Network-Based Differences in the Vaginal and Bladder Microbial Communities Between Women With and Without Urgency Urinary Incontinence.

Autor:	Nardos R; Division of Urogynecology, Oregon Health and Science University, Portland, OR, United States.; Division of Female Pelvic Medicine and Reconstructive Surgery, University of Minnesota, Minneapolis, MN, United States., Leung ET; Division of Bioinformatics and Computational Biomedicine, Oregon Health and Science University, Portland, OR, United States., Dahl EM; Division of Bioinformatics and Computational Biomedicine, Oregon Health and Science University, Portland, OR, United States., Davin S; Division of Arthritis and Rheumatology, Oregon Health and Science University, Portland, OR, United States., Asquith M; Division of Arthritis and Rheumatology, Oregon Health and Science University, Portland, OR, United States., Gregory WT; Division of Urogynecology, Oregon Health and Science University, Portland, OR, United States., Karstens L; Division of Urogynecology, Oregon Health and Science University, Portland, OR, United States.; Division of Bioinformatics and Computational Biomedicine, Oregon Health and Science University, Portland, OR, United States.
Jazyk:	angličtina
Zdroj:	Frontiers in cellular and infection microbiology [Front Cell Infect Microbiol] 2022 Mar 24; Vol. 12, pp. 759156. Date of Electronic Publication: 2022 Mar 24 (Print Publication: 2022).
DOI:	10.3389/fcimb.2022.759156
Abstrakt:	Background: Little is known about the relationship of proximal urogenital microbiomes in the bladder and the vagina and how this contributes to bladder health. In this study, we use a microbial ecology and network framework to understand the dynamics of interactions/co-occurrences of bacteria in the bladder and vagina in women with and without urgency urinary incontinence (UUI). Methods: We collected vaginal swabs and catheterized urine specimens from 20 women with UUI (cases) and 30 women without UUI (controls). We sequenced the V4 region of the bacterial 16S rRNA gene and evaluated using alpha and beta diversity metrics. We used microbial network analysis to detect interactions in the microbiome and the betweenness centrality measure to identify central bacteria in the microbial network. Bacteria exhibiting maximum betweenness centrality are considered central to the microbe-wide networks and likely maintain the overall microbial network structure. Results: There were no significant differences in the vaginal or bladder microbiomes between cases and controls using alpha and beta diversity. Silhouette metric analysis identified two distinct microbiome clusters in both the bladder and vagina. One cluster was dominated by Lactobacillus genus while the other was more diverse. Network-based analyses demonstrated that vaginal and bladder microbial networks were different between cases and controls. In the vagina, there were similar numbers of genera and subgroup clusters in each network for cases and controls. However, cases tend to have more unique bacterial co-occurrences. While Bacteroides and Lactobacillus were the central bacteria with the highest betweenness centrality in controls, Aerococcus had the highest centrality in cases and correlated with bacteria commonly associated with bacterial vaginosis. In the bladder, cases have less than half as many network clusters compared to controls. Lactobacillus was the central bacteria in both groups but associated with several known uropathogens in cases. The number of shared bacterial genera between the bladder and the vagina differed between cases and controls, with cases having larger overlap (43%) compared to controls (29%). Conclusion: Our study shows overlaps in microbial communities of bladder and vagina, with higher overlap in cases. We also identified differences in the bacteria that are central to the overall community structure. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2022 Nardos, Leung, Dahl, Davin, Asquith, Gregory and Karstens.)
Databáze:	MEDLINE
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