spain
| | - Alberto M Borobia
- Clinical Pharmacology, University Hospital La Paz-IDIPAZ, Platform of Clinical Research Units and Clinical Trials, Spain Faculty of Medicine Autonomous University of Madrid, Madrid, Spain
| | - Antonio J Carcas
- Clinical Pharmacology, University Hospital La Paz-IDIPAZ, Platform of Clinical Research Units and Clinical Trials, Spain Faculty of Medicine Autonomous University of Madrid, Madrid, Spain
| | - Jesús Frías
- Clinical Pharmacology, University Hospital La Paz-IDIPAZ, Platform of Clinical Research Units and Clinical Trials, Spain Faculty of Medicine Autonomous University of Madrid, Madrid, Spain
| | | | - Jessica S Y Ho
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kemuel Nunez
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Therapeutics Discovery, Department of Oncological Sciences and Pharmacological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Saboor Hekmaty
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kevin Mohammed
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - William M Marsiglia
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Juan Manuel Carreño
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Arvin C Dar
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Therapeutics Discovery, Department of Oncological Sciences and Pharmacological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Cecilia Berin
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | | | | | | | | | - Kai Nie
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Human Immune Monitoring Core, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Manishkumar Patel
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Human Immune Monitoring Core, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Vanessa Barcessat
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sacha Gnjatic
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Human Immune Monitoring Core, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jocelyn Harris
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Human Immune Monitoring Core, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Robert Sebra
- Department of Genetics and Genomics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Icahn Institute of Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Sema4, a Mount Sinai venture, Stamford, CT, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Miriam Merad
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Human Immune Monitoring Core, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Florian Krammer
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Seunghee Kim-Schulze
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Human Immune Monitoring Core, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ivan Marazzi
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Antonio Bertoletti
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.
| | - Jordi Ochando
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- National Center for Microbiology, Carlos III Health Institute, Madrid, Spain.
| | - Ernesto Guccione
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Center for Therapeutics Discovery, Department of Oncological Sciences and Pharmacological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Bioinformatics for Next Generation Sequencing (BiNGS) Shared Resource Facility, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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3
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García-Pérez J, González-Pérez M, Castillo de la Osa M, Borobia AM, Castaño L, Bertrán MJ, Campins M, Portolés A, Lora D, Bermejo M, Conde P, Hernández-Gutierrez L, Carcas A, Arana-Arri E, Tortajada M, Fuentes I, Ascaso A, García-Morales MT, Erick de la Torre-Tarazona H, Arribas JR, Imaz-Ayo N, Mellado-Pau E, Agustí A, Pérez-Ingidua C, Gómez de la Cámara A, Ochando J, Belda-Iniesta C, Frías J, Alcamí J, Pérez-Olmeda M. Immunogenic dynamics and SARS-CoV-2 variant neutralisation of the heterologous ChAdOx1-S/BNT162b2 vaccination: Secondary analysis of the randomised CombiVacS study. EClinicalMedicine 2022; 50:101529. [PMID: 35795713 PMCID: PMC9249304 DOI: 10.1016/j.eclinm.2022.101529] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 06/06/2022] [Accepted: 06/06/2022] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND The CombiVacS study was designed to assess immunogenicity and reactogenicity of the heterologous ChAdOx1-S/BNT162b2 combination, and 14-day results showed a strong immune response. The present secondary analysis addresses the evolution of humoral and cellular response up to day 180. METHODS Between April 24 and 30, 2021, 676 adults primed with ChAdOx1-S were enrolled in five hospitals in Spain, and randomised to receive BNT162b2 as second dose (interventional group [IG]) or no vaccine (control group [CG]). Individuals from CG received BNT162b2 as second dose and also on day 28, as planned based on favourable results on day 14. Humoral immunogenicity, measured by immunoassay for SARS-CoV-2 receptor binding domain (RBD), antibody functionality using pseudovirus neutralisation assays for the reference (G614), Alpha, Beta, Delta, and Omicron variants, as well as cellular immune response using interferon-γ and IL-2 immunoassays were assessed at day 28 after BNT162b2 in both groups, at day 90 (planned only in the interventional group) and at day 180 (laboratory data cut-off on Nov 19, 2021). This study was registered with EudraCT (2021-001978-37) and ClinicalTrials.gov (NCT04860739). FINDINGS In this secondary analysis, 664 individuals (441 from IG and 223 from CG) were included. At day 28 post vaccine, geometric mean titres (GMT) of RBD antibodies were 5616·91 BAU/mL (95% CI 5296·49-5956·71) in the IG and 7298·22 BAU/mL (6739·41-7903·37) in the CG (p < 0·0001). RBD antibodies titres decreased at day 180 (1142·0 BAU/mL [1048·69-1243·62] and 1836·4 BAU/mL [1621·62-2079·62] in the IG and CG, respectively; p < 0·0001). Neutralising antibodies also waned from day 28 to day 180 in both the IG (1429·01 [1220·37-1673·33] and 198·72 [161·54-244·47], respectively) and the CG (1503·28 [1210·71-1866·54] and 295·57 [209·84-416·33], respectively). The lowest variant-specific response was observed against Omicron-and Beta variants, with low proportion of individuals exhibiting specific neutralising antibody titres (NT50) >1:100 at day 180 (19% and 22%, respectively). INTERPRETATION Titres of RBD antibodies decay over time, similar to homologous regimes. Our findings suggested that delaying administration of the second dose did not have a detrimental effect after vaccination and may have improved the response obtained. Lower neutralisation was observed against Omicron and Beta variants at day 180. FUNDING Funded by Instituto de Salud Carlos III (ISCIII).
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Affiliation(s)
- Javier García-Pérez
- Unidad de Inmunopatología del SIDA, Centro Nacional de Microbiología, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - María González-Pérez
- Laboratorio de Referencia en Inmunología, Centro Nacional de Microbiología, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - María Castillo de la Osa
- Laboratorio de Serología, Centro Nacional de Microbiología, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Alberto M. Borobia
- Servicio de Farmacología Clínica, Departamento de Farmacología y Terapéutica, Facultad de Medicina, Hospital Universitario La Paz, IdiPAZ, Universidad Autónoma de Madrid, Madrid, Spain
| | - Luis Castaño
- Biocruces Bizkaia, Hospital Universitario Cruces, CIBERDEM, CIBERER, Endo-ERN, UPV-EHU, Barakaldo, Spain
| | - María Jesús Bertrán
- Servicio de Medicina Preventiva y Epidemiologia, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Magdalena Campins
- Servicio de Medicina Preventiva y Epidemiología, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Antonio Portolés
- Servicio de Farmacología Clínica, Hospital Clínico San Carlos, IdISSC, Madrid, Spain
- Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense de Madrid (UCM), Madrid, Spain
- Spanish Clinical Research Network – SCReN – ISCIII, Madrid, Spain
| | - David Lora
- Instituto de Investigación Sanitaria Hospital 12 de octubre (imas12), Facultad de Medicina, Universidad Complutense de Madrid (UCM)
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Spanish Clinical Research Network – SCReN – ISCIII, Madrid, Spain
- Facultad de Estudios Estadísticos, Universidad Complutense de Madrid (UCM), Madrid, Spain
| | - Mercedes Bermejo
- Unidad de Inmunopatología del SIDA, Centro Nacional de Microbiología, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Patricia Conde
- Laboratorio de Referencia en Inmunología, Centro Nacional de Microbiología, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Lourdes Hernández-Gutierrez
- Laboratorio de Serología, Centro Nacional de Microbiología, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Antonio Carcas
- Servicio de Farmacología Clínica, Departamento de Farmacología y Terapéutica, Facultad de Medicina, Hospital Universitario La Paz, IdiPAZ, Universidad Autónoma de Madrid, Madrid, Spain
| | - Eunate Arana-Arri
- Biocruces Bizkaia, Hospital Universitario Cruces, CIBERDEM, CIBERER, Endo-ERN, UPV-EHU, Barakaldo, Spain
| | - Marta Tortajada
- Servicio de Prevención de Riesgos Laborales, Salud Laboral, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Inmaculada Fuentes
- Unidad de Soporte a la Investigación Clínica, Vall d'Hebron Institut de Recerca, Barcelona, Spain
| | - Ana Ascaso
- Servicio de Farmacología Clínica, Hospital Clínico San Carlos, IdISSC, Madrid, Spain
| | - María Teresa García-Morales
- Instituto de Investigación Sanitaria Hospital 12 de octubre (imas12), Facultad de Medicina, Universidad Complutense de Madrid (UCM)
- Spanish Clinical Research Network – SCReN – ISCIII, Madrid, Spain
| | | | - José-Ramón Arribas
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Servicio de Medicina Interna, Departamento de Medicina, Facultad de Medicina, Hospital Universitario La Paz, IdiPAZ, Universidad Autónoma de Madrid, Madrid, Spain
| | - Natale Imaz-Ayo
- Biocruces Bizkaia, Hospital Universitario Cruces, CIBERDEM, CIBERER, Endo-ERN, UPV-EHU, Barakaldo, Spain
| | - Eugènia Mellado-Pau
- Servicio de Medicina Preventiva y Epidemiologia, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Antonia Agustí
- Servicio de Farmacología Clínica, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Departament de Farmacologia, Terapèutica i Toxicologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Carla Pérez-Ingidua
- Servicio de Farmacología Clínica, Hospital Clínico San Carlos, IdISSC, Madrid, Spain
| | - Agustín Gómez de la Cámara
- Instituto de Investigación Sanitaria Hospital 12 de octubre (imas12), Facultad de Medicina, Universidad Complutense de Madrid (UCM)
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Facultad de Medicina, Universidad Complutense de Madrid (UCM), Madrid, Spain
- Spanish Clinical Research Network – SCReN – ISCIII, Madrid, Spain
| | - Jordi Ochando
- Laboratorio de Referencia en Inmunología, Centro Nacional de Microbiología, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | | | - Jesús Frías
- Servicio de Farmacología Clínica, Departamento de Farmacología y Terapéutica, Facultad de Medicina, Hospital Universitario La Paz, IdiPAZ, Universidad Autónoma de Madrid, Madrid, Spain
| | - José Alcamí
- Unidad de Inmunopatología del SIDA, Centro Nacional de Microbiología, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Corresponding author at: Unidad de Inmunopatología del SIDA Instituto de Salud Carlos III, 28220 Majadahonda, Spain.
| | - Mayte Pérez-Olmeda
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Laboratorio de Serología, Centro Nacional de Microbiología, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Corresponding author at: Laboratorio de Serología, Instituto de salud Carlos III, 28220 Majadahonda, Spain.
