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• W2116744537 abstract "No AccessJournal of UrologyInvestigative Urology1 Oct 2008A Biphasic Response From Bladder Epithelial Cells Induced by Catheter Material and Bacteria: An In Vitro Study of the Pathophysiology of Catheter Related Urinary Tract Infectionis companion ofDaily Cranberry Juice for the Prevention of Asymptomatic Bacteriuria in Pregnancy: A Randomized, Controlled Pilot Study Jessica M.T. Barford, Yanmin Hu, Ken Anson, and Anthony R.M. Coates Jessica M.T. BarfordJessica M.T. Barford Financial interest and/or other relationship with Bactiguard. More articles by this author , Yanmin HuYanmin Hu More articles by this author , Ken AnsonKen Anson More articles by this author , and Anthony R.M. CoatesAnthony R.M. Coates Financial interest and/or other relationship with Bactiguard. More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2008.06.012AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract Purpose: Catheter associated urinary tract infection is the most common type of hospital acquired infection. An understanding of catheter associated urinary tract infection pathogenesis is needed to improve the control and treatment of these infections. We investigated the relationship among catheter material, bacteria and bladder epithelial cell reaction. Materials and Methods: Urinary catheter sections and a clinical isolate of Escherichia coli were added to human bladder carcinoma epithelial cells in vitro in combination or independently. The catheters were rotated for 30 seconds over the cells, followed by incubation. The cytokines interleukin-6 and 8 were measured by enzyme-linked immunosorbent assay as indicators of inflammation and cell membrane disruption was assessed using a lactate dehydrogenase assay. Results: The levels of lactate dehydrogenase release and cytokine production depended on the number of bacteria added. Bacteria grown for 3 days caused greater secretion of cytokines than bacteria grown overnight. Silicone catheter material alone caused immediate damage to cells with increased lactate dehydrogenase in the supernatant but little interleukin-6 or 8 production. Silicone catheters caused significantly less cytokine secretion from bladder cells than latex catheters. Conversely bacteria caused little immediate damage to cells but stimulated cytokine production after 12 hours. Conclusions: Disruption of bladder epithelial cell membranes in vitro occurred immediately as a result of physical abrasion caused by catheters but delayed inflammation occurred in response to bacterial infection. References 1 : Point prevalence survey for healthcare-associated infections within Canadian adult acute-care hospitals. J Hosp Infect2007; 66: 243. Google Scholar 2 : Prevalence and risk factors for nosocomial infections in hospitals of the Veneto region, north-eastern Italy. Infection2008; 36: 112. Google Scholar 3 : A European perspective on nosocomial urinary tract infections II. Report on incidence, clinical characteristics and outcome (ESGNI-004 study). European Study Group on Nosocomial Infection. Clin Microbiol Infect2001; 7: 532. Google Scholar 4 : Catheter-associated urinary tract infection is rarely symptomatic: a prospective study of 1,497 catheterized patients. Arch Intern Med2000; 160: 678. Google Scholar 5 : Failure of the urinalysis and quantitative urine culture in diagnosing symptomatic urinary tract infections in patients with long-term urinary catheters. Am J Infect Control1985; 13: 154. Google Scholar 6 : The relationship between pyuria and infection in patients with indwelling urinary catheters: a prospective study of 761 patients. Arch Intern Med2000; 160: 673. Google Scholar 7 : Assessment of silver-coated urinary catheter toxicity by cell culture. Urol Res1989; 17: 359. Google Scholar 8 : Cytotoxicity of latex urinary catheters. Br J Urol1985; 57: 82. Google Scholar 9 : Post-catheterisation urethral strictures: A clinical and experimental study. Br J Urol1983; 55: 53. Google Scholar 10 : Histological changes in the urinary bladder secondary to urethral catheterisation. Br J Urol1989; 63: 354. Google Scholar 11 : Secretion of cytokines by uroepithelial cells stimulated by Escherichia coli and Citrobacter spp. Int J Antimicrob Agents2001; 17: 253. Google Scholar 12 : Role of epithelial interleukin-8 (IL-8) and neutrophil IL-8 receptor A in Escherichia coli-induced transuroepithelial neutrophil migration. Infect Immun1997; 65: 3451. Google Scholar 13 : Cytotoxic necrotizing factor type 1 of uropathogenic Escherichia coli kills cultured human uroepithelial 5637 cells by an apoptotic mechanism. Infect Immun2000; 68: 5869. Google Scholar 14 : Induction and evasion of host defenses by type 1-piliated uropathogenic Escherichia coli. Science1998; 282: 1494. Google Scholar 15 : Proinflammatory cytokine production by human keratinocytes stimulated with Propionibacterium acnes and P. acnes GroEL. Br J Dermatol2004; 150: 421. Google Scholar 16 : Induction of interleukin-8 in T84 cells by Vibrio cholerae. Infect Immun2004; 72: 389. Google Scholar 17 : A model of catheter-associated urinary tract infection initiated by bacterial contamination of the catheter tip. BJU Int2008; 102: 67. Google Scholar 18 : Role of nutrient limitation and stationary-phase existence in Klebsiella pneumoniae biofilm resistance to ampicillin and ciprofloxacin. Antimicrob Agents Chemother2003; 47: 1251. Google Scholar Department of Medical Microbiology, Cellular and Molecular Medicine, St. George's, University of London and Department of Urology, St. George's Hospital (KA), London, United Kingdom© 2008 by American Urological AssociationFiguresReferencesRelatedDetailsCited bySchlager T, LeGallo R, Innes D, Hendley J and Peters C (2018) B Cell Infiltration and Lymphonodular Hyperplasia in Bladder Submucosa of Patients With Persistent Bacteriuria and Recurrent Urinary Tract InfectionsJournal of Urology, VOL. 186, NO. 6, (2359-2364), Online publication date: 1-Dec-2011.Related articlesJournal of Urology15 Aug 2008Daily Cranberry Juice for the Prevention of Asymptomatic Bacteriuria in Pregnancy: A Randomized, Controlled Pilot Study Volume 180Issue 4October 2008Page: 1522-1526 Advertisement Copyright & Permissions© 2008 by American Urological AssociationKeywordsEscherichia colicross infectionbladderurinary tract infectionsurinary catheterizationAcknowledgmentsAna Cehovin assisted with ELISA and Fiona Reid provided statistical advice. Bactiguard AB provided the catheters. All cell culture medium was obtained from Invitrogen™ unless otherwise stated. Antibodies and standards were obtained from National Institute for Biological Standards and Control, Potters Bar, United Kingdom or R&D Systems®. IL-8 antibodies and standards were obtained from ImmunoTools, Friesoythe, Germany or R&D Systems.MetricsAuthor Information Jessica M.T. Barford Financial interest and/or other relationship with Bactiguard. More articles by this author Yanmin Hu More articles by this author Ken Anson More articles by this author Anthony R.M. Coates Financial interest and/or other relationship with Bactiguard. More articles by this author Expand All Advertisement PDF downloadLoading ..." @default.
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