Intestinal Research

IBD

The impact of sleep quality on the prognosis of inflammatory bowel disease commonly overlooked by gastroenterologists: Ji Young Chang; Intest Res 2024;22(1):5-7. Published online January 29, 2024; DOI: https://doi.org/10.5217/ir.2023.00193

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Chronic Poor Sleep is Associated with Increased Disease Activity in Patients with Ulcerative Colitis: Prospective Observational Study in Japan
Hideaki Oyama, Rintaro Moroi, Atsushi Sakuma, Yusuke Shimoyama, Hiroshi Nagai, Takeo Naito, Hisashi Shiga, Yoichi Kakuta, Yoshitaka Kinouchi, Atsushi Masamune
Journal of Crohn's and Colitis.2024;[Epub] CrossRef

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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

Which biomarkers best reflect the degree of inflammation in Crohn’s disease?: Jihye Park; Intest Res 2024;22(1):1-2. Published online January 29, 2024; DOI: https://doi.org/10.5217/ir.2023.00161

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Colorectal neoplasia

Clinical characteristics and risk factors related to polyposis recurrence and advanced neoplasm development among patients with non-hereditary colorectal polyposis: Jihun Jang, Jihye Park, Soo Jung Park, Jae Jun Park, Jae Hee Cheon, Tae Il Kim; Intest Res 2023;21(4):510-517. Published online May 31, 2023; DOI: https://doi.org/10.5217/ir.2022.00139

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Background/Aims
Patients with more than 10 cumulative polyps might involve a greater genetic risk of colorectal neoplasia development. However, few studies have investigated the risk factors of polyposis recurrence and development of advanced neoplasms among patients with non-hereditary colorectal polyposis.
Methods
This study included patients (n=855) with 10 or more cumulative polyps diagnosed at Severance Hospital from January 2012 to September 2021. Patients with known genetic mutations related to polyposis, known hereditary polyposis syndromes, insufficient information, total colectomy, and less than 3 years of follow-up were excluded. Finally, 169 patients were included for analysis. We collected clinical data, including colonoscopy surveillance results, and performed Cox regression analyses of risk factors for polyposis recurrence and advanced neoplasm development.
Results
The 169 patients were predominantly male (84.02%), with a mean age of 64.19±9.92 years. The mean number of adenomas on index colonoscopy was 15.33±8.47. Multivariable analysis revealed history of cancer except colon cancer (hazard ratio [HR], 2.23; 95% confidence interval [CI], 1.23–4.01), current smoking (HR, 2.39; 95% CI, 1.17–4.87), and detection of many polyps (≥15) on index colonoscopy (HR, 2.05; 95% CI, 1.21–3.50) were significant risk factors for recurrence of polyposis. We found no statistically significant risk factors for advanced neoplasm development during surveillance among our cohort.
Conclusions
The presence of many polyps (≥15) on index colonoscopy, history of cancer except colon cancer, and current smoking state were significant risk factors for polyposis recurrence among patients with non-hereditary colorectal polyposis.

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Screening and surveillance for hereditary colorectal cancer
Hee Man Kim, Tae Il Kim
Intestinal Research.2024; 22(2): 119. CrossRef

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Colorectal neoplasia

The elderly population are more vulnerable for the management of colorectal cancer during the COVID-19 pandemic: a nationwide, population-based study: Hong Sun Kang, Seung Hoon Jeon, Su Bee Park, Jin Young Youn, Min Seob Kwak, Jae Myung Cha; Intest Res 2023;21(4):500-509. Published online August 29, 2023; DOI: https://doi.org/10.5217/ir.2023.00004

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Background/Aims
The impact of coronavirus disease 2019 (COVID-19) on the management of colorectal cancer (CRC) may worse in elderly population, as almost all COVID-19 deaths occurred in the elderly patients. This study aimed to evaluate the impact of COVID-19 on CRC management in the elderly population.
Methods
The numbers of patients who underwent colonoscopy, who visited hospitals or operated for CRC in 2020 and 2021 (COVID-19 era) were compared with those in 2019, according to 3 age groups (≥70 years, 50–69 years, and ≤49 years), based on the nationwide, population-based database (2019–2021) in South Korea.
Results
The annual volumes of colonoscopy and hospital visits for CRC in 2020 were more significantly declined in the old age group than in the young age group (both P<0.001). In addition, the annual volume of patients operated for CRC numerically more declined in old age group than in young age group. During the first surge of COVID-19 (March and April 2020), old age patients showed statistically significant declines for the monthly number of colonoscopies (–46.5% vs. –39.3%, P<0.001), hospital visits (–15.4% vs. –7.9%, P<0.001), CRC operations (–33.8% vs. –0.7%, P<0.05), and colonoscopic polypectomies (–41.8% vs. –38.0%, P<0.001) than young age patients, compared with those of same months in 2019.
Conclusions
Elderly population are more vulnerable for the management of CRC during the COVID-19 pandemic. Therefore, the elderly population are more carefully cared for in the management of CRC during the next pandemic.

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To overcome medical gap in screening and surveillance of colorectal cancer during the COVID-19 pandemic
Yoo Min Han
Intestinal Research.2023; 21(4): 418. CrossRef

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Infection

How the COVID-19 pandemic affected the severity and clinical presentation of diverticulitis: Sara S. Soliman, Rolando H. Rolandelli, Grace C. Chang, Amanda K. Nemecz, Zoltan H. Nemeth; Intest Res 2023;21(4):493-499. Published online October 26, 2023; DOI: https://doi.org/10.5217/ir.2022.00042

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Background/Aims
Single-institution studies showed that patients presented with more severe diverticulitis and underwent more emergency operations during the coronavirus disease 2019 (COVID-19) pandemic. Therefore, we studied this trend using nationwide data from the American College of Surgeons National Surgical Quality Improvement Program database.
Methods
Patients (n = 23,383) who underwent a colectomy for diverticulitis in 2018 (control year) and 2020 (pandemic year) were selected. We compared these groups for differences in disease severity, comorbidities, perioperative factors, and complications.
Results
During the pandemic, colonic operations for diverticulitis decreased by 13.14%, but the rates of emergency operations (17.31% vs. 20.04%, P< 0.001) and cases with a known abscess/perforation (50.11% vs. 54.55%, P< 0.001) increased. Likewise, the prevalence of comorbidities, such as congestive heart failure, acute renal failure, systemic inflammatory response syndrome, and septic shock, were higher during the pandemic (P< 0.05). During this same period, significantly more patients were classified under American Society of Anesthesiologists classes 3, 4, and 5, suggesting their preoperative health states were more severe and life-threatening. Correspondingly, the average operation time was longer (P< 0.001) and complications, such as organ space surgical site infection, wound disruption, pneumonia, acute renal failure, septic shock, and myocardial infarction, increased (P< 0.05) during the pandemic.
Conclusions
During the pandemic, surgical volume decreased, but the clinical presentation of diverticulitis became more severe. Due to resource reallocation and possibly patient fear of seeking medical attention, diverticulitis was likely underdiagnosed, and cases that would have been elective became emergent. This underscores the importance of monitoring patients at risk for diverticulitis and intervening when criteria for surgery are met.

