Respiratory changes in a murine model of spontaneous systemic lupus erythematosus.
Respir Physiol Neurobiol
; 153(1): 107-14, 2006 Aug.
Article
em En
| MEDLINE
| ID: mdl-16311080
ABSTRACT
The pathophysiology of systemic lupus erythematosus (SLE) has been very well described in many organs. However, the relation between extracellular matrix changes and lung dynamic mechanical behaviour deserves elucidation. To that end, pulmonary mechanics, lung morphometry and the amount of collagen and elastic fibres in the alveolar septa were analysed in mice with SLE [NZB/W (New Zealand Black/White) F1] and non-diseased NZW mice (control). Static (E(st)) and dynamic (E(dyn)) elastances, difference between dynamic and static elastances (DeltaE), airway resistance (R(aw)) and viscoelastic/inhomogeneous pressure (DeltaP(2)) were determined by the end-inflation occlusion method. Lungs were removed and prepared for histology. E(st), E(dyn), DeltaE and DeltaP(2) were higher in SLE than in control group, while R(aw) was similar in both groups. SLE group showed alveolar collapse and increased amount of elastic and collagen fibres. In conclusion, SLE mice showed an increase in elastic and viscoelastic/inhomogeneous pressures that was accompanied by deposition of collagen and elastic fibres in the alveolar septa.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Respiração
/
Mecânica Respiratória
/
Pulmão
/
Lúpus Eritematoso Sistêmico
Limite:
Animals
Idioma:
En
Revista:
Respir Physiol Neurobiol
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Brasil