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Lucena MI, Villanueva-Paz M, Alvarez-Alvarez I, Aithal GP, Björnsson ES, Cakan-Akdogan G, Cubero FJ, Esteves F, Falcon-Perez JM, Fromenty B, Garcia-Ruiz C, Grove JI, Konu O, Kranendonk M, Kullak-Ublick GA, Miranda JP, Remesal-Doblado A, Sancho-Bru P, Nelson L, Andrade RJ, Daly AK, Fernandez-Checa JC. Roadmap to DILI research in Europe. A proposal from COST action ProEuroDILINet. Pharmacol Res 2024; 200:107046. [PMID: 38159783 DOI: 10.1016/j.phrs.2023.107046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 01/03/2024]
Abstract
In the current article the aims for a constructive way forward in Drug-Induced Liver Injury (DILI) are to highlight the most important priorities in research and clinical science, therefore supporting a more informed, focused, and better funded future for European DILI research. This Roadmap aims to identify key challenges, define a shared vision across all stakeholders for the opportunities to overcome these challenges and propose a high-quality research program to achieve progress on the prediction, prevention, diagnosis and management of this condition and impact on healthcare practice in the field of DILI. This will involve 1. Creation of a database encompassing optimised case report form for prospectively identified DILI cases with well-characterised controls with competing diagnoses, biological samples, and imaging data; 2. Establishing of preclinical models to improve the assessment and prediction of hepatotoxicity in humans to guide future drug safety testing; 3. Emphasis on implementation science and 4. Enhanced collaboration between drug-developers, clinicians and regulatory scientists. This proposed operational framework will advance DILI research and may bring together basic, applied, translational and clinical research in DILI.
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Affiliation(s)
- M I Lucena
- Servicios de Aparato Digestivo y Farmacología Clínica, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Universidad de Málaga, Málaga, Spain; Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain; Plataforma de Investigación Clínica y Ensayos Clínicos UICEC-IBIMA, Plataforma ISCIII de Investigación Clínica, Madrid, Spain.
| | - M Villanueva-Paz
- Servicios de Aparato Digestivo y Farmacología Clínica, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Universidad de Málaga, Málaga, Spain; Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
| | - I Alvarez-Alvarez
- Servicios de Aparato Digestivo y Farmacología Clínica, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Universidad de Málaga, Málaga, Spain; Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
| | - G P Aithal
- Nottingham Digestive Diseases Centre, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, United Kingdom; NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, United Kingdom
| | - E S Björnsson
- Faculty of Medicine, University of Iceland, Department of Gastroenterology and Hepatology, Landspitali University Hospital, Reykjavik, Iceland
| | - G Cakan-Akdogan
- Izmir Biomedicine and Genome Center, Izmir, Turkey. Department of Medical Biology, Faculty of Medicine, Dokuz Eylül University, Izmir, Turkey
| | - F J Cubero
- Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain; Department of Immunology, Ophthalmology and ORL, Complutense University School of Medicine, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - F Esteves
- Center for Toxicogenomics and Human Health (ToxOmics), NMS | FCM, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - J M Falcon-Perez
- Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain; Exosomes Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio, Bizkaia, 48160, Spain. IKERBASQUE, Basque Foundation for Science, Bilbao, Bizkaia 48009, Spain
| | - B Fromenty
- INSERM, Univ Rennes, INRAE, Institut NUMECAN (Nutrition Metabolisms and Cancer) UMR_A 1341, UMR_S 1317, F-35000 Rennes, France
| | - C Garcia-Ruiz
- Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. University of Barcelona, Barcelona, Spain; Department of Cell Death and Proliferation, Institute of Biomedical Research of Barcelona (IIBB), CSIC, Barcelona, Spain
| | - J I Grove
- Nottingham Digestive Diseases Centre, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, United Kingdom; NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, United Kingdom
| | - O Konu
