Intestinal Research

IBD

A novel serum biomarker of endoscopic mucosal healing in inflammatory bowel disease: Hyoun Woo Kang; Intest Res 2024;22(1):3-4. Published online January 29, 2024; DOI: https://doi.org/10.5217/ir.2023.00198

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IBD

Regional variations in the prevalence of primary sclerosing cholangitis associated with inflammatory bowel disease: Kwang Woo Kim, Hyoun Woo Kang; Intest Res 2023;21(4):413-414. Published online October 26, 2023; DOI: https://doi.org/10.5217/ir.2023.00133

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Halitosis: an underestimated but important extraintestinal manifestation in inflammatory bowel disease
Xiao Xian Qian
Intestinal Research.2024; 22(3): 387. CrossRef

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IBD

Concomitant ankylosing spondylitis can increase the risk of biologics or small molecule therapies to control inflammatory bowel disease: Yu Kyung Jun, Hyuk Yoon, Seong-Joon Koh, A Hyeon Kim, Kwang Woo Kim, Jun Won Park, Hyun Jung Lee, Hyoun Woo Kang, Jong Pil Im, Young Soo Park, Joo Sung Kim, on behalf of Seoul National University Inflammatory Bowel Disease Research Network (SIRN); Intest Res 2023;21(2):244-251. Published online August 8, 2022; DOI: https://doi.org/10.5217/ir.2022.00057

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Background/Aims
Patients with inflammatory bowel disease (IBD) are diagnosed with ankylosing spondylitis (AS) often. However, the disease course of patients with both IBD and AS is not well understood. This study aims to evaluate the effect of concomitant AS on IBD outcomes.
Methods
Among the 4,722 patients with IBD who were treated in 3 academic hospitals from 2004 to 2021, 55 were also diagnosed with AS (IBD-AS group). Based on patients’ electronic medical records, the outcomes of IBD in IBD-AS group and IBD group without AS (IBD-only group) were appraised.
Results
The proportion of patients treated with biologics or small molecule therapies was significantly higher in IBD-AS group than the proportion in IBD-only group (27.3% vs. 12.7%, P= 0.036). Patients with both ulcerative colitis and AS had a significantly higher risk of biologics or small molecule therapies than patients with only ulcerative colitis (P< 0.001). For univariable logistic regression, biologics or small molecule therapies were associated with concomitant AS (odds ratio, 4.099; 95% confidence interval, 1.863–9.021; P< 0.001) and Crohn’s disease (odds ratio, 3.552; 95% confidence interval, 1.590–7.934; P= 0.002).
Conclusions
Concomitant AS is associated with the high possibility of biologics or small molecule therapies for IBD. IBD patients who also had AS may need more careful examination and active treatment to alleviate the severity of IBD.

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Author's Reply: “Association of early antibiotic use with risk of ulcerative colitis”
Junseok Park, Sungjin Woo, Seong-Joon Koh
Digestive and Liver Disease.2025;[Epub] 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

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Miscellaneous

Vegetarianism as a protective factor for asymptomatic colonic diverticulosis in Asians: a retrospective cross-sectional and case-control study: Jihun Bong, Hyoun Woo Kang, Hyeki Cho, Ji Hyung Nam, Dong Kee Jang, Jae Hak Kim, Jun Kyu Lee, Yun Jeong Lim, Moon-Soo Koh, Jin Ho Lee; Intest Res 2020;18(1):121-129. Published online November 1, 2019; DOI: https://doi.org/10.5217/ir.2019.00106

