Associations Between Dysmenorrhea Symptom-Based Phenotypes and Vaginal Microbiome: A Pilot Study

Area of Science:

• Reproductive health
• Microbiome research
• Women's health

Background:

• Dysmenorrhea (painful periods) is common and linked to other chronic pain conditions.
• Individual experiences of dysmenorrhea vary significantly in severity and symptoms.
• The role of the vaginal microbiome in dysmenorrhea is underexplored.

Purpose of the Study:

• To investigate the association between dysmenorrhea symptom phenotypes and vaginal microbiome composition.
• To compare microbiome profiles during and between menstrual periods.

Main Methods:

• A pilot study involving 20 women (aged 15-24) with defined dysmenorrhea phenotypes.
• Collection of vaginal swabs on- and off-menses over one menstrual cycle.
• 16S rRNA gene sequencing for vaginal microbiome analysis and statistical comparisons.

Main Results:

• Vaginal microbiome composition differed significantly across dysmenorrhea phenotypes.
• Differences were statistically significant when samples were collected on-menses, but not off-menses.
• The severe multiple symptoms phenotype showed lower lactobacilli and higher Prevotella, Atopobium, and Gardnerella during menses compared to mild pain phenotype.

Conclusions:

• This study provides preliminary evidence for a link between dysmenorrhea phenotypes and the vaginal microbiome.
• Findings suggest potential for microbiome-based biomarkers and therapeutic targets for dysmenorrhea.
• Further research can inform personalized treatment strategies to improve women's quality of life.