Trial reportPloS one2018
The bacterial microbiota in first-void urine from men with and without idiopathic urethritis.
Trial report in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
26 citing papers in PubMed, 1 synthesis or guideline pooled it, 54 citations in OpenAlex.
- German evidence- and consensus-based guideline on the management of penile urethritis.Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG · 2025Guideline
- Bacteriological Analysis of Urine Cultures and Related Clinical Features in Patients with Infection Stones: A Single-Center Retrospective Cohort Analysis from Beijing, China.Infection and drug resistance · 2026Article
- The role of urine microbiota in culture-negative patients with pyuria.World journal of urology · 2025Article
- Comparison of the urinary microbiome in men who have sex with men with and without Chlamydia trachomatis infection.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2024Article
- Lower Urinary Tract Inflammation and Infection: Key Microbiological and Immunological Aspects.Journal of clinical medicine · 2024Review
- Urinary Tract Infection and Microbiome.Diagnostics (Basel, Switzerland) · 2023Review
- The impact of urine collection method on canine urinary microbiota detection: a cross-sectional study.BMC microbiology · 2023Article
- Sexual behavior shapes male genitourinary microbiome composition.Cell reports. Medicine · 2023Article
- Overview of BPH: Symptom Relief with Dietary Polyphenols, Vitamins and Phytochemicals by Nutraceutical Supplements with Implications to the Prostate Microbiome.International journal of molecular sciences · 2023Review
- Cataloging variation in 16S rRNA gene sequences of female urobiome bacteria.Frontiers in urology · 2023Article
- Article
- Article
- The Potential Role of Urinary Microbiome in Benign Prostate Hyperplasia/Lower Urinary Tract Symptoms.Diagnostics (Basel, Switzerland) · 2022Review
- Molecular Regulatory Mechanisms Drive Emergent Pathogenetic Properties ofMicroorganisms · 2022Review
- Evaluation of Urethrotropic-Clade Meningococcal Infection by Urine Metagenomic Shotgun Sequencing.Journal of clinical microbiology · 2022Article
- Bacteria-Mediated Oncogenesis and the Underlying Molecular Intricacies: What We Know So Far.Frontiers in oncology · 2022Review
- Alpha-diversity and microbial community structure of the male urinary microbiota depend on urine sampling method.Scientific reports · 2021Article
- Urethral Microbiota in Men: Association of Haemophilus influenzae and Mycoplasma penetrans With Nongonococcal Urethritis.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2021Article
- The human urobiome.Mammalian genome : official journal of the International Mammalian Genome Society · 2021Review
- The Urinary Tract Microbiome in Male Genitourinary Diseases: Focusing on Benign Prostate Hyperplasia and Lower Urinary Tract Symptoms.International neurourology journal · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundNon-gonococcal urethritis (NGU) is a common syndrome in men. NGU may have several causes, but many cases are caused by sexually transmitted infections that may also cause complications in their female partners. Chlamydia trachomatis and Mycoplasma genitalium are the most common causes of NGU, but in up to 35% of the cases, none of the known viral or bacterial causes are found. Traditionally, pathogens have been detected using various culture techniques that may not identify all species present in the urethra. To address this, we used culture-independent methods for analysis of the male urethral microbiota.
methodsThis case-control study analysed first void urine samples, collected at STD clinics in Stockholm, Sweden from men with idiopathic urethritis (IU), i.e. negative for Neisseria gonorrhoeae, Chlamydia trachomatis, Mycoplasma genitalium, Ureaplasma urealyticum, Trichomonas vaginalis, adenovirus, and herpes simplex virus type 1 and -2 together with samples from men without urethritis. Forty-six controls and 39 idiopathic urethritis patients were analysed.
resultsThe microbiota was highly diverse: None of the 302 operational taxonomic units (OTUs) found in negative controls and IU patients were found in all of the samples or even in all of the samples in one group. More than 50% of the OTUs were only found in one or two of the total of 85 samples. Still the most dominant 1/6 of the genera constituted 79% of the sequences. Hierarchical clustering in a heatmap showed no specific clustering of patients or controls. A number of IU patient samples were dominated by a single genus previously related to urethritis (Gardnerella, Haemophilus, Ureaplasma).
conclusionThe male urethra contain a very diverse composition of bacteria, even in healthy controls. NGU may be caused by a number of different bacteria but more studies including a higher number of samples are needed for elucidation of the role of each species.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.