1
|
Cicerone C, D’Amico F, Allocca M, Zilli A, Parigi TL, Danese S, Furfaro F. A Comprehensive Multidisciplinary Approach to Diagnosing Chronic Inflammatory Bowel Diseases: Integration of Clinical, Endoscopic, and Imaging Modalities. Diagnostics (Basel) 2024; 14:1530. [PMID: 39061667 PMCID: PMC11275644 DOI: 10.3390/diagnostics14141530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 07/12/2024] [Accepted: 07/13/2024] [Indexed: 07/28/2024] Open
Abstract
Chronic inflammatory bowel diseases, such as Crohn's disease and ulcerative colitis, present diagnostic challenges due to their complex and heterogeneous nature. While histology remains fundamental for accurate diagnosis, a multidisciplinary approach incorporating clinical, endoscopic, and imaging modalities is increasingly recognized as essential for comprehensive evaluation. This article delves into the importance of integrating various diagnostic techniques in the assessment of IBD. Colonoscopy and histology, with its ability to directly visualize the intestinal mucosa, play a central role in the diagnostic process. However, histological analysis alone may not suffice, necessitating the inclusion of advanced imaging techniques, such as magnetic resonance enterography (MRE), computed tomography enterography (CTE), and intestinal ultrasound (IUS). These techniques provide valuable insights into the disease's extent, severity, and complications, and should be used in conjunction with biochemical parameters. These modalities complement traditional endoscopic and histological findings, offering a more holistic understanding of the disease process. A multidisciplinary approach that incorporates clinical, endoscopic, histological, serological, and imaging assessments enables clinicians to achieve a more accurate and timely diagnosis of IBD. Moreover, this integrated approach facilitates personalized treatment strategies tailored to individual patient needs, ultimately improving clinical outcomes and quality of life for those affected by chronic inflammatory bowel diseases.
Collapse
Affiliation(s)
- Clelia Cicerone
- Department of Gastroenterology and Endoscopy, IRCCS San Raffaele Hospital, 20132 Milan, Italy; (C.C.); (F.D.); (M.A.); (A.Z.); (T.L.P.); (S.D.)
| | - Ferdinando D’Amico
- Department of Gastroenterology and Endoscopy, IRCCS San Raffaele Hospital, 20132 Milan, Italy; (C.C.); (F.D.); (M.A.); (A.Z.); (T.L.P.); (S.D.)
| | - Mariangela Allocca
- Department of Gastroenterology and Endoscopy, IRCCS San Raffaele Hospital, 20132 Milan, Italy; (C.C.); (F.D.); (M.A.); (A.Z.); (T.L.P.); (S.D.)
| | - Alessandra Zilli
- Department of Gastroenterology and Endoscopy, IRCCS San Raffaele Hospital, 20132 Milan, Italy; (C.C.); (F.D.); (M.A.); (A.Z.); (T.L.P.); (S.D.)
| | - Tommaso Lorenzo Parigi
- Department of Gastroenterology and Endoscopy, IRCCS San Raffaele Hospital, 20132 Milan, Italy; (C.C.); (F.D.); (M.A.); (A.Z.); (T.L.P.); (S.D.)
- Department of Gastroenterology and Endoscopy, Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Silvio Danese
- Department of Gastroenterology and Endoscopy, IRCCS San Raffaele Hospital, 20132 Milan, Italy; (C.C.); (F.D.); (M.A.); (A.Z.); (T.L.P.); (S.D.)
- Department of Gastroenterology and Endoscopy, Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Federica Furfaro
- Department of Gastroenterology and Endoscopy, IRCCS San Raffaele Hospital, 20132 Milan, Italy; (C.C.); (F.D.); (M.A.); (A.Z.); (T.L.P.); (S.D.)
| |
Collapse
|
2
|
van der Does de Willebois EML, Sari C, Mookhoek A, Joustra V, van Dieren S, D'Haens GR, Bemelman WA, Buskens CJ. The Clinical Relevance of an Inflamed Appendix in Crohn's Disease. J Crohns Colitis 2024; 18:812-817. [PMID: 38039348 PMCID: PMC11147793 DOI: 10.1093/ecco-jcc/jjad202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/22/2023] [Accepted: 11/30/2023] [Indexed: 12/03/2023]
Abstract
BACKGROUND AND AIMS An appendectomy for appendiceal inflammation has been suggested to ameliorate the clinical course of patients with ulcerative colitis [UC]. In contrast, for Crohn's disease [CD] an inverse association has been suggested with a higher incidence of CD and worse prognosis after appendectomy. The aim of this study was to analyse the clinical relevance of an inflamed appendix in CD patients undergoing ileocaecal resection [ICR]. METHODS All consecutive patients undergoing primary ICR between 2007 and 2018 were considered for inclusion. Microscopic data of available appendiceal resection specimens [n = 99] were revised by a dedicated inflammatory bowel disease [IBD] pathologist and scored as inflamed or not inflamed. Eighteen patients had a previous appendectomy. Pathological findings were correlated with disease characteristics and recurrence rates [clinical, endoscopic, and intervention-related]. RESULTS In total 117 patients were included, 77 [65.8%] females, with a median age of 30 years (interquartile range [IQR] 24-43), and a median follow up of 102 months [IQR 76-114]. Of patients without previous appendectomy [n = 99], 39% had an inflamed appendix. No significant differences in disease characteristics [eg, disease location, behaviour, time to surgery] or prognosis could be demonstrated between the two groups. In contrast, previous appendectomy [n = 18] was associated with penetrating disease and numerically shorter disease duration at the time of resection. Furthermore, a trend was seen towards a stronger association with postoperative recurrence. CONCLUSION The current study could not confirm a different prognosis for CD patients with and without an inflamed appendix. In contrast, in patients with a previous appendectomy, a trend was seen towards increased postoperative recurrence, which might be related to the higher incidence of penetrating disease.
Collapse
Affiliation(s)
| | - Cagla Sari
- Department of Surgery, Amsterdam University Medical Center, AMC, Amsterdam, The Netherlands
| | - Aart Mookhoek
- Institute of Tissue Medicine and Pathology, University of Bern, Bern, Switzerland
| | - Vincent Joustra
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Center, AMC, Amsterdam, The Netherlands
| | - Susan van Dieren
- Department of Surgery, Amsterdam University Medical Center, AMC, Amsterdam, The Netherlands
| | - Geert R D'Haens
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Center, AMC, Amsterdam, The Netherlands
| | - Willem A Bemelman
- Department of Surgery, Amsterdam University Medical Center, AMC, Amsterdam, The Netherlands
| | - Christianne J Buskens
- Department of Surgery, Amsterdam University Medical Center, AMC, Amsterdam, The Netherlands
| |
Collapse
|
3
|
Lin Z, Luo W, Zhang K, Dai S. Environmental and Microbial Factors in Inflammatory Bowel Disease Model Establishment: A Review Partly through Mendelian Randomization. Gut Liver 2024; 18:370-390. [PMID: 37814898 PMCID: PMC11096900 DOI: 10.5009/gnl230179] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/09/2023] [Accepted: 07/24/2023] [Indexed: 10/11/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a complex condition resulting from environmental, microbial, immunologic, and genetic factors. With the advancement of Mendelian randomization research in IBD, we have gained new insights into the relationship between these factors and IBD. Many animal models of IBD have been developed using different methods, but few studies have attempted to model IBD by combining environmental factors and microbial factors. In this review, we examine how environmental factors and microbial factors affect the development and progression of IBD, and how they interact with each other and with the intestinal microbiota. We also summarize the current methods for creating animal models of IBD and compare their advantages and disadvantages. Based on the latest findings from Mendelian randomization studies on the role of environmental factors in IBD, we discuss which environmental and microbial factors could be used to construct a more realistic and reliable IBD experimental model. We propose that animal models of IBD should consider both environmental and microbial factors to better mimic human IBD pathogenesis and to reveal the underlying mechanisms of IBD at the immune and genetic levels. We highlight the importance of environmental and microbial factors in IBD pathogenesis and offer new perspectives and suggestions for improving experimental animal modeling. Our goal is to create a model that closely resembles the clinical picture of IBD.
Collapse
Affiliation(s)
- Zesheng Lin
- The First Clinical Medical School, Southern Medical University, Guangzhou, China
| | - Wenjing Luo
- The Second Clinical Medical School, Southern Medical University, Guangzhou, China
| | - Kaijun Zhang
- Department of Gastroenterology, Guangdong Provincial Geriatrics Institute, Guangzhou, ChinaNational Key Clinical Specialty, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Shixue Dai
- Department of Gastroenterology, Guangdong Provincial Geriatrics Institute, Guangzhou, ChinaNational Key Clinical Specialty, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- Department of Gastroenterology, Geriatric Center, National Regional Medical Center, Ganzhou Hospital Affiliated to Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Ganzhou, China
| |
Collapse
|
4
|
Mark-Christensen A, Kristiansen EB, Laurberg S, Erichsen R. Prior Appendectomy Is Associated With a Milder Clinical Course in Crohn's Disease: A Nationwide Population-based Cohort Study. Inflamm Bowel Dis 2024:izae059. [PMID: 38564416 DOI: 10.1093/ibd/izae059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Indexed: 04/04/2024]
Abstract
BACKGROUND Appendectomy may affect the clinical course of Crohn's disease (CD), but rigorous evidence is sparse and contradicting. The aim of this study was to examine the association between appendectomy and the clinical course of CD. METHODS All patients diagnosed with CD in Denmark in the period from 1977 to 2017 were identified from the Danish National Patient Registry. Patients with appendectomy were matched with up to 10 comparators with CD and no appendectomy; and rates of CD-related hospital admissions were compared between CD patients with and without appendectomy using incidence rate ratios (IRRs). We used stratified Cox regression analysis to calculate adjusted hazard ratios (aHRs) of initiating treatment with biologics or undergoing intestinal resections. RESULTS In all, 21 189 CD patients (1936 with appendectomy and 19 253 without) were identified and followed for a median of 13.6 years. Crohn's disease patients who had undergone appendectomy experienced a lower rate of CD-related hospital admissions (appendectomy before CD: IRR = 0.83; 95% confidence interval [CI], 0.81-0.85; appendectomy after CD: IRR = 0.85; 95% CI, 0.81-0.88) compared with CD patients without appendectomy. For patients with appendectomy before CD diagnosis, the rate of initiating biologics was lower compared with CD patients with no appendectomy (aHR1-<5 years = 0.61; 95% CI, 0.46-0.81; aHR5-<10 years 0.47; 95% CI, 0.33-0.66; aHR10-20 years = 0.61; 95% CI, 0.47-0.79), as was the risk of undergoing colorectal resections (aHR1-<5 years = 0.94; 95% CI, 0.77-1.15; aHR5-<10 years 0.63; 95% CI, 0.47-0.85; aHR10-20 years = 0.75; 95% CI, 0.54-1.04). Rates of small bowel resections were comparable for CD patients with or without appendectomy prior to CD. Appendectomy performed after CD did not influence the rate of initiating treatment with biologics or undergoing intestinal resections. CONCLUSION The clinical course of CD is milder for those who have previously undergone appendectomy.
Collapse
Affiliation(s)
- Anders Mark-Christensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Århus, Denmark
- Department of Surgery, Odense University Hospital, Odense, Denmark
| | | | - Søren Laurberg
- Department of Surgery, Århus University Hospital, Århus, Denmark
| | - Rune Erichsen
- Department of Clinical Epidemiology, Aarhus University Hospital, Århus, Denmark
- Department of Surgery, Randers Regional Hospital, Randers, Denmark
| |
Collapse
|
5
|
Wetwittayakhlang P, Gonczi L, Golovics PA, Kurti Z, Pandur T, David G, Erdelyi Z, Szita I, Lakatos L, Lakatos PL. Time Trends of Environmental and Socioeconomic Risk Factors in Patients with Inflammatory Bowel Disease over 40 Years: A Population-Based Inception Cohort 1977-2020. J Clin Med 2023; 12:jcm12083026. [PMID: 37109362 PMCID: PMC10147007 DOI: 10.3390/jcm12083026] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/04/2023] [Accepted: 04/19/2023] [Indexed: 04/29/2023] Open
Abstract
BACKGROUND Data from population-based studies investigating trends in environmental factors associated with inflammatory bowel disease (IBD) is lacking. We aimed to assess long-term time trends of environmental and socioeconomic factors in IBD patients from a well-defined population-based cohort from Veszprem, Hungary. METHODS Patients were included between 1 January 1977, and 31 December 2020. Trends of environmental and socioeconomic factors were evaluated in three periods based on the decade of diagnosis, representing different therapeutic eras: cohort-A,1977-1995; cohort-B,1996-2008 (immunomodulator era); and cohort-C, 2009-2020 (biological era). RESULTS A total of 2240 incident patients with IBD were included (ulcerative colitis (UC) 61.2%, male 51.2%, median age at diagnosis: 35 years (IQR 29-49)). Rates of active smoking significantly decreased over time in Crohn's disease (CD): 60.2%, 49.9%, and 38.6% in cohorts A/B/C (p < 0.001). In UC, the rates were low and stable: 15.4%, 15.4%, and 14.5% in cohorts A/B/C (p = 0.981). Oral contraceptive use was more common in CD compared to UC (25.0% vs. 11.6%, p < 0.001). In UC, prevalence of appendectomy before diagnosis decreased over time: 6.4%, 5.5%, and 2.3% in cohorts A/B/C (p = 0.013). No significant changes were found in the socio-geographic characteristics of the IBD population (urban living: UC, 59.8%/64.8%/ 62.5% (p = 0.309) and CD, 62.5%/ 62.0%/ 59.0% (p = 0.636), in cohorts A/B/C). A greater percentage of patients had completed secondary school as the highest education level in later cohorts in both UC (42.9%/50.2%/51.6%, p < 0.001) and CD (49.2%/51.7%/59.5%, p = 0.002). A higher percentage of skilled workers (34.4%/36.2%/38.9%, p = 0.027) was found in UC, but not in CD (p = 0.454). CONCLUSION The association between trends of known environmental factors and IBD is complex. Smoking has become less prevalent in CD, but no other major changes occurred in socioeconomic factors over the last four decades that could explain the sharp increase in IBD incidence.
