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Selected literature in 2006
     
therapy &
management
 
 
  • New frontiers in intravesical therapies and drug delivery.
    Giannatoni A, Di Stasi SM, Chancellor MB, et al. Eur Urol 2006:50:1183-93
    • Electromotive drug administration (EMDA), new in situ delivery systems and bioadhesive liposomes may make it possible to extend intravesical therapy and drug administration to many bladder diseases. Further research is needed to make this a reality (review)
 
   
   
   
   
 
  • Oral presentations at the 31st Annual IUGA Meeting, Athens, Greece, 6-9 September 2006
  • abstract 048
    Reducing interstitial cystitis pain via pelvic floor electrostimulation.
    de Jong P, Radziszewski P, Dobronski P, et al. Int Urogynecol J 2006;17(Suppl 2):S86
    • the authors conclude that a significant effect of pelvic floor stimulation (Miniaturo™-1) in pain associated with IC/PBS was demonstrated
    • improving this distressing parameter considerably changed the quality of life of the patients
 
 
  • Differential effects of the antimuscarinic agents darifenacin and oxybutynin ER on memory in older subjects.
    Kay G, Crook T, Rekeda L, et al. Eur Urol 2006;50:317-26
    • oxybutynin is used not only by OAB patients but also by many PBS/IC patients. This study concludes that oxybutynin ER caused significant memory deterioration (magnitude of effect comparable to brain aging of 10 years). The results also demonstrate that subjects may not recognise/report memory deterioration and memory decline may be attributed wrongly to aging. The findings highlight a need for further studies to fully establish the effects of all OAB antimuscarinics on memory/cognition.

    Editorial
    Antimuscarinics and cognitive function.
    De Ridder D.  Eur Urol 2006;50:211-2
    • in this editorial, the author adds that in many countries, for financial reasons, the older and cheaper oxybutynin will still be the treatment of choice
 
   
 
  • Chondroitin sulfate for interstitial cystitis.
    Palylyk-Colwell E. Issues Emerg Health Technol 2006 May;(84):1-4
    • this review concludes that two non-randomized, uncontrolled pilot studies reported improvements in patient-reported symptoms after the use of chondroitin sulfate for one year
    • the author also concludes that prospective, randomized, head-to-head trials are needed to assess the effectiveness of this technology compared with other IC therapies
 
   
 
  • Botulinum a toxin intravesical injections in the treatment of painful bladder syndrome: a pilot study..
    Giannantoni A, Costantini E, Di Stasi SM, et al. Eur Urol 2006;49:704-9. Epub 2006 Jan 4.
    • the results of this pilot study indicate that BTX-A intravesical injections are effective in the short-term management of painful bladder syndrome
    • by modulating afferent C-fiber activity within the bladder walls, BTX-A significantly improves urodynamic parameters and reduces bladder pain and urinary frequency
    note:
    • this pilot study was not blinded nor placebo-controlled and included small numbers of patients; therefore, efficacy of treatment needs confirmation in randomised, double-blind, placebo-controlled studies
 
 
  • Efficacy of interstitial cystitis treatments: a review.
    Karsenty G, AlTaweel W, Hajebrahimi S, Corcos J. EAU-EBU Update Series 2006;4:47-61
    • in this article, the degree of evidence regarding the clinical efficacy of available interstitial cystitis treatment options is reviewed
    • only three therapies are supported by a high level of evidence: oral cimetidine and amitriptyline and the intravesical dimethylsulfoxide (DMSO)
 
   
 
  • Interstitial cystitis: cost, treatment and co-morbidities in an employed population.
    Wu EQ, Birnbaum H, Mareva M, et al. Pharmacoeconomics. 2006;24:55-65
    • the authors conclude that:
    - IC is a costly disease associated with co-morbidities
    - following diagnosis, patients with IC are commonly untreated or treated with non-approved drug therapies
    - it is possible that more accurate diagnosis and earlier and more appropriate treatment of IC would lead to better management (or even prevention) of co-morbidities and reduce healthcare costs, and this should be investigated in future studies.
 
