Clinical-pathological characterization, viral genotipification and genetic heterogeneity as risk determinants in COVID-19: Study design and initial findings

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Introduction: The objective of the study is to describe the clinical, pathological, virological and genetic characteristics ofthe immune response of patients diagnosed with SARS-CoV-2 infection and its relationship with the unfavorable courseof the disease. Methods: Descriptive, relational, longitud...

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Autores: Mac Dowall, Mauricio Postigo, Barrionuevo-Poquet, Alejandro, Carnero-Fuentes, Oscar, Pareja-Begazo, Guido, Coayla-Cano, Claudio, Gallo-Lopez, Aly, De La Cruz-Vargas, Jhony A.
Formato: artículo
Fecha de Publicación:2020
Institución:Universidad Ricardo Palma
Repositorio:Revista URP - Revista de la Facultad de Medicina Humana
Lenguaje:español
inglés
OAI Identifier:oai:oai.revistas.urp.edu.pe:article/3040
Enlace del recurso:http://revistas.urp.edu.pe/index.php/RFMH/article/view/3040
Nivel de acceso:acceso abierto
Materia:SARS-COV-2
COVID-19
Pathology
Inmunohistoquímica
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network_name_str Revista URP - Revista de la Facultad de Medicina Humana
dc.title.none.fl_str_mv Clinical-pathological characterization, viral genotipification and genetic heterogeneity as risk determinants in COVID-19: Study design and initial findings
Caracterización clínico-patológica, genotipificación viral y heterogeneidad genética como determinantes de riesgo en COVID-19: Diseño del estudio y hallazgos iniciales
title Clinical-pathological characterization, viral genotipification and genetic heterogeneity as risk determinants in COVID-19: Study design and initial findings
spellingShingle Clinical-pathological characterization, viral genotipification and genetic heterogeneity as risk determinants in COVID-19: Study design and initial findings
Mac Dowall, Mauricio Postigo
SARS-COV-2
COVID-19
Pathology
Inmunohistoquímica
title_short Clinical-pathological characterization, viral genotipification and genetic heterogeneity as risk determinants in COVID-19: Study design and initial findings
title_full Clinical-pathological characterization, viral genotipification and genetic heterogeneity as risk determinants in COVID-19: Study design and initial findings
title_fullStr Clinical-pathological characterization, viral genotipification and genetic heterogeneity as risk determinants in COVID-19: Study design and initial findings
title_full_unstemmed Clinical-pathological characterization, viral genotipification and genetic heterogeneity as risk determinants in COVID-19: Study design and initial findings
title_sort Clinical-pathological characterization, viral genotipification and genetic heterogeneity as risk determinants in COVID-19: Study design and initial findings
dc.creator.none.fl_str_mv Mac Dowall, Mauricio Postigo
Barrionuevo-Poquet, Alejandro
Carnero-Fuentes, Oscar
Pareja-Begazo, Guido
Coayla-Cano, Claudio
Gallo-Lopez, Aly
De La Cruz-Vargas, Jhony A.
author Mac Dowall, Mauricio Postigo
author_facet Mac Dowall, Mauricio Postigo
Barrionuevo-Poquet, Alejandro
Carnero-Fuentes, Oscar
Pareja-Begazo, Guido
Coayla-Cano, Claudio
Gallo-Lopez, Aly
De La Cruz-Vargas, Jhony A.
author_role author
author2 Barrionuevo-Poquet, Alejandro
Carnero-Fuentes, Oscar
Pareja-Begazo, Guido
Coayla-Cano, Claudio
Gallo-Lopez, Aly
De La Cruz-Vargas, Jhony A.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv SARS-COV-2
COVID-19
Pathology
Inmunohistoquímica
topic SARS-COV-2
COVID-19
Pathology
Inmunohistoquímica
dc.description.none.fl_txt_mv Introduction: The objective of the study is to describe the clinical, pathological, virological and genetic characteristics ofthe immune response of patients diagnosed with SARS-CoV-2 infection and its relationship with the unfavorable courseof the disease. Methods: Descriptive, relational, longitudinal and retrospective study based on the review of medicalrecords, taking post-mortem tru-cut biopsies of the lung and liver, taking blood samples and naso-oropharyngeal swabor endotracheal tube aspirate. In the first phase, the biopsies will be processed and studied with conventional andimmunohistochemical histology in the Pathological Anatomy service of the Carlos Seguín Escobedo National Hospitalin Arequipa, Peru. Results: Advanced mean age, male sex, and the presence of comorbidities were predominant indeceased patients. Lung biopsies showed predominantly the exudative and partially proliferative phases of diffuseand focal alveolar damage, associated primarily with intraalveolar macrophage hyperplasia with accumulation withinthe alveolar space-resembling desquamative pneumonia, as well as atypical binucleated intraalveolar pneumocytes,with eosinophilic nucleoli (similar to virocytes) in some cases. In the vast majority of cases, intravascular fibrin depositsassociated with the accumulation of inflammatory cells composed of neutrophils and monocytes, representingmicrothrombosis, were observed. Liver biopsies showed predominantly macrovesicular steatosis and in twocases microvesicular steatosis was observed. Additionally, varying degrees of necrosis and mild portal and lobularinflammation were observed. Conclusion: The clinical and pathological findings in this first report are consistent withprevious publications and confirm the pattern of diffuse alveolar damage associated with aggregates of intraalveolarmacrophages and microthrombosis; confirms in addition, macro and microvesicular hepatocytic steatosis, togetherwith variable degrees of necrosis.