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4
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Matcham F, Carr E, White KM, Leightley D, Lamers F, Siddi S, Annas P, de Girolamo G, Haro JM, Horsfall M, Ivan A, Lavelle G, Li Q, Lombardini F, Mohr DC, Narayan VA, Penninx BWHJ, Oetzmann C, Coromina M, Simblett SK, Weyer J, Wykes T, Zorbas S, Brasen JC, Myin-Germeys I, Conde P, Dobson RJB, Folarin AA, Ranjan Y, Rashid Z, Cummins N, Dineley J, Vairavan S, Hotopf M. Predictors of engagement with remote sensing technologies for symptom measurement in Major Depressive Disorder. J Affect Disord 2022; 310:106-115. [PMID: 35525507 DOI: 10.1016/j.jad.2022.05.005] [Citation(s) in RCA: 4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/28/2022] [Accepted: 05/02/2022] [Indexed: 01/10/2023]
Abstract
BACKGROUND Remote sensing for the measurement and management of long-term conditions such as Major Depressive Disorder (MDD) is becoming more prevalent. User-engagement is essential to yield any benefits. We tested three hypotheses examining associations between clinical characteristics, perceptions of remote sensing, and objective user engagement metrics. METHODS The Remote Assessment of Disease and Relapse - Major Depressive Disorder (RADAR-MDD) study is a multicentre longitudinal observational cohort study in people with recurrent MDD. Participants wore a FitBit and completed app-based assessments every two weeks for a median of 18 months. Multivariable random effects regression models pooling data across timepoints were used to examine associations between variables. RESULTS A total of 547 participants (87.8% of the total sample) were included in the current analysis. Higher levels of anxiety were associated with lower levels of perceived technology ease of use; increased functional disability was associated with small differences in perceptions of technology usefulness and usability. Participants who reported higher system ease of use, usefulness, and acceptability subsequently completed more app-based questionnaires and tended to wear their FitBit activity tracker for longer. All effect sizes were small and unlikely to be of practical significance. LIMITATIONS Symptoms of depression, anxiety, functional disability, and perceptions of system usability are measured at the same time. These therefore represent cross-sectional associations rather than predictions of future perceptions. CONCLUSIONS These findings suggest that perceived usability and actual use of remote measurement technologies in people with MDD are robust across differences in severity of depression, anxiety, and functional impairment.
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Affiliation(s)
- F Matcham
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.
| | - E Carr
- Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - K M White
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - D Leightley
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - F Lamers
- Department of Psychiatry and Amsterdam Public Health Research Institute, Amsterdam UMC, Vrije Universiteit, Amsterdam, the Netherlands
| | - S Siddi
- Parc Sanitari Sant Joan de Déu, Fundació San Joan de Déu, CIBERSAM, Universitat de Barcelona, Barcelona, Spain
| | - P Annas
- H. Lundbeck A/S, Valby, Denmark
| | - G de Girolamo
- IRCCS Instituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - J M Haro
- Parc Sanitari Sant Joan de Déu, Fundació San Joan de Déu, CIBERSAM, Universitat de Barcelona, Barcelona, Spain
| | - M Horsfall
- Department of Psychiatry and Amsterdam Public Health Research Institute, Amsterdam UMC, Vrije Universiteit, Amsterdam, the Netherlands
| | - A Ivan
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - G Lavelle
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Q Li
- Janssen Research and Development, LLC, Titusville, NJ, USA
| | - F Lombardini
- Parc Sanitari Sant Joan de Déu, Fundació San Joan de Déu, CIBERSAM, Universitat de Barcelona, Barcelona, Spain
| | - D C Mohr
- Center for Behavioral Intervention Technologies, Department of Preventative Medicine, Northwestern University, Chicago, IL, USA
| | - V A Narayan
- Janssen Research and Development, LLC, Titusville, NJ, USA
| | - B W H J Penninx
- Department of Psychiatry and Amsterdam Public Health Research Institute, Amsterdam UMC, Vrije Universiteit, Amsterdam, the Netherlands
| | - C Oetzmann
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - M Coromina
- Parc Sanitari Joan de Déu, Barcelona, Spain
| | - S K Simblett
- Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - J Weyer
- RADAR-CNS Patient Advisory Board
| | - T Wykes
- Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK; South London and Maudsley NHS Foundation Trust, London, UK
| | - S Zorbas
- RADAR-CNS Patient Advisory Board
| | | | - I Myin-Germeys
- Department for Neurosciences, Center for Contextual Psychiatry, KU Leuven, Leuven, Belgium
| | - P Conde
- Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - R J B Dobson
- Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - A A Folarin
- Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Y Ranjan
- Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Z Rashid
- Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - N Cummins
- Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - J Dineley
- Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK; EIHW - Chair of Embedded Intelligence for Health Care and Wellbeing, University of Augsburg, Augsburg, Germany
| | - S Vairavan
- Janssen Research and Development, LLC, Titusville, NJ, USA
| | - M Hotopf
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK; South London and Maudsley NHS Foundation Trust, London, UK
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5
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Matcham F, Leightley D, Siddi S, Lamers F, White K, Annas P, De Girolamo G, Difrancesco S, Haro J, Horsfall M, Ivan A, Lavelle G, Li Q, Lombardini F, Mohr D, Narayan V, Oetzmann C, Penninx B, Simblett S, Bruce S, Nica R, Wykes T, Brasen J, Myin-Germeys I, Rintala A, Conde P, Dobson R, Folarin A, Stewart C, Ranjan Y, Rashid Z, Cummins N, Manyakov N, Vairavan S, Hotopf M. Remote Assessment of Disease and Relapse in Major Depressive Disorder (RADAR-MDD): Recruitment, retention, and data availability in a longitudinal remote measurement study. Eur Psychiatry 2022. [PMCID: PMC9564033 DOI: 10.1192/j.eurpsy.2022.315] [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
Major Depressive Disorder (MDD) is prevalent, often chronic, and requires ongoing monitoring of symptoms to track response to treatment and identify early indicators of relapse. Remote Measurement Technologies (RMT) provide an exciting opportunity to transform the measurement and management of MDD, via data collected from inbuilt smartphone sensors and wearable devices alongside app-based questionnaires and tasks.
Objectives
To describe the amount of data collected during a multimodal longitudinal RMT study, in an MDD population.
Methods
RADAR-MDD is a multi-centre, prospective observational cohort study. People with a history of MDD were provided with a wrist-worn wearable, and several apps designed to: a) collect data from smartphone sensors; and b) deliver questionnaires, speech tasks and cognitive assessments and followed-up for a maximum of 2 years.
Results
A total of 623 individuals with a history of MDD were enrolled in the study with 80% completion rates for primary outcome assessments across all timepoints. 79.8% of people participated for the maximum amount of time available and 20.2% withdrew prematurely. Data availability across all RMT data types varied depending on the source of data and the participant-burden for each data type. We found no evidence of an association between the severity of depression symptoms at baseline and the availability of data. 110 participants had > 50% data available across all data types, and thus able to contribute to multiparametric analyses.
Conclusions
RADAR-MDD is the largest multimodal RMT study in the field of mental health. Here, we have shown that collecting RMT data from a clinical population is feasible.
Disclosure
No significant relationships.
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6
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Gonzalez-Perez M, Montes-Casado M, Conde P, Cervera I, Baranda J, Berges-Buxeda MJ, Perez-Olmeda M, Sanchez-Tarjuelo R, Utrero-Rico A, Lozano-Ojalvo D, Torre D, Schwarz M, Guccione E, Camara C, Llópez-Carratalá MR, Gonzalez-Parra E, Portoles P, Ortiz A, Portoles J, Ochando J. Development of Potent Cellular and Humoral Immune Responses in Long-Term Hemodialysis Patients After 1273-mRNA SARS-CoV-2 Vaccination. Front Immunol 2022; 13:845882. [PMID: 35401504 PMCID: PMC8983822 DOI: 10.3389/fimmu.2022.845882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 02/24/2022] [Indexed: 12/02/2022] Open
Abstract
Long-term hemodialysis (HD) patients are considered vulnerable and at high-risk of developing severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) infection due to their immunocompromised condition. Since COVID-19 associated mortality rates are higher in HD patients, vaccination is critical to protect them. The response towards vaccination against COVID-19 in HD patients is still uncertain and, in particular the cellular immune response is not fully understood. We monitored the humoral and cellular immune responses by analysis of the serological responses and Spike-specific cellular immunity in COVID-19-recovered and naïve HD patients in a longitudinal study shortly after vaccination to determine the protective effects of 1273-mRNA vaccination against SARS-CoV-2 in these high-risk patients. In naïve HD patients, the cellular immune response measured by IL-2 and IFN-ɣ secretion needed a second vaccine dose to significantly increase, with a similar pattern for the humoral response. In contrast, COVID-19 recovered HD patients developed a potent and rapid cellular and humoral immune response after the first vaccine dose. Interestingly, when comparing COVID-19 recovered healthy volunteers (HV), previously vaccinated with BNT162b2 vaccine to HD patients vaccinated with 1273-mRNA, these exhibited a more robust immune response that is maintained longitudinally. Our results indicate that HD patients develop strong cellular and humoral immune responses to 1273-mRNA vaccination and argue in favor of personalized immune monitoring studies in HD patients, especially if COVID-19 pre-exposed, to adapt COVID-19 vaccination protocols for this immunocompromised population.
