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The Impact of Proton Pump Inhibitors on the Fecal Microbiome

The Impact of Proton Pump Inhibitors on the Fecal Microbiome and Their Relationship to Clostridium Difficile Infection

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01822977
Enrollment
15
Registered
2013-04-04
Start date
2013-03-31
Completion date
2013-12-31
Last updated
2014-08-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Clostridium Difficile Infection, Healthy

Keywords

gut microbiota, proton pump inhibitor, Clostridium difficile infection, Fecal microbiome, single episode of CDI

Brief summary

The investigators hypothesis is that daily use of a proton pump inhibitor (PPI) is associated with significant alterations in the healthy fecal microbiome that are similar to those seen in persons with an initial episode of clostridium difficile infection (CDI).

Interventions

DRUGomeprazole

Sponsors

Mayo Clinic
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

Table 1. Inclusion Criteria for Healthy Volunteers: 1\. Healthy individuals without chronic gastrointestinal problems or using antisecretory medications. Table 2. Inclusion Criteria for Clostridium difficile infection subjects: 1\. Newly diagnosed first episode of CDI prior to being treated. Table 3.

Exclusion criteria

for Healthy Subjects: 1. Prior gastrointestinal surgery that has altered the anatomy of the esophagus, stomach, or small/large intestine including appendectomy and cholecystectomy. 2. Chronic daily use of any medications that could alter gastrointestinal secretory or motor function (see Table 2). 3. Gastrointestinal, cardiovascular, endocrine, renal, or other chronic disease likely to affect gastrointestinal motility (e.g., uncontrolled diabetes mellitus). 4. Females of childbearing age who are not practicing at least one form of birth control at least one month prior to starting the PPI or are pregnant or lactating (a pregnancy test will be performed on female subjects prior to PPI use). 5. Significant untreated psychiatric disease. Table 4. Prohibited Medications: 1. Antibiotics within 2 months of the stool sample collection. 2. Probiotics (e.g., Florastor, Align, Flora-Q, VSL#3, lactobacillus, bifidobacterium) within 2 weeks of the stool sample collection. 3. Fiber supplements (e.g., Metamucil, Citrucel, Benefiber), unless maintained on a stable dose for the last 3 months. 4. Chronic use of medications that alter gastric pH: proton pump inhibitors (e.g., omeprazole, lansoprazole, esomeprazole, pantoprazole, rabeprazole, dexlansoprazole) and histamine2 receptor antagonists (e.g., cimetidine, famotidine, ranitidine). 5. Chronic use of medications that affect gastrointestinal motility and/or transit including prokinetic agents (e.g., metoclopramide (Reglan), tegaserod (Zelnorm), domperidone (Motilium), erythromycin), narcotic analgesic agents (e.g., methadone, fentanyl, oxycodone, codeine, morphine, hydromorphone), laxatives including mineral oil, anticholinergic agents (e.g., Bentyl, Levsin), and antidiarrheal agents (e.g., Kaopectate (donnagel), Pepto-Bismol (bismuth subsalicylate), Imodium (loperamide), Lomotil (atropine with diphenoxylate), codeine, tincture of opium).

Design outcomes

Primary

MeasureTime frame
Changes in fecal microbial diversity due to PPI therapy2 months

Secondary

MeasureTime frame
Changes in fecal microbial diversity due to CDI2 months

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026