- Department of Molecular Biology and Genetics, Faculty of Science, Bilkent University, Ankara, Turkey; Interdisciplinary Neuroscience Program, Bilkent University, Ankara, Turkey; UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, Turkey
| | - M Kranendonk
- Center for Toxicogenomics and Human Health (ToxOmics), NMS | FCM, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - G A Kullak-Ublick
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, University of Zurich, Zurich, Switzerland; CMO & Patient Safety, Global Drug Development, Novartis Pharma, Basel, Switzerland
| | - J P Miranda
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - A Remesal-Doblado
- Servicios de Aparato Digestivo y Farmacología Clínica, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Universidad de Málaga, Málaga, Spain
| | - P Sancho-Bru
- Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. University of Barcelona, Barcelona, Spain
| | - L Nelson
- Institute for Bioengineering, School of Engineering, Faraday Building, The University of Edinburgh, Scotland, UK
| | - R J Andrade
- Servicios de Aparato Digestivo y Farmacología Clínica, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Universidad de Málaga, Málaga, Spain; Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
| | - A K Daly
- Translational & Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - J C Fernandez-Checa
- Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. University of Barcelona, Barcelona, Spain; Department of Cell Death and Proliferation, Institute of Biomedical Research of Barcelona (IIBB), CSIC, Barcelona, Spain; Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
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Ponce D, Rodríguez F, Miranda JP, Binder AM, Santos JL, Michels KB, Cutler GB, Pereira A, Iñiguez G, Mericq V. Differential methylation pattern in pubertal girls associated with biochemical premature adrenarche. Epigenetics 2023; 18:2200366. [PMID: 37053179 PMCID: PMC10114989 DOI: 10.1080/15592294.2023.2200366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023] Open
Abstract
Biochemical premature adrenarche is defined by elevated serum DHEAS [≥40 μg/dL] before age 8 y in girls. This condition is receiving more attention due to its association with obesity, hyperinsulinemia, dyslipidemia, and polycystic ovary syndrome. Nevertheless, the link between early androgen excess and these risk factors remains unknown. Epigenetic modifications, and specifically DNA methylation, have been associated with the initiation and progression of numerous disorders, including obesity and insulin resistance. The aim of this study was to determine if prepubertal androgen exposure is associated with a different methylation profile in pubertal girls. Eighty-six healthy girls were studied. At age 7 y, anthropometric measurements were begun and DHEAS levels were determined. Girls were classified into Low DHEAS (LD) [<42 μg/dL] and High DHEAS (HD) [≥42 μg/dL] groups. At Tanner stages 2 and 4 a DNA methylation microarray was performed to identify differentially methylated CpG positions (DMPs) between HD and LD groups. We observed a differential methylation pattern between pubertal girls with and without biochemical PA. Moreover, a set of DNA methylation markers, selected by the LASSO method, successfully distinguished between HD and LD girls regardless of Tanner stage. Additionally, a subset of these markers were significantly associated with glucose-related measures such as insulin level, HOMA-IR, and glycaemia. This pilot study provides evidence consistent with the hypothesis that high DHEAS concentration, or its hormonally active metabolites, may induce a unique blood methylation signature in pubertal girls, and that this methylation pattern is associated with altered glucose metabolism.
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Affiliation(s)
- Diana Ponce
- Institute of Maternal and Child Research, School of Medicine, Universidad de Chile, Santiago, Chile
| | - Fernando Rodríguez
- Institute of Maternal and Child Research, School of Medicine, Universidad de Chile, Santiago, Chile
| | - José P Miranda
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile & Universidad de Chile, Santiago, Chile
| | - Alexandra M Binder
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, CA, USA
- Population Sciences in the Pacific Program (Cancer Epidemiology), University of Hawaii Cancer Center, University of Hawaii, Honolulu, HI, USA
| | - José L Santos
