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Updated: Jul 14, 2026

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One-anastomosis Gastric Bypass (OAGB) in Rats
Published on: November 10, 2018
Seromuscular gastrocystoplasty in rats
S Demirbilek1, H F Atayurt, U Han
1Clinic of Pediatric Surgery, Social Security Council Ankara Children's Hospital, Turkey.
Journal of Pediatric Surgery
|April 1, 1997
Summary
Seromuscular gastrocystoplasty in rats improved bladder capacity without causing aciduria or significant pathological changes. Standard gastrocystoplasty led to aciduria and concerning bladder tissue alterations, including papillomas.
Area of Science:
- Urology
- Surgical Innovation
- Gastrointestinal Surgery
Background:
- Long-term outcomes of seromuscular gastrocystoplasty remain largely undocumented.
- Gastrocystoplasty techniques are explored for bladder augmentation, but potential complications require thorough investigation.
Purpose of the Study:
- To evaluate the biochemical, physiological, and histopathological outcomes of seromuscular gastrocystoplasty in a rat model.
- To compare the safety and efficacy of seromuscular gastrocystoplasty against standard gastrocystoplasty and control groups.
Main Methods:
- Fifty rats were divided into control/sham, gastrocystoplasty, and seromuscular gastrocystoplasty groups.
- Evaluated parameters included urine and blood pH, bicarbonate levels, bladder capacity, and end-filling pressures.
- Histopathological analysis of bladder tissues was performed post-procedure.
Main Results:
- Both gastrocystoplasty and seromuscular gastrocystoplasty significantly increased bladder capacity.
- Aciduria occurred in 22% of the gastrocystoplasty group; none observed in the seromuscular or control groups.
- Histopathology revealed significant bladder changes, including papillomas and metaplasia, in the gastrocystoplasty group, which were minimal in the seromuscular group.
Conclusions:
- Seromuscular gastrocystoplasty demonstrates a favorable safety profile compared to standard gastrocystoplasty, with reduced risk of aciduria and significant pathological changes.
- The technique offers a promising alternative for bladder augmentation, warranting further investigation into its long-term efficacy and applicability.