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Affiliation(s)
| | - Maria Montes-Casado
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Patricia Conde
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Isabel Cervera
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Jana Baranda
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | | | - Mayte Perez-Olmeda
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Rodrigo Sanchez-Tarjuelo
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain.,Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Alberto Utrero-Rico
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Daniel Lozano-Ojalvo
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Denis Torre
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Megan Schwarz
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Ernesto Guccione
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Carmen Camara
- Department of Immunology, Hospital La Paz, Madrid, Spain
| | | | - Emilio Gonzalez-Parra
- Department of Nephrology, Instituto de Investigación Sanitaria (IIS)-Fundación Jimenez Díaz, Madrid, Spain
| | - Pilar Portoles
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain.,Presidencia, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Alberto Ortiz
- Department of Nephrology, Instituto de Investigación Sanitaria (IIS)-Fundación Jimenez Díaz, Madrid, Spain
| | - Jose Portoles
- Department of Nephrology, Hospital Puerta de Hierro, Madrid, Spain
| | - Jordi Ochando
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain.,Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States.,Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
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7
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Filankembo Kava A, Conde P, Atassi M, Alaoui A, Qarmiche N, Otmani N, Tachfouti N, El Fakir S. Qualité de vie des patients hypertendus et ses facteurs associés dans une population marocaine. Rev Epidemiol Sante Publique 2020. [DOI: 10.1016/j.respe.2020.03.074] [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: 10/23/2022] Open
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8
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Lu G, Rausell-Palamos F, Zhang J, Zheng Z, Zhang T, Valle S, Rosselot C, Berrouet C, Conde P, Spindler MP, Graham JG, Homann D, Garcia-Ocaña A. Dextran Sulfate Protects Pancreatic β-Cells, Reduces Autoimmunity, and Ameliorates Type 1 Diabetes. Diabetes 2020; 69:1692-1707. [PMID: 32381645 PMCID: PMC7372066 DOI: 10.2337/db19-0725] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 05/03/2020] [Indexed: 12/14/2022]
Abstract
A failure in self-tolerance leads to autoimmune destruction of pancreatic β-cells and type 1 diabetes (T1D). Low-molecular-weight dextran sulfate (DS) is a sulfated semisynthetic polysaccharide with demonstrated cytoprotective and immunomodulatory properties in vitro. However, whether DS can protect pancreatic β-cells, reduce autoimmunity, and ameliorate T1D is unknown. In this study, we report that DS, but not dextran, protects human β-cells against cytokine-mediated cytotoxicity in vitro. DS also protects mitochondrial function and glucose-stimulated insulin secretion and reduces chemokine expression in human islets in a proinflammatory environment. Interestingly, daily treatment with DS significantly reduces diabetes incidence in prediabetic NOD mice and, most importantly, reverses diabetes in early-onset diabetic NOD mice. DS decreases β-cell death, enhances islet heparan sulfate (HS)/HS proteoglycan expression, and preserves β-cell mass and plasma insulin in these mice. DS administration also increases the expression of the inhibitory costimulatory molecule programmed death-1 (PD-1) in T cells, reduces interferon-γ+CD4+ and CD8+ T cells, and enhances the number of FoxP3+ cells. Collectively, these studies demonstrate that the action of one single molecule, DS, on β-cell protection, extracellular matrix preservation, and immunomodulation can reverse diabetes in NOD mice, highlighting its therapeutic potential for the treatment of T1D.
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Affiliation(s)
- Geming Lu
- Division of Endocrinology, Diabetes and Bone Disease, Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Francisco Rausell-Palamos
- Division of Endocrinology, Diabetes and Bone Disease, Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Jiamin Zhang
- Division of Endocrinology, Diabetes and Bone Disease, Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
- Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - Zihan Zheng
- Division of Endocrinology, Diabetes and Bone Disease, Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Tuo Zhang
- Department of Microbiology and Immunology, Weill Cornell Medical College, New York, NY
| | - Shelley Valle
- School of Life Sciences, Arizona State University, Tempe, AZ
| | - Carolina Rosselot
- Division of Endocrinology, Diabetes and Bone Disease, Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Cecilia Berrouet
- Division of Endocrinology, Diabetes and Bone Disease, Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | | | - Matthew P Spindler
- Division of Endocrinology, Diabetes and Bone Disease, Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - John G Graham
- Division of Endocrinology, Diabetes and Bone Disease, Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Dirk Homann
- Division of Endocrinology, Diabetes and Bone Disease, Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Adolfo Garcia-Ocaña
- Division of Endocrinology, Diabetes and Bone Disease, Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
- The Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY
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9
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Ochando J, Conde P, Utrero-Rico A, Paz-Artal E. Tolerogenic Role of Myeloid Suppressor Cells in Organ Transplantation. Front Immunol 2019; 10:374. [PMID: 30894860 PMCID: PMC6414442 DOI: 10.3389/fimmu.2019.00374] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 12/14/2018] [Accepted: 02/14/2019] [Indexed: 01/10/2023] Open
Abstract
Myeloid-derived suppressor cells (MDSC) are a heterogeneous population of immature cells of myeloid origin with a specific immune inhibitory function that negatively regulates the adaptive immune response. Since MDSC participate in the promotion of tolerance in the context of organ transplantation, therapeutic strategies that regulate the induction and development of MDSC have been the center of scientist attention. Here we review literature regarding induction of MDSC with demonstrated suppressive function among different types of allografts and their mechanism of action. While manipulation of MDSC represents a potential therapeutic approach for the promotion of donor specific tolerance in solid organ transplantation, further characterization of their specific phenotype, which distinguishes MDSC from non-suppressive myeloid cells, and detailed evaluation of the inhibitory mechanism that determines their suppressive function, is necessary for the realistic application of MDSC as biomarkers in health and disease and their potential use as immune cell therapy in organ transplantation.
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Affiliation(s)
- Jordi Ochando
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States.,Immunología de Trasplantes, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Patricia Conde
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States.,Immunología de Trasplantes, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Alberto Utrero-Rico
- Grupo de Inmunodeficiencias e Inmunología del Trasplante, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain
| | - Estela Paz-Artal
- Grupo de Inmunodeficiencias e Inmunología del Trasplante, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain.,School of Medicine, Complutense University, Madrid, Spain
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10
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Llaudo I, Fribourg M, Medof ME, Conde P, Ochando J, Heeger PS. C5aR1 regulates migration of suppressive myeloid cells required for costimulatory blockade-induced murine allograft survival. Am J Transplant 2019; 19:633-645. [PMID: 30106232 PMCID: PMC6375810 DOI: 10.1111/ajt.15072] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 06/19/2018] [Revised: 07/17/2018] [Accepted: 07/31/2018] [Indexed: 01/25/2023]
Abstract
Costimulatory blockade-induced murine cardiac allograft survival requires intragraft accumulation of CD11b+ Ly6Clo Ly6G- regulatory myeloid cells (Mregs) that expand regulatory T cells (Tregs) and suppress effector T cells (Teffs). We previously showed that C5a receptor (C5aR1) signaling on T cells activates Teffs and inhibits Tregs, but whether and/or how C5aR1 affects Mregs required for transplant survival is unknown. Although BALB/c hearts survived >60 days in anti-CD154 (MR1)-treated or cytotoxic T-lymphocyte associated protein 4 (CTLA4)-Ig-treated wild-type (WT) recipients, they were rejected at ~30 days in MR1-treated or CTLA4-Ig-treated recipients selectively deficient in C5aR1 restricted to myeloid cells (C5ar1fl/fl xLysM-Cre). This accelerated rejection was associated with ~2-fold more donor-reactive T cells and ~40% less expansion of donor-reactive Tregs. Analysis of graft-infiltrating mononuclear cells on posttransplant day 6 revealed fewer Ly6Clo monocytes in C5ar1fl/fl xLysM-Cre recipients. Expression profiling of intragraft Ly6Clo monocytes showed that C5aR1 deficiency downregulated genes related to migration/locomotion without changes in genes associated with suppressive function. Cotransfer of C5ar1fl/fl and C5ar1fl/fl xLysM-Cre myeloid cells into MR1-treated allograft recipients resulted in less accumulation of C5ar1-/- cells within the allografts, and in vitro assays confirmed that Ly6Chi myeloid cells migrate to C5a/C5aR1-initiated signals. Together, our results newly link myeloid cell-expressed C5aR1 to intragraft accumulation of myeloid cells required for prolongation of heart transplant survival induced by costimulatory blockade.
