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RISS 인기검색어
- 검색키워드
- 저자 : ( Hiroko Nagao Kitamoto ) (검색결과 2 건)
- 무료
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Pathogenic role of the gut microbiota in gastrointestinal diseases
( Hiroko Nagao Kitamoto ),( Sho Kitamoto ),( Peter Kuffa ),( Nobuhiko Kamada ) 대한장연구학회 2016 Intestinal Research Vol.14 No.2
The gastrointestinal (GI) tract is colonized by a dense community of commensal microorganisms referred to as the gut microbiota. The gut microbiota and the host have co-evolved, and they engage in a myriad of immunogenic and metabolic interactions. The gut microbiota contributes to the maintenance of host health. However, when healthy microbial structure is perturbed, a condition termed dysbiosis, the altered gut microbiota can trigger the development of various GI diseases including inflammatory bowel disease, colon cancer, celiac disease, and irritable bowel syndrome. There is a growing body of evidence suggesting that multiple intrinsic and extrinsic factors, such as genetic variations, diet, stress, and medication, can dramatically affect the balance of the gut microbiota. Therefore, these factors regulate the development and progression of GI diseases by inducing dysbiosis. Herein, we will review the recent advances in the field, focusing on the mechanisms through which intrinsic and extrinsic factors induce dysbiosis and the role a dysbiotic microbiota plays in the pathogenesis of GI diseases. (Intest Res 2016;14:127-138)
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Host-microbial Cross-talk in Inflammatory Bowel Disease
Hiroko Nagao-Kitamoto,Nobuhiko Kamada 대한면역학회 2017 Immune Network Vol.17 No.1
A vast community of commensal microorganisms, commonly referred to as the gut microbiota, colonizes the gastrointestinal tract (GI). The involvement of the gut microbiota in the maintenance of the gut ecosystem is two-fold: it educates host immune cells and protects the host from pathogens. However, when healthy microbial composition and function are disrupted (dysbiosis), the dysbiotic gut microbiota can trigger the initiation and development of various GI diseases, including inflammatory bowel disease (IBD). IBD, primarily includes ulcerative colitis (UC) and Crohn's disease (CD), is a major global public health problem affecting over 1 million patients in the United States alone. Accumulating evidence suggests that various environmental and genetic factors contribute to the pathogenesis of IBD. In particular, the gut microbiota is a key factor associated with the triggering and presentation of disease. Gut dysbiosis in patients with IBD is defined as a reduction of beneficial commensal bacteria and an enrichment of potentially harmful commensal bacteria (pathobionts). However, as of now it is largely unknown whether gut dysbiosis is a cause or a consequence of IBD. Recent technological advances have made it possible to address this question and investigate the functional impact of dysbiotic microbiota on IBD. In this review, we will discuss the recent advances in the field, focusing on host-microbial cross-talk in IBD.
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