Monodisperse ferrimagnetic iron-oxide particles of 1.4 mum geometric diamet
er were used to study alveolar macrophage functions (phagocytosis, phagosom
e transport) and cytoskeletal integrity in healthy subjects and in patients
with idiopathic pulmonary fibrosis as well as in cultured macrophages. Dys
functions in phagocytosis, in phagosome transport and cytoskeletal integrit
y correlated with an impaired alveolar clearance and could be induced in vi
tro by cytoskeletal drugs. (C) 2001 Elsevier Science B.V. All rights reserv
ed.