Using 16S rRNA Gene Sequencing Analysis Intestinal Microbiota in Constipation Patients

NCT02984969 | Unknown DMC

• 1 other identifier: STC-2016-16sRNA
• Study Type: observational
• Target: 20
• Locations: 1 country
• Sites: 1

Brief Summary

Constipation is a frequent, chronic gastroenterological problem that has many varied symptoms and thus has several clinical definitions. According to the Rome III criteria for chronic constipation, almost 16% of all adults are affected by chronic constipation worldwide, and it is more prevalent and symptomatic in women and elderly people. Slow transit constipation (STC) is the major category and is characterized by a decreased rate of colonic transit. Recently, many researchers have focused on the relationship between intestinal microbiota and constipation and have demonstrated that intestinal microbiota contribute to the pathophysiology of functional gastrointestinal disorders. Thus, there is a need for an improved understanding of gut microbiota composition in constipation patients and for the potential role played by the gut microbiota in the etiology of STC.To achieve this goal the investigators characterized and compared the intestinal microbiota among carefully selected patients with constipation that were clinically categorized based on Rome III criteria, and healthy controls using high throughput pyrosequencing of the 16S rRNA gene and a conservative approach to detect quantitative changes in the relative abundances of taxa.

Conditions

Slow Transit Constipation

Outcome Measures

Primary Outcomes (1)

• Fecal microbiota sequence

  The fecal samples and isolated microbiota samples were frozen immediately and underwent DNA extraction using standard methods at BGI-Shenzhen

  Within a week after enroll

Secondary Outcomes (1)

• Stool short-chain fatty acids (SCFAs)

  Within a week after enroll

Study Arms (2)

Slow transit constipation

subjects met the Rome III criteria for STC

Healthy subjects

Healthy controls

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

A total of 18 subjects met the Rome III criteria for STC and 17 healthy controls were recruit from Jinling Hospital, a teaching hospital of Nanjing University

You may qualify if:

• Chronic constipation according to Rome III criteria, defined as two or fewer spontaneous, complete bowel movements (SCBMs) per week for a minimum of 6 months;
• Age \> 18 years;
• BMI: 18.5-25 kg/m2;
• Slow colonic transit confirmed by colonic transit test (colonic transit time (CTT) \> 48 hours);
• Normal anorectal manometry, with no evidence of dyssynergia and confirmed ability to expel rectal balloon;
• No radiographic evidence of functional (i.e. pelvic floor dyssynergia) or anatomical (i.e. significant rectocele and intussusception) impediment to the expulsion of the radio-opaque contrast;
• Disease duration \> 1 year;
• Traditional treatment with dietary modification, laxatives (including osmotic and stimulant laxatives), and biofeedback tried over the past 6 months without success;

You may not qualify if:

• Bowel constipation due to innate factor (i.e. megacolon) or secondary interventions (i.e. drugs, endocrine, metabolic, neurologic or psychologic disorders);
• History or evidence of gastrointestinal diseases (i.e. obstruction, cancer, inflammatory bowel diseases) ;
• Previous abdominal surgery, except cholecystectomy, appendicectomy, tubal ligation and cesarean section;
• Previous proctological or perianal surgery;
• A constipation condition meeting the Rome III criteria for IBS or functional abdominal pain syndrome;
• Pregnant or breast-feeding women;
• Infection with enteric pathogen;
• Usage of probiotics, prebiotics and/or synbiotics within the last month;
• Usage of antibiotics and/or PPIs within the last 3 months;
• Smoking or alcohol addiction within the last 3 months;

Sponsors & Collaborators

• Jinling Hospital, China: lead

Study Sites (1)

Department of Generay Surgery, Jinling hosptal, Medical School of Nanjing University

Nanjing, Jiangsu, 210000, China

RECRUITING

Related Publications (1)

• Tian H, Chen Q, Yang B, Qin H, Li N. Analysis of Gut Microbiome and Metabolite Characteristics in Patients with Slow Transit Constipation. Dig Dis Sci. 2021 Sep;66(9):3026-3035. doi: 10.1007/s10620-020-06500-2. Epub 2020 Aug 7.

  PMID: 32767153 DERIVED

Study Officials

• Hongliang Tian

  Department of Generay Surgery, Jinling hosptal, Medical School of Nanjing University

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Jianfeng Gong, PhD

CONTACT

+86-25-80860036; jinlingh_gongjf@126.com

Ning Li

CONTACT

+86-25-80860089; jinlingh_lining@126.com

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: PhD

Study Record Dates

• First Submitted: November 20, 2016
• First Posted: December 7, 2016
• Study Start: July 1, 2016
• Primary Completion: November 1, 2016
• Study Completion: February 1, 2017
• Last Updated: December 7, 2016

Record last verified: 2016-12

Locations

CN (1)