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Pulmonary mechanics and lung histology in acute lung injury induced by Bothrops jararaca venom.

Abstract：

:Pulmonary mechanics [static (Est) and dynamic (Edyn) elastances, resistive (DeltaP1) and viscoelastic pressures (DeltaP2)], histology, and bronchoalveolar lavage fluid (BALF) from BALB/c mice were analysed 1, 24, 48 and 72 h after intravenous injection of saline or Bothrops jararaca crude venom [0.3 (V0.3) or 1 (V1) microg.g(-1)]. Est, Edyn, and DeltaP2 increased at 1 h in both V groups, being significantly higher in V1 than in V0.3, decreasing progressively, reaching control values at 48 h in V0.3, but remaining altered in V1 at 72 h. DeltaP1 augmented in V1 at 1 h, returning to normal at 72 h. Histological changes in V0.3 group included interstitial oedema, alveolar collapse, and increased cellularity, which returned to normal at 48 h. These changes were more intense in V1 group, with alveolar oedema and haemorrhage. BALF showed time-dependent neutrophil influx in V0.3. In conclusion, venom led to time- and dose-dependent pulmonary mechanical changes, together with moderate inflammation in V0.3 and acute lung injury in V1.

journal_name

Respir Physiol Neurobiol

journal_title

Respiratory physiology & neurobiology

authors

Silveira KS,Boechem NT,do Nascimento SM,Murakami YL,Barboza AP,Melo PA,Castro P,de Moraes VL,Rocco PR,Zin WA

doi

10.1016/j.resp.2003.10.002

keywords:

subject

Has Abstract

pub_date

2004-01-15 00:00:00

pages

167-77

issue

2

eissn

1569-9048

issn

1878-1519

pii

S1569904803002532

journal_volume

139

pub_type

杂志文章

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