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Affiliation(s)
- Ines Llaudo
- Translational Transplant Research Center,,Department of Medicine, and Immunology Institute Icahn School of Medicine at Mount Sinai, New York, NY
| | - Miguel Fribourg
- Translational Transplant Research Center,,Department of Neurology, Immunology Institute Icahn School of Medicine at Mount Sinai, New York, NY
| | - M. Edward Medof
- Institute of Pathology, Case Western Reserve University, Cleveland OH
| | - Patricia Conde
- Department of Medicine, and Immunology Institute Icahn School of Medicine at Mount Sinai, New York, NY
| | - Jordi Ochando
- Department of Medicine, and Immunology Institute Icahn School of Medicine at Mount Sinai, New York, NY
| | - Peter S. Heeger
- Translational Transplant Research Center,,Department of Medicine, and Immunology Institute Icahn School of Medicine at Mount Sinai, New York, NY
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11
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Conde P, Morado S, Alvarez G, Smitz J, Gentile T, Cetica P. Effect of the hematopoietic growth factors erythropoietin and kit ligand on bovine oocyte in vitro maturation and developmental competence. Theriogenology 2019; 123:37-44. [DOI: 10.1016/j.theriogenology.2018.09.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 09/06/2018] [Accepted: 09/12/2018] [Indexed: 11/28/2022]
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12
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Braza MS, van Leent MMT, Lameijer M, Sanchez-Gaytan BL, Arts RJW, Pérez-Medina C, Conde P, Garcia MR, Gonzalez-Perez M, Brahmachary M, Fay F, Kluza E, Kossatz S, Dress RJ, Salem F, Rialdi A, Reiner T, Boros P, Strijkers GJ, Calcagno CC, Ginhoux F, Marazzi I, Lutgens E, Nicolaes GAF, Weber C, Swirski FK, Nahrendorf M, Fisher EA, Duivenvoorden R, Fayad ZA, Netea MG, Mulder WJM, Ochando J. Inhibiting Inflammation with Myeloid Cell-Specific Nanobiologics Promotes Organ Transplant Acceptance. Immunity 2018; 49:819-828.e6. [PMID: 30413362 PMCID: PMC6251711 DOI: 10.1016/j.immuni.2018.09.008] [Citation(s) in RCA: 139] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/03/2018] [Accepted: 09/10/2018] [Indexed: 12/11/2022]
Abstract
Inducing graft acceptance without chronic immunosuppression remains an elusive goal in organ transplantation. Using an experimental transplantation mouse model, we demonstrate that local macrophage activation through dectin-1 and toll-like receptor 4 (TLR4) drives trained immunity-associated cytokine production during allograft rejection. We conducted nanoimmunotherapeutic studies and found that a short-term mTOR-specific high-density lipoprotein (HDL) nanobiologic treatment (mTORi-HDL) averted macrophage aerobic glycolysis and the epigenetic modifications underlying inflammatory cytokine production. The resulting regulatory macrophages prevented alloreactive CD8+ T cell-mediated immunity and promoted tolerogenic CD4+ regulatory T (Treg) cell expansion. To enhance therapeutic efficacy, we complemented the mTORi-HDL treatment with a CD40-TRAF6-specific nanobiologic (TRAF6i-HDL) that inhibits co-stimulation. This synergistic nanoimmunotherapy resulted in indefinite allograft survival. Together, we show that HDL-based nanoimmunotherapy can be employed to control macrophage function in vivo. Our strategy, focused on preventing inflammatory innate immune responses, provides a framework for developing targeted therapies that promote immunological tolerance.
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Affiliation(s)
- Mounia S Braza
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Mandy M T van Leent
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Marnix Lameijer
- Department of Medical Biochemistry, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - Brenda L Sanchez-Gaytan
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rob J W Arts
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Carlos Pérez-Medina
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Patricia Conde
- Transplant Immunology Unit, National Center of Microbiology, Instituto de Salud Carlos III, Madrid, Spain
| | - Mercedes R Garcia
- Transplant Immunology Unit, National Center of Microbiology, Instituto de Salud Carlos III, Madrid, Spain
| | - Maria Gonzalez-Perez
- Transplant Immunology Unit, National Center of Microbiology, Instituto de Salud Carlos III, Madrid, Spain
| | - Manisha Brahmachary
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Francois Fay
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ewelina Kluza
- Department of Medical Biochemistry, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - Susanne Kossatz
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Regine J Dress
- Singapore Immunology Network (SIgN), A STAR, Singapore, Singapore
| | - Fadi Salem
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Alexander Rialdi
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Thomas Reiner
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Radiology, Weill Cornell Medical College, New York, NY, USA
| | - Peter Boros
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Gustav J Strijkers
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Biomedical Engineering and Physics, Academic Medical Center, Amsterdam, the Netherlands
| | - Claudia C Calcagno
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Florent Ginhoux
- Singapore Immunology Network (SIgN), A STAR, Singapore, Singapore
| | - Ivan Marazzi
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Esther Lutgens
- Department of Medical Biochemistry, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands; Institute for Cardiovascular Prevention, Ludwig-Maximilians University Munich, Munich, Germany
| | - Gerry A F Nicolaes
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands
| | - Christian Weber
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands
| | - Filip K Swirski
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Matthias Nahrendorf
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Edward A Fisher
- Department of Medicine (Cardiology), New York University School of Medicine, New York, NY, USA
| | - Raphaël Duivenvoorden
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Nephrology, Academic Medical Center, Amsterdam, the Netherlands; Department of Vascular Medicine, Academic Medical Center, Amsterdam, the Netherlands
| | - Zahi A Fayad
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Mihai G Netea
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands; Department for Genomics & Immunoregulation, Life and Medical Sciences Institute (LIMES), University of Bonn, Bonn, Germany
| | - Willem J M Mulder
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Medical Biochemistry, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands; Laboratory of Chemical Biology, Department of Biomedical Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands.
| | - Jordi Ochando
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Transplant Immunology Unit, National Center of Microbiology, Instituto de Salud Carlos III, Madrid, Spain.
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13
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Amodio G, Cichy J, Conde P, Matteoli G, Moreau A, Ochando J, Oral BH, Pekarova M, Ryan EJ, Roth J, Sohrabi Y, Cuturi MC, Gregori S. Role of myeloid regulatory cells (MRCs) in maintaining tissue homeostasis and promoting tolerance in autoimmunity, inflammatory disease and transplantation. Cancer Immunol Immunother 2018; 68:661-672. [PMID: 30357490 PMCID: PMC6447499 DOI: 10.1007/s00262-018-2264-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 10/16/2018] [Indexed: 12/29/2022]
Abstract
Myeloid cells play a pivotal role in regulating innate and adaptive immune responses. In inflammation, autoimmunity, and after transplantation, myeloid cells have contrasting roles: on the one hand they initiate the immune response, promoting activation and expansion of effector T-cells, and on the other, they counter-regulate inflammation, maintain tissue homeostasis, and promote tolerance. The latter activities are mediated by several myeloid cells including polymorphonuclear neutrophils, macrophages, myeloid-derived suppressor cells, and dendritic cells. Since these cells have been associated with immune suppression and tolerance, they will be further referred to as myeloid regulatory cells (MRCs). In recent years, MRCs have emerged as a therapeutic target or have been regarded as a potential cellular therapeutic product for tolerance induction. However, several open questions must be addressed to enable the therapeutic application of MRCs including: how do they function at the site of inflammation, how to best target these cells to modulate their activities, and how to isolate or to generate pure populations for adoptive cell therapies. In this review, we will give an overview of the current knowledge on MRCs in inflammation, autoimmunity, and transplantation. We will discuss current strategies to target MRCs and to exploit their tolerogenic potential as a cell-based therapy.
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Affiliation(s)
- Giada Amodio
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), San Raffaele Scientific Institute IRCCS, Via Olgettina, 58, 20132, Milan, Italy
| | - Joanna Cichy
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Patricia Conde
- Centro Nacional de Microbiologia, Instituto de Salud Carlos III, Majadahonda, 28220, , Madrid, Spain
| | - Gianluca Matteoli
- Translational Research in Gastrointestinal Disorders (TARGID), Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium
| | - Aurélie Moreau
- Centre de Recherche en Transplantation et Immunologie UMR1064, INSERM, Université de Nantes, Nantes, France.,Institut de Transplantation Urologie Nephrologie (ITUN), CHU Nantes, Nantes, France
| | - Jordi Ochando
- Centro Nacional de Microbiologia, Instituto de Salud Carlos III, Majadahonda, 28220, , Madrid, Spain
| | - Barbaros H Oral
- Department of Immunology, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Michaela Pekarova
- Institute of Biophysics, The Czech Academy of Sciences, Brno, Czech Republic
| | - Elizabeth J Ryan
- Department of Biological Sciences, Faculty of Science and Engineering, University of Limerick, Limerick, Ireland
| | - Johannes Roth
- Institute of Immunology, University of Münster, Münster, Germany
| | - Yahya Sohrabi
- Molecular and Translational Cardiology, Department of Cardiovascular Medicine, University Hospital Münster, Münster, Germany
| | - Maria-Cristina Cuturi
- Centre de Recherche en Transplantation et Immunologie UMR1064, INSERM, Université de Nantes, Nantes, France.,Institut de Transplantation Urologie Nephrologie (ITUN), CHU Nantes, Nantes, France
| | - Silvia Gregori
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), San Raffaele Scientific Institute IRCCS, Via Olgettina, 58, 20132, Milan, Italy.
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14
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Kava AF, Conde P, El Rhazi K, Bennani M, Benider A, Errihani H, Bekkali R, Nejjari C, El Fakir S. Associated Factors for Health Quality of Life in Moroccan Women With Breast Cancers. J Glob Oncol 2018. [DOI: 10.1200/jgo.18.91900] [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] [Indexed: 11/20/2022] Open
Abstract
Background: Breast cancer is the most common cancer among women. Breast cancer is ranked the first female cancer (33.4%) in Morocco; and more than 60% cases are diagnosed at stage III or IV. During the last decade, health-related quality of life (HRQOL) has become an important part of breast cancer treatment. Aim: The objective of this study is to describe self- reported HRQOL in patients with breast cancer and to investigate its associations with socio-demographic and clinical variables. Methods: A prospective study was carried out in the main oncology centers in Morocco. Quality of life was measured using the Moroccan Arabic version of the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire C 30 (EORTC QLQ C30) and Breast Cancer-Specific Quality of Life Questionnaire (EORTC QLQ-BR23). Statistical data analyses were performed using descriptive statistics and multivariate analyses. Results: A total of 1463 subjects were included in the study. The subjects' mean age was 55.6 (SD. 11.2) years, 70% were married. The majority of the subjects had stage II (45.9%) and the few cases had stage IV (12.9%). Participants had a mean score for global health of 68.5. Among functional scales, social functioning scored the highest (mean 86.2, SD = 22.7). The most distressing symptom on the symptom scales was financial difficulties (mean 63.2, SD = 38.2). Using the disease-specific tool, it was found that future perspective scored the lowest (mean 40.5, SD = 37.3). On the symptom scale, arm symptoms scored the highest (mean 23.6, SD = 21.6). Significant mean differences were noted for many functional and symptom scales. Conclusion: Our results emphasize that the general HRQOL of the studied women is fairer than that of the corresponding population in other countries. This study provided baseline information on the quality of life of a large sample of Moroccan women diagnosed with breast cancer.
