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Estudo Geral
Article . 1991
Data sources: Estudo Geral
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Asbestose pulmonar: mecanismos celulares da sua patogenia

Authors: Teixeira, Ana Maria M. Botelho;

Asbestose pulmonar: mecanismos celulares da sua patogenia

Abstract

Pulmonary asbestosis is still one serious occupational disease ofour times. Although the clinical and epidemiological featu res ofthe disease are well caracterized, the cellular mechanisms involved are still poorly understood. Taking advantage ofall the information available on this subject, we tried to depict the several mechanisms involved in the answer ofthe deep lung to the inhalation ofasbestos jibers. ln the jirst part ofthis article we characterized the diferent kinds ofasbestos jibers as well as their patterns oftransport and deposition in the deep lung.ln the second part we discribed the possible cellular mechanisms underlying the pathogeny of pulmonary asbestosis. The e.fJect ofthe alveolar macrophages, polinuclear neuthrophils and the action oftheir mediators is discribed. Analysis of the bronco alveolar lavage jluid lynphocitary profile of pacients with pulmonary asbestosis is also discribed, revealing significant increase in the CD4/CD8 ratio.

A asbestose pulmonar continua a ser uma das doenças ocupacionais mais graves do nosso tempo. Apesar de clínica e epidemiologicamente bem caracterizada pouco se sabe ainda dos mecanismos celulares responsáveis pela sua ocorrência. Assim, a partir da informação até ao momento disponível sobre este assunto, tentámos delinear os vários mecanismos envolvidos na resposta do pulmão profundo à inalação de fibras de asbesto. Numa primeira parte caracterizam-se os vários tipos de fibras de asbesto existentes bem como os seus diferentes padrões de deposição e transporte. Numa segunda parte descrevem-se os possíveis mecanismos celulares envolvidos na patogenia da asbestose pulmonar, nomeadamente a acção dos macrófagos alveolares, dos neutrófilos e dos respectivos mediadores. A análise do perfil linfocitário de lavados bronco-alveolares de pacientes com asbestose é também descrita, salientando-se um acentuado aumento na relação CD4/CD8.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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Green