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本文用皮毛作业现场粉尘(游离SiO_2含量分别为0.6%、0.7%和17.6%)经大白鼠气管内染尘,于染尘后1、3、6、12个月作肺组织病理学检查及全肺胶原含量测定。实验动物早期主要改变为间质肺炎样改变和呼吸遗炎症。实验晚期时,游离SiO_2含量低于1%的皮毛粉尘只表现为肺间质纤维增生,而游离SiO_2含量为17.6%的皮毛粉尘同时在肺内有典型的纤维结节形成,肺组织超微结构有相应改变。证明皮毛粉尘具有一定致纤维化作用,致纤维化作用的强弱与粉尘中游离SiO_2含量有关,提示应引起对皮毛作业工人尘肺的重视。
In this paper, dust on the operation site of fur (free SiO 2 content were 0.6%, 0.7% and 17.6% respectively) were stained by trachea in rats and were examined by lung histopathology at 1,3,6,12 months Lung collagen content determination. Early experimental animals mainly changed to interstitial pneumonia-like changes and respiratory inflammation. In the late stage of experiment, the fur dust with less than 1% SiO 2 content showed pulmonary interstitial fibrosis, while the fur dust with free SiO 2 content of 17.6% had typical fibrous nodules in lung and ultrastructure of lung tissue There is a corresponding change. Proof fur has a certain role in fibrosis, resulting in the role of fibrosis and the strength of the free SiO 2 content in the dust, suggesting that workers should be caused by fur dust the importance of workers.