人类胚胎肺不同时期SP-A和SP-D的表达及其意义
发布时间:2018-11-04 18:23
【摘要】:肺表面活性物质相关蛋白A(pulmonary surfactant associated protein A, SP-A)和表面活性物质相关蛋白D(pulmonary surfactant associated protein D, SP-D)主要分布于支气管表面和肺泡气液界面上,主要由肺泡Ⅱ型细胞(alveolar epithelia cell Ⅱ, ACE Ⅱ)所分泌,属胶凝素家族的重要成员。现已证实,SP-A、SP-D是肺部重要的天然免疫防御分子,不仅能清除病原体,还参与免疫、炎症及过敏反应的调节,作为判断胎肺发育成熟度以及诊断某些肺部疾病的临床指标。 本研究旨在观察人类胚胎肺组织发育的一般规律,分析不同时间点胚肺SP-A、SP-D蛋白合成和分泌的情况,初步探讨胎肺成熟度与SP-A、SP-D生成的关系。并根据胚肺发育中这些免疫防御调节性因子(SP-A、SP-D)表达的情况,阐明早产儿或新生儿肺部感染及其局部免疫防御的生理病理学基础,为SP-A和SP-D替代疗法提供理论依据。 材料和方法 收集水囊引产的妊娠10周-36周正常胎儿44例及正常新生儿5例和正常成人2例,取其肺组织固定、包埋制成石蜡切片,HE染色观察肺组织各个发育阶段的成熟度,免疫组化检测SP-A、SP-D分子时相性表达特征。
[Abstract]:Pulmonary surfactant associated protein (A (pulmonary surfactant associated protein A, SP-A) and surfactant associated protein (D (pulmonary surfactant associated protein D, SP-D) were mainly distributed on the surface of bronchi and alveolar interface. It is mainly secreted by (alveolar epithelia cell 鈪,
本文编号:2310761
[Abstract]:Pulmonary surfactant associated protein (A (pulmonary surfactant associated protein A, SP-A) and surfactant associated protein (D (pulmonary surfactant associated protein D, SP-D) were mainly distributed on the surface of bronchi and alveolar interface. It is mainly secreted by (alveolar epithelia cell 鈪,
本文编号:2310761
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