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Pilot Study of the Microbiological Diversity of the Urinary Tract of Healthy Young Men in Poland Cover

Pilot Study of the Microbiological Diversity of the Urinary Tract of Healthy Young Men in Poland

Advancements of Microbiology
Volume 65 (2026): Issue 1 (March 2026)
By: Filip Bielec,  Stanisław Klimaszewski,  Piotr Machnicki and  Dorota Pastuszak-Lewandoska  
Open Access
|Mar 2026

Figures & Tables

Figure 1.

Summary of plates and conditions that were used for culture (plates: BA – Blood Agar Plate, CHA – Chocolate Agar, CNA – Colistin & Nalidixid Acid Agar, ABA – Anaerobe Blood Agar).

Figure 2.

Graphical presentation of urinary microbiota assessed by expanded quantitative urine culture (EQUC) among examined males (n = 35). Microbiota profiles are shown as stacked bar graphs depicting the relative abundance of various genera. Defined urotypes (UTs) were: UT 1 – Streptococcus spp., UT 2 – Staphylococcus spp., UT 3 – Corynebacterium spp. Other UTs – other genus predominance observed in one sample only, Mixed UTs – no predominant genus detected.

Figure 3.

Comparison of sexual activity between detected urotypes among examined males (n = 40) – the squares show medians; the boxes show interquartile ranges; and the whiskers show total ranges. Legend: Sterile – no bacteria cultured, UT 1 – Streptococcus spp. predominance, UT 2 – Staphylococcus spp. predominance, UT 3 – Corynebacterium spp. predominance, Mixed – no predominant genus detected. Differences between groups were not statistically significant.

Figure 4.

Comparison of vaginal sexual behavior between detected urotypes between examined sexually active males (n = 30) – the squares show medians; the boxes show interquartile ranges; and the whiskers show total ranges. Legend: Sterile – no bacteria cultured, UT 1 – Streptococcus spp. predominance, UT 2 – Staphylococcus spp. predominance, UT 3 – Corynebacterium spp. predominance, Mixed – no predominant genus detected. Differences between groups were not statistically significant.

Figure 5.

Comparison of oral sexual behavior between detected urotypes between examined sexually active males (n = 30) – the squares show medians; the boxes show interquartile ranges; and the whiskers show total ranges. Legend: Sterile – no bacteria cultured, UT 1 – Streptococcus spp. predominance, UT 2 – Staphylococcus spp. predominance, UT 3 – Corynebacterium spp. predominance, Mixed – no predominant genus detected. Differences between groups were not statistically significant.

Figure 6.

Comparison of anal sexual behavior between detected urotypes between examined sexually active males (n = 30) – the squares show medians; the boxes show interquartile ranges; and the whiskers show total ranges. Legend: Sterile – no bacteria cultured, UT 1 – Streptococcus spp. predominance, UT 2 – Staphylococcus spp. predominance, UT 3 – Corynebacterium spp. predominance, Mixed – no predominant genus detected. Differences between groups were not statistically significant.

Figure 7.

Comparison of physical activity time between detected urotypes among examined males (n = 40) – the squares show medians; the boxes show interquartile ranges; and the whiskers show total ranges. Legend: Sterile – no bacteria cultured, UT 1 – Streptococcus spp. predominance, UT 2 – Staphylococcus spp. predominance, UT 3 – Corynebacterium spp. predominance, Mixed – no predominant genus detected. Differences between groups were not statistically significant.

Characteristics of study participants_

Malen = 40 (100%)
Age20–36 years old (mean = 24)
Sexually activen = 30 (75%)
Sexual behavior
  - vaginaln = 19 (63%)
  - oraln = 27 (90%)
  - analn = 11 (36%)
Physically activen = 17 (43%)
Physical activity time20–120 min daily (mean =55)
DOI: https://doi.org/10.2478/am-2026-0005 | Journal eISSN: 2545-3149 | Journal ISSN: 0079-4252
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Language: English, Polish
Page range: 48 - 55
Submitted on: Sep 22, 2025
|
Accepted on: Feb 18, 2026
|
Published on: Mar 31, 2026
Published by: Polish Society of Microbiologists
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
microbiota,
microbiology,
pilot study,
urinary tract,
urotypes
Related subjects:
Life sciences,
Microbiology and virology

© 2026 Filip Bielec, Stanisław Klimaszewski, Piotr Machnicki, Dorota Pastuszak-Lewandoska, published by Polish Society of Microbiologists
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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