Sialidase Activity in the Cervicovaginal Fluid Is Associated With Changes in Bacterial Components of Lactobacillus-Deprived Microbiota

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal do Paraná (UFPR)-
Autor(es): dc.contributorUniversity of Maryland School of Medicine-
Autor(es): dc.creatorFerreira, Carolina Sanitá Tafner-
Autor(es): dc.creatorMarconi, Camila-
Autor(es): dc.creatorParada, Cristina M. G. L.-
Autor(es): dc.creatorRavel, Jacques-
Autor(es): dc.creatorSilva, Marcia Guimaraes da-
Data de aceite: dc.date.accessioned2025-08-21T20:03:22Z-
Data de disponibilização: dc.date.available2025-08-21T20:03:22Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-01-12-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3389/fcimb.2021.813520-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/230300-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/230300-
Descrição: dc.descriptionIntroduction: Sialidase activity in the cervicovaginal fluid (CVF) is associated with microscopic findings of bacterial vaginosis (BV). Sequencing of bacterial 16S rRNA gene in vaginal samples has revealed that the majority of microscopic BV cases fit into vaginal community-state type IV (CST IV), which was recently named “molecular-BV.” Bacterial vaginosis-associated bacterial species, such as Gardnerella spp., may act as sources of CVF sialidases. These hydrolases lead to impairment of local immunity and enable bacterial adhesion to epithelial and biofilm formation. However, the impact of CVL sialidase on microbiota components and diversity remains unknown. Objective: To assess if CVF sialidase activity is associated with changes in bacterial components of CST IV. Methods: One hundred forty women were cross-sectionally enrolled. The presence of molecular-BV (CST IV) was assessed by V3–V4 16S rRNA sequencing (Illumina). Fluorometric assays were performed using 2-(4-methylumbelliferyl)-α-D-N-acetylneuraminic acid (MUAN) for measuring sialidase activity in CVF samples. Linear discriminant analysis effect size (LEfSe) was performed to identify the differently enriched bacterial taxa in molecular-BV according to the status of CVF sialidase activity. Results: Forty-four participants (31.4%) had molecular-BV, of which 30 (68.2%) had sialidase activity at detectable levels. A total of 24 bacterial taxa were enriched in the presence of sialidase activity, while just two taxa were enriched in sialidase-negative samples. Conclusion: Sialidase activity in molecular-BV is associated with changes in bacterial components of the local microbiome. This association should be further investigated, since it may result in diminished local defenses against pathogens.-
Descrição: dc.descriptionDepartment of Pathology Botucatu Medical School Sao Paulo State University (UNESP)-
Descrição: dc.descriptionDepartment of Basic Pathology Sector of Biological Sciences Federal University of Paraná (UFPR)-
Descrição: dc.descriptionDepartment of Nursing Botucatu Medical School Sao Paulo State University (UNESP)-
Descrição: dc.descriptionInstitute of Genomic Science University of Maryland School of Medicine-
Descrição: dc.descriptionDepartment of Pathology Botucatu Medical School Sao Paulo State University (UNESP)-
Descrição: dc.descriptionDepartment of Nursing Botucatu Medical School Sao Paulo State University (UNESP)-
Idioma: dc.languageen-
Relação: dc.relationFrontiers in Cellular and Infection Microbiology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subject16S rRNA-
Palavras-chave: dc.subjectbacterial vaginosis-
Palavras-chave: dc.subjectGardnerella-
Palavras-chave: dc.subjectsialidases-
Palavras-chave: dc.subjectvaginal microbiota-
Título: dc.titleSialidase Activity in the Cervicovaginal Fluid Is Associated With Changes in Bacterial Components of Lactobacillus-Deprived Microbiota-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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