Intestinal Research

Original Articles

Infection

Comparative outcomes of acute colonic diverticulitis in immunocompromised versus immunocompetent patients: a systematic review and meta-analysis: Jae Gon Lee, Yong Eun Park, Ji Young Chang, Hyun Joo Song, Duk Hwan Kim, Young Joo Yang, Byung Chang Kim, Shin Hee Lee, Myung-Won You, Seong-Eun Kim; Intest Res 2023;21(4):481-492. Published online May 31, 2023; DOI: https://doi.org/10.5217/ir.2023.00005

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Background/Aims
Immunocompromised patients with acute colonic diverticulitis are at high risk for complications and failure of non-surgical treatment. However, evidence on the comparative outcomes of immunocompromised and immunocompetent patients with diverticulitis is lacking. This systematic review and meta-analysis investigated the outcomes of medical treatment in immunocompromised and immunocompetent patients with diverticulitis.
Methods
A comprehensive literature search was conducted in PubMed, Embase, and the Cochrane Library. Studies comparing the clinical outcomes of immunocompromised and immunocompetent patients with diverticulitis were included.
Results
A total of 10 studies with 1,946,461 subjects were included in the quantitative synthesis. The risk of emergency surgery and postoperative mortality after emergency surgery was significantly higher in immunocompromised patients than in immunocompetent patients with diverticulitis (risk ratio [RR], 1.76; 95% confidence interval [CI], 1.31–2.38 and RR, 3.05; 95% CI, 1.70–5.45, respectively). Overall risk of complications associated with diverticulitis was non-significantly higher in immunocompromised than in immunocompetent patients (RR, 1.24; 95% CI, 0.95–1.63). Overall mortality irrespective of surgery was significantly higher in immunocompromised than in immunocompetent patients with diverticulitis (RR, 3.65; 95% CI, 1.73–7.69). By contrast, postoperative mortality after elective surgery was not significantly different between immunocompromised and immunocompetent patients with diverticulitis. In subgroup analysis, the risk of emergency surgery and recurrence was significantly higher in immunocompromised patients with complicated diverticulitis, whereas no significant difference was shown in mild disease.
Conclusions
Immunocompromised patients with diverticulitis should be given the best medical treatment with multidisciplinary approach because they had increased risks of surgery, postoperative morbidity, and mortality than immunocompetent patients.

Citations

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Comparison of Outcomes Following Surgery for Diverticulitis Among Immunocompetent and Immunosuppressed Patients
Usama Waqar, Christina Gozza, Courtney L. Devin, Terrah J. Paul Olson, Seth A. Rosen
The American Surgeon™.2025;[Epub] CrossRef
Does type II diabetes mellitus increase the morbidity of patients with diverticulitis?
Marei H. Alshandeer, Walid M. Abd El Maksoud, Khaled S. Abbas, Fahad S. Al Amri, Maha A. Alghamdi, Hassan A. Alzahrani, Abdullah Dalboh, Mohammed A. Bawahab, Aisha J. Asiri, Yahia Assiri
Medicine.2024; 103(46): e40567. CrossRef
Not all acute colonic diverticulitis follows the same course: a potential risk for immunocompromised individuals
Yehyun Park
Intestinal Research.2023; 21(4): 415. CrossRef

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Microbiota

Compositional changes in fecal microbiota associated with clinical phenotypes and prognosis in Korean patients with inflammatory bowel disease: Seung Yong Shin, Young Kim, Won-Seok Kim, Jung Min Moon, Kang-Moon Lee, Sung-Ae Jung, Hyesook Park, Eun Young Huh, Byung Chang Kim, Soo Chan Lee, Chang Hwan Choi, on behalf of the IBD Research Group of the Korean Association for the Study of Intestinal Diseases; Intest Res 2023;21(1):148-160. Published online June 14, 2022; DOI: https://doi.org/10.5217/ir.2021.00168

