Functional and Oncological Outcomes of Female Pelvic Organ-preserving Robot-assisted Radical Cystectomy.

BACKGROUND: For females undergoing cystectomy and urinary diversion, decreases in sexual and urinary functions can have a significant impact on quality of life. Pelvic organ-preserving (POP) radical cystectomy (RC) has been proposed as an approach to improve postoperative functional outcomes. OBJECTIVE: To evaluate postoperative functional outcomes of a robotic approach for female POP RC with intracorporeal urinary diversion. DESIGN SETTING AND PARTICIPANTS: This was a multicenter retrospective study evaluating sexual, urinary, and oncological outcomes for sexually active females undergoing POP robot-assisted RC for ≤T2 bladder cancer. Exclusion criteria included multifocal, trigonal, or locally advanced tumors. SURGICAL PROCEDURE: We describe a step-by-step technique for POP robot-assisted RC with intracorporeal urinary diversion. MEASUREMENTS: The primary outcome of the study was evaluation of sexual and urinary functions following surgery. Oncological outcomes were evaluated as a secondary endpoint. RESULTS AND LIMITATIONS: Our study included 23 females who underwent POP robot-assisted RC between 2008 and 2020 with intracorporeal neobladder (87%) or ileal conduit (13%) reconstruction. The median follow-up was 20 mo. A postoperative sexual function questionnaire was completed by 15 patients (65%). Of those, 13 (87%) resumed sexual activity at a median of 6 mo after surgery. Of the patients with a neobladder, 14 (70%) achieved daytime continence and 16 (80%) achieved nighttime continence. Cancer-specific and overall survival were both 91%. The results are limited by their retrospective nature. CONCLUSIONS: POP robot-assisted RC with orthotopic neobladder allows a majority of female patients to return to sexual activity after surgery. This approach should be considered for selected sexually active women. PATIENT SUMMARY: We evaluated 23 women with bladder cancer who underwent surgical removal of the bladder with preservation of their reproductive organs. Following this surgery, a majority of patients resumed sexual activity. For selected patients, this technique can be performed without compromising cancer control.

BCG-induced cytokine release in bladder cancer cells is regulated by Ca2+ signaling.

Bacillus Calmette-Guérin (BCG) is widely used in the clinic to effectively treat superficial urinary bladder cancer. However, a significant proportion of patients who fail to respond to BCG risk cystectomy or death. Though more than 3 million cancer treatments with BCG occur annually, surprisingly little is known about the initial signaling cascades activated by BCG. Here, we report that BCG induces a rapid intracellular Ca2+ (calcium ion) signal in bladder cancer cells that is essential for activating the transcription factor nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and for synthesizing and secreting proinflammatory cytokines, including interleukin 8 (IL-8). A similar Ca2+ response was observed when cells were exposed to the supernatant of BCG. Studying cellular molecular mechanisms involved in the BCG signaling event, we found pivotal roles for phospholipase C and the Toll-like receptor 4. Further assessment revealed that this signaling pathway induces synthesis of IL-8, whereas exocytosis appeared to be controlled by global Ca2+ signaling. These results shed new light on the molecular mechanisms underlying BCG treatment of bladder cancer, which can help in improving therapeutic efficacy and reducing adverse side effects.