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Novel isolated cecal pouch model for endoscopic observation in rats
Kurodo Koshino1, Nobuo Kanai1, Masayuki Yamato1
1Kurodo Koshino, Nobuo Kanai, Masakazu Yamamoto, Institute of Gastroenterology, School of Surgery, Tokyo Women's Medical University, Shinjuku-ku, Tokyo 162-8666, Japan.
World Journal of Gastroenterology
|May 9, 2015
Summary
A new rat model was developed for intestinal disease research, enabling drug delivery and endoscopic examination. The side-to-side anastomosis technique improved survival rates and reduced complications compared to end-to-end anastomosis.
Area of Science:
- Gastroenterology
- Surgical Innovation
- Animal Models
Background:
- Developing effective animal models is crucial for advancing intestinal disease research.
- Current models may have limitations in drug delivery, cell transplantation, and endoscopic visualization.
- Novel surgical techniques are needed to improve the utility of rat models for gastrointestinal studies.
Purpose of the Study:
- To establish a novel rat model for studying intestinal diseases.
- To enable drug administration, cell transplantation, and endoscopic examination within this model.
- To compare surgical techniques for creating intestinal anastomoses in rats.
Main Methods:
- A cecal pouch was surgically created in F344/NJc l-rnu/rnu rats.
- Two anastomosis techniques, side-to-side (SSA) and end-to-end (EEA), were compared.
- Small animal endoscopy was utilized for internal pouch visualization.
Main Results:
- The SSA technique demonstrated a significantly higher survival rate and lower complication incidence than the EEA technique.
- The EEA technique was associated with higher rates of stenosis and leakage, leading to mortality.
- The created model allowed for clear endoscopic visualization of the cecal pouch mucosa, free from fecal contamination.
Conclusions:
- The developed rat model offers a valuable platform for novel intestinal disease treatments.
- The SSA technique is superior to the EEA technique for creating intestinal anastomoses in this model.
- This model facilitates drug administration, cell transplantation, and endoscopic evaluations for gastrointestinal research.