Collapse
Affiliation(s)
- Panu Wetwittayakhlang
- Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, QC H3G 1A4, Canada
- Gastroenterology and Hepatology Unit, Division of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai 90110, Thailand
| | - Lorant Gonczi
- Department of Internal Medicine and Oncology, Semmelweis University, 1083 Budapest, Hungary
| | - Petra A Golovics
- Department of Gastroenterology, Hungarian Defence Forces Medical Centre, 1062 Budapest, Hungary
| | - Zsuzsanna Kurti
- Department of Internal Medicine and Oncology, Semmelweis University, 1083 Budapest, Hungary
| | - Tunde Pandur
- Department of Gastroenterology, Grof Eszterhazy Hospital, 8500 Papa, Hungary
| | - Gyula David
- Department of Gastroenterology, Ferenc Csolnoky Hospital, 8200 Veszprem, Hungary
| | - Zsuzsanna Erdelyi
- Department of Gastroenterology, Ferenc Csolnoky Hospital, 8200 Veszprem, Hungary
| | - Istvan Szita
- Department of Gastroenterology, Ferenc Csolnoky Hospital, 8200 Veszprem, Hungary
| | - Laszlo Lakatos
- Department of Gastroenterology, Ferenc Csolnoky Hospital, 8200 Veszprem, Hungary
| | - Peter L Lakatos
- Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, QC H3G 1A4, Canada
- Department of Internal Medicine and Oncology, Semmelweis University, 1083 Budapest, Hungary
| |
Collapse
|
6
|
Durak MB, Simsek C, İnan B, Yuksel I. Ileocecal valve that cannot be intubated in Crohn's disease: is this a sign of poor prognosis? Int J Colorectal Dis 2023; 38:103. [PMID: 37072530 DOI: 10.1007/s00384-023-04401-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/06/2023] [Indexed: 04/20/2023]
Abstract
BACKGROUND In Crohn's disease (CD), the inability to intubate the ileocecal valve during colonoscopy may be associated with a poor disease prognosis. In this study, we aimed to compare the long-term outcomes of CD patients with and without ileocecal valve intubation during colonoscopy to assess its value as a prognostic parameter. METHODS This retrospective study involved CD patients with isolated ileal involvement who underwent colonoscopy between 1993 and 2022. We compared the basic characteristics and long-term clinical outcomes of two groups of patients: those with intubated and non-intubated ileocecal valves during colonoscopy. RESULTS Of the 155 participants, 97 (62.5%) patients' ileum could be intubated and 58 (37.5%) could not be intubated. The non-intubated group was younger at diagnosis (39 years versus 30.5 years, p = 0.002), but other baseline characteristics such as sex, smoking status, disease duration, perianal disease, and upper gastrointestinal involvements were similar. The non-intubated group had higher rates of steroid dependence (67.2% versus 46.4%; p = 0.012), biologic treatment (89.7% versus 58.8%; p < 0.001), CD-related hospitalization (81% versus 24.7%; p < 0.001), and major abdominal surgery (58.6% versus 15.5%; p < 0.001). In the logistic regression analysis, the positive predictors of successful ileum intubation were inflammatory type CD (OR: 14.821), high serum albumin level (OR: 5.919), and older age (OR: 1.069), while the negative predictors were stenosing (OR: 0.262) and penetrating (OR: 0.247) CD behavior. CONCLUSIONS In Crohn's disease patients with isolated ileal involvement, ileocecal valve cannot be intubated during colonoscopy may indicate the severity of the disease.
Collapse
Affiliation(s)
- Muhammed Bahaddin Durak
- Department of Gastroenterology, Ankara City Hospital, Bilkent Avenue, 06800, Cankaya, Ankara, Turkey.
| | - Cem Simsek
- Department of Gastroenterology, Health Sciences University, Mehmet, Akif Inan Training and Research Hospital, Sanliurfa, Turkey
- Graduate School of Health Sciences, Hacettepe University, Ankara, Turkey
| | - Bayram İnan
- Department of Gastroenterology, Ankara City Hospital, Bilkent Avenue, 06800, Cankaya, Ankara, Turkey
| | - Ilhami Yuksel
- Department of Gastroenterology, Ankara City Hospital, Bilkent Avenue, 06800, Cankaya, Ankara, Turkey
- Department of Gastroenterology, Ankara Yildirim Beyazit University School of Medicine, Ankara, Turkey
| |
Collapse
|
7
|
Zhang L, Hu C, Zhang Z, Liu R, Liu G, Xue D, Wang Z, Wu C, Wu X, She J, Shi F. Association between prior appendectomy and the risk and course of Crohn's disease: A systematic review and meta-analysis. Clin Res Hepatol Gastroenterol 2023; 47:102090. [PMID: 36746236 DOI: 10.1016/j.clinre.2023.102090] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 01/25/2023] [Accepted: 01/31/2023] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS The appendix has an important immune function in both health and disease, and appendectomy may influence microbial ecology and immune function. This meta-analysis aims to assess the association between appendectomy and the risk and course of Crohn's disease (CD). METHODS PubMed, EMBASE, and the Cochrane Library were used to identify all studies published until June 2022. Data from studies evaluating the association between appendectomy and CD were reviewed. RESULTS A total of 28 studies were included in the final analysis, comprising 22 case-control and 6 cohort studies. A positive relationship between prior appendectomy and the risk of developing CD was observed in both case-control studies (odds ratio [OR]: 1.59, 95% confidence interval [CI]: 1.22-2.08) and cohort studies (relative risk [RR]: 2.28, 95% CI: 1.66-3.14). The elevated risk of CD persisted 5 years post-appendectomy (RR = 1.24, 95% CI: 1.12-1.36). The risk of developing CD was similarly elevated regardless of the presence (RR = 1.64, 95% CI: 1.17-2.31) or absence (RR = 2.77, 95% CI: 1.84-4.16) of appendicitis in patients. Moreover, significant differences were found in the proportion of terminal ileum lesions (OR = 1.63; 95% CI: 1.38-1.93) and colon lesions (OR = 0.70; 95% CI: 0.5-0.84) between CD patients with appendectomy and those without appendectomy. CONCLUSIONS The risk of developing CD following an appendectomy is significant and persists 5 years postoperatively. Moreover, the elevated risk of CD may mainly occur in the terminal ileum.
Collapse
Affiliation(s)
- Lei Zhang
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Chenhao Hu
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Zhe Zhang
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Ruihan Liu
- Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Gaixia Liu
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Dong Xue
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Zhe Wang
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Chenxi Wu
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Xuefu Wu
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Junjun She
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
| | - Feiyu Shi
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
| |
Collapse
|
8
|
Saadh MJ, Pal RS, Arias-Gonzáles JL, Orosco Gavilán JC, JC D, Mohany M, Al-Rejaie SS, Bahrami A, Kadham MJ, Amin AH, Georgia H. A Mendelian Randomization Analysis Investigates Causal Associations between Inflammatory Bowel Diseases and Variable Risk Factors. Nutrients 2023; 15:1202. [PMID: 36904201 PMCID: PMC10005338 DOI: 10.3390/nu15051202] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 02/25/2023] [Accepted: 02/26/2023] [Indexed: 03/06/2023] Open
Abstract
The question of whether variable risk factors and various nutrients are causally related to inflammatory bowel diseases (IBDs) has remained unanswered so far. Thus, this study investigated whether genetically predicted risk factors and nutrients play a function in the occurrence of inflammatory bowel diseases, including ulcerative colitis (UC), non-infective colitis (NIC), and Crohn's disease (CD), using Mendelian randomization (MR) analysis. Utilizing the data of genome-wide association studies (GWASs) with 37 exposure factors, we ran Mendelian randomization analyses based on up to 458,109 participants. Univariable and multivariable MR analyses were conducted to determine causal risk factors for IBD diseases. Genetic predisposition to smoking and appendectomy as well as vegetable and fruit intake, breastfeeding, n-3 PUFAs, n-6 PUFAs, vitamin D, total cholesterol, whole-body fat mass, and physical activity were related to the risk of UC (p < 0.05). The effect of lifestyle behaviors on UC was attenuated after correcting for appendectomy. Genetically driven smoking, alcohol consumption, appendectomy, tonsillectomy, blood calcium, tea intake, autoimmune diseases, type 2 diabetes, cesarean delivery, vitamin D deficiency, and antibiotic exposure increased the risk of CD (p < 0.05), while vegetable and fruit intake, breastfeeding, physical activity, blood zinc, and n-3 PUFAs decreased the risk of CD (p < 0.05). Appendectomy, antibiotics, physical activity, blood zinc, n-3 PUFAs, and vegetable fruit intake remained significant predictors in multivariable MR (p < 0.05). Besides smoking, breastfeeding, alcoholic drinks, vegetable and fruit intake, vitamin D, appendectomy, and n-3 PUFAs were associated with NIC (p < 0.05). Smoking, alcoholic drinks, vegetable and fruit intake, vitamin D, appendectomy, and n-3 PUFAs remained significant predictors in multivariable MR (p < 0.05). Our results provide new and comprehensive evidence demonstrating that there are approving causal effects of various risk factors on IBDs. These findings also supply some suggestions for the treatment and prevention of these diseases.
Collapse
Affiliation(s)
- Mohamed J. Saadh
- Faculty of Pharmacy, Middle East University, Amman 11831, Jordan;
- Applied Science Research Center, Applied Science Private University, Amman 11152, Jordan
| | - Rashmi Saxena Pal
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara 144001, Punjab, India;
| | - José Luis Arias-Gonzáles
- Department of Social Sciences, Faculty of Social Studies, Pontifical University of Peru, San Miguel 15088, Peru;
| | | | - Darshan JC
- Department of Pharmacy Practice, Yenepoya Pharmacy College & Research Centre, Yenepoya Deemed to Be University, Mangalore 575018, Karnataka, India;
| | - Mohamed Mohany
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 55760, Riyadh 1145, Saudi Arabia; (M.M.); (S.S.A.-R.)
| | - Salim S. Al-Rejaie
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 55760, Riyadh 1145, Saudi Arabia; (M.M.); (S.S.A.-R.)
| | - Abolfazl Bahrami
- Biomedical Center for Systems Biology Science Munich, Ludwig Maximilians University, 80333 Munich, Germany
| | | | - Ali H. Amin
- Zoology Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt;
| | - Hrosti Georgia
- Institute of Immunology, Hannover Medical School, 30625 Hannover, Germany
| |
Collapse
|
9
|
Silber JH, Rosenbaum PR, Reiter JG, Hill AS, Jain S, Wolk DA, Small DS, Hashemi S, Niknam BA, Neuman MD, Fleisher LA, Eckenhoff R. Alzheimer's Dementia After Exposure to Anesthesia and Surgery in the Elderly: A Matched Natural Experiment Using Appendicitis. Ann Surg 2022; 276:e377-e385. [PMID: 33214467 PMCID: PMC8437105 DOI: 10.1097/sla.0000000000004632] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE The aim of this study was to determine whether surgery and anesthesia in the elderly may promote Alzheimer disease and related dementias (ADRD). BACKGROUND There is a substantial conflicting literature concerning the hypothesis that surgery and anesthesia promotes ADRD. Much of the literature is confounded by indications for surgery or has small sample size. This study examines elderly patients with appendicitis, a common condition that strikes mostly at random after controlling for some known associations. METHODS A matched natural experiment of patients undergoing appendectomy for appendicitis versus control patients without appendicitis using Medicare data from 2002 to 2017, examining 54,996 patients without previous diagnoses of ADRD, cognitive impairment, or neurological degeneration, who developed appendicitis between ages 68 through 77 years and underwent an appendectomy (the ''Appendectomy'' treated group), matching them 5:1 to 274,980 controls, examining the subsequent hazard for developing ADRD. RESULTS The hazard ratio (HR) for developing ADRD or death was lower in the Appendectomy group than controls: HR = 0.96 [95% confidence interval (CI) 0.94-0.98], P < 0.0001, (28.2% in Appendectomy vs 29.1% in controls, at 7.5 years). The HR for death was 0.97 (95% CI 0.95-0.99), P = 0.002, (22.7% vs 23.1% at 7.5 years). The HR for developing ADRD alone was 0.89 (95% CI 0.86-0.92), P < 0.0001, (7.6% in Appendectomy vs 8.6% in controls, at 7.5 years). No subgroup analyses found significantly elevated rates of ADRD in the Appendectomy group. CONCLUSION In this natural experiment involving 329,976 elderly patients, exposure to appendectomy surgery and anesthesia did not increase the subsequent rate of ADRD.
Collapse
Affiliation(s)
- Jeffrey H. Silber
- Center for Outcomes Research, Children’s Hospital of Philadelphia, Philadelphia, PA
- The Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA
- Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
- The Departments of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
- Department of Health Care Management, The Wharton School, University of Pennsylvania, Philadelphia, PA
| | - Paul R. Rosenbaum
- The Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA
- Department of Statistics, The Wharton School, University of Pennsylvania, Philadelphia, PA
| | - Joseph G. Reiter
- Center for Outcomes Research, Children’s Hospital of Philadelphia, Philadelphia, PA
| | - Alexander S. Hill
- Center for Outcomes Research, Children’s Hospital of Philadelphia, Philadelphia, PA
| | - Siddharth Jain
- Center for Outcomes Research, Children’s Hospital of Philadelphia, Philadelphia, PA
- The Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA
| | - David A. Wolk
- Department of Neurology, The Perelman School of Medicine, University of Pennsylvania
| | - Dylan S. Small
- The Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA
- Department of Statistics, The Wharton School, University of Pennsylvania, Philadelphia, PA
| | - Sean Hashemi
- Center for Outcomes Research, Children’s Hospital of Philadelphia, Philadelphia, PA
| | - Bijan A. Niknam
- Center for Outcomes Research, Children’s Hospital of Philadelphia, Philadelphia, PA
| | - Mark D. Neuman
- The Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA
- Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
- Center for Perioperative Outcomes Research and Transformation, University of Pennsylvania, Philadelphia, PA
| | - Lee A. Fleisher
- The Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA
- Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
- Center for Perioperative Outcomes Research and Transformation, University of Pennsylvania, Philadelphia, PA
| | - Roderic Eckenhoff
- Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| |
Collapse
|
10
|
Dipasquale V, Romano C. Genes vs environment in inflammatory bowel disease: an update. Expert Rev Clin Immunol 2022; 18:1005-1013. [PMID: 35912838 DOI: 10.1080/1744666x.2022.2108407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Inflammatory bowel diseases (IBDs) are known to be caused by a combination of genetic and environmental factors that vary in their influence on the development of the disease. Environmental exposures seem to influence IBD susceptibility, whereas genetic background is thought to modulate the impact of the environment on disease course and phenotype. AREAS COVERED A broad review of the involvement of genes and the environment in IBD pathogenesis was performed, and information regarding the main genetic and environmental factors - categorized into lifestyle factors, drugs, diet, and microbes - was updated. Monogenic very early onset IBD (VEO-IBD) was also discussed. EXPERT OPINION In the upcoming years, better understanding of gene-environment interactions will contribute to the possibility of a better prediction of disease course, response to therapy, and therapy-related adverse events with the final goal of personalized and more efficient patient management.
