Microbiota composition and distribution along the female reproductive tract of women with endometriosis

March 18, 2025

  • Microbes
    Microbes

    Microbes, short for microorganisms, are tiny living organisms that are ubiquitous in the environment, including on and inside the human body. They play a crucial role in human health and disease, functioning within complex ecosystems in various parts of the body, such as the skin, mouth, gut, and respiratory tract. The human microbiome, which is […]

  • Women’s Health
    Women’s Health

    Women’s health, a vital aspect of medical science, encompasses various conditions unique to women’s physiological makeup. Historically, women were often excluded from clinical research, leading to a gap in understanding the intricacies of women’s health needs. However, recent advancements have highlighted the significant role that the microbiome plays in these conditions, offering new insights and potential therapies. MicrobiomeSignatures.com is at the forefront of exploring the microbiome signature of each of these conditions to unravel the etiology of these diseases and develop targeted microbiome therapies.

Last Updated: 2024

Microbiome Signatures identifies and validates condition-specific microbiome shifts and interventions to accelerate clinical translation. Our multidisciplinary team supports clinicians, researchers, and innovators in turning microbiome science into actionable medicine.

Karen Pendergrass

Karen Pendergrass is a microbiome researcher specializing in microbiome-targeted interventions (MBTIs). She systematically analyzes scientific literature to identify microbial patterns, develop hypotheses, and validate interventions. As the founder of the Microbiome Signatures Database, she bridges microbiome research with clinical practice. In 2012, based on her own investigative research, she became the first documented case of FMT for Celiac Disease—four years before the first published case study.

What was studied?

The study investigated the microbiota distribution across the entire female reproductive tract of endometriosis (EMS) patients and non-EMS women, aiming to identify EMS-specific bacterial species and examine the relationship between flora and disease development.

 

Who was studied?

Fifty women undergoing laparoscopic surgery for benign gynecological diseases or pelvic endometriosis at Peking University Shenzhen Hospital were studied. They were divided into two groups: 36 with pelvic endometriosis (stages I-IV) and 14 controls without endometriosis symptoms.

 

What were the most important findings?

Significant differences in the microbiota distribution were observed, especially a decrease in Lactobacillus in the upper reproductive tract of EMS patients. Specific Operational Taxonomic Units (OTUs), particularly Sphingobium sp. and Pseudomonas viridiflava, were identified as significantly enriched in the endometrium and peritoneal fluid of EMS patients, suggesting their potential role in EMS pathogenesis.

 

What are the greatest implications of this study?

The study offers a new perspective on the pathogenesis of endometriosis, emphasizing the role of specific bacteria in its development. Identifying microbiota changes associated with EMS could lead to novel diagnostic markers and therapeutic targets, enhancing our understanding of the disease and potentially leading to more effective management strategies for endometriosis and other female reproductive tract diseases.

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