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논문 기본 정보

자료유형
학술저널
저자정보
Kim Sang Hoon (Division of Gastroenterology, Department of Internal Medicine, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong, Korea) Choi Yura (Department of Rehabilitation Medicine of Korean Medicine, Dongguk University, Goyang, Korea) Oh Jihong (Department of Rehabilitation Medicine of Korean Medicine, Dongguk University, Goyang, Korea) Lim Eui Yeon (Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea) Lee Jung Eun (Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, KoreaResearch Institute of Human Ecology, Seoul National University, Seoul, Korea) Song Eun-Ji (Research Group of Personalized Diet, Korea Food Research Institute, Wanju, Korea) Nam Young-Do (Research Group of Personalized Diet, Korea Food Research Institute, Wanju, Korea) Kim Hojun (Department of Rehabilitation Medicine of Korean Medicine, Dongguk University, Goyang, Korea)
저널정보
거트앤리버 발행위원회 Gut and Liver Gut and Liver Vol.18 No.4
발행연도
2024.7
수록면
621 - 631 (11page)
DOI
10.5009/gnl230130

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Background/Aims: Functional dyspepsia (FD) has long been regarded as a syndrome because its pathophysiology is multifactorial. However, recent reports have provided evidence that changes in the duodenal ecosystem may be the key. This study aimed to identify several gastrointestinal factors and biomarkers associated with FD, specifically changes in the duodenal ecosystem that may be key to understanding its pathophysiology. Methods: In this case-control study, 28 participants (12 with FD and 16 healthy control individuals) were assessed for dietary nutrients, gastrointestinal symptom severity, immunological status of the duodenal mucosa, and microbiome composition from oral, duodenal, and fecal samples. Integrated data were analyzed using immunohistochemistry, real-time polymerase chain reaction, 16S rRNA sequencing, and network analysis. Results: Duodenal mucosal inflammation and impaired expression of tight junction proteins were confirmed in patients with FD. The relative abundance of duodenal Streptococcus (p=0.014) and reductions in stool Butyricicoccus (p=0.047) were confirmed. These changes in the gut microbiota were both correlated with symptom severity. Changes in dietary micronutrients, such as higher intake of valine, were associated with improved intestinal barrier function and microbiota. Conclusions: This study emphasizes the relationships among dietary nutrition, oral and gut microbiota, symptoms of FD, impaired function of the duodenal barrier, and inflammation. Assessing low-grade inflammation or increased permeability in the duodenal mucosa, along with changes in the abundance of stool Butyricicoccus, is anticipated to serve as effective biomarkers for enhancing the objectivity of FD diagnosis and monitoring.

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