Haemophilus influenzae and oxidative stress.

Haemophilus influenzae and oxidative stress.
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DOI:
10.3389/fcimb.2012.00040
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发表时间:
2012
影响因子:
5.7
通讯作者:
Munson RS Jr
Munson RS Jr
中科院分区:
医学2区
文献类型:
--
作者:
Harrison A;Bakaletz LO;Munson RS Jr

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流感嗜血杆菌是人类上呼吸道的共生菌。然而,流感嗜血杆菌可以脱离其共生生态位并引起多种呼吸道疾病。此类疾病包括幼儿中耳炎,以及慢性阻塞性肺病(COPD)、鼻窦炎、结膜炎和支气管炎的恶化。在定植和感染过程中,流感嗜血杆菌必须承受由内源性产生的多种活性氧、其他共病原体和宿主细胞产生的氧化应激。因此,流感嗜血杆菌进化出了多种机制来保护细胞免受氧气产生的应激。在这篇综述中,我们将相对于大肠杆菌中已充分描述的系统来描述这些系统。此外,我们将比较流感嗜血杆菌如何对抗氧化应激的影响,作为其作为成功的共生体和病原体的必要表型。
Haemophilus influenzae is a commensal of the human upper respiratory tract. H. influenzae can, however, move out of its commensal niche and cause multiple respiratory tract diseases. Such diseases include otitis media in young children, as well as exacerbations of chronic obstructive pulmonary disease (COPD), sinusitis, conjunctivitis, and bronchitis. During the course of colonization and infection, H. influenzae must withstand oxidative stress generated by multiple reactive oxygen species produced endogenously, by other co-pathogens and by host cells. H. influenzae has, therefore, evolved multiple mechanisms that protect the cell against oxygen-generated stresses. In this review, we will describe these systems relative to the well-described systems in Escherichia coli. Moreover, we will compare how H. influenzae combats the effect of oxidative stress as a necessary phenotype for its roles as both a successful commensal and pathogen.
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