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Gardnerella Exposures Alter Bladder Gene Expression and Augment Uropathogenic Escherichia coli Urinary Tract Infection in Mice
Open accessAbstract
The anaerobic actinobacterium Gardnerella was first isolated from the bladder by suprapubic aspiration more than 50 years ago. Since then, Gardnerella has been increasingly recognized as a common and often abundant member of the female urinary microbiome (urobiome). Some studies even suggest that the presence of Gardnerella is associated with urological disorders in women. We recently reported that inoculation of Gardnerella into the bladders of mice results in urothelial exfoliation. Here, we performed whole bladder RNA-seq in our mouse model to identify additional host pathways involved in the response to Gardnerella bladder exposure. The transcriptional response to Gardnerella reflected the urothelial turnover that is a consequence of exfoliation while also illustrating the activation of pathways involved in inflammation and immunity. Additional timed exposure experiments in mice provided further evidence of a potentially clinically relevant consequence of bladder exposure to Gardnerella—increased susceptibility to subsequent UTI caused by uropathogenic Escherichia coli. Together, these data provide a broader picture of the bladder’s response to Gardnerella and lay the groundwork for future studies examining the impact of Gardnerella on bladder health.
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“In addition to these classical uropathogens, several vaginal species, such as Gardnerella vaginalis , Aerococcus , and Ureaplasma are increasingly recognized as contributors to urinary tract pathology, either through direct infection or modulation of host susceptibility [11].”
From Vaginal microbiota and urinary tract infections in women: the protective role of vaginal lactobacilli in counteracting urinary tract infections occurrence and recurrence (2026) · cites this paper as [11]
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The Etiology and Management of Recurrent Urinary Tract Infections in Postmenopausal Women
Jung, C., & Brubaker, L. (2019) · Climacteric · doi:10.1080/13697137.2018.1551871 · Cited by 169
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Cited by
Metadata
- Authors
- Gilbert, N. M., O’Brien, V. P., Waller, C., Batourina, E., Mendelsohn, C. L., & Lewis, A. L.
- Affiliations
- Washington University in St. Louis (US)
- Columbia University Irving Medical Center (US)
- University of California San Diego (US)
- Corresponding author
- Gilbert, Nicole M.
- Venue
- Frontiers in Cellular and Infection Microbiology
- Publisher
- Frontiers Media SA
- Published
- 2022-06-16
- Volume
- 12
- Pages
- 909799-909799
- ISSN
- 2235-2988 (ISSN-L)
- PMC
- PMC9245024
- OpenAlex
- W4283027576
- Cited by
- 23
- References
- 1
- Citations by year
- 2026: 7 · 2025: 6 · 2024: 5 · 2023: 4 · 2022: 1
- FWCI
- 2.82
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Frontiers in Cellular and Infection Microbiology (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Digital Commons@Becker (Washington University School of Medicine) (submittedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Science Foundation (1143954)
- American Heart Association
- National Institutes of Health (DGE-1143954, CA013696, DK104309)
- Washington University School of Medicine in St. Louis
- Center for Cellular Imaging, Washington University
- National Cancer Institute (P30CA013696)
- National Institute of Allergy and Infectious Diseases (R21AI152049, AI152049, AI114635, R01AI114635)
- National Institute of Diabetes and Digestive and Kidney Diseases (DK092586, R03DK132442, K01DK110225, R21DK092586, DK110225, U54DK104309)
- National Center for Research Resources (C06-RR-015502)
- Topics
- Health Sciences › Medicine › Urology › Urinary Tract Infections Management
- Life Sciences › Immunology and Microbiology › Microbiology › Reproductive tract infections research
- Health Sciences › Medicine › Urology › Urinary Bladder and Prostate Research
- Keywords
- Gardnerella, uropathogenic Escherichia coli, urinary tract infection, urinary microbiome, inflammation, host immune response, mouse model
- MeSH terms
- Animals, Urinary Bladder, Escherichia coli Infections, Female, Humans, Urinary Tract Infections, Gene Expression, Gardnerella, Mice, Uropathogenic Escherichia coli
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