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Tissue Engineering and Regenerative Medicine in Pediatric Urology: Urethral and Urinary Bladder Reconstruction
Martina Casarin1, Alessandro Morlacco1, Fabrizio Dal Moro1
1Department of Surgery, Oncology and Gastroenterology, Giustiniani 2, 35128 Padua, Italy.
Insights
Tissue engineering offers promising solutions for pediatric urology conditions like hypospadias and neurogenic bladder. This review explores biomaterials and strategies for urethral and bladder reconstruction, focusing on tissue regeneration for better patient outcomes.
Area of Science:
- Regenerative Medicine
- Pediatric Urology
- Biomaterials Science
Background:
- Congenital pediatric urologic conditions like hypospadias and neurogenic bladder require surgical correction.
- Current gold-standard surgeries (urethroplasty, enterocystoplasty) have significant complication rates.
- Limited autologous tissue availability poses a challenge for reconstructive procedures.
Purpose of the Study:
- To review tissue engineering strategies for urethral and urinary bladder reconstruction in pediatric patients.
- To evaluate biomaterials and regenerative approaches for congenital urologic defects.
- To highlight critical features for successful pediatric urinary tissue engineering.
Main Methods:
- Comprehensive literature review of studies on urethral and bladder reconstruction using tissue engineering.
- Analysis of biomaterials tested in animal models and human patients.
- Evaluation of tissue regeneration capabilities based on cell seeding and growth factor incorporation in scaffolds.
Main Results:
- Various biomaterials have been tested for urethral and bladder reconstruction in pediatric models.
- Scaffold properties, cell types, and growth factors influence tissue regeneration potential.
- Successful integration and functional recovery are key indicators of efficacy.
Conclusions:
- Tissue engineering holds significant potential to overcome limitations of current surgical treatments for pediatric urologic conditions.
- Optimizing scaffold design, cell sourcing, and growth factor delivery is crucial for advancing regenerative strategies.
- Further research focusing on pediatric-specific needs is essential for clinical translation.
Abstract:
In the case of pediatric urology there are several congenital conditions, such as hypospadias and neurogenic bladder, which affect, respectively, the urethra and the urinary bladder. In fact, the gold standard consists of a urethroplasty procedure in the case of urethral malformations and enterocystoplasty in the case of urinary bladder disorders. However, both surgical procedures are associated with severe complications, such as fistulas, urethral strictures, and dehiscence of the repair or recurrence of chordee in the case of urethroplasty, and metabolic disturbances, stone formation, urine leakage, and chronic infections in the case of enterocystoplasty. With the aim of overcoming the issue related to the lack of sufficient and appropriate autologous tissue, increasing attention has been focused on tissue engineering. In this review, both the urethral and the urinary bladder reconstruction strategies were summarized, focusing on pediatric applications and evaluating all the biomaterials tested in both animal models and patients. Particular attention was paid to the capability for tissue regeneration in dependence on the eventual presence of seeded cell and growth factor combinations in several types of scaffolds. Moreover, the main critical features needed for urinary tissue engineering have been highlighted and specifically focused on for pediatric application.
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