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Karin B Michels
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, CA, USA
| | | | - Ana Pereira
- Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile
| | - Germán Iñiguez
- Institute of Maternal and Child Research, School of Medicine, Universidad de Chile, Santiago, Chile
| | - Verónica Mericq
- Institute of Maternal and Child Research, School of Medicine, Universidad de Chile, Santiago, Chile
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Rocha CFD, Militão CM, Vrcibradic D, Van Sluys M, Pereira-Ribeiro J, Dias EJR, Marra RV, Bergallo HG, Winck GR, Galdino CAB, Cunha-Barros M, Kiefer MC, Telles FBS, Almeida-Santos P, Hatano FH, Menezes VA, Siqueira CC, Miranda JP, Maia-Carneiro T, Oliveira JCF. A summary of reptile and anuran amphibian species from Brazilian sandy coastal plains: 31 years of sampling efforts of the "Laboratório de Ecologia de Vertebrados, Universidade do Estado do Rio de Janeiro". BRAZ J BIOL 2021; 81:1144-1165. [PMID: 33111929 DOI: 10.1590/1519-6984.229617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 04/21/2020] [Indexed: 11/22/2022] Open
Abstract
Although currently there is already a set of studies regarding ecological aspects of some particular reptile and amphibian species living in Brazilian sandy coastal plains (including the so-called "restinga" and "campo nativo" habitats), there is comparatively few information on the species composition usually associated to these environments. During 31 years (1988-2019) of herpetological studies carried out in sandy coastal plains environments by our research team of the Laboratory of Vertebrate Ecology (Department of Ecology, Universidade do Estado do Rio de Janeiro, in Rio de Janeiro Brazil) we have surveyed reptile and amphibian communities and performed different studies with similar methods in 70 sites from 10 different states along the Brazilian coast. Our surveys resulted in records of 87 species of reptile (five turtles, two crocodylians, six amphisbaenians, 36 lizards and 39 snakes) from 24 families, and 77 species of anuran amphibians from nine families. We have studied multiple natural history topics for anurans and reptiles which resulted in the publication of some specific ecological studies, especially regarding some species, encompassing population and community ecology, foraging and feeding habits, species activity, thermoregulation, reproduction, use of microhabitats, and parasitism by ecto and endoparasites. Our results along these three decades have also contributed for the description of four new lizard species (Ameivula nativo, Glaucomastix littoralis, G. abaetensis and G. itabaianensis). Our studies constitute an important contribution to the knowledge of the ecology of anuran amphibians and reptiles in these ecosystems, as well as to the conservation of sandy coastal plains environment. The checklist presented in this study, based on our records of sandy coastal plains herpetofauna, provides for many localities along the Brazilian coast, the needed knowledge on species occurrence, including the presence of endemic and/or endangered species, which can be of value for many conservation actions.
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Affiliation(s)
- C F D Rocha
- Universidade do Estado do Rio de Janeiro - UERJ, Instituto de Biologia Roberto de Alcantara Gomes, Departamento de Ecologia, Laboratório de Ecologia de Vertebrados, Rio de Janeiro, RJ, Brasil
| | - C M Militão
- Universidade do Estado do Rio de Janeiro - UERJ, Instituto de Biologia Roberto de Alcantara Gomes, Departamento de Ecologia, Laboratório de Ecologia de Vertebrados, Rio de Janeiro, RJ, Brasil
| | - D Vrcibradic
- Universidade Federal do Estado do Rio de Janeiro - UNIRIO, Instituto de Biociências, Rio de Janeiro, RJ, Brasil
| | - M Van Sluys
- Universidade do Estado do Rio de Janeiro - UERJ, Instituto de Biologia Roberto de Alcantara Gomes, Departamento de Ecologia, Laboratório de Ecologia de Vertebrados, Rio de Janeiro, RJ, Brasil
| | - J Pereira-Ribeiro
- Universidade do Estado do Rio de Janeiro - UERJ, Instituto de Biologia Roberto de Alcantara Gomes, Departamento de Ecologia, Laboratório de Ecologia de Vertebrados, Rio de Janeiro, RJ, Brasil
| | - E J R Dias
- Universidade Federal de Sergipe - UFS,Laboratório de Biologia e Ecologia de Vertebrados, Departamento de Biociências, Itabaiana, SE, Brasil
| | - R V Marra
- Grupo de Apoio Técnico Especializado - GATE, Ministério Público do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - H G Bergallo
