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Klebsiella: a long way to go towards understanding this enigmatic jet-setter

机译:克雷比埃拉(Klebsiella):了解这个神秘的喷气式歼击机还有很长的路要走

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摘要

Klebsiella pneumoniae is the causative agent of a variety of diseases, including pneumonia, urinary tract infections, septicemia, and the recently recognized pyogenic liver abscesses (PLA). Renewed efforts to identify and understand the bacterial determinants required to cause disease have come about because of the worldwide increase in the isolation of strains resistant to a broad spectrum of antibiotics. The recent increased isolation of carbapenem-resistant strains further reduces the available treatment options. The rapid geographic spread of the resistant isolates and the spread to other pathogens are of particular concern. For many years, the best characterized virulence determinants were capsule, lipopolysaccharide, siderophores, and types 1 and 3 fimbriae. Recent efforts to expand this list include in vivo screens and whole-genome sequencing. However, we still know little about how this bacterium is able to cause disease. Some recent clonal analyses of K. pneumoniae strains indicate that there are distinct clonal groups, some of which may be associated with specific disease syndromes. However, what makes one clonal group more virulent and what changes the disease pattern are not yet clear and remain important questions for the future.
机译:肺炎克雷伯菌是多种疾病的病原,包括肺炎,泌尿道感染,败血病和最近发现的化脓性肝脓肿(PLA)。由于全世界范围内对多种抗生素具有耐药性的菌株的分离日益增多,因此人们为确定和理解引起疾病所需的细菌决定因素做出了新的努力。最近增加的对碳青霉烯抗性菌株的分离进一步减少了可用的治疗选择。抗性分离株在地理上的迅速传播以及向其他病原体的传播尤其令人关注。多年来,表征最强的毒力决定因素是胶囊,脂多糖,铁载体以及1型和3型菌毛。最近扩大该列表的努力包括体内筛选和全基因组测序。但是,对于这种细菌如何引起疾病,我们仍然知之甚少。最近对肺炎克雷伯氏菌菌株进行的一些克隆分析表明,存在不同的克隆群,其中有些可能与特定的疾病综合征有关。但是,究竟是什么使一个克隆群体更具毒性,以及疾病模式发生了哪些变化,目前尚不清楚,并且仍然是未来的重要问题。

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