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Affiliation(s)
| | - P. Conde
- University Sidi Mohammed Ben Abdellah, Epidemiology, Fez, Morocco
| | - K. El Rhazi
- University Sidi Mohammed Ben Abdellah, Epidemiology, Fez, Morocco
| | - M. Bennani
- Fondation Lalla Salma, Prevention and Treatment of Cancers, Fez, Morocco
| | - A. Benider
- Oncology Center, Radiotherapy, Casablanca, Morocco
| | - H. Errihani
- National Institute of Oncology, Oncology, Rabat, Morocco
| | - R. Bekkali
- Fondation Lalla Salma, Prevention and Treatment of Cancers, Rabat, Morocco
| | - C. Nejjari
- University Sidi Mohammed Ben Abdellah, Epidemiology, Fez, Morocco
| | - S. El Fakir
- University Sidi Mohammed Ben Abdellah, Epidemiology, Fez, Morocco
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15
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Braza MS, Conde P, Garcia M, Cortegano I, Brahmachary M, Pothula V, Fay F, Boros P, Werner SA, Ginhoux F, Mulder WJM, Ochando J. Neutrophil derived CSF1 induces macrophage polarization and promotes transplantation tolerance. Am J Transplant 2018; 18:1247-1255. [PMID: 29314558 PMCID: PMC5910259 DOI: 10.1111/ajt.14645] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 12/01/2017] [Accepted: 12/16/2017] [Indexed: 01/25/2023]
Abstract
The colony-stimulating factor 1 (CSF1) regulates the differentiation and function of tissue macrophages and determines the outcome of the immune response. The molecular mechanisms behind CSF1-mediated macrophage development remain to be elucidated. Here we demonstrate that neutrophil-derived CSF1 controls macrophage polarization and proliferation, which is necessary for the induction of tolerance. Inhibiting neutrophil production of CSF1 or preventing macrophage proliferation, using targeted nanoparticles loaded with the cell cycle inhibitor simvastatin, abrogates the induction of tolerance. These results provide new mechanistic insights into the developmental requirements of tolerogenic macrophages and identify CSF1 producing neutrophils as critical regulators of the immunological response.
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Affiliation(s)
- Mounia S. Braza
- Department of Oncological SciencesIcahn School of Medicine at Mount SinaiNew YorkNYUSA
| | - Patricia Conde
- Department of Oncological SciencesIcahn School of Medicine at Mount SinaiNew YorkNYUSA,Immunología de TransplantesCentro Nacional de MicrobiologíaInstituto de Salud Carlos IIIMadridSpain
| | - Mercedes Garcia
- Immunología de TransplantesCentro Nacional de MicrobiologíaInstituto de Salud Carlos IIIMadridSpain
| | - Isabel Cortegano
- Immunología de TransplantesCentro Nacional de MicrobiologíaInstituto de Salud Carlos IIIMadridSpain
| | - Manisha Brahmachary
- Department of Oncological SciencesIcahn School of Medicine at Mount SinaiNew YorkNYUSA
| | - Venu Pothula
- Department of Oncological SciencesIcahn School of Medicine at Mount SinaiNew YorkNYUSA
| | - Francois Fay
- Translational and Molecular Imaging InstituteIcahn School of Medicine at Mount SinaiNew YorkNYUSA
| | - Peter Boros
- Department of SurgeryIcahn School of Medicine at Mount SinaiNew YorkNYUSA
| | | | - Florent Ginhoux
- Singapore Immunology NetworkAgency for ScienceTechnology and Research (A∗STAR)SingaporeSingapore
| | - Willem J. M. Mulder
- Translational and Molecular Imaging InstituteIcahn School of Medicine at Mount SinaiNew YorkNYUSA
| | - Jordi Ochando
- Department of Oncological SciencesIcahn School of Medicine at Mount SinaiNew YorkNYUSA,Immunología de TransplantesCentro Nacional de MicrobiologíaInstituto de Salud Carlos IIIMadridSpain
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16
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Abstract
Macrophage accumulation in transplanted organs has long been recognized as a feature of allograft rejection1. Immunogenic monocytes infiltrate the allograft early after transplantation, mount a graft reactive response against the transplanted organ, and initiate organ rejection2. Recent data suggest that suppressive macrophages facilitate successful long-term transplantation3 and are required for the induction of transplantation tolerance4. This suggests a multidimensional concept of macrophage ontogeny, activation, and function, which demands a new roadmap for the isolation and analysis of macrophage function5. Due to the plasticity of macrophages, it is necessary to provide a methodology to isolate and characterize macrophages, depending on the tissue environment, and to define their functions according to different scenarios. Here, we describe a protocol for immune characterization of graft-infiltrating macrophages and the methods we used to functionally evaluate their capacity to inhibit CD8+ T proliferation and to promote CD4+Foxp3+ Treg expansion in vitro.
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Affiliation(s)
- Jordi Ochando
- Department of Medicine, Icahn School of Medicine at Mount Sinai; Immunología de Trasplantes, Centro Nacional de Microbiología, Instituto de Salud Carlos III
| | - Patricia Conde
- Department of Medicine, Icahn School of Medicine at Mount Sinai; Immunología de Trasplantes, Centro Nacional de Microbiología, Instituto de Salud Carlos III;
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Rodrigues A, Pechirra P, Guiomar R, Conde P, Gomez V, Nunes B, Machado A. Virological data integration on influenza vaccine effectiveness, Portugal 2015/16. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw175.142] [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: 11/14/2022] Open
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18
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Cristóvão P, Pechirra P, Conde P, Costa I, Guiomar R. Molecular characterization of human rhinovirus in Portugal: 2014–2015 season. J Clin Virol 2016. [DOI: 10.1016/j.jcv.2016.08.003] [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: 10/21/2022]
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19
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Guiomar R, Cristóvão P, Conde P, Pechirra P. Molecular epidemiology of respiratory syncytial virus between 2010–2015, in Portugal. J Clin Virol 2015. [DOI: 10.1016/j.jcv.2015.07.117] [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: 10/23/2022]
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20
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Abstract
Myeloid-derived suppressor cells (MDSC) are cells of myeloid origin with enhanced suppressive function. They are negative regulators of the immune responses and comprise a heterogeneous mixture of immunosuppressive cells of monocytic (M-MDSC) and granulocytic (G-MDSC) origin. A more recent nomenclature proposes the term "suppressive monocyte derived cells" (suppressive MCs) to define CSF1/CSF2-dependent mouse suppressor cells that develop from common monocyte progenitors (cMoPs) after birth. Here, we review the literature about monocytic-derived cells with demonstrated suppressor function in vitro and in vivo within the context of solid organ transplantation.
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Affiliation(s)
- Jordi Ochando
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Patricia Conde
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Vincenzo Bronte
- Department of Pathology and Diagnostics, Verona University Hospital, Verona, Italy
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21
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Affiliation(s)
- J C Ochando
- Department of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - P Conde
- Department of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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22
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Sánchez F, Orero A, Soriano A, Correcher C, Conde P, González A, Hernández L, Moliner L, Rodríguez-Alvarez MJ, Vidal LF, Benlloch JM, Chapman SE, Leevy WM. ALBIRA: a small animal PET∕SPECT∕CT imaging system. Med Phys 2013; 40:051906. [PMID: 23635276 DOI: 10.1118/1.4800798] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE The authors have developed a trimodal PET∕SPECT∕CT scanner for small animal imaging. The gamma ray subsystems are based on monolithic crystals coupled to multianode photomultiplier tubes (MA-PMTs), while computed tomography (CT) comprises a commercially available microfocus x-ray tube and a CsI scintillator 2D pixelated flat panel x-ray detector. In this study the authors will report on the design and performance evaluation of the multimodal system. METHODS X-ray transmission measurements are performed based on cone-beam geometry. Individual projections were acquired by rotating the x-ray tube and the 2D flat panel detector, thus making possible a transaxial field of view (FOV) of roughly 80 mm in diameter and an axial FOV of 65 mm for the CT system. The single photon emission computed tomography (SPECT) component has a dual head detector geometry mounted on a rotating gantry. The distance between the SPECT module detectors can be varied in order to optimize specific user requirements, including variable FOV. The positron emission tomography (PET) system is made up of eight compact modules forming an octagon with an axial FOV of 40 mm and a transaxial FOV of 80 mm in diameter. The main CT image quality parameters (spatial resolution and uniformity) have been determined. In the case of the SPECT, the tomographic spatial resolution and system sensitivity have been evaluated with a (99m)Tc solution using single-pinhole and multi-pinhole collimators. PET and SPECT images were reconstructed using three-dimensional (3D) maximum likelihood and ordered subset expectation maximization (MLEM and OSEM) algorithms developed by the authors, whereas the CT images were obtained using a 3D based FBP algorithm. RESULTS CT spatial resolution was 85 μm while a uniformity of 2.7% was obtained for a water filled phantom at 45 kV. The SPECT spatial resolution was better than 0.8 mm measured with a Derenzo-like phantom for a FOV of 20 mm using a 1-mm pinhole aperture collimator. The full width at half-maximum PET radial spatial resolution at the center of the field of view was 1.55 mm. The SPECT system sensitivity for a FOV of 20 mm and 15% energy window was 700 cps∕MBq (7.8 × 10(-2)%) using a multi-pinhole equipped with five apertures 1 mm in diameter, whereas the PET absolute sensitivity was 2% for a 350-650 keV energy window and a 5 ns timing window. Several animal images are also presented. CONCLUSIONS The new small animal PET∕SPECT∕CT proposed here exhibits high performance, producing high-quality images suitable for studies with small animals. Monolithic design for PET and SPECT scintillator crystals reduces cost and complexity without significant performance degradation.
