Effects of Mouthrinse on the Microbiome of the Oral Cavity and GI Tract

Not Applicable

Recruiting

• Conditions: Microbial Colonization; Viral Infection; Oral Bacterial Infection; Oral Infection
• Interventions: Other: Lumineux Oral Essentials rinse; Other: Listerine rinse

• Registration Number: NCT05603650
• Lead Sponsor: University of California, Irvine

Brief Summary

The purpose of this research study is to identify the effects of 2 over-the-counter mouthwashes on bacteria and 3 viruses in the participant's mouth and gut. The participant will be randomly allocated to rinse their mouth twice daily either with Listerine mouthwash, Lumineux Oral Essentials mouthwash, or water. The overall duration of the study will be approximately 180 days and will include approximately 5 visits and 15-30 minutes for each visit with a total of approximately 2.5 hours of your time. Additionally, fecal matter will also be collected in some subjects using a commercial collection kit.

Detailed Description

Goal of this pilot study is to identify the effects of 2 over-the-counter mouthrinses on the microbiome of the oral cavity and the GI tract. We will investigate 2 mouthwashes, plus an additional non-treatment group (water rinse only). One mouthwash has antimicrobial activity (ListerineR, Johnson \& Johnson Consumer Healthcare Products, Skillman, New Jersey); the other targets microbial products only (Lumineux Oral Essentials Clean and Fresh MouthwashR, Los Angeles, CA). Oral plaque will be collected with a sterile swab using a commercial collection kit on Day 0, Day 30, Day 60, Day 90, and Day 180 of the study. Additionally, fecal matter will also be collected in some subjects using a commercial collection kit. Subjects will rinse 2x daily for approximately 180 days using either mouthwash or water.

Study Timeline

• Study Start: 2021-09-01
• Study First Submitted: 2022-09-12
• Study First Submitted QC: 2022-10-27
• Study First Posted: 2022-11-03
• Status Verified: 2025-01
• Last Update Submitted: 2025-01-14
• Last Update Posted: 2025-01-16
• Primary Completion: 2027-12
• Study Completion: 2027-12

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 200

Inclusion Criteria

• Eligible men and non-pregnant and non-lactating women of all races age 18-25.
• Volunteers must consent to participate in all scheduled exam visits and procedures.
• Volunteers must be available for follow up on the telephone.
• Healthy gums or gums that bleed when you brush them.

Exclusion Criteria

• Volunteers unable or unwilling to sign the informed consent form.
• Less than 20 teeth (excluding third molars).
• Individuals who have taken antibiotics in the previous 3 months.
• Presence of any condition, abnormality, or situation at Baseline that in the opinion of the Principal Investigator may preclude the volunteer's ability to comply with study requirements, including completion of the study or the quality of the data.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Water rinse	Lumineux Oral Essentials rinse	rinse twice daily for 1 min with water
Water rinse	Listerine rinse	rinse twice daily for 1 min with water
Listerine rinse	Lumineux Oral Essentials rinse	rinse twice daily for 1 min with Listerine rinse
Lumineux Oral Essentials rinse	Listerine rinse	rinse twice daily for 1 min with Lumineux Oral Essentials rinse

Primary Outcome Measures

Name	Time	Method
viral load and mRNA analysis using RT-PCR	Day 180	viral load: HSV1, CMV, EBV
total bacterial load and mRNA analysis	Day 180	total bacterial load as determined from oral swabs and collected fecal samples, followed by subsequent standard mRNA analysis using RT-PCR

Trial Locations

Locations (1)

Beckman Laser Institute and Medical Clinic; 🇺🇸 Irvine, California, United States