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Miller PF. Targeting microbial pathogenic mechanisms as a novel therapeutic strategy in IBD. Mol Med 2024; 30:122. [PMID: 39135000 PMCID: PMC11321147 DOI: 10.1186/s10020-024-00840-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 05/19/2024] [Indexed: 08/15/2024] Open
Abstract
BACKGROUND Current therapy for patients suffering from inflammatory bowel diseases (IBD) is focused on inflammatory mechanisms exclusively and not the dysbiotic microbiota, despite growing evidence implicating a role for intestinal microbes in disease. MAIN BODY Ongoing research into the intestinal microbiota of IBD patients, using new technologies and/or deeper application of existing ones, has identified a number of microorganisms whose properties and behaviors warrant consideration as causative factors in disease. Such studies have implicated both bacteria and fungi in the pathogenesis of disease. Some of these organisms manifest mechanisms that should be amenable to therapeutic intervention via either conventional or novel drug discovery platforms. Of particular note is a deeper characterization of microbial derived proteases and their destructive potential. CONCLUSION Given the steady progress on the mechanistic role of the microbiota in inflammatory diseases, it is reasonable to anticipate a future in which therapeutics targeting microbial derived pathogenic factors play an important role in improving the lives of IBD patients.
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Affiliation(s)
- Paul F Miller
- Lighthouse Biopharma Consulting, LLC, 39 Emerald Glen Lane, Salem, CT, 06420, USA.
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Sakurai Kimura CM, Scanavini Neto A, Queiroz NSF, Horvat N, Camargo MGM, Borba MR, Sobrado CW, Cecconello I, Nahas SC. Abdominal Surgery in Crohn's Disease: Risk Factors for Complications. Inflamm Intest Dis 2020; 6:18-24. [PMID: 33850835 DOI: 10.1159/000510999] [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] [Received: 04/16/2020] [Accepted: 08/17/2020] [Indexed: 11/19/2022] Open
Abstract
Introduction Abdominal surgery in patients with Crohn's disease (CD) is challenging, especially in the biologic era. The aim of this study was to evaluate factors associated with increased risk for postoperative complications in CD. Methods A retrospective study was conducted with consecutive patients who underwent abdominal surgery for CD from January 2012 to January 2018. Results Of 103 patients, 32% had postoperative complications. Gender, age, disease location and phenotype, hemoglobin and albumin levels, previous abdominal surgery, and preoperative optimization did not differ between the groups with or without complications. Thirty-five percent of the patients were under anti-TNF therapy, and this medication was not associated with increased risk for postoperative complications. Time since the onset of the disease was significantly higher in patients with complications (12.9 vs. 9.4, p = 0.04). In multivariate analysis, creation of ostomy and urgent surgery were the only variables independently associated with increased risk for complications (OR 3.2, 95% CI 1.12-9.46 and OR 2.94, 95% CI 0.98-9.09, respectively). Conclusion Urgent surgery for CD should preferably be performed in specialized centers, and creation of stoma is not necessarily associated with lower rate of postoperative complications but rather less severe complications.
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Affiliation(s)
- Cintia Mayumi Sakurai Kimura
- Department of Colon and Rectal Surgery, Hospital das Clínicas, University of São Paulo Medical School, São Paulo, Brazil
| | - Arceu Scanavini Neto
- Department of Colon and Rectal Surgery, Hospital das Clínicas, University of São Paulo Medical School, São Paulo, Brazil
| | | | - Natally Horvat
- Department of Radiology, Hospital das Clínicas, University of São Paulo Medical School, São Paulo, Brazil
| | | | - Marcelo Rodrigues Borba
- Department of Colon and Rectal Surgery, Hospital das Clínicas, University of São Paulo Medical School, São Paulo, Brazil
| | - Carlos Walter Sobrado
- Department of Colon and Rectal Surgery, Hospital das Clínicas, University of São Paulo Medical School, São Paulo, Brazil
| | - Ivan Cecconello
- Department of Colon and Rectal Surgery, Hospital das Clínicas, University of São Paulo Medical School, São Paulo, Brazil
| | - Sergio Carlos Nahas
- Department of Colon and Rectal Surgery, Hospital das Clínicas, University of São Paulo Medical School, São Paulo, Brazil
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Forss A, Myrelid P, Olén O, Everhov ÅH, Nordenvall C, Halfvarson J, Ludvigsson JF. Validating surgical procedure codes for inflammatory bowel disease in the Swedish National Patient Register. BMC Med Inform Decis Mak 2019; 19:217. [PMID: 31711471 PMCID: PMC6849315 DOI: 10.1186/s12911-019-0948-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/23/2019] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND About 50% of patients with Crohn's disease (CD) and about 20% of those with ulcerative colitis (UC) undergo surgery at some point during the course of the disease. The diagnostic validity of the Swedish National Patient Register (NPR) has previously been shown to be high for inflammatory bowel disease (IBD), but there are little data on the validity of IBD-related surgical procedure codes. METHODS Using patient chart data as the gold standard, surgical procedure codes registered between 1966 and 2014 in the NPR were abstracted and validated in 262 randomly selected patients with a medical diagnosis of IBD. Of these, 53 patients had reliable data about IBD-related surgery. The positive predictive value (PPV), sensitivity and specificity of the surgical procedure codes were calculated. RESULTS In total, 158 surgical procedure codes were registered in the NPR. One hundred fifty-five of these, representing 60 different procedure codes, were also present in the patient charts and validated using a standardized form. Of the validated codes 153/155 were concordant with the patient charts, corresponding to a PPV of 96.8% (95%CI = 93.9-99.1). Stratified in abdominal, perianal and other surgery, the corresponding PPVs were 94.1% (95%CI = 88.7-98.6), 100% (95%CI = 100-100) and 98.1% (95%CI = 93.1-100), respectively. Of 164 surgical procedure codes in the validated patient charts, 155 were registered in the NPR, corresponding to a sensitivity of the surgical procedure codes of 94.5% (95%CI = 89.6-99.3). The specificity of the NPR was 98.5% (95%CI = 97.6-100). CONCLUSIONS Data on IBD-related surgical procedure codes are reliable, with the Swedish National Patient Register showing a high sensitivity and specificity for such surgery.
