Role of alveolar collapse in idiopathic pleuroparenchymal fibroelastosis.

Role of alveolar collapse in idiopathic pleuroparenchymal fibroelastosis.
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DOI:
10.36141/svdld.v37i2.9981
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发表时间:
2020
期刊:
Sarcoidosis, vasculitis, and diffuse lung diseases : official journal of WASOG
影响因子:
--
通讯作者:
Watanabe K
Watanabe K
中科院分区:
其他
文献类型:
--
作者:
Kinoshita Y;Ishii H;Kushima H;Fujita M;Nabeshima K;Watanabe K

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特发性胸膜实质纤维弹力纤维增生症(IPPFE)的组织学成分为弹力纤维带状聚集体(带状弹力纤维增生症)和肺泡腔内胶原增生症合并间隔弹力纤维增生症。带状弹力增殖症被认为是由肺泡塌陷引起的,但这一机制并不完全合理。我们用免疫组织化学方法对10例IPPFE患者的带状弹力纤维增殖症中的上皮细胞进行鉴定。通过检测弹力纤维增厚与弹力纤维增生症总厚度的关系,评估弹力增厚对IPPFE发生和发展的影响。在10例患者中,9例发现多个细胞角蛋白阳性细胞排列在带状弹力纤维内缝隙的内表面。当纤维弹力纤维增厚<1 mm时,带状弹力纤维占优势,而当≥为1 mm时,带状弹力纤维增厚较少。带状弹力纤维增殖症被证实是肺泡塌陷的结果,这可能是IPPFE的初始病变。(结节病血管痉挛弥漫性肺病2020;37(2):212-217)
Zonal aggregates of elastic fibres (zonal elastosis) and intraalveolar collagenosis with septal elastosis are histologic components of subpleural fibroelastosis of idiopathic pleuroparenchymal fibroelastosis (IPPFE). Zonal elastosis is considered to result from alveolar collapse, but this mechanism has not been fully justified. We immunohistochemically attempted to identify epithelial cells in zonal elastosis of 10 patients with IPPFE. The thickness of the zonal elastosis in relation to the total thickness of the fibroelastosis was examined to estimate the influence of zonal elastosis on the occurrence and development of IPPFE. In 9 of the 10 patients, multi-cytokeratin-positive cells were found lining the inner surface of slit-like spaces embedded in the zonal elastosis. Zonal elastosis was predominant when fibroelastosis was < 1 mm thick but less predominant when it was ≥1 mm. The zonal elastosis was proven to result from alveolar collapse, which might be an initial lesion in IPPFE. (Sarcoidosis Vasc Diffuse Lung Dis 2020; 37 (2): 212-217)
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