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Surgical and non-operative treatment of acute complicated diverticulitis in a COVID hospital
A. E. Tyagunov, N. A. Shcherbakov, R. R. Akhmedov, N. S. Donchenko, B. K. Laipanov, Z. M. Alieva, E. A. Stradymov, A. V. Tavadov, A. T. Mirzoyan, D. D. Fyodorov, A. A. Tyagunov, A. V. Sazhin
Koloproktologia.2024; 23(2): 108. CrossRef

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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.

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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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IBD

Malnutrition and inflammation status in nonobese patients with inflammatory bowel disease are associated with nonalcoholic fatty liver disease: a retrospective study: Takahiro Nagata, Sadahiro Funakoshi, Daisuke Morihara, Satoshi Shakado, Keiji Yokoyama, Kazuhide Takata, Takashi Tanaka, Atsushi Fukunaga, Ryo Yamauchi, Hiromi Fukuda, Hiroki Matsuoka, So Imakiire, Hideto Sakisaka, Satoshi Matsuoka, Nobuaki Kuno, Koichi Abe, Hideki Ishibashi, Shinya Ashizuka, Fumihito Hirai; Intest Res 2023;21(4):471-480. Published online August 11, 2023; DOI: https://doi.org/10.5217/ir.2023.00035

Abstract PDF PubReader ePub: Background/Aims
The frequency and details of nonalcoholic fatty liver disease (NAFLD) complications in patients with inflammatory bowel disease (IBD) remain unclear. This study aimed to clarify characteristics of NAFLD in patients with IBD.
Methods
We retrospectively identified and enrolled patients with IBD diagnosed with or without NAFLD by undergoing abdominal computed tomography (CT) at our institution between 2005 and 2020. The primary endpoint was the complication rate of NAFLD in patients with IBD. Secondary endpoints were the clinical characteristics of nonobese patients with IBD and comorbid NAFLD and their association with nutritional and inflammatory parameters.
Results
Twenty-one (21.9%) of 96 eligible patients with IBD also had NAFLD. In nonobese patients (defined as patients with a body mass index <25 kg/m²), C-reactive protein (CRP; P<0.001) and alanine aminotransferase (P=0.018) levels were higher and the albumin level (P=0.005) and prognostic nutritional index (PNI; P=0.002) values were lower in patients with NAFLD than in those without NAFLD. The PNI value was positively correlated (P<0.001) and the CRP level was negatively correlated (P=0.001) with the hepatosplenic ratio. However, in the NAFLD combined group, PNI (P<0.05) and CRP values (P<0.001) were improved over time after CT imaging by continuing IBD treatment.
Conclusions
Worsening nutritional and inflammatory status in IBD patients is associated with complications of NAFLD. Diagnosis of NAFLD in IBD patients using CT imaging might be useful not only for early detection of NAFLD but also in assessing the need for therapeutic intervention for IBD.

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IBD

Serum albumin is the strongest predictor of anti-tumor necrosis factor nonresponse in inflammatory bowel disease in resource-constrained regions lacking therapeutic drug monitoring: Peeyush Kumar, Sudheer K. Vuyyuru, Prasenjit Das, Bhaskar Kante, Mukesh Kumar Ranjan, David Mathew Thomas, Sandeep Mundhra, Pabitra Sahu, Pratap Mouli Venigalla, Saransh Jain, Sandeep Goyal, Rithvik Golla, Shubi Virmani, Mukesh K. Singh, Karan Sachdeva, Raju Sharma, Nihar Ranjan Dash, Govind Makharia, Saurabh Kedia, Vineet Ahuja; Intest Res 2023;21(4):460-470. Published online March 17, 2023; DOI: https://doi.org/10.5217/ir.2022.00128

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Background/Aims
Evidence on predictors of primary nonresponse (PNR), and secondary loss of response (SLR) to anti-tumor necrosis factor (anti-TNF) agents in inflammatory bowel disease is scarce from Asia. We evaluated clinical/biochemical/molecular markers of PNR/SLR in ulcerative colitis (UC) and Crohn’s disease (CD).
Methods
Inflammatory bowel disease patients treated with anti-TNF agents (January 2005–October 2020) were ambispectively included. Data concerning clinical and biochemical predictors was retrieved from a prospectively maintained database. Immunohistochemistry for expression of oncostatin M (OSM), OSM receptor (OSM-R), and interleukin-7 receptor (IL-7R) were done on pre anti-TNF initiation mucosal biopsies.
Results
One-hundred eighty-six patients (118 CD, 68 UC: mean age, 34.1±13.7 years; median disease duration at anti-TNF initiation, 60 months; interquartile range, 28–100.5 months) were included. PNR was seen in 17% and 26.5% and SLR in 47% and 28% CD and UC patients, respectively. In CD, predictors of PNR were low albumin (P<0.001), postoperative recurrence (P=0.001) and high IL-7R expression (P<0.027) on univariate; and low albumin alone (hazard ratio [HR], 0.09; 95% confidence interval [CI], 0.03–0.28; P<0.001) on multivariate analysis respectively. Low albumin (HR, 0.31; 95% CI, 0.15–0.62; P=0.001) also predicted SLR. In UC, predictors of PNR were low albumin (P<0.001), and high C-reactive protein (P<0.001), OSM (P<0.04) and OSM-R (P=0.07) stromal expression on univariate; and low albumin alone (HR, 0.11; 95% CI, 0.03–0.39; P=0.001) on multivariate analysis respectively.
Conclusions
Low serum albumin at baseline significantly predicted PNR in UC and PNR/SLR in CD patients. Mucosal markers of PNR were high stromal OSM/OSM-R in UC and high IL-7R in CD patients.