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Affiliation(s)
- Anders Forss
- 0000 0004 1937 0626grid.4714.6Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Box 281, SE-171 77 Stockholm, Sweden
| | - Pär Myrelid
- 0000 0000 9309 6304grid.411384.bDepartment of Clinical and Experimental Medicine, Faculty of Health, Linköping University, Department of Surgery, Linköping University Hospital, Linköping, Sweden
| | - Ola Olén
- 0000 0004 1937 0626grid.4714.6Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- 0000 0000 8986 2221grid.416648.9Sachs’ Children and Youth Hospital, Stockholm South General Hospital, Stockholm, Sweden
| | - Åsa H. Everhov
- 0000 0004 1937 0626grid.4714.6Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Science and Education, South General Hospital, Stockholm, Sweden
| | - Caroline Nordenvall
- 0000 0004 1937 0626grid.4714.6Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- 0000 0000 9241 5705grid.24381.3cCenter for Digestive Disease, Division of Coloproctology, Karolinska University Hospital, Stockholm, Sweden
| | - Jonas Halfvarson
- 0000 0001 0738 8966grid.15895.30Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Jonas F. Ludvigsson
- 0000 0004 1937 0626grid.4714.6Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Box 281, SE-171 77 Stockholm, Sweden
- 0000 0001 0123 6208grid.412367.5Department of Paediatrics, Örebro University Hospital, Örebro, Sweden
- 0000 0004 1936 8868grid.4563.4Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK
- 0000000419368729grid.21729.3fDepartment of Medicine, Columbia University College of Physicians and Surgeons, New York, New York, USA
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Kolehmainen S, Lepistö A, Färkkilä M. Impact of anti-TNF-alpha therapy on colectomy rate and indications for colectomy in ulcerative colitis: comparison of two patient cohorts from 2005 to 2007 and from 2014 to 2016 . Scand J Gastroenterol 2019; 54:707-711. [PMID: 31136207 DOI: 10.1080/00365521.2019.1620326] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Objectives: The aim of this study is to assess the impact of biological therapy on the colectomy rate and indications for colectomy in ulcerative colitis (UC) at Helsinki University Hospital (HUH) catchment area in Finland. Methods: This study was conducted retrospectively by comparing two cohorts of UC and indeterminate colitis patients that underwent colectomy in a single centre in HUH during the years 2005-2007 and 2014-2016. All patient data were collected from hospital patient records. Results: In 2005-2007 and 2014-2016, respectively, 2.3 and 18.8% of patients had received biological therapy and more specifically 2.3 and 10.5% infliximab within 3 months prior to colectomy. Colectomy rates were 8.6 (7.2-10.2) and 5.1 (4.3-6.1)/1.000 patient-years (p < .001). During 2005-2007 and 2014-2016, the indications for colectomy were: refractory disease 79.1 and 79.7%, dysplasia 16.3 and 12.8%, cancer 2.3 and 3.0% and other reasons 2.3 and 4.5%, respectively. Emergency colectomy covered 8.5 and 9.8% of the operations. Conclusions: In addition to the markedly increased use of biological therapy during the time preceding colectomy, we noticed a significantly decreased rate of surgery but no changes in the indications for colectomy. Biological therapy seems to have had a favourable effect on the colectomy rate. Even so, the main indication for surgery is still a refractory disease, suggesting urgent need for better treatment options.
