Rat Bladders Augmented with a Novel Bovine Pericardium-Derived Biomaterial Reconstruct Functional Tissue Structures

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Urology

Background:

• Bladder reconstruction often requires augmentation to restore function.
• Acellular biomaterials offer potential for tissue regeneration.

Purpose of the Study:

• To evaluate the efficacy of an acellular bovine pericardium biomaterial (CardioDISC) for rat bladder augmentation.
• To assess its impact on bladder volume and compliance.

Main Methods:

• Partial cystectomy was performed on Sprague-Dawley rats.
• Bladders were augmented with CardioDISC or small intestinal submucosa (SIS), or left non-augmented.
• Bladder volume, compliance, and tissue histology were analyzed at multiple time points.

Main Results:

• CardioDISC augmentation supported tissue regeneration, with smooth muscle actin and uroplakin III positive cells observed at 8 weeks.
• CD-augmented bladders showed increased volume and significantly higher compliance at 8 weeks compared to earlier time points.
• SIS-augmented bladders showed similar tissue regeneration but lacked functional improvements in volume and compliance.

Conclusions:

• Acellular bovine pericardium-derived material (CardioDISC) is a suitable biomaterial for bladder augmentation.
• It promotes functional recovery of bladder volume and compliance.
• This biomaterial holds potential for clinical application in bladder reconstruction.