Mesenteric Bacterial Translocation in Evolved Crohn's Disease

NCT05891756 | Unknown

• 1 other identifier: MESENCROHN
• Study Type: observational
• Target: 40
• Locations: 1 country
• Sites: 1

Brief Summary

Mesenteric fat can be invaded by gut bacteria through a process called bacterial translocation, which is the invasion of viable bacteria from the gastrointestinal tract to extraintestinal sites (mesenteric lymph nodes, liver, spleen, kidney, bloodstream, etc.). In Crohn's disease (CD), bacterial translocation could increase the disproportionate inflammatory response already present and contribute to disease progression by stimulating the production of pro-inflammatory cytokines and immune-cell infiltration in the mesentery. Several mechanisms may promote bacterial translocation, such as bacterial overgrowth, disruption of the intestinal mucosal barrier and alterations in the immune system. Ileocecal surgical resection is required in some patients with complicated or refractory CD. Unfortunately, post-surgical disease recurrence happens in up to 40% of cases, probably defining a subgroup of CD patients with a particular aggressive form of the disease. The complete microbiome (in gastrointestinal and extraintestinal sites) in CD patients that develop early post-surgical recurrence, as well as the association to innate immunity alterations, has not yet been studied. The primary aim of the study is to explore the bacterial microbiome of CD patients and its association with early post-surgical recurrence and clinical or genetic variables related to innate immunity. To achieve this, the bacterial DNA present in mesenteric fat and ileal tissue (inflamed and non-inflamed) from surgical resection samples as well as blood samples from CD patients will be studied. Genetic polymorphisms, relevant clinical data and disease recurrence will also be evaluated. The investigators hypothesize that bacterial translocation to the mesentery fat near the inflamed intestine is one of the mechanisms for perpetuation and chronicity of inflammation and therefore post-surgical recurrence in CD. The investigators expect to find a distinctive bacterial profile (in quantity and quality) in the mesenteric fat of patients with early post-surgical recurrence and/or with genetic variants that cause alterations in innate immunity. The study of the microbiome in CD could help to identify the patients with a more aggressive disease form that will probably present early post-surgical recurrence, and could raise the possibility of microbial modulation as therapy for CD.

Conditions

Crohn Disease

Keywords

Crohn Disease; Mesenteric fat; Bacterial translocation; Innate immunity; Genetic polymorphisms

Outcome Measures

Primary Outcomes (2)

• Differences in the proportions and abundance of bacterial taxa (defined as total percentage of bacterial DNA sequences) between the mesentery, ileal tissue and blood between CD patients with and without early post-surgical disease recurrence

  at inclusion (surgery)

• Differences in the function of the bacterial profile (defined as the metagenome function analysis) between the mesentery, ileal tissue and blood between CD patients with and without early post-surgical disease recurrence

  at inclusion (surgery)

Secondary Outcomes (1)

• Association analysis of genetic variants related to innate immunity and the bacterial microbiome profile of CD patients

  at inclusion (surgery)

Study Arms (2)

CD patients requiring surgical treatment (ileocecal resection)

Control group

Patients requiring an ileocecal resection for a cause other than CD

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Patients from the Hospital Universitari MútuaTerrassa

You may qualify if:

• Adults (18 years or older)
• Informed consent signed
• To require an ileocecal resection as part of the treatment of Crohn's Disease
• In the case of controls: not having Inflammatory Bowel Disease and requiring an ileocecal resection for another reason

You may not qualify if:

• To require an ileocecal resection with definitive or transient ileostomy
• In the case of controls: existence of a family history of Inflammatory Bowel Disease.

Sponsors & Collaborators

• Hospital Mutua de Terrassa: lead

Study Sites (1)

Hospital Universitari MútuaTerrassa

Terrassa, Barcelona, 08221, Spain

RECRUITING

Related Publications (15)

• Schaffler A, Scholmerich J. Innate immunity and adipose tissue biology. Trends Immunol. 2010 Jun;31(6):228-35. doi: 10.1016/j.it.2010.03.001.

  PMID: 20434953 BACKGROUND

• Batra A, Heimesaat MM, Bereswill S, Fischer A, Glauben R, Kunkel D, Scheffold A, Erben U, Kuhl A, Loddenkemper C, Lehr HA, Schumann M, Schulzke JD, Zeitz M, Siegmund B. Mesenteric fat - control site for bacterial translocation in colitis? Mucosal Immunol. 2012 Sep;5(5):580-91. doi: 10.1038/mi.2012.33. Epub 2012 May 9.

  PMID: 22569302 BACKGROUND

• Bertin B, Desreumaux P, Dubuquoy L. Obesity, visceral fat and Crohn's disease. Curr Opin Clin Nutr Metab Care. 2010 Sep;13(5):574-80. doi: 10.1097/MCO.0b013e32833cf0f4.

  PMID: 20625283 BACKGROUND

• Alexander JW, Boyce ST, Babcock GF, Gianotti L, Peck MD, Dunn DL, Pyles T, Childress CP, Ash SK. The process of microbial translocation. Ann Surg. 1990 Oct;212(4):496-510; discussion 511-2. doi: 10.1097/00000658-199010000-00012.