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Effectiveness of Switching to Subcutaneous Infliximab in Ulcerative Colitis Patients Experiencing Intravenous Infliximab Failure
June Hwa Bae, Jung-Bin Park, Ji Eun Baek, Seung Wook Hong, Sang Hyoung Park, Dong-Hoon Yang, Byong Duk Ye, Jeong-Sik Byeon, Seung-Jae Myung, Suk-Kyun Yang, Sung Wook Hwang
Gut and Liver.2024; 18(4): 667. CrossRef
Tofacitinib in Steroid-Refractory Acute Severe Ulcerative Colitis: A Retrospective Analysis
Sayan Malakar, Srikanth Kothalkar, Umair Shamsul Hoda, Uday C Ghoshal
Cureus.2023;[Epub] CrossRef

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IBD

Low prevalence of primary sclerosing cholangitis in patients with inflammatory bowel disease in India: Arshdeep Singh, Vandana Midha, Vikram Narang, Saurabh Kedia, Ramit Mahajan, Pavan Dhoble, Bhavjeet Kaur Kahlon, Ashvin Singh Dhaliwal, Ashish Tripathi, Shivam Kalra, Narender Pal Jain, Namita Bansal, Rupa Banerjee, Devendra Desai, Usha Dutta, Vineet Ahuja, Ajit Sood; Intest Res 2023;21(4):452-459. Published online December 2, 2022; DOI: https://doi.org/10.5217/ir.2022.00087

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Background/Aims
Primary sclerosing cholangitis (PSC) represents the most common hepatobiliary extraintestinal manifestation of inflammatory bowel disease (IBD), including ulcerative colitis (UC) and Crohn’s disease (CD). Limited data exist on PSC in patients with IBD from India. We aimed to assess the prevalence and disease spectrum of PSC in Indian patients with IBD.
Methods
Database of IBD patients at 5 tertiary care IBD centers in India were analyzed retrospectively. Data were extracted and the prevalence of PSC-IBD was calculated.
Results
Forty-eight patients out of 12,216 patients with IBD (9,231 UC, 2,939 CD, and 46 IBD unclassified) were identified to have PSC, resulting in a prevalence of 0.39%. The UC to CD ratio was 7:1. Male sex and pancolitis (UC) or colonic CD were more commonly associated with PSC-IBD. The diagnosis of IBD preceded the diagnosis of PSC in most of the patients. Majority of the patients were symptomatic for liver disease at diagnosis. Eight patients (16.66%) developed cirrhosis, 5 patients (10.41%), all UC, developed malignancies (3 colorectal cancer [6.25%] and 2 cholangiocarcinoma [4.16%]), and 3 patients died (2 decompensated liver disease [4.16%] and 1 cholangiocarcinoma [2.08%]) on follow-up. None of the patients mandated surgical therapy for IBD.
Conclusions
Concomitant PSC in patients with IBD is uncommon in India and is associated with lower rates of development of malignancies.

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Frequency, spectrum and outcome of patients with primary sclerosing cholangitis among patients presenting with cholestatic jaundice
Srikanth Kothalkar, Sayan Malakar, Piyush Mishra, Akash Mathur, Uday C. Ghoshal
Indian Journal of Gastroenterology.2024;[Epub] CrossRef
Primary sclerosing cholangitis (PSC) and inflammatory bowel disease (IBD): a condition exemplifying the crosstalk of the gut–liver axis
You Sun Kim, Edward H. Hurley, Yoojeong Park, Sungjin Ko
Experimental & Molecular Medicine.2023; 55(7): 1380. CrossRef
Treatment of primary sclerosing cholangitis combined with inflammatory bowel disease
You Sun Kim, Edward H. Hurley, Yoojeong Park, Sungjin Ko
Intestinal Research.2023; 21(4): 420. CrossRef
Regional variations in the prevalence of primary sclerosing cholangitis associated with inflammatory bowel disease
Kwang Woo Kim, Hyoun Woo Kang
Intestinal Research.2023; 21(4): 413. CrossRef

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Colorectal neoplasia

Summary and comparison of recently updated post-polypectomy surveillance guidelines: Yoon Suk Jung; Intest Res 2023;21(4):443-451. Published online October 26, 2023; DOI: https://doi.org/10.5217/ir.2023.00107

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Recently, updated guidelines for post-polypectomy surveillance have been published by the U.S. Multi‐Society Task Force (USMSTF), the British Society of Gastroenterology/Association of Coloproctology of Great Britain and Ireland/Public Health England (BSG/ACPGBI/PHE), the European Society of Gastrointestinal Endoscopy (ESGE), the Japan Gastroenterological Endoscopy Society (JGES), and the Korean Multi-Society Taskforce Committee. This review summarizes and compares the updated recommendations of these 5 guidelines. There are some differences between the guidelines for the recommended post-polypectomy surveillance intervals. In particular, there are prominent differences between the guidelines for 1–4 tubular adenomas < 10 mm with low-grade dysplasia (nonadvanced adenomas [NAAs]) and tubulovillous or villous adenomas. The USMSTF, JGES, and Korean guidelines recommend colonoscopic surveillance for patients with 1–4 NAAs and those with tubulovillous or villous adenomas, whereas the BSG/ACPGBI/PHE and ESGE guidelines do not recommend endoscopic surveillance for such patients. Surveillance recommendations for patients with serrated polyps (SPs) are limited. Although the USMSTF guidelines provide specific recommendations for patients who have undergone SPs removal, these are weak and based on very lowquality evidence. Future studies should examine this topic to better guide the surveillance recommendations for patients with SPs. For countries that do not have separate guidelines, we hope that this review article will help select the most appropriate guidelines as per each country’s healthcare environment.

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Causal association between telomere length and colorectal polyps: A bidirectional two-sample Mendelian randomization study
Yin Zhang, Jiaying Wang, Mingyu Zheng, Huanwei Qu, Shuya Yang, Fuzhou Han, Nan Yao, Wenqiang Li, Jun Qu
Medicine.2024; 103(1): e36867. CrossRef
Screening and surveillance for hereditary colorectal cancer
Hee Man Kim, Tae Il Kim
Intestinal Research.2024; 22(2): 119. CrossRef
Screening and Surveillance of Colorectal Cancer: A Review of the Literature
Marcello Maida, Dushyant Singh Dahiya, Yash R. Shah, Angad Tiwari, Harishankar Gopakumar, Ishaan Vohra, Aqsa Khan, Fouad Jaber, Daryl Ramai, Antonio Facciorusso
Cancers.2024; 16(15): 2746. CrossRef

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Microbiota

Gut microbiome on immune checkpoint inhibitor therapy and consequent immune-related colitis: a review: Sung Wook Hwang, Min Kyu Kim, Mi-Na Kweon; Intest Res 2023;21(4):433-442. Published online August 29, 2023; DOI: https://doi.org/10.5217/ir.2023.00019

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Immune checkpoint inhibitors have dramatically revolutionized the therapeutic landscape for patients with advanced malignancies. Recently, convincing evidence has shown meaningful influence of gut microbiome on human immune system. With the complex link between gut microbiome, host immunity and cancer, the variations in the gut microbiota may influence the efficacy of immune checkpoint inhibitors. Indeed, some bacterial species have been reported to be predictive for cancer outcome in patients treated with immune checkpoint inhibitors. Although immune checkpoint inhibitors are currently proven to be an effective anti-tumor treatment, they can induce a distinct form of toxicity, termed immune-related adverse events. Immune-related colitis is one of the common toxicities from immune checkpoint inhibitors, and it might preclude the cancer therapy in severe or refractory cases. The manipulation of gut microbiome by fecal microbiota transplantation or probiotics administration has been suggested as one of the methods to enhance anti-tumor effects and decrease the risk of immune-related colitis. Here we review the role of gut microbiome on immune checkpoint inhibitor therapy and consequent immune-related colitis to provide a new insight for better anti-cancer therapy.

