Effects of Adding Chickpeas to the American Diet on Fecal Microbiota Composition and Markers of Inflammation

This prospective study will assess the effects of adding legumes, especially chick peas, to the diet of healthy adults on the commensal bacteria from feces of human subjects and resulting self-reported GI symptoms as well as markers of immune function.

Study Overview

• Status: Completed
• Conditions: Inflammation
• Intervention / Treatment: Other: Chickpea Enhanced Diet (Short term)

Detailed Description

Short-term active feeding study:

The investigators will provide various chickpea products to participants for a 14 day chickpea enhanced diet. Subjects will receive specific meal plan instructions for the consumption of 5 servings/week of chickpeas. Chickpea products will be sourced from commercial providers. While participants will be told to substitute chickpea products for other diet ingredients, the subjects will be free to choose what to substitute according to their preferences. Subjects will keep daily food records and will be told that chickpea consumption will be monitored in their fecal samples (qPCR). Fecal samples will be collected before the start (Day 1), during (Day 7-9) and at the end (Day 14) of the intervention using a stool collection kit (Sigma). Participants will complete our GI health questionnaire on a weekly basis to determine tolerance to increased chickpea intake. An open ended questionnaire will be administered after participants have completed the short-term study protocol to assess any issues with compliance to chickpea intake. All individuals that increased their chickpea intake from their usual diet by at least 3 servings/week will be included in the analysis.

• Study Type: Interventional
• Enrollment (Actual): 13
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • Florida
    • Gainesville, Florida, United States, 32608
      • Emerging Pathogens Institiute

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 75 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Good Health
• No systemic antibiotics during the preceding two months
• No medication suppressing immune function
• Willingness to provide basic demographic as well as medical history data

Exclusion Criteria:

• Gastric Ulcers
• Inflammatory Bowel Disease (IBD) or Irritable Bowel Syndrome (IBS)
• Chronic constipation/diarrhea
• Body Mass Index (BMI) > 30
• Dietary restrictions that prevent legume intake
• Currently on any medication that can affect GI transit time
• Consumption of >3 servings/week of chickpeas or >6 servings/week of legumes BEFORE study begins

Study Plan

How is the study designed?

Design Details

• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Chickpea Enhanced Diet; Fed an enhanced Chickpea diet over a short term period (Chickpea Enhanced Diet Short Term)	Other: Chickpea Enhanced Diet (Short term); Dry Roasted Chickpeas, 21.26 gram serving size bags, by mouth five times per week. Stool Samples collected at Day 1, Day 9, and Day 14.; Other Names: Go'Bonzo's

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Changes in Diversity of Gut Microbiota 16S rRNA Gene Sequences With Regard to Time.	Compare the gut microbiota composition and overall diversity of individual subjects before and after the implementation of a controlled and observed diet of chickpeas and legume products, using 16S ribosomal RNA (rRNA) sequencing of fecal samples. The use of Operational Taxonomic Units (OTUs) are used to classify clusters of similar bacterial groups. OTUs are species or group of species often used when only DNA sequence data is available. This measure is the average amount of OTUs found for each time point.	Change in Baseline (Day 1, Day 7-9, and Day 14)

Collaborators and Investigators

• Sponsor: University of Florida
• Collaborators: American Pulse Association
• Investigators: Principal Investigator: Volker Mai, PhD, MPH, Associate Professor

Study record dates

Study Major Dates

• Study Start: March 1, 2015
• Primary Completion (Actual): August 1, 2015
• Study Completion (Actual): August 1, 2015

Study Registration Dates

• First Submitted: February 24, 2015
• First Submitted That Met QC Criteria: February 24, 2015
• First Posted (Estimate): March 2, 2015

Study Record Updates

• Last Update Posted (Estimate): May 30, 2016
• Last Update Submitted That Met QC Criteria: May 24, 2016
• Last Verified: May 1, 2016

More Information

Terms related to this study

• Keywords: Gut Microbiota
• Additional Relevant MeSH Terms: Pathologic Processes; Inflammation
• Other Study ID Numbers: 201400716