IL6 and pulmonary fibrosis: In vivo studies have shown that BLM-induced pulmonary fibrosis and inflammation significantly increased the deposition of extracellular matrix and the levels of interleukin-1 beta (IL-1β), monocyte chemoattractant protein-1 (MCP-1), and interleukin 6 (IL-6), all of which were markedly reduced by quercetin administration.