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Date yogurt supplemented with Lactobacillus rhamnosus (ATCC 53103) encapsulated in wild sage (Salvia macrosiphon) mucilage and sodium alginate by extrusion: The survival and viability against the gastrointestinal condition, cold storage, heat, and salt wi
Mahsa Abbasi Saadi, Seyed Saeed Sekhavatizadeh, Hassan Barzegar, Behrooz Alizadeh Behbahani, Mohammad Amin Mehrnia
Food Science & Nutrition.2024;[Epub] CrossRef
Toxicity in the era of immune checkpoint inhibitor therapy
Synat Keam, Naimah Turner, Fernanda G. Kugeratski, Rene Rico, Jocelynn Colunga-Minutti, Rayansh Poojary, Sayan Alekseev, Anisha B. Patel, Yuanteng Jeff Li, Ajay Sheshadri, Monica E. Loghin, Karin Woodman, Ashley E. Aaroe, Sarah Hamidi, Priyanka Chandrasek
Frontiers in Immunology.2024;[Epub] CrossRef

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IBD

Treatment of primary sclerosing cholangitis combined with inflammatory bowel disease: You Sun Kim, Edward H. Hurley, Yoojeong Park, Sungjin Ko; Intest Res 2023;21(4):420-432. Published online September 1, 2023; DOI: https://doi.org/10.5217/ir.2023.00039

Abstract PDF PubReader ePub

Primary sclerosing cholangitis (PSC) is a progressive cholestatic, inflammatory, and fibrotic disease that is strongly associated with inflammatory bowel disease (IBD). PSC-IBD represents a unique disease entity and patients with this disease have an increased risk of malignancy development, such as colorectal cancer and cholangiocarcinoma. The pathogenesis of PSC-IBD involves genetic and environmental factors such as gut dysbiosis and bile acids alteration. However, despite the advancement of disease characteristics, no effective medical therapy has proven to have a significant impact on the prognosis of PSC. The treatment options for patients with PSC-IBD do not differ from those for patients with PSC alone. Potential candidate drugs have been developed based on the pathogenesis of PSC-IBD, such as those that target modulation of bile acids, inflammation, fibrosis, and gut dysbiosis. In this review, we summarize the current medical treatments for PSC-IBD and the status of new emerging therapeutic agents.

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Novel preclinical developments of the primary sclerosing cholangitis treatment landscape
Aalam Sohal, Kris V. Kowdley
Expert Opinion on Investigational Drugs.2024; 33(4): 335. CrossRef
Gut Microbiota in Primary Sclerosing Cholangitis: From Prognostic Role to Therapeutic Implications
Valeria Maccauro, Francesca Fianchi, Antonio Gasbarrini, Francesca Romana Ponziani
Digestive Diseases.2024; 42(4): 369. CrossRef
Global research trends on the relationship between IBD and CRC: a bibliometric analysis from 2000 to 2023
Hao Zhang, Huiru Xin, Mengqi Zhao, Chenyang Bi, Yafei Xiao, Yifan Li, Changjiang Qin
Journal of Health, Population and Nutrition.2024;[Epub] CrossRef
Halitosis: an underestimated but important extraintestinal manifestation in inflammatory bowel disease
Xiao Xian Qian
Intestinal Research.2024; 22(3): 387. CrossRef

4,441 View
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Colorectal neoplasia

To overcome medical gap in screening and surveillance of colorectal cancer during the COVID-19 pandemic: Yoo Min Han; Intest Res 2023;21(4):418-419. Published online October 26, 2023; DOI: https://doi.org/10.5217/ir.2023.00144

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Influence of the COVID-19 Pandemic on Patients with Rectal Cancer
Fiona Speichinger, Ann-Kathrin Berg, Ani Stoyanova, Johannes Christian Lauscher, Carsten Kamphues, Katharina Beyer, Claudia Seifarth, Nadia Slavova, Christian Schineis
Journal of Clinical Medicine.2024; 13(12): 3568. CrossRef

1,385 View
121 Download
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Infection

Not all acute colonic diverticulitis follows the same course: a potential risk for immunocompromised individuals: Yehyun Park; Intest Res 2023;21(4):415-417. Published online October 26, 2023; DOI: https://doi.org/10.5217/ir.2023.00142

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138 Download

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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Citations

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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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156 Download
1 Web of Science
1 Crossref

Miscellaneous

JAK inhibitor, a new player for treatment-refractory microscopic colitis: Anne Druez, Simon Travis, Jean-François Rahier; Intest Res 2023;21(3):411-412. Published online July 4, 2023; DOI: https://doi.org/10.5217/ir.2023.00030

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101 Download
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IBD

Clinical features of enteric and colo-duodenal fistula in patients with Crohn’s disease: Jun Su Lee, Sang-Bum Kang, Kwangbeom Park, Yong Sik Yoon, Chang Sik Yu, Sung Wook Hwang, Byong Duk Ye, Suk-Kyun Yang, Jong Lyul Lee, Sang Hyoung Park; Intest Res 2023;21(3):406-410. Published online February 22, 2023; DOI: https://doi.org/10.5217/ir.2022.00125

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The potential for medical therapies to address fistulizing Crohn’s disease: a state-of-the-art review
Mohammad Shehab, Davide De Marco, Peter L. Lakatos, Talat Bessissow
Expert Opinion on Biological Therapy.2024; 24(8): 733. CrossRef

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IBD

Prevalence of hepatitis B virus and hepatitis C virus infection in patients with inflammatory bowel disease: a systematic review and meta-analysis: Suprabhat Giri, Dhiraj Agrawal, Shivaraj Afzalpurkar, Sunil Kasturi, Amrit Gopan, Sridhar Sundaram, Aditya Kale; Intest Res 2023;21(3):392-405. Published online December 2, 2022; DOI: https://doi.org/10.5217/ir.2022.00094

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Background/Aims
The data on the prevalence of hepatitis B virus (HBV) and hepatitis C virus (HCV) infection in patients with inflammatory bowel disease (IBD) are conflicting. The present systematic review was thus conducted to study the prevalence of HBV and HCV markers in patients with IBD.
Methods
A comprehensive literature search of 3 databases was conducted from 2000 to April 2022 for studies evaluating the prevalence of HBV or HCV in patients with IBD. Pooled prevalence rates across studies were expressed with summative statistics.
Results
A total of 34 studies were included in the final analysis. The pooled prevalence of hepatitis B surface antigen (HBsAg) and hepatitis B core antibodies were 3.3% and 14.2%, respectively. In HBsAg positive IBD patients, hepatitis B e antigen positivity and detectable HBV DNA were seen in 15.3% and 61.0% of patients, respectively. Only 35.6% of the IBD patients had effective HBV vaccination. The pooled prevalence of anti-HCV and detectable HCV RNA were 1.8% and 0.8%, respectively. The pooled prevalence of markers of HBV infection was higher in Asian studies, while the prevalence of markers of HCV infection was higher in European studies. The prevalence of viral hepatitis markers was similar between IBD patients and the general population and that between ulcerative colitis and Crohn’s disease.
Conclusions
The prevalence of markers of viral hepatitis remains same as the general population with significant regional variations, although the quality of evidence remains low due to publication bias. Only a small proportion of IBD patients had an effective HBV vaccination, requiring improvement in screening and vaccination practices.

