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  2. Microbiota 18 - May 2023
  3. Urinary and Urethral Microbiota #18

Urinary and Urethral Microbiota #18

Urinary tract
Urology

By Pr. Satu Pekkala
Academy of Finland Research Fellow, Faculty of Sport and Health Sciences, University of Jyväskylä, Finland

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About this article

Created 07 June 2023
Updated 08 June 2023

IDIOPATHIC URETHRITIS IN MEN: NEW INFECTIOUS ETIOLOGIES?

Plummer EL, Ratten LK, Vodstrcil LA, et al. The urethral microbiota of men with and without idiopathic urethritis. mBio 2022; 13: e0221322.

Some Australian researchers sought to determine which infectious agents, apart from those already known, might contribute to non-gonococcal urethritis in men, taking into account their sexual practices and the biological sex of their partner. For this, they conducted a case study including 199 men, 96 of whom had symptoms of idiopathic urethritis and 103 of whom did not, who served as controls. The median age of participants was 31 years, 73 had had a sexual relationship with a man in the month prior to inclusion (classified as MSM), and the remainder were classified as MSW. For all of them, the researchers had samples of urinary and urethral microbiota available for sequencing analysis. Their results revealed that Haemophilus influenzae, which naturally colonizes nasopharyngeal microbiota, was more abundant in MSM participants with idiopathic urethritis. In addition, H. influenzae was clearly associated with clinical features such as urethral burning, dysuria and purulent discharge. The researchers believe having oral sex without a condom could be the main mode of contamination by this bacterium. They observed more of the genus Corynebacterium in affected MSW, which they found surprising since it is considered commensal in male genital microbiota. The scientists conclude that some specific species of Corynebacterium may become pathogenic when present in abundance. There were also more Ureaplasma, Staphylococcus haemolyticus, Streptococcus pyogenes, Escherichia and Streptococcus pneumoniae in the urinary and urethral microbiota of symptomatic subjects, so they may all promote urethritis. Possible infectious causes of non-gonococcal urethritis, previously described as idiopathic, have thus been discovered. If these results are confirmed by other studies, doctors may eventually be able to offer their patients more targeted treatments.

Tags
Urinary tract infection Urinary microbiota Urinary system Microbiome Flora
    Focus
    Microbiota 18 - May 2023
    • Overview
      • Oral microbiota and chronic conditions
    • Commented article
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      • Rural environment reduces allergic inflammation by modulating the gut microbiota
    • Congress review
      • Highlights of Gut Microbiota for Health - World Summit 2023
    • Press review
      • Gut Microbiota #18
      • Vaginal Microbiota #18
      • Urinary and Urethral Microbiota #18
    • Expert opinion
      • Artificial sweeteners, gut microbiota and metabolic health: an interaction requiring close examination
    Created 07 June 2023
    Updated 08 June 2023

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    Urinary tract

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    Urology

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    Vaginal Microbiota #18
    Artificial sweeteners, gut microbiota and metabolic health: an interaction requiring close examination
    Focus

    Microbiota 18 - May 2023

    Overview

    Oral microbiota and chronic conditions

    Commented article

    A pan-cancer mycobiome analysis reveals fungal involvement in gastrointestinal and lung tumours Rural environment reduces allergic inflammation by modulating the gut microbiota

    Congress review

    Highlights of Gut Microbiota for Health - World Summit 2023

    Press review

    Gut Microbiota #18 Vaginal Microbiota #18 Urinary and Urethral Microbiota #18

    Expert opinion

    Artificial sweeteners, gut microbiota and metabolic health: an interaction requiring close examination
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