- Universidade do Estado do Rio de Janeiro - UERJ, Instituto de Biologia Roberto de Alcantara Gomes, Departamento de Ecologia, Laboratório de Ecologia de Vertebrados, Rio de Janeiro, RJ, Brasil
| | - G R Winck
- Université Grenoble Alpes, Laboratoire d'Ecologie Alpine, Grenoble, France
| | - C A B Galdino
- Pontifícia Universidade Católica de Minas Gerais - PUCMG, Programa de Pós-graduação em Biologia de Vertebrados, Belo Horizonte, MG, Brasil
| | - M Cunha-Barros
- Universidade Federal do Rio de Janeiro - UFRJ, Departamento de Ecologia, Instituto de Biologia, Laboratório de Ecologia Aplicada, Rio de Janeiro, RJ, Brasil
| | - M C Kiefer
- Universidade Federal Fluminense - UFF, Departamento de Biologia Geral, Instituto de Biologia, Niterói, RJ, Brasil
| | - F B S Telles
- Universidade do Estado do Rio de Janeiro - UERJ, Instituto de Biologia Roberto de Alcantara Gomes, Departamento de Ecologia, Laboratório de Ecologia de Vertebrados, Rio de Janeiro, RJ, Brasil
| | - P Almeida-Santos
- Universidade do Estado do Rio de Janeiro - UERJ, Instituto de Biologia Roberto de Alcantara Gomes, Departamento de Ecologia, Laboratório de Ecologia de Vertebrados, Rio de Janeiro, RJ, Brasil
| | - F H Hatano
- Universidade Federal Rural da Amazônia - UFRA, Instituto Socioambiental e dos Recursos Hídricos, Belém, PA, Brasil
| | - V A Menezes
- Fundação Centro Universitário Estadual da Zona Oeste - UEZO, Unidade de Biologia, Rio de Janeiro, RJ, Brasil
| | - C C Siqueira
- Universidade do Estado do Rio de Janeiro - UERJ, Instituto de Biologia Roberto de Alcantara Gomes, Departamento de Ecologia, Laboratório de Ecologia de Vertebrados, Rio de Janeiro, RJ, Brasil
| | - J P Miranda
- Universidade Federal do Maranhão - UFMA, Centro de Ciências Agrárias e Ambientais, Laboratório de Herpetologia, Chapadinha, MA, Brasil
| | - T Maia-Carneiro
- Universidade do Estado do Rio de Janeiro - UERJ, Instituto de Biologia Roberto de Alcantara Gomes, Departamento de Ecologia, Laboratório de Ecologia de Vertebrados, Rio de Janeiro, RJ, Brasil
| | - J C F Oliveira
- Universidade do Estado do Rio de Janeiro - UERJ, Instituto de Biologia Roberto de Alcantara Gomes, Departamento de Ecologia, Laboratório de Ecologia de Vertebrados, Rio de Janeiro, RJ, Brasil
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Miranda JP, Osorio J, Videla M, Angel G, Camponovo R, Henríquez-Henríquez M. Analytical and Clinical Validation for RT-qPCR Detection of SARS-CoV-2 Without RNA Extraction. Front Med (Lausanne) 2020; 7:567572. [PMID: 33178714 PMCID: PMC7593567 DOI: 10.3389/fmed.2020.567572] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 06/02/2020] [Accepted: 09/14/2020] [Indexed: 11/29/2022] Open
Abstract
Background: The recent COVID-19 pandemic has posed an unprecedented challenge to laboratory diagnosis, based on the amplification of SARS-CoV-2 RNA. With global contagion figures exceeding 4 million persons, the shortage of reagents for RNA extraction represents a bottleneck for testing globally. We present the validation results for an RT-qPCR protocol without prior RNA extraction. Due to its simplicity, this protocol is suitable for widespread application in resource-limited settings. Methods: Optimal direct protocol was selected by comparing RT-qPCR performance under a set of thermal (65, 70, and 95° for 5, 10, and 30 min) and amplification conditions (3 or 3.5 uL loading volume; 2 commercial RT-qPCR kits with a limit of detection below 10 copies/reaction) in nasopharyngeal swabs stored at 4°C in sterile Weise's buffer pH 7.2. The selected protocol was evaluated for classification concordance with a standard protocol (automated RNA extraction) in 130 routine samples and 50 historical samples with Cq values near to the clinical decision limit. Results: Optimal selected conditions for direct protocol were: thermal shock at 70°C for 10 min, loading 3.5 ul in the RT-qPCR. Prospective evaluation in 130 routine samples showed a 100% classification concordance with the standard protocol. The evaluation in historical samples, selected because their Cqs were at the clinical decision limit, showed 94% concordance with our confirmatory standard, which includes manual RNA extraction. Conclusions : Our results validate the use of this direct RT-qPCR protocol as a safe alternative for SARS-CoV-2 diagnosis in the case of a shortage of reagents for RNA extraction, with minimal clinical impact.