   
   
   
     
symptoms & signs  
   
 
  • Dysuria at onset of interstitial cystitis/painful bladder syndrome in women.
    Warren JW, Diggs C, Brown V, et al. Urology 2006 Sep 15; [Epub ahead of print]
    • a slight majority of women with IC/PBS reported dysuria at onset of their IC/PBS symptoms
    • the available laboratory data have suggested that dysuria may be a sensitive indicator of urinary tract infection at the onset of IC/PBS; however, its specificity is as yet undetermined.
 
   
   
 
  • Symptoms and cystoscopic findings in patients with untreated interstitial cystitis.
    Lamale LM, Lutgendorf SK, Hoffman AN, Kreder KJ. Urology 2006 Jan 24; [Epub ahead of print]
    • in patients with untreated interstitial cystitis, a strong correlation between pain and cystoscopic findings was observed
    • the authors explain the differences between their results and those of previous studies (that found no relationship between symptom reports and cystoscopic findings) by possible effects of treatment on pain perception and therapeutic influence on cystoscopic findings
 
 
  • Responsiveness of symptom scales for interstitial cystitis.
    Propert KJ, Mayer RD, Wang Y, et al. Urology 2006;67:55-9
    • the three symptom scales (O'Leary-Sant Symptom and Problem Indexes, University of Wisconsin Interstitial Cystitis Inventory and scales that measure individual symptom domains of pain/discomfort, urgency, and voiding frequency) are responsive to change over time in patients with IC
    • the authors conclude that these indexes provide important insight into symptom changes and recommend them as secondary endpoints in future clinivcal trials of IC
 
   
- urgency
  • The molecular basis of urgency: Regional difference of vanilloid receptor expression in the human urinary bladder.
    Liu L, Mansfield KJ, Kristiana I, et al. Neurourol Urodyn 2006 Oct 2; [Epub ahead of print]
    • the authors conclude that symptoms of sensory urgency were associated with the increased expression of targeting vanilloid receptor TRPV1 mRNA in the trigonal mucosa; no upregulation or regional differences of TRPV1 mRNA were seen in idiopathic detrusor overactivity patients
    • TRPV1 may play a role in SU and premature first bladder sensation on filling
 
 
  • Oral presentations at the 31st Annual IUGA Meeting, Athens, Greece, 6-9 September 2006
    abstract 046
    There is a low incidence of recurrent bacteriuria in painful bladder syndrome/interstitial cystitis (PBS/IC) patients followed longitudinally.
    Stanford EJ, McMurphy C. Int Urogynecol J 2006;17(Suppl 2):S85
    • the authors conclude that only a small number of PBS/IC patients with UTI symptoms have a positive urine culture (9.4%); the incidence of recurrent UTI is 6.6%
 
     
diagnosis  
   
 
  • Efficiency of Questionnaires Used to Screen for Interstitial Cystitis. (abstract not yet available)
    Kushner L, Moldwin RM. J Urol 2006;176:587-92
    • the Pain, Urgency, Frequency Symptom Scale and the O’Leary-Sant Symptom Index and Problem Index were administered to the same 220 patients at a urology clinic before diagnosis
    • IC was distinguishable from the other diagnoses using both questionnaires (p<0.001)
    • separate analyses of bother and symptom scores yielded similar results
    • ROC curves demonstrated the Pain, Urgency, Frequency Symptom Scale to be more efficient than the O’Leary-Sant Symptom Index and Problem Index in detecting interstitial cystitis in this population with an optimal cutoff value of 13 or greater
    • the authors conclude that while the Pain, Urgency, Frequency Symptom Scale and the O’Leary-Sant Symptom Index and Problem Index questionnaires distinguish interstitial cystitis from other urinary tract pathologies, neither questionnaire demonstrates sufficient specificity to serve as the sole diagnostic indicator; and further that these questionnaires should not be used to define IC, but can be used to screen patients with urinary tract symptoms to identify those who should be further examined for IC or to follow those who have already been diagnosed
 
 
  • Using the International Continence Society's definition of painful bladder syndrome.
    Warren JW, Meyer WA, Greenberg P, et al. Urology 2006;67:1138-42; discussion 1142-3
    • the authors conclude that the ICS definition identified only 91 (66%) of the 138 patients whom study investigators and caregivers diagnosed as having IC/PBS
    • furthermore, those who met the ICS definition did not differ in important ways from those who did not
    • these observations suggest that the ICS definition may not be sufficiently sensitive; minor modifications of the definition appeared to increase its sensitivity
 
