inhibition of the synthesis of interleukin-1h or blocking the
bioactivity of this cytokine is expected to have a broad
spectrum of anti-inflammatory effects in the lung and to
have an impact on the remodeling processes associated with
long-term chronic lung injury. None of the currently used
animal models replicates all of the pathological effects of
chronic obstructive pulmonary disease; however, cigarette
smoke exposure in a variety of experimental animals
induces at least some changes in the lung that are similar
in humans and animals species (Rylander, 1972; Cavarra et
al., 2001; Churg et al., 2003). Our results showing that
neutralizing interleukin-1h resulted in reduced macrophage
infiltration in response to exposure of mice to cigarette
smoke are in line with this hypothesis and suggest that
strategies to inhibit interleukin-1h may have therapeutic
benefit in chronic pulmonary diseases.
Acknowledgments
We are in debt with Dr. Ronir R. Luiz and Dr. F.
Rumjanek’s research group for their helpful assistance. This
work was supported by Brazilian agencies: CNPq, CAPES,
FUJB and FAPERJ.
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