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Affiliation(s)
- Sara Kolehmainen
- University of Helsinki , Helsinki , Finland.,Department of Gastroenterology, Helsinki University Hospital , Helsinki , Finland
| | - Anna Lepistö
- Department of Colorectal Surgery, Helsinki University Hospital , Helsinki , Finland
| | - Martti Färkkilä
- University of Helsinki , Helsinki , Finland.,Department of Gastroenterology, Helsinki University Hospital , Helsinki , Finland
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Immunosuppressed Patients with Crohn's Disease Are at Increased Risk of Postoperative Complications: Results from the ACS-NSQIP Database. J Gastrointest Surg 2019; 23:1188-1197. [PMID: 30887300 DOI: 10.1007/s11605-019-04186-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Accepted: 02/26/2019] [Indexed: 01/31/2023]
Abstract
BACKGROUND The impact of immunosuppressants on postoperative complications following colon resections for Crohn's disease remains controversial. This study aimed to compare postoperative outcomes between immunosuppressed and immunocompetent patients with Crohn's disease undergoing elective colon resection. METHODS Analysis of 30-day outcomes using a cohort from the American College of Surgeons National Surgical Quality Improvement Program colectomy-specific database was performed. The database is populated by trained clinical reviewers who collect 30-day postoperative outcomes for patients treated at participating North-American institutions. Adult patients who underwent an elective colectomy between 2011 and 2015 were included. Immunosuppression for Crohn's disease was predefined as use of regular corticosteroids or immunosuppressants within 30 days of the operation. Patients who received chemotherapy within 90 days of surgery, and patients who had disseminated cancer, preoperative shock, or emergency surgery were excluded. Primary outcome was infectious complications. RESULTS Three thousand eight hundred sixty patients with Crohn's disease required elective colon resection and met the inclusion criteria. Of these, 2483 were immunosuppressed and 1377 were immunocompetent. On multivariate analysis, the odds of infectious complications [OR 1.25; 95% CI (1.033-1.523)], overall surgical site infection [1.40; (1.128-1.742)], organ space surgical site infection [1.47; (1.094-1.984)], and anastomotic leak [1.51; (1.018-2.250)] were significantly higher for immunosuppressed compared to immunocompetent patients with Crohn's disease. CONCLUSIONS Patients with Crohn's disease who were on immunosuppressant medications within 30 days of elective colectomy had significantly increased rates of infectious complications, overall surgical site infection, organ space surgical site infection, and anastomotic leak compared to patients who were not on immunosuppressive agents.
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Surgical Rates for Crohn's Disease are Decreasing: A Population-Based Time Trend Analysis and Validation Study. Am J Gastroenterol 2017; 112:1840-1848. [PMID: 29087396 PMCID: PMC5729339 DOI: 10.1038/ajg.2017.394] [Citation(s) in RCA: 136] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 08/10/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Temporal changes for intestinal resections for Crohn's disease (CD) are controversial. We validated administrative database codes for CD diagnosis and surgery in hospitalized patients and then evaluated temporal trends in CD surgical resection rates. METHODS First, we validated International Classification of Disease (ICD)-10-CM coding for CD diagnosis in hospitalized patients and Canadian Classification of Health Intervention coding for surgical resections. Second, we used these validated codes to conduct population-based surveillance between fiscal years 2002 and 2010 to identify adult CD patients undergoing intestinal resection (n=981). Annual surgical rate was calculated by dividing incident surgeries by estimated CD prevalence. Time trend analysis was performed and annual percent change (APC) with 95% confidence intervals (CI) in surgical resection rates were calculated using a generalized linear model assuming a Poisson distribution. RESULTS In the validation cohort, 101/104 (97.1%) patients undergoing surgery and 191/200 (95.5%) patients admitted without surgery were confirmed to have CD on chart review. Among the 116 administrative database codes for surgical resection, 97.4% were confirmed intestinal resections on chart review. From 2002 to 2010, the overall CD surgical resection rate was 3.8 resections per 100 person-years. During the study period, rate of surgery decreased by 3.5% per year (95% CI: -1.1%, -5.8%), driven by decreasing emergent operations (-10.1% per year (95% CI: -13.4%, -6.7%)) whereas elective surgeries increased by 3.7% per year (95% CI: 0.1%, 7.3%). CONCLUSIONS Overall surgical resection rates in CD are decreasing, but a paradigm shift has occurred whereby elective operations are now more commonly performed than emergent surgeries.
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Raghu Subramanian C, Triadafilopoulos G. Care of inflammatory bowel disease patients in remission. Gastroenterol Rep (Oxf) 2016; 4:261-271. [PMID: 27899522 PMCID: PMC5193066 DOI: 10.1093/gastro/gow032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 08/21/2016] [Accepted: 09/04/2016] [Indexed: 12/11/2022] Open
Abstract
Inflammatory bowel disease (IBD) comprises two distinct conditions: ulcerative colitis and Crohn’s disease, both of which are chronic, relapsing disorders carrying significant morbidity, mortality and healthcare costs. With growing attention to coordinated healthcare for patients with chronic systemic diseases, this review focuses on the care of IBD patients in remission, their concerns, quality of life, follow-up, the role of primary care physicians and the IBD-specific aspects of long-term care. We did an extensive PubMed search for articles pertaining to IBD patients in remission and, along with the authors’ experience, formulated a comprehensive review. The difficulties faced by IBD patients in remission include but are not limited to education and employment concerns, psychosocial issues, problems related to health insurance, nutrition, fertility and infections. This review also addresses newer treatment modalities, the debatable effects of smoking on IBD and the importance of vaccination. IBD in remission can be a challenge due to its multifaceted nature; however, with a coordinated approach by gastroenterologists and other involved practitioners, several of these issues can be addressed.
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