Introducción: El objetivo del estudio es describir las características clínicas, patológicas, virológicas y genéticas de larespuesta inmune de los pacientes diagnosticados con infección por SARS-CoV-2 y su relación con el curso desfavorablede la enfermedad. Métodos: Estudio descriptivo, relacional, longitudinal y retrospectivo basado en la revisión dehistorias clínicas, toma de biopsias tru-cut post-mortem de pulmón e hígado, toma de muestras de sangre e hisopadonaso-orofaríngeo o de aspirado del tubo endotraqueal. En la primera fase las biopsias serán procesadas y estudiadascon histología convencional e inmunohistoquímica en el servicio de Anatomía Patológica del hospital NacionalCarlos Seguín Escobedo de Arequipa, Perú. Resultados: La edad media avanzada, el sexo masculino y la presencia decomorbilidades fue predominante en los pacientes fallecidos. Las biopsias pulmonares mostraron predominantementelas fases exudativa y parcialmente proliferativa del daño alveolar difuso y focal, asociada principalmente a unahiperplasia de macrófagos intraalveolares con acumulación dentro del espacio alveolar, semejando una neumoníadescamativa, así como neumocitos intraalveolares binucleados y atípicos, con nucléolos eosinofílicos (semejante avirocitos) en algunos casos. En la gran mayoría de casos se observaron depósitos de fibrina intravascular asociadaal acúmulo de células inflamatorias compuestas por neutrófilos y monocitos, representando microtrombosis. Lasbiopsias de hígado mostraron esteatosis predominantemente macrovesicular y en dos casos se observó esteatosismicrovesicular. Adicionalmente, se observaron diversos grados de necrosis e inflamación portal y lobular. Conclusión:Los hallazgos clínicos y patológicos en este primer reporte son consistentes con publicaciones previas y confirmanel patrón de daño alveolar difuso asociado a agregados de macrofagos intraalveolares y microtrombosis; ademasesteatosis macro y microvesicular hepatocitica, junto a grados variables de necrosis.
description Introduction: The objective of the study is to describe the clinical, pathological, virological and genetic characteristics ofthe immune response of patients diagnosed with SARS-CoV-2 infection and its relationship with the unfavorable courseof the disease. Methods: Descriptive, relational, longitudinal and retrospective study based on the review of medicalrecords, taking post-mortem tru-cut biopsies of the lung and liver, taking blood samples and naso-oropharyngeal swabor endotracheal tube aspirate. In the first phase, the biopsies will be processed and studied with conventional andimmunohistochemical histology in the Pathological Anatomy service of the Carlos Seguín Escobedo National Hospitalin Arequipa, Peru. Results: Advanced mean age, male sex, and the presence of comorbidities were predominant indeceased patients. Lung biopsies showed predominantly the exudative and partially proliferative phases of diffuseand focal alveolar damage, associated primarily with intraalveolar macrophage hyperplasia with accumulation withinthe alveolar space-resembling desquamative pneumonia, as well as atypical binucleated intraalveolar pneumocytes,with eosinophilic nucleoli (similar to virocytes) in some cases. In the vast majority of cases, intravascular fibrin depositsassociated with the accumulation of inflammatory cells composed of neutrophils and monocytes, representingmicrothrombosis, were observed. Liver biopsies showed predominantly macrovesicular steatosis and in twocases microvesicular steatosis was observed. Additionally, varying degrees of necrosis and mild portal and lobularinflammation were observed. Conclusion: The clinical and pathological findings in this first report are consistent withprevious publications and confirm the pattern of diffuse alveolar damage associated with aggregates of intraalveolarmacrophages and microthrombosis; confirms in addition, macro and microvesicular hepatocytic steatosis, togetherwith variable degrees of necrosis.
