Mitochondrial metabolism in the rat during bladder regeneration induced by small intestinal submucosa.

Objective: To assess mitochondrial metabolism of bladder tissue induced by small-intestinal submucosa (SIS), by comparing the mitochondrial enzyme metabolism in this tissue with that in normal bladder tissue and thus evaluate intracellular normality.

Material And Methods: In all, 70 rats were grouped into healthy controls (10), surgical controls with a simple bladder incision (15) and rats treated by partial cystectomy with replacement by the SIS graft (45). At 1, 3 and 6 months the rats were killed, the enzymes of mitochondrial respiratory chain complexes assayed, and the respiration of permeabilized bladder fibres assessed using polarographic analysis.

Surgical treatment of bladder diverticula: laparoscopic approach.

Background And Purpose: Bladder diverticulectomy is classically performed by open surgery (extravesical, intravesical, or combined) or, less frequently, by an endoscopic approach for small diverticula. We used a celioscopic approach to diverticulectomy in order to assess its feasibility and the operative and postoperative complications.

Patients And Methods: Five patients aged 55 to 76 years (mean 64.

Laparoscopic surgery for pheochromocytoma.

Objective: To evaluate the feasibility of laparoscopic adrenalectomy for pheochromocytoma.

Material: Between January 1998 and March 2002, 12 patients aged from 19 to 76 (average age 54 years) underwent 13 adrenalectomies (7 right and 6 left, 1 bilateral) using laparoscopic surgery. A specific anti-hypertensive preparation was begun prior to the operation.

[Use of acellular biological matrices in urology].

Tissue engineering methods have been increasingly developed due to the growing difficulties and limits imposed by conventional tissue reconstruction surgery using autologous tissues. Apart from so-called in vitro cell culture methods, which could have future applications in urology, in vivo methods using biomaterials designed to allow colonizations by host cells offer real possibilities for urogenital tract reconstruction. The use of acellular biological matrix has considerably reduced the risks related to immunological rejection and infectious complications.