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Affiliation(s)
- F Sánchez
- Instituto de Instrumentación para Imagen Molecular (I3M), Centro mixto CSIC - Universitat Politècnica de València - CIEMAT, camino de Vera s∕n, 46022 Valencia, Spain.
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23
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Rodríguez-Alvarez MJ, Soriano A, Iborra A, Sánchez F, González AJ, Conde P, Hernández L, Moliner L, Orero A, Vidal LF, Benlloch JM. Expectation maximization (EM) algorithms using polar symmetries for computed tomography (CT) image reconstruction. Comput Biol Med 2013; 43:1053-61. [PMID: 23706690 DOI: 10.1016/j.compbiomed.2013.04.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 04/04/2013] [Accepted: 04/23/2013] [Indexed: 11/24/2022]
Abstract
We suggest a symmetric-polar pixellation scheme which makes possible a reduction of the computational cost for expectation maximization (EM) iterative algorithms. The proposed symmetric-polar pixellation allows us to deal with 3D images as a whole problem without dividing the 3D problem into 2D slices approach. Performance evaluation of each approach in terms of stability and image quality is presented. Exhaustive comparisons between all approaches were conducted in a 2D based image reconstruction model. From these 2D approaches, that showing the best performances were finally implemented and evaluated in a 3D based image reconstruction model. Comparison to 3D images reconstructed with FBP is also presented. Although the algorithm is presented in the context of computed tomography (CT) image reconstruction, it can be applied to any other tomographic technique as well, due to the fact that the only requirement is a scanning geometry involving measurements of an object under different projection angles. Real data have been acquired with a small animal (CT) scanner to verify the proposed mathematical description of the CT system.
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Affiliation(s)
- M J Rodríguez-Alvarez
- Instituto de Instrumentación para Imagen Molecular (I3M), Centro mixto CSIC-Universitat Politécnica de Valencia-CIEMAT, Camino de Vera s/n E-46022 Valencia, Spain.
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Luna AL, Acosta-Saavedra LC, Lopez-Carrillo L, Conde P, Vera E, De Vizcaya-Ruiz A, Bastida M, Cebrian ME, Calderon-Aranda ES. Arsenic alters monocyte superoxide anion and nitric oxide production in environmentally exposed children. Toxicol Appl Pharmacol 2010; 245:244-51. [PMID: 20226805 DOI: 10.1016/j.taap.2010.03.006] [Citation(s) in RCA: 19] [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] [Received: 09/23/2009] [Revised: 02/24/2010] [Accepted: 03/03/2010] [Indexed: 10/19/2022]
Abstract
Arsenic (As) exposure has been associated with alterations in the immune system, studies in experimental models and adults have shown that these effects involve macrophage function; however, limited information is available on what type of effects could be induced in children. The aim of this study was to evaluate effects of As exposure, through the association of inorganic As (iAs) and its metabolites [monomethylated arsenic (MMA) and dimethylated arsenic (DMA)] with basal levels of nitric oxide (NO(-)) and superoxide anion (O(2)(-)), in peripheral blood mononuclear cells (PBMC) and monocytes, and NO(-) and O(2)(-) produced by activated monocytes. Hence, a cross-sectional study was conducted in 87 children (6-10 years old) who had been environmentally exposed to As through drinking water. Levels of urinary As species (iAs, MMA and DMA) were determined by hydride generation atomic absorption spectrometry, total As (tAs) represents the sum of iAs and its species; tAs urine levels ranged from 12.3 to 1411 microg/g creatinine. Using multiple linear regression models, iAs presented a positive and statistical association with basal NO(-) in PBMC (beta=0.0048, p=0.049) and monocytes (beta=0.0044, p=0.044), while basal O(2)(-) had a significant positive association with DMA (beta=0.0025, p=0.046). In activated monocytes, O(2)(-) showed a statistical and positive association with iAs (beta=0.0108, p=0.023), MMA (beta=0.0066, p=0.022), DMA (beta=0.0018, p=0.015), and tAs (beta=0.0013, p=0.015). We conclude that As exposure in the studied children was positively associated with basal levels of NO(-) and O(2)(-) in PBMC and monocytes, suggesting that As induces oxidative stress in circulating blood cells. Additionally, this study showed a positive association of O(2)(-) production with iAs and its metabolites in stimulated monocytes, supporting previous data that suggests that these cells, and particularly the O(2)(-) activation pathway, are relevant targets for As toxicity.
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Affiliation(s)
- Ana L Luna
- Toxicologia, Cinvestav, PO Box: 14-740, Mexico, D.F., 07360, Mexico
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Sotillo MG, Fanjul EA, Castanedo S, Abascal AJ, Menendez J, Emelianov M, Olivella R, García-Ladona E, Ruiz-Villarreal M, Conde J, Gómez M, Conde P, Gutierrez AD, Medina R. Towards an operational system for oil-spill forecast over Spanish waters: initial developments and implementation test. Mar Pollut Bull 2008; 56:686-703. [PMID: 18321533 DOI: 10.1016/j.marpolbul.2007.12.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2007] [Revised: 12/19/2007] [Accepted: 12/28/2007] [Indexed: 05/26/2023]
Abstract
The ESEOO Project, launched after the Prestige crisis, has boosted operational oceanography capacities in Spain, creating new operational oceanographic services and increasing synergies between these new operational tools and already existing systems. In consequence, the present preparedness to face an oil-spill crisis is enhanced, significantly improving the operational response regarding ocean, meteorological and oil-spill monitoring and forecasting. A key aspect of this progress has been the agreement between the scientific community and the Spanish Search and Rescue Institution (SASEMAR), significantly favoured within the ESEOO framework. Important achievements of this collaboration are: (1) the design of protocols that at the crisis time provide operational state-of-the-art information, derived from both forecasting and observing systems; (2) the establishment, in case of oil-spill crisis, of a new specialized unit, named USyP, to monitor and forecast the marine oceanographic situation, providing the required met-ocean and oil-spill information for the crisis managers. The oil-spill crisis scenario simulated during the international search and rescue Exercise "Gijón-2006", organized by SASEMAR, represented an excellent opportunity to test the capabilities and the effectiveness of this USyP unit, as well as the protocols established to analyze and transfer information. The results presented in this work illustrate the effectiveness of the operational approach, and constitute an encouraging and improved base to face oil-spill crisis.
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Affiliation(s)
- M G Sotillo
- Organismo Público Puertos del Estado (PdE), Av Partenón, 10, 28042 Madrid, Spain.
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26
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Conde P, Sarmiento LE, Parramon F, Corominas JM, Villalonga A. [Anaphylactic reaction to latex after surgery and release of the ischemic cuff]. REVISTA ESPANOLA DE ANESTESIOLOGIA Y REANIMACION 2006; 53:514-5. [PMID: 17125019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
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Conde P, Acosta-Saavedra LC, Goytia-Acevedo RC, Calderon-Aranda ES. Sodium arsenite-induced inhibition of cell proliferation is related to inhibition of IL-2 mRNA expression in mouse activated T cells. Arch Toxicol 2006; 81:251-9. [PMID: 17009048 DOI: 10.1007/s00204-006-0152-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2006] [Accepted: 08/28/2006] [Indexed: 01/24/2023]
Abstract
A proposed mechanism for the As-induced inhibition of cell proliferation is the inhibition of IL-2 secretion. However, the effects of arsenite on IL-2 mRNA expression or on the ERK pathway in activated-T cells have not yet been described. We examined the effect of arsenite on IL-2 mRNA expression, cell activation and proliferation in PHA-stimulated murine lymphocytes. Arsenite (1 and 10 microM) decreased IL-2 mRNA expression, IL-2 secretion and cell proliferation. Arsenite (10 microM) strongly inhibited ERK-phosphorylation. However, the partial inhibition (50%) of IL-2 mRNA produced by 1 microM, consistent with the effects on IL-2 secretion and cell proliferation, could not be explained by the inhibition of ERK-phosphorylation, which was not affected at this concentration. The inhibition of IL-2 mRNA expression caused by 1 microM could be associated to effects on pathways located downstream or parallel to ERK. Arsenite also decreased early activation (surface CD69+ expression) in both CD4+ and CD8+, and decreased total CD8+ count without significantly affecting CD4+, supporting that the cellular immune response mediated by cytotoxic T cells is an arsenic target. Thus, our results suggest that arsenite decreases IL-2 mRNA levels and T-cell activation and proliferation. However, further studies on the effects of arsenite on IL-2 gene transcription and IL-2 mRNA stability are needed.
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Affiliation(s)
- Patricia Conde
- Sección Toxicología, Centro de Investigación y de Estudios Avanzados, CINVESTAV, P.O. Box 14-740, Mexico, D.F., 07360, Mexico
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Ashrafi K, Valero MA, Massoud J, Sobhani A, Solaymani-Mohammadi S, Conde P, Khoubbane M, Bargues MD, Mas-Coma S. Plant-borne human contamination by fascioliasis. Am J Trop Med Hyg 2006; 75:295-302. [PMID: 16896136] [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: 05/11/2023] Open
Abstract
Contamination by fasciolids takes place through ingestion of metacercariae attached to vegetables. Experimental studies were performed with plant-made foods suggesting a role in human contamination in Iran and on the usefulness of potassium permanganate as a preventive tool for killing metacercariae attached to vegetables used in salads in Egypt. In the foods assayed, although viability decreases with time, a high percentage of the metacercariae were still alive 2 and 4 weeks after preparation. Infection of laboratory animals proved that metacercariae kept their infectivity. The 5-minute tests of potassium permanganate effects showed that metacercarial viability was not affected even at the very high doses of 300, 600, and 1,200 mg/L. Careful, subsequent washing of leaves and vegetables with water is therefore needed after its application. A review on similar studies performed with metacercariae belonging to fasciolid and other trematode species affecting humans is included.
