The Use of Probiotics in Patients With Symptomatic Oral Lichen Planus

December 10, 2015 updated by: Mette Kirstine Keller, University of Copenhagen

The aim is to investigate the effect of probiotic bacteria on symptoms and clinical manifestations in patients with oral lichen planus (OLP).

The hypothesis is that probiotic bacteria can favor an oral environment that reduces the risk of symptomatic candidal and bacterial infection in OLP.

The negative influence of improper oral hygiene on OLP is established and overgrowth of Candida is a common problem. Nystatin is the only topical antifungal that does not interact with other drugs and to which the majority of the candida species are susceptible. Symptomatic treatment with fluocinolone is initiated in patients without candidal infection. Probiotic bacteria can affect the microbial homeostasis by reducing the overgrowth of pathogens e.g. candida. Different probiotic species have been shown to produce antifungal substances and reduce the growth of candida albicans in vitro. The probiotic strain Lactobacillus rhamnosus has been found to reduce the salivary count of yeasts among elderly in a randomized clinical study.

The study is planned as a blinded, randomized controlled study with four parallel arms. 120 OLP patients with symptoms form the mucous membranes are included in the study and will receive nystatin or fluocinolone treatment depending on positive or negative diagnosis of candidosis. In addition, they will be assigned to either the probiotic (A) or the placebo group (B) by randomization. The groups will be encouraged to take three tablets per day (morning, noon and evening)for eight weeks. The lozenges containseither two strains of the probiotic bacterium L. reuteri (A) or placebo (B). Cytosmears, saliva sample, and saline mouth wash will be taken at baseline, after the treatment period and at follow-up visits at 8, 16, 24 weeks and 1 year. Salivary counts of the probiotic strains, the clinical manifestations and symptoms associated to OLP will be recorded.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

25

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Denmark
      • Copenhagen, Denmark, 2100
        • University of Copenhagen

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Symptomatic Oral Lichen Planus

Exclusion Criteria:

  • Antibiotic treatment within 3 months

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: fluocinolone, placebo
Drug: fluocinolone
Experimental: fluocinolone, probiotic
fluocinolone, Probiotic lactobacilli reuteri
Drug: fluocinolone
Biological: Probiotic lactobacilli reuteri
Other Names:
  • L. reuteri (DSM 17938 og ATCC PTA 5289) two times a day
Active Comparator: Nystatin, placebo
Drug: Nystatin
Experimental: nystatin, probiotic
nystatin, Probiotic lactobacilli reuteri
Drug: Nystatin
Biological: Probiotic lactobacilli reuteri
Other Names:
  • L. reuteri (DSM 17938 og ATCC PTA 5289) two times a day

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
recurrence of candida infections
Time Frame: after 1 year
after 1 year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Copenhagen

Investigators

  • Principal Investigator: Mette K Keller, PhD, University of Copenhagen

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2012

Primary Completion (Actual)

December 1, 2015

Study Completion (Actual)

December 1, 2015

Study Registration Dates

First Submitted

November 28, 2012

First Submitted That Met QC Criteria

December 5, 2012

First Posted (Estimate)

December 6, 2012

Study Record Updates

Last Update Posted (Estimate)

December 11, 2015

Last Update Submitted That Met QC Criteria

December 10, 2015

Last Verified

December 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • H-4-2011-143

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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