The microbiome in inflammatory bowel disease: from prevailing clinical evidence to future possibilities
2018
Microbial dysbiosis characterized by alterations in the structure and function of the gut microbiome has long been implicated in the pathogenesis of inflammatory bowel disease (IBD). To date, most human IBD microbiome studies are focused on microbial composition rather than function, however, with the latest technical advancements complemented by the rapidly dropping costs, studies focusing on the functional aspects of microbial dysbiosis are on the rise. Several compelling and complimentary pieces of evidence support the notion that the gut microbiome and their metabolites play an important role in the development of IBD. Data from preclinical studies overwhelmingly support the notion that changes in the gut microbiome causally underlie IBD pathogenesis. Hence, there is considerable interest in modulating the state and function of the gut microbiome to achieve therapeutic benefits. While the causal potential of the gut microbiome remains an active area of current research in the clinical setting, accumulating correlative evidence support the view that microbial dysbiosis parallels increased incidence of IBD. In this review, we intend to provide a brief overview of the current human IBD microbiome findings, describe the cause-effect relationships between the gut microbiome and IBD, and discuss the possibility of using microbiome-based approaches in the diagnosis, therapy, and management of disease. In addition, the potential role of microbiome-based interventions in the treatment of human IBD is also discussed.
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