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Background/Aims
The fecal microbiota of Korean patients with inflammatory bowel disease (IBD) was investigated with respect to disease phenotypes and taxonomic biomarkers for diagnosis and prognosis of IBD.
Methods
Fecal samples from 70 ulcerative colitis (UC) patients, 39 Crohn’s disease (CD) patients, and 100 healthy control individuals (HC) were collected. The fecal samples were amplified via polymerase chain reaction and sequenced using Illumina MiSeq. The relationships between fecal bacteria and clinical phenotypes were analyzed using the EzBioCloud database and 16S microbiome pipeline.
Results
The alpha-diversity of fecal bacteria was significantly lower in UC and CD (P<0.05) compared to that in HC. Bacterial community compositions in UC and CD were significantly different from that of HC according to Bray-Curtis dissimilarities, and there was also a difference between community composition in UC and CD (P=0.01). In UC, alpha-diversity was further decreased when the disease was more severe and the extent of disease was greater, and community composition significantly differed depending on the extent of the disease. We identified 9 biomarkers of severity and 6 biomarkers of the extent of UC. We also identified 5 biomarkers of active disease and 3 biomarkers of ileocolonic involvement in CD. Lachnospiraceae and Ruminococcus gnavus were biomarkers for better prognosis in CD.
Conclusions
The fecal microbiota profiles of IBD patients were different from those of HC, and several bacterial taxa may be used as biomarkers to determine disease phenotypes and prognosis. These data may also help discover new therapeutic targets for IBD.

Citations

Citations to this article as recorded by

Gut microbiota dysbiosis in a novel mouse model of colitis potentially increases the risk of colorectal cancer
Abrory A. C. Pramana, Guanying Bianca Xu, Siyuan Liang, Erick Omar Garcia Vazquez, Jacob M. Allen, Brett R. Loman, Wenyan Mei, Yuan-Xiang Pan, Hong Chen
American Journal of Physiology-Gastrointestinal and Liver Physiology.2025; 328(6): G831. CrossRef
Gut bacteriome in inflammatory bowel disease: An update on recent advances
Aditya Bajaj, Manasvini Markandey, Saurabh Kedia, Vineet Ahuja
Indian Journal of Gastroenterology.2024; 43(1): 103. CrossRef
An Update on the Role and Potential Molecules in Relation to Ruminococcus gnavus in Inflammatory Bowel Disease, Obesity and Diabetes Mellitus
Jinni Hong, Tingting Fu, Weizhen Liu, Yu Du, Junmin Bu, Guojian Wei, Miao Yu, Yanshan Lin, Cunyun Min, Datao Lin
Diabetes, Metabolic Syndrome and Obesity.2024; Volume 17: 1235. CrossRef
Research advancements and perspectives of inflammatory bowel disease: A comprehensive review
Junyi Bai, Ying Wang, Fuhao Li, Yueyao Wu, Jun Chen, Meng Li, Xi Wang, Bin Lv
Science Progress.2024;[Epub] CrossRef
Integrated Analysis of Microbiome and Metabolome Reveals Disease-Specific Profiles in Inflammatory Bowel Diseases and Intestinal Behçet’s Disease
Yehyun Park, Jae Bum Ahn, Da Hye Kim, I Seul Park, Mijeong Son, Ji Hyung Kim, Hyun Woo Ma, Seung Won Kim, Jae Hee Cheon
International Journal of Molecular Sciences.2024; 25(12): 6697. CrossRef
Dynamic changes in the gut microbiota composition during adalimumab therapy in patients with ulcerative colitis: implications for treatment response prediction and therapeutic targets
Han Na Oh, Seung Yong Shin, Jong-Hwa Kim, Jihye Baek, Hyo Jong Kim, Kang-Moon Lee, Soo Jung Park, Seok-Young Kim, Hyung-Kyoon Choi, Wonyong Kim, Woo Jun Sul, Chang Hwan Choi
Gut Pathogens.2024;[Epub] CrossRef
Potential of Gut Microbe-Derived Extracellular Vesicles to Differentiate Inflammatory Bowel Disease Patients from Healthy Controls
Min Heo, Young Soo Park, Hyuk Yoon, Nam-Eun Kim, Kangjin Kim, Cheol Min Shin, Nayoung Kim, Dong Ho Lee
Gut and Liver.2023; 17(1): 108. CrossRef
Ruminococcus gnavus: friend or foe for human health
Emmanuelle H Crost, Erika Coletto, Andrew Bell, Nathalie Juge
FEMS Microbiology Reviews.2023;[Epub] CrossRef
The Relationship Between Rosacea and Inflammatory Bowel Disease: A Systematic Review and Meta-analysis
Yu Kyung Jun, Da-Ae Yu, Yoo Min Han, Soo Ran Lee, Seong-Joon Koh, Hyunsun Park
Dermatology and Therapy.2023; 13(7): 1465. CrossRef
Risk of all-cause and cause-specific mortality associated with immune-mediated inflammatory diseases in Korea
Oh Chan Kwon, See Young Lee, Jaeyoung Chun, Kyungdo Han, Yuna Kim, Ryul Kim, Min-Chan Park, Jie-Hyun Kim, Young Hoon Youn, Hyojin Park
Frontiers in Medicine.2023;[Epub] CrossRef
Comments on Efficacy of a Synbiotic Containing Lactobacillus paracasei DKGF1 and Opuntia humifusa in Elderly Patients with Irritable Bowel Syndrome: A Randomized, Double-Blind, Placebo-Controlled Trial
Kwang Woo Kim
Gut and Liver.2023; 17(6): 954. CrossRef
Evaluation of Bacterial and Fungal Biomarkers for Differentiation and Prognosis of Patients with Inflammatory Bowel Disease
Hyuk Yoon, Sunghyouk Park, Yu Kyung Jun, Yonghoon Choi, Cheol Min Shin, Young Soo Park, Nayoung Kim, Dong Ho Lee
Microorganisms.2023; 11(12): 2882. CrossRef
A Machine Learning-Based Diagnostic Model for Crohn’s Disease and Ulcerative Colitis Utilizing Fecal Microbiome Analysis
Hyeonwoo Kim, Ji Eun Na, Sangsoo Kim, Tae-Oh Kim, Soo-Kyung Park, Chil-Woo Lee, Kyeong Ok Kim, Geom-Seog Seo, Min Suk Kim, Jae Myung Cha, Ja Seol Koo, Dong-Il Park
Microorganisms.2023; 12(1): 36. CrossRef

