中性粒细胞、细胞凋亡与吞噬清除:调节巨噬细胞内寄生虫感染的细胞反应固有序列

Neutrophils, apoptosis and phagocytic clearance: an innate sequence of cellular responses regulating intramacrophagic parasite infections.

作者信息

Ribeiro-Gomes F L, Silva M T, Dosreis G A

机构信息

Instituto de Biofísica Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, 21949-900, Brazil.

出版信息

Parasitology. 2006;132 Suppl:S61-8. doi: 10.1017/S0031182006000862.

Abstract

In complex organisms, apoptosis is a constitutive cell death process that is involved in physiological regulation of cell numbers and that can also be induced in the course of inflammatory and immune responses. Neutrophils are among the first cells recruited during inflammation. Neutrophils constitutively die by apoptosis at inflamed sites, and are ingested by macrophages. Recent studies investigated how phagocytic clearance of senescent neutrophils influences the survival of intracellular protozoan parasites that have been phagocytosed by, or have invaded phagocytes. The results indicate that neutrophil clearance plays an unexpected role in regulation of intramacrophagic protozoan parasite infection.

摘要

在复杂生物体中,细胞凋亡是一种组成性细胞死亡过程,它参与细胞数量的生理调节,并且也可在炎症和免疫反应过程中被诱导。中性粒细胞是炎症过程中最早被招募的细胞之一。中性粒细胞在炎症部位会通过凋亡而自然死亡,并被巨噬细胞吞噬。最近的研究调查了衰老中性粒细胞的吞噬清除如何影响已被吞噬细胞吞噬或入侵吞噬细胞的细胞内原生动物寄生虫的存活。结果表明,中性粒细胞清除在巨噬细胞内原生动物寄生虫感染的调节中发挥了意想不到的作用。

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