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Affiliation(s)
- Keyhan Ashrafi
- Department of Medical Microbiology, Faculty of Medicine, Gilan University of Medical Sciences, Gilan University Complex, Rasht, Iran.
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Soto-Peña GA, Luna AL, Acosta-Saavedra L, Conde P, López-Carrillo L, Cebrián ME, Bastida M, Calderón-Aranda ES, Vega L. Assessment of lymphocyte subpopulations and cytokine secretion in children exposed to arsenic. FASEB J 2006; 20:779-781. [PMID: 16461332 DOI: 10.1096/fj.05-4860fjen] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Exposure of several human populations to arsenic has been associated with a high incidence of detrimental dermatological and carcinogenic effects. To date, studies examining the immunotoxic effects of arsenic in humans, and specifically in children, are lacking. Therefore, we evaluated several parameters of immunological status in a group of children exposed to arsenic through their drinking water. Peripheral blood mononuclear cells (PBMCs) of 90 children (6 to 10 years old) were collected. Proportions of lymphocyte subpopulations, PBMC mitogenic proliferative response, and urinary arsenic levels were evaluated. Increased urine arsenic levels were associated with a reduced proliferative response to phytohemaglutinin (PHA) stimulation (P=0.005), CD4 subpopulation proportion (P=0.092), CD4/CD8 ratio (P=0.056), and IL-2 secretion levels (P=0.003). Increased arsenic exposure was also associated with an increase in GM-CSF secretion by mononucleated cells (P=0.000). We did not observe changes in CD8, B, or NK cell proportions, nor did we observe changes in the secretion of IL-4, IL-10, or IFN-gamma by PHA-activated PBMCs. These data indicate that arsenic exposure could alter the activation processes of T cells, such that an immunosuppression status that favors opportunistic infections and carcinogenesis is produced together with increased GM-CSF secretion that may be associated with chronic inflammation.
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Affiliation(s)
- Gerson A Soto-Peña
- Sección Externa de Toxicología, CINVESTAV, San Pedro Zacatenco, México City, México
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Soto-Peña GA, Luna AL, Acosta-Saavedra L, Conde P, López-Carrillo L, Cebrián ME, Bastida M, Calderón-Aranda ES, Vega L. Assessment of lymphocyte subpopulations and cytokine secretion in children exposed to arsenic. FASEB J 2006; 20:779-81. [PMID: 16461332 DOI: 10.1096/fj.05-4860fje] [Citation(s) in RCA: 157] [Impact Index Per Article: 8.7] [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: 11/11/2022]
Abstract
Exposure of several human populations to arsenic has been associated with a high incidence of detrimental dermatological and carcinogenic effects. To date, studies examining the immunotoxic effects of arsenic in humans, and specifically in children, are lacking. Therefore, we evaluated several parameters of immunological status in a group of children exposed to arsenic through their drinking water. Peripheral blood mononuclear cells (PBMCs) of 90 children (6 to 10 years old) were collected. Proportions of lymphocyte subpopulations, PBMC mitogenic proliferative response, and urinary arsenic levels were evaluated. Increased urine arsenic levels were associated with a reduced proliferative response to phytohemaglutinin (PHA) stimulation (P=0.005), CD4 subpopulation proportion (P=0.092), CD4/CD8 ratio (P=0.056), and IL-2 secretion levels (P=0.003). Increased arsenic exposure was also associated with an increase in GM-CSF secretion by mononucleated cells (P=0.000). We did not observe changes in CD8, B, or NK cell proportions, nor did we observe changes in the secretion of IL-4, IL-10, or IFN-gamma by PHA-activated PBMCs. These data indicate that arsenic exposure could alter the activation processes of T cells, such that an immunosuppression status that favors opportunistic infections and carcinogenesis is produced together with increased GM-CSF secretion that may be associated with chronic inflammation.
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Affiliation(s)
- Gerson A Soto-Peña
- Sección Externa de Toxicología, CINVESTAV, San Pedro Zacatenco, México City, México
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Abt I, Adams M, Agari M, Albrecht H, Aleksandrov A, Amaral V, Amorim A, Aplin SJ, Aushev V, Bagaturia Y, Balagura V, Bargiotti M, Barsukova O, Bastos J, Batista J, Bauer C, Bauer TS, Belkov A, Belkov A, Belotelov I, Bertin A, Bobchenko B, Böcker M, Bogatyrev A, Bohm G, Bräuer M, Bruinsma M, Bruschi M, Buchholz P, Buran T, Carvalho J, Conde P, Cruse C, Dam M, Danielsen KM, Danilov M, Castro SD, Deppe H, Dong X, Dreis HB, Egorytchev V, Ehret K, Eisele F, Emeliyanov D, Essenov S, Fabbri L, Faccioli P, Feuerstack-Raible M, Flammer J, Fominykh B, Funcke M, Garrido L, Giacobbe B, Gläss J, Goloubkov D, Golubkov Y, Golutvin A, Golutvin I, Gorbounov I, Gorisek A, Gouchtchine O, Goulart DC, Gradl S, Gradl W, Grimaldi F, Groth-Jensen J, Guilitsky Y, Hansen JD, Hernández JM, Hofmann W, Hott T, Hulsbergen W, Husemann U, Igonkina O, Ispiryan M, Jagla T, Jiang C, Kapitza H, Karabekyan S, Karpenko N, Keller S, Kessler J, Khasanov F, Kiryushin Y, Klinkby E, Knöpfle KT, Kolanoski H, Korpar S, Krauss C, Kreuzer P, Krizan P, Krücker D, Kupper S, Kvaratskheliia T, Lanyov A, Lau K, Lewendel B, Lohse T, Lomonosov B, Männer R, Masciocchi S, Massa I, Matchikhilian I, Medin G, Medinnis M, Mevius M, Michetti A, Mikhailov Y, Mizuk R, Muresan R, Zur Nedden M, Negodaev M, Nörenberg M, Nowak S, Núñez Pardo de Vera MT, Ouchrif M, Ould-Saada F, Padilla C, Peralta D, Pernack R, Pestotnik R, Piccinini M, Pleier MA, Poli M, Popov V, Pose A, Pose D, Prystupa S, Pugatch V, Pylypchenko Y, Pyrlik J, Reeves K, Ressing D, Rick H, Riu I, Robmann P, Rostovtseva I, Rybnikov V, Sánchez F, Sbrizzi A, Schmelling M, Schmidt B, Schreiner A, Schröder H, Schwartz AJ, Schwarz AS, Schwenninger B, Schwingenheuer B, Sciacca F, Semprini-Cesari N, Shuvalov S, Silva L, Smirnov K, Sözüer L, Solunin S, Somov A, Somov S, Spengler J, Spighi R, Spiridonov A, Stanovnik A, Staric M, Stegmann C, Subramania HS, Symalla M, Tikhomirov I, Titov M, Tsakov I, Uwer U, van Eldik C, Vassiliev Y, Villa M, Vitale A, Vukotic I, Wahlberg H, Walenta AH, Walter M, Wang JJ, Wegener D, Werthenbach U, Wolters H, Wurth R, Wurz A, Zaitsev Y, Zavertyaev M, Zech G, Zeuner T, Zhelezov A, Zheng Z, Zimmermann R, Zivko T, Zoccoli A. Limits for the central production of Theta+ and Xi(--)pentaquarks in 920-GeV pA collisions. Phys Rev Lett 2004; 93:212003. [PMID: 15600999 DOI: 10.1103/physrevlett.93.212003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2004] [Indexed: 05/24/2023]
Abstract
We have searched for Theta+(1540) and Xi(--)(1862) pentaquark candidates in proton-induced reactions on C, Ti, and W targets at midrapidity and square root of s = 41.6 GeV. In 2 x 10(8) inelastic events we find no evidence for narrow (sigma approximately 5 MeV) signals in the Theta+ --> pK0(S) and Xi(--) --> Xi- pi- channels; our 95% C.L. upper limits (UL) for the inclusive production cross section times branching fraction B dsigma/dy/(y approximately 0) are (4-16) mub/N for a Theta+ mass between 1521 and 1555 MeV, and 2.5 mub/N for the Xi(--). The UL of the yield ratio of Theta+/Lambda(1520) < (3-12)% is significantly lower than model predictions. Our UL of B Xi(--)/Xi(1530)0 < 4% is at variance with the results that have provided the first evidence for the Xi(--).
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Affiliation(s)
- I Abt
- Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, D-80805 Munich, Germany
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Conde P, Loureiro J, Santos C. Somatic embryogenesis and plant regeneration from leaves of Ulmus minor Mill. Plant Cell Rep 2004; 22:632-639. [PMID: 14615908 DOI: 10.1007/s00299-003-0735-1] [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: 03/17/2003] [Revised: 10/02/2003] [Accepted: 10/04/2003] [Indexed: 05/24/2023]
Abstract
Somatic embryogenesis from mature elm ( Ulmus minor Mill.) in vitro-cloned material is possible. Embryogenic callus was obtained from leaves inoculated on two different MS-based media-one supplemented with 2.3 microM 2,4-dichlorophenoxyacetic acid (I2) and the other supplemented with 1.1 microM kinetin (I6). However, only leaves cultured on medium I6 produced somatic embryos, at the globular stage, when embryogenic callus was maintained in induction media. When embryogenic callus from medium I6 was transferred to basal medium, somatic embryos with green cotyledons were obtained. An average of 35.9% of these embryos converted easily into normal plants in conversion medium with 1% sucrose. Acclimatisation reached 39.7%, and this was not significantly different from a control group consisting of plants propagated by axillary buds. No morphological differences were observed between plants derived from somatic embryos and control plants. Also, no differences in ploidy were detected between the somatic embryo-derived plants and the mother plants.