   
   
   
   
   
 
  • Chronic pelvic pain: the occurrence of interstitial cystitis in a gynecological population.
    Paulson JD, Delgado M. JSLS 2005;9:426-30
    • 35 women with chronic pelvic pain underwent laparoscopy and cystoscopy with hydrodistention; 28 patients (80%) were diagnosed with interstitial cystitis, 28 with endometriosis (80%), 24 had both diseases (69%), and 32 (91%) had endometriosis, interstitial cystitis, or both. Three patients (9%) had neither and were diagnosed with other pathologies
 
   
     
prevalence
  • Prevalence and trends of selected urologic conditions for VA healthcare users.
    Sohn MW, Zhang H, Taylor BC, et al. BMC Urol 2006;6:30 [Epub ahead of print]
    • prostate cancer was listed as a primary diagnosis for 5.4% of VHA users in 2002, followed in decreasing prevalence by erectile dysfunction (2.9%), renal mass (1.5%), interstitial cystitis (1.4%), and prostatitis (1.1%)
    • age-adjusted rates showed significant increases for renal mass (31%), interstitial cystitis (14%), and erectile dysfunction (8%) between 1999 and 2002
    • increased prevalence rates were not entirely attributable to the aging of veterans
 
   
     
disease markers  
   
     

pathophysiology

 

 
   
   
 
  • Development of glomerulations in younger women with interstitial cystitis.
    Shear S, Mayer R. Urology 2006;68:253-6
    • the authors conlude that
    - interstitial cystitis symptoms can develop before an age where adult urologists or primary care physicians familiar with the diagnosis and treatment are usually involved with care
    - the cystoscopic appearance of the bladder wall after hydrodistension may not be constant over time, and that the absence of initial findings of glomerulations or terminal hematuria does not preclude further development of these hallmarks of the disease on subsequent evaluation
 
 
  • Current opinion on the working mechanisms of neuromodulation in the treatment of lower urinary tract dysfunction.
    van der Pal F, Heesakkers JP, Bemelmans BL. Curr Opin Urol 2006;16:261-7
    • a review in which the authors conclude that:
    - neuromodulation in the treatment of stress incontinence probably induces physiological changes in the sphincter muscles and pelvic floor
    - in the treatment of overactive bladder syndrome, nonobstructive voiding dysfunction and chronic pelvic pain, the mechanism of action is most likely a combination of different modes of action, involving the neuroaxis at different levels
 
 
  • Transient receptor potential vanilloid receptor subtype 1 in painful bladder syndrome and its correlation with pain.
    Mukerji G, Yiangou Y,
    Agarwal SK, Anand P. J Urol 2006;176:797-801
    • study from the United Kingdom showing increased transient receptor potential vanilloid receptor subtype 1 in nerve fibers of the bladder in painful bladder syndrome and a correlation of the pain score with the relative density of transient receptor potential vanilloid receptor subtype 1 nerve fibers
    • the authors conclude that transient receptor potential vanilloid receptor subtype 1 may have a role in the pathophysiology of painful bladder syndrome and it is a potential target for novel therapeutic agents
 
   
 
  • Localization of M2 and M3 Muscarinic Receptors in Human Bladder Disorders and Their Clinical Correlations.
    Mukerji G, Yiangou Y, Grogono J, et al. J Urol 2006;176:367-73
    • in this study the cellular localization is shown of muscarinic receptor subtypes 2 and 3 in the human bladder; the increase in muscarinic receptor subtypes 2 and 3 immunostaining in myofibroblast-like cells in clinical bladder syndromes and its correlation with clinical scores suggests a potential role in pathophysiological mechanisms and the therapeutic effect of anti-muscarinic agents
 
 
  • Cysteinyl leukotriene d(4) increases human detrusor muscle responsiveness to histamine.
    Bouchelouche K, Bouchelouche P. J Urol 2006;176:361-6
    • this study shows that in the human detrusor leukotriene D(4) potentiates the effect of histamine; as leukotriene D(4) and histamine are often released concomitantly from mast cells, leukotriene D(4) may potentiate the spasmogenic effect of histamine
    • the results suggest that the combination of leukotriene D(4) and histamine H1 receptor antagonists may be more effective for the treatment of interstitial cystitis than when given alone
 
