Publications by authors named "John D McConnell"

Introduction: Women, underrepresented minorities, and international medical graduates are underrepresented in urology. We sought to compare demographics of leaders in academic urology to urology faculty and academic medical faculty.

Materials And Methods: The Association of American Medical Colleges provided academic medical faculty demographics.

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Background: Several germline single nucleotide polymorphisms (SNPs) have been consistently associated with prostate cancer (PCa) risk.

Objective: To determine whether there is an improvement in PCa risk prediction by adding these SNPs to existing predictors of PCa.

Design, Setting, And Participants: Subjects included men in the placebo arm of the randomized Reduction by Dutasteride of Prostate Cancer Events (REDUCE) trial in whom germline DNA was available.

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Purpose: The Reduction by Dutasteride of Prostate Cancer Events (REDUCE) prostate cancer risk reduction study randomly assigned 8,231 men to dutasteride or placebo for 4 years. Protocol-mandated biopsies were obtained after 2 and 4 years. After the discovery of three cases of biopsy sample misidentification in the first 2 years, all protocol-mandated biopsy samples were DNA tested to verify biopsy identity.

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Purpose: In the present analysis we examined data from the MTOPS (Medical Therapy of Prostatic Symptoms) trial to determine the effect of long-term finasteride treatment, either alone or in combination with doxazosin, on total prostate volume across the full range of baseline total prostate volume values in men enrolled in this study.

Materials And Methods: In this trial a total of 3,047 patients with lower urinary tract symptoms were randomized to placebo, doxazosin (4 to 8 mg), finasteride (5 mg) or the combination of doxazosin and finasteride (average length of treatment 4.5 years).

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Objectives: To evaluate the feasibility of radical retropubic prostatectomy (RRP) as an option for treating men older than 70 years with organ confined prostate cancer and to compare biochemical progression-free survival with younger cohorts.

Materials And Methods: A total of 689 consecutive patients who were treated with RRP from 1994 to 2002 for clinically localized prostate cancer were categorized into 3 different age groups: younger than 50 years (n = 49), 50-70 years (n = 601), and older than 70 years (n = 39). Patients older than 70 years were healthy individuals for their age.

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Purpose: To assess whether preoperative plasma levels of urokinase-type plasminogen activator (uPA) and its soluble receptor (uPAR) would predict cancer of the prostate (CaP) presence, stage, and prognosis.

Patients And Methods: Plasma levels of uPA and uPAR were measured in patients who underwent radical prostatectomy for clinically localized CaP (preoperative, n = 429; postoperative, n = 76), 44 healthy men, 19 patients with metastases to regional lymph nodes, and 10 patients with bone metastases.

Results: uPA and uPAR levels were significantly elevated in patients with CaP compared with healthy men and significantly declined after prostate removal.

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Purpose: We analyzed data from the placebo arm of the MTOPS trial to determine clinical predictors of BPH progression.

Materials And Methods: A total of 3,047 patients with LUTS were randomized to either placebo, doxazosin (4 to 8 mg), finasteride (5 mg), or a combination of doxazosin and finasteride. Average length of followup was 4.

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Purpose: We examined data from the Medical Therapy of Prostatic Symptoms trial to determine the relationship between baseline TPV and the effect of medical therapy in men with LUTS secondary to BPH.

Materials And Methods: A total of 3,047 patients with LUTS were randomized to placebo, 4 to 8 mg doxazosin, 5 mg finasteride or the combination of doxazosin and finasteride. Average treatment duration was 4.

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Article Synopsis
  • Benign prostatic hyperplasia (BPH) involves changes in smooth muscle stroma, and this study highlights alpha(2) macroglobulin (alpha(2)-M) as a key protein with potential roles in BPH progression.
  • Researchers used differential display and various techniques to identify and confirm elevated expression levels of alpha(2)-M in BPH tissue compared to normal prostate tissue.
  • The findings suggest that increased alpha(2)-M in the prostate, primarily from stromal cells, could be significant in regulating prostatic growth, both benign and malignant.
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Background: This study was designed to determine whether androgen ablation (AA) affects expression of alpha1A-adrenergic receptors (AR) in the human prostate.

Methods: Concentrations of alpha1A-AR mRNA were determined in benign prostatic tissue from patients undergoing surgery after a 3-month course of combined androgen ablation (CAD) therapy with leuprolide and flutamide, and a matched group of untreated patients with clinical BPH.

Results: Mean concentration of alpha1A-AR in the AA group was 0.

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Objective: To examine whether Gleason score (GS) 3 + 4 and 4 + 3 cancers at radical prostatectomy behave differently and whether this behaviour is independently associated with prostate cancer outcome.

Patients And Methods: From July 1994 to December 2002 309 consecutive men who had a radical retropubic prostatectomy for clinically localized disease had final GS 7 tumours in their prostatectomy specimen. Statistical analyses, including multivariate logistic regression, were used to evaluate the association between variables, i.

