Pulmonary granulocyte influx and impaired alveolar macrophage adenylyl cyclase responsiveness in developing respiratory distress.

Abstract:

:Alveolar macrophages have recently been postulated as being involved in the aetiology of adult respiratory distress syndrome (ARDS). To evaluate their role, basal cyclic AMP levels and responsiveness of adenylyl cyclase alveolar macrophages were determined at four intermediate stages of developing respiratory distress in piglets using a protocol with repeated lung lavage. Examination of alveolar cells recovered from the subsequent lavages reveals an influx of granulocytes (neutrophils and eosinophils) within 1 h of two intensive lung lavages. During the developing respiratory distress the basal cyclic AMPlevel of alveolar macrophages increases and adenylyl cyclase responsiveness to prostaglandin E(2) (PGE(2)) and isoprelanaline diminishes. The previously observed impairment of macrophage activity can then be explained at a subcellular level.

journal_name

Mediators Inflamm

authors

Amsterdam JG,Heijde RM,Grotjohan HP,Beusenberg FD

doi

10.1155/S0962935193000341

subject

Has Abstract

pub_date

1993-01-01 00:00:00

pages

247-51

issue

3

eissn

0962-9351

issn

1466-1861

journal_volume

2

pub_type

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