Collapse
Affiliation(s)
- Valeria Dipasquale
- Pediatric Gastroenterology and Cystic Fibrosis Unit, Department of Human Pathology in Adulthood and Childhood "G. Barresi", University of Messina, Messina, Italy
| | - Claudio Romano
- Pediatric Gastroenterology and Cystic Fibrosis Unit, Department of Human Pathology in Adulthood and Childhood "G. Barresi", University of Messina, Messina, Italy
| |
Collapse
|
11
|
Fantodji C, Jantchou P, Parent ME, Rousseau MC. Appendectomy and risk for inflammatory bowel disease: effect of age and time post appendectomy - a cohort study. BMJ Open Gastroenterol 2022; 9:bmjgast-2022-000925. [PMID: 35902208 PMCID: PMC9341190 DOI: 10.1136/bmjgast-2022-000925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 07/07/2022] [Indexed: 11/04/2022] Open
Abstract
Background and objective Appendectomy may modulate the risk of inflammatory bowel disease through an effect on the gut microbiota. This study investigated the associations between appendectomy and incidence of Crohn’s disease (CD) or ulcerative colitis (UC), with an emphasis on the influence of age and time post appendectomy. Methods This cohort study included 400 520 subjects born in Québec in 1970–1974 and followed until 2014. Administrative health data were used to ascertain appendectomy and cases of CD and UC. Cox proportional hazards models with time-dependent variables (appendectomy and time elapsed post appendectomy) allowed for the estimation of HRs and 95% CIs. Results A total of 2545 (0.6%) CD cases and 1134 (0.3%) UC cases were identified during follow-up. Appendectomy increased the risk of CD (HR=2.02; 95% CI: 1.66 to 2.44), especially when performed at 18–29 years of age. The risk of CD was increased in the first 2 years, and decreased significantly after ≥15 years post appendectomy. Appendectomy appeared to protect against UC (HR=0.39; 95% CI: 0.22 to 0.71). The risk of UC was not associated with age at appendectomy, but decreased with time elapsed post appendectomy (HR=0.21; 95% CI: 0.06 to 0.72, comparing ≥5 with 0–4 years after appendectomy). Conclusions The increased risk of CD related to appendectomy in young adults may result from detection bias, but physicians should have a low threshold for suspicion of CD in young symptomatic adults with a history of appendectomy. A strong protective effect of appendectomy against UC was observed after 5 years.
Collapse
Affiliation(s)
- Canisius Fantodji
- Epidemiology and Biostatistics Unit, Centre Armand-Frappier Santé Biotechnologie, Institut national de la recherche scientifique, Laval, Quebec, Canada.,Centre de recherche, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada
| | - Prévost Jantchou
- Centre de recherche, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada.,Department of Pediatric Gastroenterology, Hepatology, and Nutrition, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada
| | - Marie-Elise Parent
- Epidemiology and Biostatistics Unit, Centre Armand-Frappier Santé Biotechnologie, Institut national de la recherche scientifique, Laval, Quebec, Canada.,Department of Social and Preventive Medicine, School of Public Health, Université de Montréal, Montreal, Quebec, Canada
| | - Marie-Claude Rousseau
- Epidemiology and Biostatistics Unit, Centre Armand-Frappier Santé Biotechnologie, Institut national de la recherche scientifique, Laval, Quebec, Canada .,Department of Social and Preventive Medicine, School of Public Health, Université de Montréal, Montreal, Quebec, Canada
| |
Collapse
|
12
|
Environmental variables and genome-environment interactions predicting IBD diagnosis in large UK cohort. Sci Rep 2022; 12:10890. [PMID: 35764673 PMCID: PMC9240024 DOI: 10.1038/s41598-022-13222-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 05/23/2022] [Indexed: 11/29/2022] Open
Abstract
A combination of genetic susceptibility and environmental exposure is thought to cause inflammatory bowel disease (IBD), but the non-genetic component remains poorly characterized. We therefore undertook a search for environmental variables and gene-environment interactions associated with future IBD diagnosis in a large UK cohort. Using self-report and electronic health records, we identified 1946 Crohn's disease (CD) and 3715 ulcerative colitis (UC) patients after quality control in the UK Biobank. Based on prior literature and biological plausibility , we tested 38 candidate environmental variables for association with CD, UC, and overall IBD using Cox proportional hazard regressions. We also tested whether these variables interacted with polygenic risk in predicting disease, following up significant (FDR < 0.05) results with tests for SNP-environment associations. We performed robustness analyses on all significant results. As in previous reports, appendectomy protected against UC, smoking (both current and previous) elevated risk for CD, current smoking protected against UC, and previous smoking imparted a risk for UC. Childhood antibiotic use associated with IBD, as did sun exposure during the winter. Socioeconomic deprivation was conferred a risk for IBD, CD, and UC. We uncovered negative interactions between polygenic risk and previous oral contraceptive use for IBD and UC. Polygenic risk also interacted negatively with previous smoking in predicting UC. There were no individually significant SNP-environment interactions. Thus, for a limited set of environmental variables, there was strong evidence of association with IBD diagnosis in the UK Biobank, and interaction with polygenic risk was minimal.
Collapse
|
13
|
Zhao M, Feng R, Ben-Horin S, Zhuang X, Tian Z, Li X, Ma R, Mao R, Qiu Y, Chen M. Systematic review with meta-analysis: environmental and dietary differences of inflammatory bowel disease in Eastern and Western populations. Aliment Pharmacol Ther 2022; 55:266-276. [PMID: 34820868 DOI: 10.1111/apt.16703] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/16/2021] [Accepted: 11/03/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND While the incidence of inflammatory bowel disease (IBD) has stabilised in the West, it is still increasing in several newly industrialised countries. AIMS To investigate whether the environmental and dietary risk factors for IBD differ between Eastern and Western populations METHODS: We systematically searched PubMed, Embase, and Web of Science for studies published from inception through June 30, 2020. Data were pooled using a random effects model. RESULTS Overall, 255 studies were assessed. We identified 25 risk factors for IBD, seven of which were noted in both Eastern and Western populations: family history of Crohn's disease [CD] or ulcerative colitis [UC], former smoking (CD/UC), smoking (CD), appendicectomy (CD), tonsillectomy (CD), meat and meat products (CD), and vitamin D deficiency (UC). The remaining factors, including urban living, current smoking, antibiotics, oral contraceptives, caesarean section, isotretinoin, total energy, fat, cholesterol, fatty acids and their sub-classifications, eggs, and soft drinks, were associated with an increased risk of IBD in Western or Eastern populations only. We identified 21 protective factors for IBD, among which eight were common in the East and West: farm animals (CD/UC), Helicobacter pylori infection (CD/UC), multiple births (CD), physical activity (CD), history of breastfeeding (CD), pets (UC), current smoking (UC), and coffee intake (UC). Ten factors conferred protection against IBD in Western populations only, whereas eight factors conferred protection against IBD in Eastern populations only. CONCLUSIONS Numerous environmental and dietary factors influenced the development of IBD in both Western and Eastern populations, whereas certain factors influenced IBD risk differently in these populations.
Collapse
Affiliation(s)
- Min Zhao
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Rui Feng
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Shomron Ben-Horin
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
- Gastroenterology Department, Sheba Medical Center and Sackler School of Medicine, Tel-Aviv University, Tel Hashomer, Israel
| | - Xiaojun Zhuang
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Zhenyi Tian
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xiaozhi Li
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Ruiqi Ma
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Ren Mao
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yun Qiu
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Minhu Chen
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| |
Collapse
|
14
|
Lee S, Jang EJ, Jo J, Park SJ, Ryu HG. Long-term impacts of appendectomy associated with increased incidence of inflammatory bowel disease, infection, and colorectal cancer. Int J Colorectal Dis 2021; 36:1643-1652. [PMID: 33594506 DOI: 10.1007/s00384-021-03886-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/09/2021] [Indexed: 02/04/2023]
Abstract
PURPOSE Although the appendix has been suggested to play a role in maintaining the gut microbiome and immune system, the ramifications of appendectomy on the development inflammatory bowel disease, sepsis, and colorectal cancer are yet to be determined. The purpose of this study was to evaluate the potential long-term impacts of appendectomy, with a focus on inflammatory bowel disease, infection, and colorectal cancer, using the National Healthcare Insurance Service (NHIS) database of Korea. METHODS The National Healthcare Insurance Service database in Korea was used for analysis. Adult patients who received appendectomy between 2005 and 2013 were identified. The control group consisted of patients who did not receive appendectomy were matched by baseline characteristics including comorbidities and frequency of healthcare resource utilization. The primary outcome was the incidence-rate ratio (IRR) of Crohn's disease, ulcerative colitis, Clostridium difficile infection, sepsis, and colorectal cancer after appendectomy or the index date. RESULTS We identified 914,208 patients who underwent appendectomy, and after matching with control patients, a total of 486,844 patients were included for analysis. Patients who underwent appendectomy showed a significantly higher incidence of Crohn's disease (IRR 4.40, 95% confidence interval (CI) 3.78-5.13) and ulcerative colitis (IRR 1.78, 95% CI 1.63-1.93) compared to the control group during the 5-year follow-up period. The associations between appendectomy and Clostridium difficile infection, sepsis, and colorectal cancer were all found to be significant. CONCLUSION Patients who underwent appendectomy may be at increased risk for developing Crohn's disease, ulcerative colitis, Clostridium difficile infection, sepsis, and colorectal cancer.
Collapse
Affiliation(s)
- Seohee Lee
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, Republic of Korea, 03080
| | - Eun Jin Jang
- Department of Information Statistics, Andong National University, 1375 Gyeongdong-Ro, Andong, Gyeongsangbuk-do, 36729, South Korea
| | - Junwoo Jo
- Department of Statistics, Kyungpook National University, 80 Daehak-Ro, Daegu, 41566, South Korea
| | - So Jung Park
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, Republic of Korea, 03080
| | - Ho Geol Ryu
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, Republic of Korea, 03080.
| |
Collapse
|
15
|
Song MY, Ullah S, Yang HY, Ahmed MR, Saleh AA, Liu BR. Long-term effects of appendectomy in humans: is it the optimal management of appendicitis? Expert Rev Gastroenterol Hepatol 2021; 15:657-664. [PMID: 33350352 DOI: 10.1080/17474124.2021.1868298] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Appendectomy remains the gold standard for treating uncomplicated and complicated appendicitis. However, the vermiform appendix may play a significant role in the immune system (secondary immune function) and maintain a reservoir of the normal microbiome for the human body. The aim of this study was to summarize the long-term effects after appendectomy and discuss whether appendectomy is suitable for all appendicitis patients. AREAS COVERED A comprehensive and unbiased literature search was performed in PubMed. The terms 'appendix,' 'appendicitis,' 'appendectomy,' and 'endoscopic retrograde appendicitis therapy' were searched in the title and/or abstract. This review summarizes the long-term effects of appendectomy on some diseases in humans and describes three methods including appendectomy, medical treatment, and an 'organ-sparing' technique, named endoscopic retrograde appendicitis therapy (ERAT) to treat appendicitis. EXPERT OPINION Appendectomy remains the first-line therapy for appendicitis. The patient's problem is appendix, not appendicitis. If we treat appendicitis, the problem should be resolved. During COVID-19, an initial antibiotic treatment of mild appendicitis represents a promising strategy. For patients who are worried about the long-term adverse effect after appendectomy and have a strong desire to preserve the appendix and are aware of the risk of appendicitis recurrence, medical treatment, or ERAT could be proposed.
Collapse
Affiliation(s)
- Ming-Yang Song
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,The Academy of Medical Science, Zhengzhou University, Zhengzhou, China
| | - Saif Ullah
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hui-Yu Yang
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Md Robin Ahmed
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | | | - Bing-Rong Liu
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| |
Collapse
|
16
|
Truskett P. Thinking outside the box: not as easy as you might think. ANZ J Surg 2021; 90:1834-1835. [PMID: 33710729 DOI: 10.1111/ans.16135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 06/17/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Philip Truskett
- Department of Surgery, Prince of Wales Clinical School, Sydney, New South Wales, Australia
| |
Collapse
|
17
|
Babakhanov AT, Dzhumabekov AT, Zhao AV, Kuandykov YK, Tanabayeva SB, Fakhradiyev IR, Nazarenko Y, Saliev TM. Impact of Appendectomy on Gut Microbiota. Surg Infect (Larchmt) 2021; 22:651-661. [PMID: 33523761 DOI: 10.1089/sur.2020.422] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background: Considered vestigial from the classic point of view, the vermiform appendix has long been the subject of intensive studies. The recent understanding of appendix function in the context of unique architecture and bacterial complexity and density allows considering it as a safehouse for intestinal biodiversity. Methods: This review analyzes and assesses the current state of scientific knowledge regarding the role of the vermiform appendix in normal gut microbiota maintenance as a crucial factor of host homeostasis. It also highlights the difference in microbial composition between the large bowel and the appendix, as well as the association between the surgical excision, appendectomy, and dysbiosis-induced diseases. In addition, the review discusses the results of epidemiologic studies on appendectomy as a risk factor for the initiation of gastrointestinal carcinogenesis. It also highlights the association between appendectomy and a series of chronic inflammatory and neurologic disorders, including inflammatory bowel disease.
