Document Detail

Absence of bacterial reservoirs in the bladder epithelium of patients with chronic bacteriuria due to neurogenic bladder.
MedLine Citation:
PMID:  19692065     Owner:  NLM     Status:  MEDLINE    
PURPOSE: Bacteriuria is common in patients with neurogenic bladder who are on clean intermittent catheterization for bladder emptying. In a longitudinal study patients carried 1 or 2 clones of Escherichia coli in the urine during months of surveillance. An explanation for persistent bacteriuria in this population could be that periurethral E. coli inoculated during clean intermittent catheterization would attach via type I adhesin, invade superficial bladder epithelial cells and establish reservoirs. Resurgence of bacteria from these reservoirs in bladder epithelium could later reenter the urine and establish a recurrent episode of bacteriuria. We investigated whether bacterial reservoirs were present in the superficial epithelium of patients with neurogenic bladder and chronic bacteriuria. MATERIALS AND METHODS: Bladder biopsies were obtained from patients with neurogenic bladder and a history of chronic recurrent bacteriuria. Biopsies were fixed in Carnoy's solution to preserve the material overlying the luminal surface of the superficial bladder epithelium. Following fixation biopsies were stained with hematoxylin and eosin to detect intracellular bacterial reservoirs and with periodic acid-Schiff for exopolysaccharide of biofilm. Fluorescence in situ hybridization was done to visualize individual bacteria. RESULTS: No evidence of bacterial reservoirs was found in the superficial bladder epithelium of 9 patients with neurogenic bladder. On hematoxylin and eosin staining epithelium with an intact luminal surface had no intracellular bacterial pods. On periodic acid-Schiff staining no biofilm or collection of exopolysaccharide surrounding bacterial communities was found. No collections or individual bacteria were seen on fluorescence in situ hybridization stained sections examined at 1,000x magnification with oil immersion. CONCLUSIONS: Bacterial reservoirs do not appear to be an important source of bacteriuria in patients with chronic recurrent bacteriuria due to neurogenic bladder.
T A Schlager; J O Hendley; C A Peters
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-08-18
Journal Detail:
Title:  The Journal of urology     Volume:  182     ISSN:  1527-3792     ISO Abbreviation:  J. Urol.     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-09-14     Completed Date:  2009-10-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376374     Medline TA:  J Urol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1714-9     Citation Subset:  AIM; IM    
Department of Pediatrics, University of Virginia, Charlottesville, Virginia, USA.
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MeSH Terms
Bacteriuria / etiology*,  microbiology
Child, Preschool
Chronic Disease
Disease Reservoirs
Urinary Bladder / microbiology
Urinary Bladder, Neurogenic / complications*
Urothelium / microbiology
Young Adult

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