- Revolutionizing gut health: exploring the role of gut microbiota and the potential of microbiome-based therapies in lower gastrointestinal diseases
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Yong Eun Park, Jae Hyun Kim
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Kosin Med J. 2023;38(2):98-106. Published online June 23, 2023
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DOI: https://doi.org/10.7180/kmj.23.115
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 Abstract
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- The gut microbiota comprises a collection of microorganisms residing in the human digestive system, including bacteria, viruses, and fungi. These microbes have critical roles in food breakdown, immune system regulation, and the production of essential nutrients. Several lower gastrointestinal (GI) diseases, including inflammatory bowel disease, irritable bowel syndrome, and colorectal cancer, have been associated with dysbiosis, which refers to an imbalance in the gut microbiota. Additionally, the gut microbiome and its microbial compounds affect disease development and the host’s immune response. Alterations in the gut-brain axis microbiome are also implicated in lower GI diseases. Therefore, microbiome-based therapies that regulate the gut microbiota (e.g., fecal microbiota transplantation and probiotics) are essential for the prevention and treatment of these diseases. This review aims to highlight the significance of gut microbiota and microbiome-based therapies in managing lower GI diseases.
- The effects of rebamipide, sucralfate, and rifaximin against inflammation and apoptosis in radiation-induced murine intestinal injury
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Won Moon, Sangwook Lim, Yeonsoon Jung, Yuk Moon Heo, Seun Ja Park, Moo In Park, Sung Eun Kim, Jae Hyun Kim, Kyoungwon Jung
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Kosin Med J. 2022;37(4):320-341. Published online December 26, 2022
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DOI: https://doi.org/10.7180/kmj.22.140
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Abstract
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- Background
Radiotherapy improves overall survival in patients with abdominopelvic malignancies. However, the toxic effects of radiation restrict the maximum dose that can be given, and there are no well-established preventive or therapeutic strategies. This study was conducted to evaluate whether rebamipide, sucralfate, and rifaximin have a suppressive effect on acute ionizing radiation (IR)-induced inflammation in the intestines of mice.
Methods
Thirty-six ICR mice were divided into a vehicle-treated group with sham irradiation; a vehicle-treated group with irradiation; rebamipide, sucralfate, or rifaximin-treated groups with irradiation; and a rebamipide-treated group with sham irradiation. The expression of proinflammatory, anti-inflammatory, proapoptotic, and antiapoptotic factors was investigated.
Results
The downregulated expression of nicotinamide phosphoribosyltransferase by IR was attenuated by all drugs (p<0.05). All drugs suppressed the IR-induced activation of NF-κB and phosphorylation of MAPKs (p<0.05) and attenuated the production of TNF-α, IL-1β, and IL-6 in response to IR (p<0.05). The administration of all drugs markedly attenuated IR-induced increases in iNOS, COX-2, and PGE2 (p<0.05), as well as [Ca2+] oscillations that were increased by IR. The expression of proapoptotic genes and antiapoptotic genes was suppressed and induced, respectively, by all drugs. IR treatment increased the release of cytochrome C, which was attenuated by all drugs (p<0.05). All drug treatments resulted in a significant decrease in the expression of caspase-3 and caspase-7 (p<0.05), which were both upregulated following IR treatment.
Conclusions
The administration of rebamipide, sucralfate, or rifaximin prior to radiation therapy may prevent or attenuate acute radiation-induced enterocolitis.
- Differences in Endoscopic Findings of Primary and Secondary Gastric Lymphoma
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Kyoungwon Jung, Hae Soo Jeon, Moo In Park, Il Hyeong Choe, Hyun Seung Je, Jae Hyun Kim, Sung Eun Kim, Won Moon, Seun Ja Park
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Kosin Med J. 2020;35(2):114-124. Published online December 31, 2020
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DOI: https://doi.org/10.7180/kmj.2020.35.2.114
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Abstract
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Objectives
: Since endoscopic findings of primary gastric lymphoma are ambiguous and diverse, it is not easy to distinguish them from gastric adenocarcinoma or secondary gastric lymphoma. The aim of this study was to investigate the difference in clinical and endoscopic features between primary gastric lymphoma and gastric involvement of lymphoma.
Methods
: Forty-eight patients were enrolled in this retrospective study between June 2008 and February 2017. The patients were divided into primary gastric lymphoma group (primary group, n = 18) and gastric involvement group (secondary group, n = 30) based on whether or not they carried gastric lesions alone. Patients’ clinical characteristics, endoscopic findings and pathologic data were retrospectively reviewed based on electronic medical records.
Results
: The mean age of patients was 63.3 ± 13.1 years and 29 patients were female (60.4%). Diffuse large B-cell lymphoma pathology (81.3%), gastric body involvement (47.9%) and ulceroinfiltrative morphology on endoscopy (43.8%) were common features. Regardless of the two groups, the initial endoscopic diagnosis was considered as lymphoma only in 41.7%. Compared with the primary group, fundus (P = 0.035) and regional lymph node (P < 0.001) were significantly associated with the secondary group. However, there was no significant difference in endoscopic findings including location, size, number, and morphology of lesion.
Conclusions
: Endoscopic diagnosis of gastric lymphoma is a challenge. There is no difference in endoscopic findings between the primary and secondary groups even when confirmed separately. However, when the lesion is present in the fundus, we keep in mind the possibility of secondary gastric lymphoma.
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Citations
Citations to this article as recorded by  - Endoscopic and Histopathological Characteristics of Gastrointestinal Lymphoma: A Multicentric Study
Quang Trung Tran, Thinh Nguyen Duy, Bao Song Nguyen-Tran, Tung Nguyen-Thanh, Quy Tran Ngo, Nam Phuong Tran Thi, Vi Le, Thuan Dang-Cong
Diagnostics.2023; 13(17): 2767. CrossRef - A Differential Diagnosis of Unusual Gastric Ulcer
Soo-Yoon Sung, Hyun Ho Choi, Kyung Jin Seo
Diagnostics.2022; 12(8): 1929. CrossRef
- A case of Thyroid Abscess by Streptococcus intermedius
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Jae Hyun Kim, Young Sik Choi, Yo Han Park, Jung Hun Kim
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Kosin Med J. 2007;22(1):279-282. Published online June 30, 2007
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