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Affiliation(s)
- José P. Miranda
- ELSA Clinical Laboratory, IntegraMedica, part of Bupa, Providencia, Santiago, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile & Universidad de Chile, Santiago, Chile
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Javiera Osorio
- ELSA Clinical Laboratory, IntegraMedica, part of Bupa, Providencia, Santiago, Chile
| | - Mauricio Videla
- ELSA Clinical Laboratory, IntegraMedica, part of Bupa, Providencia, Santiago, Chile
| | - Gladys Angel
- ELSA Clinical Laboratory, IntegraMedica, part of Bupa, Providencia, Santiago, Chile
| | - Rossana Camponovo
- ELSA Clinical Laboratory, IntegraMedica, part of Bupa, Providencia, Santiago, Chile
| | - Marcela Henríquez-Henríquez
- ELSA Clinical Laboratory, IntegraMedica, part of Bupa, Providencia, Santiago, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile & Universidad de Chile, Santiago, Chile
- Millennium Nucleus in Cardiovascular Magnetic Resonance, Millennium Science Initiative Program, ANID, Santiago, Chile
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Berkowitz L, Pardo-Roa C, Salazar GA, Salazar-Echegarai F, Miranda JP, Ramírez G, Chávez JL, Kalergis AM, Bueno SM, Álvarez-Lobos M. Mucosal Exposure to Cigarette Components Induces Intestinal Inflammation and Alters Antimicrobial Response in Mice. Front Immunol 2019; 10:2289. [PMID: 31608070 PMCID: PMC6773925 DOI: 10.3389/fimmu.2019.02289] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [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: 02/25/2019] [Accepted: 09/10/2019] [Indexed: 12/15/2022] Open
Abstract
The main environmental risk factor associated with the development of Crohn's disease (CD) is cigarette smoking. Although the mechanism is still unknown, some studies have shown that cigarette exposure affects the intestinal barrier of the small bowel. Among the factors that may be involved in this process are Paneth cells. These specialized epithelial cells are located into the small intestine, and they are able to secrete antimicrobial peptides, having an essential role in the control of the growth of microorganisms. Alterations in its function are associated with inflammatory processes, such as CD. To study how cigarette components impact ileum homeostasis and Paneth cells integrity, we used intragastric administration of cigarette smoke condensate (CSC) in mice. Our results showed that inflammation was triggered after mucosal exposure of CSC, which induced particular alterations in Paneth cells granules, antimicrobial peptide production, and a reduction of bactericidal capacity. In fact, exposure to CSC generated an imbalance in the fecal bacterial population and increased the susceptibility of mice to develop ileal damage in response to bacterial infection. Moreover, our results obtained in mice unable to produce interleukin 10 (IL-10−/− mice) suggest that CSC treatment can induce a symptomatic enterocolitis with a pathological inflammation in genetically susceptible individuals.
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Affiliation(s)
- Loni Berkowitz
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.,Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Catalina Pardo-Roa
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Geraldyne A Salazar
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Francisco Salazar-Echegarai
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José P Miranda
- Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gigliola Ramírez
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José L Chávez
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.,Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alexis M Kalergis
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, Santiago, Chile.,Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Susan M Bueno
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Manuel Álvarez-Lobos
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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Tobar HE, Cataldo LR, González T, Rodríguez R, Serrano V, Arteaga A, Álvarez-Mercado A, Lagos CF, Vicuña L, Miranda JP, Pereira A, Bravo C, Aguilera CM, Eyheramendy S, Uauy R, Martínez Á, Gil Á, Francone O, Rigotti A, Santos JL. Identification and functional analysis of missense mutations in the lecithin cholesterol acyltransferase gene in a Chilean patient with hypoalphalipoproteinemia. Lipids Health Dis 2019; 18:132. [PMID: 31164121 PMCID: PMC6549291 DOI: 10.1186/s12944-019-1045-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 02/07/2019] [Accepted: 04/03/2019] [Indexed: 12/16/2022] Open
Abstract
Background Lecithin-cholesterol acyltransferase (LCAT) is a plasma enzyme that esterifies cholesterol in high- and low-density lipoproteins (HDL and LDL). Mutations in LCAT gene causes familial LCAT deficiency, which is characterized by very low plasma HDL-cholesterol levels (Hypoalphalipoproteinemia), corneal opacity and anemia, among other lipid-related traits. Our aim is to evaluate clinical/biochemical features of a Chilean family with a proband showing clinical signs of familial LCAT deficiency, as well as to identify and assess the functional effects of LCAT mutations. Methods An adult female proband with hypoalphalipoproteinemia, corneal opacity and mild anemia, as well as her first-degree relatives, were recruited for clinical, biochemical, genetic, in-silico and in-vitro LCAT analysis. Sequencing of exons and intron-exon boundaries was performed to identify mutations. Site-directed mutagenesis was carried out to generate plasmids containing cDNA with wild type or mutant sequences. Such expression vectors were transfected to