Active clinical trials for "Urethral Stricture"

The purpose of this study is to assess the efficacy of clostridium histolyticum collagenase (XIAFLEX®) in treating urethral strictures.

In 2001 Zuk showed that lipoaspirate contains multipotent adipose stem cells (ADSCs) like in the bone marrow, thereby expanding opportunities in multiple fields. ADSCs have emerged as a key element of regenerative medicine surgery due to their ability to differentiate into a variety of different cell lineages. Moreover, their capacity of paracrine secretion of a broad selection of cytokines, chemokines, and growth factors makes them highly clinically attractive. More specific, of particular interest are the anti-apoptotic, anti-inflammatory, proangiogenic, immunomodulatory, and anti-scarring effects that have been demonstrated for ADSCs, which effects on wound healing, soft-tissue restoration, and scar remodeling. Nanofat firstly introduced by Tonnard in 2013, is an ultra-purified adipose tissue-derived product that is devoid of mature adipocytes but rich in ADSCs and with regenerative properties. Nanofat represents a particular formulation of adipose grafting because it is liquid and it is easily transferable to tissues by injection. The nanofat because is free of whole adipocytes does not have the side effects of others adipose-derived formulations containing whole adipocytes (microfat, lipofilling, macrofat), such as the formation of deposits, granulomas, oily cysts, keloids. Investigators aim to evaluate the use of nanofat grafting in the treatment in urethral strictures of the female and male urethras.

This study aims to compare the penile skin graft and buccal mucosal graft for substitution of long anterior urethral strictures using one-sided dorsal perineal approach.

Regenerative surgery is an emerging multidisciplinary field actually based on derived adipose tissue. Autologous fat grafting was first described by Neuber in 1893 and since then it has developed over the next century. The initial goal of fat grafting was to treat volume losses created by disease or trauma. Further studies done by Zuk et al. in 2001 showed that lipoaspirate contains multipotent adipose stem cells (ADSCs) like in the bone marrow, thereby expanding opportunities in multiple fields. ADSCs have emerged as a key element of regenerative medicine surgery due to their ability to differentiate into a variety of different cell lineages. Moreover, their capacity of paracrine secretion of a broad selection of cytokines, chemokines, and growth factors make them highly clinically attractive. More specific, of particular interest are the anti-apoptotic, anti-inflammatory, proangiogenic, immunomodulatory, and anti-scarring effects that have been demonstrated for ADSCs, which effects on wound healing, soft-tissue restoration and scar remodelling. Nanofat firstly introduced by Tonnard in 2013, is an ultra-purified adipose tissue-derived product that is devoid of mature adipocytes but rich in ADSCs and with regenerative properties.

Single-arm, prospective study assessing semen quality after treatment with the Optilume Urethral DCB in men between 22 and 65 years of age.

To evaluate the safety and efficacy of urethral drug balloon catheter in the treatment of urethral stricture.

The principal aim of this pilot study is to directly compare both approaches and analyze the failure rate after one year of follow-up. These data will serve as the basis to design a larger phase II or III trial in the future with failure rate as the primary end-point. Other study objectives are thoroughly described underneath.

Stricture urethra is a common disease and has various causing factors. The most common performed procedure is direct visual internal urethrotomy (DVIU), but unfortunately has a high recurrence rates. Multiple trial were performed to improve the outcomes of DVIU. Various intralesional injections were used. in this trial we will evaluate intralesional paclitaxel injection following DVIU.

For bulbar urethral strictures, it remains unclear whether ventral onlay graft urethroplasty is non-inferior to dorsal onlay graft urethroplasty in terms of patency rates.

The investigators want to verify whether the surgical outcome of vessel-sparing anastomotic repair in isolated short bulbar urethral strictures is not inferior to the surgical outcome of transecting anastomotic repair. Furthermore, the investigators compare the functional outcome of both techniques verifying if there is less erectile dysfunction after vessel-sparing anastomotic repair than after transecting anastomotic repair.