Burnout
Vara, Natália
2009
Type
article
Creator
Publisher
Identifier
Catarino, Marisa (2021) - Lavado broncoalveolar: análise de perfis celulares em doenças do interstício pulmonar. HIGEIA: Revista Científica da Escola Superior de Saúde Dr. Lopes Dias. ISSN 2184-5565. Ano III, vol. 6, n.º 2, p.41-49.
2184-5565
Title
Lavado broncoalveolar: análise de perfis celulares em doenças do interstício pulmonar
Bronchoalveolar lavage: analysis of cell profiles in interstital lung diseases
Bronchoalveolar lavage: analysis of cell profiles in interstital lung diseases
Subject
Lavagem broncoalveolar
Citometria de fluxo
Contagem de células
Bronchoalveolar lavage
Flow cytometry
Cell count.
Citometria de fluxo
Contagem de células
Bronchoalveolar lavage
Flow cytometry
Cell count.
Date
2022-08-03T12:47:58Z
2022-08-03T12:47:58Z
2021
2022-08-03T12:47:58Z
2021
Description
Introdução A lavagem broncoalveolar é uma técnica aceite como meio complementar de diagnóstico em várias patologias do pulmão. Nas últimas três décadas, vários trabalhos confirmaram que ela reflete a
celularidade existente no alvéolo e no interstício. Objetivos A fim de compreender melhor a composição
dos diferentes perfis celulares, que podem ser encontrados no lavado broncoalveolar e tentar apurar o interesse preditivo deste teste, na evolução e prognóstico das doenças do interstício pulmonar, foram estudadas várias doenças tais como a sarcoidose, a pneumonia, a fibrose pulmonar, a tuberculose, a alveolite, as neoplasias e o lúpus eritematoso sistémico. Material e Métodos Foi efetuada a determinação do número de células/mL, da % de linfócitos, da determinação da razão CD4/CD8 e da observação da morfologia celular, durante o período compreendido entre Março de 2010 e Março de 2011. A determinação dos perfis celulares
e a observação da morfologia foram executados em citoesfregaços corados com a coloração de Leishman.
A razão entre as subpopulações linfocitárias CD4/CD8 foi determinada por citometria de fluxo. Resultados
Nos doentes com sarcoidose encontraram se diferenças estatisticamente significativas relativamente ao número de células encontrados no lavado broncoalveolar (296,4x106/mL) e nº de leucócitos no sangue periférico (7,8x106/mL) quando comparados com os valores de referência. As patologias que recorreram ao estudo do lavado broncoalveolar, apresentaram todas um aumento do nº de células, sendo a pneumonia a que apresentou o valor mais elevado (830x106/mL). A % de linfócitos (20,4%) e a razão CD4/CD8 (6,9) encontradas no grupo com diagnóstico de sarcoidose foram superiores aos valores normais (respetivamente
9,4% e 1,7). A fibrose pulmonar apresentou uma razão CD4/CD8 (0,8) inferior ao normal (6,9), com p=0,002. Discussão/Conclusão: Quando interpretado no contexto clínico e radiológico e associado a outros exames complementares de diagnóstico, o lavado broncoalveolar, acompanhado da correta informação clínica e dos dados fornecidos pela citometria de fluxo e pela análise morfológica, fornece uma informação valiosa para
o estabelecimento do diagnóstico das doenças do interstício pulmonar.
Abstract: Introduction Bronchoalveolar lavage is a technique accepted as a complementary diagnostic in various diseases of the lung. In the last four decades, several studies confirmed that reflects the existing cellularity in alveolar and interstitial area. Objectives In order to better understand the composition of the different cellular profiles that can be found in bronchoalveolar lavage and to try to establish the predictive interest of this test in the evolution and prognosis of interstitial lung diseases, several diseases were studied, such as sarcoidosis, pneumonia, pulmonary fibrosis, tuberculosis, alveolitis, neoplasms and systemic lupus erythematosus. Methods Was performed the determination of the number of cells /ml, % of lymphocytes, determination of the CD4/CD8 ratio and the observation of cell morphology. The determination of cell profiles and observation of the morphology were performed on cytospin smear stained with Leishman stain. The ratio between the CD4/CD8 lymphocyte populations was determined by flow cytometry. ResultsThe pathologies studied showed an increase in the number of cells, pneumonia being the one with the highest value (830x106/mL). In the group of patients with sarcoidosis, statistically significant differences were found regarding the number of cells found in the bronchoalveolar lavage (296,4x106/mL) and the number of leukocytes in the peripheral blood (7,8x106/mL) when compared to the reference values. The % of lymphocytes (20,4%) and the CD4/CD8 ratio (6.9) found in the group with sarcoidosis were higher than the normal values (9,4% and 1.7). Pulmonary fibrosis had a CD4/CD8 ratio (0.8) lower than normal (6.9), with p=0.002. Discussion/Conclusions When interpreted in the clinical and radiological context and associated with other diagnostic exams, bronchoalveolar lavage, accompanied by the correct clinical information and data provided by flow cytometry and morphological analysis provides valuable information for establishing the diagnosis of interstitial lung diseases.
info:eu-repo/semantics/publishedVersion
Abstract: Introduction Bronchoalveolar lavage is a technique accepted as a complementary diagnostic in various diseases of the lung. In the last four decades, several studies confirmed that reflects the existing cellularity in alveolar and interstitial area. Objectives In order to better understand the composition of the different cellular profiles that can be found in bronchoalveolar lavage and to try to establish the predictive interest of this test in the evolution and prognosis of interstitial lung diseases, several diseases were studied, such as sarcoidosis, pneumonia, pulmonary fibrosis, tuberculosis, alveolitis, neoplasms and systemic lupus erythematosus. Methods Was performed the determination of the number of cells /ml, % of lymphocytes, determination of the CD4/CD8 ratio and the observation of cell morphology. The determination of cell profiles and observation of the morphology were performed on cytospin smear stained with Leishman stain. The ratio between the CD4/CD8 lymphocyte populations was determined by flow cytometry. ResultsThe pathologies studied showed an increase in the number of cells, pneumonia being the one with the highest value (830x106/mL). In the group of patients with sarcoidosis, statistically significant differences were found regarding the number of cells found in the bronchoalveolar lavage (296,4x106/mL) and the number of leukocytes in the peripheral blood (7,8x106/mL) when compared to the reference values. The % of lymphocytes (20,4%) and the CD4/CD8 ratio (6.9) found in the group with sarcoidosis were higher than the normal values (9,4% and 1.7). Pulmonary fibrosis had a CD4/CD8 ratio (0.8) lower than normal (6.9), with p=0.002. Discussion/Conclusions When interpreted in the clinical and radiological context and associated with other diagnostic exams, bronchoalveolar lavage, accompanied by the correct clinical information and data provided by flow cytometry and morphological analysis provides valuable information for establishing the diagnosis of interstitial lung diseases.
info:eu-repo/semantics/publishedVersion
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openAccess
http://creativecommons.org/licenses/by/4.0/
http://creativecommons.org/licenses/by/4.0/
Language
por
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