Department of Microbiology & Immunology, University of Michigan, Ann Arbor, Michigan, USA.
Division of Infectious Diseases, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA.
Clin Microbiol Rev. 2021 Dec 15;34(4):e0032320. doi: 10.1128/CMR.00323-20. Epub 2021 Jul 14.
Emerging studies have highlighted the disproportionate role of Candida albicans in influencing both early community assembly of the bacterial microbiome and dysbiosis during allergic diseases and intestinal inflammation. Nonpathogenic colonization of the human gastrointestinal (GI) tract by C. albicans is common, and the role of this single fungal species in modulating bacterial community reassembly after broad-spectrum antibiotics can be readily recapitulated in mouse studies. One of the most notable features of C. albicans-associated dysbiotic states is a marked change in the levels of lactic acid bacteria (LAB). C. albicans and LAB share metabolic niches throughout the GI tract, and studies have identified various interactions between these microbes. The two predominant LAB affected are species and species. Lactobacilli can antagonize enterococci and C. albicans, while Enterococcus faecalis and C. albicans have been reported to exhibit a mutualistic relationship. E. faecalis and C. albicans are also causative agents of a variety of life-threatening infections, are frequently isolated together from mixed-species infections, and share certain similarities in clinical presentation-most notably their emergence as opportunistic pathogens following disruption of the microbiota. In this review, we discuss and model the mechanisms used by species, E. faecalis, and C. albicans to modulate each other's growth and virulence in the GI tract. With multidrug-resistant E. faecalis and C. albicans strains becoming increasingly common in hospital settings, examining the interplay between these three microbes may provide novel insights for enhancing the efficacy of existing antimicrobial therapies.
新兴研究强调了白色念珠菌在影响细菌微生物组的早期群落组装和过敏疾病及肠道炎症期间的失调中的不成比例作用。白色念珠菌对人体胃肠道(GI)的非致病性定植很常见,并且这种单一真菌物种在调节广谱抗生素后细菌群落再组装中的作用可以在小鼠研究中轻易再现。白色念珠菌相关失调状态的最显著特征之一是乳酸菌(LAB)水平的明显变化。白色念珠菌和 LAB 在整个胃肠道中共享代谢生态位,研究已经确定了这些微生物之间的各种相互作用。受影响的两种主要 LAB 是 和 。乳杆菌可以拮抗肠球菌和白色念珠菌,而粪肠球菌和白色念珠菌已被报道存在共生关系。粪肠球菌和白色念珠菌也是各种危及生命的感染的病原体,经常从混合物种感染中一起分离出来,并且在临床表现方面具有某些相似性——尤其是它们在破坏微生物群后作为机会性病原体出现。在这篇综述中,我们讨论并模拟了 和 、粪肠球菌和白色念珠菌在胃肠道中相互调节彼此生长和毒力的机制。由于耐多药粪肠球菌和白色念珠菌菌株在医院环境中越来越常见,研究这三种微生物之间的相互作用可能为增强现有抗菌治疗的疗效提供新的见解。