HEK-239 T cells to asses the effect of LCAT variants in expression, synthesis, secretion and enzyme activity. In-silico prediction analysis and molecular modeling was also used to evaluate the effect of LCAT variants. Results LCAT sequencing identified rare p.V333 M and p.M404 V missense mutations in compound heterozygous state in the proband, as well the common synonymous p.L363 L variant. LCAT protein was detected in proband’s plasma, but with undetectable enzyme activity compared to control relatives. HEK-293 T transfected cells with vector expression plasmids containing either p.M404 V or p.V333 M cDNA showed detectable LCAT protein expression both in supernatants and lysates from cultured cells, but with much lower enzyme activity compared to cells transfected with the wild-type sequence. Bioinformatic analyses also supported a causal role of such rare variations in LCAT lack of function. Additionally, the proband carried the minor allele of the synonymous p.L363 L variant. However, this variant is unlikely to affect the clinical phenotype of the proband given its relatively high frequency in the Chilean population (4%) and its small putative effect on plasma HDL-cholesterol levels. Conclusion Genetic, biochemical, in vitro and in silico analyses indicate that the rare mutations p.M404 V and p.V333 M in LCAT gene lead to suppression of LCAT enzyme activity and cause clinical features of familial LCAT deficiency. Electronic supplementary material The online version of this article (10.1186/s12944-019-1045-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hugo E Tobar
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Luis R Cataldo
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Trinidad González
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ricardo Rodríguez
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Valentina Serrano
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Antonio Arteaga
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Carlos F Lagos
- Facultad de Medicina y Ciencia, Universidad San Sebastián, Campus Los Leones, Santiago, Chile
| | - Lucas Vicuña
- Departamento de Estadísticas, Facultad de Matemáticas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José P Miranda
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Carolina Bravo
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Concepción M Aguilera
- Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology "José Mataix", Center of Biomedical Research, University of Granada, Granada, Spain
| | - Susana Eyheramendy
- Departamento de Estadísticas, Facultad de Matemáticas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ricardo Uauy
- INTA, Universidad de Chile, Santiago, Chile.,División de Pediatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Ángel Gil
- INYTA, University of Granada, Granada, Spain
| | - Omar Francone
- Pfizer Global Research and Development, San Diego, USA
| | - Attilio Rigotti
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.,Centro de Nutrición Molecular y Enfermedades Crónicas, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José L Santos
- Department of Nutrition, Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.
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7
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Méndez-Giménez L, Becerril S, Camões SP, da Silva IV, Rodrigues C, Moncada R, Valentí V, Catalán V, Gómez-Ambrosi J, Miranda JP, Soveral G, Frühbeck G, Rodríguez A. Role of aquaporin-7 in ghrelin- and GLP-1-induced improvement of pancreatic β-cell function after sleeve gastrectomy in obese rats. Int J Obes (Lond) 2017; 41:1394-1402. [PMID: 28584298 DOI: 10.1038/ijo.2017.135] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 05/06/2017] [Accepted: 05/25/2017] [Indexed: 01/24/2023]
Abstract
BACKGROUND/OBJECTIVES Glycerol is a key metabolite for lipid accumulation in insulin-sensitive tissues as well as for pancreatic insulin secretion. We examined the role of aquaporin-7 (AQP7), the main glycerol channel in β-cells, and AQP12, an aquaporin related to pancreatic damage, in the improvement of pancreatic function and steatosis after sleeve gastrectomy in diet-induced obese rats. SUBJECTS/METHODS Male Wistar obese rats (n=125) were subjected to surgical (sham operation and sleeve gastrectomy) or dietary (pair-fed to the amount of food eaten by sleeve-gastrectomized animals) interventions. The tissue distribution and expression of AQPs in the rat pancreas were analyzed by real-time PCR, western blotting and immunohistochemistry. The effect of ghrelin isoforms and glucagon-like peptide 1 (GLP-1) on insulin secretion, triacylglycerol (TG) accumulation and AQP expression was determined in vitro in RIN-m5F β-cells. RESULTS Sleeve gastrectomy reduced pancreatic β-cell apoptosis, steatosis and insulin secretion. Lower ghrelin and higher GLP-1 concentrations were also found after bariatric surgery. Acylated and desacyl ghrelin increased TG content, whereas GLP-1 increased insulin release in RIN-m5F β-cells. Sleeve gastrectomy was associated with an upregulation of AQP7 together with a normalization of the increased AQP12 levels in the rat pancreas. Interestingly, ghrelin and GLP-1 repressed AQP7 and AQP12 expression in RIN-m5F β-cells. AQP7 protein was negatively correlated with intracellular lipid accumulation in acylated ghrelin-treated cells and with insulin release in GLP-1-stimulated β-cells. CONCLUSIONS AQP7 upregulation in β-cells after sleeve gastrectomy contributes, in part, to the improvement of pancreatic steatosis and insulin secretion by increasing intracellular glycerol used for insulin release triggered by GLP-1 rather than for ghrelin-induced TG biosynthesis.
