Publications by authors named "Christopher Doiron"

Background: Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) has posed a significant burden on affected individuals and healthcare systems. While pharmacological treatments are commonly used, non-pharmacological management strategies have gained attention for their potential benefits in improving CP/CPPS symptoms. However, the comparative efficacy of these non-pharmacological interventions remains unclear.

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Introduction: A subset of interstitial cystitis/bladder pain syndrome (IC/BPS) patients experience recurrent urinary tract infection (rUTI) associated with symptom flares. Recurrent UTI subjects with associated IC/BPS were enrolled in the first North American early clinical experience trial evaluating a new sublingual UTI preventative vaccine, MV140. It has been shown that women with rUTI develop an imbalance in the T helper 1 and 2 (Th2 over-expression) in the bladder mucosa.

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Article Synopsis
  • Interstitial cystitis/bladder pain syndrome (IC/BPS) causes ongoing pain and frequent bathroom trips, hurting people's daily lives and sleep quality.
  • Poor sleep can make this pain worse, and things like feeling sad or overly worried about pain might play a role in the problem.
  • A study with 74 people confirmed that worse sleep can lead to more pain, mainly because of feelings of sadness and worry about pain, suggesting that these emotions are important to consider for treatment.
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Introduction: This is the first North American clinical evidence for MV140, a novel bacterial sublingual vaccine, developed for prevention of recurrent urinary tract infection (UTI) in women.

Methods: Female subjects with ≥3 documented UTIs/year underwent three-month vaccination treatment, nine-month efficacy period, and optional three-month followup (total 15 months). Primary outcome was no clinically diagnosed UTI following vaccination (UTI-free rate).

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Uncomplicated recurrent urinary tract infections (rUTIs) in women are associated with episodic bothersome symptoms and have a significant impact on the mental and physical quality of life. Treatment with antibiotics (short- and long-term dosing) results in acute and chronic side effects and costs and promotes general antibiotic resistance. Improved nonantibiotic management of rUTI in women represents a true, unmet medical need.

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Introduction: An estimated 18% of Canadians have overactive bladder (OAB), with approximately 24% of those reporting difficulty adhering to pharmacotherapy. To date, there has been no investigation into barriers facing sacral neuromodulation (SNM) as treatment for OAB in Canada.

Methods: Current Canadian Urological Association members were invited to participate in an anonymous survey.

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Background: Pharmacological treatments for chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) are empirically used. However, the quantitative comparative effectiveness and safety of multiple pharmacological treatments is lacking.

Methods: PubMed, Embase, Cochrane Central Register of Controlled Trials, and Web of Science were searched from inception to March 22, 2022.

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Introduction: The management of urethral stricture has evolved over the last several decades. We sought to analyze urethral stricture and urethroplasty trends at a tertiary referral center over a 15-year period.

Methods: Patients undergoing urethroplasty by a single surgeon from August 2003 to July 2018 were analyzed.

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Introduction: The present study sought to examine a new model to evaluate the mechanistic pathways between pain and sexual dysfunction in men with chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS), incorporating cognitive and emotional factors.

Methods: Men with a self-reported diagnosis of CP/CPPS (n=94, 24-69 years, M=44.22, standard deviation 11.

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Objective: To examine the incidence and factors associated with the development of new comorbidities in men undergoing anti-incontinence surgery after prostate cancer (PCa) surgery. Post-prostatectomy incontinence (PPI) may deter men from engaging in physical activities and increase the risk of developing comorbidities after prostatectomy.

Methods: Patients undergoing surgery for PPI from 2006 to 2019 were identified.

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Objective: To better delineate perioperative urethroplasty practice patterns among reconstructive urologists given that management strategies in reconstructive urology have generally been poorly described.

Methods: An online survey examining perioperative management of anterior urethroplasty patients was administered to Society of Genitourinary Reconstructive Surgeons (GURS) members between August-October 2019. Questions pertained to tissue transfer, pharmacologic prophylaxis, catheter use, follow-up, and post-operative care.

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Objective: To undertake the first comprehensive evaluation of the urinary microbiota associated with Hunner lesion (HL) interstitial cystitis/bladder pain syndrome (IC/BPS). Despite no previous identification of a distinct IC/BPS microbial urotype, HL IC/BPS, an inflammatory subtype of IC/BPS, was hypothesized most likely to be associated with a specific bacterial species or microbial pattern.

Participants And Methods: The bacterial microbiota of midstream urine specimens from HL IC/BPS and age- and gender-matched IC/BPS patients without HL (non-HL IC/BPS) were examined using the pan-bacterial domain clinical-level molecular diagnostic Pacific Biosciences full-length 16S gene sequencing protocol, informatics pipeline and database.

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Background: Chronic pelvic pain with various etiologies and mechanisms affects men and women and is a major challenge. Monotherapy is often unsuccessful for chronic pelvic pain, and combinations of different classes of medications are frequently prescribed, with the expectation of improved outcomes. Although a number of combination trials for chronic pelvic pain have been reported, we are not aware of any systematic reviews of the available evidence on combination drug therapy for chronic pelvic pain.

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Purpose: Whether patients who progress to muscle-invasive bladder cancer have worse outcomes compared to those that present de novo is important for clinical decision making. The objective of this study was to determine if there is a difference in survival after radical cystectomy for de novo cases compared to progressors.

Materials And Methods: This retrospective, population-based study reports on all patients who underwent radical cystectomy in Ontario utilizing records linked to the Ontario Cancer Registry.

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Introduction: Evidence-based psychological strategies are being used as clinicians look for helpful interventions for patients diagnosed with the enigmatic chronic urological pelvic pain condition of interstitial cystitis/bladder pain syndrome (IC/BPS). Pain and pain catastrophizing are associated with chronic pelvic pain outcomes but the longitudinal role of catastrophizing on patient pain in IC/BPS remains unknown.

Methods: Women with IC/BPS were recruited from tertiary care clinics across North America and completed a battery of questionnaires, including demographics, pain, depression, catastrophizing at baseline, six months, and one year.

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Introduction: We conducted a systematic review to examine the role of a novel sublingual vaccine - Uromune - for prevention of recurrent urinary tract infection (rUTI) to understand its potential role for Canadian women suffering from rUTI.

Methods: Databases were searched for studies published from 2010-2020 that investigated use of Uromune in the management of rUTI. Only original clinical studies that included use of Uromune as prophylaxis for uncomplicated rUTI in women that included UTI-free rate following initiation of vaccine as an outcome were included.

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Objective: To assess postoperative outcomes from the Adjustable TransObturator Male System (ATOMS) and identify factors influencing failure to achieve continence.

Patients And Methods: A multicentered analysis was performed on all patients treated for postprostatectomy incontinence using the third-generation ATOMS at 9 Canadian tertiary referral centers. The primary outcome was continence (defined as requiring ≤1 pad postoperatively for patients requiring ≥2 pads preoperatively and 0 pads for those requiring 1 pad preoperatively).

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