[Interleukin-1 beta production by alveolar macrophages in cases of asbestos exposure].
1993
: In order to investigate the role of interleukin-1 beta secreted by alveolar macrophages in the pathogenesis of pulmonary asbestosis, we performed bronchoalveolar lavage on 12 asbestos-exposed subjects and 10 control subjects, and measured interleukin-1 beta secreted by alveolar macrophages. Interleukin-1 beta production was increased in the asbestos-exposed subjects compared to control subjects (3.1 +/- 2.2 ng/ml versus 0.8 +/- 0.4 ng/ml, p < 0.05). The period after retirement was inversely correlated with interleukin-1 beta production (r = -0.67, p < 0.05). We divided non-smoking asbestos-exposed subjects into two subgroups based on the radiographical profusion according to the ILO classification. The advanced group was defined as grade 2 or greater profusion, and the early group was defined as grade 1 or lower profusion. We found higher production of IL-1 beta in the early group than in the advanced group.
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