Collapse
Affiliation(s)
| | | | - Alexey V Zhao
- Institute of Surgery named after A.V. Vishnevsky, Moscow, Russia
| | - Yerlan K Kuandykov
- Khoja Akhmet Yassawi International Kazakh-Turkish University, Shymkent Medical Institute Postgraduate Studies Faculty, Shymkent, Kazakhstan
| | | | | | - Yana Nazarenko
- S.D. Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - Timur M Saliev
- S.D. Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| |
Collapse
|
18
|
van der Sloot KWJ, Weersma RK, Alizadeh BZ, Dijkstra G. Identification of Environmental Risk Factors Associated With the Development of Inflammatory Bowel Disease. J Crohns Colitis 2020; 14:1662-1671. [PMID: 32572465 DOI: 10.1093/ecco-jcc/jjaa114] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND AND AIMS Multiple genetic and environmental factors are involved in the aetiology of inflammatory bowel disease [IBD] including Crohn's disease [CD] and ulcerative colitis [UC], but data on these exposome factors are difficult to identify. Several exposome factors such as smoking have been shown to be involved; as for other environmental factors, eg stress, results have been conflicting. METHODS We performed a case-control study including 674 IBD patients of the 1000IBD cohort, frequency-matched based on sex and age with 1348 controls from the population-based Lifelines Cohort Study. Exposome data were obtained using the validated Groningen IBD Environmental Questionnaire [GIEQ], capturing exposome factors through different stages of life using 844 items, of which 454 were applicable to study the role of 93 exposome factors in disease aetiology. Logistic regression [LR] modelling with Bonferroni correction for multiple testing was applied to estimate the multivariable-adjusted effect of each exposome factor. RESULTS For IBD, we identified four novel factors: stressful life events (CD odds ratio [OR] 2.61/UC OR 2.92), high perceived stress [2.29/2.67], alcohol use [0.40/0.43], and bronchial hyper-reactivity [3.04/2.36]. Four novel factors were associated with only CD: prenatal smoke exposure [1.89], having a bed partner [0.53], allergies [2.66], and cow's milk hypersensitivity [5.87]; and two solely with UC: carpet flooring [0.57] and neuroticism [1.32]. Nine factors were replicated. CONCLUSIONS In this study we identified 10 novel, and replicated nine previously reported, exposome factors associated with IBD. Identifying these factors is important for both understanding disease aetiology and future prevention strategies to decrease the development of IBD in genetically susceptible persons.
Collapse
Affiliation(s)
- Kimberley W J van der Sloot
- Department of Gastroenterology and Hepatology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands.,Department of Epidemiology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Rinse K Weersma
- Department of Gastroenterology and Hepatology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Behrooz Z Alizadeh
- Department of Epidemiology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Gerard Dijkstra
- Department of Gastroenterology and Hepatology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| |
Collapse
|
19
|
Salgado VCL, Luiz RR, Boéchat NLF, Leão IS, Schorr BDC, Parente JML, Lima DC, Silveira Júnior ES, Silva GOS, Almeida NP, Vieira A, de Bueno MLQ, Chebli JM, Bertges ÉR, Brugnara LMDC, Junqueira Neto C, Campbell SBG, Discacciati LL, Cézar JPS, Nunes T, Kaplan GG, Zaltman C. Risk factors associated with inflammatory bowel disease: A multicenter case-control study in Brazil. World J Gastroenterol 2020; 26:3611-3624. [PMID: 32742130 PMCID: PMC7366056 DOI: 10.3748/wjg.v26.i25.3611] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The etiology of inflammatory bowel disease (IBD) is unknown, but it is believed to be multifactorial. The hygiene hypothesis proposes that better hygiene conditions would lead to less infectious disease during childhood and favor the development of immune-mediated diseases.
AIM To test the hygiene hypothesis in IBD by assessing the environmental risk factors associated with IBD development in different regions of Brazil with diverse socioeconomic development indices.
METHODS A multicenter case-control study was carried out with 548 Crohn’s disease (CD) and 492 ulcerative colitis (UC) outpatients and 416 healthy controls, from six IBD centers within different Brazilian states at diverse socioeconomic development stages. A semi-structured questionnaire with 87 socioeconomic and environmental questions was applied. Logistic regression model was created to assess the odds ratio (OR) with P value and 95% confidence intervals (CI).
RESULTS Predictive variables for both diseases (CD and UC) were women [odd ratios (OR) = 1.31; OR = 1.69], low monthly family income (OR = 1.78; OR = 1.57), lower number of cohabitants (OR = 1.70; OR = 1.60), absence of vaccination (OR = 3.11; OR = 2.51), previous history of bowel infections (OR = 1.78; OR = 1.49), and family history of IBD (OR = 5.26; OR = 3.33). Associated risk factors for CD were age (18-39 years) (OR = 1.73), higher educational level (OR = 2.22), absence of infectious childhood diseases (OR = 1.99). The UC predictive variables were living in an urban area (OR = 1.62), inadequate living conditions (OR = 1.48) and former smokers (OR = 3.36). Appendectomy was a risk factor for CD (OR = 1.58) with inverse association with UC (OR = 4.79). Consumption of treated and untreated water was associated with risk of CD (OR = 1.38) and UC (OR = 1.53), respectively.
CONCLUSION This is the first examining environmental exposures as risk factors for inflammatory bowel disease in Brazil. Most of the variables associated with disease risk support the role of the hygiene hypothesis in IBD development.
Collapse
Affiliation(s)
- Valéria Cristina Loureiro Salgado
- Division of Gastroenterology, Department of Internal Medicine, Clementino Fraga Filho Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21940-230, Brazil
| | - Ronir Raggio Luiz
- Institute for Studies in Public Health, Federal University of Rio de Janeiro, Rio de Janeiro 21940-230, Brazil
| | - Neio Lucio Fernandes Boéchat
- Multidisciplinary Research Laboratory, Clementino Fraga Filho Hospital, Institute of Thoracic Diseases, Faculty of Medicine, Federal University of Rio de Janeiro, Rio de Janeiro 21940-230, Brazil
| | - Isabella Sued Leão
- Division of Gastroenterology, Department of Internal Medicine, Clementino Fraga Filho Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21940-230, Brazil
| | - Bianca do Carmo Schorr
- Division of Gastroenterology, Department of Internal Medicine, Clementino Fraga Filho Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21940-230, Brazil
| | - José Miguel Luz Parente
- Division of Gastroenterology, Department of Internal Medicine, Hospital University, Faculty of Medicine, Federal University of Piauí, Piauí 64049-550, Brazil
| | - Daniela Calado Lima
- Division of Gastroenterology, Department of Internal Medicine, Hospital University, Faculty of Medicine, Federal University of Piauí, Piauí 64049-550, Brazil
| | - Eduardo Santos Silveira Júnior
- Division of Gastroenterology, Department of Internal Medicine, Hospital University, Faculty of Medicine, Federal University of Piauí, Piauí 64049-550, Brazil
| | - Genoile Oliveira Santana Silva
- Division of Gastroenterology, Inflammatory Bowel Disease Outpatient Clinic, Roberto Santos General Hospital (HGRS) of the Bahia State Department of Health, Bahia 40110-060, Brazil
| | - Neogélia Pereira Almeida
- Division of Gastroenterology, Inflammatory Bowel Disease Outpatient Clinic, Roberto Santos General Hospital (HGRS) of the Bahia State Department of Health, Bahia 40110-060, Brazil
| | - Andrea Vieira
- Division of Gastroenterology, Inflammatory Bowel Disease Outpatient Clinic, Irmandade Santa Casa da Misericórdia of São Paulo, São Paulo 01221020, Brazil
| | - Maria Luiza Queiroz de Bueno
- Division of Gastroenterology, Inflammatory Bowel Disease Outpatient Clinic, Irmandade Santa Casa da Misericórdia of São Paulo, São Paulo 01221020, Brazil
| | - Júlio Maria Chebli
- Division of Gastroenterology, Department of Internal Medicine, Hospital University, Faculty of Medicine, Federal University of Juiz de Fora, Minas Gerais 36036-247, Brazil
| | - Érika Ruback Bertges
- Division of Gastroenterology, Department of Internal Medicine, Hospital University, Faculty of Medicine, Federal University of Juiz de Fora, Minas Gerais 36036-247, Brazil
| | - Luísa Martins da Costa Brugnara
- Division of Gastroenterology, Department of Internal Medicine, Hospital University, Faculty of Medicine, Federal University of Juiz de Fora, Minas Gerais 36036-247, Brazil
| | - Columbano Junqueira Neto
- Division of Gastroenterology, Inflammatory Bowel Disease Outpatient Clinic, Federal District Base Hospital, Brasília 70330-150, Brazil
| | - Stefania Burjack Gabriel Campbell
- Division of Gastroenterology, Inflammatory Bowel Disease Outpatient Clinic, Federal District Base Hospital, Brasília 70330-150, Brazil
| | - Luana Letiza Discacciati
- Division of Gastroenterology, Inflammatory Bowel Disease Outpatient Clinic, Federal District Base Hospital, Brasília 70330-150, Brazil
| | - João Paulo Silva Cézar
- Division of Gastroenterology, Inflammatory Bowel Disease Outpatient Clinic, Federal District Base Hospital, Brasília 70330-150, Brazil
| | - Tiago Nunes
- Gastrointestinal Physiology, Institute of Nutritional Science, Nestle Research Center, Lausanne 1000, Switzerland
| | - Gilaad G Kaplan
- Departments of Medicine and Community Health Sciences, University of Calgary, Calgary T2N4Z6, Canada
| | - Cyrla Zaltman
- Division of Gastroenterology, Department of Internal Medicine, Clementino Fraga Filho Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21940-230, Brazil
| |
Collapse
|
20
|
Busch MA, Gröndahl B, Knoll RL, Pretsch L, Doganci A, Hoffmann I, Kullmer U, Bähner V, Zepp F, Meyer CU, Gehring S. Patterns of mucosal inflammation in pediatric inflammatory bowel disease: striking overexpression of IL-17A in children with ulcerative colitis. Pediatr Res 2020; 87:839-846. [PMID: 31261370 DOI: 10.1038/s41390-019-0486-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 06/13/2019] [Accepted: 06/18/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND Aberrant immune responses play a key role in the pathogenesis of inflammatory bowel disease (IBD). Most studies conducted to delineate the underlying molecular mechanisms focus on adults; an understanding of these mechanisms in children remains to be determined. Here, cytokines and transcription factors produced by immune cells within the intestinal mucosa of pediatric patients stricken with ulcerative colitis (UC) and Crohn's disease (CD) are characterized; potential diagnostic and therapeutic targets are identified. METHODS Fifty-two pediatric IBD and non-IBD patients were enrolled in the study. Specimens were taken during ileocolonoscopy. Expression of 16 genes that encode cytokines or transcription molecules was determined by quantitative polymerase chain reaction. Clinical data were collected via retrospective chart review. RESULTS Overexpression of interleukin-17A (IL-17A) was evident in children with UC compared to both non-IBD and CD patients. IL-22 was strongly increased in UC patients only. Typical proinflammatory and immunoregulatory cytokines were pronounced in IBD patients, although to a lower extent in the latter case. Clustered gene expression enabled differentiation between UC and non-IBD patients. CONCLUSION Our findings highlight the crucial involvement of IL-17A immunity in the early course of IBD, particularly UC, and the potential value of gene panels in diagnosing pediatric IBD.
Collapse
Affiliation(s)
- Meike A Busch
- Children's Hospital, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Britta Gröndahl
- Children's Hospital, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Rebecca L Knoll
- Children's Hospital, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Leah Pretsch
- Children's Hospital, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Aysefa Doganci
- Children's Hospital, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Isabell Hoffmann
- Institute of Medical Biostatistics, Epidemiology and Informatics, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Ulrike Kullmer
- Children's Hospital, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Viola Bähner
- Children's Hospital, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Fred Zepp
- Children's Hospital, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Claudius U Meyer
- Children's Hospital, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Stephan Gehring
- Children's Hospital, University Medical Center, Johannes Gutenberg-University, Mainz, Germany.
| |
Collapse
|
21
|
Mak WY, Zhao M, Ng SC, Burisch J. The epidemiology of inflammatory bowel disease: East meets west. J Gastroenterol Hepatol 2020; 35:380-389. [PMID: 31596960 DOI: 10.1111/jgh.14872] [Citation(s) in RCA: 326] [Impact Index Per Article: 81.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/09/2019] [Accepted: 09/12/2019] [Indexed: 12/13/2022]
Abstract
The incidence of inflammatory bowel diseases (IBD) in East has risen over the past decade to become a global disease. The increasing number of studies on the incidence and course of IBD in East has enabled us to explore East versus West differences in the epidemiology of IBD which could enhance our understanding of the heterogeneity of the disease and eventually assist in the discovery of novel therapeutic targets and design of preventive strategies. Comparison of population-based data in East and West reveals that the incidence of IBD has risen rapidly in East while plateauing in West. Furthermore, the clinical presentation and course of IBD differs between East and West with more patients in East presenting with complicated disease. Considering the scarcity of population-based data from East and the lack of studies with long durations of follow-up, it remains to be clarified whether these differences reflect true differences in disease presentation. The effects of genetic and environmental risk factors contributing to IBD also differ between Eastern and Western populations. Considering the differential effects of genetic and environmental risk factors in East and West, future studies should seek to discover novel genetic and environmental risk factors which might specifically apply to eastern populations. In this narrative review, we compare the epidemiology of IBD between eastern and western countries by summarizing evidence from population-based cohort studies in the last ten years. Furthermore, we look at differences in genetic susceptibility and environmental triggers of IBD between East and West.