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Letters to the Editor

IBD

Update on SARS-CoV-2 vaccination of patients with inflammatory bowel disease: what clinicians need to know: Yoo Jin Lee, Seong-Eun Kim, Yong Eun Park, Ji Young Chang, Hyun Joo Song, Duk Hwan Kim, Young Joo Yang, Byung Chang Kim, Jae Gon Lee, Hee Chan Yang, Seung-Jae Myung, Clinical Practice Guideline Committee of the Korean Association for the Study of Intestinal Diseases; Intest Res 2022;20(3):386-388. Published online March 11, 2022; DOI: https://doi.org/10.5217/ir.2020.00172

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Statements

IBD

Korean Association for the Study of Intestinal Diseases guidance for clinical practice of adult inflammatory bowel disease during the coronavirus disease 2019 pandemic: expert consensus statements: Yong Eun Park, Yoo Jin Lee, Ji Young Chang, Hyun Joo Song, Duk Hwan Kim, Young Joo Yang, Byung Chang Kim, Jae Gon Lee, Hee Chan Yang, Miyoung Choi, Seong-Eun Kim, Seung-Jae Myung; Intest Res 2022;20(4):431-444. Published online January 5, 2022; DOI: https://doi.org/10.5217/ir.2021.00111

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Many unexpected problems have resulted from the unprecedented coronavirus disease 2019 (COVID-19) pandemic. The optimal management of patients with inflammatory bowel disease (IBD) during the COVID-19 pandemic has also been a challenge. Therefore, the Korean Association for the Study of Intestinal Diseases (KASID) developed a consensus statement of experts regarding the management of IBD during the COVID-19 pandemic. This consensus statement made recommendations regarding the risk and treatment of COVID-19 in IBD patients. This statement emphasizes that IBD is not a risk factor for COVID-19, and care should be taken not to exacerbate IBD in patients in remission state by maintaining their medications, except for corticosteroids.