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Management of ulcerative colitis in Taiwan: consensus guideline of the Taiwan Society of Inflammatory Bowel Disease updated in 2023
Hsu-Heng Yen, Jia-Feng Wu, Horng-Yuan Wang, Ting-An Chang, Chung-Hsin Chang, Chen-Wang Chang, Te-Hsin Chao, Jen-Wei Chou, Yenn-Hwei Chou, Chiao-Hsiung Chuang, Wen-Hung Hsu, Tzu-Chi Hsu, Tien-Yu Huang, Tsung-I Hung, Puo-Hsien Le, Chun-Che Lin, Chun-Chi Lin
Intestinal Research.2024; 22(3): 213. CrossRef
Protective role of flavonoids quercetin and silymarin in the viral-associated inflammatory bowel disease: an updated review
Elham Zarenezhad, Hussein T. Abdulabbas, Ahmed Shayaa Kareem, Seyed Amin Kouhpayeh, Silvia Barbaresi, Sohrab Najafipour, Abdulbaset Mazarzaei, Mitra Sotoudeh, Abdolmajid Ghasemian
Archives of Microbiology.2023;[Epub] CrossRef
Infectious complications in patients with inflammatory bowel disease in Asia: the results of a multinational web-based survey in the 8th Asian Organization for Crohn’s and Colitis meeting
Yu Kyung Jun, Seong-Joon Koh, Dae Seong Myung, Sang Hyoung Park, Choon Jin Ooi, Ajit Sood, Jong Pil Im
Intestinal Research.2023; 21(3): 353. CrossRef
Ulcerative colitis coexisting with hepatitis C: A rare occurrence
Xiaoqiang Liu, Yisen Huan, Yubin Wang, Yingxuan Huang
Medicine.2023; 102(50): e36629. CrossRef

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IBD

Submucosal fat accumulation in Crohn’s disease: evaluation with sonography: Tomás Ripollés, María Jesús Martínez-Pérez, José María Paredes, José Vizuete, Gregorio Martin, Lidia Navarro; Intest Res 2023;21(3):385-391. Published online March 17, 2023; DOI: https://doi.org/10.5217/ir.2022.00030

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Background/Aims
The study objective is to investigate the ultrasound features that allow suspecting the presence of submucosal fat deposition, called the fat halo sign (FHS), in the intestinal wall of patients with Crohn’s disease.
Methods
Computed tomography (CT) examinations over a period of 10 years were reviewed for the presence of the FHS in the bowel wall. A measurement of less than –10 Hounsfield units was regarded as indicative of fat. We included only patients who had undergone ultrasound examinations 3 months before or after CT. The study cohort group comprised 68 patients. Wall and submucosal thickness were measured on longitudinal ultrasound sections. A receiver operating characteristic curve was constructed to determine the best cutoff of ultrasound submucosal wall thickness value for predicting FHS in the bowel wall determined on CT.
Results
The FHS was present in 22 patients (31%) on CT. There were significant differences between submucosal thickness of patients with FHS and patients without FHS (4.19 mm vs. 2.41 mm). From the receiver operating characteristic curve, a threshold value of 3.1 mm of submucosal thickness had the best sensitivity and specificity to suspect FHS (95.5% and 89.1%, respectively; area under the curve, 0.962), with an odds ratio of 172. All of 16 patients with a submucosal thickness >3.9 mm had FHS.
Conclusions
FHS in patients with Crohn’s disease can be suspected on ultrasound in cases with marked thickening of the submucosa layer. In these cases, the activity of the disease should be measured by other parameters such as the color Doppler.

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A novel serum biomarker of endoscopic mucosal healing in inflammatory bowel disease
Hyoun Woo Kang
Intestinal Research.2024; 22(1): 3. CrossRef
Role of Intestinal Ultrasound for IBD Care: A Practical Approach
Joerg C. Hoffmann, Tobias Ungewitter
Diagnostics.2024; 14(15): 1639. CrossRef

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IBD

Inflammatory bowel disease (IBD)-disk accurately predicts the daily life burden and parallels disease activity in patients with IBD: Arshdeep Singh, Yogesh Kumar Gupta, Ashvin Singh Dhaliwal, Bhavjeet Kaur Kahlon, Vasu Bansal, Ramit Mahajan, Varun Mehta, Dharmatma Singh, Ramandeep Kaur, Namita Bansal, Vandana Midha, Ajit Sood; Intest Res 2023;21(3):375-384. Published online October 18, 2022; DOI: https://doi.org/10.5217/ir.2022.00037

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Background/Aims
The inflammatory bowel disease (IBD)-disk is a validated, visual, 10-item, self-administered questionnaire used to evaluate IBD-related disability. The present study aimed to evaluate IBD-disk in assessment of IBD daily life burden and its relation with disease activity. Methods: A cross-sectional study was conducted between June 2021 and December 2021. Patients with IBD were asked to complete the IBD-disk and a visual analogue scale of IBD daily-life burden (scored from 0–10, score >5 indicative of high burden). The internal consistency of IBD-disk, correlation with IBD daily life burden and disease activity (assessed by partial Mayo score and Harvey Bradshaw Index in patients with ulcerative colitis [UC] and Crohn’s disease [CD], respectively) and diagnostic performance of IBD-disk to detect high burden were analyzed. Results: Out of the 546 patients (mean age 40.33±13.74 years, 282 [51.6%] males) who completed the IBD-disk, 464 (84.98%) had UC and the remaining (n=82, 15.02%) had CD. A total of 311 patients (291 UC and 20 CD; 56.95%) had active disease. The mean IBD-disk total score and IBD daily life burden were 18.39±15.23 and 2.45±2.02, respectively. The IBD-disk total score correlated strongly with the IBD daily life burden (ρ=0.94, P<0.001), moderately with partial Mayo score (ρ=0.50) and weakly with Harvey Bradshaw Index (ρ=0.34). The IBD-disk total score >30 predicted high IBD daily-life burden. Conclusions: The IBD-disk accurately predicts the daily life burden and parallels disease activity in patients with IBD and can be applied in clinical practice. (Intest Res, Published online)