Collapse
Affiliation(s)
- Wing Yan Mak
- Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Disease, LKS Institute of Health Science, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong
| | - Mirabella Zhao
- Gastrounit, Medical Division, Hvidovre University Hospital, Hvidovre, Denmark
| | - Siew Chien Ng
- Gastrounit, Medical Division, Hvidovre University Hospital, Hvidovre, Denmark
| | - Johan Burisch
- Gastrounit, Medical Division, Hvidovre University Hospital, Hvidovre, Denmark
| |
Collapse
|
22
|
|
23
|
Piovani D, Danese S, Peyrin-Biroulet L, Nikolopoulos GK, Lytras T, Bonovas S. Environmental Risk Factors for Inflammatory Bowel Diseases: An Umbrella Review of Meta-analyses. Gastroenterology 2019; 157:647-659.e4. [PMID: 31014995 DOI: 10.1053/j.gastro.2019.04.016] [Citation(s) in RCA: 385] [Impact Index Per Article: 77.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 04/15/2019] [Accepted: 04/15/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND & AIMS Multiple environmental factors have been associated with the development of inflammatory bowel diseases (IBDs). We performed an umbrella review of meta-analyses to summarize available epidemiologic evidence and assess its credibility. METHODS We systematically identified and appraised meta-analyses of observational studies examining environmental factors and risk of IBD (Crohn's disease [CD] or ulcerative colitis [UC]). For each meta-analysis, we considered the random effects estimate, its 95% confidence interval, the estimates of heterogeneity, and small-study effects, and we graded the evidence according to prespecified criteria. Methodologic quality was assessed with AMSTAR (ie, A Measurement Tool to Assess Systematic Reviews) 2. RESULTS We examined 183 estimates in 53 meta-analyses of 71 environmental factors related to lifestyles and hygiene, surgeries, drug exposures, diet, microorganisms, and vaccinations. We identified 9 factors that increase risk of IBD: smoking (CD), urban living (CD and IBD), appendectomy (CD), tonsillectomy (CD), antibiotic exposure (IBD), oral contraceptive use (IBD), consumption of soft drinks (UC), vitamin D deficiency (IBD), and non-Helicobacter pylori-like enterohepatic Helicobacter species (IBD). We identified 7 factors that reduce risk of IBD: physical activity (CD), breastfeeding (IBD), bed sharing (CD), tea consumption (UC), high levels of folate (IBD), high levels of vitamin D (CD), and H pylori infection (CD, UC, and IBD). Epidemiologic evidence for all of these associations was of high to moderate strength; we identified another 11 factors associated with increased risk and 16 factors associated with reduced risk with weak credibility. Methodologic quality varied considerably among meta-analyses. Several associations were based on findings from retrospective studies, so it is not possible to determine if these are effects of IBD or the results of recall bias. CONCLUSIONS In an umbrella review of meta-analyses, we found varying levels of evidence for associations of different environmental factors with risk of IBD. High-quality prospective studies with analyses of samples from patients with recent diagnoses of IBD are needed to determine whether these factors cause or are results of IBD and their pathogenic mechanisms.
Collapse
Affiliation(s)
- Daniele Piovani
- Department of Biomedical Sciences, Humanitas University, Milan, Italy; Inflammatory Bowel Disease Center, Humanitas Clinical and Research Center-IRCCS, Milan, Italy
| | - Silvio Danese
- Department of Biomedical Sciences, Humanitas University, Milan, Italy; Inflammatory Bowel Disease Center, Humanitas Clinical and Research Center-IRCCS, Milan, Italy
| | - Laurent Peyrin-Biroulet
- Department of Hepato-Gastroenterology and INSERM U954, University Hospital of Nancy, University of Lorraine, Vandoeuvre-lès-Nancy, France
| | | | - Theodore Lytras
- Hellenic Center for Disease Control and Prevention, Athens, Greece
| | - Stefanos Bonovas
- Department of Biomedical Sciences, Humanitas University, Milan, Italy; Inflammatory Bowel Disease Center, Humanitas Clinical and Research Center-IRCCS, Milan, Italy.
| |
Collapse
|
24
|
Prior Appendectomy and the Onset and Course of Crohn's Disease in Chinese Patients. Gastroenterol Res Pract 2019; 2019:8463926. [PMID: 31396275 PMCID: PMC6664542 DOI: 10.1155/2019/8463926] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 04/21/2019] [Accepted: 04/24/2019] [Indexed: 12/15/2022] Open
Abstract
Background and Aim The relationship between prior appendectomy and Crohn's disease (CD) has previously revealed conflicting findings. The present study investigates the relationship between prior appendectomy and CD development in Chinese patients. Methods A retrospective case-control study was performed to compare prior appendectomy rate between CD patients and age- and gender-matched controls at two Chinese hospitals. The clinical course of CD was determined in patients who underwent and did not undergo appendectomies before CD diagnosis. Results A total of 617 CD patients and 617 controls were included. The appendectomy rate before CD diagnosis in patients was higher, when compared to controls (6.65% versus 3.73%, P = 0.033). Appendectomy was a risk factor for the onset of CD independent of smoking in the multivariate analysis (OR: 1.878; 95% CI: 1.111–3.174; P = 0.019). Appendectomies were performed closer to the date of CD diagnosis in the trend test (P = 0.039). The rate of appendectomy within one year or 1-5 years before CD diagnosis was higher in patients when compared to that in controls (0.97% versus 0%, P = 0.031; 1.13% versus 0.32%, P = 0.180). However, the rate of appendectomy over five years before CD diagnosis was close to controls (4.54% versus 3.40%, P = 0.392). No significant differences in disease location, behavior, medication, and intestinal resection between appendectomy and nonappendectomy CD patients were found, even in the subgroup analysis by age of appendectomy. Conclusion Prior appendectomy is a risk factor for the onset of CD. However, the appendectomy rate only increased for a short duration before CD diagnosis, likely reflecting a diagnostic bias. Prior appendectomy did not influence the features or course of CD.
Collapse
|
25
|
Kim D, Taleban S. A Comprehensive Review of the Diagnosis and Pharmacological Management of Crohn's Disease in the Elderly Population. Drugs Aging 2019; 36:607-624. [PMID: 31055789 DOI: 10.1007/s40266-019-00672-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Crohn's disease (CD) in the elderly is rising in prevalence, which is related to an increase in its incidence and improving life expectancies. There are differences in the presentation, natural history, and treatment of CD between adult-onset patients who progress to older age and patients who are initially diagnosed at an older age. Presentation at an older age may also delay or make diagnosis challenging due to accumulating co-morbidities that mimic inflammatory bowel disease. Differences exist between adult- and older-onset disease, yet many guidelines do not specifically distinguish the management of these two distinct populations. Identifying patients at high risk for progression or aggressive disease is particularly important as elderly patients may respond differently to medical and surgical treatment, and may be at higher risk for adverse effects. Despite newer agents being approved for CD, the data regarding efficacy and safety in the elderly are currently limited. Balancing symptom management with risks of medical and surgical therapy is an ongoing challenge and requires special consideration in these two distinct populations.
Collapse
Affiliation(s)
- David Kim
- Division of Gastroenterology and Hepatology, Banner University Medical Center, Tucson, AZ, USA.,Division of Gastroenterology and Hepatology, University of Arizona School of Medicine, Tucson, AZ, USA
| | - Sasha Taleban
- Division of Gastroenterology and Hepatology, University of Arizona School of Medicine, Tucson, AZ, USA. .,Arizona Center on Aging, University of Arizona, Tucson, AZ, USA.
| |
Collapse
|
26
|
Forbes JD, Chen CY, Knox NC, Marrie RA, El-Gabalawy H, de Kievit T, Alfa M, Bernstein CN, Van Domselaar G. A comparative study of the gut microbiota in immune-mediated inflammatory diseases-does a common dysbiosis exist? MICROBIOME 2018; 6:221. [PMID: 30545401 PMCID: PMC6292067 DOI: 10.1186/s40168-018-0603-4] [Citation(s) in RCA: 256] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 11/25/2018] [Indexed: 05/12/2023]
Abstract
BACKGROUND Immune-mediated inflammatory disease (IMID) represents a substantial health concern. It is widely recognized that IMID patients are at a higher risk for developing secondary inflammation-related conditions. While an ambiguous etiology is common to all IMIDs, in recent years, considerable knowledge has emerged regarding the plausible role of the gut microbiome in IMIDs. This study used 16S rRNA gene amplicon sequencing to compare the gut microbiota of patients with Crohn's disease (CD; N = 20), ulcerative colitis (UC; N = 19), multiple sclerosis (MS; N = 19), and rheumatoid arthritis (RA; N = 21) versus healthy controls (HC; N = 23). Biological replicates were collected from participants within a 2-month interval. This study aimed to identify common (or unique) taxonomic biomarkers of IMIDs using both differential abundance testing and a machine learning approach. RESULTS Significant microbial community differences between cohorts were observed (pseudo F = 4.56; p = 0.01). Richness and diversity were significantly different between cohorts (pFDR < 0.001) and were lowest in CD while highest in HC. Abundances of Actinomyces, Eggerthella, Clostridium III, Faecalicoccus, and Streptococcus (pFDR < 0.001) were significantly higher in all disease cohorts relative to HC, whereas significantly lower abundances were observed for Gemmiger, Lachnospira, and Sporobacter (pFDR < 0.001). Several taxa were found to be differentially abundant in IMIDs versus HC including significantly higher abundances of Intestinibacter in CD, Bifidobacterium in UC, and unclassified Erysipelotrichaceae in MS and significantly lower abundances of Coprococcus in CD, Dialister in MS, and Roseburia in RA. A machine learning approach to classify disease versus HC was highest for CD (AUC = 0.93 and AUC = 0.95 for OTU and genus features, respectively) followed by MS, RA, and UC. Gemmiger and Faecalicoccus were identified as important features for classification of subjects to CD and HC. In general, features identified by differential abundance testing were consistent with machine learning feature importance. CONCLUSIONS This study identified several gut microbial taxa with differential abundance patterns common to IMIDs. We also found differentially abundant taxa between IMIDs. These taxa may serve as biomarkers for the detection and diagnosis of IMIDs and suggest there may be a common component to IMID etiology.
Collapse
Affiliation(s)
- Jessica D. Forbes
- Department of Internal Medicine, University of Manitoba, Winnipeg, MB Canada
- University of Manitoba IBD Clinical and Research Centre, Winnipeg, MB Canada
- National Microbiology Laboratory, Public Health Agency of Canada, 1015 Arlington Street, Winnipeg, MB R3E 3R2 Canada
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
| | - Chih-yu Chen
- National Microbiology Laboratory, Public Health Agency of Canada, 1015 Arlington Street, Winnipeg, MB R3E 3R2 Canada
| | - Natalie C. Knox
- National Microbiology Laboratory, Public Health Agency of Canada, 1015 Arlington Street, Winnipeg, MB R3E 3R2 Canada
| | - Ruth-Ann Marrie
- Department of Internal Medicine, University of Manitoba, Winnipeg, MB Canada
- Department of Community Health Sciences, University of Manitoba, Winnipeg, MB Canada
| | - Hani El-Gabalawy
- Department of Internal Medicine, University of Manitoba, Winnipeg, MB Canada
- Arthritis Centre, University of Manitoba, Winnipeg, MB Canada
| | - Teresa de Kievit
- Department of Microbiology, University of Manitoba, Winnipeg, MB Canada
| | - Michelle Alfa
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB Canada
| | - Charles N. Bernstein
- Department of Internal Medicine, University of Manitoba, Winnipeg, MB Canada
- University of Manitoba IBD Clinical and Research Centre, Winnipeg, MB Canada
| | - Gary Van Domselaar
- University of Manitoba IBD Clinical and Research Centre, Winnipeg, MB Canada
- National Microbiology Laboratory, Public Health Agency of Canada, 1015 Arlington Street, Winnipeg, MB R3E 3R2 Canada
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB Canada
| |
Collapse
|
27
|
Effects of Appendectomy on the Onset and Course of Ulcerative Colitis in Chinese Patients. Gastroenterol Res Pract 2018; 2018:2927891. [PMID: 30524476 PMCID: PMC6247428 DOI: 10.1155/2018/2927891] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 10/09/2018] [Accepted: 10/15/2018] [Indexed: 12/15/2022] Open
Abstract
Background Previous epidemiological studies have suggested that appendectomy may be a protective factor against the development of ulcerative colitis (UC). However, the results of these studies were inconsistent, with rare studies in Chinese populations. Aim This study examined the associations between appendectomy performed before UC diagnosis and the occurrence and clinical course of UC in Chinese patients. Methods A case control study was conducted to compare the rate of appendectomy between UC patients and controls matched for age and sex at two Chinese hospitals. Clinical course of UC was compared between UC patients who underwent appendectomies before UC diagnosis and who did not. Results 402 UC patients and 402 controls were included. The percentage of appendectomy performed before UC diagnosis in UC patients did not differ significantly from controls (2.74% vs 3.98%, P = 0.442). Subgroup analysis on the basis of localization of UC patients did not find significant difference from controls. The extent of disease involvement in UC patients who underwent appendectomy was smaller than patients who did not (P = 0.009). Appendectomy was found to be significantly related to the location of the disease independent of smoking status in multivariate analysis (P < 0.001). Appendectomy did not influence severity of disease and need for immunosuppressive treatment or colectomy. Conclusion We did not find a significant negative association between appendectomy and the UC occurrence in Chinese patients. Appendectomy performed before UC diagnosis may reduce the extent of UC involvement.
Collapse
|
28
|
Rasmussen T, Fonnes S, Rosenberg J. Long-Term Complications of Appendectomy: A Systematic Review. Scand J Surg 2018; 107:189-196. [PMID: 29764306 DOI: 10.1177/1457496918772379] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Appendectomy is a common surgical procedure, but no overview of the long-term consequences exists. Our aim was to systematically review the long-term complications of appendectomy for acute appendicitis. MATERIALS AND METHODS This systematic review was reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. A protocol was registered on PROSPERO (CRD42017064662). The databases PubMed and EMBASE were searched for original reports on appendectomy with n ≥ 500 and follow-up >30 days. The surgical outcomes were ileus and incisional hernia; other outcomes were inflammatory bowel disease, cancer, fertility, and mortality. RESULTS We included 37 studies. The pooled estimate of the ileus prevalence was 1.0% over a follow-up period of 4.6 (range, 0.5-15) years. Regarding incisional hernia, we found a pooled estimate of 0.7% prevalence within a follow-up period of 6.5 (range, 1.9-10) years. Ulcerative colitis had a pooled estimate of 0.15% prevalence in the appendectomy group and 0.19% in controls. The opposite pattern was found regarding Crohn's disease with a pooled estimate of 0.20% prevalence in the appendectomy group and 0.12% in controls. No clear pattern was found regarding most of the examined cancers in appendectomy groups compared with background populations. Pregnancy rates increased after appendicitis compared with controls in most studies. Mortality was low after appendectomy. CONCLUSION Appendectomy had a low prevalence of long-term surgical complications. We did not find any significant other long-term complications, though the prevalence of Crohn's disease was higher and the prevalence of ulcerative colitis was lower after appendectomy than in controls. Appendectomy did not impair fertility.
Collapse
Affiliation(s)
- T Rasmussen
- Centre for Perioperative Optimization (CPO), Department of Surgery, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - S Fonnes
- Centre for Perioperative Optimization (CPO), Department of Surgery, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - J Rosenberg
- Centre for Perioperative Optimization (CPO), Department of Surgery, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| |
Collapse
|
29
|
Hall NJ, Eaton S. Non-operative management of appendicitis in children. Arch Dis Child 2018; 103:498-502. [PMID: 29066523 DOI: 10.1136/archdischild-2017-313267] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 09/26/2017] [Accepted: 09/27/2017] [Indexed: 12/16/2022]
Abstract
While appendicectomy has been considered the mainstay of treatment for children with acute appendicitis for many decades, there has been a great deal of recent interest in non-operative treatment (NOT) with antibiotics alone. Initial results suggest that many children with appendicitis can indeed be safely treated with NOT and can be spared the surgeon's knife. Many as yet unanswered questions remain, however, before NOT can be considered a realistic and reliable alternative to surgery. This review summaries current knowledge and understanding of the role of NOT in children with appendicitis and outlines and discusses the outstanding knowledge gaps.