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Affiliation(s)
- L Méndez-Giménez
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain.,CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
| | - S Becerril
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain.,CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
| | - S P Camões
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisboa, Portugal
| | - I V da Silva
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisboa, Portugal
| | - C Rodrigues
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisboa, Portugal
| | - R Moncada
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain.,Department of Anesthesia, Clínica Universidad de Navarra, Pamplona, Spain
| | - V Valentí
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain.,Department of Surgery, Clínica Universidad de Navarra, Pamplona, Spain
| | - V Catalán
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain.,CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
| | - J Gómez-Ambrosi
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain.,CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
| | - J P Miranda
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisboa, Portugal
| | - G Soveral
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisboa, Portugal
| | - G Frühbeck
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain.,CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain.,Department of Endocrinology &Nutrition, Clínica Universidad de Navarra, Pamplona, Spain
| | - A Rodríguez
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain.,CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
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Cipriano M, Correia JC, Camões SP, Oliveira NG, Cruz P, Cruz H, Castro M, Ruas JL, Santos JM, Miranda JP. The role of epigenetic modifiers in extended cultures of functional hepatocyte-like cells derived from human neonatal mesenchymal stem cells. Arch Toxicol 2016; 91:2469-2489. [PMID: 27909741 DOI: 10.1007/s00204-016-1901-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 11/24/2016] [Indexed: 01/06/2023]
Abstract
The development of predictive in vitro stem cell-derived hepatic models for toxicological drug screening is an increasingly important topic. Herein, umbilical cord tissue-derived mesenchymal stem cells (hnMSCs) underwent hepatic differentiation using an optimized three-step core protocol of 24 days that mimicked liver embryogenesis with further exposure to epigenetic markers, namely the histone deacetylase inhibitor trichostatin A (TSA), the cytidine analogue 5-azacytidine (5-AZA) and dimethyl sulfoxide (DMSO). FGF-2 and FGF-4 were also tested to improve endoderm commitment and foregut induction during Step 1 of the differentiation protocol, being HHEX expression increased with FGF-2 (4 ng/mL). DMSO (1%, v/v) when added at day 10 enhanced cell morphology, glycogen storage ability, enzymatic activity and induction capacity. Moreover, the stability of the hepatic phenotype under the optimized differentiation conditions was examined up to day 34. Our findings showed that hepatocyte-like cells (HLCs) acquired the ability to metabolize glucose, produce albumin and detoxify ammonia. Global transcriptional analysis of the HLCs showed a partial hepatic differentiation degree. Global analysis of gene expression in the different cells revealed shared expression of gene groups between HLCs and human primary hepatocytes (hpHeps) that were not observed between HepG2 and hpHeps. In addition, bioinformatics analysis of gene expression data placed HLCs between the HepG2 cell line and hpHeps and distant from hnMSCs. The enhanced hepatic differentiation observed was supported by the presence of the hepatic drug transporters OATP-C and MRP-2 and gene expression of the hepatic markers CK18, TAT, AFP, ALB, HNF4A and CEBPA; and by their ability to display stable UGT-, EROD-, ECOD-, CYP1A1-, CYP2C9- and CYP3A4-dependent activities at levels either comparable with or even higher than those observed in primary hepatocytes and HepG2 cells. Overall, an improvement of the hepatocyte-like phenotype was achieved for an extended culture time suggesting a role of the epigenetic modifiers in hepatic differentiation and maturation and presenting hnMSC-HLCs as an advantageous alternative for drug discovery and in vitro toxicology testing.
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Affiliation(s)
- M Cipriano
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - J C Correia
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - S P Camões
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - N G Oliveira
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - P Cruz
- ECBio S.A., Amadora, Portugal
| | - H Cruz
- ECBio S.A., Amadora, Portugal
| | - M Castro
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - J L Ruas
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | | | - J P Miranda
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal.