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Background/Aims
Dietary fiber intake is considered a protective factor for diverticular disease such as diverticulitis. However, evidence for an inverse connection between dietary fiber consumption and asymptomatic colonic diverticulosis is lacking. Specifically, few studies have investigated this subject in Asians with different presentations of diverticulosis. Therefore, we assessed the protective effects of a vegetarian diet for asymptomatic colonic diverticulosis in Buddhist monks who are obligatory vegetarians for spiritual reasons compared with the general population.
Methods
A retrospective, cross-sectional, case-control study was conducted in age- and sex-matched Buddhist monks and the general population who underwent colonoscopy for screening at a Korean health promotion center from August 2005 to June 2018. We compared the prevalence of asymptomatic diverticulosis between the 2 groups using a self-administered questionnaire.
Results
In this study, a total of 1,316 individuals were included (Buddhist monks of 658 and general population of 658) with a mean age of 52.6±9.5 years. The prevalence of asymptomatic diverticulosis in Buddhist monks was lower compared with the general population (6.7% [44/658] vs. 10.8% [71/658], P=0.008). Buddhist monks had a higher rate of high body mass index (BMI) and metabolic syndrome. By a multivariate regression analysis model, a nonvegetarian diet (odds ratio [OR], 1.82; 95% confidence interval [CI], 1.21–2.72, P=0.004), old age (OR, 4.53; 95% CI, 1.36–15.12; P=0.014), male sex (OR, 1.91; 95% CI, 1.28–2.85; P=0.002), and a high BMI (OR, 1.50; 95% CI, 1.01–2.23; P=0.047) were independent predictors of asymptomatic diverticulosis. Moreover, a nonvegetarian diet was associated with both right-sided and left-sided diverticulosis.
Conclusions
A nonvegetarian diet may increase a risk of asymptomatic colonic diverticulosis in Asians.

Citations

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Association of Metabolic Syndrome Components and Colonic Diverticulosis in the Very Elderly: A Tertiary Health Network Study
Hammad Liaquat, Farah Harmouch, Nishit Patel, Zarian Prenatt, Jill Stoltzfus, Berhanu Geme, Noel Martins, Kimberly Chaput
Cureus.2024;[Epub] 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
Age, alcohol, sex, and metabolic factors as risk factors for colonic diverticulosis
Ye Yan, Jian-Sheng Wu, Shuang Pan
World Journal of Clinical Cases.2022; 10(1): 136. CrossRef
Diagnosis and Treatment of Colonic Diverticular Disease
You Sun Kim
The Korean Journal of Gastroenterology.2022; 79(6): 233. CrossRef
The prevalence of right‐sided colonic diverticulosis in a New Zealand population
Greg A. Turner, Michael J. O'Grady, Sajith C. Senadeera, Chris J. Wakeman, Andrew McCombie, Rachel V. Purcell, Frank A. Frizelle
ANZ Journal of Surgery.2021; 91(10): 2110. CrossRef
The Epidemiology and Etiology of Right-Sided Colonic Diverticulosis: A Review
Greg A. Turner, Michael J. O’Grady, Rachel V. Purcell, Frank A. Frizelle
Annals of Coloproctology.2021; 37(4): 196. CrossRef

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Endoscopy

Surveillance colonoscopy in patients with sessile serrated adenoma: Ji Hyung Nam, Hyoun Woo Kang; Intest Res 2018;16(3):502-503. Published online July 27, 2018; DOI: https://doi.org/10.5217/ir.2018.16.3.502

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Letter: Patient Description of Rectal Effluents With Photographic Examples as a Predictive Indicator for the Quality of Bowel Preparation: Hyoun Woo Kang; Intest Res 2015;13(4):362-363. Published online October 15, 2015; DOI: https://doi.org/10.5217/ir.2015.13.4.362

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Author's Reply
Hoonsub So, Seungbong Han, Dong-Hoon Yang
Intestinal Research.2015; 13(4): 364. CrossRef

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Computer-aided System for Predicting the Histology of Colorectal Tumors by Using Narrow-band Imaging Magnifying Colonoscopy (Gastrointest Endosc 2012;75:179-185): Hyoun Woo Kang; Intest Res 2012;10(2):215-218. Published online April 30, 2012; DOI: https://doi.org/10.5217/ir.2012.10.2.215

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The diagnostic accuracy of artificial intelligence and computer-aided diagnosis for the detection and characterisation of colorectal polyps: A systematic review and meta-analysis. (Preprint)
Scarlet Nazarian, Ben Glover, Hutan Ashrafian, Ara Darzi, Julian Teare
Journal of Medical Internet Research.2021;[Epub] CrossRef

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