Collapse
Affiliation(s)
- Nigel J Hall
- Department of Paediatric Surgery and Urology, Southampton Children's Hospital, Southampton, UK.,University Surgery Unit, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Simon Eaton
- Developmental Biology and Cancer Programme, UCL Great Ormond Street Institute of Child Health, London, UK
| |
Collapse
|
30
|
Risk factors for inflammatory bowel disease: A prospective multi-center study. Indian J Gastroenterol 2018; 37:189-195. [PMID: 29987750 DOI: 10.1007/s12664-018-0850-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 05/06/2018] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Environmental risk factors have been associated with inflammatory bowel disease (IBD). With rising incidence, it is important to know risk factors associated with IBD in our population. This study was aimed to evaluate risk factors for IBD from western India. METHODS This was prospective, multi-center case-control study which included 1054 patients with IBD of which 765 (72.5%) were ulcerative colitis (UC) and 289 (27.4%) Crohn's disease (CD). Asymptomatic individuals without a history of any major illness served as controls. The questionnaire containing risk factors for IBD was given to patients and control group. Odds ratio and 95% confidence interval were calculated for each variable. RESULT Significant numbers of patients with CD were from rural area. Rural environment (OR 1.071, 0.82-1.38 and OR 1.441, 1.02-2.02), higher education (OR 1.830, 1.52-2.19 and OR 1.519, 1.16-1.97), professional by occupation (OR 1.754, 1.46-2.09 and OR 1.293, 0.99-1.67), annual family income >100,000 Indian national rupees (OR 2.185, 1.52-3.13 and OR 4.648, 3.10-6.95), history of appendectomy (OR 3.158, 1.71-5.80 and OR 3.158, 1.71-5.80), and family history of IBD (OR 4.510, 2.19-9.25 and OR 3.972, 1.58-9.96) were the risk factors for UC and CD, respectively. Vegetarian diet was protective factor for UC (OR 0.29, 0.27-0.39) and risk for CD (OR 1.179, 0.88-1.57). Smoking and chronic alcoholism were not found to be the risk factors. CONCLUSION This study highlights association between socioeconomic, dietary factors, appendectomy, and family history as risk factors for IBD.
Collapse
|
31
|
Girard-Madoux MJ, Gomez de Agüero M, Ganal-Vonarburg SC, Mooser C, Belz GT, Macpherson AJ, Vivier E. The immunological functions of the Appendix: An example of redundancy? Semin Immunol 2018; 36:31-44. [DOI: 10.1016/j.smim.2018.02.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 02/16/2018] [Indexed: 12/12/2022]
|
32
|
Matsuoka K, Kobayashi T, Ueno F, Matsui T, Hirai F, Inoue N, Kato J, Kobayashi K, Kobayashi K, Koganei K, Kunisaki R, Motoya S, Nagahori M, Nakase H, Omata F, Saruta M, Watanabe T, Tanaka T, Kanai T, Noguchi Y, Takahashi KI, Watanabe K, Hibi T, Suzuki Y, Watanabe M, Sugano K, Shimosegawa T. Evidence-based clinical practice guidelines for inflammatory bowel disease. J Gastroenterol 2018; 53:305-353. [PMID: 29429045 PMCID: PMC5847182 DOI: 10.1007/s00535-018-1439-1] [Citation(s) in RCA: 330] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 01/23/2018] [Indexed: 02/07/2023]
Abstract
Inflammatory bowel disease (IBD) is a chronic disorder involving mainly the intestinal tract, but possibly other gastrointestinal and extraintestinal organs. Although etiology is still uncertain, recent knowledge in pathogenesis has accumulated, and novel diagnostic and therapeutic modalities have become available for clinical use. Therefore, the previous guidelines were urged to be updated. In 2016, the Japanese Society of Gastroenterology revised the previous versions of evidence-based clinical practice guidelines for ulcerative colitis (UC) and Crohn's disease (CD) in Japanese. A total of 59 clinical questions for 9 categories (1. clinical features of IBD; 2. diagnosis; 3. general consideration in treatment; 4. therapeutic interventions for IBD; 5. treatment of UC; 6. treatment of CD; 7. extraintestinal complications; 8. cancer surveillance; 9. IBD in special situation) were selected, and a literature search was performed for the clinical questions with use of the MEDLINE, Cochrane, and Igaku Chuo Zasshi databases. The guidelines were developed with the basic concept of the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system. Recommendations were made using Delphi rounds. This English version was produced and edited based on the existing updated guidelines in Japanese.
Collapse
Affiliation(s)
- Katsuyoshi Matsuoka
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Taku Kobayashi
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Fumiaki Ueno
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan.
- Ofuna Central Hospital, 6-2-24 Ofuna, Kamakura-shi, Kanagawa, 247-0056, Japan.
| | - Toshiyuki Matsui
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Fumihito Hirai
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Nagamu Inoue
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Jun Kato
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Kenji Kobayashi
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Kiyonori Kobayashi
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Kazutaka Koganei
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Reiko Kunisaki
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Satoshi Motoya
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Masakazu Nagahori
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Hiroshi Nakase
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Fumio Omata
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Masayuki Saruta
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Toshiaki Watanabe
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Toshiaki Tanaka
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Takanori Kanai
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Yoshinori Noguchi
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Ken-Ichi Takahashi
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Kenji Watanabe
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Toshifumi Hibi
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Yasuo Suzuki
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Mamoru Watanabe
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Kentaro Sugano
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| | - Tooru Shimosegawa
- Guidelines Committee for Creating and Evaluating the ''Evidence-Based Clinical Practice Guidelines for Inflammatory Bowel Disease in Japan'', The Japanese Society of Gastroenterology (JSGE), 6F Shimbashi i-MARK Building, 2-6-2 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan
| |
Collapse
|
33
|
Fawkner-Corbett D, Simmons A, Parikh K. Microbiome, pattern recognition receptor function in health and inflammation. Best Pract Res Clin Gastroenterol 2017; 31:683-691. [PMID: 29566912 DOI: 10.1016/j.bpg.2017.11.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 11/05/2017] [Indexed: 01/31/2023]
Abstract
The innate immune system plays an important role in shaping the microbiota into configurations that are tolerated and beneficial to the host, thereby playing a crucial role in human health. Innate immunity is based on the fundamental principle that Pattern Recognition Receptors (PRRs) recognise pathogen associated molecular patterns as non-self-entities and trigger intracellular signalling pathways that lead to the induction of numerous cytokines and chemokines that help maintain host resistance to infections. Dysregulation of this interaction has been identified as the core defect that leads to chronic intestinal inflammation allowing certain microbiota to be harmful to host health. This dysbiosis of the microbiome is found associated with numerous chronic diseases. A logical explanation would be that genetic defects in the recognition and response pathways that the host uses to identify these microbial pathogens could lead to altered microbial colonisation or mis-recognition of normal bacteria leading to diseases. The interaction between pattern recognition receptors, microbial traits and human health with respect to the gut are now rapidly resolved and will be the subject of this review.
Collapse
Affiliation(s)
- David Fawkner-Corbett
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK; Translational Gastroenterology Unit, Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, UK; Academic Paediatric Surgery Unit (APSU), Nuffield Department of Surgical Sciences, University of Oxford, UK
| | - Alison Simmons
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK; Translational Gastroenterology Unit, Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, UK
| | - Kaushal Parikh
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK; Translational Gastroenterology Unit, Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, UK.
| |
Collapse
|
34
|
Deng P, Wu J. Meta-analysis of the association between appendiceal orifice inflammation and appendectomy and ulcerative colitis. REVISTA ESPANOLA DE ENFERMEDADES DIGESTIVAS 2017; 108:401-10. [PMID: 27338627 DOI: 10.17235/reed.2016.4176/2015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE This study aimed to investigate the relationship between appendiceal orifice inflammation (AOI) and appendectomy and ulcerative colitis (UC) by a meta-analysis. METHODS Databases were thoroughly searched for studies on AOI and UC up to January 2016. Three comparisons were performed: a) whether the previous appendectomy was a risk factor of UC; b) influence of appendectomy on UC courses; c) influence of AOI on UC severity. Odds ratios (ORs) and 95% confidence intervals (CIs) were the effects sizes. The merging of results and publication bias assessment were performed by using RevMan 5.3. Sensitivity analysis was conducted using Stata 12.0. RESULTS Nineteen studies were selected in the present study. Results of comparison I showed that appendectomy was a protective factor of UC (OR = 0.44; 95% CI [0.30, 0.64]). Comparison II indicated appendectomy had no significant influence in the courses of UC (proctitis: OR = 1.03, 95% CI [0.74, 1.42]; left-sided colitis: OR = 1.01, 95% CI [0.73, 1.39]; pancolitis: OR = 0.92, 95% CI [0.59, 1.43]; colectomy: OR = 1.38, 95% CI [0.62, 3.04]). Comparison III indicated UC combined with AOI did not affect the courses of UC (proctitis: OR = 1.15, 95% CI [0.67, 1.98]; left-sided colitis: OR = 1.14, 95% CI [0.24, 5.42]; colectomy: OR = 0.36, 95% CI [0.10, 1.23]). Sensitivity analysis confirmed the robust of the results in the present study. CONCLUSION In conclusion, this meta-analysis indicated appendectomy can reduce the risk of UC. But appendectomy or AOI had no influence on the severity of the disease and the effect of surgical treatment.
Collapse
Affiliation(s)
- Peng Deng
- The Emergency Department, West China Hospital
| | - Junchao Wu
- Department of Digestive Internal Medicine, West China Hospital, China
| |
Collapse
|
35
|
Davidson JR, Eaton S, De Coppi P. Let sleeping dogs lie: To leave the appendix at the time of a Ladd procedure. J Pediatr Surg 2017; 53:S0022-3468(17)30570-5. [PMID: 28943135 DOI: 10.1016/j.jpedsurg.2017.09.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 09/02/2017] [Indexed: 11/15/2022]
Affiliation(s)
- Joseph R Davidson
- Stem Cells & Regenerative Medicine, DBC, Great Ormond Street Institute of Child Health, University College London
| | - Simon Eaton
- Stem Cells & Regenerative Medicine, DBC, Great Ormond Street Institute of Child Health, University College London
| | - Paolo De Coppi
- Stem Cells & Regenerative Medicine, DBC, Great Ormond Street Institute of Child Health, University College London.
| |
Collapse
|
36
|
Abstract
Inflammatory bowel diseases consisting of Crohn's disease and ulcerative colitis are chronic inflammatory diseases of the gastrointestinal tract. In addition to genetic susceptibility and disturbances of the microbiome, environmental exposures forming the exposome play an important role. Starting at birth, the cumulative effect of different environmental exposures combined with a predetermined genetic susceptibility is thought to cause inflammatory bowel disease. All these environmental factors are part of a Western lifestyle, suiting the high incidence rates in Europe and the United States. Whereas receiving breastfeeding, evidence of a Helicobacter pylori infection and vitamin D are important protective factors in Crohn's disease as well as ulcerative colitis, increased hygiene, experiencing a bacterial gastroenteritis in the past, urban living surroundings, air pollution, the use of antibiotics, nonsteroidal anti-inflammatory drugs, and oral contraceptives are likely to be the most important risk factors for both diseases. Current cigarette smoking yields a divergent effect by protecting against ulcerative colitis but increasing risk of Crohn's disease, whereas former smoking increases chances of both diseases. This review gives a clear overview of the current state of knowledge concerning the exposome. Future studies should focus on measuring this exposome yielding the possibility of combining all involved factors to one exposome risk score and our knowledge on genetic susceptibility.
Collapse
|
37
|
Abstract
The term inflammatory bowel disease (IBD) refers principally to two major categories of chronic relapsing inflammatory intestinal disorders: Crohn's disease (CD) and ulcerative colitis (UC). In the United States, it is currently estimated that about 1.5 million people suffer from IBD, causing considerable suffering, mortality and economic loss every year. Yet the cause of IBD is unknown, and until we understand more, prevention or cure will not be possible. There is a lot of variation in the incidence and prevalence of CD based on geographic region, environment, immigrant population, and ethnic groups. The annual incidence of CD in North America is reported to be 3.1-20.2 per 100,000 with a prevalence of 201 per 100,000 population. Based on the epidemiological, genetic and immunological data, CD is considered to be a heterogeneous disorder with multifactorial etiology in which genetics and environment interact to manifest the disease. Several genes have been studied so for with respect to CD, but thus far the strong and replicated associations have been identified with NOD2, IL23R and ATG16L1 genes. The risk factors implicated with CD include smoking, low fiber- high carbohydrate diet, altered microbiome and medications such as non-steroidal anti-inflammatory drugs. CD is typically characterized by transmural inflammation of the intestine and could affect any part of the gastrointestinal tract from mouth to perianal area. In terms of distribution of the disease 25% of the patients have colitis only, 25% is ileitis only and 50% have ileocolitis. The Montreal classification is based on the age at diagnosis (<16, 17-40, > 40), disease location (Ileal, colonic, Ileocolonic) and the disease behavior (nonstricturing/nonpenetrating, stricturing, penetrating). The key features for diagnosing CD comprises a combination of radiographic, endoscopic and pathological findings demonstrating focal, asymmetric, transmural or granulomatous features. Abdominal Computed tomography (CT) enterography is the most preferred first-line radiologic study used in the assessment of small bowel CD. The diagnostic accuracy of magnetic resonance enterography/enteroclysis is similar to that of CT scans and also prevents exposure to ionizing radiation. Endoscopic scores are considered to be the gold standard tool to measure the activity of CD and they are used more commonly in the clinical trials to measure the efficacy of various drugs on inducing and maintaining mucosal healing. The most common scoring systems used to measure clinical disease activity include Crohn's Disease Activity Index (CDAI), HBI- Harvey-Bradshaw index (HBI), short inflammatory bowel disease questionnaire (SIBDQ) and Lehmann score. Management of Crohn's disease has been seen as an evolving challenge owing to its widely heterogeneous manifestations, overlapping characteristics with other inflammatory disorders, often elusive extraintestinal manifestations and uncertain etiology. Therapeutic interventions are tailored to address symptomatic response and subsequent tolerance of the intervention. Chronology of treatment should favor treatment dose acute disease or "induction therapy", followed by maintenance of adequate response or remission, i.e. "maintenance therapy". The medications which are highly effective in inducing remission include steroids and Tumor Necrosis Factor (TNF) inhibitors. Medications used to maintain remission include 5-aminosalicyclic acid products, immunomodulators (Azathioprine, 6-mercaptopurine, methotrexate) and TNF inhibitors (infliximab, adalimumab, certolizumab and golimumab). Surgical interventions like bowel resection, stricturoplasty or drainage of abscess is required in up to two thirds of CD patients during their lifetime. The most common indications for surgical resection are medically refractory disease, perforation, persisting or recurrent obstruction, abscess not amenable to percutaneous drainage, intractable hemorrhage, dysplasia or cancer. Endoscopic recurrence in postoperative CD patients, as defined by Rutgeers score i2-i4 occur in 30-90% of the patients at the neoterminal ileum within 12 months of surgery and almost universally by 5 years. Treating CD requires a comprehensive care team including the patient, primary care provider, and gastroenterologist. In summary CD is a chronic inflammatory condition with a remitting and relapsing course primarily affecting relatively younger population with significant socioeconomic effects.