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IBD-PODCAST Spain: A Close Look at Current Daily Clinical Practice in IBD Management
P. Vega, J. M. Huguet, E. Gómez, S. Rubio, P. Suarez, M. I. Vera, J. M. Paredes, A. Hernández-Camba, R. Plaza, M. Mañosa, R. Pajares, B. Sicilia, L. Madero, S. Kolterer, C. Leitner, T. Heatta-Speicher, N. Michelena, R. Santos de Lamadrid, A. Dignass, F. G
Digestive Diseases and Sciences.2024; 69(3): 749. CrossRef
Proportion of inflammatory bowel diseases patients with suboptimal disease control in daily clinical practice—Real‐world evidence from the inflammatory bowel diseases‐podcast study
Ferdinando D’Amico, Fernando Gomollón, Giorgos Bamias, Fernando Magro, Laura Targownik, Claudia Leitner, Tobias Heatta‐Speicher, Naiara Michelena, Stefanie Kolterer, Jennifer Lapthorn, Laura Kauffman, Axel Dignass
United European Gastroenterology Journal.2024; 12(6): 705. CrossRef

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IBD

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; Intest Res 2023;21(3):363-374. Published online June 16, 2023; DOI: https://doi.org/10.5217/ir.2023.00015

Abstract PDF Supplementary Material PubReader ePub

Background/Aims
Long-term immunosuppressive therapies used to treat inflammatory bowel disease (IBD) are associated with an increased risk of infections, many of which can be prevented by vaccination. We assessed physicians’ current approaches and clinical practices regarding vaccinations for IBD patients in different Asian countries/regions.
Methods
An internet-based survey was conducted among members of the Asian Organization for Crohn’s and Colitis from September 2020 to November 2020. The questionnaire consisted of 2 parts covering general opinion on the relevance of vaccinations and clinical practice of vaccination.
Results
Overall, 384 Asian medical doctors responded to the survey. The majority of respondents considered it very (57.6%) or sufficiently (39.6%) important to perform vaccinations as recommended by the guidelines. About half of the Asian physicians (52.6%) were usually or always performing vaccinations. The influenza vaccine was the most frequently recommended vaccine for IBD patients. Half of the respondents (51.3%) did not recommend hepatitis A vaccine, especially in China (61.6%) and Japan (93.6%). The diphtheria, tetanus, and pertussis vaccine were never (35.2%) or rarely (29.4%) recommended.
Conclusions
The findings of this survey indicated similarities among countries/regions in terms of the current approaches and practices regarding vaccination of IBD patients; however, there are some differences that might reflect each country’s domestic vaccination guidelines and health insurance particularly with certain vaccines in some countries/regions. Although Asian physicians largely recommend vaccination, more awareness among doctors and Asian consensus regarding differences in IBD vaccination among countries/regions may be required.

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Beyond the survey, to the ideal therapy for Asian
Ki Jae Jo, Jong Pil Im
Intestinal Research.2023; 21(3): 280. CrossRef
Crohn's disease and clinical management today: How it does?
Ronaldo Teixeira da Silva Júnior, Jonathan Santos Apolonio, Jessica Oliveira de Souza Nascimento, Bruna Teixeira da Costa, Luciano Hasimoto Malheiro, Marcel Silva Luz, Lorena Sousa de Carvalho, Cleiton da Silva Santos, Fabrício Freire de Melo
World Journal of Methodology.2023; 13(5): 399. CrossRef

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IBD

Infectious complications in patients with inflammatory bowel disease in Asia: the results of a multinational web-based survey in the 8th Asian Organization for Crohn’s and Colitis meeting: Yu Kyung Jun, Seong-Joon Koh, Dae Seong Myung, Sang Hyoung Park, Choon Jin Ooi, Ajit Sood, Jong Pil Im; Intest Res 2023;21(3):353-362. Published online July 27, 2023; DOI: https://doi.org/10.5217/ir.2023.00013

Abstract PDF Supplementary Material PubReader ePub

Background/Aims
Infectious complications are major concerns when treating patients with inflammatory bowel disease (IBD). This study evaluated clinical differences across countries/regions in the management of infectious diseases in patients with IBD.
Methods
A multinational online questionnaire survey was administered to participants at the 8th meeting of the Asian Organization for Crohn’s and Colitis. The questionnaire included questions regarding surveillance, diagnosis, management, and prevention of infection in patients with IBD.
Results
A total of 384 physicians responded to the questionnaire. The majority of Korean (n=70, 63.6%) and Chinese (n=51, 51.5%) physicians preferred vancomycin to metronidazole in the treatment of Clostridium difficile infection, whereas more than half of the Japanese physicians (n=62, 66.7%) preferred metronidazole. Physicians in Korea (n=88, 80.0%) and China (n=46, 46.5%) preferred a 3-month course of isoniazid and rifampin to treat latent tuberculosis infection, whereas most physicians in Japan (n=71, 76.3%) favored a 9-month course of isoniazid. Most Korean physicians (n=89, 80.9%) recommended hepatitis B virus (HBV) vaccination in patients lacking HBV surface antigen, whereas more than half of Japanese physicians (n=53, 57.0%) did not consider vaccination.
Conclusions
Differences in the diagnosis, prevention, and management of infections in patients with IBD across countries/regions reflect different prevalence rates of infectious diseases. This survey may broaden understanding of the real-world clinical settings across Asian countries/regions and provide information for establishing practical guidelines to manage patients with IBD.

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The Burden of Clostridioides difficile Infection in Korea
Seong Ran Jeon
Journal of Korean Medical Science.2024;[Epub] CrossRef
Perception of fecal microbiota transplantation in patients with ulcerative colitis in Korea: a KASID multicenter study
Jebyung Park, Sung Noh Hong, Hong Sub Lee, Jongbeom Shin, Eun Hye Oh, Kwangwoo Nam, Gyeol Seong, Hyun Gun Kim, Jin-Oh Kim, Seong Ran Jeon
The Korean Journal of Internal Medicine.2024; 39(5): 783. CrossRef
Diagnosis, management, and prevention of infectious complications in inflammatory bowel disease: variations among Asian countries
Ji Eun Baek, Sung Wook Hwang
Intestinal Research.2023; 21(3): 277. CrossRef

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IBD

Treatment of inflammatory bowel disease–Asian perspectives: the results of a multinational web-based survey in the 8th Asian Organization for Crohn’s and Colitis meeting: Eun Mi Song, Soo-Young Na, Sung Noh Hong, Siew Chien Ng, Tadakazu Hisamatsu, Byong Duk Ye; Intest Res 2023;21(3):339-352. Published online July 27, 2023; DOI: https://doi.org/10.5217/ir.2022.00135

