Carbon dioxide insufflation causes upper urinary tract injury in the early period of an experimental vesicoureteral reflux model

Laparoscopic Approach for Intravesical Surgery Using Pneumovesicum in Urology: Literature Review

Minimally invasive laparoscopic surgical procedures are increasingly being used in the management of various urological diseases. In particular, the laparoscopic approach for intravesical surgery using pneumovesicum (LPV) is a minimally invasive alternative with potential advantages including decreased morbidity, shorter hospital stays, and improved cosmesis. We review the applications of LPV in urology, summarize data for different surgical approaches, and provide an overview of patient management, as well as other considerations. This narrative review focused primarily on articles indexed in PubMed, Google Scholar, Scopus, and Embase databases. No formal search strategy was used, and no meta-analysis of data was performed.

Transplantation of mature adipocyte-derived dedifferentiated fat cells for the treatment of vesicoureteral reflux in a rat model

PURPOSE

Autologous cells potentially provide an ideal injectable substance for management in vesicoureteral reflux (VUR). The aim of this study is to examine the effects of mature adipocyte-derived dedifferentiated fat (DFAT) cell transplantation on VUR in a rat bladder pressurization-induced VUR model.

METHODS

To create VUR, Sprague-Dawley rats underwent urethral clamping and placement of cystostomy followed by intravesical pressurization. Rat DFAT cells (1 × 10⁶ cells, DFAT group, n = 5) or saline (control group, n = 5) was then injected into the bilateral vesicoureteral junctions. Two weeks later, VUR grade was evaluated on cystography. The number of apoptotic cells in the renal pelvic urothelium, the ureteral inner/outer diameter ratio and the area of connective tissue in the posterior bladder wall were measured.

RESULTS

The reflux grade in the DFAT group was significantly lower than that in the control group. The number of apoptotic cells in the renal pelvic urothelium, ureteral inner/outer diameter ratio and connective tissue area in DFAT group were significantly lower in comparison with the control group.

CONCLUSIONS

DFAT cell transplantation improved VUR and exerted nephroprotective effects in a rat VUR model.