Collapse
Affiliation(s)
- Mahesh Gajendran
- Department of Internal Medicine, Texas Tech University Health Science Center El Paso, 2000B Transmountain Road, El Paso, TX 79911, United States.
| | - Priyadarshini Loganathan
- Department of Internal Medicine, Texas Tech University Health Science Center El Paso, 2000B Transmountain Road, El Paso, TX 79911, United States
| | - Anthony P Catinella
- Department of Family Medicine, Texas Tech University Health Science Center El Paso, 2000B Transmountain Road, El Paso, TX 79911, United States
| | - Jana G Hashash
- Division of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh, M2, C Wing, 200 Lothrop Street, Pittsburgh, PA 15213, United States
| |
Collapse
|
38
|
Genetic and environmental factors significant for the presentation and development of inflammatory bowel disease. Eur J Gastroenterol Hepatol 2017; 29:909-915. [PMID: 28452812 DOI: 10.1097/meg.0000000000000877] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVES The aim of the study was to evaluate associations between inflammatory bowel disease (IBD) presentation and variants in NOD2, TLR4, TNF-α, IL-6, IL-1β, and IL-RN genes in order to identify possible environmental factors that may affect IBD occurrence, investigate potential predictors for surgical treatment of IBD, and correlate the presence of granulomas in biopsy specimens with clinical characteristics of Crohn's disease (CD) patients. PATIENTS AND METHODS We genotyped 167 IBD patients using PCR-based methodology and tested for disease genotype-phenotype associations. RESULTS In CD patients ileal localization of disease was more frequent in NOD2 variant carriers. Ileal CD was associated with IL-6 GC+CC genotypes, identifying C allele as a possible marker of increased risk for ileal CD. In CD patients a positive family history for IBD was related to earlier onset of disease, higher risk for CD-related surgery, and appendectomy. CD patients who are TLR4 299Gly carriers are at higher risk for surgery at onset of the disease compared with TLR4 299Asp variant carriers. The presence of granuloma in biopsy specimens was more frequent in patients in whom a diagnosis of CD was made during emergency surgery. Multivariate analysis showed that CD carriers of the 299Gly allele had a 4.6-fold higher risk for emergency surgery before CD diagnosis is established compared with noncarriers, suggesting an aggressive disease course. Granuloma in endoscopic biopsies is detected 5.4-fold more frequently in patients treated surgically at the time of diagnosis. CONCLUSION Genetic variants together with epidemiological and clinical data of IBD patients could potentially be used as predictors of the disease course.
Collapse
|
39
|
Feuerstein JD, Cheifetz AS. Crohn Disease: Epidemiology, Diagnosis, and Management. Mayo Clin Proc 2017; 92:1088-1103. [PMID: 28601423 DOI: 10.1016/j.mayocp.2017.04.010] [Citation(s) in RCA: 184] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 03/30/2017] [Accepted: 04/12/2017] [Indexed: 12/20/2022]
Abstract
Crohn disease is a chronic idiopathic inflammatory bowel disease condition characterized by skip lesions and transmural inflammation that can affect the entire gastrointestinal tract from the mouth to the anus. For this review article, we performed a review of articles in PubMed through February 1, 2017, by using the following Medical Subject Heading terms: crohns disease, crohn's disease, crohn disease, inflammatory bowel disease, and inflammatory bowel diseases. Presenting symptoms are often variable and may include diarrhea, abdominal pain, weight loss, nausea, vomiting, and in certain cases fevers or chills. There are 3 main disease phenotypes: inflammatory, structuring, and penetrating. In addition to the underlying disease phenotype, up to a third of patients will develop perianal involvement of their disease. In addition, in some cases, extraintestinal manifestations may develop. The diagnosis is typically made with endoscopic and/or radiologic findings. Disease management is usually with pharmacologic therapy, which is determined on the basis of disease severity and underlying disease phenotype. Although the goal of management is to control the inflammation and induce a clinical remission with pharmacologic therapy, most patients will eventually require surgery for their disease. Unfortunately, surgery is not curative and patients still require ongoing therapy even after surgery for disease recurrence. Importantly, given the risks of complications from both Crohn disease and the medications used to treat the disease process, primary care physicians play an important role in optimizing the preventative care management to reduce the risk of complications.
Collapse
Affiliation(s)
- Joseph D Feuerstein
- Department of Medicine and Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
| | - Adam S Cheifetz
- Department of Medicine and Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| |
Collapse
|
40
|
Chen YL, Hsu CW, Cheng CC, Yiang GT, Lin CS, Lin CL, Sung FC, Liang JA. Increased subsequent risk of inflammatory bowel disease association in patients with chronic pancreatitis: a nationwide population-based cohort study. Curr Med Res Opin 2017; 33:1077-1082. [PMID: 28277863 DOI: 10.1080/03007995.2017.1300143] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
PURPOSE To investigate the relationship between chronic pancreatitis (CP) and inflammatory bowel disease (IBD) in a large population-based cohort study. METHODS Data was obtained from the Taiwan National Health Insurance Research Database. The cohort study comprised 17,796 patients newly diagnosed with CP between 2000 and 2010 and 71,164 matched controls. A Cox proportional hazards model was used for evaluating the risk of IBD in the CP and comparison cohorts. RESULTS When examined with a mean follow-up period of 4.87 and 6.04 years for the CP and comparison cohorts, respectively, the overall incidence of IBD was 10.3 times higher in the CP cohort than in the comparison cohort (5.75 vs. 0.56 per 10,000 person-years). Compared with the comparison cohort, the CP cohort exhibited a higher risk of IBD, irrespective of age, sex, and presence or absence of comorbidities. Moreover, the CP cohort was associated with a significantly higher risk of Crohn's disease (adjusted hazard ratio [aHR] = 12.9, 95% confidence interval [CI] = 5.15-32.5) and ulcerative colitis (aHR = 2.80, 95% CI = 1.00-7.86). CONCLUSIONS This nationwide population-based cohort study revealed a significantly higher risk of IBD in patients with CP compared with control group. Clinicians should notice this association to avoid delayed diagnosis of IBD in patients with CP.
Collapse
Affiliation(s)
- Yu-Long Chen
- a Department of Emergency Medicine , Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation , Taipei , Taiwan
- e Department of Emergency Medicine, School of Medicine , Tzu Chi University , Taipei , Taiwan
| | - Chin-Wang Hsu
- b Department of Emergency Medicine, School of Medicine, College of Medicine , Taipei Medical University , Taipei , Taiwan
- c Department of Emergency and Critical Medicine , Wan Fang Hospital, Taipei Medical University , Taipei , Taiwan
| | - Cheng-Chung Cheng
- d Division of Cardiology, Department of Medicine , Tri-Service General Hospital, National Defense Medical Center , Taipei , Taiwan
| | - Giou-Teng Yiang
- a Department of Emergency Medicine , Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation , Taipei , Taiwan
- e Department of Emergency Medicine, School of Medicine , Tzu Chi University , Taipei , Taiwan
| | - Chin-Sheng Lin
- d Division of Cardiology, Department of Medicine , Tri-Service General Hospital, National Defense Medical Center , Taipei , Taiwan
| | - Cheng-Li Lin
- f Management Office for Health Data, China Medical University Hospital , Taichung , Taiwan
- g College of Medicine , China Medical University , Taichung , Taiwan
| | - Fung-Chang Sung
- h Department of Health Services Administration , China Medical University , Taichung , Taiwan
- i Faculty of Public Health , Mahidol University , Bangkok , Thailand
| | - Ji-An Liang
- j Graduate Institute of Clinical Medical Science and School of Medicine, College of Medicine , China Medical University , Taichung , Taiwan
- k Department of Radiation Oncology , China Medical University Hospital , Taichung , Taiwan
| |
Collapse
|
41
|
Burke KE, Boumitri C, Ananthakrishnan AN. Modifiable Environmental Factors in Inflammatory Bowel Disease. Curr Gastroenterol Rep 2017; 19:21. [PMID: 28397132 PMCID: PMC5651146 DOI: 10.1007/s11894-017-0562-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
PURPOSE OF REVIEW Environmental factors may influence predisposition to develop inflammatory bowel diseases (Crohn's disease, ulcerative colitis) or alter its natural history by modification of both the host immune response and intestinal microbial composition. The purpose of this review is to translate such evidence into clinical practice by a focus on interventional studies that have modified such environmental influences to improve disease outcomes. RECENT FINDINGS Several environmental influences have been identified in the recent literature including tobacco use, diet, antibiotics, vitamin D deficiency, stress, appendectomy, and oral contraceptive use. Some risk factors have similar influences on both Crohn's disease and ulcerative colitis while others are disease-specific or have divergent effects. Emerging epidemiologic evidence has confirmed the association of many of these factors with incident disease using prospective data. In addition, laboratory data has supported their mechanistic plausibility and relevance to intestinal inflammation.
Collapse
Affiliation(s)
- Kristin E Burke
- Division of Gastroenterology, Massachusetts General Hospital, Boston, USA
| | - Christine Boumitri
- Division of Gastroenterology, University of Missouri-Columbia, Columbia, USA
| | - Ashwin N Ananthakrishnan
- Division of Gastroenterology, Massachusetts General Hospital, Boston, USA.
- Massachusetts General Hospital Crohn's and Colitis Center, 165 Cambridge Street, 9th Floor, Boston, MA, 02114, USA.
| |
Collapse
|
42
|
Family history, comorbidity, smoking and other risk factors in microscopic colitis: a case-control study. Eur J Gastroenterol Hepatol 2017; 29:587-594. [PMID: 28350750 DOI: 10.1097/meg.0000000000000832] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Data on heredity, risk factors and comorbidity in microscopic colitis, encompassing collagenous colitis (CC) and lymphocytic colitis (LC), are limited. AIM The aim was to carry out a case-control study of family history, childhood circumstances, educational level, marital status, smoking and comorbidity in microscopic colitis. METHODS A postal questionnaire was sent in 2008-2009 to microscopic colitis patients resident in Sweden and three population-based controls per patient, matched for age, sex and municipality. RESULTS Some 212 patients and 627 controls participated in the study. There was an association with a family history of microscopic colitis in both CC [odds ratio (OR): 10.3; 95% confidence interval (CI): 2.1-50.4, P=0.004] and LC (OR not estimated, P=0.008). Current smoking was associated with CC [OR: 4.7; 95% CI: 2.4-9.2, P<0.001) and LC (OR: 3.2; 95% CI: 1.6-6.7, P=0.002). The median age at diagnosis was around 10 years earlier in ever-smokers compared with never-smokers.CC was associated with a history of ulcerative colitis (UC) (OR: 8.7, 95% CI: 2.2-33.7, P=0.002), thyroid disease (OR: 2.3; 95% CI: 1.1-4.5, P=0.02), coeliac disease (OR: 13.1; 95% CI: 2.7-62.7, P=0.001), rheumatic disease (OR 1.9; 95% CI: 1.0-3.5, P=0.042) and previous appendicectomy (OR: 2.2; 95% CI: 1.3-3.8, P=0.003), and LC with UC (OR: 6.8; 95% CI: 1.7-28.0, P=0.008), thyroid disease (OR: 2.4; 95% CI: 1.1-5.4, P=0.037) and coeliac disease (OR: 8.7; 95% CI: 2.8-26.7, P<0.001). CONCLUSION Association with a family history of microscopic colitis indicates that familial factors may be important. The association with a history of UC should be studied further as it may present new insights into the pathogenesis of microscopic colitis and UC.