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Purpose: We examined if the percent of positive biopsies is associated with features of biologically aggressive prostate cancer, biochemical progression and development of distant metastases in patients undergoing radical prostatectomy (RP).

Materials And Methods: Multivariate analyses of preoperative features in 605 consecutive patients who underwent RP for clinically localized disease were evaluated to determine the association between the percent positive biopsy cores (PosBx), pathological stage and grade, and biochemical progression following RP. The percent of PosBx cores was defined using the formula, (number of positive biopsy cores/total number of biopsy cores) x 100.

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Purpose: We determined the effect of long-term treatment with finasteride on the incidence of acute urinary retention (AUR) and benign prostatic hyperplasia (BPH) related surgery in men with BPH.

Materials And Methods: The Proscar (Merck and Co., Inc.

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Unlabelled: We examined whether invasion of lymphatic and/or vascular vessels (LVI), or perineural spaces (PNI) is associated with prostate cancer features and outcome.

Materials And Methods: A total of 630 consecutive men underwent radical retropubic prostatectomy for clinically localized disease. LVI and PNI examination was part of the routine specimen evaluation.

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Background: Benign prostatic hyperplasia is commonly treated with alpha-adrenergic-receptor antagonists (alpha-blockers) or 5alpha-reductase inhibitors. The long-term effect of these drugs, singly or combined, on the risk of clinical progression is unknown.

Methods: We conducted a long-term, double-blind trial (mean follow-up, 4.

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Objectives: To evaluate the long-term outcomes of penile prosthesis surgery at a teaching institution.

Methods: Patients who had penile prosthesis surgery from 1988 to 1999 at a private teaching hospital and the Dallas Veterans Affairs Medical Center were identified and charts abstracted for age at first prosthesis, ethnicity, etiology of impotence, comorbid medical disease, previous treatments, surgeon, type of prosthesis, perioperative complications, social history, and outcome. Patient outcomes were determined either from recent clinical documentation within the prior year or by telephone survey of patients.

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Virus uptake is the first rate-limiting step for the successful gene delivery of any virus-based gene therapy. For adenovirus-based gene therapy, the expression levels of the adenovirus receptor--coxsackievirus and adenovirus receptor (CAR)--play an important role in dictating gene delivery. We have observed a wide spectrum of CAR expression among cancer cell lines and tumor specimens.

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Alpha-blockers and 5-alpha-reductase inhibitors are medical therapies that are being used as alternatives to surgical interventions to relieve symptoms of benign prostatic hyperplasia (BPH). Taken as monotherapy, alpha-blockers and 5-alpha-reductase inhibitors have each been shown to provide relief from BPH symptoms. Treatment with finasteride over 4 years has been shown to reduce both BPH symptoms and the likelihood of acute urinary retention and the need for surgery.

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Objectives: To summarize the 6-year clinical trial data with finasteride. Benign prostatic hyperplasia is a chronic and progressive disease and therefore assessment of long-term safety and efficacy is important.

Methods: The North American and International Phase III Finasteride trials enrolled symptomatic men with enlarged prostate glands.

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Article Synopsis
  • - The study aimed to investigate the variability in gene expression of 5 alpha-reductase 2 (5aR2) in different areas of the prostate to understand its role in benign prostatic hyperplasia (BPH).
  • - Tissue samples from ten patients under prostatectomy were analyzed for 5aR2 expression and tissue composition, revealing significant differences in gene expression both within the same gland and between different glands.
  • - Results indicated that BPH shows a diverse tissue composition and gene expression patterns, suggesting that relying on single biopsy markers to assess the condition's behavior may be misleading.
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Objectives: To assess the utility of voiding and filling symptom subscores in predicting features of benign prostatic hyperplasia (BPH) progression, including acute urinary retention (AUR) and prostate surgery.

Methods: The Proscar Long-term Efficacy and Safety Study (PLESS) was a 4-year study designed to evaluate the effects of finasteride versus placebo in men with lower urinary tract symptoms (LUTS), clinical evidence of BPH, and no evidence of prostate cancer. A self-administered questionnaire was employed to quantify LUTS at baseline.

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Background: Mismatch repair (MMR) genes are responsible for coordinated correction of misincorporated nucleotides formed during DNA replication. Inactivating mutations in MMR genes have been described in sporadic cancers and a hereditary cancer predisposition syndrome. Mismatch repair deficiency causes instability at microsatellites and increased mutation rates.

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DOC-2/DAB2 is a member of the disable gene family with tumor-inhibitory activity. Its down-regulation is associated with several neoplasms, and serine phosphorylation of its N terminus modulates DOC-2/DAB2's inhibitory effect on AP-1 transcriptional activity. We describe the cloning of DIP1/2, a novel gene that interacts with the N-terminal domain of DOC-2/DAB2.

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