Talc administration into the pleural cavity induces pleurodesis. To obtain
further insight into the inflammatory process that causes pleurodesis, the
cellular kinetics in the pleural space after the administration of talc was
studied, along with its relation to chemokine concentrations in the pleura
l fluid,
Thirteen consecutive patients with idiopathic spontaneous pneumothorax and
eight patients with malignant pleural effusions received talc pleurodesis.
The first group was treated with talc poudrage, whereas the second group wa
s treated with talc slurry, Pleural fluids were isolated before talc admini
stration as well as 3, 6, 24, 48 and 72 h afterwards.
The talc induced a rapid polymorphonuclear neutrophil (PMN) influx followed
by an accumulation of macrophages, In addition, increased production of in
terleukin (IL)-8 and monocyte chemotactic protein (MCP)-1 was observed, The
talc-induced PMN influx reached its maximum after 3-24 h, and was related
to the IL-8 concentration,In contrast, the MCP-1 was not related to the mac
rophage accumulation.
Talc-induced inflammation in patients with idiopathic spontaneous pneumotho
rax and malignant pleural effusion is characterized by an influx of polymor
phonuclear neutrophils related to interleukin-8, followed by an accumulatio
n of monocytes.