Citations

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Mobile monitoring system detects the disease activity pattern and shows the association with clinical outcomes in patients with newly diagnosed Crohn’s disease
Yoo Jin Lee, Sang Gyu Kwak, Eun Soo Kim, Sung Kook Kim, Hyun Seok Lee, Yun Jin Chung, Byung Ik Jang, Kyeong Ok Kim, Jeongseok Kim, Hyeong Ho Jo, Eun Young Kim
Scientific Reports.2024;[Epub] CrossRef
Update on SARS-CoV-2 vaccination of patients with inflammatory bowel disease: what clinicians need to know
Yoo Jin Lee, Seong-Eun Kim, Yong Eun Park, Ji Young Chang, Hyun Joo Song, Duk Hwan Kim, Young Joo Yang, Byung Chang Kim, Jae Gon Lee, Hee Chan Yang, Seung-Jae Myung
Intestinal Research.2022; 20(3): 386. CrossRef

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IBD

SARS-CoV-2 vaccination for adult patients with inflammatory bowel disease: expert consensus statement by KASID: Yoo Jin Lee, Seong-Eun Kim, Yong Eun Park, Ji Young Chang, Hyun Joo Song, Duk Hwan Kim, Young Joo Yang, Byung Chang Kim, Jae Gon Lee, Hee Chan Yang, Miyoung Choi, Seung-Jae Myung, The Clinical Practice Guideline Committee of the Korean Association for the Study of the Intestinal Diseases (KASID); Intest Res 2022;20(2):171-183. Published online January 5, 2022; DOI: https://doi.org/10.5217/ir.2021.00098

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Coronavirus disease 2019 (COVID-19), caused by the novel coronavirus, is threatening global health worldwide with unprecedented contagiousness and severity. The best strategy to overcome COVID-19 is a vaccine. Various vaccines are currently being developed, and mass vaccination is in progress. Despite the very encouraging clinical trial results of these vaccines, there is insufficient information on the safety and efficacy of vaccines for inflammatory bowel disease (IBD) patients facing various issues. After reviewing current evidence and international guidelines, the Korean Association for the Study of Intestinal Diseases developed an expert consensus statement on COVID-19 vaccination issues for Korean IBD patients. This expert consensus statement emphasizes that severe acute respiratory syndrome coronavirus 2 vaccination be strongly recommended for IBD patients, and it is safe for IBD patients receiving immunomodulatory therapy.

Citations

Citations to this article as recorded by

COVID-19 vaccine updates for people under different conditions
Yijiao Huang, Weiyang Wang, Yan Liu, Zai Wang, Bin Cao
Science China Life Sciences.2024; 67(11): 2323. CrossRef
Effects of COVID-19 vaccines on patient-reported outcomes in patients with inflammatory bowel disease: a multicenter survey study in Korea
Jung Hyun Ji, Seung Hwan Shin, Yong Eun Park, Jihye Park, Jae Jun Park, Jae Hee Cheon, Tae Il Kim, Sang-Bum Kang, Sang Hyoung Park, Soo Jung Park
Intestinal Research.2024; 22(3): 336. CrossRef
Vaccination in patients with inflammatory bowel disease–Asian perspectives: the results of a multinational web-based survey in the 8th Asian Organization for Crohn’s and Colitis meeting
Su Bum Park, Kyeong Ok Kim, Hong Sub Lee, Chang Hwan Choi, Shu Chen Wei, Min Hu Chen, Katsuyoshi Matsuoka
Intestinal Research.2023; 21(3): 363. CrossRef
Beyond the survey, to the ideal therapy for Asian
Ki Jae Jo, Jong Pil Im
Intestinal Research.2023; 21(3): 280. CrossRef
Update on SARS-CoV-2 vaccination of patients with inflammatory bowel disease: what clinicians need to know
Yoo Jin Lee, Seong-Eun Kim, Yong Eun Park, Ji Young Chang, Hyun Joo Song, Duk Hwan Kim, Young Joo Yang, Byung Chang Kim, Jae Gon Lee, Hee Chan Yang, Seung-Jae Myung
Intestinal Research.2022; 20(3): 386. CrossRef
Vaccination strategies for Korean patients with inflammatory bowel disease
Yoo Jin Lee, Eun Soo Kim
The Korean Journal of Internal Medicine.2022; 37(5): 920. CrossRef
SARS-CoV-2 Infection and Outcomes in Children with Inflammatory Bowel Diseases: A Systematic Review
Anastasia Batsiou, Petros Mantzios, Daniele Piovani, Andreas G. Tsantes, Paschalia Kopanou Taliaka, Paraskevi Liakou, Nicoletta Iacovidou, Argirios E. Tsantes, Stefanos Bonovas, Rozeta Sokou
Journal of Clinical Medicine.2022; 11(23): 7238. CrossRef

