Abstract
Objective
To describe differences in the urinary microbiome of patients with pathologically confirmed lichen sclerosus (LS) urethral stricture disease (USD) vs non-lichen sclerosus (non-LS) USD pre- and post-operatively.
Methods
Patients were pre-operatively identified and prospectively followed, all underwent surgical repair and had tissue samples obtained to make a pathological diagnosis of LS. Pre- and post-operative urine samples were collected. Bacterial genomic DNA was extracted. Alpha and beta diversity measurements were calculated and compared. A zero-inflated negative binomial model was utilized to compare taxa abundances between disease status and surgery status.
Results
Urine samples were obtained from both cohorts, 69 samples in total: 36 samples were obtained pre-operatively and 33 samples were obtained post-operatively. Ten patients provided both a pre-operative and post-operative urine sample. Twenty-six patients had pathological evidence of LS and 33 patients did not. There was a statistically significant difference in alpha diversity between the pre-operative urine samples of patients with non-LS USD and LS USD, (p = 0.01). There was no significant difference in alpha diversity within post-operative urine samples between patients with non-LS USD and LS USD, (p = 0.1). A significant difference was observed in Weighed UniFrac distances with respect to disease and operative status, (p = 0.001 and 0.002).
Conclusions
LS USD have significant alterations in diversity and differential abundance of urine microbiota compared to non-LS USD controls. These findings could be used to guide further investigations into the role of the urinary microbiome in LS USD pathogenesis, severity of presentation, and stricture recurrence.
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M Jamil: Protocol/project development, Data collection or management, Data analysis, Manuscript writing/editing. A Perecman: Protocol/project development, Data collection or management. A Sherman: Protocol/project development, Data collection or management. T Sullivan: Protocol/project development, Data collection or management, Data analysis, Manuscript writing/editing. K Christ: Protocol/project development, Data collection or management, Data analysis, Manuscript writing/editing. A Hansma: Data collection or management, Data analysis. E Burks: Data collection or management, Data analysis,. A Vanni: Protocol/project development, Data collection or management, Data analysis, Manuscript writing/editing.
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This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Ethics Committee of Lahey Hospital and Medical Center.
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345_2023_4490_MOESM2_ESM.pdf
Supplementary Figure 1: Beta diversity group comparison based on unweighted UniFrac distances. Abbreviations: LS; Lichen Sclerosus non-LS; Non Lichen Sclerosus, PC; Principal coordinates
345_2023_4490_MOESM3_ESM.pdf
Supplementary Figure 2: Beta diversity group comparison based Bray Curtis distances Abbreviations: LS; Lichen Sclerosus non-LS; Non Lichen Sclerosus, PC; Principal coordinates
345_2023_4490_MOESM4_ESM.png
Supplementary Figure 3: Stacked barplot demonstrating the relative abundances of taxa at the phylum and order levels level for all samples with and without Lichen Sclerosus further stratified by pre and post-operative status. Abbreviations: LS; Lichen Sclerosus non-LS; Non Lichen Sclerosus
345_2023_4490_MOESM5_ESM.pdf
Supplementary Figure 4: Comparison of Shannon diversity between the pre-operative and post-operative non-Lichen Sclerosis and Lichen Sclerosis groups stratified by Lichen Sclerosis disease score
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Jamil, M.L., Perecman, A., Sherman, A. et al. Urinary microbiome differences between lichen sclerosus induced and non-lichen sclerosus induced urethral stricture disease. World J Urol 41, 2495–2501 (2023). https://doi.org/10.1007/s00345-023-04490-0
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DOI: https://doi.org/10.1007/s00345-023-04490-0