Collapse
|
43
|
Uniken Venema WT, Voskuil MD, Dijkstra G, Weersma RK, Festen EA. The genetic background of inflammatory bowel disease: from correlation to causality. J Pathol 2016; 241:146-158. [PMID: 27785786 DOI: 10.1002/path.4817] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 09/13/2016] [Accepted: 09/27/2016] [Indexed: 12/12/2022]
Abstract
Recent studies have greatly improved our insight into the genetic background of inflammatory bowel disease (IBD). New high-throughput technologies and large-scale international collaborations have contributed to the identification of 200 independent genetic risk loci for IBD. However, in most of these loci, it is unclear which gene conveys the risk for IBD. More importantly, it is unclear which variant within or near the gene is causal to the disease. Using targeted GWAS, imputation, resequencing of risk loci, and in silico fine-mapping of densely typed loci, several causal variants have been identified in IBD risk genes, and various pathological pathways have been uncovered. Current research in the field of IBD focuses on the effect of these causal variants on gene expression and protein function. However, more elements than only the genome must be taken into account to disentangle the multifactorial pathology of IBD. The genetic risk loci identified to date only explain a small part of genetic variance in disease risk. Currently, large multi-omics studies are incorporating factors ranging from the gut microbiome to the environment. In this review, we present the progress that has been made in IBD genetic research and stress the importance of studying causality to increase our understanding of the pathogenesis of IBD. We highlight important causal genetic variants in the candidate genes NOD2, ATG16L1, IRGM, IL23R, CARD9, RNF186, and PRDM1. We describe their downstream effects on protein function and their direct effects on the gut immune system. Furthermore, we discuss the future role of genetics in unravelling disease mechanisms in IBD. Copyright © 2016 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Werna Tc Uniken Venema
- Department of Gastroenterology and Hepatology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Michiel D Voskuil
- Department of Gastroenterology and Hepatology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Gerard Dijkstra
- Department of Gastroenterology and Hepatology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Rinse K Weersma
- Department of Gastroenterology and Hepatology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Eleonora Am Festen
- Department of Gastroenterology and Hepatology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands.,Department of Genetics, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| |
Collapse
|
44
|
Chung SD, Huang CC, Lin HC, Tsai MC, Chen CH. Increased Risk of Clinically Significant Gallstones following an Appendectomy: A Five-Year Follow-Up Study. PLoS One 2016; 11:e0165829. [PMID: 27788255 PMCID: PMC5082793 DOI: 10.1371/journal.pone.0165829] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 10/05/2016] [Indexed: 12/12/2022] Open
Abstract
Although the vermiform appendix is commonly considered a vestigial organ, adverse health consequences after an appendectomy have garnered increasing attention. In this study, we investigated the risks of gallstone occurrence during a 5-year follow-up period after an appendectomy, using a population-based dataset. We used data from the Taiwan Longitudinal Health Insurance Database 2005. The exposed cohort included 4916 patients who underwent an appendectomy. The unexposed cohort was retrieved by randomly selecting 4916 patients matched with the exposed cohort in terms of sex, age, and year. We individually tracked each patient for a 5-year period to identify those who received a diagnosis of gallstones during the follow-up period. Cox proportional hazard regressions were performed for the analysis. During the 5-year follow-up period, the incidence rate per 1000 person-years was 4.71 for patients who had undergone an appendectomy, compared to a rate of 2.59 for patients in the unexposed cohort (p<0.001). Patients who had undergone an appendectomy were independently associated with a 1.79 (95% CI = 1.29~2.48)-fold increased risk of being diagnosed with gallstones during the 5-year follow-up period. We found that among female patients, the adjusted hazard ratio of gallstones was 2.25 (95% CI = 1.41~3.59) for patients who underwent an appendectomy compared to unexposed patients. However, for male patients, we failed to observe an increased hazard for gallstones among patients who underwent an appendectomy compared to unexposed patients. We found an increased risk of a subsequent gallstone diagnosis within 5 years after an appendectomy.
Collapse
Affiliation(s)
- Shiu-Dong Chung
- Department of Surgery, Far Eastern Memorial Hospital, Banciao, Taipei, Taiwan
- Graduate Program in Biomedical Informatics, College of Informatics, Yuan-Ze University, Chung-Li, Taiwan
- Sleep Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chung-Chien Huang
- School of Health Care Administration, Taipei Medical University, Taipei, Taiwan
| | - Herng-Ching Lin
- Sleep Research Center, Taipei Medical University Hospital, Taipei, Taiwan
- School of Health Care Administration, Taipei Medical University, Taipei, Taiwan
| | - Ming-Chieh Tsai
- Division of Gastroenterology, Department of Internal Medicine, Cathay General Hospital, Hsinchu Branch, Taiwan
| | - Chao-Hung Chen
- Department of Cosmetic Applications and Management, Mackay Junior College of Medicine, Nursing, and Management, Taipei, Taiwan
- Department of Thoracic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
- Department & Institute of Physiology, National Yang-Ming University, Taipei, Taiwan
- * E-mail:
| |
Collapse
|
45
|
Abegunde AT, Muhammad BH, Bhatti O, Ali T. Environmental risk factors for inflammatory bowel diseases: Evidence based literature review. World J Gastroenterol 2016; 22:6296-6317. [PMID: 27468219 PMCID: PMC4945988 DOI: 10.3748/wjg.v22.i27.6296] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/19/2016] [Accepted: 06/28/2016] [Indexed: 02/06/2023] Open
Abstract
AIM: Advances in genetics and immunology have contributed to the current understanding of the pathogenesis of inflammatory bowel diseases (IBD).
METHODS: The current opinion on the pathogenesis of IBD suggests that genetically susceptible individuals develop intolerance to dysregulated gut microflora (dysbiosis) and chronic inflammation develops as a result of environmental insults. Environmental exposures are innumerable with varying effects during the life course of individuals with IBD. Studying the relationship between environmental factors and IBD may provide the missing link to increasing our understanding of the etiology and increased incidence of IBD in recent years with implications for prevention, diagnosis, and treatment. Environmental factors are heterogeneous and genetic predisposition, immune dysregulation, or dysbiosis do not lead to the development of IBD in isolation.
RESULTS: Current challenges in the study of environmental factors and IBD are how to effectively translate promising results from experimental studies to humans in order to develop models that incorporate the complex interactions between the environment, genetics, immunology, and gut microbiota, and limited high quality interventional studies assessing the effect of modifying environmental factors on the natural history and patient outcomes in IBD.
CONCLUSION: This article critically reviews the current evidence on environmental risk factors for IBD and proposes directions for future research.
Collapse
|
46
|
Vindigni SM, Zisman TL, Suskind DL, Damman CJ. The intestinal microbiome, barrier function, and immune system in inflammatory bowel disease: a tripartite pathophysiological circuit with implications for new therapeutic directions. Therap Adv Gastroenterol 2016; 9:606-25. [PMID: 27366227 PMCID: PMC4913337 DOI: 10.1177/1756283x16644242] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
We discuss the tripartite pathophysiological circuit of inflammatory bowel disease (IBD), involving the intestinal microbiota, barrier function, and immune system. Dysfunction in each of these physiological components (dysbiosis, leaky gut, and inflammation) contributes in a mutually interdependent manner to IBD onset and exacerbation. Genetic and environmental risk factors lead to disruption of gut homeostasis: genetic risks predominantly affect the immune system, environmental risks predominantly affect the microbiota, and both affect barrier function. Multiple genetic and environmental 'hits' are likely necessary to establish and exacerbate disease. Most conventional IBD therapies currently target only one component of the pathophysiological circuit, inflammation; however, many patients with IBD do not respond to immune-modulating therapies. Hope lies in new classes of therapies that target the microbiota and barrier function.
Collapse
Affiliation(s)
- Stephen M. Vindigni
- Division of Gastroenterology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Timothy L. Zisman
- Division of Gastroenterology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - David L. Suskind
- Department of Pediatrics, Seattle Children’s Hospital and University of Washington, Seattle, WA, USA
| | | |
Collapse
|
47
|
Sun W, Han X, Wu S, Yang C. Tonsillectomy and the risk of inflammatory bowel disease: A systematic review and meta-analysis. J Gastroenterol Hepatol 2016; 31:1085-94. [PMID: 26678358 DOI: 10.1111/jgh.13273] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 10/19/2015] [Accepted: 12/06/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIM Tonsillectomy remains a controversial environmental factor in the etiology of inflammatory bowel disease (IBD). This meta-analysis aims to elucidate a more defined role of tonsillectomy in the development of IBD. METHODS Four databases, including PubMed, EMBASE, the Cochrane Library, and Web of Science, were searched for studies exploring the association between tonsillectomy and the risk of IBD. The pooled estimates of odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using a random effects model. Heterogeneity was assessed using chi-squared and I(2) statistical analysis. A funnel plot was performed to assess publication bias. RESULTS A total of 23 observational studies involving 19 569 patients were included in our meta-analysis. Of these, 17 studies investigated the association between tonsillectomy and Crohn's disease (CD), and 22 studies explored its relationship with ulcerative colitis (UC). Overall, a positive relationship between tonsillectomy and development of CD (OR 1.37, 95% CI: 1.16-1.62) was observed, while there was no association between tonsillectomy and UC (OR 0.94, 95% CI: 0.84-1.05). When ORs were adjusted for smoking, the pooled OR for CD increased to 1.66 (95% CI: 1.03-2.68) and, for UC, changed to 1.03 (95% CI: 0.74-1.44). CONCLUSIONS This meta-analysis demonstrates that tonsillectomy is associated with an increased risk of developing CD. We found no evidence to suggest that tonsillectomy exerts a protective effect on the development of UC, as is the case with appendectomy. Further prospective studies are required to confirm the validity of these observations.
Collapse
Affiliation(s)
- Weili Sun
- Division of Gastroenterology and Hepatology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Xiao Han
- Department of Gastroenterology, the First People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Siyuan Wu
- Division of Gastroenterology and Hepatology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Chuanhua Yang
- Division of Gastroenterology and Hepatology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| |
Collapse
|
48
|
Niu J, Miao J, Tang Y, Nan Q, Liu Y, Yang G, Dong X, Huang Q, Xia S, Wang K, Miao Y. Identification of Environmental Factors Associated with Inflammatory Bowel Disease in a Southwestern Highland Region of China: A Nested Case-Control Study. PLoS One 2016; 11:e0153524. [PMID: 27070313 PMCID: PMC4829194 DOI: 10.1371/journal.pone.0153524] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 03/30/2016] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The aim of this study was to examine environmental factors associated with inflammatory bowel disease (IBD) in Yunnan Province, a southwestern highland region of China. METHODS In this nested case-control study, newly diagnosed ulcerative colitis (UC) cases in 2 cities in Yunnan Province and Crohn's disease (CD) cases in 16 cities in Yunnan Province were recruited between 2008 and 2013. Controls were matched by geography, sex and age at a ratio of 1:4. Data were collected using the designed questionnaire. Conditional logistic regression models were used to estimate adjusted odds ratios (ORs). RESULTS A total of 678 UC and 102 CD cases were recruited. For UC, various factors were associated with an increased risk of developing UC: dietary habits, including frequent irregular meal times; consumption of fried foods, salty foods and frozen dinners; childhood factors, including intestinal infectious diseases and frequent use of antibiotics; and other factors, such as mental labor, high work stress, use of non-aspirin non-steroidal anti-inflammatory drugs and allergies (OR > 1, p < 0.05). Other factors showed a protective effect: such as consumption of fruits, current smoking, physical activity, and drinking tea (OR < 1, p < 0.05). For CD, appendectomy and irregular meal times increased the disease risk (OR >1, p < 0.05), whereas physical activity may have reduced this risk (OR < 1, p < 0.05). CONCLUSIONS This study is the first nested case-control study to analyze the association between environmental factors and IBD onset in a southwestern highland region of China. Certain dietary habits, lifestyles, allergies and childhood factors may play important roles in IBD, particularly UC.
Collapse
Affiliation(s)
- Junkun Niu
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Jiarong Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Yuan Tang
- Department of Gastroenterology, The First People's Hospital of Qujing, Qujing, Yunnan Province, P. R. China
| | - Qiong Nan
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Yan Liu
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Gang Yang
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Xiangqian Dong
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Qi Huang
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Shuxian Xia
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Kunhua Wang
- Department of General Surgery, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Yinglei Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| |
Collapse
|
49
|
Healy JM, Olgun LF, Hittelman AB, Ozgediz D, Caty MG. Pediatric incidental appendectomy: a systematic review. Pediatr Surg Int 2016; 32:321-35. [PMID: 26590816 DOI: 10.1007/s00383-015-3839-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/04/2015] [Indexed: 12/17/2022]
Abstract
Incidental appendectomy is the removal of the vermiform appendix accompanying another operation, without evidence of acute appendicitis. It is generally performed to eliminate the risk of future appendicitis. The risks and benefits of incidental appendectomy during various operations in children have been debated for over a century, but need to be revisited in light of innovations in medical practice, including minimally invasive surgery, improved imaging techniques, and use of the appendix as a tubular conduit for reconstruction. A detailed review was undertaken of the techniques, pathology, risks of appendectomy, utility of the appendix, and incidental appendectomy in the treatment of specific pediatric medical conditions. A comprehensive literature search was performed, and retrieved results were reviewed for relevance to the topic. The decision to perform a pediatric incidental appendectomy relies on informed consideration of the individual patient's co-morbid conditions, the indication for the initial operation, the future utility of the appendix, and the risk of future appendiceal pathology. The discussion includes a variety of situations and comorbid conditions that may influence a surgeon's decision to perform incidental appendectomy.
Collapse
Affiliation(s)
- James M Healy
- Department of Surgery, Yale University School of Medicine, 333 Cedar Street, TMP202, Box 208062, New Haven, CT, 06520, USA
| | - Lena F Olgun
- Department of Surgery, Yale University School of Medicine, 333 Cedar Street, TMP202, Box 208062, New Haven, CT, 06520, USA
| | - Adam B Hittelman
- Department of Urology, Yale School of Medicine, New Haven, CT, USA
| | - Doruk Ozgediz
- Department of Surgery, Yale University School of Medicine, 333 Cedar Street, TMP202, Box 208062, New Haven, CT, 06520, USA
| | - Michael G Caty
- Department of Surgery, Yale University School of Medicine, 333 Cedar Street, TMP202, Box 208062, New Haven, CT, 06520, USA.
| |
Collapse
|
50
|
Legaki E, Gazouli M. Influence of environmental factors in the development of inflammatory bowel diseases. World J Gastrointest Pharmacol Ther 2016; 7:112-125. [PMID: 26855817 PMCID: PMC4734944 DOI: 10.4292/wjgpt.v7.i1.112] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 10/20/2015] [Accepted: 12/04/2015] [Indexed: 02/06/2023] Open
Abstract
Idiopathic inflammatory bowel diseases (IBD), Crohn’s disease (CD) and ulcerative colitis (UC), are multifactorial diseases that are manifested after disruption of a genetic predisposed individual and its intestinal microflora through an environmental stimulus. Urbanization and industrialization are associated with IBD. Epidemiological data, clinical observations and family/immigrants studies indicate the significance of environmental influence in the development of IBD. Some environmental factors have a different effect on the subtypes of IBD. Smoking and appendectomy is negatively associated with UC, but they are aggravating factors for CD. A westernized high fat diet, full of refined carbohydrates is strongly associated with the development of IBD, contrary to a high in fruit, vegetables and polyunsaturated fatty acid-3 diet that is protective against these diseases. High intake of nonsteroidal antiinflammatory drug and oral contraceptive pills as well as the inadequacy of vitamin D leads to an increased risk for IBD and a more malignant course of disease. Moreover, other factors such as air pollution, psychological factors, sleep disturbances and exercise influence the development and the course of IBD. Epigenetic mechanism like DNA methylation, histone modification and altered expression of miRNAS could explain the connection between genes and environmental factors in triggering the development of IBD.
Collapse
|