Pathogenic factors in recurrent urinary tract infections and renal scar formation in children

1986 ◽  
Vol 145 (5) ◽  
pp. 330-336 ◽  
Author(s):  
W. Mannhardt ◽  
O. Schofer ◽  
H. Schulte-Wissermann
Keyword(s):  
Urinary Tract ◽  
Urinary Tract Infections ◽  
Scar Formation ◽  
Renal Scar ◽  
Recurrent Urinary Tract Infections ◽  
Pathogenic Factors ◽  
Tract Infections

scholarly journals Escherichia coli Causing Recurrent Urinary Tract Infections: Comparison to Non-Recurrent Isolates and Genomic Adaptation in Recurrent Infections

2021 ◽  
Vol 9 (7) ◽  
pp. 1416
Author(s):  
Karen Leth Nielsen ◽  
Marc Stegger ◽  
Kristoffer Kiil ◽  
Berit Lilje ◽  
Karen Ejrnæs ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Urinary Tract ◽  
Urinary Tract Infections ◽  
Genomic Variation ◽  
Whole Genome Sequencing Data ◽  
Phenotypic Traits ◽  
Recurrent Infections ◽  
Single Nucleotide ◽  
Recurrent Urinary Tract Infections ◽  
Tract Infections

Recurrent urinary tract infection (rUTI) remains a major problem for many women and therefore the pursuit for genomic and phenotypic traits which could define rUTI has been ongoing. The present study applied a genomic approach to investigate recurrent urinary tract infections by comparative analyses of recurrent and non-recurrent Escherichia coli isolates from general practice. From whole-genome sequencing data, phylogenetic clustering and genomic traits were studied on a collection of isolates which caused recurrent infection compared to non-recurrent isolates. In addition, genomic variation between the 1st and following infection was studied on a subset of the isolates. Evidence of limited adaptation between the recurrent infections based on single nucleotide polymorphism analyses with a range of 0–13 non-synonymous single nucleotide polymorphisms (SNPs) between the paired isolates. This included an overrepresentation of SNPs in metabolism genes. We identified several genes which were more common in rUTI isolates, including nine fimbrial genes, however, not significantly after false-discovery rate. Finally, the results show that recurrent isolates of the present dataset are not distinctive by variation in the core genome, and thus, did not cluster distinct from non-rUTI isolates in a SNP phylogeny.

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