  PMID: 2222015 BACKGROUND

• Laffineur G, Lescut D, Vincent P, Quandalle P, Wurtz A, Colombel JF. [Bacterial translocation in Crohn disease]. Gastroenterol Clin Biol. 1992;16(10):777-81. French.

  PMID: 1478405 BACKGROUND

• Zulian A, Cancello R, Micheletto G, Gentilini D, Gilardini L, Danelli P, Invitti C. Visceral adipocytes: old actors in obesity and new protagonists in Crohn's disease? Gut. 2012 Jan;61(1):86-94. doi: 10.1136/gutjnl-2011-300391. Epub 2011 Sep 19.

  PMID: 21930728 BACKGROUND

• Shi H, Kokoeva MV, Inouye K, Tzameli I, Yin H, Flier JS. TLR4 links innate immunity and fatty acid-induced insulin resistance. J Clin Invest. 2006 Nov;116(11):3015-25. doi: 10.1172/JCI28898. Epub 2006 Oct 19.

  PMID: 17053832 BACKGROUND

• Siegmund B. Mesenteric fat in Crohn's disease: the hot spot of inflammation? Gut. 2012 Jan;61(1):3-5. doi: 10.1136/gutjnl-2011-301354. Epub 2011 Nov 7. No abstract available.

  PMID: 22068165 BACKGROUND

• Sokol H, Brot L, Stefanescu C, Auzolle C, Barnich N, Buisson A, Fumery M, Pariente B, Le Bourhis L, Treton X, Nancey S, Allez M, Seksik P; REMIND Study Group Investigators. Prominence of ileal mucosa-associated microbiota to predict postoperative endoscopic recurrence in Crohn's disease. Gut. 2020 Mar;69(3):462-472. doi: 10.1136/gutjnl-2019-318719. Epub 2019 May 29.

  PMID: 31142586 BACKGROUND

• Domenech E, Manosa M, Bernal I, Garcia-Planella E, Cabre E, Pinol M, Lorenzo-Zuniga V, Boix J, Gassull MA. Impact of azathioprine on the prevention of postoperative Crohn's disease recurrence: results of a prospective, observational, long-term follow-up study. Inflamm Bowel Dis. 2008 Apr;14(4):508-13. doi: 10.1002/ibd.20359.

  PMID: 18183602 BACKGROUND

• Gutierrez A, Scharl M, Sempere L, Holler E, Zapater P, Almenta I, Gonzalez-Navajas JM, Such J, Wiest R, Rogler G, Frances R. Genetic susceptibility to increased bacterial translocation influences the response to biological therapy in patients with Crohn's disease. Gut. 2014 Feb;63(2):272-80. doi: 10.1136/gutjnl-2012-303557. Epub 2013 Feb 1.

  PMID: 23376290 BACKGROUND

• Li Y, Zuo L, Zhu W, Gong J, Zhang W, Gu L, Guo Z, Li N, Li J. The impact of bacterial DNA translocation on early postoperative outcomes in Crohn's patients undergoing abdominal surgery. J Crohns Colitis. 2015 Mar;9(3):259-65. doi: 10.1093/ecco-jcc/jju029. Epub 2015 Jan 2.

  PMID: 25555386 BACKGROUND

• Takesue Y, Ohge H, Uemura K, Imamura Y, Murakami Y, Yokoyama T, Kakehashi M, Sueda T. Bacterial translocation in patients with Crohn's disease undergoing surgery. Dis Colon Rectum. 2002 Dec;45(12):1665-71. doi: 10.1007/s10350-004-7256-z.

  PMID: 12473892 BACKGROUND

• Kosovac K, Brenmoehl J, Holler E, Falk W, Schoelmerich J, Hausmann M, Rogler G. Association of the NOD2 genotype with bacterial translocation via altered cell-cell contacts in Crohn's disease patients. Inflamm Bowel Dis. 2010 Aug;16(8):1311-21. doi: 10.1002/ibd.21223.

  PMID: 20232407 BACKGROUND

• Kiernan MG, Coffey JC, McDermott K, Cotter PD, Cabrera-Rubio R, Kiely PA, Dunne CP. The Human Mesenteric Lymph Node Microbiome Differentiates Between Crohn's Disease and Ulcerative Colitis. J Crohns Colitis. 2019 Jan 1;13(1):58-66. doi: 10.1093/ecco-jcc/jjy136.

  PMID: 30239655 BACKGROUND

Biospecimen

Retention: SAMPLES WITH DNA

Mesenteric fat, ileal tissue and whole blood

MeSH Terms

Conditions

Crohn Disease

Condition Hierarchy (Ancestors)

Inflammatory Bowel Diseases; Gastroenteritis; Gastrointestinal Diseases; Digestive System Diseases; Intestinal Diseases

Central Study Contacts

Yamile Zabana, MD, PhD

CONTACT

yzabana@gmail.com

Study Design

• Study Type: observational
• Observational Model: CASE CONTROL
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 11, 2023
• First Posted: June 7, 2023
• Study Start: July 1, 2022
• Primary Completion: July 1, 2024
• Study Completion: December 1, 2025
• Last Updated: June 22, 2023

Record last verified: 2023-06

Locations

ES (1)