4.3 Article

Seminal microbiome in men with and without prostatitis

期刊

INTERNATIONAL JOURNAL OF UROLOGY
卷 24, 期 3, 页码 211-216

出版社

WILEY
DOI: 10.1111/iju.13286

关键词

lactobacilli; microbiome; next-generation sequencing; prostatitis; semen

资金

  1. Estonian Research Council [IUT34-19, PUT181]
  2. Estonian Ministry of Education and Research [KOGU-HUMB]
  3. University of Tartu [SARMBARENG]
  4. Enterprise Estonia [EU48695]

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ObjectivesTo profile the seminal microbiome applying next generation sequencing. MethodsSemen samples of 67 men were involved in the study (21 men with and 46 men without prostatitis). Seminal microbiomes were profiled applying the method that uses combinatorial sequence tags attached to polymerase chain reaction primers that amplify the ribosomal ribonucleic acid V6 region. Amplified polymerase chain reaction products were sequenced using an Illumina paired-end protocol on HiSeq2000 platform. ResultsThe most abundant phylum in semen was Firmicutes, comprising nearly half of the sequences found (median 41.7%, quartiles 28.5-47.2%) followed by Bacteroidetes, Proteobacteria and Actinobacteria. The counts of lactobacilli were higher in healthy men than prostatitis patients (27% [20.2-34.6%] vs 20.2% [4.9-25.0%]; P = 0.05), especially for Lactobacillus iners. Proteobacteria comprised higher proportions in prostatitis patients than healthy men. The species richness was higher in prostatitis patients than healthy men (inverted Simpson index 13.5 5.8 vs 10.3 +/- 4.0). ConclusionsThe semen of chronic prostatitis patients contains fewer health-supporting lactobacilli, and has higher species diversity than that of healthy men. Firmicutes (especially lactobacilli), Bacteroidetes, Proteobacteria and Actinobacteria comprise the highest proportion of seminal microbiome.

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