The cervical microbiota in reproductive-age South African women with and without human papillomavirus infectionOriginal paper
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.
Read MoreWhat was studied?
Researchers examined whether HPV infection is associated with distinct cervical microbiota composition. The cohort was 87 HIV-seronegative, reproductive-age Black South African women, 37 of whom had prevalent HPV and 30 had high-risk HPV.
How was it studied?
Cervical samples were profiled by Illumina sequencing of the V3-V4 region of the bacterial 16S rRNA gene. Relative abundances were compared across HPV status groups using LEfSe (LDA score) with FDR correction.
What did they find?
Only 23 women (26.4 percent) had a single Lactobacillus species dominant, mostly L. iners (19/87); most women (64.4 percent) had diverse, bacterial vaginosis associated microbiota. Women with high-risk HPV had significantly higher Aerococcaceae, Pseudomonadaceae and Bifidobacteriaceae than those with low-risk or no HPV (LDA score greater than 2.0, p less than 0.05, q less than 0.2). Gardnerella, Sneathia and Atopobium were also enriched in high-risk HPV women, though this did not survive FDR correction.
Why it matters
The findings suggest specific bacterial taxa may track with high-risk HPV infection in this population, but the authors note further investigation is warranted before drawing causal conclusions.