Abstract PDF Supplementary Material PubReader ePub

Background/Aims
As the characteristics of inflammatory bowel disease (IBD) differ between Asians and Westerners, it is necessary to determine adequate therapeutic strategy for Asian IBD patients. We evaluated the current treatment of IBD in Asian countries/regions using a web-based survey.
Methods
The Korean Association for the Study of Intestinal Diseases conducted a multinational web-based survey for current IBD care in Asia between September 16, 2020, and November 13, 2020.
Results
A total of 384 doctors treating IBD patients from 24 Asian countries/regions responded to the survey. Anti-tumor necrosis factor (TNF) agents, anti-integrins, and anti-interleukin-12/23 agents were available for use by 93.8%, 72.1%, and 70.1% of respondents in Asian countries/regions. Compared with a previous survey performed in 2014, an increased tendency for treatment with biologics, including anti-TNF agents, was observed. In the treatment of corticosteroid-refractory acute severe ulcerative colitis, 72.1% of respondents chose anti-TNF agents, followed by tacrolimus (11.7%). In the treatment of corticosteroid-refractory Crohn’s disease, 90.4% chose anti-TNF agents, followed by thiopurines (53.1%), anti-interleukin-12/23 agents (39.3%), and anti-integrin agents (35.7%). In the treatment of Crohn’s disease patients refractory to anti-TNF agents, the most preferred strategy was to measure serum levels of anti-TNF and anti-drug antibodies (40.9%), followed by empiric dose escalation or shortening of dosing intervals (25.3%).
Conclusions
Although there were some differences, treatment strategies for patients with IBD were mostly similar among Asian doctors. Based on the therapeutic outcomes, it is necessary to identify the most appropriate therapeutic strategy for Asian IBD patients.

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Continuing or stopping 5‐aminosalicylates in patients with inflammatory bowel disease on anti‐TNF therapy: A nationwide population‐based study
Jeongkuk Seo, Seonok Kim, Seung Wook Hong, Sung Wook Hwang, Sang Hyoung Park, Dong‐Hoon Yang, Jeong‐Sik Byeon, Seung‐Jae Myung, Suk‐Kyun Yang, Ye‐Jee Kim, Byong Duk Ye
Alimentary Pharmacology & Therapeutics.2024; 60(3): 389. CrossRef
The Potential of Molecular Remission: Tissue Neutrophil Elastase Is Better Than Histological Activity for Predicting Long-Term Relapse in Patients With Ulcerative Colitis in Endoscopic Remission
Yu Kyung Jun, Hyeon Jeong Oh, Ji Ae Lee, Yonghoon Choi, Cheol Min Shin, Young Soo Park, Nayoung Kim, Dong Ho Lee, Hyuk Yoon
Inflammatory Bowel Diseases.2024;[Epub] CrossRef
How have treatment patterns for patients with inflammatory bowel disease changed in Asian countries?
Jihye Park
Intestinal Research.2023; 21(3): 275. CrossRef
Enrichment of Activated Fibroblasts as a Potential Biomarker for a Non-Durable Response to Anti-Tumor Necrosis Factor Therapy in Patients with Crohn’s Disease
Soo-Kyung Park, Gi-Young Lee, Sangsoo Kim, Chil-Woo Lee, Chang-Hwan Choi, Sang-Bum Kang, Tae-Oh Kim, Jaeyoung Chun, Jae-Myung Cha, Jong-Pil Im, Kwang-Sung Ahn, Seon-Young Kim, Min-Suk Kim, Chang-Kyun Lee, Dong-Il Park
International Journal of Molecular Sciences.2023; 24(19): 14799. CrossRef
Impact of age at diagnosis on long‐term prognosis in patients with intestinal Behçet's disease
Ji Young Chang, Soo Jung Park, Jae Jun Park, Tae Il Kim, Jae Hee Cheon, Jihye Park
Journal of Gastroenterology and Hepatology.2023;[Epub] CrossRef

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IBD

Diagnosis of inflammatory bowel disease–Asian perspectives: the results of a multinational web-based survey in the 8th Asian Organization for Crohn’s and Colitis meeting: Han Hee Lee, Jae Jun Park, Bo-In Lee, Ida Hilmi, Jose Sollano, Zhi Hua Ran; Intest Res 2023;21(3):328-338. Published online July 27, 2023; DOI: https://doi.org/10.5217/ir.2023.00012

Abstract PDF Supplementary Material PubReader ePub

Background/Aims
Inflammatory bowel disease (IBD) is no longer a rare disease in Asia, thus it needs to prepare recommendations relevant to Asian patients. This study aimed to identify disparities in the process of the diagnosis of IBD in Asian countries/regions.
Methods
In line with the 2020 Asian Organization for Crohn’s and Colitis annual meeting, a multinational web-based survey about Asian physicians’ perspectives on IBD was conducted.
Results
A total of 384 Asian physicians (99 in China, 93 in Japan, 110 in Korea, and 82 in other Asian countries/regions) treating IBD patients from 24 countries/regions responded to the survey. Most respondents were gastroenterologists working in an academic teaching hospital. About half of them had more than 10 years of clinical experience in caring for patients with IBD. The European Crohn’s Colitis Organisation guideline was used most commonly for the diagnosis of IBD except for Japanese physicians who preferred their own national guideline. The Mayo score and Crohn’s Disease Activity Index were the most commonly used activity scoring systems for ulcerative colitis and Crohn’s disease, respectively. Endoscopy, not surprisingly, was the main investigation in assessing the extent and activity of IBD. On the other hand, there were disparities across countries/regions with regard to the favored modalities of small bowel and perianal evaluation of Crohn’s disease, as well as the use of serologic markers.
Conclusions
Results of the present survey revealed practical behaviors of Asian physicians in the diagnosis of IBD. Investigating the reasons for different diagnostic approaches among countries/regions might help us develop Asian guidelines further.

