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Problem: Endometritis is an inflammatory disorder often associated with microbial imbalance. Common treatments, such as antibiotics, may lead to drug resistance and do not ensure long-term microbial stability.
Method Of Study: This mini review examines vaginal microbiota transplantation (VMT) as a novel approach to the management of endometritis. VMT involves the transfer of healthy microbiota from a donor to restore microbial balance in the recipient.
Results: VMT helps maintain vaginal acidity and inhibit pathogenic bacteria by restoring the dominant Lactobacillus spp. One of its key mechanisms is inhibiting the NF-κB signaling pathway, which leads to a decrease in inflammatory cytokines such as IL-6, IL-1β, and TNF-α. This reduces tissue inflammation and improves healing. VMT is also more biocompatible than antibiotics and can be more effective in combination with other treatments.
Conclusions: VMT is a promising noninvasive approach to the treatment of endometritis, with safety and microbial benefits. However, further studies and standardization of methods are needed to confirm its clinical utility.
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http://dx.doi.org/10.1111/aji.70104 | DOI Listing |
Gut Microbes
December 2025
Clinical Microbiome Unit, Laboratory of Host Immunity and Microbiome, Division of Intramural Research, National Institute of Allergy and Infectious Disease, National Institute of Health, Bethesda, MD, USA.
Parity, the number of pregnancies carried beyond 20 weeks, influences the maternal gut microbiome. However, whether parity modulates the infant microbiome longitudinally remains underexplored. To address this, 746 infants in a longitudinal cohort study were assessed.
View Article and Find Full Text PDFReprod Biomed Online
May 2025
Materno-fetal and Obstetrics Research Unit, Department Woman-Mother-Child, University Hospital of Lausanne, Lausanne, Switzerland; Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland. Electronic address:
Research Question: What is the composition of bacterial communities at various genital sites and are there potential interactions between partners' microbiota?
Design: This observational study involved metagenomic analyses of samples collected from male and female partners of couples undergoing fertility treatment. Samples included vaginal and penile swabs, as well as follicular fluid and semen, which were analysed using next-generation sequencing.
Results: The bacterial community profiles of different genital tract niches were distinct, niche-specific compositions, with female samples predominantly featuring Lactobacillus species and male samples displaying greater microbial diversity, including genital-specific and skin-associated taxa.
J Nutr
September 2025
Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine (CNRGH), 91057 Evry, France. Electronic address:
Background: Breast milk represents the optimal feeding strategy for newborns, supporting not only nutrition but also the establishment of a unique microbiota. The bacterial composition and diversity of this microbiota are shaped by various maternal and infant-related factors.
Objectives: This single-center prospective study aimed to examine the breast milk microbiota and determine the maternal and infant-related factors influencing its composition and diversity over the time.
Although bacterial vaginosis (BV) affects 30% of women worldwide and is associated with adverse health outcomes, current standard-of-care antibiotics fail in over half of cases and treatments have not improved in over 40 years. Probiotics have been proposed as alternative treatments, but fail to restore an optimal lactobacilli-dominated microbiome in the vast majority of patients. Here, we present findings from a pilot clinical trial demonstrating the successful engraftment of vaginal microbiota transplantations (VMTs) after antibiotic treatment in individuals with recurrent BV.
View Article and Find Full Text PDFBiology (Basel)
August 2025
Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland.
species play a fundamental role in maintaining a healthy vaginal microbiota and have been increasingly recognized for their protective effects against high-risk human papillomavirus (HR-HPV) infection and the progression of cervical intraepithelial neoplasia (CIN). These beneficial bacteria contribute to host defense through multiple mechanisms, including the production of lactic acid that sustains a low vaginal pH, enhancement of epithelial barrier integrity via E-cadherin regulation, and modulation of immune signaling pathways such as interferon responses and NF-κB activity. strains exert anti-inflammatory effects by downregulating pro-inflammatory cytokines and interfering with oncogenic pathways including Wnt/β-catenin and the expression of HPV E6 and E7 proteins.
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