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9
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Braga AD, Miranda JP, Ferreira GM, Bilheiro RP, Duarte ID, Francischi JN, Klein A. Blockade of proteinase-activated receptor-4 inhibits the eosinophil recruitment induced by eotaxin-1 in the pleural cavity of mice. Pharmacology 2010; 86:224-30. [PMID: 20829647 DOI: 10.1159/000319751] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Accepted: 07/15/2010] [Indexed: 11/19/2022]
Abstract
OBJECTIVE AND DESIGN Although proteinase-activated receptor (PAR)-4 has been implicated in inflammation, its role in regulating eosinophil recruitment in response to chemoattractants has not yet been demonstrated. To investigate the contribution of proteinases and PAR-4 activation to eosinophil migration in response to eotaxin-1 or leukotriene B(4) (LTB(4)), the effects of aprotinin or PAR-4 antagonist trans-cinnamoyl-YPGKF-NH(2) (tcY-NH(2)) on eosinophil migration induced by these chemoattractants were investigated. METHODS BALB/c mice were pretreated with aprotinin or tcY-NH(2) (30 μg/mouse) prior to intrapleural injection of LTB(4) or eotaxin-1 and the number of infiltrating eosinophils was determined 48 h later. RESULTS Aprotinin (1 mg/kg) inhibited eosinophil recruitment induced by eotaxin-1 (p < 0.01), but not that induced by LTB(4). Moreover, tcY-NH(2) treatment inhibited eosinophil recruitment in response to eotaxin-1 (p < 0.01 by ANOVA/Tukey post-test). CONCLUSION These data suggest that aprotinin-inhibited proteinases participate in eosinophil migration induced by eotaxin-1 and that PAR-4 activation plays an important role in regulating this migration.
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Affiliation(s)
- A D Braga
- Departamento de Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
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Kanekar S, Miranda JP. Attribution as a function of agential distance in a causal chain. Genet Soc Gen Psychol Monogr 1998; 124:271-82. [PMID: 9679288] [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
The hypothesis that causality and blame will be differently affected by agential distance within a two-step causal chain was tested. A hypothetical medical accident was presented to 360 female college students in India, who gave causality, blame, or punishment judgments about either the proximal agent or the distal agent. The study had a 2 (proximal vs. distal agent) x 2 (high vs. low extenuation) x 2 (mild vs. severe outcome) x 3 (casuality, blame, or punishment judgments) fully crossed, between-subjects factorial design, with 15 participants per cell. In support of the basic hypothesis, more blame and punishment were assigned to the distal agent than to the proximal agent, whereas agential distance did not affect causal attribution. Extenuation was effective on causality and blame judgments only when the outcome was mild, and there was no effect of extenuation on punishment judgments, irrespective of outcome severity.
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Affiliation(s)
- S Kanekar
- Department of Health Care Professions, University of Phoenix, USA.
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11
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García A, Célis D, León M, León P, Macchiavello N, Miranda JP, Tassara R, Denegri M, Lorca M. [Clinical and epidemiological study of blood donors seropositive for Trypanosoma cruzi]. Rev Med Chil 1997; 125:905-10. [PMID: 9567394] [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: 02/07/2023]
Abstract
BACKGROUND The prevalence of positive antibodies for Chagas disease in a blood bank of a public hospital in Santiago is 1.2%. These positive individuals should be informed about their condition and further studied. AIM To perform a serological confirmation, an epidemiological and clinical assessment of blood donors seropositive for Chagas disease in a blood bank of Santiago. SUBJECTS AND METHODS One hundred eleven seropositive donors, detected between 1994 and 1996, were studied. Serological reactions were confirmed with ELISA and indirect immunofluorescence reactions. Those confirmed as positive were subjected to a clinical-epidemiological questionnaire, physical examination, EKG and barium enema or swallow according to symptoms. RESULTS Seventy individuals were confirmed as positive for Chagas disease. Most of them lived at least once in an endemic zone for Chagas disease or in a sun-dried clay brick house. Forty-percent of individuals knew reduviid bugs and 14% had been bitten by these insects. Twenty six percent of these subjects had an abnormal EKG (61% with bradycardia). No digestive diseases attributable to Chagas disease were detected. CONCLUSIONS The high prevalence of problems attributable to Chagas disease among seropositive blood donors underscores the need of an epidemiological follow up of these individuals.
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Affiliation(s)
- A García
- Departamento de Parasitología, Facultad de Medicina, Universidad de Chile, Santiago, Chile
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