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The intestinal ultrasound role in inflammatory bowel disease in clinical practice and a critical appraisal of the current guidelines (mini-review)
Sarah El-Nakeep
The Egyptian Journal of Internal Medicine.2024;[Epub] CrossRef

2,327 View
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1 Crossref

IBD

Risk of venous thromboembolism with a central venous catheter in hospitalized Japanese patients with inflammatory bowel disease: a propensity score-matched cohort study: Yasuhiro Aoki, Hiroki Kiyohara, Yohei Mikami, Kosaku Nanki, Takaaki Kawaguchi, Yusuke Yoshimatsu, Shinya Sugimoto, Tomohisa Sujino, Kaoru Takabayashi, Naoki Hosoe, Haruhiko Ogata, Yasushi Iwao, Takanori Kanai; Intest Res 2023;21(3):318-327. Published online February 10, 2023; DOI: https://doi.org/10.5217/ir.2022.00116

Abstract PDF Supplementary Material PubReader ePub

Background/Aims
Thromboprophylaxis is recommended for hospitalized patients with inflammatory bowel disease (IBD) in Western countries, although it is selectively administered to high-risk patients in East Asia. A central venous catheter (CVC) is commonly placed in patients with IBD. Although CVC placement is considered a risk factor for venous thromboembolism (VTE), the degree of increased risk in patients with IBD is uncertain. This study aimed to identify the risk of VTE with CVC placement in hospitalized Japanese patients with IBD without thromboprophylaxis.
Methods
This retrospective cohort study included patients with ulcerative colitis or Crohn’s disease who were admitted for disease flares at Keio University Hospital between January 2016 and December 2020. Patients who already had thrombosis or were administered any antithrombotic treatment on admission were excluded. VTE development during the hospitalization was surveyed, and VTE risk associated with CVC indwelling was estimated using propensity score matching and inverse probability of treatment weighting analyses.
Results
Altogether, 497 hospitalized patients with IBD (ulcerative colitis, 327; Crohn’s disease, 170) were enrolled. VTE developed in 9.30% (12/129) of catheterized patients and in 0.82% (3/368) of non-catheterized patients. The propensity score matching yielded 127 matched pairs of patients. The catheterized group demonstrated higher odds for VTE than the non-catheterized group (odds ratio, 13.15; 95% confidence interval, 1.68–102.70). A similar result was obtained in the inverse probability of treatment weighting analysis (odds ratio, 11.02; 95% confidence interval, 2.64–46.10).
Conclusions
CVC placement is a major risk factor for VTE among hospitalized Japanese patients with IBD without thromboprophylaxis.

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Safety and effectiveness of tofacitinib in Korean adult patients with ulcerative colitis: post-marketing surveillance study
Hyuk Yoon, Byong Duk Ye, Sang-Bum Kang, Kang-Moon Lee, Chang Hwan Choi, Joo-young Jo, Juwon Woo, Jae Hee Cheon
BMC Gastroenterology.2024;[Epub] CrossRef

2,994 View
301 Download
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IBD

Does caffeine have a double-edged sword role in inflammation and carcinogenesis in the colon?: Emiko Mizoguchi, Takayuki Sadanaga, Toshiyuki Okada, Takanori Minagawa, Jun Akiba; Intest Res 2023;21(3):306-317. Published online April 20, 2023; DOI: https://doi.org/10.5217/ir.2022.00118

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Caffeine (1,3,7-trimethylxanthine, also abbreviated to CAF) is a natural chemical with stimulant effects and is commonly included in many drinks and foods, including coffee, tea, cola, energy drinks, cocoa, chocolates, and so on. Our group previously reported that oral administration of CAF efficiently suppressed the development of intestinal inflammation in a dextran sulfate sodium (DSS)-induced murine acute colitis model by suppressing the expression of chitinase 3-like 1, one of the mammalian chitinases without enzymatic activity. Chitinases are hydrolytic enzymes that break down chitin, a polymer of N-acetylglucosamine, and chitinase-like proteins have no enzymatic activity with preserving chitin-binding ability. CAF binds a cleft of the chitinase active site and plays a role as a pan-chitinase inhibitor. Although CAF showed an anti-inflammatory effect in the above model, oral administration of low-dose CAF with 10% sucrose showed potentially neoplastic effects in colonic epithelial cells in a DSS-induced murine chronic colitis model. In this review, we would like to discuss the pros and cons of coffee/CAF in colonic inflammation and neoplasia with an example of pathological finding.

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Evaluation of the effect of roasting and digestion on biological activity of compounds of coffee extracts - in vitro assessment of the bioavailability, cytoprotective properties and modulation of inflammatory response
Joanna Grzelczyk, Grażyna Budryn, Dominik Szwajgier, Ewa Baranowska-Wójcik, Małgorzata Zakłos-Szyda
Food Chemistry.2024; 460: 140648. CrossRef
Recently Updated Role of Chitinase 3-like 1 on Various Cell Types as a Major Influencer of Chronic Inflammation
Emiko Mizoguchi, Takayuki Sadanaga, Linda Nanni, Siyuan Wang, Atsushi Mizoguchi
Cells.2024; 13(8): 678. CrossRef

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IBD

Animal models of inflammatory bowel disease: novel experiments for revealing pathogenesis of colitis, fibrosis, and colitis-associated colon cancer: Chan Hyung Lee, Seong-Joon Koh, Zaher A Radi, Aida Habtezion; Intest Res 2023;21(3):295-305. Published online May 31, 2023; DOI: https://doi.org/10.5217/ir.2023.00029

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Inflammatory bowel disease (IBD), comprising Crohn’s disease and ulcerative colitis, is a lifelong disease that manifests with chronic intestinal inflammation, sequential fibrosis, and an increased risk of colitis-associated colon cancer (CAC). The combined effects of genetic, immunological, environmental, and microbial factors render it difficult to determine the specific mechanism underlying the induction and perpetuation of IBD. Various animal models of IBD have contributed enormously to the understanding of IBD pathogenesis in terms of genomics, transcriptomics, proteomics, microbiome, and drug development of novel therapeutics. Although comprehensive research on IBD has been enabled by advanced technologies, such as genetically engineered models, there is a great need to develop relevant in vivo models of colitis and fibrosis. Here, we review 4 categories of animal models of acute and chronic intestinal inflammation, fibrosis, and CAC: chemically induced, genetically engineered, T cell transfer, and spontaneous gene mutation models.

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IBD

Artificial intelligence in inflammatory bowel disease: implications for clinical practice and future directions: Harris A. Ahmad, James E. East, Remo Panaccione, Simon Travis, James B. Canavan, Keith Usiskin, Michael F. Byrne; Intest Res 2023;21(3):283-294. Published online April 20, 2023; DOI: https://doi.org/10.5217/ir.2023.00020

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Inflammatory bowel disease encompasses Crohn’s disease and ulcerative colitis and is characterized by uncontrolled, relapsing, and remitting course of inflammation in the gastrointestinal tract. Artificial intelligence represents a new era within the field of gastroenterology, and the amount of research surrounding artificial intelligence in patients with inflammatory bowel disease is on the rise. As clinical trial outcomes and treatment targets evolve in inflammatory bowel disease, artificial intelligence may prove as a valuable tool for providing accurate, consistent, and reproducible evaluations of endoscopic appearance and histologic activity, thereby optimizing the diagnosis process and identifying disease severity. Furthermore, as the applications of artificial intelligence for inflammatory bowel disease continue to expand, they may present an ideal opportunity for improving disease management by predicting treatment response to biologic therapies and for refining the standard of care by setting the basis for future treatment personalization and cost reduction. The purpose of this review is to provide an overview of the unmet needs in the management of inflammatory bowel disease in clinical practice and how artificial intelligence tools can address these gaps to transform patient care.

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