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Reviews

Variable Clinical Classifications and Diagnostic Coding Systems of Colorectal Neuroendocrine Tumor: Byung Chang Kim, Cheol Hee Park, Tae Il Kim, Suck-Ho Lee, Jin-Oh Kim, Hyun Soo Kim, Dong-Hoon Yang, Bora Keum, Sung Pil Hong, Seong-Eun Kim, Hyun Gun Kim, Jeong Eun Shin, Jae Myung Cha, Young Eun Joo, Dong Il Park, Hwang Choi, Kyu Chan Huh, Seung-Jae Myung, Dong Kyung Chang, Seun Ja Park; Intest Res 2013;11(1):14-22. Published online January 31, 2013; DOI: https://doi.org/10.5217/ir.2013.11.1.14

Abstract PDF

The incidence of colorectal carcinoid tumor is recently increasing as screening colonoscopy increased. Traditional carcinoid tumor had been known as low grade, malignant neuroendocrine cell orign tumor. In 2000, World Health Organization (WHO) suggested that carcinoid was called well-differentiated neuroendocrine tumor (NET). It recently updated in 2010 by WHO; according to the differentiation and malignant potential, NET classified with NET Grade 1, Grade 2, and neuroendocrine carcinoma. They suggested that NET had malignant potential in accordance with histopathologic characteristics. Therefore, WHO recommended the behavior code of NET as malignant. However, European Neuroendocrine Tumor Society (ENETS) proposed the behavior of NET to four grades based on the histopathologic features; benign, benign or low grade malignant, low grade malignant, and high grade malignant. Also, American Joint Committee on Cancer (AJCC) suggested that topography codes of NET were defined as malignant. Korean Standard Classification of Diseases (KCD) described the different codings of carcinoid (NET). The discrepancies of behavior code or coding system exist among WHO, ENETS, AJCC and KCD. Also, there were differences in the perception for topographic coding system between clinicians and pathologists. NETs of colorectum were reported with the variable clinical characteristics (especially, metastasis) and long term prognosis from many studies. Especially, risk of metastasis and long term prognosis of small sized NET (<1 cm) had some discrepancies and should be investigated prospectively. Therefore, the consensus about topographic codes of NET should be needed with multidisplinary approach among gastroenterologists, pathologists and surgeons. (Intest Res 2013;11:14-22)

Citations

Citations to this article as recorded by

Efficacy of Precut Endoscopic Mucosal Resection for Treatment of Rectal Neuroendocrine Tumors
Hoonsub So, Su Hyun Yoo, Seungbong Han, Gwang-un Kim, Myeongsook Seo, Sung Wook Hwang, Dong-Hoon Yang, Jeong-Sik Byeon
Clinical Endoscopy.2017; 50(6): 585. CrossRef
Diagnostic Coding for Intramucosal Carcinoma and Neuroendocrine Tumor in the Colorectum: Proposal for Avoiding Confusing Coding in Korea
Dong Soo Han, Jin Hee Sohn, Jeong-Sik Byeon, Hwang Choi, Joon Mee Kim
Clinical Endoscopy.2015; 48(3): 216. CrossRef
Highlights from the 50th Seminar of the Korean Society of Gastrointestinal Endoscopy
Eun Young Kim, Il Ju Choi, Kwang An Kwon, Ji Kon Ryu, Seok Ho Dong, Ki Baik Hahm
Clinical Endoscopy.2014; 47(4): 285. CrossRef

