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通过支气管肺泡灌洗（ｂｒｏｎｃｈｏａｌｖｅｏｌａｒｌａｖａｇｅ，ＢＡＬ）从１３例慢性支气管炎缓解期病人和１１例正常人获得的肺泡巨噬细胞（ａｌｖｅｏｌａｒｍａｃｒｏｐｈａｇｅｓ，ＡＭ）加入地塞米松４ｍｇ／Ｌ及脂多糖（ｌｉｐｏｐｏｌｙｓａｃｃｈａｒｉｄｅ，ＬＰＳ）１ｍｇ／Ｌ体外培养２４小时。结果显示两组ＡＭ合成分泌的ＴＮＦα、ＴＸＢ２和６－ｋｅｔｏ－ＰＧＦ１α呈下降趋势，两组间ＡＭ合成分泌的这些活性分子均呈显著差异性（Ｐ＜０．０５）。表明地塞米松抑制ＡＭ的活化，可能慢支病人呼吸道内ＡＭ功能相对亢进。
Dexamethasone 4 mg / L and lipopolysaccharide (LPS) were added to alveolar macrophages (AM) obtained from 13 patients with chronic bronchitis and 11 normal subjects by bronchoalveolar lavage (BAL) 1mg / L cultured in vitro 24 hours. The results showed that the levels of TNFα, TXB2 and 6-keto-PGF1α secreted by AM in both groups showed a decreasing trend. There was significant difference between the two groups in the activity of AM synthesis and secretion (P <0.05). Dexamethasone inhibition of AM activation may be relatively slow in patients with respiratory tract AM function of hyperthyroidism.