Hypothesis / aims of study Bladder outlet obstruction (BOO) causes various structural and functional changes in the voiding system and causes problematic storage symptoms such as urgency, frequency, and urgency incontinence due to detrusor overactivity (DO). These pathophysiological conditions have been simulated using animal models and various neurogenic and myogenic changes have been reported...

PURPOSE Bladder outlet obstruction (BOO) causes storage and voiding dysfunction in the lower urinary tract. We investigated the expression of transient receptor potential cation channel subfamily M member 8 (TRPM8) to evaluate the relationship between TRPM8 expression and overactive bladder (OAB) in a rat model of BOO. METHODS Fifty female Sprague-Dawley rats were divided into 4 groups; norma...

The goal of this study was to evaluate the clinical and urodynamic features in Korean men with lower urinary tract symptoms (LUTS) and to determine non-invasive parameters for predicting bladder outlet obstruction (BOO). Four hundred twenty nine Korean men with LUTS over 50 yr of age underwent clinical evaluations for LUTS including urodynamic study. The patients were divided into two groups ac...

Objective Despite high-grade intravesical prostatic protrusion (IPP) being closely related to bladder outlet obstruction (BOO), up to 21% of patients with low IPP remain obstructed. This study evaluates the characteristics and urodynamic findings of men with small prostates and low IPP. Methods One hundred and fourteen men aged >50 years old with lower urinary tract symptoms (LUTS) were asses...

We investigated the effects of partial bladder outlet obstruction (BOO) on the function and gene expression of 5-hydroxytryptamine (5-HT) receptor subtypes in rat bladder. Isometric contractions of the isolated bladders from sham-operated control and BOO rats were examined. The contractile responses to 5-HT were significantly increased in BOO rat bladder strips, while the responses to KCl, carb...

OBJECTIVES To compare the surgical outcomes of men with bladder outlet obstruction (BOO) due to benign prostatic obstruction (BPO) to those with detrusor underactivity (DU) or acontractile detrusor (DA). MATERIALS AND METHODS This retrospective, IRB approved study included men who underwent BPO surgery for refractory LUTS or urinary retention. Patients were grouped based on videourodynamic (V...

PURPOSE To identify non-invasive clinical parameters to predict urodynamic bladder outlet obstruction (BOO) in patients with benign prostatic hyperplasia (BPH) using causal Bayesian networks (CBN). SUBJECTS AND METHODS From October 2004 to August 2013, 1,381 eligible BPH patients with complete data were selected for analysis. The following clinical variables were considered: age, total prosta...

Objective: Bladder outlet obstruction (BOO), most commonly created by benign prostatic hyperplasia, promotes an inflammatory state that produces voiding dysfunction. Recently, we have shown that the NLRP3 inflammasome triggers this inflammation. Over time, inflammation promotes fibrosis. In this study we explore the role of NLRP3 (and IL-1β produced by activated NLRP3) in BOO-induced fibrosis. ...

BACKGROUND We designed this experiment to elucidate the relationship between the expression of brain derived-neurotrophic factor (BDNF), the expression of granulocyte-colony stimulating factor (G-CSF), and the development of overactive bladder (OAB). In our previous study, the urothelium was observed to be more than a simple mechanosensory receptor and was found to be a potential therapeutic ta...

Since Baschek & Slettebak (1988) drew attention to the similarity between the abundance pattern of λ Boo stars and that of Vega, there has been a long debate whether Vega should be listed among the chemically peculiar stars of λ Boo type. We performed an elemental abundance analysis using a high dispersion spectrum in the optical region, and confirmed its mild metal underabundance. In our discu...