publishDate 2020
dc.date.none.fl_str_mv 2020-06-23
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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dc.identifier.none.fl_str_mv http://revistas.urp.edu.pe/index.php/RFMH/article/view/3040
10.25176/RFMH.v20i3.3040
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http://revistas.urp.edu.pe/index.php/RFMH/article/view/3040/3289
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publisher.none.fl_str_mv Universidad Ricardo Palma
dc.source.none.fl_str_mv Revista de la Facultad de Medicina Humana; Vol 20 No 3 (2020): Revista de la Facultad de Medicina Humana; 5
Revista de la Facultad de Medicina Humana; Vol. 20 Núm. 3 (2020): Revista de la Facultad de Medicina Humana; 5
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spelling Clinical-pathological characterization, viral genotipification and genetic heterogeneity as risk determinants in COVID-19: Study design and initial findingsCaracterización clínico-patológica, genotipificación viral y heterogeneidad genética como determinantes de riesgo en COVID-19: Diseño del estudio y hallazgos inicialesMac Dowall, Mauricio PostigoBarrionuevo-Poquet, AlejandroCarnero-Fuentes, OscarPareja-Begazo, GuidoCoayla-Cano, ClaudioGallo-Lopez, AlyDe La Cruz-Vargas, Jhony A.SARS-COV-2COVID-19PathologyInmunohistoquímicaIntroduction: The objective of the study is to describe the clinical, pathological, virological and genetic characteristics ofthe immune response of patients diagnosed with SARS-CoV-2 infection and its relationship with the unfavorable courseof the disease. Methods: Descriptive, relational, longitudinal and retrospective study based on the review of medicalrecords, taking post-mortem tru-cut biopsies of the lung and liver, taking blood samples and naso-oropharyngeal swabor endotracheal tube aspirate. In the first phase, the biopsies will be processed and studied with conventional andimmunohistochemical histology in the Pathological Anatomy service of the Carlos Seguín Escobedo National Hospitalin Arequipa, Peru. Results: Advanced mean age, male sex, and the presence of comorbidities were predominant indeceased patients. Lung biopsies showed predominantly the exudative and partially proliferative phases of diffuseand focal alveolar damage, associated primarily with intraalveolar macrophage hyperplasia with accumulation withinthe alveolar space-resembling desquamative pneumonia, as well as atypical binucleated intraalveolar pneumocytes,with eosinophilic nucleoli (similar to virocytes) in some cases. In the vast majority of cases, intravascular fibrin depositsassociated with the accumulation of inflammatory cells composed of neutrophils and monocytes, representingmicrothrombosis, were observed. Liver biopsies showed predominantly macrovesicular steatosis and in twocases microvesicular steatosis was observed. Additionally, varying degrees of necrosis and mild portal and lobularinflammation were observed. Conclusion: The clinical and pathological findings in this first report are consistent withprevious publications and confirm the pattern of diffuse alveolar damage associated with aggregates of intraalveolarmacrophages and microthrombosis; confirms in addition, macro and microvesicular hepatocytic steatosis, togetherwith variable degrees of necrosis.Introducción: El objetivo del estudio es describir las características clínicas, patológicas, virológicas y genéticas de larespuesta inmune de los pacientes diagnosticados con infección por SARS-CoV-2 y su relación con el curso desfavorablede la enfermedad. Métodos: Estudio descriptivo, relacional, longitudinal y retrospectivo basado en la revisión dehistorias clínicas, toma de biopsias tru-cut post-mortem de pulmón e hígado, toma de muestras de sangre e hisopadonaso-orofaríngeo o de aspirado del tubo endotraqueal. En la primera fase las biopsias serán procesadas y estudiadascon histología convencional e inmunohistoquímica en el servicio de Anatomía Patológica del hospital NacionalCarlos Seguín Escobedo de Arequipa, Perú. Resultados: La edad media avanzada, el sexo masculino y la presencia decomorbilidades fue predominante en los pacientes fallecidos. Las biopsias pulmonares mostraron predominantementelas fases exudativa y parcialmente proliferativa del daño alveolar difuso y focal, asociada principalmente a unahiperplasia de macrófagos intraalveolares con acumulación dentro del espacio alveolar, semejando una neumoníadescamativa, así como neumocitos intraalveolares binucleados y atípicos, con nucléolos eosinofílicos (semejante avirocitos) en algunos casos. En la gran mayoría de casos se observaron depósitos de fibrina intravascular asociadaal acúmulo de células inflamatorias compuestas por neutrófilos y monocitos, representando microtrombosis. Lasbiopsias de hígado mostraron esteatosis predominantemente macrovesicular y en dos casos se observó esteatosismicrovesicular. Adicionalmente, se observaron diversos grados de necrosis e inflamación portal y lobular. Conclusión:Los hallazgos clínicos y patológicos en este primer reporte son consistentes con publicaciones previas y confirmanel patrón de daño alveolar difuso asociado a agregados de macrofagos intraalveolares y microtrombosis; ademasesteatosis macro y microvesicular hepatocitica, junto a grados variables de necrosis.Universidad Ricardo Palma2020-06-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdftext/htmlapplication/pdftext/htmlhttp://revistas.urp.edu.pe/index.php/RFMH/article/view/304010.25176/RFMH.v20i3.3040Revista de la Facultad de Medicina Humana; Vol 20 No 3 (2020): Revista de la Facultad de Medicina Humana; 5Revista de la Facultad de Medicina Humana; Vol. 20 Núm. 3 (2020): Revista de la Facultad de Medicina Humana; 52308-05311814-5469reponame:Revista URP - Revista de la Facultad de Medicina Humanainstname:Universidad Ricardo Palmainstacron:URPspaenghttp://revistas.urp.edu.pe/index.php/RFMH/article/view/3040/3229http://revistas.urp.edu.pe/index.php/RFMH/article/view/3040/3243http://revistas.urp.edu.pe/index.php/RFMH/article/view/3040/3289http://revistas.urp.edu.pe/index.php/RFMH/article/view/3040/3290info:eu-repo/semantics/openAccess2021-06-02T16:10:24Zmail@mail.com -
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