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Affiliation(s)
- P Conde
- Department of Biology, Campus Universitário de Santiago, University of Aveiro, 3810-193, Aveiro, Portugal
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Oliver J, Conde P, Pisano E, Rodríguez-Cuenca S, Roca P. Using the Web to aid biochemists and microbiologists: an example of computer-based learning using PCR as an example. Med Inform Internet Med 2002; 27:99-109. [PMID: 12507269 DOI: 10.1080/146392302100001412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The aim of this study was two-fold: to make available to the medical community a fast, efficient tool for troubleshooting PCR problems, and to demonstrate that hypermedia allow one to approach this kind of problem in a new, more useful way. The Web provides access to an enormous amount of information in the medical area, and in particular enables troubleshooting of new techniques in the medical laboratory. Currently it is possible to find textual information but it is not always easy to find hypermedia information. In many cases authors change only the means of dissemination of a book or paper to the Web, but do not adapt the information to the features of this new medium. The prototype of our hypermedia application was developed using Director and Flash programs (Macromedia), the application was developed from a decision tree built as a result of information compiled from expert PCR users and the existing literature. It was implemented on a website using Dreamweaver (Macromedia). The usefulness and possibilities of this application have been tested with physicians, medical laboratory technicians, and health science students, and have been proven to be more effective than traditional methods, both in education processes and in helping researchers and medical laboratory technicians in their daily work. The advance and popularization of the Internet in the medical profession requires information on the Web to adapt to the advantages offered by hypermedia. This new step must be taken, and the Web must offer medical users not only a different medium of information distribution but also a new way of handling and obtaining information.
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Affiliation(s)
- J Oliver
- Laboratori de Biologia Molecular, Nutrició i Biotecnologia, Departament de Biología Fonamental i Ciències de la Salut, Universitat de les Illes Balears, Cra Valldemossa Km 7.5. E-07071 Palma de Mallorca, Spain
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Abstract
PURPOSE Depth of wall invasion is the main prognostic factor in gastric cancer. We studied the utility of hydrogastric sonography in the evaluation of transmural infiltration by gastric cancer. METHODS Thirty-seven patients with gastric adenocarcinoma were examined before surgery with a 5-MHz probe after the ingestion of 100-400 ml of water (mean, 330 ml). Sonographic results were compared with pathologic classifications obtained after surgery. RESULTS Of the 37 tumors, 15 were found at surgery to be in the antrum, 10 were in the gastric body, 5 were proximal, and 7 were diffuse. After surgery, tumors were classified as follows: 2 (5%) T1, 4 (11%) T2, 15 (41%) T3, and 16 (43%) T4. Hydrogastric sonography correctly classified 30 (81%) of the 37 tumors. Sonography was correct for 2 (100%) of the 2 T1 tumors, 2 (50%) of the 4 T2 tumors, 13 (87%) of the 15 T3 tumors, and 13 (81%) of the 16 T4 tumors. Five sonographic errors were due to understaging and 4 to overstaging. With regard to tumor site, sonographic results were correct for 4 (57%) of the 7 diffuse tumors, 3 (60%) of the 5 proximal tumors, 9 (90%) of the 10 gastric body tumors, and 14 (93%) of the 15 antral tumors. CONCLUSIONS Hydrogastric sonography is useful for preoperative evaluation of transmural infiltration by gastric cancers, particularly tumors in the antrum or gastric body.
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Affiliation(s)
- J M Segura
- Gastroenterology Service, Hospital La Paz, Paseo de La Castellana, 261, 28041 Madrid, Spain
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Erdozain JC, Herrera A, Molina E, Conde P, Arjonilla A, Segura JM. [Enterovesical fistula in patient with Crohn disease]. Rev Esp Enferm Dig 1998; 90:726-8. [PMID: 9824939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Erdozain JC, Herrera A, Molina E, Conde P, Moreno A, Olveira A, Martínez A, Segura JM. [Usefulness of abdominal echography in the diagnosis of active Crohn's disease]. Gastroenterol Hepatol 1998; 21:272-6. [PMID: 9711008] [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: 02/08/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the relevance of the ultrasonography in assessing activity in a series of patients with Crohn's disease. PATIENTS AND METHODS A series of 24 patients with active (Crohn's disease activity index > 150) ileal or ileocolonic Crohn disease underwent abdominal ultrasonography. RESULTS There was a significant correlation between bowel wall thickening and the Crohn's disease activity index: the higher the bowel wall thickening was the higher were the values of Crohn's disease activity index. Two or more ultrasound studies were performed in 10 patients with bowel wall > 4 mm during treatment, and a progressive normalization of bowel wall size was observed with new thickening when recurrence occurred. CONCLUSIONS A bowel wall thickening (> or = 4 mm) was found in patients with active Crohn's disease. A patient with bowel wall thickness > 6 mm should make us suspect the presence of stenosis. Abdominal ultrasonography is an accurate method in the first assessment of Crohn's disease because its high correlation with the Crohn's disease activity index.
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Affiliation(s)
- J C Erdozain
- Servicio de Aparato Digestivo, Hospital La Paz, Madrid
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Pérez-Martín G, Gómez-Cerezo J, Codoceo R, Olveira A, Conde P, Garcés MC, Barbado FJ, Vázquez JJ. Bilirubinate granules: main pathologic bile component in patients with idiopathic acute pancreatitis. Am J Gastroenterol 1998; 93:360-2. [PMID: 9517640 DOI: 10.1111/j.1572-0241.1998.00360.x] [Citation(s) in RCA: 9] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the main pathologic component of bile obtained by biliary drainage in patients with acute idiopathic pancreatitis and therapeutic implications. METHOD Eighteen patients diagnosed with idiopathic acute pancreatitis underwent biliary drainage. Microscopic evaluation of bile was performed and pathologic components were classified in cholesterol microcrystals, bilirubinate granules, and calcium microspherolites. RESULTS Five patients showed no abnormalities. In 11 patients, bilirubinate granules were found, cholesterol microcrystals in two, and Giardia lamblia in two. CONCLUSION Bilirubinate granules are the main pathologic component of bile in patients with acute idiopathic pancreatitis. Cholecystectomy is the preferred therapeutic approach.
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Affiliation(s)
- G Pérez-Martín
- Department of Internal Medicine, La Paz Hospital, Autonoma University, Madrid, Spain
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Conde P, Erdozaín JC, Olveira A, Herrera A, Segura JM. [A patient with five synchronous adenocarcinomas of the colon]. Rev Esp Enferm Dig 1998; 90:124. [PMID: 9567644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Herrera A, Erdozain JC, Molina E, Conde P, Palomo V. Spontaneous regression of hepatocellular carcinoma. Am J Gastroenterol 1996; 91:1288-9. [PMID: 8651210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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40
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Lizasoain J, Rubio FA, Erdozain JC, Olveira A, Conde P. Folliculitis and mesalamine. Am J Gastroenterol 1996; 91:819-20. [PMID: 8677969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Pintor-Toro JA, Sanchez-Madrid F, Vidal MA, Conde P. Studies on the modification of Escherichia coli ribosomal protein L7/L12 by succinic anhydride. Experientia 1982; 38:241-3. [PMID: 6174364 DOI: 10.1007/bf01945089] [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] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Lysine modification by increasing quantities of succinic anhydride in the Escherichia coli ribosomal protein L7/L12 produces loss of its ability in reconstitution of elongation-factor-G-dependent GTP hydrolysis and polyphenylalanine synthesis activities, showing lower antigenicity and loss of antigenic determinants.
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Abstract
Precipitation of Saccharomyces cerevisiae ribosomes by ethanol under experimental conditions that do not release the ribosomal proteins can affect the activity of the particles. In the presence of 0.4 M NH4Cl and 50% ethanol only the most acidic proteins from yeast and rat liver ribosomes are released. At 1 M NH4Cl two more non-acidic proteins are lost from the ribosomes. The release of the acidic proteins causes a small inactivation of the polymerizing activity of the particles, additional to that caused by the precipitation itself. The elongation-factor-2-dependent GTP hydrolysis of the ribosomes is, however, more affected by the loss of acidic proteins. These proteins can stimulate the GTPase but not the polymerising activity when added back to the treated particles. Eukaryotic proteins cannot be substituted for bacterial acidic proteins L7 and L12. We have not detected immunological cross-reaction between acidic proteins from Escherichia coli and those from yeast, Artemia salina and rat liver or between acidic proteins from these eukaryotic ribosomes among themselves.
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Abstract
70-S ribosomes and 50-S ribosomal subunits from Escherichia coli D10 were treated with proteinase K for increasing periods of time. Peptidyl transferase activity and sparsomycin-induced binding of (U)C-A-C-C-A-[3H]Leu-Ac were tested in the treated particles, the binding of the substrate being more sensitive to the protease than peptide bond formation. Comparison of the amounts of proteins present in the treated particles with the residual activity indicates that only proteins L3 and L14 are released at a similar rate to that at which peptidyl transferase activity is lost. Proteins related to this ribosomal activity by other techniques are lost at a faster rate than the activity itself. In addition, the results indicate that sparsomycin stimulates the binding of the substrate by a different mechanism from that which inhibits peptide bond formation.
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Conde P, Torres JA, Aguirre M, Urbán A, Navarro V. [Pheochromocytoma of rare location and with diabetes mellitus]. Rev Clin Esp 1970; 118:171-4. [PMID: 5486374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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