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Clinical Classification of Colorectal Epithelial Tumors and Proposal for Diagnostic Coding: Hyun Gun Kim, Jin-Oh Kim, Suck-Ho Lee, Chang Kyun Lee, Hyun Soo Kim, Hwang Choi, Dong-Hoon Yang, Bora Keum, Sung Pil Hong, Seong-Eun Kim, Byung Chang Kim, Jeong Eun Shin, Cheol Hee Park, Chang Soo Eun, Tae Il Kim, Dong Il Park, Kyu Chan Huh, Dong Kyung Chang, Seun Ja Park; Intest Res 2011;9(1):1-11. Published online April 30, 2011; DOI: https://doi.org/10.5217/ir.2011.9.1.1

Abstract PDF

The Korean Standard Classification of Diseases (KCD), which reflects the International Classification of Diseases (ICD), is a fundamental coding system for the diagnosis of colorectal epithelial tumors. The KCD coding of colorectal lesions is entirely up to the clinician and is based on pathologic reports. However, coding discrepancies have arisen among physicians using the KCD and pathologists using the ICD for Oncology-3 (ICD-O-3). The Korean Society of Pathologists recently proposed a standardized pathology-reporting format and guidelines for the coding of colorectal cancer to decrease these discrepancies among pathologists. However, ICD and ICD-O are simple classification codes based on pathologic reports, and are neither intended nor suitable for indexing of distinct clinical entities. For appropriate diagnostic coding using the KCD, a corrected coding principle based upon pathologic reports is required, and unified coding between KCD and ICD-O is necessary. A standardized pathologic report format and communication with understanding between physicians and pathologists should be established. Additionally, the private medical insurance system for colorectal cancer should be revised to reduce conflicts among patients, clinicians, and insurance companies over the medical coding system. (Intest Res 2011;9: 2-11)

Citations

Citations to this article as recorded by

Diagnostic Coding for Intramucosal Carcinoma and Neuroendocrine Tumor in the Colorectum: Proposal for Avoiding Confusing Coding in Korea
Dong Soo Han, Jin Hee Sohn, Jeong-Sik Byeon, Hwang Choi, Joon Mee Kim
Clinical Endoscopy.2015; 48(3): 216. CrossRef
Diminutive and Small Colorectal Polyps: The Pathologist's Perspective
Yun Kyung Kang
Clinical Endoscopy.2014; 47(5): 404. CrossRef
Early Colorectal Epithelial Neoplasm in Korea: A Multicenter Survey of Pathologic Diagnosis
Yun Kyung Kang, So-Young Jin, Mee Soo Chang, Jung Yeon Kim, Gyeong Hoon Kang, Hye Seung Lee, Jin Hee Sohn, Ho Sung Park, Kye Won Kwon, Mi Jin Gu, Young Hee Maeng, Jong Eun Joo, Haeng Ji Kang, Hee Kyung Kim, Kee-Taek Jang, Mi Ja Lee, Hee Kyung Chang, Joon
Korean Journal of Pathology.2013; 47(3): 245. CrossRef
Update on the Proposal for Creating a Guideline for Cancer Registration of the Gastrointestinal Tumors (I-2)
Eun Sun Jung, Yun Kyung Kang, Mee-Yon Cho, Joon Mee Kim, Won Ae Lee, Hee Eun Lee, Sunhoo Park, Jin Hee Sohn, So-Young Jin
Korean Journal of Pathology.2012; 46(5): 443. CrossRef

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