Saltar al contenido principal

Escribe una PREreview

Characterization of vaginal microbiomes in clinician-collected bacterial vaginosis diagnosed samples

Publicada
Servidor
bioRxiv
DOI
10.1101/2024.10.01.616135

Bacterial vaginosis (BV) is a type of vaginal inflammation caused by bacterial overgrowth, upsetting the healthy microbiome of the vagina. Existing clinical testing for BV is primarily based upon physical and microscopic examination of vaginal secretions, while more modern PCR-based clinical tests target panels of BV-associated microbes, such as the Labcorp NuSwab test. Remnant clinician-collected NuSwab vaginal swabs underwent DNA extraction and 16S V3-V4 rRNA gene sequencing to profile microbes in addition to those included in the Labcorp NuSwab test. Community State Types (CSTs) were determined using the most abundant taxon detected in each sample. PCR results for NuSwab panel microbial targets were compared against the corresponding microbiome profiles. Metabolic pathway abundances were characterized via metagenomic prediction from amplicon sequence variants (ASVs). Sequencing of 75 remnant vaginal swabs yielded 492 unique 16S V3-V4 ASVs, identifying 83 unique genera. NuSwab assay microbe quantification was strongly concordant with quantification by sequencing (p << 0.01). Samples in CST-I (18 of 18, 100%), CST-II (3 of 3, 100%), CST-III (15 of 17, 88%), and CST-V (1 of 1, 100%) were largely categorized as BV-negative via the NuSwab panel, while most CST-IV samples (28 of 36, 78%) were BV-positive or BV-indeterminate. BV-associated microbial and predicted metabolic signatures were shared across multiple CSTs. These findings show that 16S V3-V4 rRNA gene sequencing robustly reproduces PCR-based BV diagnostic testing results, accurately discriminates vaginal microbiome CSTs dominated by distinct Lactobacilli, and further elucidates BV-associated bacterial and metabolic signatures.

Puedes escribir una PREreview de Characterization of vaginal microbiomes in clinician-collected bacterial vaginosis diagnosed samples. Una PREreview es una revisión de un preprint y puede variar desde unas pocas oraciones hasta un extenso informe, similar a un informe de revisión por pares organizado por una revista.

Antes de comenzar

Te pediremos que inicies sesión con tu ORCID iD. Si no tienes un iD, puedes crear uno.

¿Qué es un ORCID iD?

Un ORCID iD es un identificador único que te distingue de otros/as con tu mismo nombre o uno similar.

Comenzar ahora