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Related Experiment Videos

Tissue-engineered autologous bladders for patients needing cystoplasty.

Anthony Atala1, Stuart B Bauer, Shay Soker

  • 1Department of Urology and Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA. aatala@wfubmc.edu

Lancet (London, England)
|April 25, 2006
PubMed
Summary
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Engineered bladder tissue reconstruction offers a promising alternative to traditional gastrointestinal segments for cystoplasty. This novel approach in myelomeningocele patients demonstrated improved bladder function and preserved renal health.

Area of Science:

  • Regenerative Medicine
  • Biomaterials Engineering
  • Urology

Background:

  • Cystoplasty using gastrointestinal segments for end-stage bladder disease can lead to complications.
  • Autologous engineered bladder tissue presents an alternative for urinary tract reconstruction.

Purpose of the Study:

  • To evaluate the safety and efficacy of autologous engineered bladder tissue for cystoplasty in patients with myelomeningocele.
  • To compare different scaffold materials and omental wrapping techniques.

Main Methods:

  • Seven patients (aged 4-19) with myelomeningocele underwent cystoplasty using autologous urothelial and muscle cells seeded on collagen or collagen-polyglycolic acid scaffolds.
  • Engineered bladder constructs were implanted, with or without omental wrap.
  • Post-operative monitoring included urodynamics, imaging, biopsies, and serum analyses.

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Main Results:

  • The composite engineered bladders with omental wrap showed the greatest improvement in bladder capacity and compliance (2.79-fold increase).
  • Significant decrease in bladder leak point pressure (56%) was observed.
  • No metabolic issues, urinary calculi, or renal compromise were noted; biopsies confirmed adequate structural integrity.

Conclusions:

  • Autologous engineered bladder tissue on collagen-polyglycolic acid scaffolds, wrapped in omentum, is a viable option for cystoplasty.
  • This technique offers functional improvement and maintains renal preservation in patients with bladder dysfunction.