Related Experiment Video
Updated: Aug 6, 2026
06:31
Microscopic Observation of Lymphocyte Dynamics in Rat Peyer's Patches
Published on: June 25, 2020
Rat, ovine and bovine Peyer's patches mounted in horizontal diffusion chambers display sampling function
Jyoti Soni1, Alan W Baird, Leah M O'Brien
1School of Agriculture, Food Science and Veterinary Medicine and Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland.
Summary
Peyer
Area of Science:
- Immunology
- Gastroenterology
- Cell Biology
Background:
- Peyer's patches (PP) are key inductive sites of the gut immune system.
- Understanding particle transport across intestinal tissues is crucial for drug delivery and pathogen research.
Purpose of the Study:
- To compare the functional and histological characteristics of Peyer's patches (PP) and non-Peyer's patch (NPP) tissues from different species.
- To evaluate the utility of horizontal diffusion chambers as an in vitro model for studying particle transport in the gut.
Main Methods:
- Excised rat, ovine, and bovine ileal PP and NPP tissues were mounted in horizontal diffusion chambers.
- Horse-radish peroxidase (HRP) flux, bacterial adherence/invasion (S. Typhimurium), and particle uptake were measured.
- Electrophysiological parameters were assessed using Ussing chambers.
Main Results:
- Significantly higher HRP flux, S. Typhimurium adherence/invasion, and particle uptake were observed in PP compared to NPP tissues across species.
- Particle uptake was rapid, energy-, time-, and size-dependent, with distinct localization patterns in PP and NPP.
- Comparative functional and histological characteristics were demonstrated.
Conclusions:
- Horizontal diffusion chambers effectively maintain tissue viability and function for in vitro studies.
- These chambers are a valuable model for examining particle transport and other functions of Peyer's patches.
