Victor K. Lin

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INTRODUCTION The hyper-proliferative activity of stromal smooth muscle (SM) cells is believed to be responsible for the pathogenesis of benign prostatic hyperplasia (BPH). We have observed that those stromal cells can differentiate into unrelated specialized cells. We thus hypothesize that stromal cells derived from adults prostate specimens may contain(More)
OBJECTIVES To compare elastin expression and elastic fibre width in the anterior vaginal wall of postmenopausal women with and with no bladder prolapse. PATIENTS AND METHODS Full-thickness specimens were obtained from the upper lateral anterior vaginal wall of women having a large cystocele repaired (stage III or IV; prolapse group, 33) and the same(More)
INTRODUCTION Following prolonged partial bladder outlet obstruction (BOO) in the mouse, cholinergic mediated detrusor contractility decreases. Previous work has demonstrated an increase in the inducible form of nitric oxide synthase (iNOS) at the mRNA and protein levels soon after obstruction. Since nitric oxide (NO), the product of the action of iNOS on(More)
BACKGROUND Benign prostatic hyperplasia (BPH) is common among aging men. Over 80% of males 50-60 years and older have various degrees of bladder outlet obstruction secondary to BPH. Despite the tremendous medical impact of BPH, its molecular pathophysiology remains unclear. Current BPH research focuses on steroid hormonal effects, stromal-epithelial cell(More)
AIMS Smooth muscle myosin heavy chain (SMMHC) isoform composition has been shown to be developmentally regulated and to be associated with functional changes in smooth muscle activity. In this study, we sought to determine expression patterns of SMMHC isoforms in a murine model of spinal cord injury (SCI) and to compare these expression patterns to(More)
Bladder-outlet obstruction leads to detrusor smooth-muscle hypertrophy/hyperplasia. Despite this overall increase in muscle mass, smooth-muscle contractility decreases and bladder emptying is impaired. The goal of this study was to determine whether smooth-muscle myosin heavy-chain (MHC) alterations occur in conjunction with partial obstruction of the(More)
PURPOSE Previous studies have demonstrated that the non-compliant bladder is characterized histologically by an increased deposition of extracellular matrix protein, especially type III collagen, in the muscle wall. We sought to determine if an increased tissue level of type III collagen messenger RNA (mRNA) parallels the observed increase in protein(More)
OBJECTIVE To compare the mRNA expression of extracellular matrix (ECM) proteins in postmenopausal prolapsed versus non-prolapsed anterior vaginal wall (AVW) tissue. We hypothesized that the weakening of the tissue leading to prolapse was due to decreased collagen production from a downregulation at the transcriptional level. METHODS Following IRB(More)
In the last several years, significant advances have been made in the understanding of bladder smooth muscle physiology. This article provides a summary for the clinician of current knowledge about the detrusor smooth muscle cell structure, function, and the relationship of structure to function in terms of bladder storage and physical properties such as(More)
PURPOSE To develop a mouse model for partial infravesical obstruction, and determine the resultant changes in bladder function, with particular emphasis on the role of inducible nitric oxide synthase (iNOS) in the bladder response. MATERIALS AND METHODS Wild type mice were subjected to no intervention, sham operation, and varying durations of partial(More)