Clinical Drug Experience Knowledgebase

A Double-Blind,Randomized Placebo-Controlled Study Using Probiotic Lactobacillus GR-1 and RC-14 as an Adjunctive Therapy to Fluconazole in the Treatment of Yeast Vaginitis

STUDY HYPOTHESIS The administration of two well documented strains of lactobacilli (L.rhamnosis GR-1 and L.reuteri RC-14 ) given to women with recurrent yeast vaginitis, following standard therapy with fluconazole and compared with placebo will result in a significant reduction in recurrence rate of the disease.

Methodology

Study participants

Inclusion criteria:

Premenopausal women suffering from acute or chronic yeast vaginitis and a past history of 3 or 4 episodes over the 12 months will be selected.
All participants must be symptomatic, i.e. the participant must have identified herself as suffering from one or more of the following: abnormal/odourless vaginal discharge, dyspareunia or dysuria, localized irritation or discomfort around the vagina.

Exclusion criteria:

Participants must not be suffering from other urogenital infections or conditions such as HIV that will potentially alter their response to disease. Participants will be tested and excluded for the presence of Trichomonas vaginalis and Bacterial vaginosis at inclusion. Other conditions will be ruled out on the basis of medical history and clinical assessment.
Participants must not be pregnant.
Participants must not be younger than 18 or older than 50 years.
Participants must not be menstruating during diagnosis or treatment

Laboratory Diagnosis:

Microscopic examination of vaginal secretion in 10% KOH for hyphae and mycelia Culture for fungal agent using Sabbraoud agar/broth.

Randomisation:

• Participants randomised for age, history of previous (past year) yeast vaginitis.

Treatment Protocol 100 premenopausal women presenting with acute yeast vaginitis and a past history of 3 or 4 episodes of yeast vaginitis over the past 12 months will be treated with one oral dose of Fluconazole (Diflucan), then randomized into 2 groups:

Group A: Receiving one oral dose of Fluconazole + oral placebo capsules for 3 months.
Group B: Receiving one oral dose of Fluconazole + capsules of L. rhamnosus GR-1 and L reuteri RC-14 containing 5 billion live organisms for 3 months.

Both groups of patients will be followed at 7days for proof of cure, 1 month, 2 months and 3 months following enrolment.

At all follow-up visits, the patients will be checked for symptoms and examined physically. Vaginal swabs will be tested for fungi microscopically and by culture, and BV organisms using Nugent scoring or with BV Blue test kit for vaginal sialidase.

Data to be collected

Symptoms:

Lifestyle questionnaire, to include daily self-assessment of presence and severity of condition (discharge, irritation,) for the first 7 days. To include self-determined definition of when recovery begins and when it is complete. Also include menstrual cycle information (during the treatment, is the subject in early, mid or late cycle?).
Physician assessment at each visit.

Vaginal swabs - two per visit:

Day 0 (before treatment)

Day 7 (Proof of cure for the two groups).

1 month after treatment
2 months after treatment
3 months after treatment.

Statistical Analysis

In the placebo group of patients, it is anticipated that at the 3 month period, a recurrence rate of 50% will occur, whereas, in the treatment arm a reduction in recurrence to 25% will be achieved. The study is designed to have a power of 80% and to detect a reduction in recurrence at two-sided 5% significance level.

Participants Recruitment:

Subjects will be recruited from the women attending urogenital tract infection clinics at Faith Mediplex, Benin City.

Risk No risks are expected except the usual adverse effects associated with Fluconazole, otherwise probiotic lactobacilli are generally regarded as safe (GRAS) and no known side effects have been attributed to probiotic lactobacilli in immunocompetent individuals.

Benefits There may be benefits accruing from the probiotic arm of the study as recurrence rate may be low than the placebo. Also there may not be any direct benefit, but information gathered will help us in evaluating whether oral use of probiotics could be practically applicable in our environment against vaginal yeast infections.