From the Institute of Biochemistry and Biophysics, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.
Abstract: (4216 Views)
The role of alveolar macrophages in the production of granulocyte/
macrophage colony-stimulating factor(s) by the rat lung was investigated.
Lavaged lungs, when incubated at proper weight per volume of culture
medium, produced the same amount of colony-stimulating factor as
unlavaged ones. Both lavaged and unlavaged lungs produced similar types
of colony-stimulating factor (s). Prolonged incubation of lavaged and
unlavaged lung tissues did not result in higher levels of activity beyond that
produced by 48 hrs of incubation. Alveolar macrophages recovered from the
lung did not produce colony-stimulating factors when they were cultured
unstimulated and under similar conditions as lung conditioned medium. The
results indicated that alveolar macrophages did not play a significant role in
colony stimulating factor (s) production by the lungs and when unstimulated,
they did not produce colony-stimulating factors directly.