AI Article Synopsis
- The study investigates the protective effects of Bacteroides thetaiotaomicron, a beneficial gut bacteria, against inflammatory bowel disease (IBD), particularly Crohn's disease, in rodent models.
- B. thetaiotaomicron treatment significantly improved symptoms of IBD, such as weight loss and colon damage, through both live bacteria and freeze-dried formulations, as well as a specific protein that reduced inflammation.
- The findings suggest that B. thetaiotaomicron and its products could be promising new alternatives for treating Crohn's disease and improving gut health.
Article Abstract
Background: Alterations in the gut microbiota are strongly associated with the development of inflammatory bowel disease (IBD), particularly with Crohn's disease, which is characterized by reduced abundance of commensal anaerobic bacteria including members of the Bacteroides genus. Our aim was to investigate the protective effects of Bacteroides thetaiotaomicron, an abundant member of this genus, in different rodent models of IBD.
Methods: We assessed the effect of B. thetaiotaomicron administration on primary readouts of colitis (weight loss, histopathology, and immune parameters) in dextran sodium sulphate (DSS) and interleukin-10 knockout (IL10KO) models of IBD. Efficacy of a freeze-dried bacterial formulation and a purified recombinant protein of B. thetaiotaomicron was also investigated.
Results: B. thetaiotaomicron showed protective effects in both DSS and IL10KO rodent models, as demonstrated by significant amelioration of weight loss, colon shortening, histopathological damage and immune activation. This efficacy was not exclusive to actively growing bacterial preparations but was retained by freeze-dried cells of B. thetaiotaomicron. A pirin-like protein (PLP) of B. thetaiotaomicron, identified by microarray analysis during coculture of the bacterial strain with Caco-2 cells, reduced pro-inflammatory NF-κB signalling in these intestinal epithelial cells. Recombinant PLP partially recapitulated the effect of the whole strain in a rat DSS model.
Conclusions: B. thetaiotaomicron displays strong efficacy in preclinical models of IBD and protects against weight loss, histopathological changes in the colon and inflammatory markers. These data indicate that the live strain or its products may be a novel alternative to current treatment options for Crohn's disease.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6290787 | PMC |
| http://dx.doi.org/10.1093/ibd/izy281 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effectiveness and safety of biosimilars in pediatric inflammatory bowel diseases: an observational longitudinal study on the French National Health Data System.
World J Pediatr
January 2025
EPI-PHARE, French National Agency for Medicines and Health Products Safety (ANSM) and French National Health Insurance (CNAM), 143-147 Boulevard Anatole France, 93285, Saint-Denis, France.
Background: Data on biosimilar use in pediatric inflammatory bowel diseases (IBD) are scarce compared to the status of studies in adults, resulting in limitations in its treatment. We compared effectiveness and safety of biosimilars versus originators in this population.
Methods: We used data from the French National Health Data System to identify children (less than 18 years old at treatment initiation) initiating treatment with a biosimilar or the originator infliximab or adalimumab for Crohn's disease (CD) or ulcerative colitis (UC), from first biosimilar launch (January 2015 and October 2018, respectively) to 31 December 2022.
Real-world use of biologics during the first year of treatment for newly diagnosed Crohn's disease in Japan: a claims analysis from 2010 to 2021.
Intest Res
January 2025
Department of Gastroenterology and Hepatology, Kyorin University School of Medicine, Mitaka, Japan.
Background/aims: Crohn's disease (CD) leads to bowel damage and disability if suboptimally treated. We investigated firstyear treatment decisions and real-world use of biologics in patients with CD in Japan.
Methods: In this retrospective observational study (2010-2021) from the JMDC claims database, patients with a new diagnosis of CD (no CD claims record within 12 months before index) who received ≥ 1 pre-defined treatment were grouped by use of biologics and systemic corticosteroids (SCS) within the first year of diagnosis.
Prevalence and outcome of sarcopenia in patients with inflammatory bowel disease: a follow-up study.
Intest Res
January 2025
Department of Radiology, P. D. Hinduja Hospital and Medical Research Centre, Mumbai, India.
Background/aims: Sarcopenia is implicated in inflammatory bowel disease (IBD) complications and surgical outcomes. This study aimed to investigate the prevalence and follow-up of sarcopenia in patients with IBD.
Methods: Consecutive consenting patients with IBD aged > 18 years were included.
Biologic Therapy Is Associated With Improved Oncologic Outcomes in Crohn's Disease-Associated Colorectal Cancer.
Dis Colon Rectum
February 2025
Department of Colorectal Surgery, Digestive Disease and Surgery Institute, Cleveland Clinic, Ohio.
Background: Patients with Crohn's disease face an elevated risk of colorectal cancer, in part due to underlying chronic inflammation. Biologic therapy is the mainstay of medical treatment; however, the impact of treatment on colorectal cancer-related outcomes remains unclear.
Objective: To investigate the association between prior exposure to biologic treatment and colorectal cancer-related outcomes in patients with underlying Crohn's disease.
Incidence and Risk Factors for Nonreversal of Stoma in Patients With Crohn's Disease: A Single-Center Study.
Dis Colon Rectum
February 2025
Department of General Surgery, Jinling Medical School of Nanjing Medical University, Nanjing, China.
Background: Even in the biological era, permanent stoma is not uncommon in patients with Crohn's Disease.
Objective: This study aimed to investigate the incidence and risk factors of permanent stoma in Crohn's disease patients and provide clinical evidence for reducing this disabling outcome.
Design: Consecutive patients with Crohn's disease who underwent ostomies in the past decade were reviewed.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!