Macrophage-mediated inflammation and disease: a focus on the lung.

Macrophage-mediated inflammation and disease: a focus on the lung.
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巨噬细胞介导的炎症和疾病:关注肺部。

DOI:
10.1155/2012/140937
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发表时间:
2012
影响因子:
4.6
通讯作者:
Hussell T
Hussell T
中科院分区:
医学3区
文献类型:
--
作者:
Gwyer Findlay E;Hussell T

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肺部暴露在大量吸入的抗原、颗粒物和污染物中。因此,存在于气道中的细胞必须维持在一种普遍的抑制表型,这样对非严重刺激物的过度反应就不会发生;这些导致肺部结构的旁观者损伤,免疫细胞涌入气道,并随之损害气体交换。为此,肺的常驻细胞,主要是巨噬细胞,保持在一个潮湿的状态。然而,有时抑制失败,这些巨噬细胞对抗原挑战反应过度,导致炎症介质释放,诱导肺上皮细胞死亡,细胞外基质沉积,发生免疫病理。在本文中,我们讨论了巨噬细胞介导的病理背后的机制,在一些炎性肺疾病的背景下。
The lung is exposed to a vast array of inhaled antigens, particulate matter, and pollution. Cells present in the airways must therefore be maintained in a generally suppressive phenotype so that excessive responses to nonserious irritants do not occur; these result in bystander damage to lung architecture, influx of immune cells to the airways, and consequent impairment of gas exchange. To this end, the resident cells of the lung, which are predominantly macrophages, are kept in a dampened state. However, on occasion the suppression fails and these macrophages overreact to antigenic challenge, resulting in release of inflammatory mediators, induction of death of lung epithelial cells, deposition of extracellular matrix, and development of immunopathology. In this paper, we discuss the mechanisms behind this macrophage-mediated pathology, in the context of a number of inflammatory pulmonary disorders.
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