 
  • Urothelial lesion formation is mediated by TNFR1 during neurogenic cystitis.
    Chen MC, Mudge CS, Klumpp D. Am J Physiol Renal Physiol 2006 Apr 18; [Epub ahead of print]
    • the authors conclude that mast cell activation and release of TNF drives urothelial apoptosis and lesion formation in a murine neurogenic cystitis model, and they hypothesize that anti-TNF therapy may stabilize bladder barrier function in IC patients
 
   
   
   
 
  • Cool and menthol receptor TRPM8 in human urinary bladder disorders and clinical correlations.
    Mukerji G, Yiangou Y, Corcoran SL, et al. BMC Urol 2006 Mar 6;6(1):6 [Epub ahead of print]
    • according to the authors, this study demonstrates increased cold-menthol sensory receptors (TRPM8) in nerve fibres of overactive and painful bladders, and its relationship with clinical symptoms; they suggest that TRPM8 may play a role in the symptomatology and pathophysiology of these disorders, and may provide an additional target for future overactive and painful bladder pharmacotherapy
 
 
  • Keratin expression profiling of transitional epithelium in the painful bladder syndrome/interstitial cystitis.Laguna P, Smedts F, Nordling J, Horn T, Bouchelouche K, Hopman A, de la Rosette J. Am J Clin Pathol 2006;125:105-10
    • bladder urothelium in PBS/IC showed distinct differences in the profiles of keratins 7, 8, 14, 17, 18, and 20 compared with literature reports for normal bladder urothelium; whether these changes are primary or secondary to another underlying condition remains to be determined according to the authors
    note:
    • PBS/IC patients fulfilled the NIDDK criteria
    • keratins, of which 20 types are known, are the most important parts of the skeleton of the cell
 
   
   
 
  • Interstitial cystitis and infectious agents.
    Fioriti D, Penta M, Mischitelli M, et al. Int J Immunopathol Pharmacol 2005,18:799-804
    • in this case report a 42-year old women with IC is described in whom bladder biopsies revealed a viral co-infection; the authors suggest that this finding could support the hypothesis of a multi-factorial origin of IC. pathology
 
     
reviews
  • Interstitial cystitis.
    Kelada E, Jones A. Arch Gynecol Obstet. 2006 Sep 22; [Epub ahead of print]
    • a review
 
 
  • Efficacy of interstitial cystitis treatments: a review.
    Karsenty G, AlTaweel W, Hajebrahimi S, Corcos J. EAU-EBU Update Series 2006;4:47-61
    • in this article, the degree of evidence regarding the clinical efficacy of available interstitial cystitis treatment options is reviewed
    • only three therapies are supported by a high level of evidence: oral cimetidine and amitriptyline and the intravesical dimethylsulfoxide (DMSO)
 
     
various  
   
   
   
   
   
 
  • Lower urinary tract symptoms in female patients with rheumatoid arthritis.
    Lee KL, Chen MY, Yeh JH, et al. Scand J Rheumatol 2006;35:96-101
    • patients with RA were found to have similar urinary complaints when compared to controls; however, those with secondary SS had a greater severity of lower urinary tract symptoms, a finding similar to that observed in patients with primary SS
 
   
 
  • Antidepressants and cognitive-behavioral therapy for symptom syndromes.
    Jackson JL, O'malley PG, Kroenke K. CNS Spectr 2006;11:212-22
    • this article reviews the randomized controlled trial data for the use of antidepressant and cognitive-behavior therapy for 11 somatic syndromes: irritable bowel syndrome, chronic back pain, headache, fibromyalgia, chronic fatigue syndrome, tinnitus, menopausal symptoms, chronic facial pain, noncardiac chest pain, interstitial cystitis, and chronic pelvic pain
 
   
   
 
  • A simple method for teaching about voiding disorders. 
    Steers WD, Gray M. BJU Int 2006;97:237-42
    • the authors describe the binomial-type system that they developed to provide a simple conceptualization of pathophysiology and treatment strategies for disorders of the lower urinary tract
 
   
   
     
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